Present Concept of Atom free essay sample

Subatomic particles Main article: Subatomic particle Though the word atom originally denoted a particle that cannot be cut into smaller particles, in modern scientific usage the atom is composed of various subatomic particles. The constituent particles of an atom are the electron, the proton and the neutron. However, the hydrogen-1 atom has no neutrons and a positive hydrogen ion has no electrons. The electron is by far the least massive of these particles at 9. 11? 10? 1 kg, with a negative electrical charge and a size that is too small to be measured using available techniques. [46] Protons have a positive charge and a mass 1,836 times that of the electron, at 1. 6726? 10? 27 kg, although this can be reduced by changes to the energy binding the proton into an atom. Neutrons have no electrical charge and have a free mass of 1,839 times the mass of electrons,[47] or 1. 6929? 10? 27 kg. Neutrons and protons have comparable dimensions—on the order of 2. We will write a custom essay sample on Present Concept of Atom or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page ? 10? 15 m—although the surface of these particles is not sharply defined. [48] In the Standard Model of physics, both protons and neutrons are composed of elementary particles called quarks. The quark belongs to the fermion group of particles, and is one of the two basic constituents of matter—the other being the lepton, of which the electron is an example. There are six types of quarks, each having a fractional electric charge of either +2? or ? 1? 3. Protons are composed of two up quarks and one down quark, while a neutron consists of one up quark and two down quarks. This distinction accounts for the difference in mass and charge between the two particles. The quarks are held together by the strong nuclear force, which is mediated by gluons. The gluon is a member of the family of gauge bosons, which are elementary particles that mediate physical forces. [49][50]

Christmas Quotes From the Bible

Christmas Quotes From the Bible From a religious perspective, Christmas is the celebration of the birth of Jesus Christ in Bethlehem. Quotes from the Bible are staples at many holiday plays and pageants as young children are taught the story of baby Jesus. Bethlehem. Quotes from the Bible are staples at many holiday plays and pageants as young children are taught the story of baby Jesus. Biblical Christmas Quotes   Matthew 1:18-21This is how the birth of Jesus the Messiah came about: His mother Mary was pledged to be married to Joseph, but before they came together, she was found to be pregnant through the Holy Spirit. Because Joseph, her husband, was faithful to the law and yet  did not want to expose her to public disgrace, he had in mind to divorce her quietly. But after he had considered this, an angel of the Lord appeared to him in a dream and said, Joseph son of David, do not be afraid to take Mary home as your wife, because what is conceived in her is from the Holy Spirit. She will give birth to a son, and you are to give him the name Jesus  because he will save his people from their sins. Luke 2:4-7Joseph went up from the town of Nazareth in Galilee to Judea, to Bethlehem the town of David because he belonged to the house and line of David. He went there to register with Mary, who was pledged to be married to him and was expecting a child. While they were there, the time came for the baby to be born, and she gave birth to her firstborn, a son. She wrapped him in cloths and placed him in a manger  because there was no guest room available for them. Luke 1:35And the angel answered her, The Holy Spirit will come upon you, and the power of the Most High will overshadow you; therefore the child to be born will be called holy- the Son of God. Isaiah 7:14Therefore the Lord himself will give you a sign: The virgin will be with child and will give birth to a son, and will call him Immanuel. Isaiah 9:6For to us a child is born, to us a son is given, and the government will be on his shoulders. And he will be called Wonderful Counsellor, Mighty God, Everlasting Father, Prince of Peace. Micah 5:2But you, Bethlehem Ephrathah, though you are small among the clans of Judah, out of you will come for me one who will be ruler over Israel, whose origins are from of old, from ancient times. Matthew 2:2-3The Magi from the east came to Jerusalem and asked, Where is the one who has been born king of the Jews? We saw his star in the east and have come to worship him. When King Herod heard this he was disturbed, and all Jerusalem with him. Luke 2:13-14And suddenly there was with the angel a multitude of the heavenly host praising God and saying, Glory to God in the highest, and on earth peace among those with whom he is pleased!

Founding and History of the New Jersey Colony

Founding and History of the New Jersey Colony John Cabot was the first European explorer to come into contact with the New Jersey shore. Henry Hudson also explored this area as he searched for the northwest passage. The area that would later be New Jersey was part of New Netherland. The Dutch West India Company gave Michael Pauw a patroonship in New Jersey. He called his land Pavonia. In 1640, a Swedish community was created in present-day New Jersey on the Delaware River. However, it is not until 1660 that the first permanent European settlement of Bergen was created.   The Motivation for Founding the New Jersey Colony In 1664, James, the Duke of York, received control of New Netherland. He sent a small English force to blockade the harbor at New Amsterdam. Peter Stuyvesant surrendered to the English without a fight. King Charles II had granted the lands between the Connecticut and Delaware Rivers to the Duke. He then granted land  to two of his friends, Lord Berkeley and Sir George Carteret, that would become New Jersey. The name of the colony comes from the Isle of Jersey, Carterets birthplace. The two advertised and promised settlers many benefits for colonizing including representative government and freedom of religion. The colony quickly grew. Richard Nicolls was made the governor of the area. He granted 400,000 acres to a group of Baptists, Quakers, and Puritans. These resulted in the creation of many towns including Elizabethtown and Piscataway. The Dukes Laws were issued that allowed for religious tolerance for all Protestants. In addition, a general assembly was created. Sale of West Jersey to the Quakers In 1674, Lord Berkeley sold his proprietorship to some Quakers. Carteret agrees to divide the territory so that those who bought Berkeleys proprietorship were given West Jersey while his heirs were given East Jersey. In West Jersey, a significant development was when the Quakers made it so that almost all adult males were able to vote.   In 1682, East Jersey was purchased by William Penn and a group of his associates and added with Delaware for administrative purposes. This meant that most of the land between the Maryland and New York colonies were administered by Quakers.   In 1702, East and West Jersey which were joined by the crown into one colony with an elected assembly.   New Jersey During the American Revolution   A number of major battles occurred within the New Jersey territory during the American Revolution. These battles included the Battle of Princeton, the Battle of Trenton, and the Battle of Monmouth.   Significant Events New Jersey is divided into East and West Jersey in 1674. It is reunited in 1702 when it becomes a royal colonyNew Jersey was the third state to ratify the ConstitutionNew Jersey was the first to ratify the Bill of Rights

Kristen Swansons Theory of Caring Essay Example | Topics and Well Written Essays - 1000 words

Kristen Swansons Theory of Caring - Essay Example Kristen Swanson is the Dean of the school of nursing and a distinguished professor at the University of North Carolina at the Chapel Hill. Swanson got famous for her theory of caring. She developed the theory with intent of helping pregnant women who lose their pregnancy. The theory suggested that, in a situation where a nurse demonstrates that they care about a patient, the effect is as necessary to the patient as it could be had the nurse provided clinical activities to the patient (Grove et al, 2013). The clinical activities include preventing infections and administering medications. In the theory, Swanson referred to four phenomena that entail the field of nursing. These according to the theory are nursing, patient, health and an environment. The theory defined nursing as the informed caring of the well being of other people. It further defined patients as individuals who are in the process of becoming. The theory entailed five processes that should be followed when providing care to the patient. The five processes included knowing, being with, doing for, enabling and maintaining belief. The theory highlighted that each woman gets valued and treated as an individual while each midwife gets wholly committed to woman-centered care. Swanson described ‘knowing’ as the process of trying to understand a situation as it is in another person’s life. According to the process of knowing, one should not try to assume or conclude how another person feels without the evidence (Gottlieb, 2013). It should be evidence-based. The process involves getting inf ormation from the patient through personal experiences narrated by the patient as well as thorough testing done on the patient. The process of ‘being with’ according to the theory involves being there for or with the woman. The nurse should be in a position to be there for the woman. They should be able to provide the physical, psychological and emotional support to the woman. In order to achieve this, there should be effective communication between the woman and the nurse. The nurse should listen to the woman’s needs. Being with, according to the theory does not only entail being by the woman’s side physically. It also includes protecting and valuing her ideas. This can be achieved through accounting for every action taken in midwifery with evidence (Gottlieb, 2013). The third process according to the theory entails ‘doing for’. Doing for involves doing what the woman could have done to herself if she was in a position to do so. It involves identifying those activities that the woman cannot currently do for herself because of the situation that she is currently (Peter son & Bredow, 2009). This process can be viewed as the art of midwifery. It, therefore, comprises of all those activities undertaken by the nurse or midwife with an intention of making sure the woman has a successful delivery. The fourth process is enabling. This process can be described as the acts of trying to facilitate other people achieve what they wish in their life. It entails giving people power to do what they wish. In midwifery, the process involves making it

The Physics of Soccer Essay Example | Topics and Well Written Essays - 2250 words

The Physics of Soccer - Essay Example Dropped ball: It takes place when the referee has stopped the game for any other reasons for example interference by a party that is not from within, a serious injury to a player, or when a ball is going out of order. Generally there are many rules and regulations that should be adhered to. The association of football around the world has its governing body. The governing body that is recognised across the globe is FIFA. This is the body that is known to associate wit football in all over the world. Its headquarters are in Zurich and there are other bodies that are associated with this main body of football. These bodies are: Confederation of African Football (CAF) Oceania Football Confederation (OFC) Asian Football Confederation (AFC) Union of European Football Associations (UEFA) South American Football Confederation (CONMEBOL). Confederation of North, Central American and Caribbean Association Football (CONCACAF). This essay will therefore talk about the physics of soccer. For the ball to be kicked for the goal keeper to get the ball before it goes through to the net and for all the other activities that take place in soccer to occur, there are various physical movements that support all of them. All soccer players always work hard to make certain that they maintain their shape and that they improve their kick. This essay will cover certain topics to see how they physics of soccer is. The questions that will be answered in this essay include: 1. What happens when a player kicks a ball? 2. How much vigour, in heaviness would a soccer player experience on their foot in a kick. 3. How do football players twist a soccer ball? 4. Does a huge... Initially, when the ball is kicked, the leg of the player puts in kinetic energy. Kinetic energy is that energy that is put in order to make something move. In this case, since the ball has to be moved, the kinetic energy has to be put inside the ball. The formula for this kinetic energy implementation is KE=1/2 MV2. In this case, the kinetic energy used is equal to half of the total mass of the player’s leg, multiplied by the speed (velocity) of the leg as it hits the balls, squared. The ball loses its shape when it is kicked. This is the other thing that happens when a player hits the ball. It deforms due to the energy that has been exerted on it where the place that is it turns out to be flat within a shirt tie that is over 0.01 seconds. The energy, therefore, that collides is that kinetic energy from the foot plus the energy stored in the deformed ball whereas the energy that comes out is the kinetic energy in the ball plus heat.The number of kicks given determines the ene rgy that is exerted and that which is lost. This means that the more the ball is hit, the more it deforms thus a lot more energy is lost to heat. Here Newton’s law in force is applicable because it helps in providing information on how force is used and how to determine power that is used to carry out an activity. Force, in this case, is calculated by getting the product of acceleration and mass. The mass of a ball is usually 0.4 kg meaning the only thing to be determined is the acceleration which is the change in speed of the ball.

Philosophy of life Essay Example for Free

Philosophy of life Essay There is only one way to live and achieve a meaningful life, and can be acquired by looking inside yourself and determining what is the best things you can do in your life. There are endless suggestions on how to live a meaningful life; however, these are not necessary guides or the only way because each person is different. This means that there is no one way that is correct or no one way that is false because each person is unique in their own way and have varying perspectives of life. According to Jobs, life is about living to connect the dots. He says that you can only connect the dots by looking back at decisions and things that have happened and that you cannot connect the dots for the future. He also says that you tell yourself that to live to connect the dots and that what you’re doing is setting up a dot to be connected that is when you can go with heart. He went to college and dropped out after six months and started going to classes that he was interested in instead of going to classes that were demanded and he did not enjoy. One of the classes he went to was a calligraphy class. He says that if he had not dropped out and went to this class that he would not have been so successful with the Mac. Jobs stressed the idea that without the inspirations attained in calligraphy class that were used in the design of Macintosh all personal computers would be non-existent because Windows copied Macintosh. Jobs may have started Apple in his garage with his friend but within ten years it became a $2 billion company. Shortly after the ten years, contradicting visions led to the divergence of the company and the firing of Steve Jobs. In the fall of his old job Jobs created two new companies, NeXT and Pixar, which both became very well-known and successful companies. Pixar, now the most successful animation studio in the world, went on to create the first computer animated movie â€Å"Toy Story. † NeXT was bought by Apple leading to the return of Jobs and the technology he developed at NeXT is now the heart of Apple’s renaissance. He rounds out this speech with the idea everyone should strive for what makes them happy, doing the things they enjoy. He also rejoices in the fact that enjoying the things he loves now motivated his comeback and redeemed himself in the public eye. Wallace’s speech was focused on finding a personal, deeper meaning. He gives a variety of examples of frustrating moments, while providing insight on how we react. For example: he talks about a woman in line yelling at her kids. To most people they think that’s how she treats her kids all the time leading to some misinterpretation. Instead of thinking that way, he provides alternate cases she might be dealing with, such as, suffering from extreme stress due to her husbands’ bone cancer or maybe she extended an act of kindness at her work for an individual dealing with tough circumstances. He talks about the roughness of everyday adult life, explaining the need to not jump to conclusions and extending grace, making the situation a much happier one. Wallace is not trying to give moral advice or strict guidelines to follow because this can become difficult, he only wants to give noteworthy insight to a stressful situation. He then goes on to talk about worship. Wallace explains how, in his opinion, atheism does not exist due to the fact everyone worships something, demolishing the basis behind atheism. The only choice individuals get to decide is the things they worship. If one chooses to worship money then they will never have enough of it; if one chooses to worship their body then they will always think that they are ugly and will never be happy. He says that the insidious thing about these forms of worship is not that they are sinful, but rather they are unconscious default settings. This type of worship allows beings to slip into a more lax way of thinking causing them to be more selective without ever being fully aware of what they are doing. Jobs’ approach to a skilled life is finding something one is passionate about doing and doing it no matter the route one takes. He dropped out of college after six months and just dropped-in on classes that sounded interesting to him. He found something that he really enjoyed in calligraphy class leading him to design the Macintosh and which ultimately led to the creation of personal computers. He loves the adaptability of technology and discovering the next best thing. Also, he stresses that connecting the dots is big because it leads you to your hearts desires. So according to Jobs, finding something that you love doing and living to connect the dots is the key to a prosperous, fulfilling life. According to Wallace, the approach to a more prosperous life is to think things through in a deeper more educated meaning. He talks about moments in our lives where we may get frustrated and what we can do to prevent from getting so mad. So overall, they are trying to convey the same message which is: obtaining a skillful and prosperous life. To me, I feel as though what makes life meaningful is living it to the fullest and learning from mistakes. I do not necessarily agree or disagree with either Jobs or Wallace ideals because they are not the main things to achieve a prosperous life but they are good things to incorporate in life. Life is so much more than finding something that you enjoy doing because I enjoy playing Xbox but that is not going to get me anywhere in life. Also, it is more than just thinking deeply about situations when I am going to get frustrated. I say you should always take opportunities presented in your life, not allowing them to pass you by. Take opportunities the first time and don’t be impassive assuming there will be another. With these opportunities there is always the decision to side between right and wrong. Now, I hope that everyone has a strong enough will to be able to pick the good opportunities rather than the bad ones. If you have a chance to make a difference in someone’s life or can change the outcome of a situation then why be passive and not pursue it? Life is all about choices and decision making. These things also come with responsibility and the decisions you make will lead to positive or negative consequences. Everyone makes bad choices in their life because no one is perfect and we are fallen people. With this falleness comes sin and with sin comes destruction, but we are given the opportunity to learn from our mistakes and continue to grow through them. All of these life situations leads us to be a better person to ourselves, others, and God. In order to live a thriving life, one must make conscious decisions, learn from their mistakes, and thank the Lord for opportunities and learning experiences. There is no guide on how to live a meaningful life. It is all up to the individual and whatever they see fit for themselves and their life. Though I have this view, it does not mean that it is the only way to live a meaningful life, the same goes for Jobs’ and Wallace’s opinions. Each person has some ideals that everyone can draw from to make their life better and happier, but it is not necessarily the only way to achieve a meaningful life. The true way to achieve a meaningful life is to look deep inside oneself and decide how to accomplish one’s own meaning prosperous life.

The Future of Education Essay -- Teaching Education Essays

The Future of Education In about thirty years, I will probably be sending off a child of my own to a university. There will be many changes in the way a public university will operate in three decades. These changes will be similar to the ones that occurred from the time my parents attended college to the time that I am now furthering my education at college. The same basic format of living on campus, going to classes, and partying will be followed, but getting the instruction and getting to college will go on in a different manner. The main areas of change that I foresee will be in the process of how students get to college, on-campus living, and the most, in use of technology. More and more students are now pursuing a post-high school education. This is going to be a continuing trend that will be made possible by increasing efforts from high schools, federal, state, and local governments, and the universities themselves. High schools will create more college preparatory curricula that will reach all students so that they will have the opportunities to apply and be accepted to a university. With an increased number of applicants, universities will have to build more residency halls, and create more classrooms and resources to accommodate the larger amounts of students. Universities will offer a wider scope of types of scholarships and financial aid to make sure they can reach every prospective student in need. The governments will also have a larger quantity of revenues that will be used for educational purposes including various kinds of grants, scholarships, and loans to meet all students’ needs. There will be larger push on the whole from the public to assist students further their education instead of goin... ...rking out of problems. Technology will never replace the university wholly either. There is an additional education to just academics and athletics that takes place on a college campus. Many lessons and experiences that are crucial to life are found in the university. These changes are the same that my parents are seeing now as they watch me attend the same university from which they graduated. I imagine similar changes will be seen by my children sixty years from now, when they possibly send off their own children to a public university. In general, public universities will always be in a campus setting, with old buildings and large classes, but the campus and classes will change in the same ways they have already been changing. Works Cited Hanck, J. Andrew. â€Å"Future of the University† Carroll, J. Ryan. â€Å"How My Children Will Get Their Education†

Linear Programming in Finance, Accounting and Economics

Linear Programming in Finance, Accounting and Economics Sijia Lu 7289928683 Abstract This article is literatures review about five articles, which apply linear programming to Finance, accounting and economics. The mathematical method is found of crucial importance in those fields. The paper shows how theoretical inference in linear programming throws light upon realistic practice, and how empirical evidence supports those theories. Keywords: finance; accounting; economics; linear programming; investment analysis Linear Programming in Finance Application of Linear Programming to Financial Budgeting and the Costing of Funds† explored how to allocate funds in an enterprise by applying linear programming. As Charnes, Cooper and Miller analyzed, at least three problems are to be considered to solve the allocation problem: 1) Plans for production, purchases, and sales under certain structure of the firm’s assets, in order to maximize its profit or reach other objectives. 2) Th e change of the firm’s profit per unit change in the structure of the assets. 3) Opportunity cost of the firm’s funds.The article starts with a simple example with one commodity and one warehouse. Let B be the fixed warehouse capacity, A be the initial stock of inventory in the warehouse, xj be the amount to be sold in period j, yj be the amount to be sold in period j, pj be the sales price per unit in period j, and cj be the purchase price per unit in period j, then we have due to the cumulative sales constraint; due to the warehouse capacity constraint; due to the buying constraint; due to the selling constraint; and with our goal of maximizing The dual problem is also obvious.It is to minimize subject to and to where As we learned, â€Å"dual theorem of linear programming† says that the two optimal values of the original problem and the dual problem should be equal. Using this theorem, the authors then reached a new method of evaluating assets. Because , we h ave in which the two sides must have the same units of measure. So it is now obvious that t*k represents the value per unit of net warehouse capacity and u*k represents the value per unit of initial inventory in the warehouse. Similarly, consider the financial problem, which has liquidity constraints as here j-? represents payments and j-r represents receipts, M0 is the initial cash available and M is the balance the firm desired the maintain. By examining the dual problem of this, we can find corresponding dual variables for the problem called, say, vk. Again, from the equality we found before, we can learn that the two sides of the equation have the same units of measure. It is then seen that the v’s should be dollars per unit time per dollar invested. The valuation of assets or investments is of crucial importance to any business.So far, by simply applying the dual theorem, Charnes, Cooper and Miller have created a new method of evaluating assets or investments. This metho d of evaluating is also easy to find out answers. It is intelligent to examine the units of measure rather than try to solve the specific problems. The interesting thing is that in realistic problems, we can find true meanings of theoretical dual variables. Then the authors mixed the two former problems together to see a more realistic case – a warehouse problem with financial constraints.So the following new constraints are added: Now if we define We’ll get the new dual problem: Here, V1 is the incremental cumulative internal yield rate. Or it is the opportunity cost the capital invested – â€Å"it shows the net amount to which an additional dollar invested in the firm will accumulate if left to mature to the end of the planning horizon. † This is also easy to understand in terms of economics, maximizing profit can be the same as minimizing the opportunity costs. The article then went through several practical problems using the dual variable evaluating method.It is also interesting to find out that all the commodities are directly linked to the funds-flow while the goods-flow can be avoided in the warehouse problem with multiple commodities. An Example â€Å"A linear programming model for budgeting and financial planning† created an accounting experiment in which the dual variables introduced earlier were calculated which can also be considered as a sensitivity analysis. This can be seen as application and verification of Charnes, Cooper and Miller’s earlier theory. In the linear programming problem listed below, (1) represents the interests earned with a rate of 0. 29%; (2) holds because firm’s sale of securities will not be more than the beginning balance of this amount; (3) represents the maximum collection of receivables will not exceed the beginning balance of account receivable; (4) means the initial cash balance constraints the purchase of securities; (5) indicates â€Å"contribution† on a unit s ale per unit deduction from the ending goods inventory, with prevailing selling price being $9. 996 and cost of production $2. 10; (6) holds because of the cost structure: in the $2. 10 cost, $1. is the material cost and $1. 1 is the conversion cost (direct labor cost and direct overhead); (7) represents the production capacity limits by limiting the value of raw materials; (8) holds because conversion is also limited to raw materials at the beginning of the period; (9) means market limit to the sales by constraint on the standard cost; (10) means sales are also limited because it can not be more than the beginning balance of completed goods; (11) represents the repayment of loans will not exceed the beginning balance of outstanding loans. 12) indicates the limit of accounts payable; (13) is the depreciation charge equation with a rate of 0. 833; (14) indicates the structure of costs to be incurred in the current period, including fixed expenses ($2,675,000), variable cost, effectiv e interest penalty for discounts not taken on accounts payable (at a rate of 3. 09%), and interest on loans (at a periodic rate of 0. 91%); (15) represents income tax is accrued at 52% of net profit and the dividend equals to $83,000 plus(minus) 5% of the excess(shortage) of the expected profit, $1,800,000; (16) is the limit of minimum cash balance required by the company policy; (17) holds because an expected price rise in the next period leads the company to decide the ending inventory should be at least the minimum sales expected in the next period; (18) means ending materials must be sufficient for the production of next period; (19) is the payment limits: all income taxes payable and dividends must be paid by the end of current period.And because we can considers our goal as maximizing net additions to retained earnings, we have substitute the K’s with figures of balance sheet, which is showed below, we can calculate the X’s As we learned before, a dual evaluator indicates the change in net addition to retained earnings if the constraints corresponding to the given evaluator were relaxed by one dollar. For example, the dual evaluator of (7) is $3. 594936. This means that if production capacity ere increased in case that exactly one additional dollar’s raw material is used, the retain earnings will increase $3. 94936. To see this case in detail, table 5 shows what happens after altering the firm’s raw material processing capacity by one unit. Additional cash can be obtained in 3 ways: a) selling securities; b) borrow from a bank; c) delay payment on account payable. But the cheapest way is a). Thus we can calculate the opportunity cost per dollar by: the firm loses interest income of $0. 00229 of every dollar of securities sold while savings from taxes and dividends can relieve this loss, calculate the periodic loss, it is $0. 00104424. Evaluate this loss from an aspect of infinite periods:Apply this to the last step of deductio n, we get $3. 594936, again. Our former inference is thus confirmed. Not only from the mathematical aspect but also from the accounting aspect. In this case, linear programming offers a highly flexible instrument. As in the case, â€Å"all sensitivity changes within any specific part of the model are evaluated in terms of their effect on the entire model. † It is also highlighted, as we mentioned above, this kind of evaluation can be done without actually solving the entire problem. Thus this method is not only reasonable but also convenient.Linear Programming in Economics So far we have seen the application of linear programming in the field of finance and accounting. Now let’s see an interesting example which apply linear programming to economics. A linear program can approximate product substitution effects in demand. In general, the demand function may be written as (1) where p is an N * 1 vector of prices, q is an N * 1 vector of quantities, a is an N x 1 vector o f constants, and B is an N x N negative semidefinite matrix of demand coefficients. And the objective function for the competitive case can be written as maximize 2) where c(q) is an N * 1 vector of total cost functions, q >= 0, AND Substitute (1) into (2) We have the new objective function Maximize (3) In economics, we know that the total welfare of transactions can be separated into two parts: consumers’ surplus and producers’ profit. In mathematics, these two parts can be written as We also represent the resource scarcity by adding constraints (4) The Kuhn-Tucker conditions, which are necessary (but not su? cient) for a point to be a maximum are: Thus the Kuhn-Tucker necessary conditions for the original problem are equation (4) plusFor monopoly market, the object function is a little different, it is to Maximize (5) while the Kuhn-Tucker necessary conditions are equation (4) plus From the competitive market objective function (3) and the monopoly market objective f unction (5), we can see that both involve a quadratic form in p. In order to set up the LP tableau, define a function representing the area under the demand curve as (6) And the total expenditure function as (7) Then we can derive the following figure for (6) and (7): The representation of the piecewise linear approximation in LP is shown for the two-good, separable-demands case, in table 1. here costs for the ith product in the jth activity producing it are represented by cij; unit outputs of the ith product in the jth activity producing it are given by yij; The quantities sold of the ith product corresponding to the endpoint of the jth segment are defined as qj; Values of W for the ith commodity corresponding to the amount sold, qj, are given by wij; Values of R for the ith commodity corresponding to the amount sold, qj, are represented by rij; The target level of producer's income is denoted by Y*.Note that the LP problem has its certain properties. In table 1, no more than two a djacent activities from the set of selling will enter the optimal basis at positive levels. And also, by use of the function R in the constraint set, the model includes a measure of income at endogenous prices. The article then looks into a more complicated case where there exists substitution of demands. That is, one good’s demand can be substituted by the other one’s.An assumption, as the basis of the approximation procedure developed for this situation, is that commodities can be classified into groups, which allow the marginal rate of substitution (MRS) to be zero between all groups but nonzero and constant within each group. Then consider a group consisting of C commodities. We can create table 3 for the situation: The authors pointed out that â€Å"each of the blocks of activities [W's R's -Q's 1] constitutes a set of ‘mixing’ activities for one segment of the composite demand function for the commodity group†. i. e. [W's R's -Q's 1]T=Relative prices of commodities in the group are assumed fixed, both within and between segments, and are defined by Also define the quantity index as and price index as where Then we create table 4, which is a simple extension of the single product case. Only the selling activities are shown. in which The price-weighted total quantity is (8) To extend the case of demand in fixed proportions within a group, define matrix A as The elements in matrix Q can now be calculated as (9) substitute (8) into (9), we have The price-weighted total quantity, q*sm, is given by so (9) is equal to hen calculate the elements of W and S Now we are able to calculate the MRS By rearranging we get MRS=-p2/p1, the required result. An Expansion The use of linear programming in the field of economics was continued in the paper â€Å"Endogenous Input Prices in Linear Programming Models†. In this paper, the author provides a method for formulating linear programming models in which one or more factors have upw ard sloping supply schedules, and the prices are endogenous. Instead of examining the demand function, Hazell starts from the function of the producers, whose goal is to maximize their profit here x is a vector of output levels; p and c are vectors of market prices and direct costs, respectively; d is a vector of labor requirements; L is the amount of labor employed at wage w. Now if the buyer of labor is monopoly, or the market is a monopsolistic market,due to economic definition we’ll have Then the problem becomes Again we use Kuhn-Tucker conditions to solve for the optimal solution. L;0, so we have = w+? L Thus, given the optimal amount of labor used (L*), the associated market-clearing wage is w* = a + PL*, and this is smaller than ? by PL*.This is correct by intuition and empirical evidence. Similarly, if the situation is competitive market , we can derive? =w, which is quite different from the former case. Using the method of Duloy and Norton, Hazell calculate the suppl y curve of labor, which is actually a stepped function, showed as below: Hazell pointed out that â€Å"stepped supply functions arise artificially from using linearization techniques, but they also arise in reality when different sources of labor are identifiable which can be expected to enter the labor market as the wage reaches critical levels. And then he also mentioned another way to find out the supply function of labor. This article is a development and application of the former article. The method for achieving these results utilizes the sum of the producers' and consumers' surplus, and is an extension of existing methods for solving price endogenous models of product markets. Linear Programming in Daily Investing Linear programming is such a useful tool that we can find its advantages in finance, accounting and also economics. But what about in our daily life?How can linear programming help when we make decisions about our own investing, say, our own financial portfolios in various stocks? In 2004, C. Papahristodoulou and E. DotzauerSource wrote an article about these questions, named â€Å"Optimal Portfolios Using Linear Programming Models†. This paper is about three models: The classical quadratic programming (QP) formulation and two new ones — (i) maximin, and (ii) minimization of mean absolute deviation. The first model is to s. t. where i and j are securities; ?ij is the covariance of these securities; xj is the portfolio allocation of security j.These are the variables of the problem and should not exceed an upper bound uj; ? is the minimum (expected) return required by a particular investor; and B is the total budget that is invested in portfolio. The second model is established so the minimum return is maximized. Regarding the constraints, one might assume that every period's return will be at least equal to Z. For period t, this constraint can be formulated as: where rjt, is the return for security j over period t. The third mod el simplifies the Markowitz classic formulation is to use the absolute deviation as a risk measure.It is proved by Konno and Yamazak that â€Å"if the return is multivariate normally distributed, the minimization of the mean absolute deviation (MAD) provides similar results as the classical Markowitz formulation†. And as is known, MAD is defined as We define first all Yt >0 variables,t = 1, †¦ ,T. These Yt variables can be interpreted as linear mappings of the non-linear Thus, the objective function is to minimize the average absolute deviation and the constraints added are Then the author tested all three models, using monthly returns from 67 shares traded in the Stockholm Stock Exchange (SSE), between January 1997 and December 2000.As expected, the maximin formulation yields the highest return and risk, while the QP formulation provides the lowest risk and return, which also creates the efficient frontier. The minimization of MAD is close to Markowitz. The results are as follows: All three formulations though, outperform the top equity fund portfolios in Sweden. They also conclude, â€Å"When the expected returns are confronted with the true ones at the end of a 6-month period, the maximin portfolios seem to be the most robust of all. † Conclusion We have seen the crucial importance of linear programming to finance, accounting, economics and also our daily life.It turns difficult problems into easier ones. By using this mathematic way of solving problem, we can achieve more intelligent choices while wasting less. The study of linear programming is so useful that in the future, it will hopefully find more use in the world of economics and management. References â€Å"Application of Linear Programming to Financial Budgeting and the Costing of Funds†, A. Chares, W. W. Coopers, and M. H. Millerss, The Journal of Business, Vol. 32, No. 1, Jan. , 1959 (pp. 20-46) â€Å"A Linear Programming Model for Budgeting and Financial Planning†, Y. Ijiri, F. K. Levy, and R. C.Lyon, Journal of Accounting Research, Vol. 1, No. 2, Autumn, 1963, (pp. 198-212) â€Å"Prices and Incomes in Linear Programming Models†, John H. Duloy and Roger D. Norton, American Journal of Agricultural Economics, Vol. 57, No. 4, Nov. , 1975 (pp. 591-600) â€Å"Endogenous Input Prices in Linear Programming Models†, Peter B. R. Hazell, American Journal of Agricultural Economics, Vol. 61, No. 3, Aug. , 1979 (pp. 476-481) â€Å"Optimal Portfolios Using Linear Programming Models†, C. Papahristodoulou and E. Dotzauer, The Journal of the Operational Research Society, Vol. 55, No. 11, Nov. , 2004 (pp. 1169-1177)

Contextual Factors of the Classroom

This paper discusses the contextual factors within the school community and how they can impact the acquisition and learning procedure. The paper looks at different factors such as community, school territory, schoolroom, and pupil features. Within these factors an account is given for how each one can impact pupil acquisition and accomplishment. Besides, deductions are discussed and schemes are given for how instructors can integrate contextual factors and still make pupil accomplishment. robert.askey2010-09-20T15:00:00 Space Contextual Factors of the Classroom, School, and Community and How They Affect the Teaching and Learning Process Many people think that there are n't many contextual factors within the learning profession. They think that the instructor teaches the lesson, the pupils listen softly, and so they complete their assignments. While that may be a â€Å" dream † schoolroom, is it far from world. There are many deductions that go along with the profession. The environing community, every bit good as, the school and school territories have a batch of lending factors that affect the instruction and acquisition procedure. Classroom kineticss and pupil features are besides of import factors when it comes to teacher planning and pupil acquisition. Teachers need to take all of these factors into history to guarantee that all the demands of our pupils are met. Community Factors The community plays a large portion in the acquisition procedure and school accomplishment. Some communities tend to go a really high transient country. Many people move about depending on where occupations are located, which leads to pupils coming and traveling throughout the academic school twelvemonth. This instability causes a break in learning. Achievement spreads are created because pupil direction is non consistent, which leads to hapless motive within pupil acquisition. Besides, some provinces may hold a batch of English Language Learners ( ELL ) depending on where they are located geographically. States that are close to the outside boundary lines may detect an addition in ELL pupils, which excessively, may do a challenge when supplying direction. Teachers will hold to accommodate their direction to supply schemes for ELL pupils and do certain that they enrich their vocabulary cognition. Different economical positions may besides be a conducive factor within the instruction and acquisition procedure. Schools that are located in low socio-economic countries may non acquire the support or resources from the outside community. Parents are non able to supply supplies for their kids or the schoolroom, which may impede instructional chances for pupils. Whereas, schools that are located in higher economic countries have a batch of community support and local contributions to assist supply pupils with equal resources they need for acquisition. District Factors School Districts have an huge influence when it comes to the acquisition and learning procedure. They are the 1s that pave the manner for academic success. Recently, many territories have been traveling through a budget deficit. They are being forced to put off instructors and make full the places with long term replacements. Many long term replacements do non hold the same educational background and preparation that licensed instructors have, which may ensue in academic failure with our pupils. Districts are besides being forced to cut many plans and resources. The most frequent plans to be cut are extracurricular activities. Many pupils gain motive from these extracurricular activitiesrobert.askey2010-09-20T15:01:00 I could non hold more.. Students are required to keep a certain class point norm which forces pupils to seek harder in school and advance academic accomplishment. In David Reeves ‘ ( 2008 ) article, a survey was conducted to mensurate the relevancy between extracurricular activities and pupil accomplishment. Woodstock High School, in Woodstock Ill. , found that pupils who took portion in three or four extracurricular activities during the twelvemonth had dramatically better classs than those who participated in no extra-curricular activitiesrobert.askey2010-09-20T15:02:00 This is a great illustration of how to utilize a mention to back up the point you are seeking to make.. Classroom Factors The schoolroom is the most of import factor when it comes to student acquisition and teacher direction. It is a topographic point where pupils should experience safe and acquisition should be promoted, therefore it should be clean and in superior status. All pupil desks and chairs should be in good status. If classroom furniture is uncomfortable, pupils may lose their deficiency of focal point. Students should besides be confronting the way where direction is being taught, if they have to turn around to see, their focal point will be lost. The stuffs in the schoolroom should be organized and available for easy entree. This will let small clip to be taken off from direction. Technology resources are another lending factor for pupil acquisition and the instruction procedure. Resources such as computing machines, SMART boards, and Elmos, supply a more custodies on larning experience for pupils. These resources will let instructors to fix our pupils for the engineering savvy professional community. Another factor within the schoolroom is a strong sense of regulations and modus operandis. Students need to cognize and stay by schoolroom modus operandis and regulations. In the schoolroom, pupils frequently spend a batch of clip waiting for a new activity to get down. This can take to a batch of otiose instructional clip. It is of import for instructors to hold effectual modus operandis in topographic point so that the maximal sum of instructional clip can be utilized. Proper modus operandis and regulations besides lead to minimum breaks and behaviour jobs, hence advancing the acquisition procedure. Concerted acquisition is another of import factor for the acquisition procedure. Students are able to work together and construct a schoolroom community. During the grouping pupils are typically forced to utilize job work outing schemes to come up with solutions and heighten critical thought accomplishments. Concerted groups are besides typically heterogenous so that varied degrees are incorporated into each group ; everyone has something different to convey to the group. Student Features Students frequently come into our schoolroom with a whole batch of â€Å" luggage. † There are many factors that pupils have to cover with which can impact their acquisition procedure. Many schoolrooms today are multicultural. It is of import that instructors understand the cultural differences within their schoolroom, and acquire to cognize their pupils. Students may come from a background where instruction is non good respected and higher instruction is non an option. This may hold an consequence on those single pupils ‘s accomplishment. Teachers will necessitate to modify and prosecute acquisition to assist actuate these pupils. In today ‘s schoolroom ‘s, many pupils have particular demands. Teachers need to recognize that non all pupils are on the same degree, and that direction should be differentiated to run into the demands of each pupil. Most schools have adopted the inclusive theoretical account where kids with particular demands spend at least half of the twenty-four hours in a general instruction schoolroom with particular helpers. Inclusive classrooms non merely benefit pupils with particular demands, but the general instruction pupils as good. Teachers are provided an helper to assist during direction which will let more attending to all pupils within the schoolroom. Particular needs pupils are besides introduced to more grade degree content, assisting them reach IEP ends. In bend, this will be good towards the acquisition procedure for all pupils. Students besides have different larning modes. Some pupils may be an audile scholar, they need to hear waies or complete unwritten assignments. Other pupils may be a ocular scholar ; ocular images are a large portion of their direction penchant. Students that need to make things and travel about may be kinaesthetic scholars. In a typical schoolroom, there will be a broad assortment of these modes. Teachers should supply an mixture of instructional techniques to run into the larning demands of all pupils. Not all pupils come into your schoolroom with the same cognition or accomplishments. Many instructors have to accommodate their direction to re-teach or construct background on the approaching content. Depending on the environing community, pupils may non hold the assumed societal experiences. Teachers frequently need to pass excess clip presenting pupils to the content, edifice background, and conveying in regalia to assist pupils link with the subject being presented. Besides, pupils coming from the old twelvemonth may hold non learned of import constructs used in the following class degree. Many instructors have to pass the beginning of the school twelvemonth learning constructs that should hold been mastered in the old twelvemonth. With the deficiency of accomplishments or prior larning it can take twice every bit long to accomplish the acquisition ends. Instructional Deductions When be aftering direction, instructors should maintain many deductions in head. Teachers should go painstaking of where there pupil comes from. They need to retrieve that non all pupils come from the same civilization and socio-economic background. Some pupils require more forbearance and apprehension, which they may non have at place. Not all pupils have the same support system at place. Many parents may work, or there may be merely one parent who works two occupations. We, as instructors, need to be more understanding to our pupils ‘ emotional demands. These pupils may necessitate excess instructional clip to assist accomplish larning ends. Student larning manners is another deduction that instructors need to maintain in head when be aftering direction. All pupils learn in different ways. To assist with accomplishment, instructors should offer assorted activities from each mode. In my schoolroom I give pupils an assignment bill of fare. Each bill of fare consists of different assignments measuring the same criterion. The assignments are geared to all the different acquisition modes, leting pupils to take which activities they want to make. Giving pupils a bill of fare of assignment picks will non merely increase pupil accomplishment, but will besides heighten pupil motive and battle. robert.askey2010-09-20T15:06:00 Great scheme. When be aftering direction, instructors need to take all of these contextual factors into history. As a instructor, we have to come to the realisation that each pupil is different. Whether it ‘s the community, school territory, schoolroom, or the pupil features, each pupil comes with a â€Å" bag † of who they are. We need to encompass their â€Å" bag † and assist them accomplish academically, socially, and emotionally.

Concepts Of Lifetime Fitness Essays - Physiology, Heat Transfer

Concepts Of Lifetime Fitness Essays - Physiology, Heat Transfer Concepts of Lifetime Fitness September 1, 1997 Homeostasis is the state of equilibrium in which the internal environment of the human body remains relatively constant. Two excellent examples of homeostasis are how the body maintains a constant temperature and blood pressure during strenuous physical activity or exercise. Although there are many other activities in the body that display homeostasis, I will only discuss these two. Temperature in the human body is usually kept at approximately 37 degrees Celsius. To maintain such a strict temperature, the body has a few functions to combat the outside elements. People cannot make themselves cold as readily as make themselves hot, however I will mention both homeostasis functions. When the external temperature decreases, a portion of the brain called the hypothalamus detects the drop by means of the blood. To compensate, the brain sends chemical and electrical impulses to the muscles. These impulses tell the muscles to begin to contract and relax at very high intervals. This is commonly known as shivering. The production of Adenosine Triphosphate or ATP in the mitochondria of the muscles produces heat. If the body temperature does not rise immediately after this, then a second function begins. The brain will signal the blood vessels near the skin to constrict or narrow in diameter. This occurs so the heat deep in the muscles is conserved. Sinc! e the vessels are now smaller in diameter, less blood is needed to fill them. Since less blood is needed through the vessels, the heart begins to slow. If the body remains in this slowed state, hypothermia could result. Hypothermia is the condition in which metabolic processes are inhibited. The medical world has taken advantage of this by inducing hypothermia in patients that are undergoing organ transplants. To fight temperatures higher than normal, as in exercise or on hot days, the body reacts in the opposite way than with cold. Again, the hypothalamus detects the change of temperature in the blood. The brain signals blood vessels not to constrict, but to dilate. This increases the diameter of the vessels, and results in the need for more blood. Since more blood is needed to fill the vessels, the heart pumps faster and that causes respiration to increase. The increased respiration will make the body exhale some of the internal heat, like placing a fan in a window to cool a room. The blood vessels are dilated so the heat deep in the muscles is easily released. Another commonly known mechanism to fight heat is sweating. Sweat glands found throughout the body are stimulated by the hypothalamus to excrete sweat and when the sweat evaporates, the skin is cooled. If the body is not cooled by the time all of the internal water supply is used, it could go into hypothermia. Th! is is when the body becomes dehydrated and proteins begin to denature. Hypothermia can result in certain death if the water supply is not immediately replenished. Some advantages to these mechanisms are the cleansing effect of sweating and weight loss. Sweat, when excreted, removes waste materials such as bacteria and water. Fat material, during exercise, is actually "eaten" by the body thus reducing overall weight. The second example of homeostasis is blood pressure regulation. When the hydrostatic pressure of blood is above normal, pressure sensors in the blood vessels tell the brain through chemical means. The brain will then stimulate the heart to contract or beat in slower intervals. This will cause less blood to enter the blood vessels and that will lower the hydrostatic pressure. If the pressure is lower than normal, the exact opposite happens. The sensors in the vessels tell the brain and the brain will then make the heart beat faster so more blood enters the vessels and the pressure is raised. The body uses many mechanisms to regulate temperature and blood pressure. Be it stimuli to the heart from the brain or messages from the blood, the body maintains its internal environment through a process called homeostasis.

Chemalit Chemicals

Less: Amortization expense (1041. 67)123,958. 33 Total assets $491,197. 91 Liabilities 0 Stockholders Equity Contributed Capital 500,000. 00 Retained Earnings (8,802. 09) Total Stockholders equity 491,197. 91 Total Liabilities and Stockholders equity $491,197. 91 CHEMALITE, INC Cash Flow Statement For the period ended June 30, 2003 Cash flows for operating activities Cash paid to suppliers $ (75,000. 00) Cash paid for legal fees, charter printing costs (7,500. 00) Net cash flow from operating activities (82,500. 00) Cash flows for investing activities Cash paid to purchase machinery (62,500. 00) Cash flows from financial activities Cash received from shareholders 375,000. 00 Cash at end of year $230,000. 00 4. Financial Statements for stockholder’s for year 2003 CHEMALITE, INC Balance Sheet At December 31, 2003 Assets Cash $ 113,000. 00 Accounts Receivable 69,500. 00 Inventory 55,000. 00 Property, Plant and Equipment$ 212,500. 00 Less: Accumulated Depreciation10,885. 42 201,614. 58 Patent 125,000. 00 Less: Amortisation 25,000. 00 100,000. 00 Total Assets $ 539,114. 58 Liabilities 0 Stockholders Equity Contributed Capital 500,000. 00 Retained Earnings 39,114. 58 Total Stockholders equity 539,114. 58 Total Liabilities and Stockholders equity $ 539,114. 58 Income Statement For the period ended December 31, 2003 Revenue $ 754,500. 00 Expenses Cost of Goods Sold $ 545,000. 00 General and administrative expense 87,500. 00 Research and development expense 23,750. 00 Advertisement expense 22,500. 00 Interest expense 750. 00 Amortisation expense 25,000. 00 Depreciation expense 10,885. 42 Cash Flow Statement For the period ended December 31, 2003 Cash flows for operating activities Cash received from customers $ 685,000. 00 Cash paid to suppliers and employees(600,000. 00) Cash paid for administrative expenses(87,500. 00) Cash paid for research and development(23,750. 00) Cash paid for Advertising(22,500. 00) Net cash flow from operating activities $ (48,750. 00) Cash flows for investing activities Cash paid to purchase machinery(212,500. 00) Net cash flow from investing activities (212,500. 0) Cash flows from financing activities Cash received from shareholders 375,000. 00 Cash paid for interest on loan (750. 00) Net cash from financing activities 374,250. 00 Cash at end of year $ 113,000. 00 5. Report to Shareholders:- To Our Shareholders The year 2003 has been a very significant year for Chemalite, Inc with a successful commercial launch of its product and revenue earnings of over $700,000. The initial profits made in the first year are moderate due to the high ini tial expenses made on setting up the business and advertising. The financial health of the company is healthy with zero liabilities and a positive cash balance throughout the year despite the huge cash outflow from initial investment behind machinery and installation. The new invention of Chemalite has been patented by the company and is showing good value for business use. In addition to our current revenue sources we are expecting a great deal in the coming year which will be prestigious for the company as well as profitable. The committee for the Olympic Games, Athens 2004 has placed a firm order with us for 60,000 Chemalites which will generate $90,000 in revenue. The Olympics committee wants to give a Chemalite to each person in the opening ceremony. The athletes and fans will light their Chemalites which will be symbolic of the Olympic flame. This will bring us publicity and will improve our future marketable value. Going forward, we will have guaranteed sales from any demands for fireless ignition as Chemalite does not expect any competitors to come up with a similar product before five years. Lastly, we thank the shareholders for their continuous support and belief in the company.

Inclusion of Sen into mainstream schools Essay Example | Topics and Well Written Essays - 1000 words

Inclusion of Sen into mainstream schools - Essay Example Education shall be free, at least in the elementary and fundamental stages. Elementary education shall be compulsory. Technical and professional education shall be made generally available and higher education shall be equally accessible to all on the basis of merit (n.d.)" Though there are tribes that are unaware of any formal educational system, still knowing and learning the culture that they have and the important skills to subsist and to live harmoniously with his country can be considered education. Included in the kinds of persons that have the right to be educated are those who have learning and other kinds of physical and psychological impairments. These are students with learning disabilities that require special educational needs for them to be educated. They are students with special education needs or simply SEN students. The Education Act of 1996 considers a child has "special education needs" if he has a learning difficulty. In this case, a child has learning difficulty if "he has a significantly greater difficulty in learning than the majority of children of his age," and "he has a disability which either prevents or hinders him from making use of educational facilities of a kind generally provided for children of his age in schools within the area of the local education authority" (Education Act of 1996). Students with Special Education Needs (SEN) have difficulties in l... Examples of students that needs special attention are those having known disabilities like: Attention Deficit (Hyperactivity) Disorder (ADD/ADHD), Aspergers, Autistic Spectrum Disorders, Cerebral Palsy, Down's Syndrome, Emotional Behavioural Difficulties, etc. (Types of Special Needs 2003). Evidences have backed up the necessity of SEN inclusion. Foremost of these are the reports submitted by the Alliance for Inclusive Education and Disability Equality Into Education that shows the feasibility and effectiveness of inclusive education for disabled children with different impairments (British Council of Disabled People 2005, p.2). The paper submitted by 2020 campaign laid down the advantages supporting the claim of SEN advocates that inclusion is beneficial for disabled students. Through this system, they have been given the opportunities to make friends, to improve their social and academic skills and to initiate a change in this world (Inclusion is Working, 2005, p.1). Also statistics reveal that children from special schools "do less well in exams, have higher rates of unemployment and are often more socially isolated as they grow older than their peers in the mainstream (Inclusion is Working 2005, p.2)." With these papers backing up the inclusion of SEN into mainstream education, the Special Education Needs and Disability Act 2001 has been legislated to provide a revised statutory framework for inclusion. It empowers SEN students to attend a mainstream school, unless their parents choose otherwise. Audit Scotland and HMIE released a report of the findings made by the commission. These organisations found out that to make mainstreaming pupils with SEN work, schools should have time to join their headteachers and