Explore the Three Laws of Thermodynamics

The branch of science called  thermodynamics deals with systems that are able to transfer thermal energy into at least one other form of energy (mechanical, electrical, etc.) or into work. The laws of thermodynamics were developed over the years as some of the most fundamental rules which are followed when a thermodynamic system goes through some sort of energy change. History of Thermodynamics The  history of thermodynamics  begins with  Otto von Guericke  who, in 1650, built the worlds first  vacuum pump  and demonstrated a  vacuum  using his  Magdeburg hemispheres. Guericke was driven to make a vacuum to disprove  Aristotles long-held supposition that nature abhors a vacuum. Shortly after Guericke, the English physicist and chemist  Robert Boyle  had learned of Guerickes designs and, in 1656, in coordination with English scientist  Robert Hooke, built an air pump.  Using this pump, Boyle and Hooke noticed a correlation between  pressure,  temperature, and  volume. In time,  Boyles Law  was formulated, which states that pressure and volume are  inversely proportional.   Consequences of the Laws of Thermodynamics The laws of thermodynamics tend to be fairly easy to state and understand ... so much so that its easy to underestimate the impact they have. Among other things, they put constraints on how energy can be used in the universe. It would be very hard to over-emphasize how significant this concept is. The consequences of the laws of thermodynamics touch on almost every aspect of scientific inquiry in some way. Key Concepts for Understanding the Laws of Thermodynamics To understand the laws of thermodynamics, its essential to understand some other thermodynamics concepts that relate to them. Thermodynamics Overview - an overview of the basic principles of the field of thermodynamicsHeat Energy - a basic definition of heat energyTemperature - a basic definition of temperatureIntroduction to Heat Transfer - an explanation of various heat transfer methods.Thermodynamic Processes - the laws of thermodynamics mostly apply to thermodynamic processes, when a thermodynamic system goes through some sort of energetic transfer. Development of the Laws of Thermodynamics The study of heat as a distinct form of energy began in approximately 1798 when Sir Benjamin Thompson (also known as Count Rumford), a British military engineer, noticed that heat could be generated in proportion to the amount of work done ... a fundamental concept which would ultimately become a consequence of the first law of thermodynamics. French physicist Sadi Carnot first formulated a basic principle of thermodynamics in 1824. The principles which Carnot used to define his Carnot cycle heat engine would ultimately translate into the second law of thermodynamics by the German physicist Rudolf Clausius, who is also frequently credited with the formulation of the first law of thermodynamics. Part of the reason for the rapid development of thermodynamics in the nineteenth century was the need to develop efficient steam engines during the industrial revolution. Kinetic Theory the Laws of Thermodynamics The laws of thermodynamics do not particularly concern themselves with the specific how and why of heat transfer, which makes sense for laws that were formulated before the atomic theory was fully adopted. They deal with the sum total of energy and heat transitions within a system and do not take into account the specific nature of heat transference on the atomic or molecular level. The Zeroeth Law of Thermodynamics This zeroeth law is sort of transitive property of thermal equilibrium. The transitive property of mathematics says that if A B and B C, then A C. The same is true of thermodynamic systems that are in  thermal equilibrium. One consequence of the zeroeth law is the idea that measuring  temperature  has any meaning whatsoever. In order to measure temperature,  thermal equilibrium  must be  reached between the thermometer as a whole, the mercury inside the thermometer, and the substance being measured. This, in turn, results in being able to accurately tell what the temperature of the substance is. This law was understood without being explicitly stated through much of the history of thermodynamics study, and it was only realized that it was a law in its own right at the beginning of the 20th century. It was British physicist Ralph H. Fowler who first coined the term zeroeth  law, based on a belief that it was more fundamental even than the other laws. The First Law of Thermodynamics Though this may sound complex, its really a very simple idea. If you add heat to a system, there are only two things that can be done -- change the  internal energy  of the system or cause the system to do work (or, of course, some combination of the two). All of the heat energy must go into doing these things. Mathematical Representation of the First Law Physicists typically use uniform conventions for representing the quantities in the first law of thermodynamics. They are: U1  (or  Ui) initial internal energy at the start of the processU2  (or  Uf) final internal energy at the end of the processdelta-U  Ã‚  U2  -  U1   Change in internal energy (used in cases where the specifics of beginning and ending internal energies are irrelevant)Q  Ã‚  heat  transferred into (Q   0) or out of (Q   0) the systemW  Ã‚  work  performed by the system (W   0) or on the system (W   0). This yields a mathematical representation of the first law which proves very useful and can be rewritten in a couple of useful ways: The analysis of a  thermodynamic process, at least within a physics classroom situation, generally involves analyzing a situation where one of these quantities is either 0 or at least controllable in a reasonable manner. For example, in an  adiabatic process, the heat transfer (Q) is equal to 0 while in an  isochoric process  the work (W) is equal to 0. The First Law Conservation of Energy The  first law  of thermodynamics is seen by many as the foundation of the concept of conservation of energy. It basically says that the energy that goes into a system cannot be lost along the way, but has to be used to do something ... in this case, either  change  internal energy or perform work. Taken in this view, the first law of thermodynamics is one of the most far-reaching scientific concepts ever discovered. The Second Law of Thermodynamics Second Law of Thermodynamics:The second law of thermodynamics is formulated in many ways, as will be addressed shortly, but is basically a law which - unlike most other laws in physics - deals not with how to do something, but rather deals entirely with placing a restriction on what can be done. It is a law that says nature constrains us from getting certain kinds of outcomes without putting a lot of work into it, and as such is also closely tied to the  concept of the conservation of energy, much as the first law of thermodynamics is. In practical applications, this law means that any  heat engine  or similar device based  on  the principles of thermodynamics cannot, even in theory, be 100% efficient. This principle was first illuminated by the French physicist and engineer Sadi Carnot, as he developed his  Carnot cycle  engine in 1824, and was later formalized  as a law of thermodynamics  by German physicist Rudolf Clausius. Entropy and the Second Law of Thermodynamics The second law of thermodynamics is perhaps the most popular outside of the realm of  physics because it is closely related to the concept of  entropy or the disorder created during a thermodynamic process. Reformulated as a statement regarding entropy, the second law reads: In any closed system, in other words, each time a system goes through a thermodynamic process, the system can never completely return to precisely the same state it was in before. This is one definition used for the  arrow of  time since entropy of the universe will always increase over time according to the second law of thermodynamics. Other Second Law Formulations A cyclic transformation whose only final result is to transform heat extracted from a source which is at the same temperature throughout into work is impossible. - Scottish physicist William Thompson ( A cyclic transformation whose only final result is to transfer heat from a body at a given temperature to a body at a higher temperature is impossible. - German physicist Rudolf Clausius All the above formulations of the Second Law of Thermodynamics are equivalent statements of the same fundamental principle. The Third Law of Thermodynamics The third law of thermodynamics is essentially a statement about the ability to create an  absolute  temperature scale, for which  absolute zero  is the point at which the internal energy of a solid is precisely 0. Various sources show the following three potential formulations of the  third law  of thermodynamics: It is impossible to reduce any system to absolute zero in a finite series of operations.The entropy of a perfect crystal of an element in its most stable form tends to zero as the temperature approaches  absolute zero.As temperature approaches absolute zero, the entropy of a system approaches a constant What the Third Law Means The third law means a few things, and again all of these formulations result in the same outcome depending upon how much you take into account: Formulation 3 contains the least restraints, merely stating that entropy goes to a constant. In fact, this constant is zero entropy (as stated in formulation 2). However, due to quantum constraints on any physical system, it will collapse into its lowest quantum state but never be able to perfectly reduce to 0 entropy, therefore it is impossible to reduce a physical system to absolute zero in a finite number of steps (which yields us formulation 1).

The Price Of Tuition Should Not Be Paid - 1462 Words

There are a lot of concerns when it comes to college. Among these concerns are the price of tuition and how unbearably high it is. Because of how high the cost is, people are starting to question the worth of a college degree. This topic is widely debated throughout the country and until the price of tuition has been made more affordable the debate will linger. However it is easy to get lost in the debate and begin to think that even if the cost were to be lowered that a college degree would not be worth the time to earn.. College may not be for everyone, but our community prospers from having well educated individuals. Society benefits from education much more than we realize. Not only that, but statistically college educated people are more successful than those without a degree. And while it may be hard to afford the high tuition costs there are ways to maintain the cost and make it easier to afford. This is why a college degree is worth the trip. To begin the argument it should b e known that society benefits from college educated individuals. One aspect of college that is repeatedly overlooked is how it can shape one’s mind and allows them to think in entirely new ways not only critically but creatively as well. In fact, according to a report issued by the College Board in 2007 states that â€Å"those with a bachelor’s degree, are more likely to volunteer, vote, exercise, and have health insurance and pensions.† (Lewin 18) These are all qualities that make a human beingShow MoreRelatedAffordability Of Our Education : Is A College Education Worth The Cost?1729 Words   |  7 PagesSylvia Ikharo Comp 1101 March 15, 2016 Affordability of our Education Every working American family knows how hard it is today to find affordable higher education. As of the past few decades the tuition fee for most public and private colleges increased by 250 percent while income increased by 16 percent (Politico, 2013). The statistics have since then become a trend that has now evolved each year, hence; making it difficult for parents to send their children to school that can cause themRead MoreThe Cost of Tuition Among Colleges and Universities in Highly Diversified and Indefinite926 Words   |  4 PagesThe cost of tuition among colleges and universities is highly diversified and indefinite. Students shouldn’t be financial problems that are associated with the high tuition cost for their education because it creates unnecessary stress and financial problems. The student’s primary concern should be their academic performance and learning. The tuition fee includes extracurricular expenses such as lifestyle amenities that may not be essential toward the student education yet they are still being chargedRead MoreThe Success Of A College Student898 Words   |  4 Pagesencourages, and emphasizes higher education. Tuition and fees, loans, and extra expenses become a big price to pay for wanting to play the proper role in society as a student looking for a better future. Today’s college students have to deal with a huge financial decision at a very young age that leads to frustration and confusion which is caused by the inflating prices of college tuition. As decades have passed, it is clear that the cost of college tuition has gone up significantly compared to thirtyRead MoreThe True Cost Of Education Essay1514 Words   |  7 Pagesage, we are taught that school is the number one choice. Education is the tool that will determine one’s future, and ultimately deciding how much money one will make. But, the cost for one’s future is increasing. According to College Board, college tuition has been skyrocketing. Presently, the average cost of attending private colleges is $47,405; whereas, in-state schools cost $9,410 and public universities cost $23,893 (Cohen). The cost may vary by where a student attends, and the cost is drasticallyRead MoreMoney For The Future : College955 Words   |  4 Pagesits prices are alarming, leaving students with little ways to pay for it, in the dust. The unfortunate reality of students dealing with debt is a fear-mongering tactic used so that students sike themselves out and never attend college. This harsh reality applies to many students who have to pay for their college expenses out of pocket, unlike the lucky few who attend accredited four-year colleges with the money of their financially stable parents. According to the essay Is College Tuition a SoundRead MoreShould College Tuition Be Based on Major917 Words   |  4 PagesCollege Tuition Every year, students wishing to attend college are faced with the steep price that comes with their prospective education. For many, the belief that it will play dividends in the long run is enough reason to pay the high price. However, college majors have a wide variance of starting median salaries, which leads to the question of whether or not tuition should be based on your field of study. Students knowing they will be making less than another student after graduating should notRead MoreDriving The Cost Of Higher Education1063 Words   |  5 PagesStatistics included college tuition in the Consumer Price Index (CPI), the price of attending college has risen by more than a factor of six in the 25 years that followed. However, this price increase should be measured not on absolute cost, but on relative market cost; i.e., the price increase relative to the CPI. Examining this, we still find that college tuition is rising faster than almost every other market sector. The following g raph shows the change in tuition cost, the change in overall CPIRead MoreCollege Is Not For All But The Rich846 Words   |  4 PagesUnaffordable for All but the Rich,† she mentions the average price of college tuition for different types of colleges. She begins with the type of colleges, from community college to instate, public to nonprofit, and private colleges. Baum speaks about the â€Å"sticker† price - as in the price that is advertised on how much the school s full tuition will cost. She then goes on to say that majority of people don t even pay the sticker price because of scholarships and other financial assistance - loansRead MoreFinancial Aid : Scholarships Or Any Other Helpful Programs That May Be Affordable1014 Words   |  5 Pageshow well colleges do their jobs. With every single dime college students are paying for their tuition, you will more likely think they will get a major education and be able to find a job after graduation but it s not always the case. Colleges are more focused about getting teens to come to their school and yes they are providing them with a valuable education. Colleges are starting to use college tuition to upgrade their school, instead of providing high well experienced teachers. Instead they areRead MoreGraduation Speech : College And Pursue A College Degree1383 Words   |  6 Pagesand leaves a very large number of students leaving college with a lot of debt. Student debt is something that often times is being paid off for most of their life. Some people see this as a problem and other see it as a system that is working but with issues. After the recent 2016 presidential election, some candidates and former president Obama thinks that there should be a form of free education. Knowledge is power, and going to college and getting a degree allows you to become a more educated

Middle-Class Homelessness in America free essay sample

Can you imagine yourself standing in line in hope for a cot at a shelter to share with your family, or waiting for a warm meal in a soup kitchen? This is what many middle-class American citizens have succumbed to. Has the American dream been lost, has the middle-class lost its position in the American economy, and has the inequality of income cause the demise of the middle-class? By focusing on the health care reform and record low unemployment rate we overlook the underlying problem; the dwindling middle-class, the backbone of our country. Many studies have been conducted to define middle-class without much success. It has been attempted to relate it to annual income. One study states that yearly incomes between $32,900 and $64,000, another between $50,800 and $122,000, and the U. S. census bureau middle 60% of incomes is the largest range of all lies between$ 20600, and $102,000 as what defines middle-class. Dan Horn notes in the Cincinnati Enquirer â€Å"Psychologist Ken Eisold, a contributor to Psychology today, said, though, that the way people describe their social status has more to do with what’s going on in their heads than their wallets. We will write a custom essay sample on Middle-Class Homelessness in America or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page † Eisold goes on to say that â€Å"it’s really more about identity†. Horn adds that Julie Heath, director of the University of Cincinnati’s Economics Center agrees with Eisold that saying, â€Å"We’re a middle-class family has more than a financial connotations to it, it has a salt-of the earth to it. That’s the bed rock. Essentially this shows that Americans do not base their social status on their income alone, but also on their personal accomplishments and views of where they have come from and where they are going. That being said, the bed rock of the middle-class comes from one of the most common descriptions what living in America is all about; the great American Dream. History tells us that this emotion connected with being middle-class started showing up in the 1830’s. In these times people came to America hoping for the best, and they clung to ideas of how they would make it. They believed that if those ideas and values were kept, that they were middle-class, even if they were not financially. This is how the idea of the Leave it to Beaver life style came into being. In the 1950’s men took white collar jobs while women stayed home and maintained their house and families. They bought homes in the suburbs, nice family cars, and made safe investments. This provided them a sense of stability and many believed this is what the American dream is all about. Today, in pursuit of the dream, to maintain their middle-class status many Americans have higher incomes than their parents did but both parents are working. Yet while doing the best that they that they can possibly do, many are watching their dreams shatter. Erin Currier, director of the Pew Economic Mobility Project, said â€Å"stability is one of the biggest threats to the middle class today. † She goes on to say, â€Å"Though born into middle-class, many fall out by adulthood. † This is due to inflation of basic needs such as health care, day care, college funding, and the rise of the inequality of income. One term often referred to when relating to the middle-class crisis is Income Gap. As defined on the internet by investapedia. om, the income gap is the unequal distribution of household and individual income across the various participants in an economy. A sociology and political science professor at the University of Arizona who studies income inequality and poverty, says that over the past three decades â€Å"is slow income growth compared to general economic growth†¦ a bigger and bigger portion of economic growth has occurred to the wealthiest 1 %, whether the measure is basic wages or total compensation,† says Lane Kenworthy. (CQ researcher 3) There is political risk involved with this shift that is greater than economics and family finances. A large middle class, especially one that is politically active, tends to be a kind of anchor that keeps our country from swinging back and forth. There are typical values that middle-class families acquire and pass on to their children and those values tend to be good for democracy,† states Teresa Sullivan, provost and executive vice president for academic affairs at the University of Michigan, and the co-author of The Fragile Middle Class: Americans in Debt. (CQ Researche r 2) The new millennium looked very hopeful for the war on poverty in America. The federal poverty rate was the lowest it had been since 1974 according to CQ Researcher. The next 4 years even better with Housing prices doubling in many cities and increase in home equity loans that brought the Home-ownership rate up to an all time high of 69 percent. In 2008 we would not only see the sand shift out from the false growth of the economy led by the banks and lending companies but our government bail the banks out with $700 billion rescue bill, They did not however bail out the borrower and many lost their homes. Leading to the current middle class crisis. These issues, the rise of the inequality of income and the shattering of the American dream, have led us to the downfall of the middle class. In more recent years the middle-class are finding themselves not only having a decrease in their income due to layoffs and downsizing, but while not able to maintain their dream are losing their homes due to foreclosures. They are now finding themselves sleeping in their cars, if fortunate to still have one. They are waiting in lines for food and shelter, and bathing in gas station rest rooms, standing on street corners and highway exit’s begging for money or work. I have a personal interest in this research because I consider myself a middleclass American who lived through these years of the housing crisis and recession, I have lost a business, I am dealing with the short sale of my home and a threat of foreclosure, I have suffered through divorce and currently I am a struggling single mother. In conclusion the decline of the middle-class has hit very close to home. Although the hope of the American dream dies a slow death in my own heart, because of the continual economic status and burden of the cost of living rising, many like me are losing hope.

The Year 509 BC Rome Finally Became A Republic And Thus Started The Ro

The year 509 BC Rome finally became a Republic and thus started the Roman empire. As Rome rose to power they went through many wars and many conflicts between the plebeians and patricians. The republic was made out of 3 groups, the consuls which were 2 men elected from the senate, the senate which was made of 300 patricians, and the assembly made from plebeians. Many years later Rome started to reject the republic when it went into a series of civil wars. 3 men form the first triumvirate, Julius Caesar, Pompeii, and Crassus. Julius Caesar became the victor. He was then rewarded dictator for life. On the date September 23, 63 BC a boy was born. He was originally Caesar's grand-nephew. This boy would later grow to a power and change Rome for good. Julius Caesar had become dictator for life. 2 years later he was assassinated by members of the senate. A young boy named Octavian, was 18 years old. Octavian was Caesar's grand-nephew but Octavian had always hoped Caesar would take him as a son. Octavian knew of everything that Caesar had done. From conquering Gaul to when he crossed the Rublican with his army, and also when he defeated his enemies and became the most powerful man in Rome. At the age of 14 Octavian had finally met his great-uncle and hero when he came back from Asia Minor and said the 3 famous words that summed up his victory, "Veni, Vidi, Vici." Latin for "I came, I saw, I conquered" In Caesar's will, Octavian's dream had finally come true. Caesar had adopted him as his son. In Caesar's will he left his money to a man named Marc Anthony. He was a powerful general at the time. He was a consul of Rome and successor to Caesar. Octavian knew he couldn't just get the money from Anthony. Octavian had no military experien ce or political experience. But he was now Julius Caesar's son. As Rome once again fell into devastation, they needed someone who could pull Rome back together and take control. This led to the second triumvirate. The three men who were running in this were Lepidus, Octavian, and Marc Anthony. After Lepidus retired from running for dictator, it left only Octavian and Marc Anthony. As Marc Anthony and Cleopatra set out to take the throne in Rome, they went to western Rome in Asia Minor to win battles. Anthony won the battle of Armenia but soon after returned to Alexandria instead of Rome. When People had wondered why he had done this Octavian said to the senate "Anthony intends to make Alexandria, instead of Rome, the capital of the Roman empire. Anthony is bewitched by Cleopatra. Has he not bestowed upon her provinces which belong to you, as Romans? Has he not deserted Octavia, his faithful wife, for that accursed female (Foster 114)?" Anthony started moving his Egyptian fleet and 200 ships toward a city called Actium. Octavian had a fleet off 40 0 ships waiting for him, and Octavian soon won the battle. Anthony had heard that Cleopatra had killed herself, and without thought he killed himself so he could be with her. Cleopatra though, wasn't dead. She came back home to visit Anthony's tomb. She then went to her own tomb and poisoned herself. Octavian now stood alone, one ruler who now controlled all of Rome and now a new Roman province, Egypt. Octavian now was ruler of Rome. Since he was Julius Caesar's adopted son, in January, 27 BC the senate changed his name from Octavian to Augustus Caesar. From this point on, Pax Romana had begun. Pax Romana is Latin for Rome in peace. Peace was finally restored in Rome, And Augustus was the imperator. Imperator later became know as emperor. Augustus was the first emperor of Rome. The first thing Augustus did to restore peace was present to Rome a new constitution. This constitution "transferred the State to the free disposal of the Senate and people ("Augustus" 370)." There were still several civil wars but definitely not as many as before. He had many military operations continuing in many frontier areas. By the year 25 BC rebellious Alpine tribes were defeated and destroyed. In

Free Essays on The Cost Of Educating The Next Generation

We live in a society where a college degree has become the single most important determinant of a young person’s chances of success. Yet with rising college tuition costs showing no signs of slowing down, it is increasingly difficult for low income students to achieve their higher education goals. A college education is viewed as the ticket to prosperity, a way to rise up out of poverty and live a wealthy life. â€Å"After all, education is the great equalizer in our nation. It can bridge social, economic, racial, and geographic divides like no other force. It can mean the difference between an open door and a dead end. And nowhere is this truer than in higher education† (Boehner). However, the rising cost of college tuition hinders lower income families from sending their children to college. With success being more directly linked than ever to knowledge, a college degree is of immeasurable importance. By these poorer students not being able to attend college, a cap is being put on the intergenerational progress of low income families. Cost factors prevent forty eight percent of college-qualified high school graduates from attending a four-year institution, and twenty two percent from attending any college at all. At this rate, by the end of the decade, more than two million college-qualified students will be completely denied the opportunity for a postsecondary education (Boehner). We are facing a crisis in the higher education system. As America grows even more into a knowledge economy, many students are facing fees that they and their families are unable to pay. Students are having to either give up their dream of a college degree, or â€Å"trade down† to a more affordable means of postsecondary education. Even more, now a basic education has expanded to include six additional years. This means that the public portion of a basic education has shrunk from covering one hundred percent of k-12 in the early 1970’s to t... Free Essays on The Cost Of Educating The Next Generation Free Essays on The Cost Of Educating The Next Generation We live in a society where a college degree has become the single most important determinant of a young person’s chances of success. Yet with rising college tuition costs showing no signs of slowing down, it is increasingly difficult for low income students to achieve their higher education goals. A college education is viewed as the ticket to prosperity, a way to rise up out of poverty and live a wealthy life. â€Å"After all, education is the great equalizer in our nation. It can bridge social, economic, racial, and geographic divides like no other force. It can mean the difference between an open door and a dead end. And nowhere is this truer than in higher education† (Boehner). However, the rising cost of college tuition hinders lower income families from sending their children to college. With success being more directly linked than ever to knowledge, a college degree is of immeasurable importance. By these poorer students not being able to attend college, a cap is being put on the intergenerational progress of low income families. Cost factors prevent forty eight percent of college-qualified high school graduates from attending a four-year institution, and twenty two percent from attending any college at all. At this rate, by the end of the decade, more than two million college-qualified students will be completely denied the opportunity for a postsecondary education (Boehner). We are facing a crisis in the higher education system. As America grows even more into a knowledge economy, many students are facing fees that they and their families are unable to pay. Students are having to either give up their dream of a college degree, or â€Å"trade down† to a more affordable means of postsecondary education. Even more, now a basic education has expanded to include six additional years. This means that the public portion of a basic education has shrunk from covering one hundred percent of k-12 in the early 1970’s to t...

Executive Action Versus Presidential Orders

Executive Action Versus Presidential Orders The use of executive actions by the president of the United States came under intense scrutiny during Barack Obamas two terms in office. But many critics misunderstood the definition of executive actions and the difference with legally binding executive orders.   Obama issued  dozens of executive actions designed to prevent gun violence in January 2016, fulfilling one of his primary agenda items. Many of the media reports mistakenly described the policy proposals as official executive orders, which are legally binding directives from the president to federal administrative agencies. The Obama administration, however, described the proposals as executive actions. And those executive actions- ranging from universal background checks on anyone trying to buy guns, restoring a ban on military-style assault weapons, and cracking down on straw purchases of guns by people whose intention is to resell them to criminals- carried none of the weight executive orders carry. The following explains what executive actions are and how they compare to executive orders. Executive Actions Versus Executive Orders Executive actions are any informal proposals or moves by the president. The term executive action itself is vague and can be used to describe almost anything the president calls on Congress or his administration to do. But many  executive actions carry no legal weight. Those that do actually set policy can be invalidated by the courts or undone by legislation passed by Congress. The terms executive action and executive order are not interchangeable. Executive orders are legally binding and published in the Federal Register, though they also can be reversed by the courts and Congress. A good way to think of executive actions is a wish list of policies the president would like to see enacted. When Executive Actions Are Used Instead of Executive Orders Presidents favor the use of nonbinding executive actions when the issue is controversial or sensitive. For example, Obama carefully weighed his use of executive actions on gun violence and decided against issuing legal mandates via executive orders, which would have gone against the legislative intent of Congress and risked enraging lawmakers of both parties. Executive Actions Versus Executive Memoranda Executive actions are also different from executive memoranda. Executive memoranda are similar to executive orders in that they carry legal weight  allowing the president to direct government officials and agencies. But executive memoranda are typically not published in the Federal Register unless the president determines the rules have general applicability and legal effect. Use of Executive Actions by Other Presidents Obama was the first modern president to use executive actions in lieu of executive orders or executive memoranda. Criticism of Executive Actions Critics described Obamas use of executive actions as an overreach of his presidential powers and an unconstitutional attempt to bypass the legislative branch of government, even though the most substantial of the executive actions carried no legal weight. Some conservatives described Obama as a dictator or tyrant and said he was acting imperial. U.S. Sen. Marco Rubio, a Republican from Florida who was a  presidential candidate in the 2016 election, said Obama was abusing his power by imposing his policies via executive fiat instead of allowing them to be debated in Congress. Republican National Committee Chairman and former White House Chief of Staff for President Donald Trump, Reince Priebus, called Obamas use of executive actions as an executive power grab. Said Priebus: He paid lip service to our fundamental constitutional rights, but took actions that disregard the 2nd Amendment and the legislative process. Representative government is meant to give voice to the people; President Obama’s unilateral executive action ignores this principle. But even the Obama White House acknowledged that most of the executive actions carried no legal weight. Heres what the administration said at the time the 23 executive actions were proposed: While President Obama will sign 23 Executive Actions today that will help keep our kids safe, he was clear that he cannot and should not act alone: The most important changes depend on Congressional action.

Semantic Web and Implications Essay Example | Topics and Well Written Essays - 1000 words

Semantic Web and Implications - Essay Example This paper stresses that you would also like to know how long the respective shops are open that day, hence, you start surfing the various websites of dealers and compile gathered information in a list. Although, the websites of the various dealers are designed very differently, it is still easy to gain information such as at the opening times of a branch. Gathering the list is a bit cumbersome, but an intellectually easy task to be accomplished. It is difficult to automatically retrieve content from various web shops, such as information like sales price are all formatted differently and embedded in different places. The Semantic Web helps to unify this complicated data in the background, without changing the layout. According to the discussion Semantic Web Semantic Web is the extension of current web which is better at enabling the computers and individuals to work in cooperation. User locates the information on the internet with the help of two main tools, search engines and catalogues. Catalogues were designed by humans who were accurate in terms of results but search engines were designed to elsewhere. Search engine skims the internet websites and searches for changed pages and mechanisms of indexing. The catalogues store the information on the basis of the usage of the words. The inability to comprehend the words and identify the relationship while searching for query is the drawback identified in search engines due to which semantic web is taking place. Anyone who enters the phrase sequence "Sales for Siemens in Germany in 2005" into a search engine receives all possible outcomes. However, no accurate answers are ever retrieved. Be it Altavista, Yahoo or Google - no search engine today is a ble to "understand" such a query. Search robots react to hidden tags on websites called metadata. If they do not properly classify it comes to "irrelevant results" or to a "too large outcome space†. Dissatisfied users complain about search engines, according to market research firm Jupiter Research, "Dr. Know", the all-knowing oracle of Steven Spielberg's "AI (Artificial Intelligence)", today's world of search is still far away. In the science fiction film, the protagonists asked a question, and if "Dr. Know" did not have an answer right, they simply asked again and marginalized by the context of the question further and further. Semantic technologies allowed computers to process the content of music, images and videos in a better way. Semantically means that content does not only have a meaning, but is also related to other meanings, thus forming hierarchical classes. Future of Semantic Web and Challenges The concept is regarded as an impractical concept presented by the Web Specialists.