Thursday, April 30, 2020
Poverty Is Not Caused by Overpopulation Essay Example
Poverty Is Not Caused by Overpopulation Paper First presented some facts about world population and demography. Then I analyzed the Malthusian and Marxist views on population. I talked about the existing views that considered population growth as the main reason behind poverty. Then I discussed my arguments about those view and discussed how population growth is not the primary cause of low standard of living, gross inequalities or limited freedom choice that characterize much of the developing world. I tried to find the main reasons behind the impoverishment of the poor countries and how those lead to overpopulation. Background: Human race came into existence around 2 billion years ago. Agricultural Revolution took place about 10,000 years ago when people used to hunt and gather food. At that time the estimated world population was about 4 million. The population started to grow significantly after the agricultural revolution. However, the most dramatic population growth occurred after the Industrial Revolution in sass. The world population was approaching one billion people and was increasing by more than two million every year. This dramatic population growth is termed population explosion because within less than 00 years the number of people mushroomed to more than 6 billion whereas before this, world population grew very slowly for millions of years. At this very moment, nearly 7 billion people are sharing this planet. By 2050, the population is expected to reach 9 billion. The world population is very unevenly distributed by geographic region, fertility and mortality levels and age structure. Here we also have to consider the term demographic transition: transition from high birth and death rates to low birth and death rates. We will write a custom essay sample on Poverty Is Not Caused by Overpopulation specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Poverty Is Not Caused by Overpopulation specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Poverty Is Not Caused by Overpopulation specifically for you FOR ONLY $16.38 $13.9/page Hire Writer Most of the developing countries are in stage two and the developed countries in stage three. So in the developing countries, though death rate has dropped significantly due to improvement in medicine and health care, fertility rate remains high. So population growth is highest in the developing and poor countries. Existing literature: Now the question is why birth rates are so high in the developing countries? In 1 798, Thomas Malthusian proposed a theory that determines the relationship between population growth and economic development. According to him, the poor countries are poor because of the population growth. Eliminate the population problem and the problem of poverty will be solved by itself. To eliminate the extra people, positive and preventive checks are necessary. Positive checks are famine, natural disasters, war etc which according to him is a good way to get rid of the unnecessary people who are burden to the society. Preventive checks would be only moral restrain because birth controls were considered as sins according to the Catholic Church. Malthusian was not aware of the technological progress that would occur and thus he came up with the theory that food production will not be able to keep up with the population growth. Thus the solution was to get rid of the poor people. Karl Marx saw the Malthusian point of view as an outrage against humanity. Marx pinpointed the fact that with technological progress, there would be more production. So capital would be increasing too. However, the few capitalist who own all the resources exploit the poor workers and keep them poor. So poverty is the result of a poorly organized capitalist society where there is no equal distribution of wealth. From the Marxist point of view, overpopulation is not the reason behind slow economic growth and development. Though the theory of Malthusian is much criticized and controversial, his ideas are still remaining in the present world. Many theorists and economists see the reduction of population growth through severe measures as the easiest way of ensuring economic prosperity in a developing country. According to them, unrestrained population increase is the main reason behind low standard of living, malnutrition, ill health, environmental degradation, and many other economic and social problems. There is a theory known as population-poverty cycle. This theory states that overpopulation makes the economic, social, and psychological problems more complicated. As more children are born every day, there is less savings rate per person in the household and national level. Because of the uncontrolled population growth, the government fails to provide the basic necessities for the additional people. This leads to low living standard of the existing generation and eventually poverty is transferred to the next generation. At present China is the most populous country in the world with a number Of 1. 34 billion. This country has undertaken one Of the most harsh and coercive population control policies in the early sass- one child per family policy. Though this policy dramatically reduced the growth rate, is caused many socio-economic problems and controversies. However, the cline in the fertility rate in China through one child policy is less successful than approaches based on women empowerment and education in some parts of India, such as the state of Kraal. This shows us that population no longer remains a problem even though there is slow economic growth by focusing on empowering people, especially women. Defending my thesis: My thesis is that poverty causes overpopulation and to solve both the problems, other issues are needed to be taken care of. One of the main causes that keep poor countries and poor people poor is unequal distribution of wealth and natural resources. The developed countries consist of one quarter of the worlds population but consume almost 80% of the world resources. In 2005, the wealthiest 20% of the world accounted for 76. % of total private consumption. The poorest 20% consumed just 1. 5%. When one child is born in a developed country, the amount of money and resources spend behind it is equivalent to 16 children in the developing countries. Therefore the developed countries should cut back their very high consumption instead of asking developing countries to control their population growth. However they do not do that in an attempt to hold down he development of the poor countries to continue dominance over them and to maintain the very expensive living style. So they made population growth the main reason behind poverty to distract everyone from the real reasons. They pressurize the poor nations to adopt aggressive population control programs even though they themselves went through a period of sizable population increase that accelerated their own development processes. So as the Lads are kept poor, no or less development occurs and thus generates overpopulation. Also a huge amount of resources are hold idle. For example, only 12% of all the potential arable land is under cultivation. So the land actually being cultivated amounts only a fraction of its potential. According to one web resource- Enough arable land exists in India to give each person in the country approximately half an acre. In famine-ravaged Ethiopia, each person could have three-quarters of an acre of arable land. Africa, the poorest continent, has 20. 2% of the worlds land area, and only 13% of its population. North America has a whopping 2. 1 acres of arable land per person! So many areas with potential resources are under populated and any small areas (urban areas in the Lads) are concentrated with too many people. This unequal distribution of people in terms of land causes poverty rather than the population growth. Underdevelopment itself is a huge problem. If the governments of the developing countries adopt correct strategies that promote higher levels Of living, greater self-esteem and expanded freedom, population will take care of itself. If people are healthy and better educated, they will themselves be aware of the fact that smaller families are better than larger families. On the other case, if they are uneducated and physically and psychologically weak, the large family will be the only real source of social security. So the birth control programs and severe child control policies will be unsuccessful if there is no motivation to empower and enlighten the people, especially the women. If the women have equal roles and status like the men and have access to birth control, fertility rate will fall by itself. However, the richest people of the developing countries consume most of the resources and deprive the rest of the people of their daily necessities. As the poor people are kept poor they fail to get educated ND empowered which leads to low quality of life and overpopulation. Conclusion: Overpopulation is not the main cause behind poverty. It is the other way around. However, fast population growth is not desirable too. So in order to develop, countries like Bangladesh need to adopt policies that focus on making people aware of the ways to keep the family small. The consequences of rapid population should neither be exaggerated nor minimized. However, it is pretty clear problem of population is not simply a problem Of huge number. It is about quality of life and material well being.
Saturday, March 21, 2020
The 5 Types of Interview Outfits That Will Get You Hired
The 5 Types of Interview Outfits That Will Get You Hired No matter what stage you are in your career, you need to dress to impress whenever youââ¬â¢re granted an interview. That might mean something different depending on your career status and the field youââ¬â¢re interviewing in, but the overarching point you should keep in mind when you select your attire is this: look like you care. Look like you put some thought into how you present yourself, because after all, if you donââ¬â¢t care enough to look nice and together when youââ¬â¢re on your best behavior, then why should a company think you will care enough to do your best on any random Tuesday after a few months into the job? Here are some tips for how to make sure youââ¬â¢re making the right first impression on the hiring manager. Show them through what youââ¬â¢re wearing how perfect you would be for the job, no matter what that job is.1. Super-CasualIn the past, the basic rule was that if you had a job interview, you better either buy a suit or make sure yours was d ry-cleaned and ready to go. But times have changed, and itââ¬â¢s really okay to match your attire to the personality of the company.For example, you donââ¬â¢t want to show up to a casual workplace in a suit and tie- youââ¬â¢ll look like you donââ¬â¢t really understand the culture, and they wonââ¬â¢t be able to picture you adequately within their company. Try instead to focus on making sure you look clean and professional, despite the more laid-back style. Dark, clean, and crisp denim always works, with tasteful (again, clean) sneakers or sandals or flats, and a tidy, well-fitting top. Donââ¬â¢t bust out a concert t-shirt or anything, but a wrinkle-free polo works.2. Sort-of-CasualYouââ¬â¢re still not going to need a suit and tie, but you might have to trade your nice top in for one with buttons. Avoid jeans and go with a casual dress (one with sleeves, please), a skirt, corduroys, or other slacks instead. Keep your shoes relaxed, but elegant- nothing you would w ear to the gym, say. Maybe add a bit of a heel.3. Executive CasualYou still donââ¬â¢t absolutely need a tie in this situation (but certainly no one would think it out of place), but a jacket or blazer is often called for. Definitely no jeans. Keep the skirts or slacks on the dressier side, and go with the more elegant shoes- pumps for the ladies; something leather for the men. Add a pop of color or pattern in your shirt that will jazz up the monotony of your suit separates.4. Serious BusinessOkay. Here come the suits. Gents, here come the ties. You can wear your more colorful suits, darker ones, or subtle patterns- bright colors are fine here. Just because you need to look professional doesnââ¬â¢t mean you canââ¬â¢t have a personality. Keep the tops crisp and well-tailored, the heels closed-toe, and legs covered with hosiery or tights.5. Boardroom Big ShotIn the highest stakes situations, itââ¬â¢s best to go for the gold. Grey or navy suits for the men, with ties and wh ite dress shirts. The highest quality accessories are needed here- as neat and unobtrusive as possible. Ladies, keep your skirt lengths two-fingers above the knee or longer and stick with black tights and shoes.Remember to make sure youââ¬â¢re comfortable. And donââ¬â¢t make it look like youââ¬â¢re dressing up from Mommy and Daddyââ¬â¢s closet. Keep it simple, not too flashy, and youââ¬â¢ll do just fine. And, as always, dress for the job you want, not the one you have.
Wednesday, March 4, 2020
Practice Your Inferencing Skills With This Worksheet
Practice Your Inferencing Skills With This Worksheet How are your inferencing skills? Need some inference practice? Of course, you do! The reading comprehension portions of many standardized exams will ask inference questions ââ¬â those that ask you to infer, or make an educated guess, about the content of the passage ââ¬â along with the standard questions about main idea, authors purpose, and vocabulary in context. Teachers, feel free to print the following PDFs for easy practice in the classroom:Inference Practice 3à Worksheet | Inference Practice 3à Answer Key On Being Found Guilty of Treason Robert Emmet Born in 1778, died in 1803; became a leader of the United Irishmen, and in 1803 led an unsuccessful rising in Dublin; escaping to the mountains he returned to Dublin to take leave of his fiancà ©e, Sarah Curran, daughter of an orator, and was captured and hanged. MY LORDS:What have I to say why sentence of death should not be pronounced on me according to law? I have nothing to say that can alter your predetermination, nor that it will become me to say with any view to the mitigation of that sentence which you are here to pronounce, and I must abide by. But I have that to say which interests me more than life, and which you have labored (as was necessarily), your office in the present circumstances of this oppressed country) to destroy. I have much to say why my reputation should be rescued from the load of false accusation and calumny which has been heaped upon it. I do not imagine that, seated where you are, your minds can be so free from impurity as to receive the least impression from what I am going to utterI have no hopes that I can anchor my character in the breast of a court constituted and trammeled as this isI only wish, and it is the utmost I expect, that your lordships may suffer it to float down your memories untainted by the fou l breath of prejudice, until it finds some more hospitable harbor to shelter it from the storm by which it is at present buffeted. 1 Was I only to suffer death after being adjudged guilty by your tribunal, I should bow in silence, and meet the fate that awaits me without a murmur; but the sentence of law which delivers my body to the executioner, will, through the ministry of that law, labor in its own vindication to consign my character to obloquyfor there must be guilt somewhere: whether in the sentence of the court or in the catastrophe, posterity must determine. A man in my situation, my lords, has not only to encounter the difficulties of fortune, and the force of power over minds which it has corrupted or subjugated, but the difficulties of established prejudice: the dies, but his memory lives. That mine may not perish, that it may live in the respect of my countrymen, I seize upon this opportunity to vindicate myself from some of the charges alleged against me. When my spirit shall be wafted to a more friendly port; when my shade shall have joined the bands of those martyred heroes who have shed their bloo d on the scaffold and in the field, in defense of their country and of virtue, this is my hope: I wish that my memory and name may animate those who survive me, while I look down with complacency on the destruction of that perfidious government which upholds its domination by blasphemy of the Most Highwhich displays its power over man as over the beasts of the forestwhich sets man upon his brother, and lifts his hand in the name of God against the throat of his fellow who believes or doubts a little more or a little less than the government standarda government which is steeled to barbarity by the cries of the orphans and the tears of the widows which it has made. 2 I appeal to the immaculate GodI swear by the throne of Heaven, before which I must shortly appearby the blood of the murdered patriots who have gone before methat my conduct has been through all this peril and all my purposes, governed only by the convictions which I have uttered, and by no other view, than that. of their cure, and the emancipation of my country from the super inhuman oppression under which she has so long and too patiently travailed; and that I confidently and assuredly hope that, wild and chimerical as it may appear, there is still union and strength in Ireland to accomplish this noble enterprise. Of this I speak with the confidence of intimate knowledge, and with the consolation that appertains to that confidence. Think not, my lords, I say this for the petty gratification of giving you a transitory uneasiness; a man who never yet raised his voice to assert a lie, will not hazard his character with posterity by asserting a falsehood on a subject so important to h is country, and on an occasion like this. Yes, my lords, a man who does not wish to have his epitaph written until his country is liberated, will not leave a weapon in the power of envy; nor a pretense to impeach the probity which he means to preserve even in the grave to which tyranny consigns him. 3 Again I say, that what I have spoken, was not intended for your lordship, whose situation I commiserate rather than envymy expressions were for my countrymen; if there is a true Irishman present, let my last words cheer him in the hour of his affliction. 4 I have always understood it to be the duty of a judge when a prisoner has been convicted, to pronounce the sentence of the law; I have also understood that judges sometimes think it their duty to hear with patience, and to speak with humanity; to exhort the victim of the laws, and to offer with tender benignity his opinions of the motives by which he was actuated in the crime, of which he had been adjudged guilty: that a judge has thought it his duty so to have done, I have no doubtbut where is the boasted freedom of your institutions, where is the vaunted impartiality, clemency, and mildness of your courts of justice, if an unfortunate prisoner, whom your policy, and not pure justice, is about to deliver into the hands of the executioner, is not suffered to explain his motives sincerely and truly, and to vindicate the principles by which he was actuated? 5 My lords, it may be a part of the system of angry justice, to bow a mans mind by humiliation to the purposed ignominy of the scaffold; but worse to me than the purposed shame, or the scaffolds terrors, would be the shame of such unfounded imputations as have been laid against me in this court: you, my lord [Lord Norbury], are a judge, I am the supposed culprit; I am a man, you are a man also; by a revolution of power, we might change places, tho we never could change characters; if I stand at the bar of this court, and dare not vindicate my character, what a farce is your justice? If I stand at this bar and dare not vindicate my character, how dare you calumniate it? Does the sentence of death which your unhallowed policy inflicts on my body, also condemn my tongue to silence and my reputation to reproach? Your executioner may abridge the period of my existence, but while I exist I shall not forbear to vindicate my character and motives from your aspersions; and as a man to whom fam e is dearer than life, I will make the last use of that life in doing justice to that reputation which is to live after me, and which is the only legacy I can leave to those I honor and love, and for whom I am proud to perish. As men, my lord, we must appear at the great day at one common tribunal, and it will then remain for the searcher of all hearts to show a collective universe who was engaged in the most virtuous actions, or actuated by the purest motivesmy countrys oppressors or I? 6 I am charged with being an emissary of France! An emissary of France! And for what end? It is alleged that I wished to sell the independence of my country! And for what end? Was this the object of my ambition? And is this the mode by which a tribunal of justice reconciles contradictions? No, I am no emissary; and my ambition was to hold a place among the deliverers of my countrynot in power, nor in profit, but in the glory of the achievement! Sell my countrys independence to France! And for what? Was it for a change of masters? No! But for ambition! O my country, was it personal ambition that could influence me? Had it been the soul of my actions, could I not by my education and fortune, by the rank and consideration of my family, have placed myself among the proudest of my oppressors? My country was my idol; to it I sacrificed every selfish, every endearing sentiment; and for it, I now offer up my life. O God! No, my lord; I acted as an Irishman, determined on delivering my country from the yoke of a foreign and unrelenting tyranny, and from the more galling yoke of a domestic faction, which is its joint partner and perpetrator in the parricide, for the ignominy of existing with an exterior of splendor and of conscious depravity. It was the wish of my heart to extricate my country from this doubly riveted despotism. 7 I wished to place her independence beyond the reach of any power on earth; I wished to exalt you to that proud station in the world. 9 I wished to procure for my country the guarantee which Washington procured for America. To procure an aid, which, by its example, would be as important as its valor, disciplined, gallant, pregnant with science and experience; which would perceive the good, and polish the rough points of our character. They would come to us as strangers, and leave us as friends, after sharing in our perils and elevating our destiny. These were my objectsnot to receive new taskmasters, but to expel old tyrants; these were my views, and these only became Irishmen. It was for these ends I sought aid from France; because France, even as an enemy, could not be more implacable than the enemy already in the bosom of my country. 10 Let no man dare, when I am dead, to charge me with dishonor; let no man attaint my memory by believing that I could have engaged in any cause but that of my countrys liberty and independence; or that I could have become the pliant minion of power in the oppression or the miseries of my countrymen. The proclamation of the provisional government speaks for our views; no inference can be tortured from it to countenance barbarity or debasement at home, or subjection, humiliation, or treachery from abroad; I would not have submitted to a foreign oppressor for the same reason that I would resist the foreign and domestic oppressor; in the dignity of freedom I would have fought upon the threshold of my country, and its enemy should enter only by passing over my lifeless corpse. Am I, who lived but for my country, and who have subjected myself to the dangers of the jealous and watchful oppressor, and the bondage of the grave, only to give my countrymen their rights, and my country her indepe ndence, and am I to be loaded with calumny, and not suffered to resent or repel itno, God forbid! 11 If the spirits of the illustrious dead participate in the concerns and cares of those who are dear to them in this transitory lifeoh, ever dear and venerated shade of my departed father, look down with scrutiny upon the conduct of your suffering son; and see if I have even for a moment deviated from those principles of morality and patriotism which it was your care to instill into my youthful mind, and for which I am now to offer up my life! 12 My lords, you are impatient for the sacrificethe blood which you seek is not congealed by the artificial terrors which surround your victim; it circulates warmly and unruffled, through the channels which God created for noble purposes, but which you are bent to destroy, for purposes so grievous, that they cry to heaven. Be yet patient! I have but a few words more to say. I am going to my cold and silent grave: my lamp of life is nearly extinguished: my race is run: the grave opens to receive me, and I sink into its bosom! I have but one request to ask at my departure from this worldit is the charity of its silence! Let no man write my epitaph: for as no man who knows my motives dare now vindicate them, let not prejudice or ignorance asperse them. Let them and me repose in obscurity and peace, and my tomb remain uninscribed, until other times, and other men, can do justice to my character; when my country takes her place among the nations of the earth, then, and not till then, let my epitaph be written. I have done. 1. Which of the following statements about Robert Emmet is best supported by the passage? A. He was a patriot, willing to die for his cause. B. He was a traitor, dishonoring his country. C. He was a liar, vilifying noblemen. D. He was a hero, ambitious for glory. Answer and Explanation 2. Based on the information in paragraph two, one could infer that the government in Robert Emmets time was: A. weakening. B. disorganized. C. oppressive. D. permissive. Answer and Explanation 3. It can be reasonably inferred from Robert Emmets speech that he is most concerned about this after his death: A. not finishing the task of finding freedom for Ireland. B. leaving behind a young wife and small child to fend for themselves. C. being characterized as a villain by people who didnt understand his motives. D. a poorly written epitaph about the role he played in the downfall of the United Irishmen. Answer and Explanation 4. It can be reasonably inferred from the passage that the Robert Emmet believed a partnership with France could: A. help gain control of the government to benefit Emmet. B. overthrow Irelands tyrannical rulers to free Ireland. à C. undo all the work he had done to free Ireland. D. sentence him to death for treason. Answer and Explanation 5. Based on the information in the passage, Robert Emmets tone could best be characterized as: A. quarrelsome. B. offensive. C. angry. D. passionate. Answer and Explanation
Monday, February 17, 2020
Discussion Board Essay Example | Topics and Well Written Essays - 250 words - 2
Discussion Board - Essay Example A manufacturing supervisor must attempt to address the requirements of the organization with the workerââ¬â¢s needs. In addition, manufacturing supervisors are faced with environmental challenges (Gomez-Mejia, Balkin & Cardy, 2008). Also, the manufacturing supervisors are faced with the challenge of ensuring the organization meets its targets and goals. There are a number of ways a manufacturing supervisor can deal with the different challenges arising in the organization. These problems can reduce when the organization employ a supervisor who posses technical, administrative, human relations, and conceptual skills. The manufacturing supervisor should comprehend the technical features of the work being carried out. It is essential for the manufacturing supervisor to understand the needs of employees when trying to manage job performance. In addition, a manufacturing supervisor who posses people skills will accomplish the objective of the people through and with the workers. Also, it is essential for the manufacturing supervisor to gain an understanding of the organizationââ¬â¢s dynamics and be familiar with politics in the organization (Kotter & Cohen, 2002). Adopting these perspectives will help decrease these
Monday, February 3, 2020
707 week 9 Assignment Example | Topics and Well Written Essays - 250 words
707 week 9 - Assignment Example Demographic factors such as age, gender, level of education, and area of residence are other possible variables for the study. Mean, range, and standard deviation will be calculated for both self-efficacy score, age and educational sessions because the variables are measured on a ratio scale that allows for calculation of the descriptive statistics (Heavey, 2011). Frequency and percentage will be used gender, level of education, and area of residence because of the variables are measured on ordinal scale of the variables. Lack of equal interval on magnitude and absolute zero property does not allow to use mean, range, and stanadard deviation in describing he variables (Heavey, 2011). The task force could use a t-test to investigate the relationship between self-efficacy score and number of educational session. The statistic would test a hypothesis for significance of a relationship between the two variables (Heavey,
Sunday, January 26, 2020
Case Study On Improvement Of Low Voltage Power Engineering Essay
Case Study On Improvement Of Low Voltage Power Engineering Essay This case study provides investigations on low voltage power distribution system in terms of electrical system design at INTEC Section 17 Shah Alam. It was conducted to ensure that the system applied is viable where it could lead to reliable and economical distribution of power. Therefore, this project was focused on 415V feeder pillar where suggestion can be offered to improve the respected system design. Distribution system is a system built to provide a means of economically and reliably distributing power from one, or occasionally more than one main location to a number of geographically dispersed load centres within a defined site boundary [1]. Low voltage power distribution system is the portion between primary feeder and utilization equipment. Therefore, the purpose of low voltage distribution is to distribute power to end user where at the same time providing safe conditions. Internatioanl Education College (INTEC) Section 17, Shah Alam is the place where this case study was carried. The low voltage distribution system applied at INTEC is conventional simple radial distribution system where the operation and expansion of the system are simple. However, problems occur as the power transformer (2000kVA 11kV/433V) is overheated and the cables insulation of secondary windings is melted due to overload. The system itself is quite old where feeder pillar used to allocate the power to specify load is quite congested where it need some upgrade. Therefore, to tackle those problems regarding on low voltage distribution system, suggestions can be offered to improve the system that meets the specifications of electrical standard and at the same time satisfy the end users. Hopefully it can be additional information for the INTEC Facility Unit to overcome the problems and upgrade the respected feeder pillar to provide safe, economical and reliable power to the end users. OBJECTIVES The objectives of this case study are: To obtain a relative information regarding on the low voltage power distribution system of INTEC. To observe the congested feeder pillar design and implementation at INTEC. To identify problems related to the congested feeder pillar. To propose for the improvement of congested feeder pillar. METHODOLOGY The case study of low voltage power distribution at INTEC was carried out based on the primer source of information such as books, journals, articles and related electrical specifications by The Institute of Electrical and Electronic Engineer (IEE), Tenaga Nasional Berhad (TNB), Suruhanjaya Tenaga (ST) and Jabatan Kerja Raya (JKR). With cooperation of local Facility Unit of INTEC, observations of respected substation and feeder pillar have been done. Some photo and reading has been taken to visualize the respected problems regarding on the overheated transformer and congested feeder pillar. Therefore, from those data, suggestions can be offered to overcome the problems and at the same time to improve the congested feeder pillar. Finally, for future study, opinions can raised for the further improvement of low voltage power distribution system. LOW VOLTAGE POWER DISTRIBUTION SYSTEM Distribution Feeder Feeder is the distribution lines that carry power throughout the distribution system. Radial distribution feeders are characterized by having only single path for power to flow from the source (substation) to the consumer load. The distribution network is composed of the substations and the feeders that they supply. Feeders are composed of sections each serving a purpose. The mainline is the backbone of the feeder and is typically a three-phase line generally designed for 400A nominal and 600A contingency loading. From this mainline, three-phase or single-phase laterals extend. Laterals are branches that are connected to the main line to serve loads, which can have laterals of their own. To protect mainlines from faults in the laterals, these are typically fused or switched by remote reclosers. Figure 1. Electricity Supply Specification in Malaysia The most common configuration for feeders is a four-wire wye configuration; one conductor for each of the three phases plus a solid multi-grounded neutral conductor. Nevertheless, less common configurations are three wire wye and delta configurations. Four-wire wye configurations are extensively used for their safety and easy fault protection [4]-[7]. This circuit type permits the use of under-rated voltage equipment by using phase-to-ground voltages, and fuse protection for ground faults. Feeder Pillar Feeder Pillar is the electrical compartment that consists of equipment that distributes power to the respected loads. It controls the switching of load where at the same time provides protection to the distribution line. Conventional feeder pillar consists of busbar, circuit breaker, earthing protection and metering equipment. The loads can be calculated by (1) for single phase and (2) for three phase system where it is proportional to voltage (V), current (I) and angle between voltage and current (à ¸): P=VI cos à ¸. (1) P=âËÅ¡3 VI cos à ¸. (2) By applying diversity factor, the load consumption should be less than the calculated value from (1) or (2) where the same load will not be used all the time. Diversity is the engineering principle that in any given installation, some of the connected loads will not be running at the same time instant as other loads [8]. Therefore the maximum demand of loads can be obtained to ensure that the cable and protection used is viable throughout the system. The voltage drop of cable is affected by cable length (L), tabulated voltage drop (mV/A/m) and the design current (Ib) as shown in (3). v.d. (V) = [(mV/A/m) L Ib]/1000. (3) Protection Moulded Case Circuit Breaker (MCCB) is used to interrupt the current path during fault occurrence. It is applicable for TPN (Three Phase and Neutral) cables while Miniature Circuit Breaker (MCB) has lower rating compared to MCCB and it is only applied for SPN (Single Phase and Neutral) line. Earthing of the feeder pillar will provide protection from leakage current to ensure the safety to human from the danger of electric shocks during testing or maintenance. LOW VOLTAGE POWER DISTRIBUTION SYSTEM IN INTEC INTEC HT Distribution System The incoming supply for INTEC from TNB is 11kV. Then it is step down to 415V by 2000KVA distribution transformer. The overall HT simplified schematic diagram of INTEC can be observed as below: Figure 2. Simplified schematic diagram for HT electrical system in INTEC Low Voltage Distribution System Next, the focus will be at Pencawang Elektrik No.1 where observation is done at Feeder Pillar No.1. The schematic diagram of LV side from Pencawang Elektrik No.1 can be seen from Fig. 3. INTEC used radial distribution feeder since it required lower cost, easier fault current protection, lower fault current and easier voltage control. Figure 3. MSB schematic diagram of LV at Pencawang Elektrik No. 1 Feeder Pillar Feeder Pillar No.1 is located between Block B (Cafeteria) and Block A (Computer Lab). This feeder pillar was connected from MSB. The maximum current rating for the MCCB of incoming is 600A. C:UsersuserDesktopINTECN8 Afdhalfeeder pillar 2.jpg Figure 4. Feeder Pillar No. 1 This respected feeder pillar distributes power to Bengkel Seni, Futsal Court, Cafeteria and Compound Feeder Pillar (Fig. 5). Figure 5. Schematic diagram for Feeder Pillar No.1 By applying the diversity factor, the value of protection and cable sizing shall fit the estimated load. TABLE.I shows the maximum load that the system can withstand at a time. The power at maximum demand is calculated using (2). The power factor is maintained at 0.85. TABLE I. LOAD AT MAXIMUM DEMAND Load Power (kW) MCCB Rating (A) Bengkel Seni 61.098 100 Futsal Court 38.492 63 Cafeteria 61.098 100 Compound Feeder Pillar 48.878 80 (Estimated value of load at maximum demand in Feeder Pillar No. 1) From the existing load as tabulated above, the calculated nominal current is 341.363A using (2). Therefore the rated current of MCCB for the incoming is viable where the rated current of MCCB is 600A. The cables are connected to the busbar. Types of cables used is 4 core, 0.6/1kV, Copper Cable with earth termination. The cables are terminated to the busbar as visualised in Fig.6. C:UsersuserDesktopINTECN8 Afdhalconnection 2.jpg Figure 6. Cables connection to the busbar. From the above figure, it can be observed that the cables connection quite messy where it is hard to indicate which cable is connected to their respected load. It is not labelled to identify the cable. If fault occurrence, it will took a time for the technician to perform maintenance due to the congested condition of the cable. The cable size for each line can be seen from TABLE II. TABLE II . CABLE SIZING Type MCCB (A) Cable Size (mm2) 2 x 4C XLPE 600 185 1 x 4C XLPE 100 50 1 x 4C XLPE 100 50 1 x 4C XLPE 80 35 1 x 4C XLPE 63 25 Earthing Earthing is purposely used to protect human from electric shock due to current leakage. Therefore this feeder pillar has the same earthing mechanism for safety reason. C:UsersuserDesktopINTEC1-3-2011 Firdaus N701032011023.jpg Figure 7. Earthing of Feeder Pillar No.1 From the fig. 7, all cables are terminated at the same point where it can provide easy path with a low resistance to earth and protect consumer from electric shock. However, those earth cables is not insulated which could lead to current leakage throughout the feeder pillar compartment in case the cable touch the wall of feeder pillar where it is made of steel (good conductor). Therefore, if such case happened it will cause electric shock to human who touch the feeder pillar. PROPOSED SYSTEM Radial Distribution System Improvement By referring back to the type of distribution feeder system approached at INTEC, radial type of distribution feeder is applied. Even though radial circuits are simpler to operate and maintain, in order to increase the reliability and power quality of distribution feeders, networked configurations must be used [4][5][8]. However the installation cost of network system will be major obstacle where it required total modification of system. Therefore, primary loop radial distribution system can be applied to make the system more reliable. Figure 8. Primary loop distribution system Figure 9. Proposed MCB Fig. 8 and 9 illustrate on how the system will look alike when improvement can be applied. The primary loop consists of two feeders which serve one or several loads. If one feeder fails, the normally open switch can be automatically (or manually) closed to feed the loads from the backup feeder, once the bad section has been sectionalized. This approach is very useful especially for underground cable system since the maintenance of underground cables is complex process that would create long interruptions if failure occurs. Feeder Pillar Proposed Design From the Feeder Pillar No.1, suggestion can be offered to improve the system is upgrading the feeder pillar to MSB. By referring back to fig. 5, there were two loads that have circuit breaker rating of 100A TPN MCCB while in the MSB as in fig. 3 there were spare load that can be used. Therefore those two loads from Cafeteria and Bengkel Seni can be directly connected to MSB. By this action, the congested condition of feeder pillar can be solved. Figure 10. Upgrade of feeder pillar to MSB Some benefits can be obtained if the load of Bengkel Seni and Cafeteria is transferred to MSB: If fault occur at Feeder Pillar No. 1, those loads will not being interrupted. Therefore it promises the continuity of power supply to the load. The voltage drop of each cable is shown in TABLE III. TABLE III. CABLE VOLTAGE DROP Size (mm2) mV/A/m Length (m) Ib Voltage Drop (V) 185 0.22 100 278.241 6.12 50 0.86 10 81.84 0.70 80 81.84 5.63 35 1.15 10 65.47 0.753 25 1.60 150 49.10 11.784 (Voltage drop of respected cable in the Feeder Pillar No.1) From TABLE III, it shows that the incoming cables itself occupy high voltage drop which is 6.12V for each cable. Then, if load of Bengkel Seni and Cafeteria is upgraded to MSB, the voltage drop can be observed from TABLE IV. TABLE IV. LOAD VOLTAGE DROP Load Calculated Voltage Drop (V) Future Length (m) Future Voltage Drop (V) Percentage (%) Bengkel Seni 11.75 180 12.67 3.05 Cafeteria 6.82 110 7.742 1.87 (Future voltage drop if load of Bengkel Seni and Cafeteria is upgraded into MSB) Although the voltage drop risen up since the length of occupied cable is increased, the voltage can be reduce by replacing higher cross sectional area of the cable. However, the value of voltage drop is still within the specified value of allowed voltage drop [8]. By connecting those loads to MSB, the existed feeder pillar will not be congested anymore. Those two loads that were directly connected to MSB will became spare and it can be used for future expansion of nearest building located near to the respected feeder pillar (refer fig. 11). Figure 11. Empty slot of loads acted as spare Therefore the future load will be based on TABLE V. Load Power (kW) MCCB Rating (A) Futsal Court 38.492 63 Compound Feeder Pillar 48.878 80 Spare Spare The total load at Feeder Pillar No.1 will be about only 70kW where the nominal current value from the incoming will be only 114.57V that could lead to only 2.52V of voltage drop. Earthing For earthing cable, it is wise to insulate those cables with PVC insulator to avoid any electric shock due to current leakage. It must meet the electrical standard where earth cable must be insulated with green or green/yellow insulation based on fig. 12 [6]. http://www.china-wire-cable.com/photo/6654ca80a2286ebde6efb52e3ffbab88/Earth-Cable.jpg Figure 12. Proper insulation of earth cable Comments and Suggestion The project will become a wise step to ensure that the respected Feeder Pillar No. 1 will become a reliable where it can provide a continuity of supply to a certain loads. However this project could not be implemented immediately since it will took period of time where maintenance underground cables is a complex task where it require skills and occupy more human power. In addition, the substation (PE No.1) need to be shutdown to perform the upgrade process where ironically the substation itself must distribute power to important places such as administration office where it operates 24 hours a day and 7 days per week. Therefore it is recommended that this project must be implemented during the holiday where the total shutdown of PE No.1 can be done and the task of upgrade of the system can be performed by the respected party. CONCLUSION From the case study that was carried out, it is necessary for Facility Unit of INTEC to consider those suggestions in order to overcome any problems related to low voltage power distribution system. FUTURE STUDY Surge protection was integrated within the low voltage distribution system to protect the system from lightning strikes. For future study, the recommendation that can be offered to further the respected case study is to perform research on surge protection system in low voltage power distribution system in INTEC. ACKNOWLEDGEMENT The author would like to express appreciation to his supervisor Ir. Harizan Che Mat Haris due to wise guidance and advices. For INTEC Facility Unit, the author felt pleasured to carry out this case study where he can affix his knowledge and gather more experience. Finally the author wants to offer his gratitude to people who was contributed toward the completion of this case study.
Saturday, January 18, 2020
Homeschooling vs. Public Schooling Essay
Homeschool and public school, which one is better for my child? What about the cost? Which educational setting will my child benefit the most from? These are questions that parents need to ask before making a decision such as this one. Also, parents need to know that both homeschool and public schools appeal to people of all race, religion, and political viewpoints (Romanowski, 2001). Whether a parent chooses to homeschool their child or send them to public school, is a decision that needs to be researched on the performance, cost, and their childââ¬â¢s life after school. First, when choosing which educational setting is best for their child, parents need to research studentsââ¬â¢ performance for both types of schooling. Studies have shown that children who are homeschooled score better on test than those who are in public school (Some Fascinating Facts, n.d.). Possible reasons being that the homeschooled child has more one-on-one time with the teacher, and they are able to spend as much time as they need to on the subjects that they are struggling with, if any. The time that is allowed for each part of the curriculum may be too fast or too slow for the child who is attending public school (Homeschooling vs. Public, n.d.). Children who go to public schools are able to participate in group discussions and debates (Homeschooling vs. Public, n.d.). Students are able to develop their social skills, and learn to interact with children their own age. Next, the cost can also affect whether the parent decides to homeschool orà send their child to public school. Depending on the choices that a parent makes and the supplies that are needed, homeschooling one child can cost from $300-$2500 per year (Mohr, 2012). According to the National Retail Federation in 2012, the average cost for a parent to send their child to public school was around $634 per year (Klein, 2013). Lastly, depending on which educational setting the parent chooses can affect the studentââ¬â¢s life after school. Children who were homeschooled had a GPA of 3.41 their freshman year of college, compared to other students who had a 3.12 (Some Fascinating Facts, n.d.). Students in public schools may even discover that the lessons they learned outside the classroom, in extracurricular activities such as basketball or chess club, help them cope with future challenges in the workplace (I Have A, n.d.). Therefore, choosing to homeschool or send a child to public school is not a very easy decision for parents to make; much thought and research needs to be done on studentsââ¬â¢ performance, the cost of each, and what is in store for the student after graduating. Homeschoolers score better on tests than those in the public setting. Though, children who are homeschooled are not able to participate in group discussions or even class debates. Homeschooling, for one child, can cost anywhere from $300 to $2500 per year; parents who decide to send their child to public school pay on average $634 a year. Homeschooled children had a better GPA their freshman year of college than the students who graduated from public school. The students who attend a public school and also are involved in some type of extracurricular activity, are able to cope better with the challenges in the workplace. Whatever educational setting the parent decides is best for their child, they need to know that there ar e both benefits and disadvantages with each decision. References ââ¬Å"Homeschooling vs. Public Schooling.â⬠(n.d.). _Homeschooling Ideas._ Retreived on May 24, 2014 from http://www.homeschooling-ideas.com/homeschooling-vs-public-school.html. I Have A Plan Iowa â⠢. (n.d.). _- Article_. Retrieved June 6, 2014, from https://www.ihaveaplaniowa.gov/Home/Article.aspx?articleId=IGeYH2kUApurN7JfmoFVeQXAP3DPAXXAP3DPAX&level=3XAP2FPAX6J7I3kztATGuYyXAP2BPAXDahIQXAP3DPAXXAP3DPAX. Klein, R. (August 20, 2013). ââ¬Å"Back-To-School Shopping Costs: How Much Parents Should Expect To Spend This Year.â⬠_Huffington Post._ Retrieved on May 24, 2014 from http://www.huffingtonpost.com/2013/08/20/back-to-school-shopping_n_3751079.html. Mohr, A. (August 27, 2012), ââ¬Å"How To Start Homeschooling Your Kids.â⬠_Investopedia._ Retrieved on May 24, 2014 from http://www.investopedia.com/financial-edge/0812/how-to-start-homeschooling-your-kids.aspx. Romanowski, M. H. (2001). Undoing the ââ¬ËUs vs. Themââ¬â¢ of Public and Home Schooling. _Education Digest_, _66_(9), 41. ââ¬Å"Some Fascinating Facts About Homeschool vs Public School.â⬠(n.d). _Homeschool World_. Retrieved on 24 May 2014 from http://www.home-school.com/news/homeschool-vs-public-school.php.
Subscribe to:
Posts (Atom)