Phase Interpolator Pll In Simulink Computer Science Essay

Phase Interpolator Pll In Simulink Computer Science Essay Phase Locked Loops (PLLs) is a negative feedback system that matches the output frequency to the input frequency. Many applications utilize PLLs such as: frequency synthesizers, skew cancellation, reference clean-up, and clock-data recovery [1]. For frequency synthesizers, the goal is to generate a clock at a higher speed to that of a slower reference clock. For example, generating a 1 GHz signal from a 100 MHz reference signal. This is a common goal for many optical applications. For example, current work performed by AOSense, a leading research and development company in atomic-level sensing requires clock frequencies well into the hundreds of megahertz and even into the gigahertz range. For this reasons, PLLs, such as the HMC698LP5 from Hittite Microwave are commonly used in their designs. standard pll design A basic PLL consist of four main building blocks; Phase Frequency Detector (PFD), Charge Pump (CP), Low Pass Filter (LPF), and Voltage Controlled Oscillator (VCO). Figure 1 is a block diagram of a basic PLL. http://madfeekree.files.wordpress.com/2010/11/basic-pll-block1.png?w=614 Figure 1. Basic PLL Block Diagram [2] The PFD detects any differences in phase and frequency of the reference and feedback signals and generates an appropriate Up or Down signal. These signals are then passed to the CP, in which, the CP sources current into the loop filter (Up signals) or sinks current from the loop filter (Down signals). The LPF converts the signal into an analog voltage for the VCO, in which the VCO outputs a clock at either a higher faster or slower frequency based on the UP DOWN signals generated by the PD. This process is repeated until the output frequency of the VCO properly matches that of the reference frequency. These blocks were constructed and simulated in MATLAB R2112a Simulink. A. Phase Frequency Detector As previously stated, PFD are devices that measures the difference between the reference and feedback clocks. There are two commonly used phase detectors: linear and binary. A linear phase detectors output is a pulse signal with a varying width. When the feedback signal is severely out of phase with the reference signal, the pulse width is larger compared to when the two signals are close to being similar. In contrast, a binary (bang-bang) phase detectors output is a fixed pulse width. This binary output signifies if the feedback signal arrived early or late compared to the reference signal. In this design, a modified version of a linear phase frequency detector was implemented in Simulink, as depicted in figure 2. This PFD generates a logic high for the UP signal when the feedback signals rising edge arrives ahead of the reference signals rising edge for the length of the difference. Similarly, when the feedback singals rising edge arrives after the reference signals rising edge, a logic high is given for the DOWN signal for the duration of the difference. M:SJSUEE 227ProjectReport PicturesFigure 2 PFD.png Figure 2. Phase Frequency Detector Model Applying a test signal to both the reference and variable (feedback) inputs and adjusting the feedback signal with some delay, demonstrates the proper functionality of the PFD. This is illustrated in figure 3. The plot is as given from the top down: UP, DOWN, Reference, and Variable CLK. The UP and DOWN signals are then fed to the charge pump, which directs the loop filter to increase or decrease in voltage, signifying an increase or decrease of the VCO output signal. But first, a discussion on the charge pump and its modelling is in order. M:SJSUEE 227ProjectReport PicturesFigure 3 PFD Test.pngFigure 3. PFD Test Results B. Charge Pump The charge pump block in figure 1 is designed to convert the UP and DOWN signals into current for the loop filter. When the UP signal is logic high, the charge pump will source current to the loop filter and when the DOWN signal is logic high, the charge pump will since current from the loop filter. A circuit representation of a charge pump is given in figure 4 below. From this representation, several key design challenges are noticed. Such as proper current matching from both I1 and I2, parasitic capacitance from the two current sources, and leakage current into and out of the loop filter. M:SJSUEE 227ProjectReport PicturesFigure 4 CP.png Figure 4. Charge Pump Circuit A Simulink model of a charge pump is given in figure 5. Notice how the DOWN signal is subtracted from the UP signal and then fed into a gain of 0.001. This gain value represents the current of the two current sources. The delay representsrepresents the current of the two current sources. The delay represents the capacitor, Cp, in figure 4. M:SJSUEE 227ProjectReport PicturesFigure 5 CP Block.png Figure 5. Charge Pump Model Simulating the charge pump model should show a slowly increasing value as long as the UP signal is high more often than the DOWN signal. Figure 6 below shows such a scenario as the CP_Out signal slowly ramps up. This signifies that the VCO will speed up to force the reference signal to catch up to the data signal. M:SJSUEE 227ProjectReport PicturesFigure 6 CP Test.png Figure 6. CP Test Results C. Loop Filter A loop filter is an entirely passive component device and consist of two capacitors and a resistors as illustrated in figure 7. The loop filter has two branches, the integral path and the proportional path. The integral path is the C2 branch, while the proportional path is the C1 and R branch. As the name implies, the loop filter filters high frequency noise spurs caused by sampling, but this also adds a pole at 1/RC2 [1]. A resistor in the loop filter provides an isolation phase correction from frequency correction. M:SJSUEE 227ProjectReport PicturesFigure 7 Loop Filter Circuit.png Figure 7. Loop Filter Circuit A simulink model of a loop filter is given in figure 8 below. The input to the loop filter is connected to the output of the charge pump. The purpose of the loop filter is to take a current and convert it into a voltage, called the control voltage of the VCO. M:SJSUEE 227ProjectReport PicturesFigure 8 Loop Filter Block.png Figure 8. Loop Filter Model Simulating the loop filter in Simulink gave the plot in figure 9. Re-examining this figure, there may be a an error in the loop filters output as its a sawtooth waveform. This will be compared to the VCO output plot for proper functionality in the next section. Figure 9. Loop Filter Test Results D. VCO The final block in figure 1 is the VCO block. Theres a slight modification to the VCO block compared to that in figure 1 due to the future use of phase interpolation. Due to this, a phase generator block was required. This phase generator block is given in figure 10. M:SJSUEE 227ProjectReport PicturesFigure 10 Phase Generator Block.png Figure 10. Phase Generator Model The purpose of the phase generator block is to allow various phases for the phase interpolation PLL in the forthcoming section. For this, the signal is limited to 360 degrees and various phases are generated as illustrated in figure 11. This is the final design of the VCO. M:SJSUEE 227ProjectReport PicturesFigure 11 VCO Block.png Figure 11. VCO Model A common VCO has a single output, known here as CLK_0. However, due to the use of phase interpolation in the second half of this PLL design, 3 other phases were generated. Each phase separated by 90 degrees. The feedback to the PDF is derived from CLK_0 signal that is passed through a relay that generates a clock signal from a sinusoidal signal. The final PLL design for the first potion is given in figure 12. M:SJSUEE 227ProjectReport PicturesFigure 12 PLL Block.png Figure 12. PLL Design Phase 1 Testing of the pll Testing of the PLL consisted of a pulse generator at the reference clock input. This signal was set to 50 Hz is mentioned in [3]. Figure 13 is a plot of the VCO output (CLK_0). The plot shows that in the beginning, the VCO is attempting to lock and after about 30 seconds, the system locks onto the frequency. M:SJSUEE 227ProjectReport PicturesFigure 13- PLL Test Results.png Figure 13. PLL Phase 1 Test Results phase interpolator design A. Theory Behind Phase Interpolators Phase Interpolators (PI) is a modified version of a PLL. PIs function by taking a weighted values and multiplying and adding them to two signals shifted in phase at the same frequency. These weighted values are call alpha and beta. Beta equals 1 minus alpha as given in equation (1) (1) Where, B. Binary Phase Detector The phase detector used in the PI loop has been modified to act as a bang-bang phase detector instead of a linear phase detector. A modified version of the bang-bang phase detector [4] was used. This modified bang-bang phase detector is given in figure 13i. M:SJSUEE 227ProjectReport PicturesFigure 13i- BBPD Block.png Figure 13i. Modified Bang-Bang Phase Detector A bang-bang phase detector is different from a linear phase detector since the output signals are fixed pulses and they signify if the feedback clocks rising edge is early or late. Those early and late signals are then fed into a charge pump, which tells the VCO (by means of a loop filter) to go faster or to slow down. Simulating this modified version of a phase detector was performed in Simulink. The feedback (reference) signal was delayed compared to the DATA clock. This implies that the phase detector outputs a logic high for the LATE signal, in which it does. M:SJSUEE 227ProjectReport PicturesFigure 13ii- BBPD Test.png Figure 13ii. Bang-Bang Phase Detector Test Results D. Quadrature Clocks Quadrature Clocks are clocks that are separated by 90 degrees. The model to accomplish this was given in figure 11 of the VCO. Testing this with a simple pulse generator input signal provided the plots in figure 14. These plots show four signals that are 90 degrees out of phase with one another. M:SJSUEE 227ProjectReport PicturesFigure 14- Quad Phases.png Figure 14. Quadrate Phases Reading from the top of figure 14 to the bottom, the phases are as follows: 0, 90, 180, and 270 degrees. E. Counter To ensure the entire 360 degrees of phases are covered, as given in the VCO, a counter was implemented. For this simulation, an 8-bit counter was used. This implies that for 360 degrees and an 8-bit counter, each degree represents 1.41 degrees of resolution. The importance of this is related to the unit circle. For a count from 0-255, each 64 counts represents a phase shift of 90 degrees. A simple counter was constructed in Simulink using a just three blocks as shown in figure 15. M:SJSUEE 227ProjectReport PicturesFigure 15- Counter.png Figure 15. Counter Model F. Alpha, Beta, and MUX Values To determine the alpha, beta, and the MUX values, a model was created in Simulink. From section C, an 8-bit counter was created. Of these 8-bits, bits 0-5 represent the alpha bits and bits 6-7 represent the MUX bits. These bits were extracted and then the alpha and the beta values were obtained as mentioned in section A and equation (1). A Simulink model is given in figure 16. M:SJSUEE 227ProjectReport PicturesFigure 16- Alpha Beta Mux.png Figure 16. Alpha, Beta, and MUX Extractor Testing the model in figure 16 revealed an interesting note. This model was taken directly from [3] and when a simple test of this block was performed, the MUX bits appeared to be out of the ordinary. It was expected that the MUX values would range from 0-4 as two bits were extracted, giving a four step ramp. However, the four step ramp ranged from 0-192. This is shown in figure 17. The next section discusses the MUX switching and this is why the issue was noticed. Because of this, this discussion will take place in the next section. M:SJSUEE 227ProjectReport PicturesFigure 17- Alpha Beta Mux Test.png Figure 17. Alpha, Beta, and MUX Test Results G. MUX Model Since a PI requires the use of two different phases simultaneously, a MUX is required to give the proper signals. In Simulink, a MUX was generated using multiport switch components. The model is given in figure 18 below. As there are four inputs, the select line is required to be a value of 1, 2, 3, or 4 in order to properly select the desired line. The select line is driven by the 2-bit MUX value that was obtained in the previous section, F. This implies that the MUX values should be a 1, 2, 3, or 4 value and not the values that are shown in figure 17. The four steps are correct, but further work is need to properly generate the appropriate select lines. Due to the MUX select lines not functioning properly, the final PI PLL design was unable to be properly tested. A solution to this problem is to write a piece of code that reads the MUX line and then determines the proper, 1, 2, 3, or 4 value. M:SJSUEE 227ProjectReport PicturesFigure 18- MUX Model.png Figure 18. MUX Model H. Finall PLL Block and Testing The final design of the complete PLL with the phase interpolator PLL is given in figure 19. As stated in MUX Model section, the MUX line had a critical error that prevented the PLL from being properly simulated. This error was due to the MUX select lines not being of the proper value. If given more time, code would be implemented to resolve this problem or the use of Simulink blocks to generate the proper values for the select lines. M:SJSUEE 227ProjectReport PicturesFigure 19- Final PLL Block.png Figure 19. Final PLL Design with PI For simplicity do to time constraints, a simple test was performed on the final design. Since the MUX select lines are not function properly, a constant value was fed into the select lines to manually pick the phases. When the select line was set to 1 for both, the graph in figure 20 was generated. M:SJSUEE 227ProjectReport PicturesFigure 20- Final PLL Test MUX 11.png Figure 20 PI Output/Feedback Pre Relay Figure 20 shows that the PLL is working to a degree. Unfortunately, it fails to be properly tested. Conclusion PLLs are commonly used devices in a wide range of applications. In this design, a phase interpolator version of a PLL was examined. Although the complete model was successfully constructed in Simulink, the final design was unable to be properly tested. This was due to the malfunction of the MUX select lines that prohibited the simulation to run. A quick work around was implemented, which meant the manual adjustment of the MUX select lines.

Factors Affecting the Choice of Drug Brands by Doctors

Factors Affecting the Choice of Drug Brands by Doctors This research proposal explores the factors affecting the choice of branded drugs in India. Indian pharmaceutical market is unique due the presence of more than 60000 branded generic drugs. The doctors are spoilt for choice of brand. Hence it is important to find out the factors which affect the prescription of drugs to help both doctors and pharmaceutical companies serve patients better. LITERATURE REVIEW INDUSTRY OVERVIEW Pharmaceutical industry in India is now the third largest and 14th largest in the world in terms of volume and value, respectively. The total turnover of Indias pharmaceuticals industry for year ending September 2009 was US$ 21.04 billion with the domestic market contributing US$ 12.26 billion. [1] Due to the expansion of middle and higher middle income groups in the country, a potential US $ 8 billion market of high cost drugs is expected to emerge by 2015. It is also expected that domestic pharmaceutical market will reach US $ 20 billion by 2015. This will make India a lucrative destination for various pharmaceutical giants. Another factor aiding this movement of multinational companies to India is the evolution of low cost drug policy and stagnation of western market. The pharmaceutical industry has grown at the rate of 12 per cent (CAGR) for the past few years, but this will accelerate soon. [1]. India is among the worlds leading five Active Pharmaceutical Ingredients producers. Indian firms produce about 60,000 generic brands servicing 60 therapeutic categories. This is a unique characteristic of Indian pharmaceutical market as compared to the foreign markets where either Researched Brands or generic drugs are prescribed. These different brand names create a dilemma for the medical professionals while writing prescriptions. MARKETING BY PHARMACEUTICAL COMPANIES The general process of selling involving the following steps is also applicable in case of generating required prescriptions. Unawarenessà ¯Ã†â€™Ã‚  Awarenessà ¯Ã†â€™Ã‚  Interestà ¯Ã†â€™Ã‚   Evaluationà ¯Ã†â€™Ã‚  Test Prescriptionsà ¯Ã†â€™Ã‚   Repeat Prescriptions The most cost effective ways of generating interest among doctors and consumers for new drugs are advertisements and public relations techniques. [2] While getting repeat prescriptions requires generation of involvement. Hence majority of spending goes towards direct-to-doctor (DTD) promotion. Among advertising, detailing (visits from sales representatives), direct mail, sales promotion, publicity and public relations, detailing contributes the most for doctors as well as a strategy for pharmaceutical companies. It is the only technique which can be used for all drugs according to Indian FDA regulations. Only Over-the-Counter (OTC) drugs can be advertised publicly in the Indian market. Key findings of research show a high level of interaction between the pharmaceutical industry and the medical profession. 86% receive medical samples frequently 39% receive desk gifts 19% receive invitations to congresses 12% receive free lunches Half of the doctors believe that receiving benefits from the pharmaceutical industry has an influence on medical prescription, but only 27% accept this as influential in their own prescriptions. [3] GIFTS Giving gifts (such as pens to expensive foreign holidays) to doctors is one of the most common techniques used by pharmaceutical companies. These companies are working on relation of reciprocity technique. In country like India, where a lot of importance is given to relationships, doctors on receiving gifts feel obliged to return the favour by prescribing the respective brands. SALES REPRESENTATIVES The main job of Pharmaceutical sales representatives is to convince the doctors to prescribe their products. Along with that they also deal with the channel partners like chemists, wholesalers and even hospitals and other medical service agencies. Hence they have the potential to influence the buying of drugs at every stage. During their visits to the doctors they can customize the product offering based on the doctor profile and the types of patients that consult the doctor. They build relationships with the doctors and leverage it to extract maximum sales from that contact. They use all the selling skills to convince the doctors about the superiority of their products. They also act as the channel for the exchanging information. Many times this involves controlling the information that reaches the doctors as these representatives have become the main source of information about new research and products that hit the market every day. They increase the visibility of their products by continuously reminding and distribution of the gifts related to their products. All these activities influence the prescription habits of the doctors. One of the survey results showed that: 84% of GPs considered pharmaceutical representatives as an efficient source of information 31% said they might change their therapeutic prescribing following visits from representatives [4] ADVERTISING Direct advertisement through mass media is restricted to OTC drugs. These are directed to end consumers i.e. the patients as well as channel partners. These can also be used to impart information without use of particular brand names and to create awareness for public benefit. Many times advertisements become counterproductive by encroaching into the doctors space of providing treatment options creating discontent among doctors. PRICES The concern is that pharmaceutical companies marketing has led to poor people paying for branded products that cost a lot more than the much cheaper generic but have little or no additional medical value. The poor patients cannot afford the original researched brands. Hence the many branded generic drugs fill in the void left by these pharmaceutical companies. The decision is left to the doctors whether the patient can afford the medication or to find out the one which is affordable. Certain patients perceive the effect of costlier drug to be more than the cheaper one. The doctors need to look into the psyche of the patient before deciding which drug to recommend. BRANDING Majority of the doctors use brand names except in hospital setting where the brand is decided by pharmacy. There are various factors that lead to prescription of a branded drug than a generic drug. Brand names are shorter and easier to remember thus get a preference over generic drugs in a prescription. E.g. On given a choice of S-3-aminomethyl-5-methylhexanoic acid (36 letters) or Lyrica (6 letters), it is most likely that doctors will opt for the latter being less complicated. [5] Another common argument for prescribing a brand name is that it avoids patient confusion, as patients are most likely to use brand names for identifying drugs and usually have a poor knowledge of corresponding generic names. [6] Other issues such as the quality and bioequivalence of generic substitutes are often mentioned. Availability, Sampling, Packaging, Continued Medical Education Programme and free disease detection camps are the factors that are to be evaluated upon. RESEARCH METHODOLOGY OBJECTIVES OF THE STUDY To study the factors affecting the decision of doctors while prescribing a product To recommend appropriate marketing strategies to Pharmaceutical companies as per customer needs To explore customer (physicians) needs wants from a pharmaceutical company TIME FRAME The research shall be completed in 8 months time frame (Design and Sampling 2 months, Data Collection 4 months, Data Analysis and Reporting 2 months) SCOPE OF THE STUDY Study is limited to doctors in major cities of India SOURCES OF DATA PRIMARY SOURCE The researcher has to collect data through mail or telephonic interview by getting questionnaire filled up from chosen doctors SECONDARY SOURCE The researcher has to refer to various Pharmaceutical and Marketing Journals, Magazines, Reports websites SAMPLE SIZE 1000 Physicians have been chosen from across major cities in India SAMPLING METHOD Random purposeful Sampling Method 20 Cities have been randomly selected 50 Physicians have been randomly selected from each city Cities chosen are: Delhi NCR, Mumbai, Kolkata, Chennai, Hyderabad, Bengaluru, Lucknow, Ahmedabad, Coimbatore, Pune, Chandigarh, Patna, Guwahati, Bhopal, Itanagar, Raipur, Ranchi, Panaji, Jaipur, Bhubaneswar TOOL OF ANALYSIS Data collected from different sources has to be tabulated. Percentage and Average method has been applied to analyze data. LIMITATIONS OF RESEARCH The Sample size chosen may not be enough to give a true representation of the total population. The research only encompasses metros and A-Tier cities.

Essays --

Volleyball Research Paper For some people, they literally live, breathe, and are volleyball; others do hate the sport and prefer soccer or football (as many do already). But volleyball has been around for more than 100 years! And it is one of the world’s most popular sports; a worldwide estimate of around 800 million people play volleyball at least once a week. But today’s volleyball doesn’t compare with the volleyball that was first invented in 1895. Society has modified to an extent this trending sport the past few decades that some actually think that William G. Morgan, the inventor of volleyball, wouldn’t be able to recognize his own sport. William G. Morgan was an instructor at the YMCA in Holyoke, Massachusetts. Morgan came up with the new idea by mixing parts of other sports like tennis, baseball, basketball, and handball together. The net idea was actually derived from tennis (which is probably why it looks so familiar), however Morgan decided to raise it a little over six feet above the middle of the court; now, the net can be up raised 8 feet above the court due to changes in the game and its rules. Another aspect that wasn’t original is the word â€Å"volleyball†. The game was in fact called â€Å"mintonette† when Morgan first created it but after observing a demonstration game, some scholars approached Morgan with a new name, â€Å"volleyball†, which they found more appropriate to call the name due to the way the athletes volleyed the ball back and forth over the net: hence, the name was changed and has been the same for more than a century. In 1895, Morgan created only one volleyball but like everything else, it has revolutionized into subsets and variations of volleyball such as: Indoor/Outdoor, Newcomb, Beach, Footvolley, Shoo... ... apply to spikes and serves. For body composition, having lower levels of body fat will be an advantage because it could provide more power, better coordination, and possibly better balance. If there were to be an â€Å"excessive† amount of body fat, it is possible that the player’s ability to move around the court freely could decrease and would increase chances of fatigue during the exercise. In conclusion, volleyball is a competitive but amusing sport in which really anyone could participate and could excel in when following the rules and guidelines. Health-wise, it would make a great addition to a daily workout; an average human could burn up to 600 calories during one hour of competitive volleyball! And not only does it burn calories, but it adds a great variety of skill to your coordination and improves cardiovascular and muscular endurance and body composition. Essays -- Volleyball Research Paper For some people, they literally live, breathe, and are volleyball; others do hate the sport and prefer soccer or football (as many do already). But volleyball has been around for more than 100 years! And it is one of the world’s most popular sports; a worldwide estimate of around 800 million people play volleyball at least once a week. But today’s volleyball doesn’t compare with the volleyball that was first invented in 1895. Society has modified to an extent this trending sport the past few decades that some actually think that William G. Morgan, the inventor of volleyball, wouldn’t be able to recognize his own sport. William G. Morgan was an instructor at the YMCA in Holyoke, Massachusetts. Morgan came up with the new idea by mixing parts of other sports like tennis, baseball, basketball, and handball together. The net idea was actually derived from tennis (which is probably why it looks so familiar), however Morgan decided to raise it a little over six feet above the middle of the court; now, the net can be up raised 8 feet above the court due to changes in the game and its rules. Another aspect that wasn’t original is the word â€Å"volleyball†. The game was in fact called â€Å"mintonette† when Morgan first created it but after observing a demonstration game, some scholars approached Morgan with a new name, â€Å"volleyball†, which they found more appropriate to call the name due to the way the athletes volleyed the ball back and forth over the net: hence, the name was changed and has been the same for more than a century. In 1895, Morgan created only one volleyball but like everything else, it has revolutionized into subsets and variations of volleyball such as: Indoor/Outdoor, Newcomb, Beach, Footvolley, Shoo... ... apply to spikes and serves. For body composition, having lower levels of body fat will be an advantage because it could provide more power, better coordination, and possibly better balance. If there were to be an â€Å"excessive† amount of body fat, it is possible that the player’s ability to move around the court freely could decrease and would increase chances of fatigue during the exercise. In conclusion, volleyball is a competitive but amusing sport in which really anyone could participate and could excel in when following the rules and guidelines. Health-wise, it would make a great addition to a daily workout; an average human could burn up to 600 calories during one hour of competitive volleyball! And not only does it burn calories, but it adds a great variety of skill to your coordination and improves cardiovascular and muscular endurance and body composition.

Automobile Ads Analysis - Hummer H3 V8 :: Advertising Branding Analysis

Creative concept: I liked the creative angle that was given to the brand. As a brand with so much emotional capital, it was well employed to create a no-frills ad that spoke little and yet had an impact. A very visually strong ad too. I liked the light balance that has been used, especially on the product. Bold, in- your- face and prestige were the key elements that I feel come across strongly. The headline is very creative, commands respect. If I were to put myself in the shoes of their TA, I would definitely be enticed to go for a test drive or check out the website for more information. The creative concept also banks upon the aura of mystery that it creates with the little information it gives out and the dramatic visual of the product. A good concept that was well Ââ€"executed, for a good final effect. The idea of replicating the black lines on the left hand side of the page, reminiscent of a typewriter is very well done. It lends an old-school feeling to the ad, but also brings in the toughness factor, that is a core Hummer attribute. Layout: The layout of the ad is impressive, attention grabbing and bold. The movement of the eye from the Headline to the tagline and the image is smooth and seamless. It is a bleed layout. Visual: The visual is very strategically placed on the bottom right of the page. The ad features a signature shot of the front grille, dead center, shot from a low angle and angling up. Very aggressively presented, letting the product speak for itself and creating an aura of mystery. It lends prestige and boasts of power for a brand already associated with ‘ruggedness' and as a ‘true-blue off-roader' drive. The lack of color, except black and a little yellowish gold in the headlights is instrumental in giving the car the physical properties of power, no-nonsense and toughness, that could eat up the competition for lunch.. Except for the front bender, the rest of the car is silhouetted in the dark. There is a sort of typewriter feel given to the image. As if it's breaking news being sent out. Headline: ‘The Mountain came to the Alpha.' Creatively, it is a strong statement that complements the image completely. The font is black and big, which works perfectly, off-setting the white balance in the ad.

Cause Of Unemployment Essay

Unemployment is a status in which people are without a profitable job. It has been an major issue in most societies nowadays and is a problem that most countries have been facing and are trying to address. Moreover, when we talk about unemployment, we have to consider the employer and the employee point of view. Till this date there are significant theorical debates regarding the causes, consequences and solutions for unemployment. This essay will focus on causes and effects of unemployment in our society. These days, one of the biggest causes of unemployment is the Global Recession. When a country goes through economic crisis, the consume of goods and services tend to reduce; as a result, many people are being sacked by their companies, in order to reduce costs and confront the crisis. The salary of employees are being fairly reduced and the rate of unemployment is rising day by day, leading to low wages for the people that are in fact employed. In addition, the recession also detracted the young job seekers, the ones out of college, to find a job because most companies can not afford to hire new people. Another important factor is the Technological Unemployment. Technology usualy is more efficient and increases production of a company. Machines do not need vacations, breaks, insurance and can work 24 hours per day (every day); consequently, peaple are being replaced by computers. The output potencial of technology is beyond superior compared to humans, turning the human work impractical and less profitable. Nonetheless, companies do not realise that the way the mechanization rise and display people, fewer people will have money to buy their products becouse of the lack of employment. Additionally, in less developed counties lack of qualified people for certain jobs, result in many companies having vacancies and no one good enough to fill them. To sum up, unemployment is undergoing a sort of cycle, that means when the number of unemployment and the low wages increase, the number of buyers decrease, leading to more unemployment and lower salaries. In addition, high qualification is one of the best ways to the rise the work opportunities. Bibliography Maria. (2008). Unemployment in Global Recession Scenario. StudyMode.com. Retrieve 01, 2013. http://www.studymode.com/essays/Unemployment-Global-RecessionScenario-172794.html Ward, T., et tal. (2009). Low-qualified Workers in Europe. Eurofound.europa.eu. Retrieve 01, 2013. http://www.eurofound.europa.eu/ewco/studies/tn0810036s/tn0810036s_3.htm Wiesen, G. (2012). What Is Technological Unemployment? wisegeek.com. Retrieve 01, 2013. http://www.wisegeek.com/what-is-technologicalunemployment.htm

Homelessness and Vagabond Essay

Vagabonds are normally despised by the society. What happens when they are treated like an intermediate respectable human being is the main(prenominal) theme of this story. Introduction The drop who is practically chased by people is welcomed by an elderly man. In spite of the in force(p) temperament of the old man the throw robs him. He later collapses the gold collect to the good deeds and good-hearted nature of a young lady. Summary The barf sold self make sponsortraps. He made the rattraps with wire which he got by begging in the stores or good-looking farms.At times he utilise to beg and steal, he had a philosophical system of his own the sinless world was a sort of rattrap. People were lured by the variant pleasures of life just as a rat is attracted by cheese or pork. One day he met an old man as he was pursuance shelter for the night. He was given sweltering porridge, tobacco to smoke and they even play cards. The old man showed the honk his cash pouch and the three ten kroner notes. He slept that at the old mans house and the next day he left the house with the three notes.He wandered into the forest for fear being caught for his thie genuinely. He lost his way and finally stumbled into Ramsjo Iron crops in search of warmth and shelter. The owner of the Ironworks mistakes him to be an old friend and took him home. The pad contend along but later quest to go back to the warmth of the forge. The Ironmaster send his girl to bring him back. The gentle and kind nature of the young lady made him follow her. Once he cleaned and shaved, the Ironmaster realized that he was a stranger.He asked the vagabond to leave his house but his daughter wanted him to stay. He ate and slept the entire day. On Christmas Eve the Ironmaster and his daughter went to church. At the church they heard that a vagabond had stolen currency from an old man who had worked as crofter at Ramsjo Ironworks. The young lady became very sad and the Ironmaster was s ure that all his silverish spoons would have disappeared. On their return the piece said that the vagabond had left and he did not take anything along with him. On the contrary he left a small gift for the young lady.The vagabond had returned the stolen money along with a rattrap as a gift to the young lady. He wrote a note thanking her for her kindness and asked her to return the money back to the old man. The money was like bait that drew him to it and he would have been like a rat who got caught in the trap called love of money. Conclusion The author has very good brought the condition of the vagabond. It is important to treat them as human beings and maybe a comminuted love and affection can work wonders in transforming them into honest and sociable people.

A People’s History of the United States

Since the arrival of the Virginians to the New World, they were larger-than-life for labor. The Virginians were unable to start out generous food to stoppage alive. During the winter, they were cut to roaming the forest for nuts and berries and digging up graves to polish off the corpses until five hundred colonists were reduced to sixty. They couldnt thread the Indians to work for them because they were outnumbered and despite their hypernym firearms, they knew the Indians could massacre them.The Indians similarly had amazing spirit and resistance. They would take to die than be controlled by early(a)s. Indentured servants wouldnt suffice because they had not been brought over in competent quantity. Also, indentured servants precisely had to work for a hardly a(prenominal) years to f all in all their debt. Indentured servants eventually assimilated into society, increase the need for laborers. scandalous slaves were the answer, as a trillion blacks had already been brought from Africa to the Lusitanian and Spanish colonies.The first Africans that arrived in Virginia were considered as servants, however were treated and viewed differently from fresh servants. Even originally the slave trade begun, the air black was distasteful. The Africans were viewed as inferior and that was the showtime of racism. It was informal for the face subject the Africans. They were helpless the English separate them from their land and grow and they were no match for the Englishs guns and ships.Africans were captured and move to the coast where they were kept in cages until they were picked and sold. Then they were packed aboard the slave ships in spaces that were no bigger than coffins. The combination of desperation from the Jamestown settlers, bar of using whites and Indians as servants, the availability of Africans and their helplessness make them the ideal candidates for enslavement. They were the outcome to the settlers problems.Tabaco, cotton, and dirty money groves made the colonies highly wealthy however, there evidently were not enough whites to meet the need of the plantations. So as the plantation system grew, slavery grew. The slaves were taught to be insubordinate. They endured hard labor, musical interval from their families, and the power of law, allowing them to be penalize physically. And thus the beginning of slavery and the drawing of the racial line.A tidy sums History of the coupled StatesHoward Zinns A Peoples History of the United States appears to be unique as it presents historical events from the perspectives of the poor, minorities and dispossessed.The expeditions of Christopher capital of Ohio to northmost America, as Zinn had presented, resulted in the appalling genocide and growth of Carribeans indigenous peoples (only few Americans have knowing such in school and most historians guide to overlook) (Zinn, Howard 1980).Zinn viewed and presented capital of Ohio as the oppressor. From the beginning of the expedition, Columbus had think to extract wealth from the natives. He demonstrated Columbus malevolent motives as he quoted the latters words upon encountering with the Indians They brought us parrots and balls of cotton in fill in for the glass beads and hawks bellsThey would clear up fine servantsWith fifty men we could subjugate them all and make them do whatever we want (Zinn, Howard 1980). Indeed, this is raise that from the beginning, Columbus had been eager to assess the exploitability of the native inhabitants.Furthermore, Zinn excessively described the nobility and innocence of the natives and had proved that Indian culture treated its women well using the adjacent quotation from a Spanish priest who was with Columbus Marriage laws are non-existent men and women alike subscribe their matesIndian men and women look upon primitive nakedness with as much casualness (Zinn, Howard 1980).Personally, Zinns presentation of historical events with respect to Columbus unearthly motivations varied from other historians. In the case of other historians (like Marshall) for instance, they took Columbus desire to evangelize the natives with seriousness as if they are willing to take these statements at submit value while Zinn, dismisses them by saying He was full of religious talk (stated on scalawag 3).Work CitedZinn, Howard (1980) A Peoples History of the United States Columbus, the Indians and Human Progress edited by harpist Collins (2003) BookA Peoples History of the United StatesSince the arrival of the Virginians to the New World, they were desperate for labor. The Virginians were unable to grow enough food to stay alive. During the winter, they were reduced to roaming the woods for nuts and berries and digging up graves to eat the corpses until five hundred colonists were reduced to sixty. They couldnt force the Indians to work for them because they were outnumbered and despite their superior firearms, they knew the Indians could massacre them.The Indians also had amazing spirit and resistance. They would prefer to die than be controlled by others. Indentured servants wouldnt suffice because they had not been brought over in sufficient quantity. Also, indentured servants only had to work for a few years to repay their debt. Indentured servants eventually assimilated into society, increasing the need for laborers. Black slaves were the answer, as a million blacks had already been brought from Africa to the Portuguese and Spanish colonies.The first Africans that arrived in Virginia were considered as servants, but were treated and viewed differently from white servants. Even before the slave trade begun, the color black was distasteful. The Africans were viewed as inferior and that was the beginning of racism. It was easy for the English enslave the Africans. They were helpless the English tore them from their land and culture and they were no match for the Englishs guns and ships.Africans were captured and se nt to the coast where they were kept in cages until they were picked and sold. Then they were packed aboard the slave ships in spaces that were no bigger than coffins. The combination of desperation from the Jamestown settlers, difficulty of using whites and Indians as servants, the availability of Africans and their helplessness made them the ideal candidates for enslavement. They were the solution to the settlers problems.Tabaco, cotton, and sugar plantations made the colonies extremely wealthy however, there simply were not enough whites to meet the need of the plantations. So as the plantation system grew, slavery grew. The slaves were taught to be insubordinate. They endured hard labor, separation from their families, and the power of law, allowing them to be punished physically. And thus the beginning of slavery and the drawing of the racial line.