Sexism - Social work Essay Example | Topics and Well Written Essays - 1000 words

Sexism - Social work - Essay Example Religious writings the date back two thousand years ago illustrate how women were thought to be of no essence. 1 Timothy 2:16 â€Å" I permit no woman to teach or have authority over men. She is to keep silent.† Thus, the term sexism has been far more associated with discrimination against females. When society began to depict the roles of men as heads of nations and kingdoms, pioneers of expeditions and discoveries, brave heroes of war, engineers of technology and infrastructure, great thinkers and philosophers, etc., it unconsciously instilled prejudicial thoughts -- that there exists an inferior gender, the female gender. In the years to come, the â€Å"battle of the sexes† would not be limited to the male and female genders but to the transsexuals as well. (Wikipedia: The Free Encyclopedia, 2007) The rise of the feminist movement which began in the late 19th century of the western society was a result of years of suppressed freedom, restlessness, frustration and oppression. As women were labeled by men as the â€Å"weaker sex,† they were denied access to education, suffrage, political representation, employment and equality under the law. The clamor for change and equality became a resounding battle cry of the feminist movement. They protested about double standards dictated upon by society in which, they argued, were exclusively favorable to men. It is not surprising then how the movement has evolved through modern times. When once their sole purpose was focused on creating equal opportunity for women, they became hungry for dominance and authority by suppressing men and propagating negative views about them and thus, have become instigators of sexism as well. Transsexuals are also victims of sexism. They have been openly criticized as having gender identity disorders which are psychological in nature. They are often the recipients of verbal abuse and have been labeled as fags,

Investments Essay Example for Free

Investments Essay Checking account is a type of investment to manage personal finances that has both advantages and disadvantages. The primary advantages of checking are to save fees charged by storefronts that offer check cashing services and easy accessibility to funds by writing on checks compared to carrying cash. The disadvantages of checking accounts are overdraft fees when the balance is less than the maintaining balance and less security than ATM cards since it only requires a signature. Money market account offers advantages to account holders to hold emergency funds and money for periodic payments. A higher rate of interest is also offered compared to other types of accounts. Its disadvantages are limited transactions to only 3 deposits and 3 withdrawals every month; potential investment loss since only $250,000 is insured by FDIC; unguaranteed interest rate due to fluctuation; risk of spontaneous spending due to easy accessibility; and risk of withdrawing funds leading to a minimum balance especially when the account is tied to a checking account. Passbook savings account offers the advantages of safety as covered by U. S. federal government insurance companies (FDIC and NCUSIF); immediate access to funds based on the needs of the account holder; and it offers a fairly small interest. Its disadvantages are the limitation on federal insurance of a maximum of $250,000 coverage and the lowest interest rate of passbook accounts compared to all types of savings account. The interest also is subjected to tax returns for the depositor. Certificate of deposits additionally has advantages and disadvantages. It offers flexibility of the terms starting at three months up to five years or more. It means the longer the term, the higher interest rate the depositor will receive at the end of the term. Another advantage is the grace period it offers. Depositors are given commonly a seven-day period to come to a decision whether to extend the term or not. Its disadvantages are the interest rate is fixed, penalty fees when the deposit is withdrawn before maturity date, and automatic rollover when the depositor missed to make a decision on or before the grace period.

Zero Tolerance Essay -- School System Education Discipline Essays

Zero Tolerance   Ã‚  Ã‚  Ã‚  Ã‚  There are many disciplinary actions that have been used and are still in use in order to deal with problems in the school system today. However, it seems that zero tolerance is now the most widely used and most controversial policy that has came into effect. Zero tolerance means absolutely no mercy for students when accused of doing something wrong. This policy leaves no room at all for error. These cases are not judged for their individual qualities. They are all treated the same regardless of the circumstances.   Ã‚  Ã‚  Ã‚  Ã‚  When zero tolerance is thought of, it seems like a very practical way of dealing with the problems that we face everyday in the school system. However, we then have to ask ourselves if it is fair to give all â€Å"offenders† of a crime the same punishment without looking at the circumstances of each case. There have been many cases of zero tolerance use that shows just how unfair this policy is. An example of the misuse of zero tolerance is this; a student was kicked out of school for writing a paper that involved guns. This paper said nothing about harming anyone but the student was still kicked out. Is this to say that by having the word â€Å"gun† in my paper that I will be kicked out of school too?   Ã‚  Ã‚  Ã‚  Ã‚  Zero Tolerance has a very good literal appeal. Parents and some students alike are happy to have this disciplinary action. However, zero tolerance would not have stopped the school shootings that have recently plagued the country. A recent po...

Southern Gothic Fiction

Sean Tinsley Eng 151C-33 3/08/2013 Southern Gothic Fiction is a genre of literature unique to the American south. Major influences of the genre itself were the culture, religion, and economic standing of the south at the beginning of the 20th century. Many who read southern gothic are transported into a grotesque fantasy world where ideas of death, good versus bad, and god are all prevalent. Many American authors were greatly influenced by the ideas of southern gothic literature such as â€Å"Harper Lee, Flannery O’Connor†¦William Faulkner, Truman Capote, and to a lesser extent, Eudora Welty. (jenksps. org) The culture of the south is riddled with strong beliefs in different sects of Christianity; mainly Presbyterians and Baptists with a passionate group of Evangelicals as well. Because God plays a large role in most southern gothic literature, the idea of morality is also of huge importance. Many protagonists will be juxtaposed by a moral less antagonist; usually the ep itome of evil. Along with that comes the idea of a crumbling landscape; desolate almost. I believe this represents how the south was struggling economically at the time due to the crumbling of the antebellum era. jenksps. org) For this essay, I chose to analyze â€Å"This Is the Only Time I’ll Tell It† by Doris Betts. This story hits all the main topics of southern gothic literature; the idea of death or the grotesque, the concept of good versus bad, and God as well. The concept of good versus evil drives the overall moral of the short story â€Å"This Is the Only Time I’ll Tell It†. In fact, this theme provides the first instance of conflict. The narrator, a man by the last name of Coney, describes to the reader a woman, Zelene, who noticed a disturbance at the Jamison household.Upon further investigation she noticed Tom Jamison trying to drown his nine month old baby girl. Fortunately, she saved the baby and â€Å"when she had brought back breath and s creams, Zelene opened her clothes and fixed that naked baby flat against her naked breasts and†¦ran yelling into my store. †(Christ Haunted Landscape, 232) Shortly thereafter, Zelene grabs one of Mr. Coley’s axes of his shelf and simply states, â€Å"I’m going back and kill him[Tom Jamison]. †(Christ Haunted Landscape, 233) Mr.Coley made no objection to her claim, and when she didn’t find him, he noted the other 20 townspeople who â€Å"had been heard to declare it was a shame Zelene had not drove home her ax. †(Christ Haunted Landscape, 233) The interesting take on good versus evil shows itself in the characters’ response to unspeakable crime. All the townspeople were upset Tom Jamison hadn’t been brutally murdered. The attitude of the characters towards him, including Mr. Coley, fester inside them throughout the remainder of the story ultimately culminating in Mr.Coley killing Tom Jamison with an ax upon his return to the store; the irony being that it was inside the store when Zelene first said she would kill him. Because the justice for the unspeakable crime of attempted murder on a baby was carried out by a normal citizen, this speaks highly for the overall theme. Although other elements of southern gothic fiction are prevalent in â€Å"This Is the Only Time I’ll Tell It†, good versus evil, and, more importantly, how evil should be treated, is the engine that drives this story. God, the uniting or divisive factor in the south, also plays a huge role in the story.More importantly, the difference between what is deemed moral in God’s eyes, and what the characters perceive as justifiable sin. Mr. Coley mentions the town’s resistance to telling the truth about the next of kin. â€Å"But we had 37 lifetime Presbyterian mouths gone flat against their teeth until judgment day†¦Ã¢â‚¬ (Christ Haunted Landscape, 233). The way a person believes in God is also important in this short story. For Mr. Coley, Baptists are a bit weaker than his people, Presbyterians. â€Å"My wife’s people, Baptists, are a lot more soft-headed; one of them would have read his Commandments wrong and weakened someday. (Christ Haunted Landscape, 233). There were many grotesque and macabre aspects of this short story as well. For example, the first point of conflict deals with the attempted murder of a nine month old baby. Secondly, the way Tom Jamison was murdered, brutally by ax, would churn most people’s stomachs. Also, a valid point could be made that Zelene is grotesque. She is described as â€Å"pitiable herself. She was 38, and built like a salt block. † (The Christ Haunted Landscape, 233). She was not entirely attractive, by any means, and she lived in relative squalor compared to the rest of the townspeople. This is The Only Time I’ll Tell It† is a perfect example of southern gothic literature. First of all, the overall theme of the story was good versus evil, and what should be done about it. Secondly, the aspect of what should be done with evil is related directly to the characters’ views on God, and the morals they’ve received from Him. Last but not least, it was overall creepy. To imagine a man trying to kill his nine month baby is enough to put fear into anyone’s heart. Although there are frightening parts to it, the story does a good job of making the reader ask themselves what they would do in Mr.Coley’s position. The answer to that problem also relates directly to the audience’s religious views. Whatever God they may believe in, good versus evil is always prevalent, and that is why this story connects with many people. So, what would you do? Would you strike a man down for a crime that happened over 16 years earlier? Could you? These questions create intrigue in the reader, which is why this short story is so popular today. http://www. jenksps. org/pages/uploaded_files /CAMPsouthern%20gothic%20elements. pdf The Christ Haunted Landscape

Walgreens structure

Walgreen has faced over the past two years are changing their brand and the process needed to make that change. We can see that Walgreen has made some good decisions over the years . This is evident by the fact that there are still many Walgreen stores across the country and they are continuing to build new ones every year. If we take a look into how they made such crucial decisions we will find them using good decision making techniques such as predetermination's evidence, and good old fashioned Intuition.The first element we can find within Walgreen decision making process Is rainstorm. We can see that before changing the brand from old to new the mangers In the higher ranks of the corporation all got together and started throwing out Ideas. They did some research and based upon fact they made educated guesses on what may work and what probably would not work. The managers of Walgreen TLD a fantastic Job with their research and brainstorming. Walgreen wanted to stand out among thei r competition so In order to do that they had to know what the competitor was doing.It seemed the competitor was not much different from Walgreen. This is where we see the brainstorming really become effective. The managers began to come up with ideas on how to make the stores an experience instead of just a cash and carry drugstore. They really used the tools of good decision making to begin the process of changing the brand for good. Second we can look at the gathering of evidence. Walgreen knew if they were to be different then they had to study their competition. The head honchos did their homework well.They gathered information from research and surveys and listened to the customer needs. They not only listened they decided to take a chance and build their new brand on the customer experience. Now we have seen a company go from a rational model of decision making and step into the new age. They admitted that old manager models were out dated and they were ready to step into a f resh new approach. It is interesting that we see them heading into a very modern direction but using old fashioned decision making techniques to arrive there.Walgreen management team took their job seriously by making sure they followed through with pouring over statistics and studying successful companies with different brands than their own to see what was giving them the success. They decided that it Just had to be the customer service levels and the approach. Surprisingly enough we can also see the big bosses at Walgreen using their Intuition to make the final decision on whether to change the brand or not. They are customers at other places and they take their family and friends out to eat and do different things.When out and about they kept track of what businesses were full and why. If they went out to eat and there was a two hour wait they would pay close attention to why. This process gave them the Intuition, or experience to know what or how a person wants to be treated wh en they are spending their money with a company. They brought their Intuition to the drawing room and along with good brainstorming and gathering of evidence, the management staff of Walgreen was able to make a good business decision.We sometimes see ethics compromised when decisions are made and Walgreen is not a when they admittedly failed to control the sales of controlled substances in a few of its pharmacies. The effects of this could have ruined the company but lucky for them they were able to pay a hefty fine and shut the door on what could have been an ethical disaster for them. It seems the Federal government agreed to dismiss the ease when the fines were paid.

Photo-Montage

Tips for Creating a Better Script for Video/Photo-Montage Although I am a writer, I am also a Voice Talent for webmercials, e-learning, and audiobooks. This week, I have been hired for a real-estate agencys web video, and find myself in a common situation: The person creating the script is not familiar with writing for this medium. Hence, I created a how-to, useful whether you are creating a video-trailer for your book or writing for a corporate website! * TIME (step one) Watchable time is 3 minutes, and most quick web pieces are less. Three two-minute pieces are better than one 6 minute piece; most people click away at 1.5 minutes. 200 words is around 1.5 minutes, so aim for 200-350 words. With that in mind, write down EVERYTHING that you think is important. Read aloud at a medium pace, and time it. Your written piece is probably five minutes. Now prioritize what you think is important, and write those concepts down in bullet form. Note if you like a certain tone (Cheery? Mellow? Dramatic? Authoritarian? Snarky?). * IMAGES (step two) Ask yourself: ==Do I have images for each of my bulleted ideas? Make a note next to your bullets of how many images you have for each and what they look like. Yes, you can write an image into more than one category- although you will not SHOW the image twice, writing it in two places gives you placement options. If there are ideas WITH NO IMAGES, then you need to get some OR decide to use written text (like â€Å"Comes in red as well†) OR save that idea for a later project. ==Do I have enough images for a whole sentence? This is a biggie. Watchable time for each image is 2-3 seconds. Lovely long compound sentences do not work, nor do sentences where the main object or verb is at the end of the sentence - people need to hear information that explains, modifies, colors what they are seeing. ==Which images are strong and should be first? I know it seems bass- ackwards to think about how it looks rather than what you want to say, but this is a visual medium first and foremost - your message is embedded in the images, not the other way around. ==What if I am having a video/photo professional create my images or use my existing images to decide which goes where? Highly recommended. HOWEVER, you should still have a notion of what KIND of images best show your idea and what kind of image might be a most-compelling initial visual! * SEQUENCE (step three) Start and end with the strongest images. Which ideas do they match on your bullet sheet? You may have to do some realigning of ideas and images, and that is okay. The strongest image/concept-clump is now first. What should come next? The second section is often a lesser point. In general, organize your sequence with main points separated * SCRIPT! (step four) Remember- SHORT AND SWEET. How can you talk about your ideas beautifully, dynamically and succinctly? Remember, each slide will only be 2 or 3 seconds and that your total time is 1.5 to 2.5 minutes. Now touch base with your visual artist (if you have one). As an expert in the visuals, s/he will tweak your concept to give the piece have your tone and tell an interesting story. * REVISIT/REVISE (final step) Your video-photo person will send you the piece for alterations. Send back your thoughts with any script changes, then wait for the final awesome project!!

Living By Number Essays

Living By Number Essays Living By Number Essay Living By Number Essay Living by Number Summary MarineCorp was the maritime solution provider for the SORIA group of companies. It had two subsidiaries which are Green Port Sdn Bhd and Sungai Emas Port Sdn Bhd. Hafiz Hasyim is the person who is responsible to report financial performance in the company. He is one of the Boards which is CFO in organizational structure for the three companies. Besides, Vessel inspection and vetting was a major business of MarineCorp. MarineCorp also provide consulting services to SORIA and its related contractors that included those for newly built vessel for upstream and downstream il and gas operations. For Green Port, it major activities included pilotage and marine support, emergency response, port management and operations, navigational safety, and marine services to the Single Buoy Mooring facilities. Last but not least, Sungai Emas major activities included pilotage and marine support, emergency response, port management and operations, and navigational safety. Protagonist/ Decision maker Hafiz Hashim, the Chief Financial Officer of Marine Corp Sdn Bhd and responsible for the financial management of MarineCorp and its wholly-owned subsidiaries which re Green Port Sdn Bhd and Sungai Emas Port Sdn Bhd. Problem There are some problems that Hafiz face during this financial performance which is he in dilemma situation whether to approach economic earnings that has required by SORIA group, Value Based Management (VBM) or use profits as practised by the company(Marine Corp Sdn Bhd) and its subsidiaries to report financial performance. Also, the Chairman requested specifics action that can improve companys performance due to financial performance. Other problem faced by the protagonist is pressure from the General Manager of Green Port and also Marine Corp Sdn Bhd here they want to have better performance so they can get higher bonuses. GM Green Port, Anita Osman requested to amortise the dregging cost because Hafiz miscalculated them while GM Marine, Lee Chong Way refused to propose the dividend to the shareholders because of the cash already spend to fund investments. There are also certain accounting issues that arise that give pressure to solve it. The Major Issue The major issue occurred when there are two types of opinions that Hafiz has to consider. First is the opinion president of Suria Group so that Value Based Management (VBM) to be used for the SORIA Group and all its subsidiaries and associated companies. Secondly, for the current situation the MarineCorp and it subsidiaries are practicing profit base to measure the company performance. Besides, General Manager (6M) of Green Port requested to change dredging cost by amortizing it. Another issue occurred also in Marine Corp while the GM of the company refuse to propose dividend to their shareholders and use cash to generate interest income on fund investment. Case Exhibits From Appendix G it shows the companies NOPAT, Average Invested Capital and Weighted Average Cost of Capital (WACC) and from these components the performance for each company can be measured. Under the VBM model, both economics earning for Sungai Emas and MarineCorp are positive which are 5,030,563 and 14,274,611 thus its shown that these company are creating value for their company. In the other hand, economic earning for Green Port is -14,588,232 (negative) and this indicates that value was destroyed for the company. Besides, under profit based the Green Port company shown the most profitable company compared to Sungai Emas and MarineCorp when the net profit after tax for the Green Port is the ighest among them. Question 1: Determine the economic earnings of the MarineCorp Sdn Bhd, Green Port Sdn Bhd and Sungai Emas Sdn Bhd. Because the president of SORIA wants to use the Value Based Management (VBM) system, the company would be measured by economics earnings. The table above show economic earnings for each company. Green Port will have negative economic earnings while the other two will have positive economic earnings. Positive economic earnings means that value was created for the company and investment should be done in this company because it provides higher return han the cost of capital. Negative economic earnings would mean than the value of company was destroyed and investment should be avoided from this company because it illustrate that the company failure to provide higher returns than the cost of capital. Question 2: Rank the companies in terms of their financial performance. Measurement Marine Corp Sungai Emas Green Ranking Economic profit Net profit after tax 5,841 ,524 2770,609 Profit margin 28. 89% 24. 03% 28. 46% Current ratio 2. 47 2. 96 1. 13 ROA 70. 57% 26. 94% 5. 56% Based on the Tablel . 1, we have decided that Marine Corp Sdn Bhd has the best inancial performance compare with others two subsidiaries; Sungai Emas Port Sdn Bhd and Green Port Sdn Bhd. Even Green Port has the larger profit based but actually the company has destroy value if we calculate with the Value Based Management (VBM) as requested by the group SORIA. The value was destroy maybe because of the net operating profit was include the higher dredging cost that has been spend which is the amount that General Manager Green Port, Anita Osman want to amortise the cost to ensure that the company gain profit. Moreover, the Green port also had inancial charges while the other two companies did not have financial charges. In fact, the amount for profit based and economic earnings is differ where the amount of profit decrease. In term of ratio, profit margin shows that Marine Corp is the higher percentage which 28. 89% and follow by Green Port. However, Sungai Emas Port has lower profit margin, 24. 3% but the company has higher current ratio where is means an indication of a companys ability to meet short-term debt obligations or the possibility the company can pay debts because of Sungai Emas Port has higher urrent assets and lower current liabilities. Green Port has the lower percentage to pay the debt only 1. 13. Return on Assets (ROA) tells an investor how much profit a company generated for each dollar of assets. The higher ROA, more investor want to invest in the company. So it gives good impressions to the company. Marine Corp has higher ROA with 70. 57% followed by Sungai Emas Port 26. 4% while Green Port only 5. 56%. Overall, Marine Corp Sdn Bhd has better financial performance compare to other companies even current ratio Sungai Emas is higher than Marine Corp but the different is not too large. Marine Corp still can pay the debt. Follow by Sungai Emas Port Sdn Bhd and lastly Green Port Sdn Bhd. Question 3: In your opinion, why are the General Managers Green Port Sdn Bhd and MarineCorp behaving in such manner? In my opinion the reasons why the General Manager of both MarineCorp and Green Port behaving in such manner are self interest and stakeholder perspective towards their company. First scenario is when Anita Osman who is the General Manager of Green Port asks Hafiz to change the dredging by amortizing it. Basically, amortization is a method of recovering (deducting) certain apital costs over a fixed period of time. It is similar to the straight line method of depreciation. According to Win Mark Business solution, the amortization only applies to expenses incurred after you decide to establish a particular business and before the business actually begins operation. It applies not to all expenses. Some of them such as advertising; salaries and wages paid to employees who are being trained; travel expenses incurred in lining up prospective distributors, suppliers, or customers; and salaries and fees paid or incurred for executives, consultants, or imilar professional services. It does not, however, apply to expenses that would not be deductible if incurred after you start the business. In this case, the dredging cost exists under this category. It cant be amortize when it has incurred. It will violate the accounting principle of prudent. Furthermore, the financial statement would not give a true and fair when the cost is understated because of the amortization. When Anita decided to amortize the dredging cost, the total expense would decrease. This condition will lead to the higher profit even though from the reality view it is not. When the profit is higher, thus the performance of the company is viewed as excellent. As the company performance is good, the bonuses for the General Manager which is Anita Osman would increase. In case of General Manager of Green Port, Lee Chong Way refuses to pay dividend to shareholder. In his point of view, generate interest income on fund investment is better than giving away dividend to shareholder. The reason is market analysts worldwide are ranking companies by looking at the profit of the company. Moreover, the investor will attract to invest in the company that having ability to generate higher profit. The higher the profit, it is mean the company is the top company. Besides, when the company is in excellent rank, the pleasure will be credit to Lee Chong Way who is the General Manager. The conclusion is the evaluation of general manager is based on the company performance. Question 4 What action can be taken to improve future performance of Marine Corp and its two subsidiaries? Prepare a report of your recommendations to be presented the chairman of the board. Based on analysis that we handle, it seems that company needs to improve their performance to sustain development in the future. It is due to poor management in handling economic earnings of the one of subsidiaries in the company. We would suggest some recommendation to the chairman, firstly; mission, vision and goal of a company would be the most important determination the establishment of the company. However the organization of the company (chairman) has to review back this goals, mission and vision and remind the entire organization so that they would not go far from the objectives and improve the performance of the company. Next, think strategically and identify key metrics. In fact, you cannot manage what you annot measure. It is important to recognize and having a very systematic plan for the next two, three, five and even ten year ahead in the future and how you will measure the performance. Besides, your company should create balance score card to your strategic performance. The Balanced Scorecard provided four frameworks that a company should be identified. There are financial, customers, innovation and growth and internal process. To summarize in easy to understand language: What are the key drivers of profit and performance from all the key areas of the organization? Long term profitability comes from understanding how key variables in the organization are interrelated. To increase long term profitability your company must determine what variables drive that performance. In addition, pay attention to best in class which is set up your benchmark. Even in a life of person, there should have a benchmark to make sure his life focus to achieve something. Same goes to a company. How do we stand up to the best in class? When benchmarking, as with the balanced scorecard, it is important to benchmark many facets of the company not just company profits and product performance. What are their customer service policies, product quality, and reward? Remember benchmarking is a fast track to high performance and profitability. This was Toyotas approach when they started. They are profitable enough that they could own the big 3 American motor companies. Moreover, the recommendations that can give to improve the companies is conduct research for example, when you need specific information and prospect that does not exist conduct your own primary research rather than copied others. When the company conduct the research, they can ensure the accuracy of their findings. In ddition, the companies should implement the SWOT analysis to measure their strength and weaknesses (Strength, Weakness, Opportunity, Threats). Other areas that need to be focus more is welfare of the employees where the manager has to meet employees welfare such SOCSO, EPF and others so that they can give fully commitment to doing their Job accordingly. By doing so, it can maintain professionalism and motivate labour forces. Besides, the companies should appoint employee that fulfil the requirement that have been set by the companies. It is because these employees are the key factor that will determine successful of the ompany. On the other hand, selections of best employees can avoid the company to have higher turnover. Furthermore, the company should focus on stakeholders retention because getting a new customers is five time more expensive than retaining a current one. So the company must provide better service to have customer satisfaction. In term of shareholders, the companies must delivering on advertising promises and develop return policy that with satisfied both parties for instance pay dividend to the shareholders. This situation might affect investment in the future as shareholders give their trust and confident to the company.

Political Party Ads - Who Pays for Them

Political Party Ads - Who Pays for Them Finding out who pays for political party ads in election season can be tricky. Candidates and committees who purchase political party ads on television and in print are required to disclose their identities. But often times those committees have vague names such as Americans for Prosperity or Americans for a Better Future. Understanding who contributes money to those committees so they can buy political ads is an important function of democracy because the ads play such a large role in elections. Are they conservative or liberal in political philosophy? Do they have a special interest or issue they are trying to influence? It is sometimes difficult to discern what a committees motives are just by watching or reading political ads. Who Pays for Political Party Ads Generally speaking, there are several types of groups that pay for political advertising. They are individual candidate election campaigns such as those for President Barack Obama or 2012 Republican presidential nominee Mitt Romney; political parties such as the Democratic National Committee and Republican National Committee; and political action committees or super PACs funded by industries and special interests. Some of the largest special interests in American politics are abortion and gun-control opponents, energy companies and senior citizens. In recent years, though, super PACs have emerged has powerhouses in the electoral process. So have 527 groups and other organizations who seek to exploit weak disclosure laws and spend so-called dark money. How to Tell Who Pays for Political Ads It is easy to tell when an individual political candidate or political party buys airtime for ads. They will disclose their identities, often at the end of the ad. Typically, the wording is This ad was paid for by the committee to re-elect Barack Obama or I am Mitt Romney and I approved this message. Political action committees and super PACs are required to do the same, but they are not required to provide a list of major contributors or identify their special interests on the air. Such information is available only through the committees own websites or through Federal Election Commission records. Those records, called campaign finance reports, include details about how much a political candidate or political party is spending on political ads. Disclosure Controversy Political action committees and super PACs are required by law to list their contributors in disclosures filed regularly in Washington, D.C. Such information can shed light on whether those super PACs are conservative or liberal in nature. But some super PACs exploit a loophole in reporting laws not addressed in the legal case that led to their creation, Citizens United v. the FEC. Super PACs are permitted to accept contributions from nonprofit groups classified as 501[c][4] or social welfare organizations under the Internal Revenue Service tax code. The problem is that under that tax code, 501[c][4] groups are not required to disclose their own contributors. That means they can make contributions to super PACs in the name of the social welfare entity without having to disclose where they themselves got the money. Attempts to close that loophole in Congress have failed. Greater Transparency The Federal Communications Commission requires television stations that get paid to broadcast political ads to keep a record of who bought airtime. Those records are required to be made available for inspection to the public at the stations. The contracts show the which candidates, political committees or special interests are buying political ads, the length and target audience, how much they paid, and when the ads aired. Beginning in August 2012, the FCC also required television stations to post online all contracts with candidates, super PACs and other committees buying airtime for political ads. Those contracts are available at https://stations.fcc.gov.

Samsung Product Portfolio Assignment Example | Topics and Well Written Essays - 2000 words

Samsung Product Portfolio - Assignment Example In the home appliances category, it produces cookers, ovens air conditioners, refrigerators, vacuum cleaners, and dishwashers. It also manufactures TVs, Speakers, Home theaters, TV/ audio/ video accessories, air track a, d Blu-ray. In the vast and growing area of information technology Samsung provides it consumers with mobile phones and, tablets, PC/ peripherals and printers, as well as, memory and storage devices. These items are produced in various and distinct models to meet the consumers requirements. For instance, Samsung India produces products for the middle and lower classes and provides them at a cheaper price (Krishnamacharyulu & Ramakrishnan, 2012). It achieves this by substituting different parts of a product with cheaper but durable material. Consequently, the company sells more electronic units at a cheaper price in India which is profitable for the company based on the low investment involved. Similarly, Samsung makes different models of phones to suit the needs and costs of its consumers. In Africa, there is a large demand for mobile phones for the purpose of communication. The large population of lower class consumers does not require phones that have sophisticated applications. Consequently, Samsung makes simple models for mobile phones to provide for this market. Nonetheless, it also provides smart phones with innovative technology for the same locations but for a different class of consumers. Samsung electronics is the most conglomerate among consumers. Any product development or investment should be made in the department. Samsung Electronics’ vision is becoming a globally recognized business leader by developing innovative technologies and enriching people’s lives. Its internal environment is designed to achieve this purpose. The company has a management structure that supports diversity.

Foreign Policy Conflict Between Hamiltonians and Jeffersonians in Term Paper

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How free is the free market - Essay Example The first example which comes to mind is the labour market and western democracies such as the UK and the US pride themselves on being welfare states which regulate how the labour is governed (Chomsky, 1996). However, this governance and control may have political objectives as described by Adams (2002). Unemployment becomes an important question for governments therefore they may try to maintain low unemployment figures with the regulation of the labour market (Sloman, 2004). In essence, what should have been a free market in an economic system is turned into a controlled market. It could be asked why a system which promotes the idea of a free market as described by Adam Smith and many others who came after him actually seeks to regulate labour at all? The notions concerning the acceptance of a free market and competition between individuals seem to run counter to labour regulations and minimum wage laws (Chomsky, 1999). The answer given to solve this apparent disjoint is that regulations are supposed to protect people from those who may exploit them. For instance, without proper regulations created by the government bodies the labour market could become imperfect as factory owners could be unfair to the labour they have employed (Botero et. al., 2004). Richardson (1999) says that, â€Å"regulation of the labour market has been a feature of Western economies since it was proposed as an amelioration of some of the worst abuses of workers experienced during the Industrial Revolution (Richardson, 1999, Pg. 1)†. Undoubtedly, the situation during the Industrial Revolution meant that mill owners could treat their labour as they wished no regulatory controls existed on wages or work hours. The situation might be not have changed much today had there been no control on the market even though writers such as Chomsky (1999) suggest that the neoliberal agenda allows the exploitation of

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Sir Richard Rogers Lloyds Building Essay Example | Topics and Well Written Essays - 2500 words

Sir Richard Rogers Lloyds Building - Essay Example This building, started in 1979 but not completed until 1984, is a complex combination of both Modern and Postmodern ideals that manages to evade allowing either framework to dominate. A basic description of the building indicates a tall structure with the unusual feature of having its service features exposed to the exterior and utilized as a decorative element. This follows the Modernist movement in its focus on the mechanical elements of the structure while it also reflects the postmodern element of everything being in a constant state of flux. The building was originally designed to serve as the corporate headquarters of a large insurance firm and is erected in the center of London’s financial district. This context illustrates the importance of its design as a means of reflecting the higher monetary, capitalistic values of the community and thus much in line with the Modernist ideals of the era. However, the building was also required to be highly flexible to be able to ac commodate perhaps as yet unknown technologies and to adapt to often changing uses, thus reinforcing the concepts of Postmodernism. As the following investigation will prove, though, the building itself, in its focus on mechanics and materials, falls more within the realm of the Modernist movement while its means of addressing the concerns of the times and the context incorporates the values and ideas of Postmodernism. The concepts of the Modern approach focus upon the assumption that everything can be classified into specific categories and definitions. â€Å"Modernity is a project, and not only a period, and it is, or was, a project of control, the rational mastery over nature, the planning, designing and plotting which led to planomania and technocracy† (Beilharz, 2001: 6). Emerging as a product and reaction to an increasingly mechanized world in which standardization seemed inevitable; the basic

Ethical Case Scenario Development Assignment Example | Topics and Well Written Essays - 250 words

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Language acquisition Essay Example for Free

Language acquisition Essay Psychological principles of SLA form the foundation stones for building a comprehensible understanding of the acquisition of the linguistic system. The studies was centered on the contrasts between the native lang and the target lang (contrastive analysis) and the effect of the native on the target lang (cross linguistic influence). 1-The contrastive analysis Hypothesis It’s the study of two languages in contrast. Based on the behavioristic and structuralism approaches, it claimed that the principal barrier to SLA is the interference of the FL system with the SL system, and that a scientific, structural analysis of both lang in question would shield a taxonomy of linguistic contrasts between them which in turn would enable the linguist to predict the difficulties a learner could encounter. This would enable the linguist to accurately describe the two langs in question, and to match those two descriptions against each other to determine valid contrasts between them. Behaviorism contributed to the notion that human behavior is the sum of its smallest parts and components, and therefore that lang learning could be described as the acquisitions of all of those discrete units. Moreover, human learning theories highlighted interfering elements of learning, concluding that where no interference could be predicted, no difficulty would be experienced since one could transfer positively all other items in a lang. (SL basically involved the overcoming of the differences between the two lang systems-the native and target langs) Some rather strong claims were made of the CAH by lang teaching experts and linguists. A well-known model was offered by stock-well, Bowen and martin who posited what they called a hierarchy of difficulty by which a teacher could make a prediction of the relative difficulty of a given aspect of the target lang. They suggested eight possible phonological degrees of difficulty and they also constructed a hierarchy of difficulty for grammatical structures which included 16 levels of difficulty. Clifford Prator captured the essence of this grammatical hierarchy in six categories of difficulty which was applicable to both grammatical and phonological features of lang. * Level 0: Transfer. No difference or contrast is present between the 2 langs. The learner can simply transfer positively a sound, structure, or lexical item from the native lang to the target lang. EG: mortal, inteligente, arte, Americanos, etc. *Level 1-coalescence. Two items in the native lang become coalesce into one item in the target one. This requires the learner overlook a distinction they have grown accustomed to. EG: English 3rd person possessives require gender distinction while in Spanish they don’t. *Level 2-underdifferenciation: an item in the native lang is absent in the target lang. The learner must avoid it. EG: auxiliaries: DO. *Level 3-Reinterpretation: an item that exists in the native lang is given a new shape or distribution. *Level 4-Overdifferentiation: a new item entirely must be learned. English speakers learning Spanish must learn to include determiners in generalized nominal. (Man is mortal/El hombre es mortal); to learn Spanish grammatical gender inherent in nouns. *Level 5-Split:one item in the native lang becomes two or more in the target lang, requiring the learner to make a new distinction. E. g. an English speaker learning Spanish must learn the distinction between â€Å"Ser† o â€Å"estar† (TO BE). Prator and Stockwell both claimed that their hierarchy could be applied to virtually any two langs and make it possible to predict SL learner difficulties in any lang with a fair degree of certainty and objectivity. 2-From the CAH to CLI However, The CAH was not accepted for various reasons. First, it was oversimplified because it didn’t account for subtle phonetic, phonological and grammatical distinctions. Secondly, it was difficult to determine exactly which category a particular contrast fit into. That’s why Ronald Wardhaugh called the attempt to predict difficulty by means of contrastive analysis, the Strong version of the CAH due to the fact that it was quite unrealistic and impracticable and also it was built on sound theory to contrast the forms of langs. Nevertheless, he also noted that CA had intuitive appeal, and that teachers and linguists had successfully used the best linguistic knowledge available in order to account for observed difficulties in SL learning. He termed such observational use of CA the WEAK version of the CAH which recognizes the significance of interference across langs, the fact that such interference does exist and can explain difficulties and also recognizes that linguistic difficulties can be more profitably explained after the fact. This WEAK version is what now is called CROSS LINGUISTIC INFLUENCE. (implies much more than simply the effect of one’s first lang on a second: the second lang also influences the first). 3-Markedness and universal grammar  Fred Eckman proposed a useful method for determining directionality of difficulty. His markedness Differential hypothesis accounted for relative degrees of difficulties by means of principles of universal grammar. It distinguishes members of pair of related forms or structures by assuming that the marked member of a pair contains at least one more feature than the unmarked one. E. g. indefinite articles (a/an), an is the more complex or marked form (it has an additional sound) and a is the unmarked form with the wider distribution. Eckman showed that marked items in a lang, which are acquired later, will be more difficult to acquire than unmarked In recent years, the attention of some SL researchers has expanded beyond markedness hypothesis alone to broader framework of linguistic universals in gral, some of which focus on the applicability of notions of UG to SLA. Many rules acquired by children learning their FL are presumed to be universal. By extension, rules that are share by all langs comprise this UG. Such rules are a set of limitations or parameters of lang. Different langs set their parameters differently, thereby creating the characteristic grammar for that lang. The hope is that by discovering innate principles that govern what is possible in human langs, we may be better able to understand and describe contrasts between native and target langs and the difficulties encountered by adult SL learners. However, we do well to remember that describing and predicting difficulties amidst all the variables of human learning is still an elusive process. 4-Learner Language. The CAH, as we said before, ignores the intralingual effects of learning and other factors. This is the reason why researchers and teachers have come more and more to understand that SL learning is a process of the creative construction of a system in which learners are consciously testing hypothesis about the target lang from a number of possible sources of knowledge. They, in acting upon their environment, construct what to them is a legitimate system of lang on its own right-a structured set of rules that for the time being bring some order to the linguistic chaos that confronts them. By a gradual process of trial and error and hypothesis testing, learners slowly and tediously succeed in establishing closer and closer approximations to the system used by native speakers of the lang. A number of terms were coined to describe this process: Selinker: interlanguage: refers to the separateness of a SL learner’s system, a system that has a structurally intermediate status between the native and the target langs; Nemser-Approximate system; Corder-Idiosyncratic dialect: refers to the idea that the learner’s lang is unique to a particular individual, that the rules of his lang are particular to the lang of that individual alone. But we can highlight the importance that SL learners form their own self-contained linguistic systems. The most obvious approach to analyzing interlanguage is to study the speech and writing of learners or also called Learner Language. Production data is publicly observable and is presumably reflective of a learner’s underlying competence. Comprehension of a SL is more difficult to study since it is not directly observable and must be inferred from overt verbal and non-verbal responses, by artificial instruments, or by intuition of the teacher or researcher. It follows that the study of the speech and writing of learners is largely the study of errors of learners which is known as ERROR ANALYSIS. 5-Error analysis Human learning is fundamentally a process that involves the making of mistakes, by using mistakes to obtain feedback from the environment, and with that feedback to make new attempts that successively approximate desired goals. Lang learning, is in this sense, like any other human learning. Many of these mistakes are logical in the limited linguistic system within which children operate, but, by carefully processing feedback from others, children slowly but surely learn to produce what is acceptable speech in their native lang. SL learning is a process that is clearly not unlike FL learning in its trial-error nature. Inevitably learners will make mistakes in the process of acquisition, and that process will be impeded if they don’t commit errors and then benefit from various forms of feedback on those errors. 6-Mistakes and Errors. A mistake refers to a performance error that is either a random guess or a slip, in that it’s a failure to utilize a known system correctly. All people make mistakes, in both native and Slang situations. Native speakers are normally capable of recognizing and correcting such lapses or mistakes. (hesitations, slip of the tongue). So mistakes can be self-corrected. An error, a noticeable deviation from the adult grammar of a native speaker, reflects the competence of the learner. An error cannot be self-corrected. However, the learner’s capacity for self-correction is objectively observable only if the learner actually self-corrects, therefore, if no such self-correction occurs, we are still left with no means to identify error vs mistake. 7-Identifying and describing errors The first step in the process of analysis is the identification and description of errors. Corder provided a model, and according to it, any sentence uttered by the learner and subsequently transcribed can be analyzed for idiosyncrasies. A major distinction is made at the outset between Overt(sentence level) and Covert (discourse level) errors. Overtly erroneous utterances are unquestionably ungrammatical at the sentence level. E. g. â€Å"Does john can sing? † Covertly erroneous utterances are grammatically well-formed at the sentence level but aren’t interpretable within the context of communication. E. g. â€Å"I’m fine, thanks. † Is grammatically correct at the sentence level, but as a response to â€Å"Who are you? † it is obviously an error. A number of different categories for description of errors have been identified in research on learner lang. 1-errors of addition, omission, substitution, and ordering: eg: in English a do auxiliary might be added (Does john can sing? ), an item substituted (I lost my road). 2-levels of lang: phonology or orthography, lexicon, grammar, and discourse. It’s difficult to distinguish different levels of errors because a word with a faulty pronunciation might hide a syntactic or lexical error. 3-errors may also be viewed as Global or local. The global ones hinder communication: they prevent the hearer from comprehending some aspect of the message. Local errors don’t prevent the message from being heard, usually because there is always a minor violation of one segment of the sentence, allowing the hearer/reader to make an accurate guess about the intended message. (a scissors). 4-Lennon suggests that two related dimensions of errors, domain and extent, should be considered in any error analysis. Domain is the rank of linguistic unit that must be taken as context in order for that error to become apparent, and extent is the rank of linguistic unit that would have to be deleted, replaced, supplied, or reordered in order to repair the sentence. (a scissors: the domain is the phrase and the extent is the definite article) 8-Sources of errors It has been identified 4 sources of errors. 1-interlingual transfer: The beginning stages of learning a SL are especially vulnerable to interlingual transfer from native lang or interference. We have all heard English learners say â€Å"the book of Jack† instead of â€Å"Jack’s book†. These errors are attributable of interlingual transfer because before the system of the SL is familiar, the native lang is the only previous linguistic system upon which the learner can draw. 2-intralingual Transfer: (within the target lang itself) is a major factor in SL learning. As I say before, the early stages of lang learning are characterized by a predominance of interference (interlingual transfer), but once learners have begun to acquired parts of the new system, more and more intralingual transfer(generalizations within the target lang) is manifested. As learners progress in the SL, their previous experience and their existing subsumers begin to include structures within the target lang itself. (eg: the omission of THE: before unique nouns: the sun-sun) 3-Context of learning: context refers, E.g. to the classroom with its teacher and its materials in the case of school learning or the social situation in the case of untutored SL learning. In a classroom context the teacher or the textbook can lead the learner to make faulty hypothesis about the lang. (Richards: false concepts; Stenson: induced errors). Sts often make errors because of a misleading explanation, faulty presentation of a structure, word in a textbook, or even because of a pattern that was rotely memorized in a drill but improperly contextualized. 4-communication strategies: learners obviously use production strategies in order to enhance getting their message across, but at times these techniques can themselves become a source of error. (word coinage: creating a non-existing SL word based on a supposed rule e. g. vegetarianist-vegetarian; circumlocution: describe or exemplify the target object of action: the thing you use to write on the board: chalk; prefabricated patterns: use memorized stock phrases, usually for survival purposes) 9-Stages of learners lang development. There are many different ways to describe the progression of a learner’s linguistic development as their attempts at production successively approximate the target linguistic system. Based on observations of what the learner does in terms of errors alone, we can say that there 4 stages: 1-random errors: (corder: presystematic) the learner is only vaguely aware that there is some systematic order to a particular class of items. Inconstancies like â€Å"She cans sing†, and â€Å"she can singing†, all said by the same learner within a short period of time, might indicate a stage of experimentation and inaccurate guessing. 2-Emergent: the learner has begun to discern a system and to internalize certain rules. These rules may not be correct by target lang standards, but they are nevertheless legitimate in the mind of the learner. In gral, the learner is still unable to correct errors when they are pointed out by someone else. (Avoidance of structures and topic are typical) 3-Systematic: the learner is now able to manifest more consistency in producing the SL. While those rules that are sorted out in the learner’s brain are still not well-formed, they are more internally self-consistent and, they more closely approximate the target lang system. The learner can correct some errors when they are correct by someone else. 4-stabilization: the learner has relatively few errors and has mastered the system to the point that fluency and intended meanings are not problematic. (The learner’s ability to self-correct). At this point learners can stabilize too fast, allowing minor errors to slip by undetected, and thus, manifest fossilization. All the stages, however, don’t describe the learner’s total SL system because they do no account for sociolinguistic, functional, pragmatic or nonverbal strategies of which are important in assessing the total competence of the SL learner. 10-Fossilization It refers to the relatively permanent incorporation of incorrect linguistic forms into a person’s SL competence. It’s a normal and natural stage for many learners, and should not be viewed as some sort of terminal illness, in spite of the forbidding metaphor that suggests and unchangeable situation etched in stone. How do items become fossilized? It could be the result of the presence or absence of internal motivation factors, of seeking interaction with other people, of consciously focusing on forms, and of one’s strategic investment in the learning process. By using conditioning, reinforcement, need, motivation, self-determination, and others. It takes place by means of the same process as the internalization of correct forms. The latter is referred as learning, but the same elements of input, interaction, and feedback are present. When incorrect forms are produced, feedback that says â€Å"I understand you† reinforces those forms. 11-Form-focused instruction. It refers to put emphasis on lang forms and also to any pedagogical effort which is used to draw the learner’s attention to lang from either implicitly or explicitly (Spada). It has been used for many decades. But its practices (grammatical explanations, rote practice, etc) is clearly nor justified. ministerio. [emailprotected]. com. ar Telefono: (0362) 423637 directo – 453017/16 – 448014 – 53001/02 / Fax: 423637 – 448014 Error treatment and focus on lang forms appear to be more effective when incorporated into a communicative, learner-centered curriculum, and least effective when error correction is a dominant pedagogical feature, occupying the focal attention of sts in the classroom. Another important issue is whether the teacher should interrupt a student in the middle of an attempt to communicate. The answer is no because it should be after the sts finishes with the e? intended message. 12-Error treatment One of the major issues involved in carrying out FFI is the manner in which teachers deal with sts errors. Should errors be treated? Vigil and Oller proposed a model called The feedback model. The green light of the affective feedback mode allows the sender to continue attempting to get a message across; a red light causes the sender to abort such attempts. The traffic signal of cognitive feedback is the point at which error correction enters. A green light symbolizes non-corrective feedback that says I understand your message. A red one symbolizes corrective feedback that takes on a myriad of possible forms and causes the learner to make some kind of alteration in production. A yellow one could represent those various shades of colour that are interpreted by the learner as falling somewhere in between the green and the red lights, causing the learner to adjust, to alter, to recycle, to try again in some way. The most useful implication of this model for a theory of error treatment is that cognitive feedback must be optimal in order to be effective. Too much negative cognitive feedback- a barrage of interruptions, corrections, and overt attention to malformations- often leads learners to shut off their attempts at communication. They perceive that so much is wrong with their production that there is little hope to get anything right. On the other hand, too much positive cognitive feedback,- willingness of the teacher-hearer to let errors go uncorrected, to indicate understanding when it may not have occurred-serves to reinforce the errors of the speaker-learner. The result is the persistence, and perhaps the eventual fossilization of such errors. The task of the teacher is to discern the optimal tension between positive and negative cognitive feedback: providing enough green lights to encouraged continued communication, but not so many that crucial errors go unnoticed, and providing enough red lights to call attention to those crucial errors, but not so many that the learner is discouraged from attempting to speak at all. Set II: Communicative Competence The term was coined by Dell Hymes who was convinced that Chomsky’s notions of competence were too limited. Chomsky’s rule-governed creativity that so aptly described a child’s mushrooming grammar at the age of 3 or 4 didn’t account for the social and functional rules of lang. So he referred to communicative competence as that aspect of our competence that enables us to convey and interpret messages and to negotiate meanings interpersonally within specific contexts. Savington noted that communicative competence is relative, not absolute, and depends on the cooperation of all participants involved. It’s a dynamic, interpersonal construct that ca be examine only by means of the overt performance of 2 or more individuals in the process of communication. In the 70s, research on CC distinguished between linguistic and communicative competence to highlight the difference between knowledge about lang forms and knowledge that enables a person to communicate functionally and interactively. James Cummins proposed a distinction between Cognitive/Academic lang proficiency (the dimension of proficiency in which the earner manipulates or reflects upon the surface features of lang outside of the immediate interpersonal context, it is what learners often use in classroom exercises and tests and that focus on forms) and Basic Interpersonal communication skills (is the communicative capacity that all children acquire in order to be able to function in daily interpersonal exchanges. Later he modified his notions I the form of context-reduced and context-embedded communication considering the context in which lang is used. A good share of classroom, school-oriented lang is context-reduced, while face-to-face communication with people is context-embedded. In Canale and Swain’s definition, 4 different components make up the construct of CC. The first 2 reflect the use of the linguistic system itself and the last 2 define the functional aspects of communication: A-Grammatical competence: is that aspect of CC that encompasses knowledge of lexical items and of rules of morphology, syntax, sentence grammar semantics, and phonology. (the mastery of the linguistic code of a lang). B-discourse competence: the ability we have to connect sentences in stretches of discourse and to form a meaningful whole out of a series of utterances. (from simple spoken conversation to lengthy written texts, it has to do with the inter-sentential relationships) C-Strategic competence: the verbal and non-verbal communication strategies that may be called into action to compensate from breakdowns in communication due to performance variables or due to insufficient knowledge (Canale); the strategies that one uses to compensate for imperfect knowledge of rules (Savington); It’s the competence underlying our ability to make repairs, to cope with imperfect knowledge, and to sustain communication through paraphrase, circumlocution, repetition, hesitation, avoidance, and guessing. However, this model has undergone some other modifications over the years. Backman places grammatical and discourse (textual) comp under one code, which he called organizational competence: all those rules and systems that dictate what we can do with the forms of lang: whether they may be sentence level rules (grammar) or rules that govern how we string sentences together (discourse). The sociolinguistic competence is now broken down into two separate pragmatic categories: functional aspects of lang (Illocutionary comp, or, pertaining to sending and receiving intended meanings) and sociolinguistic aspects (which deal with such considerations and politeness, formality, metaphor, register, and culturally related aspects of lang). 1-Language Functions They are essentially the purposes that we accomplish with lang, e. g. , stating, requesting, responding, greeting, etc. They can’t be accomplish without the forms of lang (words, morphemes, grammar rules) because they are the outward manifestation of lang while functions are the realization of those forms. Communication may be regarded as a combination of acts, a series of elements with purpose and intend, it’s functional, purposive, and designed to bring about some effect on the environment of the hearers and speakers. It’s a series of acts or speech acts which are used systematically to accomplish particular purposes. (consequences=perlocutionary force: the effect that utterances achieve). The functional approach to describing lang is one that has its roots in the traditions of British linguist Firth, who viewed lang as interactive and interpersonal, a way of behaving and making others behave. Michael Halliday used the term to mean the purposive nature of communication and outlined 7 different functions: A-The instrumental function serves to manipulate the environment, to cause certain events to happen (This court finds you guilty, danger: they are communicative acts that have a specific perlocutionary force, they bring about a particular condition. B-The regulatory one is the control of events, e. g. approval, disapproval, behavior control, setting laws and rules. C- The representational is the use of lang to make statements, convey facts and knowledge, explain and report; to represent reality as one sees it (The sun is hot). D-The interactional serves to ensure social maintenance (Phatic communion-Malinowsky- refers to the communicative contact between and among human beings that simply allows them to establish social contact and to keep channels of communication open and this requires knowledge of slang, jargon, jokes, folklore, cultural mores, politeness, and formality expectations, and other keys to social exchange. E-The personal allows a speaker to express feelings, emotions, personality. A person’s individuality is usually characterized by his/her use of `personal function of communication. F-The heuristic involves lang used to acquire knowledge, to learn about the environment which are often conveyed in the form of questions, that will lead to answer. (Children’s why questions) G-The imaginative serves to create imaginary systems or ideas (Telling fairy tales, joking, or writing a novel). Through this we are free to go beyond the real world to soar to the heights of the beauty of lang itself, and through that lang to create impossible dreams if we so desire. 2-Functional syllabuses The functional part of the notional-functional syllabus corresponded to lang functions. Curricula were organized around such function as identifying, reporting, denying, declining an invitation, asking permission, apologizing, etc. 3-Discourse analysis It is the relationship between forms and functions of lang which encompasses the notion that lang is more than a sentence level phenomenon because we string many sentences together in interrelated, cohesive units. In most oral lang, our discourse is marked by exchanges with another person or several persons in which a few sentences spoken by one participant are followed and built upon by sentences spoken by another. Both the production and comprehension of lang are a factor of our ability to perceive and process stretches of discourse, to formulate representations of meaning not just from a single sentence but from referents in both previous sentences and following sentences. Without the pragmatic contexts of discourse, our communication would be extraordinarily ambiguous. 4-Conversation Analysis. Conversations are excellent examples of the interactive and interpersonal nature of communication. They are cooperative ventures. What are the rules of our conversations? How do we get someone’s attention?. Very early in life children learn the first and essential rule of conversation: attention getting. If you wish linguistic production to be functional and to accomplish its intended purpose, you must of course have the attention of your audience. The attention getting conversations within each lang-both verbal and nonverbal- need to be carefully assimilated by learners. Once learners have secured the hearer’s attention, their task becomes one of topic nomination. Rules for nominating topics in conversations which involve both verbal and non-verbal cues, are highly contextually constrained. Once the topic is nominated, participants then embark on topic development, using conventions of turn-taking to accomplish various functions of lang. Aside from turn-taking itself, topic development, or maintenance of a conversation, involves clarification, shifting, avoidance, and interruption. Topic termination is an art that even native speakers of a lang have difficulty in mastering at times. 5-Pragmatics It constraints on lang comprehension and production may be loosely thought of as the effect of context on string of linguistic events. 6-Lang and GenderThe effect of one’s sex on both production and reception of lang is one of the major factors affecting the acquisition of communicative competence in virtually every lang. Among American English speakers, girls have been found to produce more standards lang than boys, a pattern that continue through adulthood. Tanner and others have found that males place more value, in a conversational interaction, on status and report talk, competing for the floor, while females value connections and rapport, fulfilling their role as more cooperative and facilitative conversationalists, concerned for their partner’s positive face needs. 7-Styles and Register Another important issue is the way we use lang in different styles depending on the context of a communicative act in terms of subject matter, audience, occasion, shared experience, and purpose of communication. A style is a variety of lang used for a specific purpose. When you converse informally with a friend, you use a different style than you use in an interview for a job with a prospective employer. Native speakers, as they mature into adulthood, learn to adopt appropriate styles for widely different contexts. Adult 2nd lang learners must acquire this styles in order to be able to encode and decode the discourse around them correctly. Martin Joos provided one of the most common classifications of speech styles using criterion of formality: there are five levels: 1-An oratorical style is used in public speaking before a large audience; it is planned in advance intonation is somewhat exaggerated and numerous rhetorical devices are appropriate. 2-A deliberative style is also used in addressing audiences to permit effective interchange between speaker and hearers, however, it is not as polished as the previous style: a typical university classroom. 3-A consultative style is typically a dialogue, through formal enough that words are chosen with some care. E. g. business transactions, doctor patient’s conversations. 4-Casual conversations are between friends or colleagues or sometimes members of family. Words don’t need to be guarded and social barriers are moderately low. 5-an intimate style is one characterized by complete absence of social inhibitions. Talk with family, loved ones, and very close friends. Styles are manifested in both verbal and nonverbal(how you say sth) features. Difference in styles can be conveyed in body lang, gestures, eye contact and they are very difficult aspects of lang for the learners to acquire. A-Body lang or kinesics: all cultures throughout the history of humankind have relied on kinesics for conveying important messages. However, there is a tremendous variation cross-culturally and cross-linguistically in the specific interpretation of gestures because sometimes a gesture that is appropriate in one culture is obscene or insulting in another. Nodding the head, for example means â€Å"yes† among most European lang speakers. But among japan, â€Å"Yes† is expressed by bringing the arms to the chest and waving them. B- Eye contact: the gestures of our eyes are in some instances keys to communication. Eyes can signal interest, boredom, empathy, hostility, attraction, understanding, misunderstandings and other messages. C-proxemics: physical proximity is a meaningful communicative category. Cultures vary widely in acceptable distances for conversation. Sometimes objects- desk, other furniture- serve to maintain certain physical proximity and tend to establish both the overall register and relationship between participants.

Microcontroller Based DC Motor Speed Controller

Microcontroller Based DC Motor Speed Controller In this report I present a microcontroller based DC motor speed controller. DC motors play a vital role in most of the industrial areas. They are mainly used for the mechanical movements of physical applications such as media drives, power plants, lifts, elevators, conveyers, belt driven loads (printing press) etc. The controller implements the control strategy governing the load and motor characteristics. To match the load and motor, the input to the microcontroller is manipulated by the controller. The purpose of a motor speed controller is to capture a signal representing the demanded speed, and to drive the motor at that speed. The controller may or may not actually measure the speed of the motor. If it does, it is called a Feedback Speed Controller or Closed Loop Speed Controller, if not it is called an Open Loop Speed Controller. Feedback speed control is better, but more complicated, and may not be required for a simple circuit design. The former (closed loop) is implemented in the presented controller design. The subject arrangement consisted of a tachometer attached to the shaft of the motor. A controller design cannot be more accurate than methods aimed at measuring actual motor speed. This is readily attained by coupling the motor shaft with a tachometer. The tachometer output signal is converted to a dc voltage signal acceptable to the microcontroller. The microcontroller is programmed to drive the motor accomplishing the load requirement. The operation of dc motor was studied. Several types of motors and various control types were investigated. The project also intends to familiarize us with the efficiency of PIC in control systems. To evaluate the effectiveness of the controller, analysis will be conducted driving variable load while maintaining constant speed of the motor. The advantages of using microcontrollers to control dc motor were studied. INTRODUCTION 1.1 MOTOR An electric motor is an electromechanical device that converts electrical energy to mechanical energy. The mechanical energy can be used to perform work such as rotating a pump impeller, fan, blower, driving a compressor, lifting materials etc. It is estimated that about 70% of the total electrical load is accounted by motors only. 1.2 CLASSIFICATION OF MOTORS Electric Motors Alternating Current (AC) Motors Direct Current (DC) Motors Synchronous Induction Three-Phase Single-Phase Self Excited Separately Excited Series Shunt Compound FIG-1.1 classification of motors 1.3 AC MOTORS An AC motor is a motor that is driven by an alternating current. It consists of two basic parts, an outside stationary stator having coils supplied with alternating current to produce a rotating magnetic field, and an inside rotor attached to the output shaft that is given a torque by the rotating field. 1.3.1 TYPES OF AC MOTORS There are two types of AC motors, depending on the type of rotor used. The first is the synchronous motor, which rotates exactly at the supply frequency or a sub multiple of the supply frequency. The magnetic field on the rotor is either generated by current delivered through slip rings or by a permanent magnet. The second type is the induction motor, which turns slightly slower than the supply frequency. The magnetic field on the rotor of this motor is created by an induced current. 1.3.2 TYPES OF INDUCTION MOTORS Squirrel-Cage Induction Motors The most simple and reliable of all electric motors. It is essentially a constant speed machine, which is adaptable for users under all but the most severe starting conditions. Requires little attention as there are no commutator or slip rings, yet operates with good efficiency. Wound-Rotor (Slip Ring) Induction motor It is used for constant speed-service requiring a heavier starting torque than is obtainable with squirrel cage type. Because of its lower starting current, this type is frequently used instead of the squirrel-cage type in larger sizes. These motors are also used for varying-speed-service. Speed varies with this load, so that they should not be used where constant speed at each adjustment is required, as for machine tools. Single Phase Induction Motors This motor is used mostly in small sizes, where polyphase current is not available. Characteristics are not as good as the polyphase motor and for size larger than 10 HP, the line disturbance is likely to be objectionable. These motors are commonly used for light starting and for running loads up to 1/3 HP Capacitor and repulsion types provide greater torque and are built in sizes up to 10 HP. Synchronous Motors Run at constant speed fixed by frequency of the system. Require direct current for excitation and have low starting torque. For large motor-generators sets, frequency changes, air compressors and similar apparatus which permits starting under a light load, for which they are generally used. These motors are used with considerable advantage, particularly on large power systems, because of their inherent ability to improve the power factor of the system. 1.4 DC MOTOR Direct-Current motors, as the name implies, use a direct-unidirectional current. A DC motor has three main components: Field pole. The interaction of two magnetic fields causes the rotation in a DC motor. The DC motor has field poles that are stationary and an armature that turns on bearings in the space between the field poles. A simple DC motor has two field poles: a north pole and a south pole. The magnetic lines of force extend across the opening between the poles from north to south. Armature. When current goes through the armature, it becomes an electromagnet. The armature, cylindrical in shape, is linked to a drive shaft in order to drive the load. The armature rotates in the magnetic field established by the poles, until the north and south poles of the magnets change location with respect to the armature. Once this happens, the current is reversed to switch the south and north poles of the armature. Commutator. This component is found mainly in DC motors. Its purpose is to overturn the direction of the electric current in the armature. The commutator also helps in the transmission of current between the armature and the power source. 1.4.1 OPERATION OF A DC MOTOR: When a dc motor is subject to dc voltage, the current flows through the armature coil. A wire carrying current also has a magnetic field around it. This magnetic field distorts the parallel magnetic field of stator to produce a force which causes the armature coil to turn. FIG-1.2 operation of motor Each coil of the armature is not only connected to the brushes but the brushes are connected first to one end and then to the other end of the coil. This commutating action is necessary to maintain the same direction of the current flow in the armature coils relative to the magnetic field lines in the field poles. The motor would never turn without commutation. FIG-1.3 cross section diagram of a motor 1.4.2 Types of Excitations There are two basic elements in a DC motor. The way in which these are connected results in various types of DC motors. SHUNT WOUND: The construction and principle of operation of a shunt motor is similar to any DC motor. This type of motor is called shunt because the field is in parallel or shunts the armature. The shunt field is directly connected in parallel with the armature circuit. Shunt windings require large number of turns to produce a strong magnetic field. SERIES WOUND: In a series wound motor, the field is connected in series with the armature. In this type, the speed tends to increase until the back EMF equals the impressed voltage. The EMF also decreases the current in the field and armature. As the field weakens more speed is required to maintain the counter EMF. Thus a series motor is used only where the load is attached e.g. A lift truck, an electric crane. Etc. COMPOUND WOUND: A compound motor has two field windings, the shunt field and series field. The shunt connected in parallel with the armature and the series field connected in series with the armature. The combination of both fields gives double advantages. It has a greater torque than the shunt motor due to the series field and fairly constant speed due to the series field winding. The compound motor has both shunt and series motor characteristics. These will be discussed along with their control techniques in the next chapter. 1.5 TACHOMETER A tachometer is an instrument that measures the rotational speed of the shaft of the motor. It functions in a similar fashion as compared to a speedometer on a car. It tells you the speed of the car. Similarly the tachometer is used to measure the motor speed. In a closed loop control system the information about the instantaneous state of the output is fed back and compared with the input and difference is used to modify the output in such manner as to achieve a desired condition. Similarly a tachometer is coupled to the shaft of the motor. Thus a signal representing the speed of the motor is produced. This signal is fed back to the input where it is compared to the speed command voltage. The error produced is actuated by the speed of the motor. In my designed controller the error actuating and motor control is achieved by programming the microcontroller. It is used to control the rotation of the motor. It senses the input and process it using the program burned in it and gives the required PWM output on the required port pins. This output controls the on/off time of the mosfet and thus controls the motor. This technique and mosfets will be discussed in the next chapter. As long as the speed command voltage is held constant, the motor will run at a proportional constant speed regardless of the mechanical load. The set speed control gives a dc voltage input, for example 12 volts for maximum speed and zero for stationary. This could be a potentiometer providing any voltage in a range from zero to +12 volts. The microcontroller (PIC) amplifies the difference between the two input voltages (tachometer and potentiometer) and the error is actuated. 1.6 MICROCONTROLLER (PIC) The name PIC initially referred to Programmable Interface Controller. Advantages of using PIC over other controlling devices for controlling the DC motor are given below: SPEED The execution of an instruction in PIC IC is very fast (in micro seconds) and can be changed by changing the oscillator frequency. One instruction generally takes 0.2 microseconds. COMPACT: The PIC IC will make the hardware circuitry compact. RISC PROCESSOR The instruction set consists of only 35 instructions. EPROM PROGRAM MEMORY Program can be modified and rewritten very easily. INBUILT HARDWARE SUPPORT Since PIC IC has inbuilt programmable timers, ports and interrupts, no extra hardware is needed. POWERFUL OUTPUT PIN CONTROL Output pins can be driven to high state, using a single instruction. The output pin can drive a load up to 25mA. INBUILT I/O PORTS EXPANSIONS This reduces the extra ICs which are needed for port expansion and port can be expanded very easily. INTEGRATION OF OPERATIONAL FEATURES Power on reset and brown/out protection ensures that the chip operates only when the supply voltage is within specification. A watchdog timer resets PIC if the chip ever malfunctions and deviates from its normal operation. The speed of motor is directly proportional to the DC voltage applied across its terminals. Hence, if we control the voltage applied across its terminal we actually control its speed. A PWM (Pulse Width Modulation) wave can be used to control the speed of the motor. Here the average voltage given or the average current flowing through the motor will change depending on the ON and OFF time of the pulses controlling the speed of the motor i.e. The duty cycle of the wave controls motor speed. This wave is generated by the PIC. . CHAPTER 2. 2.1 DC SHUNT MOTOR FIG -2.3 Shunt windings require large number of turns to produce a strong magnetic field. This is because a small gauge wire cannot handle heavy currents. As a result, when voltage is applied, very little current flows through the shunt coil. The interaction of the magnetic fields between the one from armature and the one from shunt coil causes the motor to rotate. The speed can be controlled by varying the field strength or armature voltage. Current is supplied from the stationary housing to the rotating armature through commutator brushes arrangement. As the stator is stationary, power is applied directly to it. 2.1.2 SPEED CONTROL OF A DC SHUNT MOTOR This type of motor runs at a constant speed practically, regardless of the load. It is the type generally used in commercial practice. Speed of the shunt wound motors may be varied in two ways: First, by inserting resistance in series with the armature, thus decreasing speed (FIG ) And second, by inserting resistance in the field circuit. In this case the speed will vary with each change in load. This normally works with any controller setting i.e. it maintains constant speed despite variable load. Therefore, a shunt motor has proved its efficiency in adjustable speed service and loads requiring a low starting torque. 2.2 DC SERIES MOTOR In a series motor, the field winding (shunt field) is connected in series with the armature winding (A) as shown in the figure. The field current is therefore equal to the armature current. Speed is restricted to 5000 RPM It must be avoided to run a series motor with no load because the motor will accelerate uncontrollably. FIG-2.5 V = Supply voltage E = Generated e.m.f I = Supply current RA = Armature resistance RF = Field resistance 2.2.2 SPEED CONTROL OF A DC SERIES MOTOR The speed of a series motor depends almost entirely on the flux. The stronger the field flux, the lower the speed. Likewise, decrease in load current and therefore in field current and field flux causes an increase in speed. This can be achieved by adding a resistor in parallel with the series field winding. This causes the field current to decrease and the flux drops accordingly. This causes the motor speed to increase. The speed can be decreased by adding an external resistor in series with the armature and the field winding. This would cause a reduction in the armature supply voltage causing the motor speed to decrease. 2.3 DC COMPOUND MOTOR A DC compound motor is a combination of shunt and series motor. In a compound motor, the field winding (shunt field) is connected in parallel in series with the armature winding (A). For this reason this motor has a good starting torque and a stable speed. The higher the percentage of compounding (i.e. percentage of field winding connected in series), the higher the starting torque this motor can handle. For example, compounding of 40-50% makes the motor suitable for hoists and cranes, but standard compound motors (12%) are not. There are 2 major types of compound motors. These are given below: Cumulative compound motors Differential compound motors FIF-2.6 CUMULATIVE COMPOUND MOTOR FIG-2.7 DIFFERENTIAL COMPOUND MOTOR 2.3.2 SPEED CONTROL OF A COMPOUND MOTOR The speed of a compound motor can easily be controlled by changing the voltage supply to the motor. A solid state AC variable frequency motor drive can also be used to vary the speed of an AC motor. 2.4 PWM (PULSE WIDTH MODULATION) PWM, or Pulse Width Modulation, is a method of controlling the amount of power to a load without having to dissipate any power in the load driver. Imagine a 10W light bulb load supplied from a battery. In this case the battery supplies 10W of power, and the light bulb converts this 10W into light and heat. No power is lost anywhere else in the circuit. If we wanted to dim the light bulb, so it only absorbed 5W of power, we could place a resistor in series which absorbed 5W and then the light bulb could absorb the other 5W. This would work, but the power dissipated in the resistor not only makes it get very hot, but is wasted. The battery is still supplying 10W. An alternative way is to switch the light bulb on and off very quickly so that it is only on for half of the time. Then the average power taken by the light bulb is still only 5W, and the average power supplied by the battery is only supplying 5W also. If we wanted the bulb to take 6W, we could leave the switch on for a little longer than the time it was off, then a little more average power will be delivered to the bulb. This on-off switching is called PWM. The amount of power delivered to the load is proportional to the percentage of time that the load is switched on. Pulse-width modulation (PWM) or duty cycle variations are commonly used in speed control of dc motor. The duty cycle is defined as the percentage of digital high to digital low and digital high pulse-width during a PWM period. Thus by varying the pulse width, we can vary the average voltage across a DC motor and hence its speed In my presented controller design the PWM (Pulse Width Modulation) function of PIC is used for the electric current control to drive a motor. PWM can change the duty of the pulse to output into CCP1 by the data. The duty of the pulse of CCP1 is controlled in the voltage (the control voltage). When the control voltage is higher than the regulation value, the H level time of the CCP1 pulse is made long and the number of rotations of the motor is lowered. When the control voltage is lower than the regulation value, the H level time of the CCP1 pulse is made short and the number of rotations of the motor is raised. This mechanism will be discussed and elaborated in the next chapter. 2.5 MOSFETS The speed controller works by varying the average voltage sent to the motor. Imagine a light bulb with a switch. When you close the switch, the bulb goes on and is at full brightness, say 100 Watts. When you open the switch it goes off (0 Watts). Now if you close the switch for a fraction of a second, and then open it for the same amount of time, the filament wont have time to cool down and heat up, and you will just get an average glow of 50 Watts. This is how lamp dimmers work, and the same principle is used by speed controllers to drive a motor. When the switch is closed, the motor sees 12 Volts, and when it is open it sees 0 Volts. If the switch is open for the same amount of time as it is closed, the motor will see an average of 6 Volts, and will run more slowly accordingly. As the amount of time that the voltage is on increases compared with the amount of time that it is off, the average speed of the motor increases. This on-off switching is performed by power MOSFETs. A MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) is a device that can turn very large currents on and off under the control of a low signal level voltage 2.5.1 TYPES OF MOSFETS. There are NPN type and PNP type as the semiconductor part. When no voltage is applied no electric current flows between the drain and the source. NPN type is called N-channel and PNP type is called P channel. An oxide film is put to the semiconductor of NPN or PNP and metal is put onto it as the gate. In case of NPN, the part of N is a source pole and a drain pole. In case of PNP, the part of P is the polar side. When positive voltage is applied to the gate of the N-channel MOS FET, the electrons of N-channel of source and drain are attracted to the gate and go into the P-channel semiconductor among both. With the movement of these electrons, it conditions itself like spans a bridge for electrons between drain and source. The size of this bridge is controlled by the voltage to apply to the gate. . This type (N CHANNEL) of mosfet is used in the presented controller. FIG 2.8 In case of P-channel MOS FET, the voltage is opposite but does similar operation. When negative voltage is applied to the gate of P-channel MOS FET, the holes of P-channel of source and drain are attracted to the gate and go into the N-channel semiconductor among both. With the movement of these holes, a bridge for holes is spanned and the electric current flows between drain and source. Transistor controls an output current by the input current. However, in case of FET, it controls an output current by input voltage (Electric field). The input current doesnt flow. To handle a MOS FET, needs attention because the oxidation insulation film is thin. This film is prone to the high voltage of the static electricity and so on. CHAPTER 3 The highlighted part in the figure represents the shaft which links the motor and the tachometer. The speed of the motor is directly proportional to the frequency of the tachometer. The dc voltage input is provided by the potentiometer. The microcontroller operates on a dc voltage. The output from the tachometer is a sine wave which has to be rectified in order to operate the pic. This is achieved using an F/V converter. The converter releases a dc logic signal which operates the pic. CIRCUIT EXPLANATION: The input voltage to the main motor is controlled by a potentiometer. This variable resistor could be adjusted manually to provide a 0-12 v input. This voltage sets the number of rotations of the main motor. The input voltage of PIC becomes low when bringing VR1 close to the side 1 and PIC increases the drive electric current of the motor. That is, the revolution of the motor rises. The input voltage of PIC becomes high when bringing VR1 close to the side 3 and PIC reduces the drive electric current of the motor. That is, the revolution of the motor slows down. Control voltage is defined as the feedback signal which is produced to rectify the error between the desired and controlled speed. This is provided by the tachometer in our case. The output from the tachometer is a sine wave which cannot operate the microcontroller to perform the programmed functions. This is converted to a dc voltage signal compatible with the pic microcontroller. This changed voltage is used to enable the CCP feature of the PIC resulting in motor drive. The CCP feature will be discussed in detail later in the chapter. The control voltage to PIC is thus governed by the fluctuations of the main motor. This control voltage (feedback signal) is directly proportional to the rotational speed of the motor. The PIC microcontroller is the brain of the circuit controlling all actions to be done and the output. PIC controls the electric drive current for the control voltage to become a regulation value. When the revolution of the motor slows down, i.e. control voltage goes down, the drive electric current of the motor is increased and number of rotations is raised. When the control voltage reaches a regulation value, a drive electric current at the point is held. When the number of rotations of the motor is high, i.e. the control voltage is high, the drive electric current of the motor is reduced and number of rotations is lowered D1 is used to protect PIC when the voltage of the detection motor is high. The voltage which is applied to the terminal of PIC is a maximum of +5V. This zener diode prevents the destruction of PIC when the speed detection voltage of the motor exceeds 5V. CCP FEATURE Capture, Compare and Pulse Width Modulation feature is abbreviated to form CCP. Capture This is the function to capture the 16 bits value of timer1 register when an event occurs on pin RC2/CCP1. This can be used for the measurement of the period time of the signal like the frequency counter and so on Compare Generate an interrupt, or change on output pin, when Timer 1 matches a pre-set comparison value PWM Create a re-configurable steady duty cycle square wave output at a user set frequency. The timer resource of the capture and compare is timer1 and the timer resource of PWM is timer2. The following steps should be taken when configuring the CCP module for PWM operation: Set the PWM period by writing to the PR2 register. PWM Period equals [(PR2+1)]*4Tosc*(timer 2 prescale value), and the resultant PWM frequency equals 1/ PWM_Period. Tosc stands for time period of the oscillations. Set the PWM duty cycle by writing to the CCPR1L register and CCP1X and CCP1Y bits of CCP1CON register. Duty Cycle is based on CCPRxL, most significant byte, and CCPxCON, least significant two bits. CCPRxL functions as a comparative value with timer 2 and a scaling factor to determine the number of counts of CCPx. PWM logic remains high, without considering CCPxCON. The two least significant bits, CCPxCON, determine the percentage of the maximum resolution the PWM duty cycle is extended. Make the CCP1 pin an output by clearing the TRISC. Set the TMR2 prescale value and enable Timer2 by writing to T2CON register. Configure the CCP1 module for PWM operation. PWM can change the duty of the pulse to output into CCP1 by the data. When the time period of the H level of the pulse of CCP1 is short, the time of ON (the L level) becomes long in TR2 which implies that the drive electric current of the motor increases. Oppositely, when the H level time of the pulse of CCP1 is long, the ON time of TR2 becomes short and the drive electric current of the motor decreases. The duty of the pulse of CCP1 is controlled by the control voltage (feedback signal) which was taken in with input circuit. When the control voltage is higher than the regulation value, the H level time of the CCP1 pulse is made long and the number of rotations of the motor is lowered. When the control voltage is lower than the regulation value, the H level time of the CCP1 pulse is made short and the number of rotations of the motor is raised. A three terminal regulator is used for getting the operate voltage for pic. PARTS PIC16F873 3 Terminal regulator ( 7805) Transistor for MOS FET drive ( 2SC1815 ) Power MOS FET ( 2SK3142 ) Zener diode ( RD5A ) IC socket Resonator Variable resistor for motor speed setting Resistors Capacitors Printed board VFC 320 (F/V CONV) Bipolar transistor 2N222 FURURE WORK: Dec: complete circuit design and order components. January: software design and circuit assembly February: Simulation and preparation of final report and presentation March: review and appendices April: submission.