What History Is To A Nation, Memory Is To The Individual. Both Serve T

What history is to a nation, memory is to the individual. Both serve to locate us, to tell us who we are by reminding us of what we have been and done. And both, as Kazuo Ishiguro suggests, are open to selection, repression and revision. The Remains of the Day, Ishiguro's third novel, examines the intersections of individual memory and national history through the mind of Stevens, a model English butler who believes that he has served humanity by devoting his life to the service of a great man, Lord Darlington. The time is 1956; Darlington has died, and Darlington Hall has been let by an American businessman. As Stevens begins a solitary motor trip to the west country, traveling farther and farther from familiar surroundings, he also embarks on a harrowing journey through his own memory. What he discovers there causes him to question not only Lord Darlington's greatness, but also the meaning of his own insular life. The journey motif is a deceptively simple structural device; the far ther Stevens travels from Darlington Hall, it seems, the closer he comes to understanding his life there. But in Stevens's travel journal Ishiguro shapes an ironic, elliptical narrative that reveals far more to the reader than it does to Stevens. The butler believes, for instance, that he makes his trip for professional reasons, to persuade a former housekeeper, Miss Kenton, to return to Darlington Hall. But through deftly managed flashbacks and Stevens's naive admissions, the reader sees instead that the matter is highly personal: Stevens had loved Miss Kenton but let her marry another man; he now wishes to make up for lost time, to correct the mistakes of his past. More important than that veiled love story--but intimately connected with it--is the matter of Lord Darlington, and the degree to which Stevens's sense of self is founded upon his belief in Darlington's greatness. It becomes clear enough to the reader, though Stevens is long in admitting it to himself, that Darlington h ad been a political pawn of fascism and the Nazis--unwitting perhaps, misguided no doubt, but hardly the great man that Stevens had deceived himself into believing he served. These revelations are made through a delicate and powerful process: as Stevens's journal shifts between travelogue, personal memoir and reflections on his profession, his memory slides continually between Darlington Hall in the ruined, empty present, the height of Darlington's influence (and Stevens's pride) in the 1920s, and the tense, disturbing pre-war 1930s. Carefully elided from consideration, repressed and hidden, are the war years themselves and their immediate aftermath. We know they are there, of course, and we may guess what they meant at Darlington Hall, but Stevens's memorial archaeology leaves that particular tomb unexcavated. In the end, Stevens must come to some sense of resignation and resolution, both about Darlington and about himself. The source of Stevens's pride is also, after all, potentia lly the source of his shame. He was willing enough to shine in the light of Darlington's greatness, and now must either share in his disgrace, or--what is perhaps more difficult--admit that his own dedicated and deeply considered professionalism has had no real part to play on the stage of world history. Like all great novels, The Remains of the Day is an organic work, its parts perfectly integrated, every scene imaging the whole. In his carefully controlled prose, so perfectly suited to his narrator, in his effortless movement among several different time settings, in his almost magical evocation of simultaneous humor and pathos, Ishiguro proves himself a masterful artist in full command of his elements. And in this novel, those elements combine to form a profound psychological and cultural portrait that reveals the author's great abiding theme: the art and artifice of memory

Leading a Book Club Discussion Session

Leading a Book Club Discussion Session Whether you are an outgoing extrovert or the shy one in the group, you can lead your book club in an engaging discussion by following these few simple steps. What to Do Before the Meeting Read the book.  This may seem obvious, but it is the most important step, so it is worth stating. It is a good idea to plan on finishing the book a little earlier than you might otherwise so that you have time to think about it and prepare before your book club meets. If you get to pick the book, here are some recommendations for engaging books  that are likely to promote discussion. Write down important page numbers (or bookmark in your e-reader).  If there are parts of the book that made an impact on you or that you think may come up in the discussion, write down the page numbers so that you can access the passages easily while preparing and leading your book club discussion. Come up with eight to ten questions about the book.  There are some general book club discussion questions that should work on most books, especially popular selections and bestsellers. Print them out and you are ready to host. You can also come up with your own questions using the tips below as a guide. What to Do During the Meeting Let others answer first.  When you are asking questions, you want to facilitate discussion, not come off as a teacher. By letting others in the book club answer first, you will promote conversation and help everyone feel like their opinions matter. Its important to note that sometimes people may need to think before they answer. Part of being a good leader is being comfortable with silence. Dont feel like you have to jump in if no one answers immediately. If needed, clarify, expand or rephrase the question. Make connections between comments.  If someone gives an answer to question 2 that connects well with question 5, dont feel obligated to ask questions 3 and 4 before moving to 5. You are the leader and you can go in whatever order you want. Even if you go in order, try to find a link between an answer and the next question. By connecting peoples comments to the questions, youll help build momentum in the conversation. Occasionally direct questions toward quiet people.  You dont want to put anyone on the spot, but you want everyone to know their opinions are valued. If you have a few talkative people who always jump right in, directing a question to a specific person may help draw out the quieter people (and give the more animated people a hint that its time to give someone else a turn). Rein in tangents.  Book clubs are popular not only because people like to read, but also because they are great social outlets. A little off topic conversation is fine, but you also want to respect the fact that people have read the book and expect to talk about it. As the facilitator, it is your job to recognize tangents and bring the discussion back to the book. Dont feel obligated to get through all the questions.  The best questions sometimes lead to intense conversations. Thats a good thing! The questions are there simply as a guide. While you will want to get through at least three or four questions, it will be rare that you finish all ten. Respect peoples time by wrapping up the discussion when the meeting time is over rather than pushing on until you finish everything you planned. Wrap up the discussion.  One good way to wrap up a conversation and help people summarize their opinions of the book is to ask each person to rate the book on a scale of one to five. General Tips When writing your own book club discussion questions, avoid questions that are too general, like What did you think of the book? Also, avoid questions that have simple yes or no answers. You want to ask questions that are open-ended and help people talk about themes and how the book relates to deeper issues.Do not make dismissive statements toward other peoples comments. Even if you disagree, take the conversation back to the book rather than saying Thats ridiculous, etc. Making people feel embarrassed or defensive is a sure way to shut down the conversation.

How do you grade creativity in the classroom Essay

How do you grade creativity in the classroom - Essay Example In a classroom it is possible that creativity level in the student, who is achieving high grades, is at low level and creativity level in a student who is performing not well and achieving low grades, is at high level. In this kind situation, it is now own teacher that how he will assess the creativity level of any student. Short Introduction of Toolmin model: Stephen Edelston Toulmin who was a British philosopher presented a model for presenting the arguments in well prepared form. He stated that for the success of any good argument it is necessary to provide good presentation and justifications about argument. He expressed his philosophy in six different ways those are correlated to each other. According to Toulmin there are three necessary parts of any argument and other three are can be treated as optional or additional parts. Those six parts include claim, support, warrant, backing, rebuttal and qualifier. How do you grade creativity in the classroom? How to you grade creativity in the class room? That is the main question that is rising in these days. Creativity grading of a student is necessary for any student to judge the level of creativity in classroom. As the creativity is not the separate faculty that some people have and others do not. (Ken Robinson). Everyone is creative but the variance in the ways of work might be possible. For example a student writes 10 pages in with the help of pencil in given time period but on the other side other second student cannot write 10 pages in given time period. Simply any one can state the first student worked better than the second student. From above mentioned results can we assume that that fist student is more creative than second student? Most of the teachers those are not able to grade the creativity level of any student will answer that Yes, First student is more creative than Second student because he can write 10 pages in the given time period. But this statement is not true practically. WHY? The reason can be found as seeing on the other side of coin, second student can draw 10 drawings with help of the pencil in given time period. On the other hand same first student is unable to draw same work in given time period. In above scenarios all the things are same excluding the nature of the work. E.g. students are same, pencils are same even pages are same but the difference is that both of student can only work better in which they are creative. Generally, as described in above example creativity is not exclusive to particular activities. And the level of grading the creativity level in class room is also not exclusive to particular judgments. Students can come up with more creative ideas; this can only be possible if the student will give proper attention in the field that he thinks he can work better than others. Creativity is a key for success in entire life. The example of this can be described as people can do their best in their own work. E.g. Scientists, Technologists, busines s man, educators can only be creative in the work they do. As in current modern environment it is noted that the generation becoming ever more difficult to engage in a traditional classroom environment. These students are also referred as â€Å"digital kids†. It is the generation that needs some creative inspiration. Now the next thing depend on teachers that how they inspire creativity. How they train the students to the best things. Creative Processing for the students are rooted in imaginative

The Importance to Teach Through the Standards in Science Curriculum Essay - 2

The Importance to Teach Through the Standards in Science Curriculum - Essay Example Science curriculum should be taught by following the standards that must be designed according to the environment of students so that they can make use of their science knowledge in their practical lives. The development of science education has structured more and more recently. So, by looking back at the last century, the curriculum of schools was very basic and everybody used to think about multi-curriculum from his own angle. More in-depth, teaching strategies were clustered around the teacher himself, and he was the center of the classroom. In the beginning, scientists were the one who used to control the science curriculum, and they had the authority for choosing the content to be taught in schools. Thus, it was hard for teachers and students to handle the science subject based on the scientists’ perspective rather than science educators’ perspectives. However, the reformation that was called for by Dewey had taken place in the late 1950s. The development of teaching science as the inquiry has taken place in the 1950s, nevertheless, the years 1955-1974 were called the Golden Age in Education. Numerous findings were poured into education in order to develop curriculum. The 1960s were even enriched with more science projects toward the science curriculum but the reformation was not very clear, until late 1960s when studies showed some achievements and attitude toward science. During the 1970s, the focus of NSF (The National Science Foundation) was on exploring the impact of the new science curriculum such as improving science methods, working in labs and discovering inquiry learning. In the 1980s and 1990s, the development of technology, computer and the World Wide Web were enough to call it a new reformation besides that the beginning of 1990s, it was the beginning of something new, it was the standard era. The complexity of the lifestyle after the 1990s was not only sensed in the States but globally too and the science education became a field for competition through many different

Celebrating Thanksgiving in America Annotated Bibliography

Celebrating Thanksgiving in America - Annotated Bibliography Example This web article was authored by David Barton. The source provides a detailed historical background to the Thanksgiving Day as celebrated in America today. The source relies on several primary sources to bring to life the events that led to the institution of the last Thursday of November as a public holiday and national day of celebration. According to the author, the celebration of Thanksgiving in America is a tradition that was introduced by European Americans more than four centuries ago. Barton notes that Thanksgiving Day traces its history to the arrival of the pilgrims from England to the New England. He notes that Thanksgiving Day is not only a day to celebrate by feasting but is dedicated to giving thanks to God for His blessings. According to the source, the first congressional resolution for the institution of Thanksgiving Day as a federal holiday was declared by President George Washington in 1789. The president declared November 26, 1789, as a holiday. In this book, Colman seeks to explore the origin the celebrations that are held in the U.S. every last fourth Thursday of November. Colman ideally seeks to answer the question as to whether the Thanksgiving Day really traces its origins to the arrival of the Pilgrims in Plymouth, Massachusetts as commonly stated. The author gives different accounts of past happenings that together point at different origins of the Thanksgiving Day. Pertinent to her discourse is the symbolic eating of turkeys on Thanksgiving Day. According to the author, many Americans love to celebrate together on Thanksgiving Day and often have turkey - a symbol of abundance - as part of their diet.

Step by step design of a lock

Step by step design of a lock Introduction This paper outlines the step by step design of a lock in amplifier based micro-ohmmeter. This is very useful in measuring small resistances without applying large currents. And find its usefulness in tracing short circuits on printed boards containing sensitive components. The Audio Micro Ohm Meter uses synchronous detection to measure low value resistances. The circuit provides a variable frequency audio tone to indicate the resistance under test. Such a tone is invaluable when troubleshooting shorted tracks on multi-layer circuit boards because it is easier and quicker to observe 1. The source generates a 1KHz, 250mV peak square wave carrier signal that is injected into the unknown resistance, the resulting voltage across the resistor is amplified by the instrumentation amplifier. The phase reversing switch then rectifies the complementary square wave input, the rectified output is not all smooth so a low pass filter is needed. A Voltage controlled is then used to measure and indicate low value resistances such as track resistances on printed circuit boards. To provide a convenient indication, we want a ‘display that has high resolution (like a digital display) but is easy to read (like analogue meter) and that preferably doesnt even need to be looked at, so we can concentrate on the probes. To trace short circuits, the one thing we dont really need is high accuracy, since we are generally moving the probes 1. A muting detector then comes in to compare the control voltage with reference voltage. The Proteus ISIS software is used for the simulation of the circuit while a printed circuit board was used for the verification of the circuit. Resistor selection, analysis of waveforms , sensitivity and linearity of the device to supply voltage and possible improvements of the device were discussed. Excitation Oscillator One of the most useful ICs ever made is the 8-pin 555 timer and it is used in many projects. It can be used to build many circuits by just adding a few external components. NE555 is a popular version and it is suitable in most cases where a 555 timer is specified. Some low power types of the 555 are made, for instance the ICM7555, but can only be used when specified (to increase battery life) because their maximum output current of about 20mA (with a 9V supply) is too low for many standard 555 circuits. The ICM7555 has the same pin arrangement as a standard 555. The circuit symbol for a 555 is a box with the pins arranged to suit the circuit diagram: for example 555 pin 8 at the top for the +Vs supply, 555 pin 3 output on the right. Usually just the pin numbers are used and they are not labeled with their function. Standard 555 ICs create a significant glitch on the supply when their output changes state. This is not a problem in small circuits with no other ICs, but in a complex circuit a smoothing capacitor can be connected across the +Vs and 0V supply near the 555 . The 555 timer operates in different modes. The astable mode suits our design criteria. An astable circuit produces a square wave, this is a digital waveform with sharp transitions between low (0V) and high (+5Vs). It is possible that the durations of the low and high states may be different. The circuit is called an astable because it is not stable in any state: the output is continually changing between low and high. Our circuit needs a square waveform output of 4KHz, for this to be obtained an appropriate resistor value can be estimated by calculation to obtain the needed signal to drive the circuit Duty cycle The duty cycle of an astable circuit is the proportion of the complete cycle for which the output is high (the mark time). It is usually given as a percentage. The duty cycle of our circuit can be determined using Time period. The timeperiod (T) of the square wave is the time for one complete cycle, but it is usually better to consider frequency (f) which is the number of cycles per second 2. The time period can be split into two parts: T = Tm + Ts 5 Mark time (output high): Tm = 0.7 Ãâ€" (R1 + R2) Ãâ€" C1 Space time (output low): Ts = 0.7 Ãâ€" R2 Ãâ€" C1 we can determine our R2 using C3= 10nF, R1=1k and f= 4kHz we calculate our R2 as Tm = 0.7 X (1K + 33K) X 10 X 10^-9 = 238 ÃŽ ¼s While Space-time represents low output, Ts= 0.7 Ãâ€" R2 Ãâ€" C1 Ts = 0.7 X (1K) X 10 X 10^-9 = 0.7 ÃŽ ¼s T = Tm + Ts = 238 + 0.7 = 238.7 ÃŽ ¼s Duty cycle = = 99.7% The Quadrature Divider A quadrature divider, comprises a plurality of flip-flops, it includes at least two flip-flop, the flip-flops are interoperably coupled in series to produce a set dividing ratio 7. Each of the flip-flops includes two differential inputs I, two differential outputs O, and two differential clock inputs C, the outputs O, of one flip-flop is connected to the inputs I, of the next flip-flop, the outputs O, of the last flip-flop is connected inversely to the inputs I, of the first flip-flop, the flip-flops are clocked at their clock inputs C with differential clock signals in a consecutive manner which, for each flip-flop, are individually selected from quadrature clock input signals, 0, 90, 180, and 270, the quadrature divider is an even number divide-by-n circuit comprising a number of 2n flip-flops and providing a number of 4n output signals having 4n equidistant phases. 9 In our case the quadrature divider receives the square waveform signal from excitation oscillator as its clock signal . Figure 4 and 5 of the appendix show the pictorial representation of the quadrature divider as obtained from the circuit simulation and the oscilloscope graphic display. There are four output signals from the quadrature divider and they each have amplitude of about 5V but frequency of 1 KHz. This shows that the quadrature divider effectively divides the clock frequency into four amongst the equidistant phases. Attenuator An attenuator is a circuit that allows a known source of power to be reduced by a known factor usually expressed in decibels. The main advantage of an attenuator is that it is made from non-inductive resistors and therefore able to change a source or load, which might be reactive, into a resistive one that is know. The power reduction is achieved by the attenuator without introducing distortion. The attenuator used in our circuit is a pi type It is used to attenuate the 0 and 180 degrees antiphase 5V signal form the quadrature divider to 250mV at 1KHz. In order to get this value we need to select R5 in this attenuator circuit. Using Thevenins theorem. RTH = R5// (R3 + R4) where RTH = 100 ohms, R3 = 1K1ohms and R4 = 1K1 ohms. R5 = = 104.76 ohms. The best resistor to this to this value is a110 ohms resistor. So R5 = 110 ohms. figure 6 of the Appendix shows the graphical output of the attenuator with amplitude of about 250mV and frequency of 1 KHz. The attenuators gain in decibels is obtained by finding the ratio of the voltage corresponding to a known factor. Using the formula: , where R1 = 1100 ohms and the Z = 100, K = = 1.2 The value of attenuation, A in dB is obtained using K = 10 (A / 20) 1.2 = 10 (A / 20) A = 20 log 1.2 = 1.584 dB Instrumentation Amplifier An instrumentation amplifier is a variation of differential amplifier with input buffers that eliminates the need for input impedance matching making the amplifier suitable for use in measurement 5. It is a differential op-amp circuit providing high input impedances with the pleasure of gain adjustment through the adjustment of a single resistor. Instrumentation amplifier has very low DC offset, low drift, low noise, very high open-loop gain, very high common-mode rejection ratio, and very high input impedances. The instrumentation amplifier used in this circuit affected its accuracy and stability. The attenuated signal is applied across a resistor with very small resistance. The voltage drop across the resistor is small and needs to be amplified. The instrumentation amplifier does this, it composes of three op-amps arranged so that there is one op-amp to buffer each input signal and one to produce the desired output with adequate impedance matching for the function.3 The gain of the instrumentation amplifier circuit used for this micro-ohmmeter design is known to be 60 dB. Using the formula below then, Av =where AV = 60 dB, R = 10 k, 60 =, R9 = = 338.98 ÃŽ © The best resistor to this value is 340 ÃŽ © and it controls the gain of the instrumentation amplifier. The negative feedback of U3:A makes the voltage at pin 2 of U3:A to be equal to Voltage across R8. while, the voltage at pin 6 of U3:B is held to a value equal to Voltage across R14. This establishes a voltage drop across R9 equivalent to the voltage difference between V1 and V2 and subsequently a current through R9 and since no current is drawn by the feedback loops of the two input op-amps , the same amount of current through R9 must be going through R10 and R12 resistors above and below it. This produces a voltage drop between points A and B equal to V The ordinary differential amplifier part of the circuit then amplifies this voltage drop by a gain of 1. The post- differential amplifier circuit, with gain = R19 / R15 and differential input resistance = 2*R15. The two amplifiers on the left are the buffers. With R9 = Rgain removed (open circuited), they are simple unity gain buffers; the circuit will work in that state, with gain simply equal to R19 / R15 and high input impedance because of the buffers. The buffer gain is increased by putting resistors between the buffer inverting inputs and ground to shunt away some of the negative feedback; however, the single resistor Rgain between the two inverting inputs is a much more elegant method: it increases the differential-mode gain of the buffer pair while leaving the common-mode gain equal to 1. This increases the common-mode rejection ratio (CMRR) of the circuit and enables the buffers to handle much larger common-mode signals without clipping than would be the case if they were sep arate and had the same gain. Another benefit of the method is that it boosts the gain using a single resistor rather than a pair, thus avoiding a resistor-matching problem. The ideal common-mode gain of an instrumentation amplifier is zero. The common-mode gain of the instrumentation amplifier used in this design is near zero because of the equally numbered resistors and by the matched common-mode gains of the two buffer op-amps of the instrumentation amplifier. To obtain a closely matched resistors is difficult, as is optimizing the common mode performance of the input op-amps. All resistors are of equal value for this instrumentation amplifier except for R9. This method has the advantage of possessing extremely high input impedances on the input voltage across R=39 because they connect straight into the non-inverting inputs of their respective op-amps and adjustable gain that can be set by a single resistor. The lowest gain possible is obtained from the above circuit with R9 completely open (infinite resistance), and that gain value is 1. The output of the instrumentation amplifier is an anti-phase square wave signal from the that connects to the phase shift detector for further modification. Lock-In Amplifier A lock-inamplifier otherwise known as a phase-sensitive detector is a type of amplifier that can extract a signal with a known carrier wave from extremely noisy environment. It is a homodyne with a very low pass filter making it very narrow band. Lock-in amplifiers utilizes mixing, via a frequency mixer, to convert the signals amplitude and phase to a DC—in fact a time-varying low-frequency—voltage signal. It is often used to measure phase shift, even when the signals are of a high value and of high signal-to-noise ratio, and do not need any other improvement.To obtain signal at low signal-to-noise ratios, it is necessary that a strong, undiluted reference signal is made available at the same frequency as the signal to be measured. Phase Difference Two oscillators that have the same frequency and different phases that is, a phase difference, the oscillators are said to be out of phase with each other. The amount by which such oscillators are out of step with each other can be expressed in radians from 0 to 2Ï€ or in degrees from 0 ° to 360 °, If the phase difference is 180 degrees (Ï€ radians), then the two oscillators are said to be in antiphase. If two interacting waves meet at a point where they are in antiphase, then destructive interference will occur. It is common for waves of electromagnetic (light, RF), acoustic (sound) or other energy to become superposed in their transmission medium. When that happens, the phase difference determines whether they reinforce or weaken each other. Complete cancellation is possible for waves with equal amplitudes. Phase compensation This is the correction of phase error (i.e., the difference between the actually needed phase and the obtained phase). To obtain stability in an operational amplifier a phase compensation is required. To keep a phase margin in the phase compensation a capacitor/RC network is usually used . A phase compensator works by subtracting out an amount of phase shift from a signal which is equal to the amount of phase shift added by switching some additional amplifier stages into the amplification signal path. Low-Pass Filter A low-pass filter is a filter that passes low-frequency signals but attenuates (reduces the amplitude of) signals with frequencies higher than the cutoff frequency. An ideal low-pass filter completely eliminates all frequencies above the cutoff frequency while passing those below unchanged: its frequency response is a rectangular function, and is a brick-wall filter 8. If we need to get rid of an interfering signal in order to get a lot of attenuation, several RC filters can be cascaded. Unfortunately, the impedance of one RC section affects the next. What this means is that the transition between the pass and stop bands will not be sharp. A sharp transition helps reduce the interfering signal without causing degradation to the desired signals. In this case, the Sallen-Key active filter can do the job well. This circuit uses a 2-pole filter. Cascading a number of stages can give a steep attenuation transition with a very sharp knee. This cut-off frequency aids in selecting the R20 an d R22 resistor values to be used in the low pass filter design to average noise in the DC signal 6. The required Q for the butterworth filter = 1.414. The op-amp stage is a unity gain follower when R20 = R22. if C9 and C10 are equal, then the Q = 1.5858 for Butterworth response. Using convenient near values gain of 1.56 in the formula, R20 = R22 = Q / (4 ·Ãâ‚¬Ã‚ ·fo ·C9) where, fo = cut-off frequency = 4Hz, C9 = C10 = 0.1ÃŽ ¼F R20 = R20 = 310.31kÃŽ © The nearest standard resistor value to this calcualted resistor value is 330k Voltage Controlled Oscillator A voltage-controlled oscillator is an oscillator whose frequency is determined by a control voltage. As the control voltage causes the frequency to rise slowly until it hits a maximum and then falls back to the starting frequency. The first op-amp is an integrator(U7:A). A voltage divider puts the + input at half the control voltage. The op-amp attempts to keep its input at the same voltage, which requires a current flow across the 100k to ensure that its voltage drop is half the control voltage. When the MOSFET at the bottom is on, the current from the 200k goes through the MOSFET. Since the 100k resistor has the same voltage drop as the 100k but half the resistance, it must have twice as much current flowing through it. The additional current comes from the capacitor, charging it, so the first op-amp must provide a steadily rising output voltage to source this current. When the MOSFET at the bottom is off, the current from the 200k goes through the capacitor, discharging it, so a steadily falling output voltage is needed from the first op-amp. The result of the operation of this integrator circuit is a triangular waveform confirmed by figure 13 of the appendix. The capacitance of the capacitor in our circuit is determined thus: The second op-amp is a Schmitt trigger. It takes the triangle wave as input. When the input voltage rises above the threshold of 3.33 V, it outputs 5 V and the threshold voltage falls to 1.67 V. When the input voltage falls below that, the output goes to 0 V and the threshold moves back up. The output is a square wave. Its connected to the MOSFET, causing the integrator to raise or lower its output voltage as needed 4. Figure 14 shows the graphical representation of this circuit . The variation of the supply voltage from 3V to 9V while observing the output signal frequency obtains the sensitivity of the overall voltage- controlled oscillator circuit to supply voltage. From the test observation, the VCO produced no output signal at 3Vand beyond 6.2V. The below table shows the values obtained for the during the sensitivity test of the voltage-controlled oscillator. Using the power supply sensitivity formula Sensitivity Percentage change in frequency = Percentage change in power supply voltage = Between 5V to 6V, the percentage change in power supply voltage = = 20% While the percentage change in frequency is = 3.575% VCO sensitivity to this supply voltage variation = = 17.875 % Between 4V to 5V, the percentage change in power supply voltage = = 25% While the percentage change in frequency is = 12.21% VCO sensitivity to this supply voltage variation = = 48.84% The inference from the above calculation shows that the sensitivity of this lock-in amplifier based micro-ohmmeter to power supply voltage increases with reducing supply voltage. The tuning range of the VCO refers to the range of oscillation frequencies Two important parameters in VCO design are linearity and sweep range. Linearity correlates the change in frequency or the VCO output to the change in the control voltage. The sweep range is the range of possible frequencies produced by VCO control voltage. The linearity Muting Detector Circuit The filtered output from the phase sensitive detector is a control voltage which, with Zero input ( short circuited probes) is about Vg volts . It goes more positive with increasing signal level. With maximum input(open circuited probes) the voltage will saturate near the positive supply rail. This would result in a loud high pitched tone from the oscillator, which is not what we want. We want the it to be mute when the probes are disconnected and to do this another operational amplifier is brought in to compare the control voltage with a reference voltage. Whenever the control voltage goes higher than the reference, the output will go negative. This allows a small current to be drawn through D1 and R25, which will keep the oscillator transistor switched off, stopping oscillation. The output voltage of an AM synchronous detector is compared with a reference potential level by a voltage comparator. A muting device connected with the output of the detector is controlled by a control circuit connected with the comparator. Through this control circuit, the detector output is immediately muted when the detector output level falls below the reference potential level, and the muting of the detector output is removed after a predetermined retardation when the detector output level exceeds the reference potential level. References 1 Bateson, S. January 2010, Electronic Signal Conditioning Labs, Teesside University, Middlesbrough 2 Hewes, J, (17.02.2010), 555 Timer, http://www.kpsec.freeuk.com/555timer.htm#astable 3 Instrumentation amplifier, (14.02.2010) http://en.wikipedia.org/wiki/Instrumentation_amplifier 4 Java, (19.01.2001), Voltage controlled oscillator, http://www.falstad.com/circuit/e-vco.html 13022010 5 Kuphaldt, T, (12.02.2010), Differentiator and Integrator Circuits, http://www.allaboutcircuits.com/vol_3/chpt_8/10.html 6 Low pass filter, (14.02.2010) http://en.wikipedia.org/wiki/Low-pass_filter 7 Quadrature Divider, (17.02.2010), http://www.patentstorm.us/patents/7425850/claims.html 8 Sallen-key low-pass filter (13.02.2010), http://www.ecircuitcentezr.com/Circuits/opsalkey1/opsalkey1.htm 9 Widerin, P, (13.02.2010), Quadrature Divider, http://www.freshpatents.com/Quadrature-divider-dt20070111ptan20070009077.php

telecommunications :: essays research papers

Networking and Telecommunications Table of Contents Introduction Technology Involved Telephone System Network Setup Cost Sampling of Companies Possible Future Trends Global Implications Conclusion Introduction We have been hired to design a small network for a company that will utilize the newest technology out there and give each person the capability to work from the office as well as on the road. This company has ten people and will be working from home and on the road quite often. The best solution would be to set up a wireless network with additional security and the use if Internet Protocol phones. We will also make a push to hire a full time systems administrator to handle all the security issues and the overall maintenance of the network. First we need to stress the importance of a full time systems administrator to work from the site as well as on call 24 hours a day. We are going to use a wireless network as well as IP phones and from time to time they are going to experience connectivity issues as well as authentication problems logging into the servers remotely. The main point we must stress to the customer is the security issues that affect every network. The network will need constant monitoring and updates due to the nature of the business and the virtual private network that will be utilized for off site connectivity. Technology Involved The proposed hardware list will contain 3 physical servers, a Cisco router, 2 black and white laser printers, a color laser printer, 12 laptops, 12 IP phones, a server rack, cabling, and wireless PCMCIA cards. We want to make sure there are a few laptops and phones configured for users who are experiencing problems. This list will continue to grow as we start to install the network and get everything configured properly and continue on with the testing. We must also ensure we have the proper licensing for all the servers to include Microsoft Server 2003 and Microsoft Exchange. We will run Symantec Antivirus software on each of the laptops as well. Telephone System The telephone system that we are going to put into place is a Mitel system consisting of twelve 5220 IP phones. This system will consist of a voice mail system, and the ability to take your phone home and all your calls will be forwarded to that phone making it easier for our staff to work from home without the customers knowing. The hardware involved in the setup of this system is a PC for voice mail administration, and two switches. telecommunications :: essays research papers Networking and Telecommunications Table of Contents Introduction Technology Involved Telephone System Network Setup Cost Sampling of Companies Possible Future Trends Global Implications Conclusion Introduction We have been hired to design a small network for a company that will utilize the newest technology out there and give each person the capability to work from the office as well as on the road. This company has ten people and will be working from home and on the road quite often. The best solution would be to set up a wireless network with additional security and the use if Internet Protocol phones. We will also make a push to hire a full time systems administrator to handle all the security issues and the overall maintenance of the network. First we need to stress the importance of a full time systems administrator to work from the site as well as on call 24 hours a day. We are going to use a wireless network as well as IP phones and from time to time they are going to experience connectivity issues as well as authentication problems logging into the servers remotely. The main point we must stress to the customer is the security issues that affect every network. The network will need constant monitoring and updates due to the nature of the business and the virtual private network that will be utilized for off site connectivity. Technology Involved The proposed hardware list will contain 3 physical servers, a Cisco router, 2 black and white laser printers, a color laser printer, 12 laptops, 12 IP phones, a server rack, cabling, and wireless PCMCIA cards. We want to make sure there are a few laptops and phones configured for users who are experiencing problems. This list will continue to grow as we start to install the network and get everything configured properly and continue on with the testing. We must also ensure we have the proper licensing for all the servers to include Microsoft Server 2003 and Microsoft Exchange. We will run Symantec Antivirus software on each of the laptops as well. Telephone System The telephone system that we are going to put into place is a Mitel system consisting of twelve 5220 IP phones. This system will consist of a voice mail system, and the ability to take your phone home and all your calls will be forwarded to that phone making it easier for our staff to work from home without the customers knowing. The hardware involved in the setup of this system is a PC for voice mail administration, and two switches.

Globalization trends

Each of these stakeholders gains when a company improves the value Hahn. The common key processes that should be used to improve the value and supply chain revolve around the customer, stakeholder, and supplier. Strategic planning to change management to customer service all serve a purpose. That purpose is to enable companies and partners to do business in such a different way that creates competitive advantage. When performance is elevated to a level in which success is imminent the company not only sees increase in profits but also sees new levels in customer service, inventory, production, and synchronization of key operations.Country Risk Analysis – Struck Entering Japan Any number of risks can affect an organization's global operations and the way to overcome these risks is by implementing advantageous strategic goals and strategies. In any new business venture a firm must take risks to achieve objectives set. When expanding into a new country a higher degree of risk mus t be taken. However, a higher degree of risk does not mean the company will be venerable to losses because of changes in the economies or political situations in countries in which they are investing.Understanding the types of risk involved and properly planning for these risks will allow the company to mitigate most problems and revert losses. As described by A. M. Best's assessment (2009) of the three categories of risk, Japan has been rated low in economic, political, and financial systems. Economic Environment Japan is the second largest economy in the world behind the United States. Yet, revised figures for the final quarter of 2009 grew by less than what was estimated, 1. 1 percent. â€Å"Japan continues to face the problem of deflation† (BBC News, 2010, Para. 6).Because deflation is bad for the economy, the tendency is for consumers and businesses to delay in making major purchases. With the value of currency rising all he higher value of currency to purchase more. Ban k of Japan board members during their February meeting had mixed views on the economy. Some members believe that upside and downside risks were becoming balanced, whereas others felt â€Å"considerable downside risks to the economy' (Toasts, 2010, Para. 2). Believing that brand recognition alone could aid in the success of expansion into Japan was not a good move for Struck.Because the Japanese have a taste for everything western Struck was sure about the marketability of the Japanese. Unfortunately, Struck suffered because of â€Å"bad predictions† (Gators, 2009, Para. 0) and not enough information gathered on Japan's economy. Political Environment Presently, Japanese Prime Minister Taro Ass is struggling to implement strategies to bolster Japan's economy. The Liberal Democratic Party (LDAP) has not passed a supplemental budget needed to fund the first economic stimulus package discussed back in October 2008 (Hashish, 2009).The political paralysis of Japan takes part in the global financial crisis causing the eroding of consumer product purchases. Once a business is up and running the worry becomes entering and enforcing contracts with errs and sellers. Even with guidelines set in formulating and enforcing contracts variations are still placed on certain ways a country views the legal system. Japan is a civil law system country encouraging shorter and less specific contracts because the general civic code deals with many pertinent issues (Daniels, Redheaded ; Sullivan, 2007).The wealth of the country decides on what business regulation procedures are required when opening a business. With free trade becoming more popular in countries that at one time placed strict regulations on foreign businesses he increase in capital has effected multinational and international companies to expand outside their home countries. The relaxed restrictions result in opportunities for people to experience global products and brands. Components of a Global Business Plan A business plan tells a story about a company's strategies and goals.Along with this information, a business plan also requires specific components. The first section must start with an executive summary. The executive summary is a brief synopsis of the business plan that includes a description of the nature of the business, a reason rodents or services is needed, description of the organization and management team, and a brief explanation on the sales and marketing approach. The next section is more detailed information taken from the executive summary including the business, market analysis, financing, and management sections.Conclusion Stakeholders can be anyone directly and indirectly associated with the company, such as customers, suppliers, employees, and shareholders. Each can benefit as well as lose. The key is making sure all activities are streamlined and work in a synchronized manner. When this happens stakeholders benefit by lower costs, new reduce design and development, and trustworthiness of the company. Economic exposure is defined as, â€Å"the extent to which a firm's market value is sensitive to unexpected changes in foreign currency' (Perry, 2009, Three Types of Foreign Exchange Exposure for Mans, Para. ). Before expanding into another country, researching the economic structure of the country is important. Economic risk comes from the inability of a country to meet financial obligations. Sustaining, and self-governing society (Daniels, Redheaded, & Sullivan, 2007, Para. 1). Creating a majority of people in society that accepts present political views an result in positive benefits including the attraction of foreign investment and international trade. When turmoil among the people and the roles of government exists, friction occur creating unpleasant unrest.

The eNotes Blog Cutting Teeth onLiterature

Cutting Teeth onLiterature In the perennial push to make new and over-achieving parents as paranoid as possible comes this new line of classics designed for you guessed it babies.  Baby Einstein? Pffft. Thats for all those poor children born in the last century. And besides, the claims that listening to classical music will enhance young _____________________ s (insert nom-du-jour here) intelligence proved false. So false, in fact, that consumers were refunded their money. But, like I said, it is now the twenty-first century and things are different. Now we have Baby Lit. The first two titles to be released, in board book form, are Pride and Prejudice and Romeo and Juliet. They are condensed to, I am assuming, handsome-boys-and-pretty-girls-dressed-in-primary-colors-and-smiling-a-lot. Because otherwise, a boiled-down-to-bare-essentials of Romeo and Juliet would involve a lot of yucky stabbiness. And I dont care how precocious your toddler is, two-year-olds simply cannot reliably comment on the politics of primogeniture. I have two children, aged 14 and 11, who are now top-notch readers. But when they were 0-3 years, the target audience for Baby Lit, they primarily used their board books for nomming purposes, and all were equal opportunity in the drool rotation: happy spoon, pat-able bunnies, and dump truck stories alike.  So go ahead, get a few Baby Lit titles for your diaper bag. It couldnt hurt and it just might make that tooth come through.

The Hillsborough disaster Essay Essay Example

The Hillsborough disaster Essay Essay Example The Hillsborough disaster Essay Essay The Hillsborough disaster Essay Essay The Hillsborough catastrophe was an incident that occurred on 15 April 1989 at the Hillsborough bowl in Sheffield. England. during the FA cup semi-final lucifer between Liverpool and Nottingham Forest association football nines. The crush resulted in the deceases of 96 people and hurts to 766 others. The incident has since been blamed chiefly on the constabulary. The incident remains the worst stadium-related catastrophe in British history and one of the world’s worst association football catastrophes. association football nines used to contend the semi-final of the FA Cup at a impersonal locale. and in 1989 Hillsborough was selected by the association football. While opposing protagonists were segregated in the bowl. Liverpool fans were allocated the Leppings Lane base. reached by a limited figure of turnstiles. Entry to the land was slow due to the few decrepit turnstiles available to the Liverpool fans which caused unsafe overcrowding outside the land before kick-off. In an effort to ease force per unit area outside the land. Chief Superintendent Duckenfield ordered an issue gate to be opened. The opened issue gate led to a tunnel marked â€Å"Standing† which led straight to the two already overcrowded enclosures ( pens ) . In old old ages the tunnel had been closed off by constabulary when the two cardinal pens were full. nevertheless on this juncture the tunnel was unmanned. The resulting inflow of protagonists caused suppression and some fans climbed over side fencings or were lifted by fellow protagonists onto the base above to get away the crush. Moments after kick-off. a crush barrier broke and fans began to fall on top of each other. The game was stopped after six proceedingss. To transport away the injured. protagonists tore down advertisement billboards to utilize as stretchers and exigency services were called to supply aid. Of the 96 people who died. 14 were admitted to infirmary. When the FA Chairman visited the Control Box to happen out what had happened. Chief Superintendent Duckenfield told a ‘disgraceful prevarication that the protagonists had â€Å"rushed† the gate. The 1990 functionary enquiry into the catastrophe. the Taylor Report. concluded â€Å"the chief ground for the catastrophe was the failure of constabulary control. The findings of the study resulted in the riddance of standing patios at all major football bowls in England. Wales and Scotland. On the twentieth day of remembrance of the catastrophe. authorities curate Andy Burnham called for the constabulary. ambulance and all other public bureaus to let go of paperss which were non made available to Lord Justice Taylor in 1989. This action led to the formation of the Hillsborough Independent Panel. which in September 2012 concluded that no Liverpool fans were responsible for the deceases. and that efforts had been made by the governments to hide what happened. including the change by constabulary of 116 statements associating to the catastrophe. The facts in the study prompted immediate apologies from Prime Minister David cameron ; the Chief Constable of South Yorkshire Police Chairman David Bernstein and Kelvin Mackenzie. then-editor of The Sun. for their organisations’ several functions. In September 2012. the Hillsborough Independent Panel concluded that up to 41 of the 96 human deaths might hold been avoided had they received prompt medical intervention. The study revealed â€Å"multiple failures† by other exigency services and public organic structures which contributed to the decease toll. In response to the panel’s study. Attorney General for England and Waless. Dominic Grieve MP. confirmed he would see all the new grounds to measure whether the original inquest finding of facts of inadvertent decease could be overturned. On 19 December 2012. a new inquest was granted in the High Court. to the alleviation of the households and friends of the Hillsborough deceased. 1. Examination of Evidence associating to the Hillsborough football bowl catastrophe. Lord Justice Stuart-Smith. February 1998. Page 83. hypertext transfer protocol: //www. southyorks. constabulary. uk/sites/default/files/STUART 2. Conn. David ( 17 April 2009 ) . â€Å"Football: David Conn on Hillsborough† . The Guardian. Retrieved 12 September 2012. 3. ^ Eason. Kevin ( 13 April 2009 ) . â€Å"Hillsborough: the catastrophe that changed football† . The Times ( UK ) . Retrieved 1 October 2009.

Statistics 401 Mod 2 Case - Hypothesis Testing 1 Coursework

Statistics 401 Mod 2 Case - Hypothesis Testing 1 - Coursework Example Since then in the U.S. genetic engineering has expanded in various areas of food production. In 2006, among all countries of the world, United States alone grew 53% of genetically modified crop (Oak Ridge National Laboratory). The purpose of this study is to evaluate influence of GM food over non-GM food. In order to do so, this assignment has selected Tomatoes. It is claimed that genetically modified tomatoes show longer shelf lives than non-genetically modified tomatoes (Discovery). This assignment uses statistical design method to verify this claim. The design method is called hypothesis test. There are two different hypotheses; null hypothesis, and alternative hypothesis. If one hypothesis is true then the other hypothesis is false. In this design, null hypothesis is defined as Ho: The mean value of shelf lives of GM tomatoes is equal or greater than the mean value of shelf lives of non-GM tomatoes. The alternative hypothesis is defined as Ha: The mean value of shelf lives of GM tomatoes is less than the mean value of shelf lives of non-GM tomatoes. In a mathematical way, the test tends to satisfy the condition SL mean GM > = SL mean non-GM, where SL mean GM is the mean value of shelf lives of genetically modified tomatoes and SL mean non-GM is the mean value of shelf lives of non-genetically modified tomatoes. ... are less than       non-GM tomatoes non-GM shelf lives                   Hypothesis Evaluation against observations Acceptance of hypothesis Observations Ho Ha Ho Ha Test confirms null, Ho Null is TRUE Alternative is FALSE No Error Type I Error Test does not confirm null, Ho Null is FALSE Alternative is TRUE Type II Error No Error Type I error: Tomato growers do not buy GM plants and lose money from rotting tomatoes. Type II error: Tomato growers buy GM plants, which are more expensive than non-GM, but shelf lives do not increase. Tomatoes may be produced both from genetically modified or non-genetically modified plants. The study claims that shelf lives of GM tomatoes are greater than the shelf lives of non-GM tomatoes. Through statistical test it can be verified whether the distributions of shelf lives of GM and non-GM tomatoes differ from each another or not. This can be achieved through Chi-square test. The Chi-square test consists of (1) hypothesis formulation, ( 2) test design plan, (3) sample data analysis, and (4) result interpretation. The Chi-square test also assumes the following: GM tomatoes sampling is random; the population is10 times larger than the sample; the variable is categorical, and each level of the variable has at least 5 frequencies. The Chi-square study uses shelf lives values from GM tomatoes population and compares them to the shelf lives values of non-GM parameters. In Chi-square test, shelf lives of non-GM parameters are considered as expected values. The shelf lives of non-GM parameters include three levels: (1) mean value of the population, (2) greater than the mean value, and (3) less than the mean value. If the GM tomatoes do not increase the shelf lives, then the study will duplicate the non-GM results. On the contrary, if the GM

Strategic Management analysis Essay Example | Topics and Well Written Essays - 1500 words

Strategic Management analysis - Essay Example However, since the use of petroleum products began, the adoption of other forms of fuel process has been slow. With the coming of companies like Better Place, the use of electricity to replace oil has been taking root. This company is motivated by the fact that the rise use of Electric Vehicle is slow, despite the fact that these vehicles are environmental friendly. The company has its own mission and vision that refine its focus in the automotive industry. The company’s mission is to first reduce and later eventually eliminate the use and dependence of oil in automobile industry. This mission defines the company’s focus and what it does differently to create value. This is a global company captivated to creating the world a better place. It works with stakeholders in automobile industry to enhance the spread of EVs. 1.2. Vision The company’s vision is to integrate car companies with the other companies like the battery and utilities companies, and consumers in a way that will enhance an increase in the use of EVs. This vision shows the belief of the company that the only way consumers can adopt EVs in a massive way is by overcoming the main challenge behind the use of EVs, which is its mobility. This belief differentiates the company from other value creators who believed that the massive adoption of EVs will be possible only when the battery capacity is increased. This increase will help cars travel over a hundred miles that are currently possible. Therefore, the company believes that it can achieve the generating of EVs by re-engineering cars and not batteries. This is possible by working on the available technologies and involving the relevant profiles in the automobile industries (Rothaermel 2013). 1.3. Stakeholders The table below maps the stakeholders in Better Place Company Stakeholder Claims and Interests Class Investors Transport project that would have higher returns, receive positive image, and innovative. Key player Government Developing a sustainable transport system Key player Auto Manufacturers developing a sustainable transport system Key player Regulatory Bodies Receive information and regulate organization behavior Keep Satisfied Technical specialists Specify the required technologies to meet the company’s requirements Key player Customers Make successful transitions Key player Program manager Budgeting Keep Informed The government and auto manufacturers are in support of a sustainable transport system. Their failure to acknowledge EVs in some instances is a threat. Customers desire to be relieved from the high cost of oil opt for EVs. The company is interested in reducing pollution and consumption of oil. The project is vital in reducing the increasing economic costs that come with high dependency of oil in different industries including transport. To effectively address the concerns of stakeholders, the company needs to integrate the working of different stakeholders to share ideas (Abernat hy, J and Utterback 1975). In addition, customers need to be educated on the significance of EVs. Finally, the company will work to show admirable results in short period to attract more investors. 2. Industry Analysis and Scenarios 2.1. Industry Analysis Better place has can establish its strategy beyond the suppliers bargaining power. The company has numerous suppliers located in different countries who can give vehicle products and other services. In addition, the customers are located in different countries like Australia and United States of America. The main substitute for EVs is the oil. This product has received numerous criticisms regarding its emission on the environment. In a nutshell, suppliers are forced to embrace new initiatives that are environmental friendly (Thompson et al.