Founding fathers Essay Example for Free

Founding fathers Essay This paper seeks to explore whether America’s founding fathers were men of character and people who were not driven by personal political ambition. Some of the fathers examined in the study include Alexander Hamilton, Aaron Burr, Thomas Jefferson, Benjamin Franklin, George Washington, John Adams and James Madison (Ellis, 1- 2). Character can be looked at as the personal traits that are attributed to an individual and which guides his intentions. A man of character is that person who lives by principles and motives that are virtuous and desired by the people he is dealing with. These principles and motives should also be acceptable according to the ethical standards set by the society. Personal ambition is when a person sets and focuses on achieving targets which are aimed at individual satisfaction. One is said to be driven by personal ambition if these targets are the motivating factors behind his actions. In the book Founding Brothers by Joseph J. Ellis, the founding fathers were politicians who pursued great ambitions through various avenues. The political rivalry, pride, jealousy and personal ambition however drove them into doing things that do not qualify all of them to be called men of character (Ellis, 10, 16, 23). Nonetheless, most of their activities yielded personal political gratification as well as contributing in some way to the creating of America as a nation. According to Ellis (75), it is due to selfishness and personal interest that the then former secretary of the treasury Alexander Hamilton and sitting Vice president Aaron Burr ended up in a duel that turned out to be fatal as Burr fired a deadly short that killed Alexander. The two men who were on both sides of the political divide: Democratic Republican vs. Federalists allowed their hatred to take charge of their thoughts. Alexander did not like Burr because the later captured a Senate seat from Philip Schuyler who happened to be Hamiltons father-in-law (Ellis, 172). A man of character at this point would have accepted defeat and allowed democracy to prevail. In addition, Hamilton comes out as a nepotist who placed personal ambition before the interest of the nation for finding it had to accept that Burr defeated his relative Philip Schuyler. The â€Å"despicable opinion† expressed by Alexander against Burr which triggered the argument ending in the duel depicts him as a man who lacked character (Ellis, 113,140). A man of character uses his words wisely in away that does not harm the feelings of his audience but communicates the needed information. Instead of pushing Aaron Burr further in the New York Gubernatorial election by endorsing a candidate who ended up beating Burr and widening their differences, a man of character would have swallowed pride, buried their differences and offered his support or remained neutral to reconcile their differences ( Ellis, 160). This is because men of character appreciate differences of opinion and not taking things personal. However, Hamilton manifested good character by intentionally wasting his bullet and keeping his pre-duel promise by not shooting Burr. The spirited push for the establishment of permanent national capital along the Potomac River was a great fiscal policy that credits him with fighting for the welfare of the nation and not his personal political ambition. His support for Jefferson against Burr due to the latter’s ill intention shows his concern for the nation. According to Ellis (194) we can say with profound confidence that Aaron Burr was not a man of character based on his murder of Hamilton and treason accusation. He comes out as an arrogant man capable of doing anything to acquire power and retain power. Hunger for power is a vice that is not associated with men of character. Even after loosing his Vice-presidency in an election, he was still driven by personal political ambition to the extent of wanting to betray his own nation. This is evident in his conspiracy to steal Louisiana Purchase lands away from the United States and crown himself a King or Emperor (Ellis, 201) Before his election to presidency, Thomas Jefferson and James Adams forged a relationship that contributed immensely to the American nation. It is this good rapport that prompted Hamilton to prefer his candidacy to that of Burr. In spite of all these, his rebellion and disregard of other leaders for not working his way does not reflect his good character but he comes out as a person who prefers things to work out in his way. This can be illustrated by his opposition to George Washington’s policies which were regarded by many as being in the interest of the nation (Ellis, 240). He was also angered by John Adam’s win for presidency which made him to refuse Adam’s attempt to incorporate him into the cabinet. As a man of good character, he should have accepted the gratitude and acknowledgement extended by his friend to serve in the cabinet. This incident also shows that he allowed his personal political ambition to supersede the interest of the nation by refusing to serve in the cabinet. His acts of character assassination on John Adam reveal his hate and unethical conduct (Ellis, 343). However, Adam’s reaction warrants his consideration as a good man who was just trying to help the nation. From his policies and politics, Washington can be considered as a respectable politician who went beyond his personal political ambition to serve the nation. For instance, through the promotion of national unity and highlighting the danger of partisanship and party politics (Ellis, 256). On the issue of slave trade, all of these leaders stand accused especially Madison as a man who lacked character by promoting this form of oppression to develop their nation except Benjamin Franklin who spoke out against it while championing freedom for all (Ellis, 317) Conclusion. Looking at the early political days of the founding fathers, we can conclude that some of them had their personal political ambition that tarnished their good character while others maintained their ethical standards and respect while serving the nation. For instance, controlled by personal political ambition, Thomas Jefferson engaged in activities that eroded his character as a good man. This trend however changed in old age as he tried to repair his faults including reconciling with John Adams (Ellis, 406). From the above discussions, I can conclude that not all founding fathers were men of character who were not driven by personal political ambition. Work Cited Joseph J. Ellis (2001). Founding Brothers. New York: Wheeler Pub Inc.

Cloning is Bad! :: essays research papers

   Ã‚  Ã‚  Ã‚  Ã‚  The coelacanth is an amazing creature full of mystery and exciting discoveries. It was once thought to be extinct for more than360 milllion years ago until one was caught in1938.Its scientific name is Latimeria chalumnae .An adult coelacanth can grow at least to 180 cm in length and weigh 98 kg and each fish has a distinctive pattern of pinkish white blotches that enables scientists to separate one individual from another. The coelacanth has several very recognizable anatomical features.The skull is in two parts with an intra cranial joint which lets it go an up and down movement between them. A strong pair of muscles beneath the skull-base lowers the front half of the skull, giving the coelacanth a powerful bite .The eyes and olfactory organs are in the front part of the skull, and tiny brain and inner ear are in the rear.In the middle of the snout is a large pit filled with a jelly-like sac that opens to the outside through three pores.This sac is called the rostral organ .It may be used to detect weak electric currents and help the coelacanth to find hidden prey. The fins Coelacanths belong to a group of bony lobe-finned fishes and have 8 fins (2 dorsals, 2 pectorals, 2 pelvics, 1 anal and 1 caudal). The first dorsal fin of the coelacanth is much like that of other fishes and can be folded down or erected. The other fins have a well-developed, muscular, limb-like basal lobe projecting from the body wall, and a fringe of unbranched rays like a fan attached to the outer end of the base. The fleshy scale - covered lobe can be bent or rotated so that each fin can work like a paddle or sculling oar. The tailhas three divisions: a characteristic small projecting middle lobe between the longer upper and lower lobes of the fin. The skeleton Most of the skeleton is made of cartilage. In place of the vertebral column, a large notochord extends from the skull to the tip of the caudal fin. The notochord is a thick-walled cartilaginous tube filled with oil-like fluid which is under slight pressure; it is tough and elastic and does the job of a backbone, since no complete vertebrae are developed around it. The scales The body is covered with hard scales with small toothy-like growths called denticles on the outer surface which protect the coelacanth from the rocks and predators. The swimbladder

HVDC Light Technology Essay

Abstract—This document reveals theHVDC Light DC transmission technology.It is used in underground transmission and moreover provides point to point transmission.HVDC Light requires only two elements namely a converter station and a pair of ground cables. The new HVDC Light cable is an extruded, single-pole cable. It is ideally suited for feeding power into growing metropolitan areas from a suburban substation. HVDC Light is inherent environmentally friendly cables instead of OH transmission lines. Virtually no magnetic field. The environmental gains would be substantial, since the power supplied via the DC cables will be transmitted from efficient power plants in the main AC grid. 1. INTRODUCTION A hundred years ago, the transformer and a new transmission and distributionbe controlled precisely and independentlycan replace overhead lines at no costcontrol capabilities that are not present oreconomically feasible to connect smallscale,Equally important, HVDC Light hasfor inefficient, polluting local generationfrequency, active and reactive power canislands, mining districts and drillingloads from a main AC-gridof each other. This technology also relieson a new type of underground cable which penalty platforms can be supplied with power frompossible even in the most sophisticated ACrenewable power generation. Renewable power generation plantssuch as diesel units. The voltage, . Connect small scale Feeding remote isolated Flexible transmission System technology, HVDC Light, makes it the main grid,thereby eliminating the needto the main AC grid. Vice versa,using thevery same technology, remote locations asthe three phase system made it possible totransmit AC power efficiently and economically over vast distances and todistributethe power toamultitude ofusers.Since then all aspects of transmission anddistribution have developed by means oftechnical improvement and evolution. This AC transmission and distributiontechnology has made it possible to locategeneratingplants in optimum locations, andtoutilize them efficiently. This has alsoresulted in great environmental gains.Thermal plants have been located wherethey can be supplied with fuel through anefficient transportation system, therebyreducing waste and pollution. Hydro plantshave been located where the hydroresources can be used at the greatestadvantage. And large generating plantshave meant fewer overhead lines than amultitude of smaller generating plantswould have required.However, today’s AC transmission anddistribution systems are, at least inprinciple, based on ideas that haven’tchanged much since a hundred years ago. To transmit power, step up the voltage withtransformers, transmit power, step downthe voltage and distribute power. Despitetheir proven advantages, it is difficult andexpensive to adapt AC transmission anddistribution systems to the numerous smallscalegenerating plants that are being built,or to the increasingly complex and variableproduction and load demands.Environmental concerns and regulationsalso put heavy restrictions on building right-of-ways and on small-scale, fossilfuelledgenerating plants, such as dieselgenerating plants.These new trends require networks that areflexible. The networks must be able to copewith large variations in load and frequentchanges in productions patterns with tougher environmental regulations.Also, in such flexible networks, the powerflow and the voltages require precisecontrol in order to make the grids stable and economic. 2. TECHNOLOGY As its name implies, HVDC Light is a DCtransmission technology. However, it isdifferent from the classic HVDCtechnology used in a large number oftransmission schemes. Classic HVDCtechnology is mostly used for large point-to-point transmissions, often over vastdistances across land or under water. It requires fast communications channelsbetween the two stations, and there mustbe large rotating units – generators orsynchronous condensers – present in theAC networks at both ends of thetransmission. HVDC Light consists of only two elements: a converter station and a pair ofground cables. The converters are voltagesource converters, VSC’s. The output from the VSCare determined by the controlsystem, which does not require anycommunications links between the differentconverter stations. Also, they don’t need torely on the AC network’s ability to keepthe voltage and frequency stable. Thesefeatures make it possible to connect theconverters to the points bests suited for theAC system as a whole. Power range up to 100 MW Independent control of active and reactive power Can feed power to AC network without ownGeneration DC The converter station is designed for apower range of 1-100 MW and for a DCvoltage in the 10-100 kV range. One suchstation occupies an area of less than 250sq. m. (2 700 sq. ft.), and consists ofjust a few elements: two containers for theconverters and the control system, threesmall AC air-core reactors, a simpleharmonics filter and some cooling fans. 20MW:18x12m The converters are using a set of six valves,two for each phase, equipped with highpowertransistors, IGBT (Insulated GateBipolar Transistor). The valves arecontrolled by a computerized controlsystem by pulse width modulation, PWM.Since the IGBTs can be switched on or off, the output voltages and currents onthe AC side can be controlled precisely.The control system automatically adjuststhe voltage, frequency and flow of activeand reactive power according to the needsof the AC system.The PWM technology has been tried andtested for two decades in switched powersupplies for electronic equipment ascomputers. Due to the new, high powerIGBTs, the PWM technology can now beused for high power applications as electricpower transmission.HVDC Light can be used with regularoverhead transmission lines, but it reachesits full potential when used with a new kindof DC cable. The new HVDC Light cable isan extruded, single-pole cable. As anexample a pair of cables with a conductorof 95 sq mm aluminum can carry a load of30 MW at a DC voltage of +/-100KV.Handling the cable is easy. Despite its large power-carrying capacityit has a specific weight of just over 1 kg/m.Contrary to the case with AC transmission;distance is not the factor that determinesthe line voltage. The only limit is the costof the line losses, which may be lowered bychoosing a cable with a conductor with alarger cross section. Thus, the cost of apair of DC cables is linear with distance. Insulation: 5.5 mm triple extruded Screen: Copper wire Sheath: HDPE Weight: 1.05 kg/m Voltage: > 100 kV DC Current: > 300 A Power: > 30 MW Conductor: 95 mm^2Aluminum A DC cable connection could be more costefficientthan even a medium distance ACoverhead line, or local generating unitssuch as diesel generators.The converter stations can be used indifferent grid configurations. A singlestation can connect a DC load or generatingunit, such as a photo-voltaic power plant,with an AC grid. Two converter stationsand a pair of cables make a point-to pointDC transmission with AC connections ateach end. Three or more converter stationsmake up a DC grid that can be connected toone or more points in the AC grid or todifferent AC grids. An HVDCLight network can be configured radial or meshed,like any network. The DC grids can be radial with multi-dropconverters, meshed or a combination ofboth. In other words, they can beconfigured, changed and expanded in muchthe same way AC grids are. 3. APPLICATIONS 3.1 OVERHEAD LINES In general, it is getting increasingly difficultto build overhead lines. Overhead lineschange the landscape, and the constructionof new lines is often met by public resentment and political resistance. Peopleare often concerned about the possiblehealth hazards of living close to overheadlines. In addition, a right-of-way for a high voltage line occupant valuable land. Theprocess of obtaining permissions forbuilding new overhead lines is alsobecoming time-consuming and expensive.Laying an underground cable is a mucheasier process than building an overheadline. A cable doesn’t change the landscapeand it doesn’t need a wide right-of-way.Cables are rarely met with any publicopposition, and the electromagnetic fieldfrom a DC cable pair is very low, and also astatic field. Usually, the process ofobtaining the rights for laying anunderground cable is much easier, quickerand cheaper than for an overhead line.A pair of HVDC Light cables can beplowed into the ground. Despite their largepower capacity, they can be put in placewith the same equipment as ordinary, AChigh voltage distribution cables. Thus,HVDC Light is ideally suited for feedingpower into growing metropolitan areasfrom a suburban substation. 3.2 REPLACING LOCAL GENERATION Remote locations often need localgeneration if they are situated far awayfrom an AC grid. The distance to the gridmakes it technically or economicallyunfeasible to connect the area to the maingrid. Such remote locations may be islands,mining areas, gas and oil fields or drillingplatforms. Sometimes the local generators use gas turbines, but diesel generators aremuch more common.An HVDC Light cable connection could bea better choice than building a local powerplant based on fossil fuels. Theenvironmental gains would be substantial,since the power supplied via the DC cableswill be transmitted from efficient powerplants in the main AC grid. Also, thepollution and noise produced when thediesel fuel is transported will be completelyeliminated by an HVDC line, as the needfor frequent maintenance of the diesels.Since the cost of building an HVDC Lightline is a linear function of the distance, abreak-even might be reached for as shortdistances as 50- 60 km. HVDC Light lowest cost AC + Overhead line HVDC Light + cable Cost inside AC grid Distance from the AC grid eliminate local diesel Cost/kWh 3.3 CONNECTING POWER GRIDS Renewable power sources are often builtfrom scratch, beginning on a small scaleand gradually expanded. Wind turbine farms is the typical case, but this is alsotrue for photovoltaic power generation.These power sources are usually locatedwhere the conditions are particularlyfavorable, often far away from the mainAC network. At the beginning, such aslowly expanding energy resource cannotsupply a remote community with enoughpower. An HVDC Light link could be anideal solution in such cases.First, the link could supply the communitywith power from the main AC grid,eliminating the need for local generation.The HVDC Light link could also supply thewind turbine farm with reactive power for the generators, and keeping the powerfrequency stable.When the power output from the windgenerators grows as more units are added,they may supply the community with asubstantial share of its power needs. Whenthe output exceeds the needs of theCommunity, the power flow on the HVDCLight link is reversed automatically, and thesurplus power is transmitted to the mainAC grid. Wind power Small scale hydropower HVDC Light Extruded cable Distant ac- grid Waste gas is usually burned at offshoredrillingplatforms, since it is too expensive,or technically difficult, to use the gas for power generation and transmit it by an ACcable to the main grid on the shore. Thus,the energy content of the gas is wasted, andthe primitive burning process is source ofpollution. With an HVDC Lightunderwater cable transmission, the gas canbe used as gas turbine fuel, supplying boththe platform and the main AC grid withpower. The process of burning the gas ingas turbines would also produce much acleaner exhaust than simple burning woulddo.The DC underwater cable network could easily be extended to other offshoreplatforms. 3.4 ASYNCRONOUS LINKS Two AC grids, adjacent to each other butrunning asynchronously with respect toeach other, cannot exchange any powerbetween each other. If there is a surplus ofgenerating capacity in one of the grids itcannot be utilized in the other grid. Each ofthe networks must have its own capacity of peak power generation, usually in the formof older, inefficient fuel fossil plants, ordiesel or gas turbine units. Thus, peakpower generation is often a source ofsubstantial pollution, and their fueleconomy is frequently bad.A DC link, connecting two such networks,can be used for combining the generationcapacities of both networks. Cheap surpluspower from one network can replace peakpower generation in the other. This willresult in both reduced pollution levels andincreased fuel economy. The powerexchange between the networks is alsovery easy to measure accurately. 4. ADVANTAGES * Transmission by HVDC Light saves the environment by replacing local fossil-fueled generation withtransmission from main AC-grid. * Connecting small scale renewable power to main AC –grid. * HVDC Light is inherent environmentally friendlycables instead of OH transmission lines. * Virtually no magnetic field. * No ground currents because of bipolar transmission. 5. CONCLUSION HVDC Light technology saves theenvironment by replacing remote fossilfuelledgenerators with cost-efficienttransmission of power from efficient andclean, large-scale generation productionunits. The efficiency of a modern, largescale, thermal generating plant is usually 25percent higher than that for a modernsmall or moderate scale diesel generatorplant,Vice versa, HVDC Light provides aconvenient and cost-effective way forconnecting renewable and non-pollutingenergy sources as wind power farms andphotovoltaic power plants to a main grid.The HVDC Light technology in itself hasstrong environmental benefits. Since poweris transmitted via a pair of underground cables, the electromagnetic fields from thecables cancel each other. Any residual fieldis a static field, as opposed to the powerfrequencyfields radiated from AC cables.Since HVDC Light transmissions arebipolar, they do not inject any currents intothe ground. Ground currents can disturbcommunications systems or causecorrosion on gas or oil pipelines.A pair of light-weight DC cables can beeasily plodded into the ground at a costthat is comparable to or less than for acorresponding AC overhead line. Asopposed to an overhead line, anunderground cable pair has no visualimpact at all on the landscape. Usually it’salso much easier to obtain permissions andpublic approval for a cable transmissionthan for an overhead line, especially inresidential areas. ACKNOWLEDGEMENT Our sincere thanks to HOD and FACULTIES for encouraging us to prepare the above document. A special thanks to IEEE.org REFERNCES [1] K. Eriksson, â€Å"HVDC Lightâ„ ¢ and development of Voltage SourceConverters†, IEEE T&D 2002 Latin America, Sà £o Paulo, Brazil, March. [2] L. Carlsson, G. Asplund, H. Bjà ¶rklund, M. Ã…berg, â€Å"Present trends inHVDC converter station design† IV SEPOPE Conference, Foz doIguacu, Brazil. [3]IEEE explorer.org

The Next Medical Advancement Artificial Lung Transplant

Davina Lopez Ms.Loncono English 2 20 March 2015 The Next Medical Advancement: Artificial Lung Transplant The artificial lung is on a road to becoming the greatest thing in medical history. Over 200 million people suffer from respiratory diseases, 350,000 people a year die from lung disease and 150,000 more people require medical care for this disease. Individuals that suffer with respiratory diseases often need a caretaker to look after them if they cannot do basic things like use the restroom without gasping for air to breath or drive to the store by themselves. The artificial lung allows people to breath normally just like the lungs humans genetically possess. Also, this technology allows people to do everyday things that they could not do before. The artificial lung is not a pertinent solution but, this gives people the opportunity and gift of more time to live as they wait for a donor lungs become available. 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