Riordan Manufacturing Essay Example | Topics and Well Written Essays - 500 words

Riordan Manufacturing - Essay Example The first and the foremost requirement is to keep track of the information regarding past sales and this is deemed important as it helps keep track of the income and sales in addition to enabling the company to provide better services to the customer. Another important aspect is that the migration towards the CRM system will reduce the storage costs by huge margins. In addition to storing information concerning past sales, the company is also desirous of having all details concerned with market surveys to be stored in the new information system that is proposed to be developed as it enabled the company to refer past trends with ease and accuracy thereby enabling it to take the appropriate decisions. A major requirement of the new software system is that it must provide an integrated environment wherein all salespersons would be able to maintain their individual information, but the data would always be available so that need of the customer can be better anticipated. The company is also desirous of using the new system that is

Digital Voltmeter Using An 8051 Microcontroller Computer Science Essay

Digital Voltmeter Using An 8051 Microcontroller Computer Science Essay A voltmeter finds its importance wherever voltage is to be measured. A  voltmeter  is an instrument used for measuring the  electrical potential  difference between two points in an electric circuit. Analog voltmeters move a pointer across a scale in proportion to the voltage of the circuit. General purpose analog voltmeters may have an accuracy of a few per cent of full scale, and are used with voltages from a fraction of a volt to several thousand volts. Digital voltmeters give a numerical display of voltage by use of analog to digital converter. Digital meters can be made with high accuracy, typically better than 1%. Specially calibrated test instruments have higher accuracies, with laboratory instruments capable of measuring to accuracies of a few parts per million. Meters using  amplifiers  can measure tiny voltages of micro-volts or less. Digital voltmeters (DVMs) are usually designed around a special type of  analog-to-digital converter  called an  integrating converter. Voltmeter accuracy is affected by many factors, including temperature and supply voltage variations. To ensure that a digital voltmeters reading is within the manufacturers specified tolerances, they should be periodically calibrated. Digital voltmeters necessarily have input amplifiers, and, like vacuum tube voltmeters, generally have a constant input resistance of 10 mega-ohms regardless of set measurement range. This project aims at building a Digital Voltmeter using an 8051 microcontroller. All the data accessed and processed by the microcontroller is the digital data. And thus, the usage of an analog-to-digital converter finds its necessity here. A standard analog-to-digital converter ADC0804 is used in the current project. The input voltage (which is the analog input) is restricted to be in the range of 0-15V. The processed data in the 8051 is used to drive a display output on a LCD display unit. The display is in the form of digits and is accurate to a value of one decimal. The input voltage is desired to be that of a DC voltage for steady observations of the voltage value on the LCD panel. Rather, if an AC input voltage is given at the input terminals, the output varies indefinitely as is the nature of AC voltage. Thus, the instantaneous value of the AC voltage is not steadily shown on the LCD panel. COMPONENTS Following is the entire set of the components used to build the Digital Voltmeter: Microcontroller, AT89S52 Analog-to-Digital Converter, ADC0804 161 LCD Oscillator circuit for the microcontroller 12MHz Crystal Capacitor 33pF Capacitors Voltage divider circuit/ Input terminals 200k, 100k Resistors 100nF Capacitor ADC Clock Circuit 10k Resistor 150pF Capacitor 100k Potentiometer (to adjust the back-light of the LCD) Description of the Components used Microcontroller, AT89S52 Æ’Â   The AT89S51 is a low-power, high-performance CMOS 8-bit microcontroller with 4K bytes of In-System Programmable Flash memory. The device is manufactured using Atmels high-density non-volatile memory technology and is compatible with the industry-standard 80C51 instruction set and pin-out. The on-chip Flash allows the program memory to be reprogrammed in-system or by a conventional non-volatile memory programmer. By combining a versatile 8-bit CPU with In-System Programmable Flash on a monolithic chip, the Atmel AT89S51 is a powerful microcontroller which provides a highly-flexible and cost-effective solution to many embedded control applications. The AT89S51 provides the following standard features: 4K bytes of Flash, 128 bytes of RAM, 32 I/O lines, Watchdog timer, two data pointers, two 16-bit timer/counters, a five-vector two-level interrupt architecture, a full duplex serial port, on-chip oscillator, and clock circuitry. In addition, the AT89S51 is designed with static logic for operation down to zero frequency and supports two software selectable power saving modes. The Idle mode stops the CPU while allowing the RAM, timer/counters, serial port, and interrupt system to continue functioning. The Power-down mode saves the RAM con-tents but freezes the oscillator, disabling all other chip functions until the next external interrupt or hardware reset. Pin configuration of the AT89S52 is as follows: 40-Lead PDIP VCC Supply voltage. GND Ground. Port 0 Port 0 is an 8-bit open drain bi-directional I/O port. As an output port, each pin can sink eight TTL inputs. When 1s are written to port 0 pins, the pins can be used as high-impedance inputs. Port 0 can also be configured to be the multiplexed low-order address/data bus during accesses to external program and data memory. In this mode, P0 has internal pull-ups. Port 0 also receives the code bytes during Flash programming and outputs the code bytes during program verification. External pull-ups are required during program verification. Port 1 Port 1 is an 8-bit bi-directional I/O port with internal pull-ups. The Port 1 output buffers can sink/source four TTL inputs. When 1s are written to Port 1 pins, they are pulled high by the internal pull-ups and can be used as inputs. As inputs, Port 1 pins that are externally being pulled low will source current (IIL) because of the internal pull-ups. Port 1 also receives the low-order address bytes during Flash programming and verification. P1.5 MOSI (used for In-System Programming) P1.6 MISO (used for In-System Programming) P1.7 SCK (used for In-System Programming) Port 2 Port 2 is an 8-bit bi-directional I/O port with internal pull-ups. The Port 2 output buffers can sink/source four TTL inputs. When 1s are written to Port 2 pins, they are pulled high by the internal pull-ups and can be used as inputs. As inputs, Port 2 pins that are externally being pulled low will source current (IIL) because of the internal pull-ups. Port 2 emits the high-order address byte during fetches from external program memory and during accesses to external data memory that use 16-bit addresses (MOVX @ DPTR). In this application, Port 2 uses strong internal pull-ups when emitting 1s. During accesses to external data memory that use 8-bit addresses (MOVX @ RI), Port 2 emits the contents of the P2 Special Function Register. Port 2 also receives the high-order address bits and some control signals during Flash programming and verification. Port 3 Port 3 is an 8-bit bi-directional I/O port with internal pull-ups. The Port 3 output buffers can sink/source four TTL inputs. When 1s are written to Port 3 pins, they are pulled high by the internal pull-ups and can be used as inputs. As inputs, Port 3 pins that are externally being pulled low will source current (IIL) because of the pull-ups. Port 3 receives some control signals for Flash programming and verification. Port 3 also serves the functions of various special features of the AT89S51, as shown in the following table. Alternate functions of port 3, P3.0 RXD (serial input port) P3.1 TXD (serial output port) P3.2 INT0 (external interrupt 0) P3.3 INT1 (external interrupt 1) P3.4 T0 (timer 0 external input) P3.5 T1 (timer 1 external input) P3.6 WR (external data memory write strobe) P3.7 RD (external data memory read strobe) RST Reset input. A high on this pin for two machine cycles while the oscillator is running resets the device. This pin drives High for 98 oscillator periods after the Watchdog times out. The DIS-RTO bit in SFR AUXR (address 8EH) can be used to disable this feature. In the default state of bit DISRTO, the RESET HIGH out feature is enabled. ALE/PROG Address Latch Enable (ALE) is an output pulse for latching the low byte of the address during accesses to external memory. This pin is also the program pulse input (PROG) during Flash programming. In normal operation, ALE is emitted at a constant rate of 1/6 the oscillator frequency and may be used for external timing or clocking purposes. Note, however, that one ALE pulse is skipped during each access to external data memory. If desired, ALE operation can be disabled by setting bit 0 of SFR location 8EH. With the bit set, ALE is active only during a MOVX or MOVC instruction. Otherwise, the pin is weakly pulled high. Setting the ALE-disable bit has no effect if the microcontroller is in external execution mode. PSEN Program Store Enable (PSEN) is the read strobe to external program memory. When the AT89S51 is executing code from external program memory, PSEN is activated twice each machine cycle, except that two PSEN activations are skipped during each access to external data memory. EA/VPP External Access Enable. EA must be strapped to GND in order to enable the device to fetch code from external program memory locations starting at 0000H up to FFFFH. Note, however, that if lock bit 1 is programmed, EA will be internally latched on reset. EA should be strapped to VCC for internal program executions. This pin also receives the 12-volt programming enable voltage (VPP) during Flash programming. XTAL1 Input to the inverting oscillator amplifier and input to the internal clock operating circuit. XTAL2 Output from the inverting oscillator amplifier. Memory Organisation, Program Memory: If the EA pin is connected to GND, all program fetches are directed to external memory. On the AT89S51, if EA is connected to VCC, program fetches to addresses 0000H through FFFH are directed to internal memory and fetches to addresses 1000H through FFFFH are directed to external memory. Data Memory: The AT89S51 implements 128 bytes of on-chip RAM. The 128 bytes are accessible via direct and indirect addressing modes. Stack operations are examples of indirect addressing, so the 128 bytes of data RAM are available as stack space. Interrupts: The AT89S51 has a total of five interrupt vectors: two external interrupts (INT0 and INT1), two timer interrupts (Timers 0 and 1), and the serial port interrupt. Each of these interrupt sources can be individually enabled or disabled by setting or clearing a bit in Special Function Register IE. IE also contains a global disable bit, EA, which disables all interrupts at once. The Timer 0 and Timer 1 flags, TF0 and TF1, are set at S5P2 of the cycle in which the timers overflow. The values are then polled by the circuitry in the next cycle. ADC0804 Æ’Â   The ADC080X family are CMOS 8-Bit, successive approximation A/D converters which use a modified potentiometric ladder and are designed to operate with the 8080A control bus via three-state outputs. These converters appear to the processor as memory locations or I/O ports, and hence no interfacing logic is required. The differential analog voltage input has good common-mode-rejection and permits offsetting the analog zero input voltage value. In addition, the voltage reference input can be adjusted to a low encoding any smaller analog voltage span to the full 8 bits of resolution. The functional diagram of the ADC080X series of A/D converters operates on the successive approximation principle. Analog switches are closed sequentially by successive-approximation logic until the analog differential input voltage [VlN(+) VlN(-)] matches a voltage derived from a tapped resistor string across the reference voltage. The most significant bit is tested first and after 8 comparisons (64 clock cycles), an 8- bit binary code (1111 1111 = full scale) is transferred to an output latch. The normal operation proceeds as follows. On the high-to-low transition of the WR input, the internal SAR latches and the shift-register stages are reset, and the INTR output will be set high. As long as the CS input and WR input remain low, the A/D will remain in a reset state. Conversion will start from 1 to 8 clock periods after at least one of these inputs makes a low to high transition. After the requisite number of clock pulses to complete the conversion, the INTR pin will make a high- to-low transition. This can be used to interrupt a processor, or otherwise signal the availability of a new conversion. A RD operation (with CS low) will clear the INTR line high again. The device may be operated in the free-running mode connecting INTR to the WR input with CS = 0. To ensure start-up under all possible conditions, an external WR pulse is required during the first power-up cycle. A conversion in process can be interrupted by issuing a second start command. Digital Operation The converter is started by having CS and WR simultaneously low. This sets the start flip-flop (F/F) and the resulting 1 level resets the 8-bit shift register, resets the Interrupt (INTR) F/F and inputs a 1 to the D flip-flop, DFF1, which is at the input end of the 8-bit shift register. Internal clock signals then transfer this 1 to the Q output of DFF1. The AND gate, G1, combines this 1 output with a clock signal to provide a reset signal to the start F/F. If the set signal is no longer present (either WR or CS is a 1), the start F/F is reset and the 8-bit shift register then can have the 1 clocked in, which starts the conversion process. If the set signal were to still be present, this reset pulse would have no effect (both outputs of the start F/F would be at a 1 level) and the 8-bit shift register would continue to be held in the reset mode. This allows for asynchronous or wide CS and WR signals. After the 1 is clocked through the 8-bit shift register (which completes the SAR ope ration) it appears as the input to DFF2. As soon as this 1 is output from the shift register, the AND gate, G2, causes the new digital word to transfer to the Three-State output latches. When DFF2 is subsequently clocked, the Q output makes a high-to-low transition which causes the INTR F/F to set. An inverting buffer then supplies the INTR output signal. When data is to be read, the combination of both CS and RD being low will cause the INTR F/F to be reset and the three state output latches will be enabled to provide the 8-bit digital outputs. Digital Control Inputs The digital control inputs (CS, RD, and WR) meet standard TTL logic voltage levels. These signals are essentially equivalent to the standard A/D Start and Output Enable control signals, and are active low to allow an easy interface to microprocessor control busses. For non-microprocessor based applications, the CS input (pin 1) can be grounded and the standard A/D Start function obtained by an active low pulse at the WR input (pin 3). The Output Enable function is achieved by an active low pulse at the RD input (pin 2). Analog Operation The analog comparisons are performed by a capacitive charge summing circuit. Three capacitors (with precise ratioed values) share a common node with the input to an autozeroed comparator. The input capacitor is switched between VlN(+) and VlN(-), while two ratioed reference capacitors are switched between taps on the reference voltage divider string. The net charge corresponds to the weighted difference between the input and the current total value set by the successive approximation register. A correction is made to offset the comparison by 1/2 LSB. Analog Differential Voltage Inputs and Common- Mode Rejection This A/D gains considerable applications flexibility from the analog differential voltage input. The VlN(-) input (pin 7) can be used to automatically subtract a fixed voltage value from the input reading (tare correction). This is also useful in 4mA 20mA current loop conversion. In addition, common-mode noise can be reduced by use of the differential input. The time interval between sampling VIN(+) and VlN(-) is 41/2 clock periods. There is maximum error voltage due to this slight time difference between the input voltage samples. The allowed range of analog input voltage usually places more severe restrictions on input common-mode voltage levels than this. An analog input voltage with a reduced span and a relatively large zero offset can be easily handled by making use of the differential input. Analog Input Current The internal switching action causes displacement currents to flow at the analog inputs. The voltage on the on-chip capacitance to ground is switched through the analog differential input voltage, resulting in proportional currents entering the VIN(+) input and leaving the VIN(-) input. These current transients occur at the leading edge of the internal clocks. They rapidly decay and do not inherently cause errors as the on-chip comparator is strobed at the end of the clock period. Input Bypass Capacitors Bypass capacitors at the inputs will average these charges and cause a DC current to flow through the output resistances of the analog signal sources. This charge pumping action is worse for continuous conversions with the VIN(+) input voltage at full scale. For a 640kHz clock frequency with the VIN(+) input at 5V, this DC current is at a maximum of approximately 5uA. Therefore, bypass capacitors should not be used at the analog inputs or the VREF/2 pin for high resistance sources (>1kOhm.) If input bypass capacitors are necessary for noise filtering and high source resistance is desirable to minimize capacitor size, the effects of the voltage drop across this input resistance, due to the average value of the input current, can be compensated by a full scale adjustment while the given source resistor and input bypass capacitor are both in place. This is possible because the average value of the input current is a precise linear function of the differential input voltage at a constant conversion rate. Input Source Resistance Large values of source resistance where an input bypass capacitor is not used will not cause errors since the input currents settle out prior to the comparison time. If a low-pass filter is required in the system, use a low-value series resistor for a passive RC section or add an op amp RC active low-pass filter. For low-source-resistance applications, a 0.1uF bypass capacitor at the inputs will minimize EMI due to the series lead inductance of a long wire. A 100Ohm series resistor can be used to isolate this capacitor (both the R and C are placed outside the feedback loop) from the output of an op amp, if used. Stray Pickup The leads to the analog inputs (pins 6 and 7) should be kept as short as possible to minimize stray signal pickup (EMI). Both EMI and undesired digital-clock coupling to these inputs can cause system errors. The source resistance for these inputs should, in general, be kept below 5kÃŽÂ ©. Larger values of source resistance can cause undesired signal pickup. Input bypass capacitors, placed from the analog inputs to ground, will eliminate this pickup but can create analog scale errors as these capacitors will average the transient input switching currents of the A/D (see Analog Input Current). This scale error depends on both a large source resistance and the use of an input bypass capacitor. This error can be compensated by a full scale adjustment of the A/D (see Full Scale Adjustment) with the source resistance and input bypass capacitor in place, and the desired conversion rate. Reference Voltage Span Adjust For maximum application flexibility, these A/Ds have been designed to accommodate a 5V, 2.5V or an adjusted voltage reference. This has been achieved in the design of the IC. Notice that the reference voltage for the IC is either 1/2 of the voltage which is applied to the V+ supply pin, or is equal to the voltage which is externally forced at the VREF/2 pin. This allows for a pseudo-ratiometric voltage reference using, for the V+ supply, a 5V reference voltage. Alternatively, a voltage less than 2.5V can be applied to the VREF/2 input. The internal gain to the VREF/2 input is 2 to allow this factor of 2 reduction in the reference voltage. Zero Error The zero of the A/D does not require adjustment. If the minimum analog input voltage value, VlN(MlN), is not ground, a zero offset can be done. The converter can be made to output 0000 0000 digital code for this minimum input voltage by biasing the A/D VIN(-) input at this VlN(MlN) value. This utilizes the differential mode operation of the A/D. The zero error of the A/D converter relates to the location of the first riser of the transfer function and can be measured by grounding the VIN(-) input and applying a small magnitude positive voltage to the VIN(+) input. Zero error is the difference between the actual DC input voltage which is necessary to just cause an output digital code transition from 0000 0000 to 0000 0001 and the ideal 1/2 LSB value (1/2 LSB = 9.8mV for VREF/2 = 2.500V). Full Scale Adjust The full scale adjustment can be made by applying a differential input voltage which is 11/2 LSB down from the desired analog full scale voltage range and then adjusting the magnitude of the VREF/2 input (pin 9) for a digital output code which is just changing from 1111 1110 to 1111 1111. When offsetting the zero and using a span-adjusted VREF/2 voltage, the full scale adjustment is made by inputting VMlN to the VIN(-) input of the A/D and applying a voltage to the VIN(+) input. Clocking Option The clock for the A/D can be derived from an external source such as the CPU clock or an external RC network can be added to provide self-clocking. The CLK IN (pin 4) makes use of a Schmitt trigger. Heavy capacitive or DC loading of the CLK R pin should be avoided as this will disturb normal converter operation. Loads less than 50pF, such as driving up to 7 A/D converter clock inputs from a single CLK R pin of 1 converter, are allowed. For larger clock line loading, a CMOS or low power TTL buffer or PNP input logic should be used to minimize the loading on the CLK R pin (do not use a standard TTL buffer). Restart During a Conversion If the A/D is restarted (CS and WR go low and return high) during a conversion, the converter is reset and a new conversion is started. The output data latch is not updated if the conversion in progress is not completed. The data from the previous conversion remain in this latch. Continuous Conversions In this application, the CS input is grounded and the WR input is tied to the INTR output. This WR and INTR node should be momentarily forced to logic low following a power-up cycle to insure circuit operation. Interfacing the Microcontroller Interfacing the ADC0804 with 8051 Æ’Â   As shown in the typica circuit, ADC0804 can be interfaced with any microcontroller. A minimum of 11 pins are required to interface the ADC0804, eight for data pins and 3 for control pins. As shown in the typical circuit the chip select pin can be made low if you are not using the microcontroller port for any other  peripheral  (multiplexing). There is a  universal  rule to find out how to use an IC. All we need is the datasheet of the IC we are working with and a look at the  timing diagram  of the IC which shows how to send the data, which signal to assert and at what time  the signal  should be made high or low, etc. Timing Diagrams, Pin Description 1.  Ã‚  CS, Chip Select: This is an active low pin and used to activate the ADC0804. 2.  Ã‚  RD, Read: This is an input pin and active low. After converting the analog data, the ADC stores the result in an internal register. This pin is used to get the data out of the ADC 0804 chip. When CS=0 high to low pulse is given to this pin, the digital output is shown on the pins D0-D7. 3.  Ã‚  WR, Write: This is an input pin and active low. This is used to instruct the ADC to start the conversion process. If CS=0 and WR makes a low to high transition, the ADC starts the conversion process. 4.  Ã‚  CLK IN, Clock IN: This is an input pin connected to an external clock source. 5.  Ã‚  INTR, Interrupt: This is an active low output pin. This pin goes low when the conversion is over. 6.   Vin+ : Analog Input . 7.   Vin- : Analog Input. Connected to ground. 8.  Ã‚  AGND: Analog Ground. 9.  Ã‚  Vref/2: This pin is used to set the reference voltage. If this is not connected the default reference voltage is 5V. In some application it is required to reduce the step size. This can be done by using this pin. 10.   DGND: Digital Ground. 11-18. Output Data Bits (D7-D0). 19. CLKR: Clock Reset. 20. Vcc: Positive Supply The above timing diagrams are from ADC0804 datasheet. The first diagram shows how to start a conversion. Also you can see which signals are to be asserted and at what time to start a conversion. So looking into the timing diagram  we note down the steps or say the order in which signals are to be asserted to start a conversion of ADC. As we have decided to make Chip select pin as low so we need not to bother about the CS signal in the  timing diagram. Below steps are for starting an ADC conversion. I am also including CS signal to give you a clear picture. While programming we will not use this signal. Make chip select (CS) signal low. Make write (WR) signal low. Make chip select (CS) high. Wait for INTR pin to go low (means conversion ends). Once the conversion in ADC is done, the data is available in the output latch of the ADC. Looking at the second diagram, which shows the  timing diagram  of  how to read  the converted value from the output latch of the ADC, data of the new conversion is only available for reading after ADC0804 made INTR pin low or say when the conversion is over. Below are the steps to read output from the ADC0804. Make chip select (CS) pin low. Make read (RD) signal low. Read the data from port where ADC is connected. Make read (RD) signal high. Make chip select (CS) high. Interfacing the LCD with 8051 Æ’Â   Pin Information of LCD: Pin No Name Description 1 Vss Ground 2 Vdd +5V 3 Vee Contrast Adjustment -2V to -5V 4 RS Register Select 5 RW 1 -Read , 0- Write 6 E Enable Strobe 7 D0 Data Line 8 D1 Data Line 9 D2 Data Line 10 D3 Data Line 11 D4 Data Line 12 D5 Data Line 13 D6 Data Line 14 D7 Data Line 15 LED+ Backlit LED +V   Vdd (Optional signal) 16 LED- Backlit LED -V   Vss (Optional signal) Algorithm to send data to LCD: 1.Make R/W low 2.Make RS=0 ;if data byte is command RS=1 ;if data byte is data (ASCII value) 3.Place data byte on data register 4.Pulse E (HIGH to LOW) 5.Repeat the steps to send another data byte LCD Initialization: Proper working of LCD depend on the how the LCD is initialized. We have to send few command bytes to initialize the LCD. Simple steps to initialize the LCD Specify function set: Send  38H  for 8-bit, double line and 57 dot character format. Display On-Off control: Send  0FH  for display and blink cursor on. Entry mode set: Send  06H  for cursor in increment position and shift is invisible. Clear display: Send  01H  to clear display and return cursor to home position. Writing software: The LCD module is an intelligent component. We communicate to LCD module by sending commands from microcontroller. To write data to LCD module separate sequence is followed for 4 bit and 8 bit mode. Writing command for 8 Bit mode: Write 8 bit data on D0-D7 Generate strobe by taking EN from high to low Writing command for 4 Bit mode: Write 4 bit data (upper nibble) on D4-D7 Generate strobe by taking EN from high to low Write 4 bit data (lower nibble) on D4-D7 Generate strobe by taking EN from high to low LCD Commands:   Instruction RS RW D7 D6 D5 D4 D3 D2 D1 D0 Description NOP 0 0 0 0 0 0 0 0 0 0 No Operation Clear Display 0 0 0 0 0 0 0 0 0 1 Clear Display and Address counter = 0 Cursor Home 0 0 0 0 0 0 0 0 1 x Address counter = 0 Entry mode set 0 0 0 0 0 0 0 1 I/D S Set cursor direction(I/D) and auto display shift (S) Display Control 0 0 0 0 0 0 1 D C B Turn display (D) and cursor (C) ON/OFF. Set cursor blinking(B) Cursor/ Display shift 0 0 0 0 0 1 S R/L x x Shift display/cursor (S), specify direction (R/L) Function set 0 0 0 0 1 DL N F x x Set Interface data width (DL), number of display lines (N), character font (F) Set CGRAM Address 0 0 0 1 Set CGRAM address (D0-D5), CGRAM data is sent after this command Set DDRAM Address 0 0 1 Set DDRAM address (D0-D6), DDRAM data is sent after this command Busy Flag and Address 0 1 BF Read busy flag (BF) and address counter(D0-D6) Write Data 1 0 Write data (D0-D7) into DDRAM/CGRAM Read Data 1 1 Read data (D0-D7) from DDRAM/CGRAM Legends used in table:- I/D:  Ã‚  Ã‚  Ã‚  Ã‚  1- Increment, 0- Decrement S:  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  1- Auto Display shift, 0 No display shift D:  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  1- Display ON, 0 Display OFF C:  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  1- Cursor ON, 0- Cursor OFF B:  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  1- Cursor blinking ON, 0 Cursor blinking OFF S:  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  1- Display Shift, 0 -Cursor move R/L:  Ã‚  Ã‚  Ã‚  1- Shift right, 0- Shift left DL:  Ã‚  Ã‚  Ã‚  Ã‚  1- 8 bit interface, 0- 4 bit interface N:  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  1- 2 lines, 0- 1 line F:  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  1- 5X10 dots font, 0- 5X7 dots f

Symbolic Healing in Toni Morrisons Beloved Essay -- Toni Morrison Bel

Symbolic Healing in Beloved  Ã‚     Toni Morrison’s powerful novel Beloved is based on the aftermath of slavery and the horrific burden of slavery’s hidden sins.   Morrison chooses to depict the characters that were brutalized in the life of slavery as strong-willed and capable of overcoming such trauma.   This is made possible through the healing of many significant characters, especially Sethe.   Sethe is relieved of her painful agony of escaping Sweet Home as well as dealing with pregnancy with the help of young Amy Denver and Baby Suggs.   Paul D’s contributions to the symbolic healing take place in the attempt to help her erase the past.   Denver plays the most significant role in Sethe’s healing in that she brings the community’s support to her mother and claims her own individuality in the process.   Putting her trust in other people is the only way Sethe is able to relieve herself of her haunted past and suffering body.   Morrison demonstrates that to overcom e the scars of slavery, one must place themselves in the hands of those that love them, rather than face the painful memories alone.   It is not surprising to see that Sethe named her second born daughter after the young girl that saved both of their lives.   Amy Denver, a white servant girl fleeing toward Boston, gave encouragement and first aid relief to Sethe’s swollen feet and helped her crawl to safety.   As Sethe lay dying on the uncomfortable ground, Amy approached her.   â€Å"She [Amy] gathered rocks, covered them with more leaves and made Sethe put her feet on them†¦then she did the magic: lifted Sethe’s feet and legs and massaged them until she cried salt tears† (Morrison, 35).   Amy is free of the thriving need to abuse slaves, and this ignorance proves beneficial.   U... ...port Sethe, and in return, Sethe chooses to accept their healing attempts and walks away from Beloved.   Slavery is and will always be within Sethe.   She was born a slave and raised a slave.   Crossing a river to freedom doesn’t change the torturous bonds of slavery.   The emotional barriers slavery places on people leave different effects but one thing remains common: the feeling of no self-worth.   Not all people are as lucky as Sethe to have people in their lives that help to overcome such obstacles.   With the help of Amy, Denver, Baby Suggs, Paul D, and others along her journey, Sethe is able to overcome the impossible and move on from her past with a life of love and acceptance. Works Cited Furman, Jan. Toni Morrison's Fiction. Columbia: University of South Carolina Press, 1996. Morrison, Toni. Beloved. New York, Penguin Books USA Inc, 1998.

Food Test to Determine the Presence of Reducing Sugars and Non-Reducing Sugars Essay

Apparatus/Materials: – Bunsen burner – Solutions A, B, C, D, E, F and G (unknown) – Measuring Syringes – Stirring Rod – Beakers – Test tubes (7)plus holder and tray – Copper sulphate solution (CuSO4) – White dropping ray – tripod stand and mesh -stopwatch – Biuret? s solution – Sodium Hydroxide solution (NaOH) (or Potassium Hydroxide solution) – Hydrochloric Acid (HCl) – Sodium Hydrogencarbonate (NaHCO3) – Iodine Solution(I2) (or Potassium Iodide solution) – Ethanol (C2H5OH) – distilled water (H2O) Test Method Reducing Sugars 2cm3 of solutions A-G were placed into separate, labelled test tubes using separate measuring syringes. An equal volume (2cm3) of Benedict? s solution was then added to the solutions in the test tubes. The tubes were then gently shaken and placed in a water bath until any possible change in colour was noticed. Observation Inference/Explanation A- changed from a transparent bluish colour to purple. B- changed from a bluish colour to a yellow orange colour from the surface; middle began turning green; then entire solution turned bright orange in colour. C- turned from blue to a dark blue/purple. D- no reaction E- no reaction F- changed from a bluish colour to a yellow orange colour from the surface; middle began turning green;then entire solution turned bright orange in colour. G- no reaction. Benedict? s solution contains copper sulphate. Reducing Sugars reduce soluble blue copper sulphate, containing copper (II) ions (Cu2+) to insoluble red-brown copper oxide containing copper (I). The latter is seen as a precipitate. Therefore, solutions containing reducing sugars were: B and F. Those not containing reducing sugars were: A, C, D, E, and G. Test Method Observation Inference Nonreducing Sugars 2cm3 of solutions A-G were placed into separate, labelled test tubes using separate measuring syringes. 1cm3 of Hydrochloric (HCl) acid was then added to thesolution in the test tubes. The test tubes were placed into the water bath for one minute and were then neutralized with 2cm3 sodium hydrogencarbonate (NaHCO3). The Benedict? s test was then carried out (where an equal volume2cm3 -of Benedict? s solution was then added to the solutions in the test tubes. The tubes were then gently shaken and placed in a water bath until any possible change in colour was noticed. ). A- no reaction B- changed from a bluish colour to a yellow orange colour from the surface; middle began turning green; then entire solution turned bright orange in colour. C- no reaction D-changed from a bluish colourto a yellow orange colour from the surface; middle began turning green; then entire solution turned bright orange in colour. E- no reaction F-changed from a bluish colour to a yellow orange colour from the surface; middle began turning green; then entire solution turned bright orange in colour. G– changed from a bluish/ purple colour to a yellow orange colour from the surface; middle began turning green; then entire solution turned bright orange in colour. A disaccharide can be hydrolyzed to its monosaccharide constituents by boiling with dilute hydrochloric acid. Sucrose, for example, is hydrolyzed to glucoseand fructose, both of which are reducing sugars (and would give the reducing sugar result with the Benedict? s test) 2cm3 of solutions A-G were placed into separate, labelled test tubes using separate measuring syringes. An equal volume (2cm3) of sodium hydroxide solution were added to the solutions in the test tubes and mixed. Approximately two drops of Copper Sulphate solution was added and mixed. Observations were recorded. A- changed from a colourless solution to a purple/lilac colour. B- no reactio C-changed from a colourless solution to a purple/lilac colour. D- no reaction E- no reaction, but solution E floated above the added

Leaders: Strategies for Taking Charge by Warren Bennis

Leadership (management in another way) is found to be the most crucial topic of corporate America. Leaders: Strategies for Taking Charge by Warren Bennis and Burt Nanus explain the four important keys to effective leadership. These four keys are attention through vision, meaning through communication, trust through positioning and the deployment of self. The leadership keys would explain how a manager (who do things right) is different from a leader (who do the right thing). This management mantra is very much helpful for organizations (companies of all kind). Vague restructuring, absence of leadership and lack of trust and communication has made the workplaces and companies a living pandemonium. Managers with great management insight can only save these sinking business entities. Leaders: Strategies for Taking Charge is a clever advice to both big and small managers alike. The authors Warren Bennis and Burt Nanus are Professors in Business Management. The former has more than 40 years experience in management literature and the latter had first hand management experience in several companies. Warren Bennis has even served as advisor of U.S. Presidents. He had served as a university administrator and has advised several Fortune 500 companies. He had been the President of the University of Cincinnati for 7 years. Burt Nanus, on the other hand has worked as a Professor Emeritus of Management at the University of Southern California. The management ideas of these gurus have made Leaders: Strategies for Taking Charge an excellent management text. Leaders: Strategies for Taking Charge is a book that would help managers cultivate excellent management skills that would also make their organization go up in the ladder. Chicago Tribune has commented about the book as a ‘one of the most important books of its type in a long time’. The book emphasizes that leadership (and management) skills are learnable and are not fully in-born. The book would be really boosting for managers though certain sections appear bit dry. The book is highly rewarding for management students also who is about to reach the chair of a manger. The book is considered as one of the top 50 business books of all time by the Financial Times. The book says that the speed and pervasiveness of technological change would be the most disturbing factor of the leaders of this present age. Organizations need to be filled with expert workers who can handle jobs independently. The mangers therefore should be able to handle these complex situations with great managing skill. Leaders: Strategies for Taking Charge explain those skills that would help a manager excel in an organization of any kind. The book would equip managers with skills that would help them successfully handle the rapid technology updates. It also would educate the leaders how to mange the organizational and structural developments. Leaders can learn the basic management skills identified by the authors and apply them in their organizations. Authors have completely undermined the traditional myths about leadership, and have proved that management is a set of skills that can be learned, studied, and mastered by voluntary attempts. They have also come up with certain key insights of leadership. For example ‘Leaders must display a passion to realize their vision’, ‘Leadership is about character’, ‘Leaders must be able to generate and sustain trust’ etc. Leaders: Strategies for Taking Charge is thus a really treasure to any manager or future manager. Works Cited Warren G. Bennis and Burt Nanus, Leaders: Strategies for Taking Charge, 1997. Â  

Noble Gases List

Noble Gases List The elements in the last column or group of the periodic table share special properties. These elements are noble gases, sometimes called inert gases. Atoms belonging to the noble gas group have completely filled their outer electron shells. Each element is non-reactive, has high ionization energy, electronegativity near zero, and a low boiling point. Moving down the group in the periodic table from top to bottom, the elements become more reactive. While helium and neon are practically inert and are gases, the elements further down the periodic table more readily form compounds which are more easily liquefied. Except for helium, all of the names of the noble gas elements end with -on. Elements in the Noble Gas Group Helium  (He, atomic number 2) is an extremely light, inert gas at room temperature and pressure. The liquid form of the element is the only liquid known to man that cannot be solidified, no matter how low the temperature drops. Helium is so light it can escape the atmosphere and bleed away into space.Neon  (Ne, atomic number 10) consists of a mix of three stable isotopes. The element is used to make signs and gas lasers and as a refrigerant. Neon, like helium, is inert under most conditions. However, neon ions and unstable clathrates are known. Like all noble gases, neon glows a distinctive color when excited. The characteristic reddish-orange glow of signs comes from excited neon.Argon  (Ar, atomic number 18) in nature is a mixture of three stable isotopes. Argon is used in lasers and to provide an inert atmosphere for welding and chemicals, but it can form clathrates and has been known to form ions. Argon is heavy enough that it doesnt readily escape Earths gravity, so it is present in appreciable concentrations in the atmosphere. Krypton  (Kr, atomic number 36) is a dense, colorless, inert gas. Its used in lasers and lamps.Xenon  (Xe, atomic number 54) in nature consists of a mix of stable isotopes. The pure element is inert and non-toxic, but it forms compounds which may be colored and are toxic because they display strong oxidizing tendencies. Xenon is encountered in everyday life in xenon lamps such as strobe lamps and some vehicle headlamps.Radon  (Rn, atomic number 86) is a heavy noble gas. All of its isotopes are radioactive. Although colorless under ordinary conditions, radon is phosphorescent as a liquid, glowing yellow and then red.Oganesson (Og, atomic number 118) presumably would behave like a noble gas but would be more reactive than the other elements in the group. Only a few atoms of oganesson have been produced, but it is believed that it will be a liquid or solid at room temperature. Oganesson is the element with the highest atomic number (mostly protons) on the periodic table. It is ext remely radioactive.

Gentic Catastrophe essays

Gentic Catastrophe essays While the 20th century was shaped largely by spectacular breakthroughs in the field of physics and chemistry, the 21st century will belong to the biological sciences. Scientists around the world are quickly deciphering the genetic code of life, unlocking the mystery of biological evolution on Earth. As a result of the new breakthrough in biology and biotechnology, our way of life is likely to be more fundamentally transformed in the next several decades than in the previous thousand years. By the year 2025, we and our children may be living in a world utterly different from anything human beings have ever experienced in the past (Rifkin 30). Some ideas in genetic science are fast growing dilemmas that society is going to have to deal with in time. Producing a superior race by altering peoples genetic code or cloning, is thought to be unethical. In the future what would stop families that can afford to program superior genetic traits into their fetuses at conception that will ensure their offspring an even greater biological advantage and thus a social and economic advantage as well. This would affect the people without an altered genetic code because as stated in Darwins theory that only the strong survive, people without altered genes would become less efficient and would not survive as well in society. Molecular biologist Lee Silver of Princeton University writes about that in a not too distant future, society will be made up of two distinct biological classes, which he refers to as the Gene Rich and the Naturals. The Gene Rich, who will account for 10% of the population, have been enhanced with synthetic genes and wi ll become the rulers of society. They would include Gene Rich businesspeople, musicians, artists, intellectuals, and athletes each enhanced with specific synthetic genes to allow them to succeed in their respective fields in wa ...

Presidential Appointments Requiring Senate Approval

Presidential Appointments Requiring Senate Approval What a compliment! The President of the United States has named you to fill a top-level government position, maybe even a Cabinet-level job. Well, enjoy a glass of bubbly and take some slaps on the back, but dont sell the house and call the movers just yet. The president may want you, but unless you also win the approval of the U.S. Senate, its back to the shoe store on Monday for you. Across the federal government, nearly 1,200 executive-level jobs may be filled only by individuals appointed by the president and approved by a simple majority vote of the Senate. For new incoming presidents, filling many, if not most, of these vacated positions as quickly as possible represents a major part of their presidential transition process, as well as taking a significant portion of time throughout the remainder of their terms. What Kind of Jobs are These? According to a Congressional Research Service report, these presidentially-appointed positions requiring Senate approval can be categorized as follows: Secretaries of the 15 Cabinet agencies, deputy secretaries, undersecretaries, and assistant secretaries, and general counsels of those agencies: Over 350 positionsJustices of the Supreme Court: 9 positions (Supreme Court justices serve for life subject to death, retirement, resignation or impeachment.)Certain jobs in the independent, non-regulatory executive branch agencies, like NASA and the National Science Foundation: Over 120 positionsDirector positions in the regulatory agencies, like the Environmental Protection Agency and the Federal Aviation Administration: Over 130 positionsU.S. Attorneys and U.S. Marshals: About 200 positionsAmbassadors to foreign nations: Over 150 positionsPresidential appointments to part-time positions, like the Board of Governors of the Federal Reserve System: Over 160 positions Politics Can Be a Problem Certainly, the fact that these positions require the approval of the Senate poses the possibility that partisan politics may play a critical role in the presidential appointment process. Especially during times when one political party controls the White House and another party holds a majority in the Senate, as was the case during the second term of President Barak Obama, Senators of the opposition party are more likely to try to delay or reject the president’s nominees. But There are ‘Privileged’ Nominations Hoping to avoid those political pitfalls and delays in the presidential nominee approval process, the Senate, on June 29, 2011, adopted Senate Resolution 116, which established a special expedited procedure governing Senate consideration of certain lower-level presidential nominations. Under the resolution, over 40 specific presidential nominations- mostly assistant department secretaries and members of various boards and commissions- bypass the Senate subcommittee approval process. Instead, the nominations are sent to the chairpersons of the appropriate Senate committees under the heading, â€Å"Privileged Nominations – Information Requested.† Once the committees’ staffs have verified that the â€Å"appropriate biographical and financial questionnaires have been received† from the nominee, the nominations are considered by the full Senate. In sponsoring Senate Resolution 116, Senator Chuck Schumer (D-New York) stated his view that because the nominations were for â€Å"noncontroversial positions,† they should be confirmed on the floor of the Senate by â€Å"unanimous consent†- meaning they are all approved at the same time by a single voice vote. However, under the rules governing unanimous consent items, any Senator, for himself or herself or on the behalf of another Senator, can direct that any particular â€Å"privileged† nominee be referred to Senate committee and considered in the usual fashion. Recess Appointments: The Presidents’ End Run Article II, Section 2 of the U.S. Constitution gives presidents a way to at least temporarily bypass the Senate in making presidential appointments. Specifically, the third clause of Article II, Section 2 grants the president the power to â€Å"fill up all Vacancies that may happen during the Recess of the Senate, by granting Commissions which shall expire at the End of their next Session.† The courts have held that this means that during times the Senate is in a recess, the president can make appointments without the need for Senate approval. However, the appointee must be approved by the Senate by the end of the next session of Congress, or when the position becomes vacant again. While the Constitution does not address the issue, the Supreme Court in its 2014 decision in the case of National Labor Relations Board v. Noel Canning ruled that the Senate must be in recess for at least three consecutive days before the president can make recess appointments. This process, popularly known as â€Å"recess appointments,† is often highly controversial. In an attempt to prevent recess appointments, the minority party in the Senate often holds â€Å"pro forma† sessions during recesses lasting longer than three days. While no legislative business is conducted in a pro forma session, they ensure that Congress is not officially adjourned, thus blocking the president from making recess appointments. Presidentially Appointed Jobs With No Senate Needed If you really want to work â€Å"at the pleasure of the president,† but don’t want to have to face the scrutiny of the U.S. Senate, there are more than 320 other high-level government jobs that the president can fill directly without the Senate’s consideration or approval. The jobs, known as PA, or â€Å"Presidential Appointment† jobs pay from about $99,628 to about $180,000 per year and offer full federal employee benefits, according to the Government Accountability Office.

Weight Watchers and their Benefits Essay Example | Topics and Well Written Essays - 500 words

Weight Watchers and their Benefits - Essay Example Weight watchers have a comprehensive move in a right direction with the best possible options listed below: These e tools enable you to keep a check on your food choices, help you see regular updates on your weight loss progress with a graphical representation, give you a BMI calculator to let you know how much you need to lose, facilitates you to have fitness sessions, salsa dance, yoga, aerobics etc through videos. Weight watchers offer a choice in the food plan. With the flexible food plan you can choose amongst the various options available with the food points. You just need to maintain the total day points and keep having various combinations. The core plan though does not give this option; it has a list of various low calorie food choices to keep you healthy and filled throughout. Through the rich experience of weight watchers, they have a clear understanding that men have women have different needs for weight loss. Moreover, the frequency of loss and the tendency also vary. Weight watchers have designed specific tools for men keeping in mind the specifics attached to their needs. It is of course understand to have dietary measures while weight loss, but one cannot keep starving when he is hungry or just feels like eating. Weight watchers keep your food needs in mind and give you various recipes which would let you keep your taste buds satisfied and the calorie intake intact. There are different options for different kinds of meals and the choice is enormous to let you have nice lunch, dinner and snacks. Weight Watchers have meetings for its members where there is a leader who has lost weight in such sessions. Here, there are discussions about the best ways of losing weight, acting in a healthy way in a particular situation. These 40-45 minutes meetings also let you learn through the experience of others. Moreover, this is more a platform of learning with regular guidance. You can

The role of arbitration in settling foreign invetment related Dissertation

The role of arbitration in settling foreign invetment related disputes' - Dissertation Example It will be argued that despite the lack of an international convention or codification of investor-state FDI law, customary law and the doctrine of fair and equitable treatment as interpreted by arbitrators has inspired sufficient confidence in arbitration and as such, FDI. It will therefore be argued that the role of arbitration as a method of resolving ISA in FDI relate disputes is very important to promulgating FDIs. To substantiate this hypothesis, this dissertation will examine and analyse the rapid growth of BITs, the fair and equitable treatment clause and the arbitration clauses typically included in BITs. An analysis of resulting arbitration awards will also be conducted. The provision for institutional and ad hoc ISA in BITs will also be examined. Contents Abstract 2 Contents 3 Introduction 5 I.Research Questions 7 II.Statement of the Problem 8 III.Significance of the Study 10 IV.Aims and Objectives 11 V.Research Methods and Designs 11 A.Research Methods 11 B.Research Desig n 13 Chapter Two 14 The Investor State Relationship 14 Introduction 14 I.Investor/State Relationships 14 A.Definition of Foreign Direct Investment 14 B.FDI and Investor-State Relations 17 II.Issues Arising in FDIs Between the Foreign Investor and the Host State 20 A.The Risk of Expropriation Without Compensation 21 B.The Need For Fair and Equitable Treatment 23 C.The Risk of the Host State Changing the Regulatory Framework Once The Investment is Made. 26 D.The Risk of Contract Breaches and Breaches of Other Promises and Violations of International Law 27 III.International Investment Treaties 28 A.Compensation 30 B.Currency Control 31 C.Non-discriminatory Treatment 32 D.Full Protection and Security 35 E.Umbrella Clauses 36 F.Minimum Treatment Standard 37 G.Fair and Equitable Treatment 39 Conclusion 42 Chapter Three 44 Investor-State Arbitration: Substantive and Procedural Laws 44 I.Investor/State Arbitration: The Washington Convention 44 II. Arbitration Decisions 49 Conclusion 60 Cha pter Summary 61 Chapter Four 62 Findings/Conclusion 62 Findings 62 Conclusion 65 Bibliography 67 Chapter One Introduction Over the past 20 years, the number of FDI treaties have tripled.3 Since the 1970s the rate of growth of FDIs has eclipsed that of the growth of worldwide exports by double. This trend continues today.4 The proliferation of FDI is attributed to the â€Å"widespread liberalization of the FDI regulatory framework† as well as advancement in information technologies and the intensification of business competition. A majority of states have implemented institutional and policy reforms that appeal to FDI and have improved treatment and protection standards. These changes reflect the popular view that FDIs are associated with the introduction of capital, skills, technology, employment and access to markets. The main objective in implementing foreign investment treaties, particularly BITs is to let investors know that their investments will have the benefit of lega l protection and to encourage the inflows from FDIs.5 By year end 2010, the number investor/state arbitration (ISA)

Community Communication Essay Example | Topics and Well Written Essays - 500 words

Community Communication - Essay Example Normally, we find ourselves bound to care with one another in a community not only because we readily understand the necessity of survival through interactive relationship but even for the natural truth in historicity where there emerges discernment of historical background that enables one person to gauge the other in terms of a continuing culture they have both lived with though at separate places and time. The mutual respect or concern established toward a cultural or religious tradition, for instance, may hold us within a sensible meaning of community in which while we distinguish individual selves with unique identity to develop for personal growth, we know somewhere from the inner core that our mutuality in beliefs and principles sets us apart from certain degree of plural indifference. Since a community is quite characteristic of norms when it comes to general views or opinions on matters of common interest, we are more likely to form social attitudes and standards based on these norms. Our adherence to a specific standard which is made by the majority in the community eventually becomes or aligns with our own as we give value or judgment to an object or person. Such act of paying someone worth or opinion comes out either just or unjust, hurtful or favorable on the basis of how the former interprets and reacts to the community’s overall perception of him or her. Consequently, the community becomes a ‘sum’ to look at or respond to and in return, it also collects to itself from individual ideas that share similar attributes in order to project a law that almost everyone is drawn to follow in the course of nature. In this regard, thus, communication is hugely significant especially in expressing one’s insights and feelings that would help the community make the necessary adjustment in recognizing the real value of a member or one that is

Bauhaus goals Essay Example | Topics and Well Written Essays - 500 words

Bauhaus goals - Essay Example Traditionally, it consumes sometimes and dedication for a craftsman to assumes control of his artistic skills. It further demands grace notably from heaven to facilitate the change of the work into art. Bauhaus was destined to create an existence of the proficiency amongst the students so as the achieve gesamtkunstwerk. For Bauhaus to achieve gesamtkunstwerk amongst its students, it would create or nurture a continuous and existent environment of creative imagination by facilitating eruption or genesis point of creativity. Creativity comes from within, but it must be nurtured and continuously watered to ensure the acquisition of competent and appreciated artwork. According to Gropius, an established difference between craftsmen and artists was should not border in the bounds of arrogance and class but only in the level of accomplished output level. He calls on the fraternity of Bauhaus to create a new group or guild of craftsmen basing on a clear and well outlined. The call creates r inging version on Bauhaus students to conceive and generate new construction of the prospect future that embraces a combination of architecture, painting and sculpture in an expounded single unity and that may rise in days to come for heaven. It creates a symbolic essence that merges up to form feature similar to those of a million workers assumed in the crystal symbol nature of a new faith base. The clear notation of the current craftsmanship emerges from the realization that future applications mainly entails mass production.

Machiavelli Essay Example | Topics and Well Written Essays - 250 words - 1

Machiavelli - Essay Example The philosopher believes that a real leader should be cunning as diplomacy as well as war needs this quality. Machiavelli also stresses that rulers should be compassionate but cruel whenever it is necessary. The thinker states that the leader should â€Å"desire to be considered clement and not cruel† but he also â€Å"ought to take care not to misuse this clemency† (Machiavelli 40). Of course, the leaders should be compassionate, which usually results in people’s support. However, to maintain order in the country, it is often important to display certain degree of cruelty to make people respect and even fear the leader. In conclusion, it is possible to note that Machiavelli stresses that the leader should be able to keep the balance between strength and craft, cruelty and compassion. According to the philosopher, the ruler will be able to gain respect and support of his people if he can use force, show compassion, keep the word, and even be able to use craft, as the consequence is more important than the tools

Business enivronemnts Essay Example | Topics and Well Written Essays - 1250 words

Business enivronemnts - Essay Example External factors have the capacity to determine whether an organization adopts new technologies. In the IT company I worked for, one of the external factors that placed the company under pressure was the rival adoption of the technology. Notably, there is an increased competition between information technology companies. Since many of the companies operating in the same industry had not adopted the new technology, the company had to carry out a critical analysis of its potential benefits. Theorists have highlighted that it is easier to adopt a new technology when other companies in the industry have already adopted and implemented the technology. The reason for this emanates from the fact that when the first company adopts the technology, other companies can learn how to implement it and can discern the potential benefits. In addition, prices are likely to be lower. Organizations that choose to go fast in the adoption of new technology undergo experiential learning. This was the case with the IT company, which sought to adopt a new technology that competitor had not received. However, the competitors were not the only external factors. The company considered the social factors of the new technology. Worth noting is the fact that the information and technology sector presents numerous social impacts.

Machiavelli Essay Example | Topics and Well Written Essays - 250 words - 1

Machiavelli - Essay Example The philosopher believes that a real leader should be cunning as diplomacy as well as war needs this quality. Machiavelli also stresses that rulers should be compassionate but cruel whenever it is necessary. The thinker states that the leader should â€Å"desire to be considered clement and not cruel† but he also â€Å"ought to take care not to misuse this clemency† (Machiavelli 40). Of course, the leaders should be compassionate, which usually results in people’s support. However, to maintain order in the country, it is often important to display certain degree of cruelty to make people respect and even fear the leader. In conclusion, it is possible to note that Machiavelli stresses that the leader should be able to keep the balance between strength and craft, cruelty and compassion. According to the philosopher, the ruler will be able to gain respect and support of his people if he can use force, show compassion, keep the word, and even be able to use craft, as the consequence is more important than the tools

I Essay Example | Topics and Well Written Essays - 500 words

I - Essay Example This may result to inefficient allocation of resources and consumers to change their behaviors towards the market and so there is a need for the government to intervene. What more could happen if two large companies will merge? And these companies happen to cater services that are of importance to our fast moving lives- the telecommunications services? On November 24, 2011, an article entitled â€Å"AT&T Merger with T-Mobile Faces Setbacks† was published on nytimes.com by Edward Wyatt and Jenna Wortham. They talked about the problems that the two mobile companies, AT &T and T-Mobile, are facing with their planned merging. AT&T is one of the largest telecommunications services provider in the United States and even worldwide. Its services include wireless communications, local exchange services, long-distance services, data/broadband and Internet services, video services, managed networking, wholesale services and directory advertising and publishing. In March of 2011, it announced its plan to merge with T-Mobile which is owned by Deutsche Telekom. The former agreed to buy T-Mobile from Deutsche Telekom for $39 billion. But of course, the merger was subject to F.C.C. approval because the joining of the two companies would have required transfer of licenses to use public airwaves for cellular phone signals and wireless Intern et access (Wyatt & Wortham, 2011). Being a monopoly or even just a big player in an industry yields many advantages and if not properly monitored will affect the consuming individuals negatively. In the case of these telecommunications merger, different sectors from the society are paying close attentions. The Justice Department for example has said that the merger would severely restrict competition, Federal Communications Commission officials have added that AT&T’s confidential filings indicate the merger would eliminate jobs and consumer groups who closely monitored the actions of the authorities said that their combined actions indicated

Surface State in Bi1.5Sb0.5Te1.7Se1.3 Nanoflakes

Surface State in Bi1.5Sb0.5Te1.7Se1.3 Nanoflakes Result of a study on the surface state in Bi1.5Sb0.5Te1.7Se1.3 nanoflakes 4.1 Introduction The recent discovery of topological insulators (TIs) has provided new route for producing low-dimensional relativistic electronic states. The exotic surface states of TIs have attracted the attention of scientists because of their fascinating physical properties and applicability in spintronics and quantum computations [24-28]. The unique surface states were confirmed by angle-resolved photoemission spectroscopy (ARPES) experiments and scanning tunneling microscopy (STM) on Sb2Te3, Bi2Te3, and Bi2Se3 [29-34]. Magnetotransport studies have also provided a clear picture of the topological surface state and the  ° Berry phase shift [35, 36],which gives rise to the immunity of Dirac fermions to localization. Bi2Te3 and Bi2Se3 are suitable candidates for TI studies because of their large energy gaps. Eg is approximately equal to 0.3 eV and 0.17 eV. However, the metallic bulk conduction of natural imperfections, such as vacancies or antisite defects in these materials, makes it difficult to probe surface Dirac fermions. Therefore, a high-insulating bulk state is a prerequisite for transport property studies of TIs. Substantial effort has made it possible to examine both the surface and the bulk channels either through electrical gating [36-42] or substitution doping [12-14, 42]. Recently, it was discovered that Bi2-xSbxTe3-ySey (BSTS) is a high-insulating bulk TI. BSTS exhibits a tetradymite structure, a low carrier concentration (2.3 Ãâ€" 1016 cm3), and a large bulk resistivity (8 ÃŽ © cm) because of the ordered occupation of Te/Se in the quintuple-layer unit [12, 13]. However, a reliable detection of surface quantum oscillations is difficult in BSTS flakes because of the inhomogeneous defect [12] and low surface mobility [40]. Thus, the low mobility in a bulk channel plays a crucial role in probing surface quantum oscillations. In this chapter, we report the observation of surface-dominated transport in the topological insulator BSTS nanoflakes. Shubnikov-de Hass (SdH) oscillations study on the 200-nm BSTS nanoflake indicates that the achievement of surface-dominated transport can be attributed its high surface mobility of 2602 cm2/Vs (top surface), 3657 cm2/Vs (bottom surface), and low bulk mobility of 12 cm2/V s, which is a much lower value than those reported [12-13, 40-41]. Besides, the nontrivial Dirac surface state was further confirmed by the weak anti-localization (WAL) effect and the semiconducting to metallic transport transformation as the thickness of the specimen was reduced to the thin film limit, in which a up to 90% contribution from the surface channel was estimated based on the thickness dependence of the electrical conductance and the result of the SdH oscillations. 4.2 Method BSTS single crystals nominally composed of Bi1.5Sb0.5Te1.7Se1.3 were grown by melting the mixture of Bi (99.999%), Sb (99.999%), Te (99.999%), and Se (99.999%) in sealed evacuated quartz tubes. First the mixture was slowly ramped up to 750  °C at a rate of 100  °C/h and kept at 750  °C for 12 h. It was then furnace cooled to room temperature at a rate of 100  °C/h. The sample was reground and sintered again. The same procedure was repeated three times to ensure sample homogeneity. Finally, the sample was heated to 800  °C for 48 h, then cooled to 500  °C and annealed for 96 h. The crystal structures of the samples were identified using powder X-ray diffraction and refined using the General Structure Analysis System (GSAS) software package equipped with the EXPGUI interface, as shown in Figure 4.1(a). Transport measurements were conducted using a Quantum Design Physical Property Measurement System (PPMS) and six-terminal Hall bar geometric specimens. The nanoflake specimens [Figure 4.1(b)] were mechanically exfoliated and transferred to the Si3N4 (200 nm)/Si substrate. The electrodes of the nanoflake were patterned using standard e-beam lithography and thermal evaporation of Ti/Au. Figure 4.1. (a) GSAS refinement of powder X-ray data of a BSTS crystal. Red circles represent experimental results, the green line represents calculated results, the blue line indicates the difference, and the Bragg peaks of the BSTS are shown by the vertical lines, where Rp, Rwp, and à ¯Ã‚ Ã‚ £2 represent the goodness factors. (b) The SEM image of a BSTS 160-nm nanoflake. 4.3 Results and discussion 4.3.1 Thickness and temperature dependence of resistance The considerable thickness dependence of electrical transport showed a transition from semiconducting to metallic behavior as the bulk content is reduced, as shown in Figure 4.2 (a). For the thick specimens, the thermal activation energies given by the Arrhenius law were 4.3 meV (140 ÃŽ ¼m), 3.5 meV (49 ÃŽ ¼m), and 2.37 meV (7 ÃŽ ¼m). The smaller activation energy of thinner specimens can be explained by the increasing contribution of surface states [12-13, 40-41]. In 140-ÃŽ ¼m BSTS, a significant deviation occurred below 20 K from the fitting to a three-dimensional variable-range hopping model (3D VRH) with Rxx is approximately exp[(T/T0)-1/4] [13], indicating the existence of a parallel metallic conduction of surface states [the inset in Figure 4.2 (a)]. According to Eq. 4.1, the total conductance G ° of a specimen with a thickness t can be formulated as G ° = Gs + à ¯Ã‚ Ã‚ ³bt, (4.1) where Gs is the surface sheet conductance, and ÏÆ'b is the bulk conductivity [38,42]. Gs =36.2 (e2/h) and à ¯Ã‚ Ã‚ ³b = 4.14 (e2/h) ÃŽ ¼m−1, which resulted from the fit of thickness dependence of conductance to Eq. 4.1. For a 200-nm nanoflake at 2 K, up to 90% of the contribution from the surface state was obtained, as shown in Figure 4.2 (b). Figure 4.2. (a) Temperature dependence of resistivity for BSTS specimens with thicknesses of 140 ÃŽ ¼m, 200 nm, 160 nm, and 80 nm. The inset shows the fit of 3D variable-range hopping to the 140-lm specimens. (b) Thickness dependence of sheet conductance; the red line is the fit with G ° = Gs + à ¯Ã‚ Ã‚ ³bt. The inset shows the fitting of the Arrhenius law to the 140-ÃŽ ¼m specimen. 4.3.2 Hall measurements of BSTS To understand the semiconductor-metallic transitions, we focus on the charge transport behavior (Figure 4.3) and temperature dependence Hall measurement results of 160 nm specimen (Figure 4.4). Because of that the thickness seems like to the critical in between semiconductor and metallic transition. In Figure 4.3 (a), we gives three regimes in the temperature profile, one can obtain the nanoflake specimen with 160 nm thick showing metallic behavior which contrasts to its bulk. In the regime I, the bulk conduction dominates, as the temperature decreases the resistance increased which shows a general narrow-gap semiconductor behavior this can be attributed to freezing of the impurity band carrier in the bulk [27]. The regime II reveals a typical metallic behavior signature, the resistance decreases as temperature reduced, this can be explained as reduce phonon scattering and nearly constant carrier density (shown in Figure 4.4 (a)) with a decreasing temperature. In regime III, when the temperature is lower than 10 K, a slightly increases in resistance due to the bulk carriers freeze out [28]. Hall mobility measurements provide more clearly picture to realize the thickness dependence charge transport as shown in Figure 4.4 (b). The reduction in the degree of disorder or impurity of specimens can be obtained in Figure 4.4 (b) that the mobility enhanced as thickness decreased and their different temperature dependence trends. In thinner specimens (160 and 80 nm) the mobility shows monotonically increasing as decreasing temperature, surface dominate transport should play a more important role in this manner. Figure 4.3. Temperature dependence of the normalized resistance of specimens. Figure 4.4 (a) Temperature dependence of the Hall measurement results of 160 nm thick specimen. (b) Thickness dependence of Hall mobility versus temperature curve. 4.3.3 Surface quantum oscillations (Shubnikov-de Haas oscillations) Because successive empting of Landau levels (LLs) provides the nth minima in à ¯Ã†â€™Ã‚ ³Rxx, the relation of the LL index n to the Fermi surface cross-section area AF can be described using the semiclassical Onsager equation: 2 ° (n + à ¯Ã‚ Ã‚ §) = AF Ä § / eB. For the Schrodinger electron case, à ¯Ã‚ Ã‚ § = 0, which results in a zero Berry phase. à ¯Ã‚ Ã‚ § = 1/2 indicates the case of the Dirac fermion of TIs, which results in a  ° Berry phase where the charge carrier is immune to localization. The temperature dependence of resistance for a 200-nm nanoflake shows à ¯Ã†â€™Ã‚ ³Rxx as a function of 1/B after a smoothing background subtraction, as shown in Figure 4.5 (a). Two sets of oscillation periods are marked; one with a black dashed line ([(à ¯Ã†â€™Ã‚ ³(1/B) = 0.041 T-1]) and the other with a blue dashed line (0.022 T-1) for the surfaces of the nanoflake specimen. The multicomponent nature of SdH oscillations originates from the Fermi-level positions of the two surfaces. If SdH oscillations are as a result of the two-dimensional electron gas (2DEG) formed with band bending near the surface, the corresponded carrier density differs in an order of magnitude [35] compared to the Hall measurement result [n3D = 3.5 à ¯Ã¢â‚¬Å¡Ã‚ ´ 101 8cm-3], which is obtained from the fit to low field B ( ±1T) data (Figure 4.5 (b)). Figure 4.5 (c) shows the LL fan diagram plotted in 1/B versus nth oscillation minima in à ¯Ã†â€™Ã‚ ³Rxx. The linear fit of the two-set SdH spectrum yields the intercepts of à ¯Ã‚ Ã‚ § = 0.48  ± 0.3 for Surface 1 and 0.49  ± 0.02 for Surface 2, where à ¯Ã‚ Ã‚ § values are closer to the theoretical value of 0.5 for ideal Dirac fermions. It is assumed that Surface 2 is the top surface because environmental contamination provides effective n-type doping [17] to the sample, which strongly influences the top surface. The specimens were closely stacked on the substrate to prevent the bottom surface from air contamination and electron-beam irradiation. Thus, the second set of SdH oscillations appears in the lower inversed field, shown in Figure 4.5 (a), which was probably from the top surface. In Figure 4.5 (c), the slope of one set of SdH oscillations provides the cross-section area of the Fermi surface [AF = 4.15 Ãâ€" 1017 m-2], and the Fermi wave number was = 0.0363 and the 2D surface carrier density was = 1.05 Ãâ€" 1012 cm-2 for the top surface (Surface 2). The second set of SdH oscillations resulted in AF = 2.32 Ãâ€" 1017 m-2 and = 0.02718 , and 0.58 Ãâ€" 1012 cm-2 for the bottom surface (Surface 1). Figure 4.5 (d) shows the fit of temperature dependence of SdH amplitudes to the Lifshitz-Kosevich (LK) theory [11, 43].The cyclotron mass mc = 0.075 me is the same as that reported [13]. Once mc is known, we can calculate the Fermi velocity and the Fermi level position to be vF = 5.6 Ãâ€" 105 m/s and EF = 134 meV above the Dirac point for the top surface and vF = 4.19 Ãâ€" 105 m/s and EF = 75 meV for the bottom surface. The high Fermi level position of the top surface is consistent with the results of environmental doping mentioned previously. Due to the multiple component nature, the Dingle temperature is difficult to extrapolate from the SdH amplitude; therefore, Eq. 4.2 is used to fit the resistance data to the LK theory , (4.2) where F is the frequency of SdH oscillations extracted from the slopes of Figure 4.5 (c), the thermal factor is , and the Dingle temperature is [11, 43]. The solid red line in Figure 4.5 (e) shows the optimal fitted results of à ¯Ã‚ Ã‚ § = 0.5 and à ¯Ã‚ Ã‚ ´ = 1.11 Ãâ€" 10-13 s for the top surface, and à ¯Ã‚ Ã‚ § = 0.35 and à ¯Ã‚ Ã‚ ´ = 1.56 Ãâ€" 10-13 s for the bottom surface. The fitted à ¯Ã‚ Ã‚ § values are close to theoretical value of 0.5 for ideal Dirac fermions. According to the Dingle analysis, the scattering time is approximately two to three times larger than that of the bulk BSTS [13]. Mobility is a measure of scattering time; therefore, it is possible to calculate the surface mobility ÃŽ ¼s = 2602 cm2V-1s-1 and the mean free path = 62 nm for the top surface, and ÃŽ ¼s = 3657 cm2V-1s-1 and = 65 nm for the bottom surface. The surface mobility enhancement is consistent with the longer mean free path of the nontrivial topological Dirac state. The surface contribution to the total conductance (Gs/Gtot = 84.8%) was consistent with the results obtained from the thickness dependence of conductance. Take the sheet carrier density into account, n = ns + nb t [44]. The mobility of the bulk channel was 12 cm2/Vs, which is close to the total Hall mobility of the 140-ÃŽ ¼m thick BSTS specimen, 13 cm2/Vs. The low Hall mobility of bulk carriers causes less interference with the surface Dirac fermions; thus, the enhancement of the surface contribution and quantum oscillations was detected in the specimens used in this study. Figure 4.5. (a) Temperature dependence of resistance. à ¯Ã†â€™Ã‚ ³Rxx is function of 1/B. n = 4, 5, and 6 are the LLs of the bottom surface; n = 6, 7, 8, and 9 are the LLs of the top surface of the 200-nm nanoflake. (b) Hall resistance versus magnetic field. The red dashed line is extended from the low B ( ±1T) fit. The inset shows the Fermi level positions of the top and bottom surfaces, respectively. BV is the bulk valance band, and BC is the conduction band. (c) The LL fan diagram plotted in 1/B versus the nth oscillation minima in the à ¯Ã†â€™Ã‚ ³Rxx. (d) The fit of temperature dependence of the SdH oscillation amplitude to the LK theory. (e) à ¯Ã†â€™Ã‚ ³R versus 1/B. The black curve is the experimental data, and the red curve is the fit to LK theory. 4.3.4 Weak anti-localization effect In addition to SdH oscillations, the helical surface state was further probed using the WAL effect on the 200-nm BSTS. The WAL effect in TIs originated from the  ° Berry phase, in which the probability of backscattering was suppressed as a result of the destructive interference of time-reversed paths. The angle field dependence magnetoconductance analysis is shown in Figure 4.6 (a). The sharp cusps of the magnetoconductance in the lower field region are features of WAL. The 2D nature of Dirac fermions associated with the  ° Berry phase, which is dependent only on the perpendicular component of the applying field, was obtained by subtracting the background from the 3D bulk WAL contribution, ΔGxx(ÃŽ ¸,B) = Gxx(ÃŽ ¸,B) Gxx(90 °,B) (5), as shown in Figure 4.6 (b). Figure 4.6 (b) shows that low-angle data merge into a single universal curve [15]. The Hikami-Larkin-Nagaoka (HLN) [15] model is used to calculate sheet conductance [27], as given in Eq. (3): , (4.3) where Gxx is sheet conductance, is the phase coherent length, and is the digamma function. The value for à ¯Ã‚ Ã‚ ¡ (-0.96) and (121 nm) were obtained for the 200-nm nanoflake. For the WAL effect in TIs, the prefactor à ¯Ã‚ Ã‚ ¡ was equal to -0.5 for a single surface state [40]. The complicacies of topological surface states resulted in an experimental value à ¯Ã‚ Ã‚ ¡ between -0.4 to -1.5 [38, 40]. In this study, the value à ¯Ã‚ Ã‚ ¡ = -0.96 indicated the existence of two surface states. Figure 4.6. (a) The angle field dependence magnetoconductance of the 200-nm nanoflake. The inset is a schematic diagram of the measurement. (b) ΔGxx versus the perpendicular field component (B cos ÃŽ ¸) for various angles. Low-angle data merge into a single curve (the green dashed line) fitted using the HLN model. 4.4 Conclusion In this study, dominated surface transport was observed in BSTS nanoflakes. The thickness dependence electrical transport and the SdH oscillations illustrated that the surface states in the 200-nm BSTS nanoflake contribute to nearly 90 % of the conductance. The achievement of the surface-dominated transport is mainly attributed to the high surface mobility relative to the bulk channel. The observation of SdH oscillations provides clear evidence of surface Dirac fermions. Surface-dominated transport was further confirmed by the WAL effect showing 2D nature of helical Dirac surface states. Moreover, electrical transport transforms from semiconducting to metallic behavior, and mobility was enhanced when the thickness decreased, indicating that surface states plays a crucial role in the thin film limit. The high-insulating bulk state in BSTS nanoflakes provides opportunities for future quantum computation and spintronics applications.

Odysseus is an Epic Hero :: essays research papers

People are heroes in different ways for different reasons. American soldiers are heroes because they fight boldly for their country. Corrie Ten Boom is also a hero because she took risks and saved hundreds of Jews. Abraham Lincoln is another example of a hero because he fought for what he thought was right and helped free all slaves. Similarly, Odysseus, the main character in Homer’s epic poem The Odyssey, possesses all of these characteristics and many more, making him a true epic hero. First of all, Odysseus is brave and courageous, giving him the initiative to fulfill his goals. One example is when Odysseus confronts Skylla. Odysseus purposely â€Å"made [his] way along to the foredeck—thinking to see her first from there† (Homer 217). If he was scared, he would have hidden underneath the deck. But instead, Odysseus goes out to face the beast. Odysseus knows that Skylla is immortal and cannot die, yet he is brave enough to confront her. Next, Odysseus fights the suitors, who are courting Penelope in his palace. The suitors greatly outnumber Odysseus, but Odysseus still chooses to fight even though the odds are against him and he is able to win. He stands up against those who do wrong. Having the courage to fight, Odysseus defeats the suitors and fulfills his goal of regaining his palace. If Odysseus was a coward and did not fight, then the suitors would have eventually won Penelope, resulting in Odysseus losing his palace and his wife. Ma ny people have bravery and courage, but not many use it, as Odysseus does, to achieve their purpose. Secondly, Odysseus has great self-control, which allows him to deeply contemplate his decisions. Moments before Odysseus falls asleep, he spots a â€Å"covey of women laughing as they [slip] out†¦to the suitors’ beds† (Homer 375). Seeing this, Odysseus is angered and wants to kill every one of the suitors right then and there. But Odysseus retains his self-control and does not strike yet. At that moment, if he did strike, he would have lost because he would not have been prepared. He retains all his anger for the final battle with the suitors. In that battle, Odysseus is fully prepared and ready to fight, resulting in all the suitors’ deaths. Next, when Antinoos throws a footstool at Odysseus, â€Å"Odysseus only [shakes] his head, containing thoughts of bloody work† (Homer 326).

Early Childhood Education Field Essay -- Education, teaching, elementa

Introduction Due to an increased demannd for standards and accountability in the early childhood education field, policy makers have increasingly turned to the development of effective professional practice among early childhood educators (ECEs) as the predominant approach in securing better outcomes for children. ECEs have thus found themselves under increased pressure to develop professional practices through professional development which has been demonstrated to have a profound impact on children’s holistic development and their performance prospects in society. This essay will focus on the development of effective professional practice among ECEs. The paper will critically evaluate the importance of developing professional practice among ECEs, how it is developed and the application in ECE’s practice. The essay will highlight how professional practice and core beliefs of ECEs are shaped by factors such as professional and personal identity, beliefs and values and regulatory d ocuments and bodies. Development of Professional Practice The importance attached to the development of effective professional practice among ECEs can be seen in the Professional Support Coordinators Alliance of South Australia (PSCSA’s) definition of professional development. The PSCSA defines professional development as â€Å"continuous learning that enables practitioners to affirm existing understandings as well as acquire new skills and knowledge and thereby remain up-to-date with evolving developments in the field (PSCSA, 2008, p17).† The report also considers the development of professional practice among ECEs as any endeavor to improve service delivery to the families and the children that they are contracted to provide the service for. This def... ...n The development of effective self practice among early childhood educators has become an increasingly important aspect of quality management and improved service delivery in the ECE sector. The significance of professional development for ECEs is that it enhances the acquisition of professional knowledge, skills, and dispositions as well as the application of this knowledge in professional practice. Professional development is mainly through continuous learning and training and is dependent on the educator’s core personal and professional values and beliefs. These beliefs are shaped by publications of regulatory and professional bodies and through constant self reflection and evaluation. This then enables ECEs work on their beliefs that shape their professional practice as regards mode of teaching and also professional relationships with family and community.

The Mission Movie Analysis

The movie The Mission (1986) staring Robert DiNiero, is set during the colonial time period and sheds light on the Jesuits and their early missions in Brazil. It shows us a timeline of the behaviors of countries such as Spain and Portugal as well as the Jesuit missions. The movie opens with a focus on an Indian village set on the top of a waterfall. This village is depicted from two separate viewpoints, as the viewer is shown a Jesuit Priest named Father Gabriel (Jeremy Irons) in the beginning steps of attempting to submerge into the Indian culture in hope to eventually convert them to the Jesuit faith.On the opposite end of the spectrum, men from Spain are shown entering a similar village, capturing as many Indians as possible and bringing them back to Spain to sell to others who will turn them into slaves. Each side continues these behaviors throughout the majority of the movie. Over time, you can see the growth of the relationship between the Jesuit Priests and the Indian villages . In addition to providing them with religion, parts of the Jesuits’ successes were achieved in bringing over new world practices to what one would otherwise describe as an uncivilized population.The implementation of simple things such as teaching the Indians how to build soundly structured buildings, laid the foundation of trust needed to have the Indians convert to the Jesuit faith and eventually build a large church in the center of the village. The Jesuits missions have been very successful thus far. However, political negations between Spain and Portugal deviate and the two countries form a treaty outlining an agreement for Spain to concede land to Portugal, which they will use to build their own civilizations and enslave or kill local Indian tribes as well as anyone who stands in their way.A trail is held to determine if the Spain and Portugal have to authority to destroy the sacred work of the Jesuit missions. The judge takes time to explore all the villages that the Jesuits have converted including their oldest mission known as The Great Mission of Sab Miguel. The judge is treated like royalty at every stop he makes in trying to decide but ultimately decides that the villages can be destroyed to make way for the effectiveness of the Spanish and Portuguese treaty.This is met with obvious resistance from the Indians who are overcome with feeling of betrayal from not only their God but also these foreign settlers that they let into their lives. When the Portuguese show up, the Indians are prepared for war but in the end, wooden spears are not a fair fight for guns and swords. The Indians’ villages are torched and those who were not killed were shackled, enslaved, transported back and sold. I feel that as far as movies go, this one did a very good job when is came to historical accuracies.The film makes it seem that the Indians would not have been able to survive without the help of the Jesuits and the mission, which simply is not true. The film also fails to point out the lack of freedom that the Indians had within these missions. In fact, the film at times portrays the exact opposite. Lastly, the film paints the Jesuits as innocent and the good guys throughout the film. I feel this is the most egregious inaccuracy. The Jesuits were not simply there to spread Christianity to people, but rather it was a beginning step in taking over the entire culture and land of the Indian people.I thought the movie was definitely effective. I felt that the film itself was well depicted and gave the viewer a clear understanding of not only the struggle in the area but also the political ripples it caused as it ultimately eluded to the global effect this situation had. I was pleased that things were not disproportionally exaggerated, as is the case all too often in movies; conversely, Roland Joffe does a commendable job of bringing life the words of a history textbook without compromising it’s integrity with the help of Robert D e Niro and Jeremy Irons.

Flourishing of Indian Culture in Gupta Empire Essay

The era of Gupta Empire, which lasted for two centuries on the territories of modern northern India, can be named as a period of economic, cultural and social rise of Indian community. Leadership of the Emperors of Gupta Dynasty was very successful, and there were peace, order and social harmony set up at Gupta territories. Such circumstances favored the development and flourishing of culture and intellectual science in Gupta Empire. Wall-paintings of Ajanta Caves in Deccan demonstrate high level of artistic skills, creativity and imagination of Gupta painters. The main themes of those paintings are religious motifs and daily life of Gupta people. Also, there are magnificent sculptures and powerful statues, which mostly image different Buddhist gods and are still in good state of preservation. Architectural monuments of those times are mostly Hindu temples with towers. This period can be characterized by combining of traditional forms with new aspects in all branches of Indian art. Popularization of Sanskrit language brought to considerable rise in literature. Outstanding Gupta poets Kalidasa, Dandi, Shudaka contributed to Indian literature their poetry, comedies and dramas, in which they used to address to lyrical, religious, epic, narrative and erotic motives. In those times a great number of books and researches were written, both literary and scientific, including famous Kamasutra, the work about the art of physical love. During the Gupta Age a lot of achievements took place in such disciplines, like mathematic, logic, astronomy, medicine, veterinary, and others. For example, a new Gupta numerical system was developed from the Brahmi numerals, which later on influenced Roman decimal system. Gupta astronomers could calculate the duration of the solar year, and Gupta doctors could do a type of operation, which is known now as Caesarian section. Unfortunately, the Gupta Era and its cultural progress did not last long. The main reason of this can be the fall of the Empire as a result of invasions of the White Huns from the South and the West. This caused the split up of the Empire and assimilation of Gupta people into other Asian nations. Nevertheless, a lot of cultural memorials and intellectual achievements could survive and contribute into further development of Indian community and the whole humanity. Bibliography: †¢ Gupta Empire. (2006, February). Wikipedia. The Free Encyclopedia Online. Retrieved March 20, 2006, from: . †¢ Gupta Empire in India. (1995, September). Indian Child. A Parent’s Guide to Internet Safety. Retrieved March 20, 2006, from: . †¢ Hooker, R. (1999, July 6). World Civilizations: The Age of Guptas and After. Washington State University. Board of Regents. Retrieved March 20, 2006, from . †¢ The Gupta Age. (n. d. ). Today’s India. Embassy of India in Havana. Retrieved March 20, 2006, from: .

Treetop Forest Products Ltd

Marketing: In business, firm marketing generates the revenues that the financial people manage and the production people use in creating goods and services. The challenge that faces marketing is to generate those revenues by satisfying customers’ wants at a profit and in a socially responsible manner. However, marketing is not limited to business organizations.Whenever we try to persuade somebody to do something: donate to RED CROSS, not to litter the highways, save energy, vote for candidate, we are engaging in marketing; thus marketing has a broad societal meaning and it is applicable not only for profit making but also for not profit organizations. Many scholars define marketing as follows: 1. According to American Marketing Association, marketing is defined as the performance of business activities that direct the flow of goods and services from producers to consumers or users. . According to William J. Stanton, Marketing is a system of business activities designed to plan , price, promote and distribute want satisfying goods and services to present and potential customers. 3. According to Evans and Berman, Marketing is the anticipation, stimulation, facilitation, regulation and satisfaction of consumer and public’s demand for products, services, organizations, people, places, and ideas through the exchange process. 4.According to Philip Kotler, Marketing is a social and managerial process by which individuals and groups obtain what they need and want through creating and exchanging products and value with others. Generally, the definition of marketing can be grouped in to two: classical (narrow) definition and modern (broad) definition. Classical Definition: In classical terms marketing can be defined as the performance of business activities that direct the flow of goods and services from producers to consumers. This definition is too narrow to describe marketing.It emphasizes the distribution aspect of marketing. Modern Definition: In broade r terms marketing is defined as a system of business activities designed to plan, price, distribute and promote want satisfying products (goods and services) to present and potential customers. In marketing, there are combinations of activities, which start before the creation of a product and don’t end until customers are satisfied. Therefore, product planning, pricing, distribution and promotion are the main activities performed in marketing.Marketing includes anticipating demand, which requires a firm to do customer research on a regular bases so that it develops and introduces products that are desired by consumers, Management of demand which consists of stimulation, facilitation, and regulation of tasks; and satisfaction of demand which involves actual performance, safety, availability of options, after sale service and other factors. From the above discussions, we can conclude the following about marketing: a. Marketing is the business activity concerned with the flow o f goods and services from producers to consumers. . Marketing generates and facilitates exchange c. The concept of marketing lies on needs, wants, and demands of customers. d. Marketing is greater than selling. e. Marketing is an integrated activity. f. Marketing is concerned with customer satisfaction. MARKETING FUNCTIONS The following are the basic marketing functions: 1. Environmental Analysis and Marketing Research: Involves monitoring and adapting to external factors that affect success or failures, such as the economy and competition; and collecting data to resolve specific marketing issues. 2. Consumer Analysis:Involves examining and evaluating customer characteristics, needs, and purchase processes and selecting the group of consumers at which to aim marketing efforts. 3. Product Planning: ( including goods, services and ideas) Involves developing and maintaining products, product assortments, product images, brands, and packaging, and optional features; and deleting falteri ng products. 4. Distribution Planning: Involves establishing relations with distribution-channel intermediaries, physical distribution, inventory management, warehousing, transportation, the allocation of goods and services, wholesaling and retailing 5.Promotion Planning: Involves communicating with customers, the general public and others through some form of advertising, publicity, personal selling, and/or sales promotion. 6. Price Planning: Involves determining price levels and ranges, price techniques, terms of purchase, price adjustments, and the use of price as an active or passive factor. 7. Broadening the organizations' /individuals' scope: Involves deciding on the emphasis to place, as well as the approach to take, on international marketing, service/ -non-profit marketing and societal issues. 8. Marketing Management:Involves planning, implementation, and controlling the marketing program (strategy) and individual marketing functions; and appraising the risks and benefits i n decision making. According to W. J. Stanton and McKarthy, there are eight economic activities in marketing that are broadly classified into three: 1. Exchange: -Buying -Selling 2. Physical Distribution – Transportation – Storage 3. Facilitating /Auxiliary/ – Financing – Marketing research and information – Risk bearing – Product standardization 1) Exchange: It is the process by which parties provide something of value to one another to satisfy the needs of each.The seller provides a needed product Goods Services Seller Buyer Money Credit The buyer offers something in return a) Buying: It is acquisition and procurement of goods for eventual resale or for production of other goods or rendering of services. b) Selling: It is not only just to make sales but also to find buyers, stimulate them, and provide advice and service to buyers. It involves advertisement, personal selling, customer service, publicity, etc. 2) Physical Distribution: Refer s to handling and movement of goods from production area to market center.It consists of a) Storage: It provides proper handling and storage of goods until they are demanded and sold. b) Transportation: It is the shipment and movement of goods from their manufacturing place to the market center /place of sale/. It enables to make goods reachable to the consumers. 3) Facilitating Function /Auxiliary Function: these are functions that facilitate and assist the proper performance of other functions of marketing. It encompasses a) Financing: To carry out business operations smoothly, it requires finance or money. Marketing as a major business activity, leads us to the need for money or finance.Without it, organizations are unable to schedule their operations. The activity of financing involves the proper handling and management of the inflow and outflow of money. Accordingly, finance is defined as the management function, which involves effectively obtaining and using money. Sources of finance include revenue from sale of company products and services, rental of business properties, from sale of stock, or from loan and credit agencies. b) Market Research and information: Managers of businesses do not make decisions on the basis of common sense or intuition. They require information.Therefore, to make marketing decisions and to design effective marketing policies, managers should get information regarding tests, preferences, attitudes and needs of customers; position of competitors, capacity of suppliers and creditors. For the success of business, market research is an important activity that involves gathering, analyzing, and interpretation of data collected regarding the needs of consumers. c) Risk Bearing: Business organizations when they are established, it is with the objective of getting profit, expansion, growth, etc. Nevertheless, they fail to achieve their objectives because of uncertainty of the future.Hence, the chance or the possibility of loss that bus iness face is known as RISK. d) Product standardization and Grading: These are facilitating functions that are used to identify the quantity and quality of production. When goods are standardized and graded neither the buyer nor the seller is required to check each and every part of the product. It saves the time of both buyers & sellers. Standardization enables customers to know that there is always definite or standard quality in a particular package; and grading indicates that a package labeled with grades A, B, or C are always uniform and the same everywhere and ever time.The field of marketing is a crucial one for several reasons: it stimulates demand; a large number of people are employed on marketing positions; it supports entire industries such as advertising and marketing research; all people are consumers in some situations; it is necessary to use scarce resources efficiently; it impacts on people's beliefs and life styles; and it influences the quality of our lives. The s cope of marketing is quite broad and diversified. To perform the marketing functions, marketing Performers are required and they are organizations or individuals that undertake one or more marketing functions.They include manufacturers, service providers, wholesalers, retailers, marketing specialists, and organizational and final consumers. Each performer has a different role. One party usually does not perform all the functions. This is due to costs, assortment requirements, specialized abilities, company size, established methods of distribution, and consumer interests. TASKS OF MARKETING MANAGEMENT Marketing managers in different organizations might face any of the following states of demand. The marketing task is to manage demand effectively. The various states of demand and the corresponding marketing management task according to P.Kotler are the following: 1. Negative demand: This is a state in which all or the major parts of the society, dislikes the product and may even pay a price to avoid it. Examples are vaccination, alcoholic employees, dental work, and seat belts. The corresponding marketing task is to analyze why the market dislikes the product and whether product redesign, lower price, or more positive promotion can change the consumer attitudes. This marketing task or activity is known as CONVERSIONAL marketing which tries to change people’s want rather than serve their wants. . No demand: This is a case where target customers may be uninterested in or indifferent to a particular product. For example, farmers may not know about a new farming method; college students may not be interested in taking foreign language courses. Marketing managers are concerned with finding ways to connect the product’s benefits with the user’s needs and interests. This marketing task is known as STIMULATIONAL marketing; it tries to stimulate a want for an object in people who initially have no knowledge or interest in the product 3.Latent demand : Consumers have a want that is not satisfied by any existing product or service. This state of demand where many customers share a strong need for something that does not exist in the form of actual product is called LATENT demand. Examples include the need for harmless cigarettes, more fuel-efficient cars, etc. In this case, marketing managers respond by trying and developing effective goods and services that will satisfy the demand through analysis and measurement of the potential market.The marketing task is called DEVELOPMENTAL marketing and its task is to measure the size of the potential market and trying to develop a new product or service that would satisfy the demand. 4. Falling demand: Sooner or later, every organization faces falling demand for one or more of its products. For example, churches have seen their membership decline, and private colleges have seen fewer applications. The marketer must find the causes of market decline and re-stimulate demand by finding new m arkets, changing product features, or creating more effective communication and the marketing task is REMARKETING. . Irregular demand: It is a state in which the timing pattern of demand is marked by seasonal and volatile fluctuations causing problems of idle capacity and overworked. For example museums are under-visited during weekdays and overworked during weekends. The corresponding marketing task is SYNCHROMARKETING, i. e. , to find ways to alter the time pattern of demand through flexible pricing, promotion and other incentives so that it will better match the time pattern of supply. 6. Full demand: The organization has just the amount of demand it wants and can handle.It is a state where the current level and timing of demand is equal to the desired level and timing of demand. The marketing task is MAINTENANCE marketing and is designed to maintain the current level of demand against changing consumer preferences. The organization maintains quality, and continually measures sat isfaction to make sure it is doing a good job. 7. Overfull demand: It is a state in which demand is higher than the company can or wants to handle. The marketing task is called DEMARKETING and its task is finding ways to reduce the demand temporarily, or permanently.De-marketing involves such actions as raising prices and reducing promotion and service. It does not aim to destroy demand, but only to reduce it. It calls for using normal marketing tools in reverse. 8. Unwhole-Some demand: Unwholesome products such as cigarettes, alcohol, and hard drugs will attract organized effort to destroy the demand or interest in particular product or service. The corresponding marketing task is known as COUNTERMARKETING it is a difficult task in that the aim is to get people who like something to give it up. Marketing manager cope with these tasks by arrying out marketing research, planning, implementation and control. The demand levels and corresponding marketing tasks are summarized as follows : State of demand| Marketing task| Formal Name| 1. | Negative demand| Disabuse demand| Conversional marketing| 2. | No demand| Create demand| Stimulation Marketing| 3. | Latent demand| Develop demand| Developmental marketing| 4. | Falling demand| Revitalized demand| Remarketing marketing| 5. | Irregular demand| Synchronize demand| Synchro-marketing| 6. | Full demand| Maintain| Maintenance marketing| 7. Overfull demand| Reduce demand| Demarketing marketing| 8. | Unwholesome demand| Destroy demand| Counter marketing| 2. 3. MARKETING MANAGEMENT CONCEPTS We have described marketing management, as the conscious effort to achieve desired exchange outcomes with target markets. Now we ask what philosophy should guide these marketing efforts? What weights should be given to the interests of the organization, the customers and society? Very often these interests conflict. Clearly, marketing activities should be carried out under a clear philosophy of efficient, effective, and responsible mark eting.There are five competing concepts under which organizations conduct their marketing activity. 1. The production concept: This concept holds that consumers will favor those products that are widely available and low in cost. Management of production oriented organization concentrates on achieving high production efficiently and wide distribution coverage. Organizations that appreciate this concept assume that consumers like products that are widely available and accessible at low cost. The production concept is one of the oldest concepts guiding sellers.The assumption that consumers are primarily interested in product availability and low price holds in at least two types of situations. The first is where the demand for a product exceeds supply as in many Third World countries. Here consumers are more interested in obtaining the product than in its fine points. The suppliers will concentrate on finding ways to increase production. The second situation is where the productâ€⠄¢s cost is high and has to be brought down through increased productivity to expand the market.Texas instruments provides a contemporary example of the production concept: Texas Instruments is the leading American exponent of the â€Å"get-out production, cut the price† philosophy. Ford put all of his talent into perfecting the mass production of automobile to be down their instruments all of its efforts in building production volume and improving technology in order to bring down costs. It uses its lower costs to cut process and expand the market size. It strives to achieve the dominant position in its markets.To Texas Instruments, marketing primarily means one thing bringing down the price to buyers; this orientation has also been a key strategy of many Japanese companies. 2. The product concept: Under this concept, marketing managers assume that consumers will prefer those products that offer (provide) the most quality, performance, with good features. Managers in this pr oduct-oriented organizations focus their energy on making quality products and improving them over time. These managers assume that buyers admire well-made products and can select, purchase and appreciate product quality.Products oriented companies often design their product with little or no customer input. These managers are caught up in a love affair with their product and fail to appreciate that the market may be less â€Å"turned on. † They trust that their engineers will know how to design or improve the product. Too often they will not even examine competitors products because â€Å"they were not invented here. † A General Motors executive said years ago† â€Å"How can the public know what kind of car they want until they see what is available? † GM’s designers would develop plant for a new car. Then manufacturing would make it.Then the finance department would price it. Finally, marketing and sales would try to sell it. GM failed to ask cust omers what they wanted and never brought in the marketing people at the beginning to help figure out what kind of car would sell. The product concept leads to â€Å"marketing myopia† a focus on the product greater than on the customer’s need. Railroad management thought that users wanted trains rather than transportation and overlooked the growing challenge of the airlines, buses, trucks, and automobiles. Churches and the post office all assume that they are offering the public the right product and wonder why their sales falter.These organizations too often are looking into a mirror when they should be looking out the window. 3. The Selling concept: Under this philosophy/concept/, marketing managers assume that consumers purchase products if the organization undertakes an aggressive selling and promotion effort. Therefore, firms emphasize and direct their effort on promotion and selling of their products. Most firms practice the selling concept when they introduce new products and when they have over capacity. The selling concept holds that consumers, if left alone, will ordinarily not buy enough of the organization’s products.The organization must therefore undertake an aggressive selling effort. The concept assumes that consumers typically show buying inertia or resistance and have to be coaxed into buying, and that the company has available a whole battery of effective selling and promotion tools to stimulate more buying. The selling concept is practiced most aggressively with â€Å"unsought goods,† those goods that buyers normally do not think of buying such as insurance, encyclopedias, and funeral plots. These industries have perfected various sales techniques to locate prospects and hard sell them on product benefits.Most firms practice the selling concept when they have over capacity. Their aim is to sell what they make rather than make what the market wants. In modern industrial economies, productive capacity has been built up to a point where most markets are buyer markets (i. e. , the buyers are dominant), and sellers have to scramble hard for customers. Prospects are bombarded with television commercials, newspaper ads, direct mail, and sales calls. At every turn, someone is trying to sell something. As a result, the public identifies marketing with hard selling and advertising. 4.The Marketing Concept: The marketing concept is different from the above three concepts. Managers under this concept assumes that the key to achieving organizational goals is based on the determination of the needs and wants of consumers and delivering or providing the desired satisfaction more efficiently, and effectively, than competitors. When we compare the marketing concept with the selling concept, the selling concept focuses on the needs of the seller; the marketing concept focuses on the needs of the buyer. Selling concept focuses on the needs of the seller; marketing on the needs of the buyer.Selling is preoccupi ed with the seller’s need to convert his product into cash. Marketing is preoccupied with the idea of satisfying the customers’ needs of the product and the whole cluster of things associated by creating and delivering the product. The marketing concept rests on four main pillars, namely target market, customer needs, coordinated marketing, and profitability. These are shown in figure below – The selling concept Starting pointFocusMeans Ends FactoryProductsSelling ; Profits throughpromotion sales volume The marketing concept Starting point focus meansEndsTarget market Customer CoordinatedProfits through Needs marketingCustomer Satisfaction Here we examine how each pillar of the marketing concept contributes to more marketing that is effective. i. TARGET MARKET: No company can operate in every market and satisfy every need. Nor can it even do a good job within one broad market. Companies do best when define their target market (s) carefully and prepare a tailored marketing program. An auto manufacture can think of designing passenger cars, station wagons, sports carts, and luxury. But this thinking is less precise than defining a customer target group.One Japanese carmaker is designing a car for the career woman, and it will have many features that male-dominated cars don’t have. Another Japanese carmaker is designing a car for the â€Å" town man,† the young person who needs to get about town and park easily. In each, the company has clarified a target market, and this will greatly influence the car design. Societal Marketing Concept: It holds that the organization should determine the needs, wants, and interests of the target markets and deliver the desired satisfaction more effectively and efficiently than competitors in a way that maintains or improves the customer’s and the ociety’s well-being. The societal marketing concept calls upon marketers to balance three considerations in setting their marketing poli cies. Originally, companies based their marketing decisions largely on short-run company profit. Overtime, companies began to recognize the long-run importance of satisfying consumer wants, and introduced the marketing concept. Now they are beginning to think of society’s interests when making decisions. The societal marketing concept calls for balancing all three considerations-company profits, consumer wants, and society’s interests.