A Role for Theory Research Paper Example | Topics and Well Written Essays - 500 words - 1

A Role for Theory - Research Paper Example Theory therefore has become the basis of further advanced learning. The group theory perspective is one important idea that could help explain public-policy origination, implementation and/or execution. At some point, this covers elemental ideas that could help explain the preferences of certain political parties (Simon, 2010, p.24). As observed, people when come into a group would usually create strong political power. In fact, when there is consensus over everything, power or voices of the majority usually prevails. More about these ideas are actually emphasized in detail through the group theory perspective. Therefore, it is important that even though theory would not become the basis of the actual truth, it could stand as a significant framework prior to the discovery of more advanced form of learning. Theory therefore could either be proven or should become the basis of improving higher form of knowledge or ideas on certain things. In the case of group theory together with its p erspectives, it is clear that it has become the basis and even stepping stone to leapfrog in the field of public policy origination, implementation and/or execution. Group theory is composed of theoretical models of group behavior which one could use to predict the kind or level of policy creation or implementation needed (Smith, 2007, p.6). In other words, with group theory one would have the chance to picture out certain group behavioral models so as to provide substantial reduction of complexity in understanding group behaviors. After all, policy creation and implementation relied on certain things and these include group reaction or its level of response. I believe that generally public policy theories have a role to play in the daily lives of policy practitioners as these would supplement their understanding of the policy-making activities aside from actual

Student teacher ratio Essay Example for Free

Student teacher ratio Essay Introduction Policy makers nationwide, in the field of education, are concerned about the educational system, particularly with regards to the overall success of educational programs. Considerable research has suggested that, compared to their Asian and European counterparts, American students, especially at the secondary level, do not perform as well (Ehrenberg, Brewer, Gamoran Willms, 2001). Given the evidence in support of this observation, policy makers have set out to examine the weaknesses in the system so that improvements can be made in deficient areas. One of the issues that have continued to figure at the forefront of debates is the matter of the student-teacher ratio. Researchers are concerned about the potential effects it may have on student performance and achievement (Borland, Howsen Trawick, 2005, p. 73). Gursky in 1998 indicated that adjusting class size was probably the most â€Å"popular educational initiative across the country (p. 16). At that time school districts across the nation were seeking to implement mandated policies on the required size of classes. President Clinton, in that same year, demonstrated his commitment to improving educational programs when he proposed in his State of the Union address that $12 billion be invested over a seven year period into programs geared at reducing the class size in the lower grades. This, he suggested, would be accomplished through the hiring of about 100, 000 additional teachers (Gursky, 1998). President Clinton’s position reflects that held by some analysts in education who believe that increasing and improving inputs into the educational system is a useful way of impacting student performance. Inputs, on the part of administrators or government, are usually classified in terms of finances or resources. Adjusting the student-teacher ratio or government spending on education, for example, are some of the means by which policy makers have tackled the issue of student achievement (Lamdin, 1995). This is based on the hypothesis that student achievement, as measured by their performance on standardized instruments, is dependent on and determined by the resources invested into the educational institutions, the student-teacher ratio being one of the most important and noted investments (Graddy Stevens, 2005). Student achievement in these contexts is usually measured solely or primarily on the basis of performance on standardized test instruments. However student performance on tests is not the only way of determining achievement. Dustmann, Rajah van Soest (2003) examine achievement in a broader context. They consider that the decision to pursue further education after completing high school could be considered an aspect of student achievement. Therefore school continuation after completing high school could also be a measure of learning. This is, as the literature demonstrates, that individuals who pursue higher education and thereby obtain higher qualifications earn significantly more than individuals simply completing high school (Colorado Association, n. d. ). According to statistics reported by the U. S. Census Bureau in 2004 persons who drop out of high school earn, on average, $19, 169 annually, those graduating high school earn $28, 645, college graduates earn $51, 554 and those with advanced degrees earn $78, 093 (as cited in Colorado Association, n. d. ). Considerations on student achievement should therefore not be restricted to scores on standardized instruments but should take into other factors which demonstrate, in the long run, that the educational system has been of benefit to the student. It is therefore not strange that policy makers wish to improve student performance. The option of reducing class sizes is probably, indeed, one of the most popular governmental initiatives geared at impacting student performance. By reducing class sizes the government is able to increase the resources available to individual schools and districts (Dustmann et al. , 2003, p. F99). Thus, the rationale for reducing class size, according to researchers, is that it is a tool for school improvement. Governments have tended to adopt this strategy because, according to Dustmann (2003), these programs are visible to voters and comparatively easy to implement and not necessarily based on research which demonstrates that this strategy is indeed effective in improving student performance. Though much research has gone into the issue it is still debated whether or not the student-teacher ratio shares a direct relationship with student performance. Not only in the United States but also in the United Kingdom the supporting arguments from either side are equally as weighty (Graddy Stevens, 2005) and it is still disputed whether or not reducing class sizes has a noticeable effect on student achievement (Dustmann et al. , 2003, p. F99). The merits of smaller classes There are many arguments put forward that a smaller class size is more beneficial. Among the arguments some propose that smaller classes are better in terms of discipline (Gursky, 1998). Having fewer students in the classroom means that there will be less noise and also a less disruptive behavior (Ehrenberg, Brewer, Gamoran Willms, 2001). Another argument put forward for smaller class sizes is that the teacher has greater opportunities to provide individualized instruction for the students in the classroom (Gursky, 1998). In this way teachers can provided needed assistance to struggling students as there is less demand on his/her time due to the lower number of pupils. Teachers are in a better position to familiarize themselves with all the students in the class in order to develop a greater understanding of their strengths, weaknesses, challenges, learning styles etcetera, and make the necessary accommodations to ensure each child is successful in the regular classroom. Instructional variety has been one of those topics that have been heavily debated, especially given that more and more culturally diverse students are entering the classroom. With the new mandates under the No Child Left Behind policy all students are expected to perform to the same level at the end of the year, regardless of learning, cognitive or other difficulties. In a smaller classroom the teacher is able to manipulate stimulus material to gain the interest of the cross section of pupils, adopt varied teaching strategies, provide for greater in-class interaction of pupils and overall free up time for the teacher to complete activities in the classroom that are often constrained because of time and class size (Ehrenberg, 2001). The benefits of smaller classrooms thus illuminated seem overwhelming. However, considering that research has not been conducted to justify these claims they are really superfluous (Ehrenberg et al. , 2001). Until a consensus has been made on the place of smaller class sizes in the educational system, it is hasty to matter-of-factly say that these benefits are automatic with smaller classes and reduced student-teacher ratios.

The Downy Woodpecker :: Woodpeckers Birds Animals Wildlife Essays

The Downy Woodpecker Habitat Downies take home in the United States and southern Canada. They have been recorded at elevations of up to 9,000 feet. The downies are not deep-forested birds, preferring deciduous trees. Open woodlands, river groves, orchards, swamps, farmland, and suburban backyards are all favorite haunts of the downy. Downies will also nest in city parks. About the only place you won't find them is deserts. The most attractive human dwelling sites are woodlands broken up by logged patches in a waterside area. Downies also enjoy open shrubbery with groves of young deciduous trees. Call(s) Like the hairy woodpecker, the downy beats a tattoo on a dry resonant tree branch. This drumming is the downy's song, though they do make some vocal noises. They have several single-syllable call notes which include tchick, an aggressive social note; a tick and a tkhirrr, which are alarm notes. There is also a location call, known as a "whinny", made up of a dozen or more tchicks all strung together. Scientific Names The downy woodpecker's scientific name is Picoides pubescens. There are also six particular downies with six particular scientific names all from different regions of the United States and southern Canada which I have listed below: southern downy / Dryobates pubescens Gairdner's woodpecker / Gairdneri pubescens Batchelder's woodpecker / Leucurus pubescens northern downy / Medianus pubescens Nelson's downy / Nelsoni pubescens willow woodpecker / Turati pubescens The downy woodpecker is sometimes reffered to as "little downy." Behavior Towards Humans The downy is unquestionably the friendliest woodpecker. A bird lover in Wisconsin described downies at their feeding station: "The downies will back down to the suet container on the basswood tree while I sit only a few feet away on the patio. Even when I walk right up to them, most downies will not fly away, but will simply scoot around the backside of the tree trunk and peek around to see what I am doing. If I press them, they will hop up the backside of the tree trunk and then fly to a higher branch. Food Besides being friendly, downy woodpeckers are our good friends for another reason. Most of the insects they eat are considered destructive to man's orchards and forest products. About 75% of their diet is made up of animal matter gleaned from bark and crevices where insect larvae and eggs lie hidden. While standing on that unique tripod of two legs and and a tail, downies hitch up and down tree trunks in search of a whole laundry list of insect pests. With their special chisel-like bills and horny, sticky tongues, downies are adept at plucking out great numbers of beetle grubs, insect cocoons, or batches of insect

My Cultural Identity Essay -- Cultural Identity Essays

My culture identity, as I know it as is African American. My culture can be seen in food, literature, religion, language, the community, family structure, the individual, music, dance, art, and could be summed up as the symbolic level. Symbolic, because faith plays a major role in our daily lives through song, prayer, praise and worship. When I’m happy I rely on my faith, same as when I’m sad, for I know things will get better as they have before. There are different disciplines within the humanities, but there is one that I feel that has influenced my cultural identity the most†¦music. I say music because from the start music told my culture’s history; informed others about deeds or events that had taken place, also, music was and continues to be important in comforting, healing, and during labor. â€Å"African American music has evolved through various eras and styles; the powerful melodic lines and the rhythm (the all-important rhythm) remained prominent and influential† (Powell, 2007, p.1). One way that I’ve celebrated and tried to connect with what I know as my culture is to attend Juneteenth Festival of the Carolinas. â€Å"According to Welcome to Juneteenth, â€Å"this is an annual four day event celebrated in the month of June at Independence Park, in Charlotte, North Carolina, hosted by Pape Ndiaye, proprietor of the House of Africa located in Charlotte, NC since 1997† (Juneteenth, n.d.). This family event unifies Africans, African-American, and non-African people and is celebrated with drummers, dancers, faith communities, local talent, special guests, and vendors that sell clothing, jewelry, food, books, art, music, furniture, purses, and much more. One may say we already have a day set aside to celebrate freedom. The Junete... ...x.php?option=com_content&view=article&id=133&Itemid=10 Lumbee Tribe of North Carolina (n.d.). Who Are The Lumbee? Retrieved March 7, 2014, from http://www.lumbeetribe.com/index.php?option=com_content&view=article&id=135&Itemid=115 Powell, A. (2007). The Music of African Americans and its Impact on the American Culture in the 1960’s and the 1970’s. Miller African Centered Academy, 1. Retrieved from http://www.chatham.edu/pti/curriculum/units/2007/Powell.pdf Main Section | Community Tool Box. (n.d.). Retrieved March 4, 2014, from http://ctb.ku.edu/en/table-of-contents/culture/cultural-competence/culture-and-diversity/main Welcome to Juneteenth. (n.d.). Retrieved March 7, 2014, from http://www.juneteenthofthecarolinas.com/ Whirty, R. (2007, March/April). The Lost Colony of Roanoke. Natives People. Retrieved from http://www.lost-colony.com/magazineNP.html

Sqc – Statistical Quality Control

Statistical quality control (SQC) The application of statistical techniques to measure and evaluate the quality of a product, service, or process. Two basic categories: I. Statistical process control (SPC): – the application of statistical techniques to determine whether a process is functioning as desired II. Acceptance Sampling: – the application of statistical techniques to determine whether a population of items should be accepted or rejected based on inspection of a sample of those items. Quality Measurement: Attributes vs Variables Attributes:Characteristics that are measured as either â€Å"acceptable† or â€Å"not acceptable†, thus have only discrete, binary, or integer values. Variables: Characteristics that are measured on a continuous scale. Statistical Process Control (SPC) Methods Statistical process control (SPC) monitors specified quality characteristics of a product or service so as: To detect whether the process has changed in a way that w ill affect product quality and To measure the current quality of products or services. Control is maintained through the use of control charts. The charts have upper and lower ontrol limits and the process is in control if sample measurements are between the limits. Control Charts for Attributes P Charts – measures proportion defective. C Charts – measures the number of defects/unit. Control Charts for Variables X bar and R charts are used together – control a process by ensuring that the sample average and range remain within limits for both. Basic Procedure 1. An upper control limit (UCL) and a lower control limit (LCL) are set for the process. 2. A random sample of the product or service is taken, and the specified quality characteristic is measured. . If the average of the sample of the quality characteristic is higher than the upper control limit or lower than the lower control limit, the process is considered to be â€Å"out of control†. CONTROL CHA RTS FOR ATTRIBUTES p-Charts for Proportion Defective p-chart: a statistical control chart that plots movement in the sample proportion defective (p) over time Procedure: 1. take a random sample and inspect each item 2. determine the sample proportion defective by dividing the number of defective items by the sample size 3. lot the sample proportion defective on the control chart and compare with UCL and LCL to determine if process is out of control The underlying statistical sampling distribution is the binomial distribution, but can be approximated by the normal distribution with: mean = u = np (Note – add the bars above the means used in all the equations in this section) standard deviation of p: sigmap = square root of (p(1 -p ) / n) where p = historical population proportion defective and n = sample size Control Limits: UCL = u + z sigmap LCL = u – z sigma p is the number of standard deviations from the mean. It is set based how certain you wish to be that when a l imit is exceeded it is due to a change in the process proportion defective rather than due to sample variability. For example: If z = 1 if p has not changed you will still exceed the limits in 32% of the samples (68% confident that mean has changed if the limits are exceeded. z = 2 – limits will be exceeded in 4. 5 (95. 5 % confidence that mean has changed) z = 3 – limits will be exceeded in . 03 (99. % confidence) c-Charts for Number of Defects Per Unit c-chart: a statistical control chart that plots movement in the number of defects per unit. Procedure: 1. randomly select one item and count the number of defects in that item 2. plot the number of defects on a control chart 3. compare with UCL and LCL to determine if process is out of control The underlying sampling distribution is the Poisson distribution, but can be approximated by the normal distribution with: mean = c standard deviation = square root of c here c is the historical average number of defects/unit Con trol Limits: UCL = c + z c LCL = c – z c Control Charts for Variables Two charts are used together: R-chart (â€Å"range chart†) and X barchart (â€Å"average chart†) Both the process variability (measured by the R-chart) and the process average (measured by the X bar chart) must be in control before the process can be said to be in control. Process variability must be in control before the X bar chart can be developed because a measure of process variability is required to determine the -chart control limits.R-Chart for Process Variability: UCLR = D4(R) LCLR = D3(R) where is the average of past R values, and D3 and D4 are constants based on the sample size -Chart for Process Average: UCLR = X bar + A2(R) LCL = X bar – A2(R) where X bar is the average of several past values, and A2 is a constant based on the sample size Other Types of Attribute-Sampling Plans Double-Sampling Plan: Specifies two sample sizes (n1 and n2) and two acceptance levels (c1 and c2 ) 1. f the first sample passes (actual defects c1), the lot is accepted 2. if the first sample fails and actual defects > c2, the lot is rejected 3. if first sample fails but c1 < actual defects c2, the second sample is taken and judged on the combined number of defectives found. Sequential-Sampling Plan: Each time an item is inspected, a decision is made whether to accept the lot, reject it, or continue sampling. Acceptance Sampling Goal: To accept or reject a batch of items.Frequently used to test incoming materials from suppliers or other parts of the organization prior to entry into the production process. Used to determine whether to accept or reject a batch of products. Measures number of defects in a sample. Based on the number of defects in the sample the batch is either accepted or rejected. An acceptance level c is specified. If the number of defects in the sample is c the atch is accepted, otherwise it is rejected and subjected to 100% inspection. Sqc – Statistical Quality Control Statistical quality control (SQC) The application of statistical techniques to measure and evaluate the quality of a product, service, or process. Two basic categories: I. Statistical process control (SPC): – the application of statistical techniques to determine whether a process is functioning as desired II. Acceptance Sampling: – the application of statistical techniques to determine whether a population of items should be accepted or rejected based on inspection of a sample of those items. Quality Measurement: Attributes vs Variables Attributes:Characteristics that are measured as either â€Å"acceptable† or â€Å"not acceptable†, thus have only discrete, binary, or integer values. Variables: Characteristics that are measured on a continuous scale. Statistical Process Control (SPC) Methods Statistical process control (SPC) monitors specified quality characteristics of a product or service so as: To detect whether the process has changed in a way that w ill affect product quality and To measure the current quality of products or services. Control is maintained through the use of control charts. The charts have upper and lower ontrol limits and the process is in control if sample measurements are between the limits. Control Charts for Attributes P Charts – measures proportion defective. C Charts – measures the number of defects/unit. Control Charts for Variables X bar and R charts are used together – control a process by ensuring that the sample average and range remain within limits for both. Basic Procedure 1. An upper control limit (UCL) and a lower control limit (LCL) are set for the process. 2. A random sample of the product or service is taken, and the specified quality characteristic is measured. . If the average of the sample of the quality characteristic is higher than the upper control limit or lower than the lower control limit, the process is considered to be â€Å"out of control†. CONTROL CHA RTS FOR ATTRIBUTES p-Charts for Proportion Defective p-chart: a statistical control chart that plots movement in the sample proportion defective (p) over time Procedure: 1. take a random sample and inspect each item 2. determine the sample proportion defective by dividing the number of defective items by the sample size 3. lot the sample proportion defective on the control chart and compare with UCL and LCL to determine if process is out of control The underlying statistical sampling distribution is the binomial distribution, but can be approximated by the normal distribution with: mean = u = np (Note – add the bars above the means used in all the equations in this section) standard deviation of p: sigmap = square root of (p(1 -p ) / n) where p = historical population proportion defective and n = sample size Control Limits: UCL = u + z sigmap LCL = u – z sigma p is the number of standard deviations from the mean. It is set based how certain you wish to be that when a l imit is exceeded it is due to a change in the process proportion defective rather than due to sample variability. For example: If z = 1 if p has not changed you will still exceed the limits in 32% of the samples (68% confident that mean has changed if the limits are exceeded. z = 2 – limits will be exceeded in 4. 5 (95. 5 % confidence that mean has changed) z = 3 – limits will be exceeded in . 03 (99. % confidence) c-Charts for Number of Defects Per Unit c-chart: a statistical control chart that plots movement in the number of defects per unit. Procedure: 1. randomly select one item and count the number of defects in that item 2. plot the number of defects on a control chart 3. compare with UCL and LCL to determine if process is out of control The underlying sampling distribution is the Poisson distribution, but can be approximated by the normal distribution with: mean = c standard deviation = square root of c here c is the historical average number of defects/unit Con trol Limits: UCL = c + z c LCL = c – z c Control Charts for Variables Two charts are used together: R-chart (â€Å"range chart†) and X barchart (â€Å"average chart†) Both the process variability (measured by the R-chart) and the process average (measured by the X bar chart) must be in control before the process can be said to be in control. Process variability must be in control before the X bar chart can be developed because a measure of process variability is required to determine the -chart control limits.R-Chart for Process Variability: UCLR = D4(R) LCLR = D3(R) where is the average of past R values, and D3 and D4 are constants based on the sample size -Chart for Process Average: UCLR = X bar + A2(R) LCL = X bar – A2(R) where X bar is the average of several past values, and A2 is a constant based on the sample size Other Types of Attribute-Sampling Plans Double-Sampling Plan: Specifies two sample sizes (n1 and n2) and two acceptance levels (c1 and c2 ) 1. f the first sample passes (actual defects c1), the lot is accepted 2. if the first sample fails and actual defects > c2, the lot is rejected 3. if first sample fails but c1 < actual defects c2, the second sample is taken and judged on the combined number of defectives found. Sequential-Sampling Plan: Each time an item is inspected, a decision is made whether to accept the lot, reject it, or continue sampling. Acceptance Sampling Goal: To accept or reject a batch of items.Frequently used to test incoming materials from suppliers or other parts of the organization prior to entry into the production process. Used to determine whether to accept or reject a batch of products. Measures number of defects in a sample. Based on the number of defects in the sample the batch is either accepted or rejected. An acceptance level c is specified. If the number of defects in the sample is c the atch is accepted, otherwise it is rejected and subjected to 100% inspection.

The of Professionalism Essays

The of Professionalism Essays The of Professionalism Essay The of Professionalism Essay Law Enforcement What is considered professionalism in law enforcement? The Five-Xis Is based on five traits: Integrity, Intellect, Industry, Initiative, and Impact. Integrity, the first of the Five-Xis, Is defined by doing right when no one Instructs you to do so. Integrity Is considered the highest of human achievements. It Is represented through core values such as trustworthiness, courage, honesty, tolerance, and self-discipline. The second of the Five-Xis, Intellect, is the credibility of a law enforcement leader. This knowledge is in three parts: procedures, discretion, and conceptual attitudes relevant to police education (C. A. R. P. E. ). The third is Industry, which is one of the most important examples someone in law enforcement can set. They are the ones who set the pace for the industry. They are those who possess work habits and are activity driven. They need to realize that work in a fundamental sense is Just applied effort. Next is Initiative, which action is essential. They need to seize the moment and take control. It Is not watching and waiting, but seeing and doing. There are three types of people In the world: those who watch It happen, those who make it happen, and those who wonder what happened. To have Annihilative you have to make It happen and problem solve despite the criticism you might receive. The last Is Impact, which relies on confidence, competence, and a positive attitude. They have a positive Impact on there.

Prejudice in to kill a mockingbird

Prejudice in to kill a mockingbird It can be argued that the most prominent theme in 'To Kill A Mocking Bird' is prejudice. It is directed towards groups and individuals in the Maycomb community. Prejudice is linked with ideas of fear and injustice.There was surely no nation in the world that holds "racism" in greater horror than does the United States at the time. Fear and paranoia led to the Whites believing that the Blacks desired all the whites had, including their women.A mockingbird is a harmless bird that makes the world more pleasant. In To Kill A Mockingbird by Harper Lee, the mockingbird symbolizes Boo Radley and Tom Robinson, who were both peaceful people who never did any harm.Boo Radley went through his life never wanting to hurt a fly. He left gum, pennies, and dolls for Scout and Jem. He sewed Jem's pants and left them on the fence so Jem could get them easily.English: Skinheads Against Racial Prejudice (unive...Scout on the other hand doesn't care abouthow much money Walter has but about his potential to be a friend. Shedoesn't let irrelevant things like money cloud her judgment of people.The most typical of all prejudice views is that of race. Anexample of this is during Tom Robinsons trial. Tom was a black man accusedof raping a white woman, a crime that is punishable by the death penalty.Even though all the facts proved that he didn't do it, the jury still foundhim guilty "beyond a reasonable doubt". Tom's life has been sacrificed toracism by the people who were there to protect him. The justice systemdidn't allow this man to have a fair trial because of the color of his skin.They disregarded his credibility or that of the other witnesses, all theycould focus on...

Free Essays on Lies

Everyone in this world has told a lie at some point in their life, but the lies are told for different reasons. These reason have positive and negative results. Some may help, but some may destroy. The lies that may be helpful at time are those that save and protect. Those that destroy are lies that cover and hurt. Sometimes people lie to save relationships. These lies may keep two people together, and save them from losing their friendship or marriage. Small white lies can be of a great benefit under these circumstances. Not only do these lies keep the relationship together, they may also spare the children, of these married people, from the pain of losing a parent. An example of a white lie is when two friends fight and an outside person tells one of them that the other is sorry. This action could save the friendship. Lies that protect are told to spare someone’s feelings from being hurt or to protect him or her from doing something that is not good. This kind of lie is also a white lie and can help others. An example when girlfriend or boyfriend asks, â€Å"How do I look?† and you would say, â€Å"You look just great!† Your reply may not be 100% honest, but it is better than hurting someone’s feelings. A third type of a lie is the lie that is told to cover. This lie is never good. It is meant as a means of getting what you want and avoiding the consequences of the bad things you may have done. An example is when you want money from your parents and you tell them that you need money to pay club dues so you can have money to buy some thing else. The last type of lie is that meant to hurt. Their sole purpose is to make someone feel bad and to hurt them. A very popular example is when a girl tells her friend that she saw her boyfriend flirting with another girl. This seems to make the girl who told the lie feel good. This is always wrong. People should never try to hurt each other and they should never resor... Free Essays on Lies Free Essays on Lies Everyone in this world has told a lie at some point in their life, but the lies are told for different reasons. These reason have positive and negative results. Some may help, but some may destroy. The lies that may be helpful at time are those that save and protect. Those that destroy are lies that cover and hurt. Sometimes people lie to save relationships. These lies may keep two people together, and save them from losing their friendship or marriage. Small white lies can be of a great benefit under these circumstances. Not only do these lies keep the relationship together, they may also spare the children, of these married people, from the pain of losing a parent. An example of a white lie is when two friends fight and an outside person tells one of them that the other is sorry. This action could save the friendship. Lies that protect are told to spare someone’s feelings from being hurt or to protect him or her from doing something that is not good. This kind of lie is also a white lie and can help others. An example when girlfriend or boyfriend asks, â€Å"How do I look?† and you would say, â€Å"You look just great!† Your reply may not be 100% honest, but it is better than hurting someone’s feelings. A third type of a lie is the lie that is told to cover. This lie is never good. It is meant as a means of getting what you want and avoiding the consequences of the bad things you may have done. An example is when you want money from your parents and you tell them that you need money to pay club dues so you can have money to buy some thing else. The last type of lie is that meant to hurt. Their sole purpose is to make someone feel bad and to hurt them. A very popular example is when a girl tells her friend that she saw her boyfriend flirting with another girl. This seems to make the girl who told the lie feel good. This is always wrong. People should never try to hurt each other and they should never resor...

Poverty Issues Essay Example | Topics and Well Written Essays - 1250 words

Poverty Issues - Essay Example Poverty in developed countries is obvious in a set of social problems together with homelessness and the perseverance of ghetto housing groups. There are several factors that have been mentioned to explain why poverty takes place. However, no single reason has gained universal recognition. At the international level, some highlight global systemic causes, for example, aid, trade and debt, which are the focal point of the Make Poverty History campaign. Whereas others point to national level deficits of public administration and financial management, which is the focal point of the Good Governance program of the international financial institutions. At the national level, some point to individual factors, including drug use, work ethic and education level as the major reason of poverty, while others points to the insufficient social services and strategies inclined in favor of the wealthy and social leaders as a cause of continuing poverty. Other cause of poverty includes environment, health care, government inefficiency and other social factors. (Jeffery Sachs, 2005). Those living in poverty and wanting a way in to necessary health services, suffering hunger or even starvation, go through mental and physical health problems which make it difficult for them to perk up their circumstances. One third of deaths, about 18 million people annually or 50,000 each day are because of poverty related factors. Altogether 270 million people, the majority of them women and children, have been expired as a result of poverty ever since 1990's. Those living in poverty undergo lower life expectation. Every year, approximately 11 million children surviving in poverty pass away before their fifth birthday. Those living in poverty frequently endure from hunger and 800 million people go to bed, starving every night. Poverty also boosts up the danger of homelessness. There are more than 100 million street children wandering all alone in the world. Increased risk of drug abuse is also a reason which is linked with poverty. Diseases of poverty are the sign of the vibrant relationship between poverty and poor health. Whereas such transferable diseases effects directly from poverty, they also perpetuate and intensify insolvency by weakening personal and national health and monetary resources. Such as, malaria reduces GDP growth by up to 1.3% in some rising countries and by killing tens of millions in sub Saharan Africa. AIDS it self terrorize the economies, social formations and political constancy of every society.Low income and possessions levels weaken the capability of governments to charge taxes for public service terms, adding to the brutal circle connecting the causes and effects of poverty. Lack of necessary communications, poor education and health services and poor hygiene contribute to the continuation of poverty. Poor access to reasonable public education can direct to low levels of literacy, further establishing poverty. Weak public service provision and high levels of poverty can amplify country's weakness to natural calamities and make states more defenseless to shocks in the international economy, for example, those linked with rising fuel prices or declining goods and services costs. The ability of the state is

Under the economic globalization, who should take the responsibility Essay

Under the economic globalization, who should take the responsibility to make the music education actually valuable for Chinese p - Essay Example Music in Confucianism was regarded as one of the means of governance, as well as a significant factor in educating people and in achieving social harmony. But the situation has changed since 1912, when music education moved into the category of compulsory subjects. Under the economic behavior, also all the parents want their children have a bright future; therefore lots of music teachers became ‘money makers’ because of this policy. The music as a creative art should give more space to students. Nowadays National Entrance Exam forced some of Chinese students study music no longer as an creative arts, they are practicing it for pass the exam with high mark, and they are passing it because of the music skill can give them more 20 credits compare with the others who can’t study music or know music skills as good as they are. Students suffer in the classroom, because music education is not enjoyable anymore. Nowadays students are seeking for material well-being; they do not actually care about arts and music, in particular. Even in an era of globalization such widespread phrase as â€Å"Europe is not America, America - not Asia† is relevant. Especially it seems strange that under the comprehensive globalization, China preserves its national identity. Suffice it to mention the peculiarities of the Chinese mentality, Chinese economy, developing rapidly after the Communist, unique educational system; but the Chinese musical art deserves paying special attention. Besides, the purposes of music education, according to the Ministry of Education in China, are directly connected with the fact that Chinese society still can not reject the idea of communism building. So, the tendency â€Å"Art for Art sake† is obvious. ... It also absorbed elements of the music of people that were part of the Chinese empire (the Uighurs, Tibetans, Mongols, Manchu, etc.), and, in turn, greatly influenced the music of Korea, Japan and some nations of Southeast Asia and the Pacific. Chinese music has evolved since ancient times under the influence of religious, philosophical and ideological doctrines (Reimer, 1989). In Confucian treatises the concept of cosmological nature of music was developed, its social and political role was highlighted. Music in Confucianism was regarded as one of the means of governance, as well as a significant factor in educating people and in achieving social harmony. According to the ideas of Taoism, the music was to facilitate the natural expression of psycho-emotional reactions of man, its fusion with nature. 2. The Consequences of the New Education Policy The school music education, which was developed during one of the most complex, saturated with global cataclysms, period in the history of the country, gradually became a public system, marked by both significant achievements and serious shortcomings. Nowadays the assessments of achievements of challenges facing China’s school education are prerequisites for successful reform. Music became a compulsory subject in secondary schools of China in 1912. In accordance with the suggestions for the educational course of the country, made by Education Minister Tsai Yuanpey (1912), the role of artistic education plays the significant role in shaping the personality, thus, particular attention should be paid to music teaching in secondary schools. This document determined a new status of the given

Practices as a social worker on values, beliefs and experiences Personal Statement

Practices as a social worker on values, beliefs and experiences - Personal Statement Example In this context, though there are scientific interventions like value education, the perception of these interventions would again depend on the experience through which a person has come through. Walters (2010) , in his article on ‘An Introduction to Use of Self in Field Placement’ has cited the case of a social work student who was able to produce remarkably superior quality field reports. The reason that the author cites for this is that the poorer socioeconomic situation of the student which helped him to draw experiences from himself and apply himself while preparing the reports. Further, Dewane (2006) has emphasised on the need for integrating knowledge, values and skills with life experiences for being an effective social worker. Thus personal experience of a social worker will add genuineness and authenticity to social work practice. A social worker will be able to connect oneself more to the social issue with added personal experience. In general, experiences will influence ones world view. However, a social worker must be able to analyse a social issue from different perspectives. It must also be ensured that personal experiences do not lead to views wh ich are

Religion and Science Essay Example | Topics and Well Written Essays - 500 words - 1

Religion and Science - Essay Example There are have arisen conflicts between the two with one looking at the other to be in the wrong side of belief. To this extent, science identifies itself as the fundamental principle of life while religion also considers the fact of being the fundamental principle of life, which follows by the criticisms of each other that have seen a brewing conflict ensue. In his principles, he also sees science and religion as two worlds that run apart. It is evident by the dominant spheres, which each aims at dominating. Science aims for the physical world while religion aims at the spiritual life. There are issues believed in that science, religion can dialogue and reach a consensus, and discuss at their general points the boundaries established in each. These are all due to their independence and unending conflicts. Explaining the debate on the origin of the earth where science believes to some extent that it might originate as God’s creation while religion supports the origin of it from God. The creations in the world are what create the difference and lead to conflicting. The integration aspect expects that science and religion can reach a general point since they depend on each other. The two aspects of dialogue and integration reflect more on the relationship that science shares with religion. That science provides data and other aspects of helping religion enrich its target population and religion too helps science control conditions and creates a basis for reference. Religion and science are dominantly different and though there are conditions that are putting them together; they have not yet succeeded in exploring the differences between the two. In the past, natural sciences vastly invested into religious meanings that led to many antireligious results that held no religious significance. A difference has existed that has held over time. This difference has seen a shift in boundaries with time. A nineteenth century

Cezanne's treatment of pictorial depth Assignment

Cezanne's treatment of pictorial depth - Assignment Example The essay "Cezanne's treatment of pictorial depth" concerns the painting of Cezanne. His compositions reveal innovative techniques such as the use of colour and intensity, as well as the interaction between the three-dimensional with the two-dimensional plane of the composition for creating pictorial depth. Important non-traditional elements in his work relate to the use of distortion and flat surfaces in his paintings. Paul Cezanne’s art consisted of steadfast searching and growth, and was not a process of creating masterpieces easily. He struggled with himself and his medium and produced classical works in which he achieved detachment by mastery over chaotic impulses. The restlessness of his early art gave way to Impressionism which guided Cezanne to use nature as his inspiration. The Provencal landscape captivated Cezanne more than any other. During the 1890s, he spent most of his time in Aix, however, making frequent trips to Paris. In the summer of 1896, at a health resor t in Talloires on Lake Annecy, he painted the following composition of the lake seen in Figure 1, â€Å"one of the most impressive of all the landscapes that Cezanne painted outside Provence†. In figure 1. above, of lake Annecy, the water’s surface appears dense and solid, its effect is motionless and tectonic or caused by structural deformation of the earth’s crust, similar to the mountain in the background which appears as an immense solid mass. Before composing this painting, Cezanne absorbed the scene, registering colour sensations.

Religion and Science Essay Example | Topics and Well Written Essays - 500 words - 1

Religion and Science - Essay Example There are have arisen conflicts between the two with one looking at the other to be in the wrong side of belief. To this extent, science identifies itself as the fundamental principle of life while religion also considers the fact of being the fundamental principle of life, which follows by the criticisms of each other that have seen a brewing conflict ensue. In his principles, he also sees science and religion as two worlds that run apart. It is evident by the dominant spheres, which each aims at dominating. Science aims for the physical world while religion aims at the spiritual life. There are issues believed in that science, religion can dialogue and reach a consensus, and discuss at their general points the boundaries established in each. These are all due to their independence and unending conflicts. Explaining the debate on the origin of the earth where science believes to some extent that it might originate as God’s creation while religion supports the origin of it from God. The creations in the world are what create the difference and lead to conflicting. The integration aspect expects that science and religion can reach a general point since they depend on each other. The two aspects of dialogue and integration reflect more on the relationship that science shares with religion. That science provides data and other aspects of helping religion enrich its target population and religion too helps science control conditions and creates a basis for reference. Religion and science are dominantly different and though there are conditions that are putting them together; they have not yet succeeded in exploring the differences between the two. In the past, natural sciences vastly invested into religious meanings that led to many antireligious results that held no religious significance. A difference has existed that has held over time. This difference has seen a shift in boundaries with time. A nineteenth century

Phonemic Inventories Assignment Example | Topics and Well Written Essays - 750 words

Phonemic Inventories - Assignment Example On the other hand, consonants are speech sounds produced with significant restriction of airflow via the vocal tract (Bischoff & Fountain, 2014). Combination of vowels and consonants form syllables in the languages of the world as indicated in the IPA. Moreover, the authors define phonemic inventory as the assessment of the size of the phonemes or distinctive sounds in a language and their articulation. Minimal pairs are sets of phrases or words which differ in only a single element such as chroneme, toneme, or phoneme, and have divergent meanings in a language and are used to exemplify that two phones can constitute two distinct phonemes in a particular language. Bengali is spoken in eastern India and Bangladesh. As a language used by a good proportion of people, the language contains various speech sounds, stress, articulation and its study will therefore improve my understanding of phonetics and phonology while comprehending how geography affects formulation and articulation of speech sounds. In the consonant inventory in Bengali, fricatives and plosives differ in articulation and aspiration (Anderson,  1917). The voicing of the postalveolars contrasts by consonant nature as illustrated in the consonant inventory below; Evidently, the consonant inventory of Bengali differs from the one presented in the IPA journal in that it does not have germinates and that differentiate the postalveolar sound (Khan,  2010). Moreover, velar, lateral approximant and glottal consonants are lacking. The approximant in the IPA journal is and j in the Bengali inventory (Milles, 2012). However, they are similar since both contain the basic plosives, fricatives, nasal and approximant. With 12 consonants, Bengali joins the 15.80% (of 563) of languages considered to be of small consonant inventory a category that involves 83 languages whose consonant size is between 6 and 14 (Ian, 2013). Bengali differentiates vowels based on

Chemicals in Food Essay Example for Free

Chemicals in Food Essay Those hard-to-pronounce chemicals that are in the list of ingredients on the label are used for more than just flavoring, appearance, and preserving the food (Food Additives). Those additives are used in some other very harsh items such as bug repellent (Food Additives). However, there are some simple and sustainable options that can help consumers avoid running into harsh chemicals and additives that may be lurking in their food. These changes will not only help them make healthier and safer choices, but also help them to save some money in the long run. Many unanswered questions will be addressed within this paper such as: What are the hormones in some of the foods such as dairy and meat and what exactly are they used for? How do they affect us? What can consumers do to avoid purchasing these items? How can one avoid unsafe drinking water and are additives really that bad? According to Credit Loan, Americans consume on average 110 pounds of red meat a year, 600. 5 pounds of dairy products (not including cheese), and 31. 4 pounds of cheese a year (Food Consumption in America). The common theme here is that all of these food groups come from cows. It is not, however, that we are eating cattle and beef, but what that cattle is being fed into its body. â€Å"In 2005, 32. 5 million cattle were slaughtered to provide beef for U. S. consumers. Scientists believe about two-thirds of American cattle raised in for slaughter today are injected with hormones to make them grow faster (Sustainable Table). † This does not include hormones used for the increased production of dairy/milk. With just beef alone, there are six natural and artificial hormones that are injected into cattle and they include: Oestradiol, Progesterone and Testosterone (these are natural occurring hormones). Then there are Zeranol, Trenbolone and Melengestrol (these are artificial hormones) (Sustainable Table). Although there has not been any significant case studies done on these hormones, scientists believe that these hormones pose some threats to human health. â€Å"The Committee [European Union’s Scientific Committee on Veterinary Measures Relating to Public Health] also question whether hormones residues in the meat of ‘growth enhanced’ animals can disrupt human hormone balance, causing developmental problems, interfering with the reproductive system, and even leading to the development of breast, prostate or colon cancer (Sustainable Table). Scientists also believe that those at the greatest risk are children, women who are pregnant and unborn babies (Sustainable Table). â€Å"Hormone residues in beef have been implicated in the early onset of puberty of girls, which could put them at greater risk of developing breast and other forms of cancer† (Sustainable Table). However, health risk of humans is not the only factor. Aquatic ecosystems are being greatly affected by hormone residue in the manure of cows by contaminating run-off and groundwater. Recent studies have demonstrated that exposure to hormones has a substantial effect on the gender and reproductive capacity of fish, throwing off the natural life cycle† (Sustainable Table). The United States and Canada, however, continue to allow the growth hormones to be injected. The European Union does not, and they strictly prohibit trade with the U. S. and Canada on hormone-treated beef. Injecting growth hormones into cattle is not the only kind of hormone they are being given either. RBGH is a hormone that gets injected into cattle for an increase production of milk. Developed and Manufactured by Monsanto Corporation, this genetically engineered hormone forces cows to artificially increase milk production by 10 to 15 percent† (Sustainable Table). The natural hormone for growth and lactation is Bovine Somatotropin. When it is man-made it is known as rBST or better known as rBGH. â€Å"Approximately 17% of all cows in the US are given the artificial growth hormone† (Sustainable Table). FDA approved the drug in 1993. However, â€Å"According to opponents of the drug, effects of rBGH were never properly studied,† (Sustainable Table). RBGH poses many health risks to the cows and what is effecting the cows, could quite possibly effect us. â€Å"Problems included an alarming rise in the number of deformed claves and dramatic increases in mastitis, a painful bacterial infection of the udder which causes inflammation, swelling, and pus and blood secretions into milk† (Sustainable Table). IGF-1 (Insulin Growth Factor-1) is a naturally occurring hormone in human bodies. It is also is in rBGH. â€Å"Humans also naturally have IGF-1, and increased levels in humans have been linked to colon and breast cancer† (Sustainable Table). America consumes about 31. 4 pounds of cheese every year, along with 600. 5 pounds of other dairy products (Food Consumption in America). â€Å"In 2006, the United States dairy industry produced over 20 billion gallons of milk. This milk is pasteurized and sold, or transformed into cheese, butter, cream, and ice cream for consumers in the U. S. and around the world† (Sustainable Table). However, it was never this simple. Back in the 1700’s milk was not a familiar drink and was not studied enough. The conditions under which the milk and the cows were kept were not clean. There was no form of refrigeration and insects could easily be accessible to milk that was left out (Sustainable Table). It was not until the end of the 19th century when pasteurization was invented (Sustainable Table). Pasteurization means â€Å"to expose (a food, as milk, cheese, yogurt, beer, or wine) to an elevated temperature for a period of time sufficient to destroy certain microorganisms, as those that can produce disease or cause spoilage or undesirable fermentation of food, without radically altering taste or quality† (Dictionary). However, this may not be enough. Farmers are continuing to use the rBGH, antibiotics, and high-concentrated feed for the increase production of milk (Sustainable Table). In a way, it is benefitting the consumer. By injecting these artificial hormones, the cows are producing almost four times as much milk as they previously were, in turn, is cutting down the cost of milk and other dairy products (Sustainable Table). â€Å"The biggest fear surrounding this breeding technique is the eventual inability to ward off viruses or mutation in the dairy cow’s DNA chain, resulting in rapid spread of disease and possible death† (Sustainable Table). Because of the growing concern of all the use of artificial hormone, slowly, more dairies are turning to organic. â€Å"While organic milk makes up only 1% of the dairy market, demand has increased 477% between 1997 and 2003† (Sustainable Table). Hopefully, the trend continues to increase so the food becomes less processed and more natural at healthy level. For the most part, Americans include water in their daily diet somehow during the day. Whether it is rinsing their mouths out from brushing their teeth, drinking water, or using it to swallow down a pill, water is a part of most people’s life style. However, it is not as clean as most people would think. A team of researchers out of Washington State has found traces of illicit drugs, hormones, and cooking spices in drinking water. The team found that certain spices â€Å"spike during the holidays. â€Å"For instance, thyme and sage spike during Thanksgiving, cinnamon surges all winter, chocolate and vanilla show up during the weekends (presumably from party-related goodies), and waffle cone and caramel-corn remnants skyrocket around the Fourth of July† (Cocaine, Spices, Hormones Found in Drinking Water). But as stated earlier, harmless Cooking spices are not the only traces of remnants in drinking water being found/. â€Å"Around the world, scientists are finding trace amounts of substances-from sugar and spice to heroin, rocket fuel, and birth control-that might be having unintended consequences for humans and wildlife alike† (Drinking Water). One may be wondering how drugs get into the drinking water system. â€Å"After a person has taken drugs such as cocaine, heroin, marijuana, and ecstasy, active byproducts of these substances are released into the sewage stream through that person’s urine and feces. These byproducts, or metabolites, are often not completely removed during the sewage –treatment process†¦Ã¢â‚¬  (Drinking Water). This not only may post a threat to human health, but it poses a threat to the marine life as well. â€Å"Though these drugs traces are still tiny, it’s possible that the potent residues could be toxic to freshwater animals† (Drinking Water). There are still strict regulations from the EPA on the contaminates in drinking water that must be followed. The EPA claims that more than 90 contaminants must be filtered out of drinking water systems (Drinking Water). Richard Keil said something that everyone can take into consideration. He stated; â€Å"’that everything you do is connected to the watershed† (Drinking Water). It is a simply message with a very strong meaning; No matter what one person eats, takes, or drinks, it is somehow later going to affect something or somebody and without any control. Almost half of an American’s diet includes fruits and vegetables. About 273. 2 pounds of fruit and 415. 4 pounds of vegetables are eaten (Food Consumption in America). However, these suppose to be healthy foods could be potentially dangerous to our health. Pesticides are used on almost every major crop. â€Å"Pesticides are chemicals used to eliminate or control a variety of agricultural pests that can damage crops and livestock and reduce farm productivity. The most common pesticides are insecticides (to kill insects), herbicides (to kill weeds), rodenticides (to kill rodents), and fungicides (to control fungi, mold, and mildew)† (Sustainable Table). Pesticides are not a new invention at all. They date back all the way to the ancient Sumerians’ time. The makeup of pesticides ranged anywhere from elemental sulfur, to chemicals such as arsenic and lead (Sustainable Table). It was not until the 19th century that the use of pesticides became more geared to natural techniques such as â€Å"roots of topical vegetables and chrysanthemums† (Sustainable Table). DDT (Dichloro-Diphenyl-Trichloroethane) was discovered in 1939 and was extremely successful, however a huge concern came into effect with its health impact on humans (Sustainable Table). Not only are the pesticides being sprayed on the fruits and vegetables that are eaten, but it also be sprayed on grains as well. This may not seem like that big of deal on a global scale, but when one looks at the cycle of how it effects humans, it is quite concerning. Grains are in all breads, no matter if it is super bleached or straight off of the wheat barley. Therefore, it is a direct source. However, the grains are being fed to livestock as well. In fact, 66% of the grain grown in the U. S. is used for livestock feed (Sustainable Table). â€Å"This grain is grown by intensive farming operations that use massive quantities of pesticides while producing problems such as pesticide resistance in insects and weeds, and pollution of nearby water supplies with toxic chemicals† (Sustainable Table). It is not as common to use manure as a type of soil, but it is definitely not out of the question. The tainted manure could be used to grow the fruits and vegetable crops, that will then again be sprayed with more pesticides, which after awhile, the dead material and soil will run off as ground water, or to a straight water supplies and pollute the water (Sustainable Table). As stated earlier, this will not only affect marine life, but human drinking water. When and if this water goes through sewage treatment plants, not all of the pesticide chemicals will be removed. So not only will humans be ingesting chemicals from the fruits and vegetables, but possibly their drink and meat as well! Pesticides are a public health concern and have been linked to a range of diseases and disorders. Many chemical pesticides are known to cause poisoning, infertility and birth defects, as well as damage to the nervous system and potentially cause cancer† (Sustainable Table). The most susceptible to these conditions are small children. â€Å"According to data collected by the Centers for Dise ase Control and Prevention, the average American child between ages six and eleven carriers four times the acceptable level of pesticides called organophosphates (which are known to cause nerve damage)† (Sustainable Table). The CDC also conducted a blood and urine test in 2004 and that in 100% of the subjects pesticide residues were found. â€Å"Two insecticides- chlorpyrifos and methyl parathion- were found at levels up to 4. 6 times greater than what the U. S. government deems acceptable† (Sustainable Table). Somebody has to take the blame for these absurd high numbers, the question is who to blame. Pesticide use goes through a rigorous test before any products that came in contact with pesticides are even put out on the shelves. Pesticides are tested and approved for use by the Environmental Protection Agency (EPA), which establishes â€Å"tolerances,† or maximum residue levels, that limit the amount of a given pesticide that can safely remain in or on a food. The Food and Drug Administration (FDA) is then responsible for monitoring pesticide levels on fruits and vegetables, while the Department of Agriculture (USDA) is charged with the task of surveying pesticide residues in meat, eggs , and dairy products† (Sustainable Table).

Control The Speed Of The DC Motor Engineering Essay

Control The Speed Of The DC Motor Engineering Essay Direct current (DC) motor is applied in a wide range of applications particularly in automation technology due to minimal voltage consumption. In the proposal DC motor plays an effective role in Hardware implementation. The main principle behind the project is to use the cascade control to run the DC motor; its one of best feedback controllers. For estimating the velocity and the armature current of the DC motor with 24 volts and a dsPIC Microcontroller is programmed .The above all operation is done in a closed control loop function. Table of Contents 1.2 Objective 2. Specific Aims of the project Chapter 1 1. Introduction 1.1 Background Brushed DC Motor DC motor model Digital control of dc motor Advantages of dc with respect to speed control Analogue control of dc motor 2.1 ds PIC dsPIC30f 3010 2.2 MPLAB IDE 3. Design and Research Cascade control Currentloop dynamics Speed loop dynamics 3.1 Components for controlling 24v brushed Dc motor 3.1. Flexible inverted board 3.2.1 Generating PWM wave forms 3.1.2 H-Bridge converter 3.2 Software techniques used in DC motor Programming microcontroller in Flexible inverted board 4. Results and Discussion 5. Conclusion 6. Appendix List of Figures FIGURE 1: Operation of BRUSHED DC Motor FIGURE2: General block diagram of speed loop and current loop of DC Motor FIGURE3: H-bridge converter with different voltage VÃŽÂ ± VÃŽÂ ² CHAPTER 1 1. INTRODUCTION 1.1 Objective The main function of the project is to control the speed of the DC Motor using a dsPIC30f3010 microcontroller. For that implement a separate hardware to satisfy the main function of the project. 1.2 Specific Aim of the project In order to achieve the main core of the project, construct Hardware for controlling the speed control of DC motor. The main hardware requirements are ds PIC microcontroller ICD interface connector for system interface DC power supply MOSFET Current sensors The above components are required to construct a hardware called Flexible Inverted Board [4]. 1.3 OUTLINE OF PROJECT Step1 In this paper a flexible inverted board is constructed with the series of hardware components Step2 Then communicate the Flexible inverted board with system using MPLAB IDE software with ICD-3 interface [4].the language used in the MPLAB software is C-language. Step3 The speed loop and the current loop are the two important functions for controlling the speed of the Dc motor. In our project the key point is to control both the loops by C-programming language using MPLAB ICD-3. The speed loop of the microcontroller is called speed controller and the current loop of the microcontroller is called current controller. CHAPTER 2 THEORITICAL TECHNIQUES AND THEIR REVIEWS 2 Background 2.1 Brushed DC Motor In automotive industries DC motor is used widely in fuel pump control, electronic steering control, engine control and electric vehicle control [6]for its cost effective and it is used in many applications like pulp and paper industries, fan pumps, press, winder motors [2],home appliances, washers, dryers and compressors[6] are some of the best examples. DC motor is one of the important hardware employed in this paper, it consists of a rotor and stator, and the parts are placed in a permanent magnetic field. Commutator and brush are placed in between the rotor and stator. Positioning the brush at a particular direction in the rotor is classified into some categories and they are radial, trailling or leading [3] positions. When the rotor rotates the commutator and carbon brush interface at a point, which produces an enormous amount of magnetic field from the brush of the motor and it produces current to the armature winding of the Dc motor. FIGURE 1: Operation of BRUSHED DC Motor[a] 2.2 DC Motor model [8] Each motor will have different specification and requirements. According to motor requirements and details the model can be designed. The aim of motor model, deals with controlling the applied voltage of both speed and current. The basic model for a Dc Motor is shown below FIGURE2: DC Motor model The above diagram is a simple RL circuit. RL circuit is called resistance inductance circuit and a 24v DC Motor. All these components combine to form RL circuit. Now the derivation part of the RL circuit is explained below T (t) = J w is the Angular velocity J is the moment of inertia B is the friction T is the armature Torque T (t) = (t) is the Torque constant is Armature current According to Kirchhoffs law (t) (t) = (t) + and are the inductance and resistance for the armature current (ia) The electromotive of the motor can be determined by multiplying the back emf with speed The relationship for the electromotive force is shown below (t) = The state model for any DC motor using ia and w (speed) is mentioned below. = + 2.3 ds PIC -microchip ds PIC stands for Programmable Interface Controller or programmable intelligent computer, which act as an important controlling unit for entire system. The main objective of this project is to make the ds PIC to generate 6PWM waveform. In an ideal condition the waveform from the pulse width modulation can control the H-bridge converter. It not only serves as an interface controllers but also plays a role of a programmable logic controller (PLC). [16,20] ds pic has a memory of 16bit microcontroller that has two major functions. Firstly it can act as a software part serving software functions and the other is a hardware part serving hardware functions. The input signals that are attain from the feedback serve system are received by the software part which in turn utilizes the codes that are written on the chip on C language to analyze the input and operate the hardware. Finally the software makes sure the hardware runs based on the software functions to gain the required output. [18, 20] Our project concentrated on working experiments that were run at lab conditions. Since a couple of systems have certain differences from the stimulation that have been run in real conditions compared to ideal conditions. This in turn is the working of the microcontroller. dsPIC30F 3010, 2010 4011 and 3012 are the series of chips that have been available in the Lab. The letter F in ds PIC30F and such chip states that the chip contains flash memory. The reason for considering this flash memory product is because 30F has an ex-ordinary performance when compared to EPROM (Erasable Programmable Read-Only Memory) and one time programmable chips (OTP). This has been a major requirement for the running of this project to get the required output. 16-bit modified Harvard architecture has been added to the CPU containing ds PIC30F for utilizing the data and upgrading the set of guide lines for running digital signal processing (DSP) [14]. There is a lengthy flexible opcode field which has been installed in the CPU that has a 24 bit wide user programmer memory area and the total addressing speed can go up to 4MÃÆ'-24 bit. This programming model has sixteen 16bit working registers in ds PIC30F chip. There are two classes of introduction controlling unit that have been integrated and used for execution they are integrated and used for execution [2]. 2.3.1 dsPIC30F 3010 This section is about the pin configuration and the components available in dsPIC30F3010 microcontroller. Normally the memory allocation in dsPIC30F 3010 can classified in to three categories they are SRAM in Bytes EEPROM in Bytes Programmable memory in Bytes/instruction 2.3.1.1 SRAM SRAM stands for static RAM (Random Access Memory). According to the tabulation shown below the data limit for static RAM should not exceed 1024 bytes. The memory in the function can classified in two types they are X Data RAM Y Data RAM The static RAM uses X -RAM and Y_RAM for storing datas. 2.3.1.2EEPROM The memory allocation for EEPROM is same as static RAM. In read only memory one of the important types of ROM used to store memory is EEPROM. The main function of this ROM is based on two parameters they are endurance and retention [2]. Endurance is to retain the data even after the ROM fails. Therefore the data cant be deleted at any instant. Time period is required to store data that is taken care by retention [2]. 2.3.1.3Program memory In a particular program ds PIC30f microcontroller has a separate memory allocation for storing both the address and data. The memory limit for the program memory is 24K. program address space anda data address space TABLE 1: Tabulation for memory allocation in ds PIC30f3010 The pin configuration of dsPIC30f3010 is described below FIGURE 3: Pin configuration of dsPIC30F 3010[2] Pin descriptions (PWM1L and PWM1H), (PWM2L and PWM2H) (PWM3L and PWM3H) [2] these are six different types PWM channels used in the pin configuration. In which each PWM pair generates three duty cycles with one high output (H) and one low output (L). INT0, INT1INT2 are the interrupt buffers used in the PIC. VSS and VDD [2] are the supply voltage and ground in the PIC controller. U1RX U1TX, U1ARX U1ATX [2] are the series of pins used for communicating PIC microcontroller with PC, in other system interface operation can be done by UART function. In that RX stands for receiver and TX stands for transmitter. The above pin function plays an important in our project. CHAPTER 3 METHODOLOGY 3.1 Components for controlling 24v brushed Dc motor Since the project is fully based on hard ware so many components are available and how they work in that operation. 3.1.1Cascade control operation in Dc Motor: The below operation is done by using Double cascaded layout, it consists of two loops they are current controller with current reference and speed controller with speed reference [5] as shown in . FIGURE4: General block diagram of speed loop and current loop of DC Motor [b] The current loop is covered by the speed loop, in the block diagram it has the two circles inner circle is called inner loop and the outer circle is called outer loop since the inner circle operation is always quicker than the outer circle. In other words inner circle performance is multiple of ten times quicker than the remaining one. The cascade control principle is mainly used in our project to maintain the speed of the motor at a constant level and the current loop in the cascade control is the armature current and it is otherwise called as torque. Sometimes armature current may exceed the limit to avoid this situation in cascade control, it has limiter, and the main function of the limiter is to limit the values of the armature current. For example To limit the armature current to 64volt i.e. 1 ampere. So that the armature wont exceed those limits since the limiter is available in cascade control. The speed controller in the cascade control used to produce demand current ia*. Th e motor runs to overcome the demand current values. The demand current value will always higher than the normal current values. So that the speed motor gradually increases. PI controller(proportional Integral controller) Current controller Speed controller The above all components construct a cascade controller and the function each component is described below 3.1.1.1PI controller (proportional and integral controller) In cascade controller function various controllers are used for detecting the speed and control of the motor, but PI controller is recommended as high efficient controller because it consist to constant gain Kip and Kid. By manually tuning the gain of both Kii and Kpi will reduce the steady state error and the stability of the system will be increased. In recent survey more than 70% cascade controller used PI controller for controlling the speed control DC Motor. In order to reduce the steady state error in the closed loop system, gradually increase the proportional gain constant Kp. As the gain of the Kp increases the steady state error in the system decreases. But the stability of the system will not be stable. To make the system stable, integral term Ki is introduced in the system. When both the proportional and integral term sum each other to reduce the steady state error and make the system stable .the above two functions can be done simultaneously in the PI controller. The math ematical expression for PI controller is explained below. FIGURE 5: PI controller of a closed loop function [1] Kp-proportional gain Ki-Intergral gain Y- Output of the PI controller Err-Error in the PI controller At the beginning error (Err) will pass through both Kp and Ki. For proportional gain the output is Kp Err y1= Kp Err eqn1 [1] y2 = eqn 2 [1] y = y1 + y2 eqn 3 [1] eqn 4 [1] The key point in this PI controller is the error Err in intergral gain Ki will be integrated. so that the steady error will be reduced and the system will be stable. 3.1.1.2Current controller The current controller in the closed loop functions of the cascade control. The current loop is also called as current controller. It is used to protect cascade circuit from damage. The main function of the cascade function is to control the speed. Before controlling the speed the current of the controller should be controlled. The current obtained from the closed loop function is from armature circuit of the DC Motor [7].the input in the current controller is the back emf (ia*). Power converter is mainly used to improve the control in the system. It has high switching frequency, since the power converter in the current loop is very quick. The output of the converter is armature voltage (Va). (-E) is the disturbance occurred in the current loop, in order avoid the disturbance -E ia ia* RL CIRCUITT Power Converter PI FIGURE 6: Functional block diagram of Current controller The disturbance is added along with RL circuit, and the equation is shown below Va = (S La + Ra) ia + E The function of the RL circuit is reduce complexity Va is Armature voltage. ia is armature current (trying to control) Ra is Armature resistance E is Disturbance RL = 1/(S La + Ra) Current loop is carried out by transmitting the from ia(armature current) to ia*(demand armature current). As quick as possible without making the over shoot getting so high. If the over shoot is high it creates problem to the converter. Similarly when the gain values (Kp and Ki) increases in PI controller the over shoot value reduces, but the same time there is more amount of oscillation which may affect the system. Care should be taken in choosing both Kp and Ki values. ts ia ia** FIGURE 7: graph for armature current vs settling time ia Armature current ia* Demand armature current ts Settling time 3.1.2 Flexible inverted board The major hardware has been designed and implemented as Flexible inverted board. It consists of many components they are dsPIC30F3010 microcontroller, H-bridge converter and dc motor. The functions of these hardware components are explained earlier. The above all operation is implemented in a single hard ware called flexible inverted board. FIGURE 8: Functional block diagram of Flexible inverted board 3.1.2.1 IR2130 gate drive circuit: There are three input signal generator blocks which are capable of providing two outputs each gives the inputs to the six output drivers. L1, L2 and L3 are signal generators which drive precisely the three low-side output drivers although H1, H2 and H3 signal generators must be level shifted before it is fed to the high-side output drivers. The floating points of the driver, gate charge requirements of the power switch and the maximum power switch ON times receives power from three bootstrap capacitors C1, C2 and C3. Bootstrap capacitors also feed supply to the internal floating driver current. Once these energy requirements are met there must be considerable amount of charge still on the 8.3V nominal to prevent stopping. D7, D8 and D9 should be super-fast. VCC level seen by an under-voltage detector circuit gives an input to outlaw six outputs of the signal generator circuits. Current sensor R1 derives the ITRIP signal in the main power circuit of the motor when it is segregated with a 0.5 volt reference to outlaw the six signal generator outputs. ITRIP inputs sets up a fault logic circuit which in turn gives open drain TTL output for system gesture. FIGURE 9: Circuit diagram for IR2130 gate drive circuit 3.1.2.2Trim port function with PWM Trim port are small in size and they are very small in size .it is mainly used in many PCB construction board since its occupies less space. The trim port act like a potentiometer and it is otherwise called as trimmer [ ]. By tuning the trim port, resistance value can be minimized or maximized. For example if a 50ohm resistance can be tuned by trim port from 0 50. The two leg of H-bridge converter produce two pulse wave form one with low output (1L) and another one with high output (1H). The duty ratio of the PWM wave form can adjust using trim port. 3.1.2.3DC MOTOR ENCLOSED WITH A ENCODER The best methods of calculating the speed of the DC motor is using optical encoder method. It consists of a disk, Light Emitting Diode (LED) and optical sensor [6]. The disk is fitted with the rotor, as the rotor rotates the disk starts spinning along with the rotor and it is placed in between the LED source and the light sensor. Once the rotation starts the disk passes through the LED source and the optical sensor gets started, from which the speed of the motor can be calculated because the optical sensor acts like a tachometer. In other words the encoder in the DC motor is otherwise called as speed detecting sensors. [6] 3.1.2.4 H-Bridge converter DC motor runs differential speed, but the applied voltage of the motor varies at every interval of time. Since the voltage is directly proportional speed, as the voltage increases the speed of the motor also increases. Speed can be calculated by tachometer which is in build in the DC motors, the applied voltage can be supplied and controlled by a converter called h-bridge converter. GD GD Gate Drive Circuit FIGURE 10: H-bridge converter with different voltage VÃŽÂ ± VÃŽÂ ²[c] In this H-bridge circuit it produces two unipolar pulse width modulations because it has two leg inverter. Effective modulation takes place only in the first half of the inverter. As a result two variable voltages are generated on either side of the armature winding. In H-bridge, modulation index is represented as (+mi) and the reciprocal of modulation index is represent as (-mi).the motor in our project actually experiencing two pulse width. Both the pulses are inversely proportional to each other producing a unipolar PWM. The two legs in the converter are called the switching signals or switching frequency. Bigger converter relatively has lower frequency and smaller converter has higher frequency. If the frequency in the leg1 is high in contrast the frequency in the leg2 will be low. In our project consider VÃŽÂ ± and VÃŽÂ ² are the switching channels of the H- bridge converter . they are inversely proportional to each other. The carrier signal is called the input frequency . the carrier frequency used in our project is 10khz. According to the carrier frequency the time period of VÃŽÂ ± and VÃŽÂ ² differs. In C coding VÃŽÂ ± and VÃŽÂ ² is mentioned as PDC1and PDC2 from the below graph FIGURE 11 graphical representation of PWM signals in H- Bridge converter. The output voltage of the h-bridge converter can be obtained both negative and positive voltage distribution [1]. Pulse width modulation in the h-bridge converter helps to control the armature circuit of the DC motor [1]. Maximum armature current (torque) can be obtained by comparing time constant of both field winding and the armature winding [1]. Since the motor is connected directly to the field windings supply voltage in the field winding is more when compared with the armature winding. To maintain equal time constant in both field and armature winding [1], the applied voltage in the armature winding should be increased, as the armature current increases the torque output is maximized [1]. 3.1.3 Generating PWM wave forms As the torque output gets maximized, pulse width modulation is introduced in the H-bridge system to avoid the disturbance in the armature current.it can be done by increasing the frequency level of the H-bridge converter at a higher range. As the torque output gets maximized, pulse width modulation is introduced in the H-bridge system to avoid the disturbance in the armature current.it can be done by increasing the frequency level of the H-bridge converter at a higher range. FIGURE 12: Diagrammatic representation of the pulse width modulation is shown below [6] The below specification is referred from [6] Ton Time is ON (applied voltage) Toff Time OFF (applied voltage) T Time period. Duty cycle =. The average voltage of the DC motor can be shown in an equation below Average = Duty cycle ÃÆ'- Vin [6] When the motor is running at a constant speed the back emf of the motor is also remain constant. As the back emf remain the same the motor running at constant speed and the armature current (Ia) is zero. PWM is one main part that is required for the operation of cascade control. 4. Software used to drive the Motors 4.1 Programming microcontroller in Flexible inverted board using C-language In the flexible inverter board PIC microcontroller plays a major position in directing the pulse width modulation. The Ton time in the pulse width modulation (PWM) signal can be modulated or controlled by the microcontroller, as the microcontroller varies the time, the velocity of the motor changes with respect to time. The Programing language used in microcontroller is embedded C. The programming codes are downloaded in the microcontroller chip, the downloading approach can be done by a software development tool called MPLAB, this software exists in monitoring the systems, this software should be first installed in the PC, the programmers will write the codes to modulate the PI controller to acquire Applicable source from the current loop of the cascade control function. Once the codes are accepted according to the current loop [1], the programs can be downloaded in the microcontroller through universal serial bus or in circuit Debugger (ICD); ICD is a bus which interfaces PC system and the flexible inverter Board. [6] In order to program the microcontroller examine whether the hardware components are interfaced with the controller. The programming language used for programming the controller is C language. In c-language the datas are classified in to input data and output data. The microcontroller send the information in analogue signal, where the C-language wont accept analogue signals .To avoid the situation ADC converter and encoder interface are introduced in the system. ADC stands for analogue to digital converter; it converts the analogue signal in to digital signals. Then the digital signals get received by the C-program as input data. In turns c-program will send the output data to the PWM unit. UART communication system is a bidirectional so that microcontroller and PC can communicate simultaneously. UART stands for universal asynchronous receiver transmitter. The basic diagrammatic representation for system communication with C-language is shown below FIGURE 13: System communication in C Programming Language. In C-language firstly initialise all the functions required for the speed control of motor. 4.1.1Current sensor input: The current in the motor coils is one important parameter in the effective running of the motor. So it is essential to measure the value of this current. The measurement of the current is performed by using special sensors call Hall Effect Sensors. The range of the current is determined by the rating of the motor. Any over current in the motor can badly damage the motor. The Hall Effect sensors produce a voltage corresponding to the phase current. This is fed to the ADC inputs of the micro controller where it is converted into the digital signals. This is then fed into the microcontroller program. Hence the current needs to be limited within specific limits.CL1, CL2 and CL3 are the three current sensors variables used in this coding. The bit ratio of the ADC input is 10 so the input data ranges from 0 to 1023. The maximum data limit for the current sensor is 1023.so the current sensor value in the C- code is initiated as CL1 = 511; CL2 = 511; CL3 = 0; 4.1.2 Encoder input: For any speed controller, the actual speed of the rotor forms the basis for the control signals. The speed control signal can be changed only if there is an error between the actual speed of the rotor and the desired speed of the rotor. If the measured speed is less than the desired speed then the PWM pulses are varying accordingly to increase the speed. To perform this action a shaft encoder is used. The shaft encoder uses an opto-mechanical system to generate pulses. These pulses then are used to derive the speed of the rotor. A reference pulse is used as an indicator to count the pulse. This information is fed to the microcontroller, which then uses a special timing circuit that processes these encoder pulses. The motor speed to be accessed by the microcontroller needs to be stored in a variable within the micro controller code. The variable used in this program is a variable called rpm. This variable is accessed to calculate all functions related to the motor speed. 4.1.3 Pulse Width Modulation: The MOSFETs in the circuit is used as switches. These MOSFETs are switched according to a PWM. To drive these MOSFETs a gate driver circuit is required. The gate drive signal generates the voltage required for the operation of these MOSFETs. The PWM is generated by the microcontroller according to the program and is supplied to the gate drive circuit. The PWM signals are separate for each if the 3 legs of the MOSFET inverter. Each of the PWM requires a modulation index to generate the signal. These modulation indexes are stored in a register. The registers are named as PDC1, PDC2, and PDC3. These variables are very crucial in generating the PWM signals for the MOSFET drivers. Since data limit is 1023. 4.1.4 Initializing the code in C language Before performing any function in C-language, it requires an initialisation. It is important to initializing the variable of a function. Some the functions are initialized below. Init PORT () This function initialize the digital input and output port or analogue input and analogue output of the microcontroller. Init UART () It is one of pin in the microcontroller .The main function of the UART is used for bidirectional communication with PC. Since UART can able to detect the transmission speed in data transfer between the microcontroller and PC. The maximum transmission speed is around 19200.the data transfer wont exceed the limit. Init PWM ( ) The input frequency of our PWM signal is 10kHz.the time limit for the modulation index is around 0-1474.in the h-bridge converter has two legs so each leg produces a PWM signal with a maximum time limit of 0-737. Hence the Ton time of PWM signal will be in 1:1 duty ratio. Init ADC ( ) It is used to convert the analogue signals in to digital signals. In the microcontroller there are five pins reserved for the ADC inputs. During the data transmission ADC functions plays a important role in interrupting the signal. An initialisation is required for the interrupt to perform any function in C- language. Init CAPTURE ( ) The capture function is mainly used to measure the frequency and time period of the PWM wave form generated from the two legs J30 and J31 pins of the H-bridge converter InitTimer3 ( ) and InitTimer1 ( ) To set initial time in the microcontroller for the capture function and timer 1 set the starting time for the interrupt function happened in the UART communication system. Interrupts: Interrupts are occurred only during the data transfer, when the transmission speed that is the baud rate is known means the interrupts can be added to the system easily.in our project the baud rate is 19200.the main function of the interrupt is used synchronize time period of PWM with the speed loop and the current loop of the motor. In our project four different type of interrupt service routine are used. They are ISR_ADCInterput ( ) This interrupt is triggered when the ADC finishes its conversion and hence its get synchronized to the microcontroller PWM time base. From this all the application control code to be implemented in this interrupts service routine. ISR_T1Interput ( ) The various information to the PC is transferred by using the UART communication link in this interrupts service routine. All the variables that are needed to be mentioned in this routine using standard C function sprint ( ). ISR_U1RXInterput( ) Various information is transferred from the PC in to the C program. This routine concedes us to regulate the aspects of the program when it is running. ISR_IC1Interput( ) It measures the speed value from timing data that are attained in the input capture module. FIGURE 14 The connection diagram for the speed control of Dc motor is shown above CHAPTER 5 5 Results and discussion As discussed earlier the various functions of hardware components in this project, this section discusses the details regarding how the project deals with comparing and evaluating the results. Project has a series of steps; each step is assigned with different operation techniques to execute the final results. 5.1 Initial connection test between MPLAB IDE and Flexible inverted Board Initially the system needs to be interfaced using the flexible inverter board. This operation is performed by conne

The Great Depression :: essays research papers

Introduction It should be noted that all of the cures have been tried and while we seem to be free of Depressions, it's not clear that business cycles have been eliminated. Causes The Stock Market Crash The Stock Market Crash in October of 1929 is often cited as the beginning of the Great Depression, but did it actually cause it? The answer is no. First, the stock price for a particular company merely reflects current information about the future income stream of that company. Thus, it is a change in available information that changes the stock price. When the Fed began to raise interest rates in early 1929, this began the tumble. However, a stock market crash could cause people to increase their liquidity preference which might lead them to hoard money. In the August 1990 issue of The Quarterly Journal of Economics, Christine D. Romer writes that "the negative effect of stock market variability is more than strong enough to account for the entire decline in real consumer spending on durables that occurred in late 1929 and 1930." Hoarding Money People hoard money because they have a liquidity preference. I.e., people want to have their assets in a readily convertible form, such as money. There are several misconceptions about hoarding money. First hoarding is not the same thing as saving. If I put my money into a savings account, that money is lent out to someone else who then spends it. Second, hoarding, by itself, cannot cause a recession or depression. As long as prices and wages drop instantly to reflect the lower amount of money in the economy, then hoarding causes no problems. Indeed, hoarding can even be seen as beneficial to those who don't hoard, since their money will be able to buy more goods as a result of the lower prices. If a country has a gold standard, then hoarding money can make the money supply drop dramatically since a gold standard makes the quantity of money difficult for the government to control. The Gold Standard At the time of the Great Depression,America had a 100% gold standard for its money. This meant that all cash was backed by a government promise to redeem it in a specific amount of gold (at the time, one ounce of gold was redeemable for twenty dollars). Because the amount of money circulating in the economy is wholly dependent on the amount of gold available, the money supply is very rigid.

freeclo Freedom in Anthony Burgess A Clockwork Orange :: Clockwork Orange Essays

Freedom in A Clockwork Orange A Clockwork Orange by Anthony Burgess tells a story about a young man and his choices of freedom. The book asks the question "is it better to have someone constantly do the right thing, or to have the freedom of choice to do the right or wrong thing". The author shows the affect of society on a human who has been institutionalized and let back into society. The author of the book goes on to show how the protagonist copes with society under his given conditions. "Georgie let go of holding his goobers apart and just let him have one in the toothless rot with his ringy fist, and that made the old veck start moaning a lot then, then out comes the blood, my brothers, real beautiful." (Page 7) This had been an occurrence that took place when the protagonist was walking down the street with no apparent intention of harming anyone. This occurrence shows the time in Alex's life where he is able to make decisions on his own, weather he chooses for those actions to be morally appropriate or not is up to his discretion. "He has no real choice, has he? Self-interest, fear of physical pain, drove him to that grotesque act of self-abasement. He ceases also to be a creature capable of moral choice." (Page 126) This is the occurrence of Alex's life after he has been arrested for his wrong doings and has been brought to the institute. This is where the reform of Alex has occurred. He had been tortured beyond his belief. Now each time that Alex has a thought of an immoral deed he gets sick to his stomach. Alex now has no choice of doing what he wishes to do; he has no real choice. This is what the doctors and observers believe was the reform of Alex. "I could viddy myself carving the whole litso of the creeching world with my cut-throat britva. And there was the slow movement and the lovely last singing movement still to come. I was cured all right." (Page 179) The government does try to make Alex an unconditionally good person through institutionalization: however, since it is a forced goodness, conflicting his own will, a complete goodness is not attained. This shows that the reform of Alex is now over and has no significance over him.

Columbian Exchange Frq Essay

The Aztecs and Incas were extremely affluent with precious metals, and the Spanish were able to bring much of those riches back to Europe , boosting the economy by adding more wealth . Even the furs of the North American animals were extremely valuable back in Europe for fashion purposes, so the trading of furs became highly profitable . The economic system of mercantilism aided this influx of wealth; the newly prosperous nations gained maximum capital from their trading by establishing colonies. In mercantilism, the European nations exported much more than they imported to increase the wealth of the nation. The newfound wealth of the Americas affected the upper and middle classes, who benefited from the profits. Governments used the money to sponsor research in industry and to build up their militaries . The flourishing economy led to improved technology and militaries, thus causing a significant change in European society. Another major product of the Columbian Exchange was the introduction of new crops and animals from the Americas. The most important crop brought to Europe was the potato. The potato was a staple, since it provided key essential nutrients. Thus, it provided a reliable source of nutrients to sustain peasants during grain shortages, allowing for a population increase. The potato’s versatility led to its expansion, and it became a major food source for Ireland, Scotland, and Germany. It was more efficient to grow than the European wheat, yielding more crops per acre, meaning the potato would feed more people than wheat given a limited amount of land. The efficiency also contributed to a population increase. The potato became part of European food so much so that it eventually became known as the food of the poor. Other crops besides the potato also were integrated into the European diet, including maize, tomatoes, peppers, and chocolate, to a lesser extent. The North American turkeys also became part of the European diet . In addition, Columbian Exchange created the slave trade which heavily influenced Europe. In the New World, certain crops such as cotton, sugarcane, and tobacco were cultivated. However, these crops require a great deal of labor and attention in order to grow in mass quantity , since the harvesting a large amount of those crops required manual labor . The first Spanish conquistadors enslaved the native population or used an encomienda to meet those labor needs. However, the Spanish also sent missionaries to the New World to convert the natives to Catholicism, thus many of the natives converted; and since it was not acceptable to enslave a Catholic, the European nations looked to Africa to provide the need for labor. Slaves were sent from Africa to the New World and Europe. Eventually, many wealthy households in Europe had at least one slave. Owning a slave became a sign of money and power .