Critical Review of a Technology and Economics Article :: Economics Essays

The article Digital Technology and Institutional Change from the Gilded Age to Modern Times: The Impact of the Telegraph and the Internet describes the difficulties that exist when trying to create an accurate economic model showing responses to new, economy changing, technologies. The author Ronnie Phillips mainly focuses on institutional economics and, by showing the history of other technological advances, the need for institutional analysis. He explains how the challenge is to explain societal change, recognize what and how it happens, and create policies that will "foster" increased living standards throughout the world. The way that the author forms his article is by first giving a rather exhaustive history of the telegraph, and reviews the impact that it had when it became a major form of fast communication. He then goes over some factors that are essential to understanding the evolution of society. One, that technology is of the nature of a "joint stock of knowledge for humankind"; two, the role institutions and organizations (like the government) play in the development of the technology; three, a so-called ceremonial encapsulation and path dependency; and four, the unpredictability of technological change and it’s impact on society. The last half of the article addresses institutional economics, while not very clearly, he writes about the institutional changes that the internet has had on the economy, while going into a short history of the growth of the internet. The conclusion of the article involves an argument/discussion about whether or not the arguments presented in the article substantiate a "new institutional" or "old institutional" methodology versus whether or not they fall within neoclassical theory. Many questions remain unanswered through the end, and even more are raised right in the last paragraph. Although the author does raise some very interesting and provoking questions in the beginning of the article, unfortunately, some of them are very difficult to answer, or just can’t be answered. While the article doesn’t solve any problems, it does raise awareness and creates some interesting connections with the present and the past. The overall question the author wishes to answer is "how can economists understand and explain the nature of societal change?" The information is explained mostly through a narrative history with a short quantitative analysis of the growth of the telegraph and the Internet.

Government Assistance on Welfare Programs

S. B. 311 will reform the current system of welfare. The reform of the national system is based on the Wisconsin Works or W-2 bill. The bill makes it necessary for people receiving financial, medical, and other various types of government assistance to work for what they receive. The goal of this bill is to eventually get everyone off of the current welfare system. This bill requires everyone who is currently receiving welfare to find employment or enter a job training program. The part of the W-2 bill that will be included is the part that deals with job location. Every participant would have to meet with a financial and employment planner, who would help develop a money and time management program for that person. They would also determine which level of employment or training the participant is ready for. Here are the levels from top to bottom: Unsubsidized Employment: People entering at this level will be offered the best available and immediate job opportunity. If the job does not provide a high enough income to support oneself, income credits, food stamps, Medical Assistance, and child care may be accessible for 6 months. This period of time is given to the participant to locate a higher income job. Trial Jobs: These jobs are designed for people who are not able to locate unsubsidized work. The bill would cover added costs to the employer for training an employee which might need extra support in job training for the first 3-6 months. These trial jobs should result in permanent positions. While a participant is working at a trial job the would be eligible for all of the current assistance programs. If a person quits a trial job they will be ineligible for any further financial or any other type of assistance. Community Service Jobs: This category is reserved for people who do not have the job skills necessary to be hired by a regular employer. CSJ workers would receive $700 per week for up to eight months. During this period, a participant would have to work 30 hours a week and have 10 hours of educational training a week. After the eight months, the participant would be transferred to a trial job. Transition: Transition jobs are only for those people unable to perform self-sustaining work. These participants would receive up to $700 a week for up to a year. During this period, a participant would be required to have 30 hours of work and/or developmental training a week and 10 hours of educational training a week. Participants would be eligible for all assistance programs and would be required to move to the CSJ category after a year. These are the measures that would be taken to help people find employment and permanently get them off of welfare. The current national system that is being used for work requirements is TANF. TANF stands for the Temporary Assistance to Needy Families. The required number of monthly hours of participation in the program is 25 hours for 1999. Job skills ttraining, education related to employment, and secondary school or GED completion does not count towards the first 20 hours of participation. They can be in the program for up to 24 months and can receive all of the current welfare benefits. Then job searching is allowed for an additional 3 months, while participants still receive benefits. The only punishment this programs implements for able adults that do not work is that the adult would only receive foods stamps for 3 months out of a three year period. However, the person would still be eligible for other assistance benefits. The current national system seems like a joke. It is practically encouraging people not to work. It has a basis for some practical ideas, but the requirements are far too small and there is virtually no motivation for a person to work. Everyone is not given an equal chance to get a job growing up, but that does not mean working Americans should have to support them. S. B. 311 proposes a practical working plans for unemployed citizens and also has rigid standards. The expectations are high of the participants, but it is time that unemployed people have to work for what they receive. The bill proposes a plan which provides adequate assistance for people receiving job training and assistance to those who are starting unsubsidized work. On the other hand, the guidelines of the bill were designed not to tolerate an unwillingness to work. If a person chooses not to work, or to go through the levels of job training, they will receive no government assistance. This seems harsh, but who wants to support someone who refuses to work? The participants of this program are given more than a fair chance to find employment and if they choose not to work, they will suffer the consequences.

Guilt in Macbeth Essay - 1708 Words

Guilt in Macbeth There is a large burden of guilt carried by Lady Macbeth and Macbeth in Shakespeares tragedy Macbeth. Lets look at this situation closely in the following essay. Fanny Kemble in Lady Macbeth asserts that Lady Macbeth was unconscious of her guilt, which nevertheless killed her: A very able article, published some years ago in the National Review, on the character of Lady Macbeth, insists much upon an opinion that she died of remorse, as some palliation of her crimes, and mitigation of our detestation of them. That she died of wickedness would be, I think, a juster verdict. Remorse is consciousness of guilt . . . and that I think Lady Macbeth never had; though the unrecognized pressure of†¦show more content†¦[. . .] Macbeths capacity for seeing things that may or may not be there is almost limitless, and the appearance of the mousetrap play to Claudius, though more easily explained, has the same dramatic point as the appearance of Banquos ghost. (90) The Tragedy of Macbeth opens in a desert place with thunder and lightning and three witches who are anticipating their meeting with Macbeth. Macbeth is greeted by the witches with hail to thee, thane of Glamis, thane of Cawdor, and thou shalt be king hereafter! When Ross and Angus arrive with news of Duncans reward (He bade me, from him, call thee thane of Cawdor), it is logical for Macbeth to assume that all of the weird sisters prophecies will come true. At this point in the play there is no guilt felt. After the kings announcement that We will establish our estate upon / Our eldest, Malcolm, Macbeth says, The Prince of Cumberland! that is a step / On which I must fall down, or else oerleap, for his scheming is seriously underway. At Inverness in Macbeths castle, his lady anticipates Duncans visit: The raven himself is hoarse / That croaks the fatal entrance of Duncan / Under my battlements. Beginning at this moment in theShow MoreRelatedGuilt In Macbeth880 Words   |  4 PagesThe story â€Å"The Tragedy Of Macbeth† also called The Scottish Play was written in 1606, by William Shakespeare. The story takes place in Scotland where King Duncan is in charge the country. Macbeth who is the Thames of Glamis, will go on an adventure to take leadership of the country of Scotland, while he also battles with his personal insanity along the way. Macbeth will eventually be King of Scotland and have a miserable reign due to his guilt, inadequacy and tyranny. Macbethsmiserable reign startsRead MoreEffects of Guilt in Macbeth776 Words   |  4 PagesPaul Broussard English IV H October 26, 2011 Effects of Guilt in Macbeth The psychological effects of guilt are vividly depicted in Macbeth and cloud the mindset of characters throughout the play. In much of Macbeth, a sense of guilt Macbeth and Lady Macbeth both possess leads them to take actions that ultimately lead to their downfall. It is this sense of guilt that drives them both mad. Guilt plays a large part in influencing Macbeth and his wife act after they have committed their crimesRead MoreMacbeth Guilt Essay1135 Words   |  5 PagesWilliam Shakespeare’s Macbeth is a tragedy in which the plot evolves in great accordance to the guilt that the individual characters feel. The guilt starts with the planning and execution of the murder of King Duncan. To this event Lady Macbeth and Macbeth react in different ways. They both become guilty in some way or another but the guilt they feel is comprised of different reasons. It is due to their differences in character that they react in the ways they do. While it might not seem like bothRead M oreTheme Of Guilt In Macbeth901 Words   |  4 PagesMacbeth is a beautiful literary work, with many ups and downs of each and every character. The two principal themes throughout Macbeth are the struggle for power and the resulting waves of guilt that overcome the characters, most prominently Macbeth and Lady Macbeth. The reader experiences the guilt that starts to overcome the characters and their plunge into madness. In Macbeth, Shakespeare brilliantly displays the inner workings of a guilty person’s mind; and uses both themes to heighten the chaosRead MoreGuilt In Macbeth Essay1003 Words   |  5 PagesGuilt: For the Better or Worse? Guilt may be a lesson to learn or detrimental it depends on how one manages it. Additionally, one may interpret it as being necessary to flourish or a hindrance in one’s path. Individuals, in reality, novels, and plays may at some point feel this emotion, and when they encounter it, it may affect them positively or negatively. In the play Macbeth and the novel A Separate Peace, various characters begin to feel guilty for the actions they have committed beforehandRead MoreThemes Of Guilt In Macbeth711 Words   |  3 PagesMacbeth is a story written by Shakespear filled with many different themes. These themes are statements about life and human nature. Some of the most important themes are guilt, things are not what they seem, fate versus free will, and nature versus the unnatural. All of these themes were important to us and the story. The first theme of guilt is a message that says that you should not commit wrong doing and suffer the consequences. In Macbeth guilt is shown in many different ways but one of theRead MoreThe Theme Of Guilt In Macbeth1150 Words   |  5 PagesGuilt is the gut punching feeling inside in which you feel you could’ve done something to prevent an action that has gone wrong. We feel so powerless to stop it and eats us on the inside until we finally do the right thing. The play Macbeth, reveals how in the end your guilt will overpower your conscience and will eventually lead you to your greatest downfall. The theme of guilt as revealed in Macbeth, continues to relate to modern society. The guilt in Macbeth compares to many situations with societyRead MoreThe Theme Of Guilt In Macbeth1871 Words   |  8 Pageslifetime guilt will push them over the edge and drive them crazy. It could just be a mild deed like lying to you parents about sneaking out at night or an extreme deed like ro bbing or even murdering a person. In the play Macbeth, written by William Shakespeare, the main character Macbeth is driven to insanity because of all the guilt that he holds. Macbeth is not the only character in the play who goes insane because of guilt that they carry. In fact there are so many characters who have guilt thatRead More The Guilt of Macbeth and Lady Macbeth Essay814 Words   |  4 PagesThe Guilt of Macbeth and Lady Macbeth Guilt is a very strong and uncomfortable feeling that often results from one’s own actions. This strong emotion is one of the theme ideas in William Shakespeare, â€Å"Macbeth†. Both Macbeth and Lady Macbeth feel guilt, but they react in different ways. Guilt hardens Macbeth, but cause Lady Macbeth to commit suicide. As Macbeth shrives to success guilt overcome’s Macbeth where he can no longer think straight. Initially Macbeth planned was to kill Duncan but itRead More The Guilt of Macbeth and Lady Macbeth Essay1709 Words   |  7 PagesShakespearean tragedy Macbeth scarcely feel guilt - with two exceptions: Macbeth and Lady Macbeth. In this essay lets consider their guilt-problem. In his book, On the Design of Shakespearean Tragedy, H. S. Wilson comments regarding the guilt of the protagonist: It is a subtler thing which constitutes the chief fascination that the play exercises upon us - this fear Macbeth feels, a fear not fully defined, for him or for us, a terrible anxiety that is a sense of guilt without becoming (recognizably

Mass Incarceration In Michelle Alexanders The New Jim...

Jim Crow laws were state and local laws that reinforced racial segregation in the South between the end of Reconstruction in 1877 and the beginning of the civil rights movement in the 1950’s (Urofsky). The laws mandated segregation of schools, drinking fountains, restrooms, buses, and restaurants. In legal theory, blacks received â€Å"separate but equal† treatment under the law--in actuality, public facilities were nearly always inferior to those for whites, when they existed at all. In addition, blacks were systematically denied the right to vote in most of the rural South through the selective application of literacy tests and other racially motivated criteria (PBS). Despite Jim Crow laws being abolished in 1964 when President Lyndon Johnson†¦show more content†¦It is a status that will follow and affect every ex-offender even after they have served their time in jail. In this case, our criminal-justice system is constantly discriminating against African Ame ricans in order to identify them as felons and take away their rights. Currently, more than two million African Americans are under the control of the criminal-justice system--in prison or jail, on probation or parole. Felon-disenfranchisement laws bar thirteen percent of African American men from casting a vote, thus making mass incarceration an effective tool of voter suppression--one reminiscent of the poll taxes and literacy of the Jim Crow era. Employers routinely discriminate against an applicant based on criminal history, as do landlords. In some major urban areas, more than half of working-age African American men have criminal record and are subject to legalized discrimination for the rest of their lives. These men are permanently locked into an inferior, second-class status, or caste, bylaw and custom. As Alexander argues, we have not ended racial caste in America; we have merely redesigned it. Alexander states that the single greatest contributor to this mass incarceratio n in the United States is the â€Å"war on drugs†. Studies consistently indicate that people of all races use and sell illegal drugs at remarkably similar rates. However, the drug war has been waged almost exclusively in poor communities of color. Therefore, an overflow of black andShow MoreRelatedThe New Jim Crow By Michelle Alexander1313 Words   |  6 Pages The New Jim Crow Michelle Alexander’s the new Jim Crow Mass Incarceration in the Age of Colorblindness examine the Jim Crow practices post slavery and the mass incarceration of African-American. The creation of Jim Crows laws where used as a tool to promote segregation among the minority and white American. Michelle Alexander’s the new Jim Crow Mass takes a look at Jim Crow laws and policies were put into place to block the social progression African-American from the post-slavery to the civilRead MoreThe New Jim Crow By Michelle Alexander1316 Words   |  6 Pages The New Jim Crow Michelle Alexander’s the new Jim Crow Mass Incarceration in the Age of Colorblindness examine the Jim Crow practices post slavery and the mass incarceration of African-American. The creation of Jim Crows laws were used as a tool to promote segregation among the minority and white American. Michelle Alexander’s the new Jim Crow Mass takes a look at Jim Crow laws and policies were put into place to block the social progression African-American from the post-slavery to theRead MoreThe New Jim Crow : Mass Incarceration1361 Words   |  6 PagesBook Review Michelle Alexander, The New Jim Crow: Mass Incarceration in the Age of Colorblindness The premise of the ‘The New Jim Crow: Mass Incarceration in the Age of Colorblindness’ by Michelle Alexander, is to refute claims that racism is dead and argue that the War on Drugs and the federal drug policy unfairly targets communities of color, keeping a large majority of black men of varying ages in a cycle of poverty and behind bars. The author proves that racism thrives by highlighting theRead MoreMass Incarceration Is Defined As The Imprisonment Of A Large Amount Of People1439 Words   |  6 PagesAt the simplest level, mass incarceration is defined as the imprisonment of a large amount of people. However, that does not tell the whole story. The majority of people incarcerated are minorities, and although mass incarceration began as a system of unjust racial and social control, today it continues for many political reasons including government grants, swaying voter opinion, and for-profit prison revenue. The United States incarcerates more people, per capita, than any other nation in theRead MoreMichelle Alexander s The New Jim Crow1495 Words   |  6 Pages Baker, Anderson, and Dorn (1992) talk â€Å"A Critical Thinking Approach† giving the readers six guidelines to follow when critically assessing any literary work, all of which can apply to Michelle Alexander’s The New Jim Crow. The first guideline is about how accessible is her work. Throughout the book, Alexander made her work as clear and concise as she possibly could by explaining certain points over again in a different chapter to make sure that the audience understands whatRead MoreThe New Jim Crow?919 Words   |  4 PagesAt first Michelle Alexander, the author of The New Jim Crow, did not see the prison systems as racially motivated until doing further research. After researching the issue, Alexander found the prison system was a way to oppress African Americans and wrote the novel The New Jim Crow. The New Jim Crow follows the history of the racial caste system and in the novel Alexander comes to the conclusion that the mass incarceration of African A merican is the New Jim Crow, or in other words a new system ofRead MoreThe, Jim Crow And Mass Incarceration1056 Words   |  5 Pages Michelle Alexander writes and speaks about the 3 caste systems slavery, Jim Crow Laws, and mass incarceration. She asserts that racial separation has not gone away but rather morphed into present mass incarceration. Racial segregation has taken a new form and exists in prison systems and in socio-economic ways Caste system locks people up literally virtually. Alexander writes, â€Å"Jim Crow and mass incarceration have similar political origins. As described in chapter 1, both caste systems were bornRead MoreThe New Jim Crow Law1014 Words   |  5 PagesMass incarceration is known as a net of laws, policies, and rules that equates to the American criminal justice system. This series of principles of our legal system works as an entrance to a lifelong position of lower status, with no hope of advancement. Mass incarceration follows those who are released from prison through exclusion and legalized discrimination, hidden within America. The New Jim Crow is a modernized version of the original Jim Crow Laws. It is a modern racial caste system designedRead MoreThe New Jim Crow : Mass Incarceration Essay795 Words   |  4 Pagesasked to write a reflection on discussed The New Jim Crow: Mass Incarceration in the Age of Colorblindness which is a book written by Michelle Alexander a highly acclaimed civil rights lawyer, advocate and Associate Professor of Law at Ohio State University. Michelle Alexander states that although we made tremendous progress with Civil Rights Movement in the 1950s by unifying as a race and fought to seemingly ended the old Jim Crow era by the passing of laws such as the 1965 voting act and Brown V.SRead MoreThe New Jim Crow : Mass Incarceration1081 Words   |  5 Pages Michelle Alexander’s The New Jim Crow: Mass Incarceration in the Age of Colorblindness outlines how the criminal justice system has systematically designed new methods of discriminating against African Americans. The book advocates for racial justice, specifically, for African Americans and contends they [African Americans] were targeted and subsequently incarcerated, by white voters and public officials, through the War on Drugs campaign. President Reagan and his Administration exploited racial

Jack Londons Attitude Towards Life in the Short Story,...

Jack Londons Attitude Towards Life in the Short Story, The Law of Life Jack London, real name John Griffith Chaney, is well known American novelist and short story writer, born in California (Merriam Websters Encyclopedia of Literature 629). Londons short story The Law of Life was first published in Mc Clures Magazine in 1901. It was one of his first stories written around the time at which London had just discovered that this way of writing made the biggest impression on the reader.(Tenant 1) One of the most effective elements is that the main character of the story is an old Indian, named Koskoosh. He is left by his tribe and his relatives, with nothing but a fire and some wood to keep it burning for few hours. He was†¦show more content†¦It is like a river, no one can stop its flow. Second thing which may be called ?the law of life? is Darwin?s idea that in the world only the strongest may survive. These who are weak, old and are not able to take care of themselves must die and give place to the stronger living beings. In the very first paragraph of this short story the narrator introduces Koskoosh?s granddaughter: ?Sit-cum-to-ha was his daughter?s daughter, but she was too busy to waste a thought upon her broken grandfather? (London 956). Young people often have no time to be with their old relatives. They do not think this is an interesting beguilement to spend time listening to an old man?s memories and advices. Sit-cum-to-ha also is busy with other things: ?life called her, and the duties of life, not death? (London 956). She must do her duties in order to survive. Another example of Darwin?s theory may be ?Little Koo-tee?: ?a fretful child, and not over strong? (London 957). Even a child if he is not strong enough to survive has to die. ?It would die soon, perhaps, and they would burn a hole through the frozen tundra and pile rocks above to keep wolverines away.? (London 957) The circle of life of his little child probably is very small. The last and the most important ?law of life? is that everybody sooner or later have to leave this world. Death is an end of any living creature in Nature. It is difficult, especially when personallyShow MoreRelatedA Man s Best Friend1138 Words   |  5 Pagescoming though, the sun is still out. He then responded by saying â€Å"you’ll see; his instinct is never wrong.† Nevertheless, later that day it did thunderstorm. My story of the dog’s instinct being superior to my intellect is similar to Jack London’s short story, â€Å"To Build a Fire.† In this story London contrasts the two characters in the story – the unnamed man and his dog. These two character foils accompany each other on their daring travel through the deadly weather conditions of the Yukon. The unnamedRead MoreJack Londons Naturalism5435 Words   |  22 PagesJack Londons Naturalism: The Example of The Call of the Wild by Earl J. Wilcox BOTH JACK LONDONS intentions and his accomplishments in The Call of the Wild account for the artistic success of the book. For the story which London intended to write—about a dog who merely reverts to the wild—developed into a full, 32,000 word novel. And the simplicity intended in the implicit atavism in the dogs reversion also became a more complex discussion than London apparently bargained for. But a fortuitousRead MoreInto The Wild By Jon Krakauer4187 Words   |  17 Pagescredible source that brings new insight, tenacity, and style to the art of journalism. Setting: Following the impulses of his romantic notions, Christopher McCandless finds himself ill-equipped in the Alaskan winter of 1992. A far cry from the â€Å"good life,† the terrain is â€Å"no picnic† with its â€Å"big and fast† rivers and â€Å"mosquitoes [that] eat [people] alive† (4-5). Within the forest lies the abandoned remains of a Faribanks City Transit System bus, an ominous reminder of what once was when man lived onRead More Visions of The Primitive in Langston Hughes’s The Big Sea Essay examples6201 Words   |  25 PagesHudson† river (p.91) sharply contrasts with Conrad’s fictional rendering of a seething, sinister Congo, and Hughes quite literally goes nowhere marooned on his â€Å"rusty tub†, whilst Marlowe embarks on a fraught voyage that will irrevocably reshape his life. However, one of the most compelling sections of The Big Sea focuses on Hughes’s six-month odyssey as a crewmember of the S. S. Malone, a freighter bound for the West Coast of Africa. The apparently casual reference to Heart of Darkness (1899) thusRead MoreVictorian Novel9605 Words   |  39 Pagesimages of over-dressed ladies and snooty gentlemen gathered in reading rooms. The idea of â€Å"manners† does sum up the social climate of middle-class England in the nineteenth century. However, if there is one transcending aspect to Victorian England life and society, that aspect is change. Nearly every institution of society was affected by rapid and unforeseeable changes.  As some writers greeted them with fear and others embraced the progress, this essay will guide a reader through an important eraRead MoreInterpretation of the Text13649 Words   |  55 Pageschronological order): epic, tragedy, comedy, novel, short story, and creative nonfiction. They can all be in the genres of prose or poetry, which shows best how loosely genres are defined. This correlation is shown in Fig. 1.1. Additionally, a genre suc h as satire, allegory or pastoral might appear in any of the above, not only as a sub-genre, but as a mixture of genres. Epic Tragedy Genres^ Comedy Novel ... ....... : Prose 2 O Poetry Short story Creative nonfiction Fig. 1.1. Correlation ofRead MoreBritish Culture11529 Words   |  47 Pagesnations: - England - Scotland - Wales - Ireland Names of flags: - St George’s Cross - St Andrew’s Cross - Dragon of Cadwallader - St Patrick’s Cross At one time the four nations were distinct from each other in almost every aspect of life. - People in Ireland, Wales and highland Scotland belonged to the Celtic race - People in England and lowland Scotland were mainly of Germanic origin Languages spoken in Celtic areas: - Irish Gaelic, Scottish Gaelic and Welsh Languages spokenRead MoreContemporary Issues in Management Accounting211377 Words   |  846 Pagespublished 2006 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, without the prior permission in writing of Oxford University Press, or as expressly permitted by law, or under terms agreed with the appropriate reprographics rights organization. Enquiries concerning reproduction outside the scope of the above should be sent to the Rights Department, Oxford University Press, at the address above You must not circulateRead MoreMonsanto: Better Living Through Genetic Engineering96204 Words   |  385 Pages441 441 CASE STUDIES A summary of the case analysis I N T R O D U C T I O N Preparing an effective case analysis: The full story Hearing with the aid of implanted technology: The case of Cochlearâ„ ¢ – an Australian C A S E O N E high-technology leader Delta Faucet: Global entrepreneurship in an emerging market C A S E T W O DaimlerChrysler: Corporate governance dynamics in a global company C A S E T H R E E Gunns and the greens: Governance issues in Tasmania C A S E F O U R Succeeding in theRead MoreExploring Corporate Strategy - Case164366 Words   |  658 PagesECS8C_C01.qxd 22/10/2007 11:54 Page 597 CASE STUDIES ECS8C_C01.qxd 22/10/2007 11:54 Page 598 ECS8C_C01.qxd 22/10/2007 11:54 Page 599 Guide to using the case studies The main text of this book includes 87 short illustrations and 15 case examples which have been chosen to enlarge speciï ¬ c issues in the text and/or provide practical examples of how business and public sector organisations are managing strategic issues. The case studies which follow allow the

Signal generators also know as function generator or test oscillator Free Essays

string(96) " input is supplied into the 8bit counter which evaluate the input with an analog, \(Q5 to Q0\)\." ABSTRACT Signal generators also know as function generator or test oscillator, have come to be more popular and most used testing device for the engineers especially and also for the medical sector. Signal generator delivers an accurate calibrated range. It provides a signal that can be adjusted according to the frequency, output voltage, impendence, waveform and modulation. We will write a custom essay sample on Signal generators also know as function generator or test oscillator or any similar topic only for you Order Now It has been in existence and they are used in so many ways before time till present. An American inventor Nikola Tesla has conveyed electricity from one location to another in the form of signal and uses the same frequency. This report talks about the overview of a signal generator, how they do function using their applications and also describe to us their operating principles using the direct digital synthesis DDS, their types and designs. The Next page gives you a brief introduction about the early days of signal generator and how they are been used in those days. INTRODUCTION Before the Initiation of this device called signal generator which is around 1906 to 1920 are regarded to be the early days of radio, the only way for testing of new apparatus or electronic instrument was to use another similar device to create the signal, which was the case of new tools and modulation format in radio. During that time, this basic method of testing worked excellently with minimum percentage errors, but problem arises when there is a circumstance whereby they might be diverse devices under test. To solve this problem, there must be need for so many reference devices. One radio’s was picked which was used as a performance parameter and was measured which was now used as the standard or â€Å"golden radio† as it has been called. Even if they are expensive, a regular change in their functioning features either during a short time as a result of warming up or during a long time as an effect of continued use, and for this reason their will be reduction in their accuracy. The need for signal generator that can effectively used to test devices as the field of engineers must be to reduce this flow. However, we are going to explain the device â€Å"signal generator† in this report and also we will discuss about the operating principles, and also the things I have already mention in the abstract area. In this next page, we will be looking at the overview of this device signal generator.  ­SIGNAL GENERATOR (Outline and types) A signal generator also called a function generator or a text signal generator is an electronic device designed to perform a variety of operations which includes band pass filter characteristics, the response of amplifiers to frequency or fault tracing in many electronic equipment and circuits. â€Å"Signal generator is a tool widely used in fields such as industrial electronic instrumentation, medicine, production, communication and research†, (Alloca and Stuart, 1983). A signal generator is the stimulus source that pairs with an acquisition instrument to create the two elements of a complete measurement solution. In its various configurations, signal generator can provide stimulus signals in the form of analog waveforms, digital data patterns, modulation, noise and it may add known, repeatable amount and types of error (distortion) to the signal it delivers. Signal generator can produce the most types of waveforms or signal which are square waves, sine waves and triangular waves over a wide range of frequency. Coombs, (1972) declares that the frequency range of a signal generator maybe less than 1Hzto at least 1MHz. Some other type of signal generators, have the ability to produce pulse, trapezoid and ramp waveforms including the ones mention above. Therefore, there are many types of signal generator designed to a variety of uses which has much possible application meaning that one particular type of signal generator may not be suitable for all pur poses. Here are the two main type of signal generator Arbitrary waveform generator Function signal generator Below is a picture example of a typical function generator: ARBITRARY WAVEFORM GENERATOR Arbitrary waveform generators (AWG) are complicated playback system that delivers waveforms based on stored digital data that describes the regularly changing voltage levels of an AC signal. The arbitrary waveform generator can produce any kind of waveform you can think of. You can use many methods to create the needed output (from mathematical formulae to drawing the waveform). FUNCTION SIGNAL GENERATOR Function generators are more simple compare to arbitrary waveform generator. They generate simple signal in wave form and this signals are been produce by a circuit which creates the repeating wave which is usually a sine wave. They are most often use in process of designing or repair simples electronics. DESIGN OF SIGNAL GENERATORS Before the modern waveform generators were initiated, analog was the mode of operation. In some industries, analog refers both to the circuit technique used to generate signals and to the signal themselves. Functionality, economic feasible, and types of waveform needed have really change the design of signal generator in period of times, although the traditional analog signal generators still exist till date. The analog is a means to represent a material measure, for instance an indicator on a current meter (regulator), by a quantity whose measurement is known. Such measurements, do not really give the accurate result of a particular tool or device under test, as they are prone to having drifts in their working parts. Most modern signal generators are based on the digital technologies such as the modern function generators which uses a technology known as Direct Digital Synthesis (DDS) which are able to provide a wide range of signal or waveform. The DDS device are more like to generate analog signals via creating a digital output signal that is continuously pulsed by a clock signal and at last translating the digital signal to form an analog signal. Below is the experimental diagram of this process. The Method above, illustrate that the input is supplied into the 8bit counter which evaluate the input with an analog, (Q5 to Q0). You read "Signal generators also know as function generator or test oscillator" in category "Essay examples" The matching analog now is been verified with an already stored address which is the ROM (Read Only Memory) 256 x 8. As the counter cycles through the 256 different addresses, which the ROM has for each analog, the ROM counter now picks out a digital value corresponding to that address which sequentially represents the input. This information is then processed and outputs the 256 data points to the DAC (Digital to Analog Converter) which is the 8bit converter. The analog signal obtain is then shown as a waveform. An example of a generator that uses this method illustrated above is the 20MHz sweep function generator from BK Precision (model 4040DDS) image is shown below. According to BK Precision (2010), this sweep generator is a full featured DDS generator, the unit generate superb quality waveforms with a high signal precision and stability and it provides sine and square wave outputs over the frequency range from 0.1Hz to 20 MHz in one extended range. Most of the DDS generator today are dedicated instrument, simple and comfortable, and are at low cost from a few tens of dollars to tens of thousand of dollars. In the next section, we are going to look at how this device operates. OPERATING PRINCIPLES OF SIGNAL GENERATOR In this 21st century, most of the modern function generators use Direct Digital Synthesis (DDS) technology to generate output wave forms. BK Precision sweep function generator (model 4040DDS) happens to be among one of this generators. This section describes how DDS technology works. There are two fundamental ideas of DDS technology which includes: Producing an arbitrary waveform that can be in various waveforms or not assigned a particular value from a periodic ramp signals. Producing a digital ramp. First, consider producing wave function that can be in various waveforms or not assigned a particular value from a periodic ramp signal. To make this explanation more simple and understandable, imagine the ramp period (t) is greater than or equal to 0s (t ? 0), then lets call the recurring ramp function R(t) as shown in the diagram below. This ramp function R(t) as shown in figure 1 differs linearly or oscillate between 0 and 1 with period T. Now, suppose their is a new function F(t) that is defined on the interval 0? t ?1, in mathematical terminology, the domain of the function which is the values assigned to the independent variables of F(t) is the half-closed interval. Imagine to construct another wave function of period T which is similar to R(t) with the shape of F(t) and assuming again that the period is 4s using the diagram shown in figure 4, we will notice that as the time increases from t0 to t4, which is equal to one period, there is a sequence which implies that their will be a gradual rise in the function until t4, therefore calculating the corresponding value of each time and removing the integer part of it. For instance, tn= – . The calculation for t0 to t8 is shown in the table below using the figure 4 diagram. The illustration shows that there is a rise in the time value, in the sense that when one period is reach, it will start over again until another period is reached. This is how it works continuously for the defined time interval. This means that it resets after each successive cycle. On the other hand, the resetting of the time interval is carried out by a phase accumulator which is the first time interval that is the t1 = frequency. In the above example, the waveform that was created has a frequency of 0.25Hz and a phase angle of 90 that means the frequency is x360 As BK precision (2010) guild book instruct that to produce a digital ramp, as an alternative of increasing the time intervals by 1s, let the increment be in terms of ?, the phase angle, by the digital clock and for an N-bit counter, it will count from 0 to 2N – 1, then reset to 0 again. For example, let the value of be N = 4, which will be (24), therefore the counter result is 16 bits. When a signal is received, it will only match up to one of the bits frequencies and the waveform of that frequency will be generated. Lastly, the generated waveform might be displayed as a square or triangular signal using the control buttons on the device. This is made possible by including an operating amplifier (op-amp) in the circuit. Assume the received input signal was a sine wave, it can be converted to a square waveform; an op-amp acts as a comparator that gives and output signal of â€Å"1† only when the amplitude of the sine wave is greater than 0 and a â€Å"-1† when the amplitude is less than 0. According to Floyd (2009), this change was essential because digital data processing and transmission can be more effective and dependable than analog data and it’s of advantage when data storage is needed. FUNCTIONS AND APPLICATIONS Signal generators have hundreds of different applications and function that are suited for variety of use in many fields but in electronics measurement context, they fall into three basic types: Verifications Characterization Stress and margin testing VERIFICATION In the world of electronic and technologies, wireless equipment designers that are building new transmitter and receiver hardware must stimulate baseband I and Q signals (with or without impairments), to verify some wireless standards, a high performance arbitrary waveform generators can provide the needed low-distortion, high-resolution signals at rates up to 1GB/secs. CHARACTERIZATION This is a state whereby the newly developed digital to Analog converter (DAC) and the Analog to digital converters (ADC) must be systematically tested to determine their limits of undeviating, distortion and so on. STRESS AND MARGING TESTING Advanced signal generators, save the engineers hours of calculation by providing efficient built- in jitter editing and generation tools because engineers that works with the serial data stream architectures; commonly used in digital communications buses and disk drive amplifiers, need to stress their devices with impairment especially jitter and timing violations so engineers must characterize their emerging designs to ensure that the new hardware meets design specifications across the full range of operation and more. However, using this device, much difficulty in electronics and also field like the medicine can now be resolute easily. To design an assorted signal and a high speed low filter data, an arbitrary waveform generator can be used. They are specifically design for it. Radio frequency signals are used to achieve tests on radio transmitters and receivers. (Theraja and Thereja, 1959) Signal generators that are connected to oscilloscopes can be use in testing faults in electronic equipment and devices. In telecommunications today phones functions using signals, for example: the process, transmit and receive data. Devices for example: digital X-ray appliances, brain mapping system and advanced cardiology uses signal in most medical field today. CONCLUSION The modern DDS generators have some advantages and disadvantages of it depict that they help in solving solutions in various fields. Describing about the advantages of DDS, you discover that their frequency is tuneable with sub-Hertz resolution; their phase angle is digitally adjustable, as long as the clock is stable, they don’t go with the flow due to temperature changes or aging of components, addition of arbitrary waveform generator is not theoretically difficult and lastly they have simple design and low parts count which help to keep cost down. However, describing the disadvantages of this machine has to do with the negative aspect which is their output frequency is ? ? the clock frequency, their amplitude is also fixed that is; they need external circuitry to change, sine wave is sampled and not spectrally pure; distortion is present at that moment. But this disadvantages, does not cost more harm the technology is still the best and with more careful design in future, these advantages can me minimized. REFERENCES Floyd, L. (1977) Digital Fundamentals. 10th Edn. Upper Saddle River, New Jersey: Pearson Education Ifeachor, E. and Jervis, B. (2002) Digital Signal Processing. A Practical Approach. 2nd Edn. Harlow, England: Pearson Education Hill, A. (2010) What is signal generatorAvailable at: http://www.wisegeek.com/what-is-a-signal-generator.htm (Accessed 15 March 2011.) Nashedky, B. (1996) Electronic Devices and Circuit Theory. 6th Edn. Englewood Cliffs, New Jersey: Prentice-Hall. Peterson, D. and BK Precision (2010) Function Generator and Arbitrary Waveform Generators Guidebook. Available at: http://www.bkprecision.com/support/downloads/guides/Function_and_Arbitrary_Waveform_Generator_Guidebook/BK-Function-Generator-and-AWG-Guidebook.pdf. (Accessed: 25 March 2011) Alloca, J. and Stuart, A. (1983) Electronic Instrumentation. Reston, Virginia: Prentice-Hall. Crecratf, D. et al (1990) Analogue and Digital Electronics. Great Britain: The Open University Referencec.com (2010) Signal generators. Available at: http://www.reference.com/browse/signal+generator (Accessed: 14 April 2011) Theraja, B. And Theraja, A. (1959) A Textbook of Electrical Technology. 23rd Edn. Reprint 2003. Ram Nagar, New Delhi: S. Chand Company Ltd. Coombs, C. (1972) Handbook of Basic Instrumentation. New York: Mc Graw-Hill Yourdictionary.com (2010) Nikola Tesla Biography. Available at: http://biography.yourdictionary.com/nikola-tesla (Accessed 18 April 2011) Tektronics (2008) Signal generator fundamentals Guidebook. Available at: http://circuitslab.case.edu/manuals/Signal_Generator_Fundamentals-_Tektronix.pdf (Accessed 20 April 2011) ZTech Instruments (2010) Waveform Generator Fundamentals. Available at: http://www.ztecinstruments.com//applications/waveform-generator-fundamentals.php (Accessed: 6 April 2011) How to cite Signal generators also know as function generator or test oscillator, Essay examples

Edhec Family Business free essay sample

There are a few EDHEC Global MBA participants who decided to study in this program to search for better understanding of business disciplines in order to improve their quality as managers with the main goal of returning to their countries and continue their family business. Family business can be very large, a big example is Walmart that even after 43 years and being the third largest company in the world, the Walton family still owns 48% of the stake. However, most cases of family business still relate to medium or smaller sizes. The good thing about a family business is that it has a strong sense of commitment and honor from the members. Family businesses are more likely to last because there will always be an effort on the part of the family members not to let it die or fade related to their inner values. Brazilian candidate, Andressa Lass Santos provides us with her testimony on her family business case: â€Å"The EDHEC MBA program has been helping me gain a broader perspective in relation to several business facets such as leadership, accounting, management, studying the local economy and the industry and how to combine them all in a strategic manner. We will write a custom essay sample on Edhec Family Business or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Every class has been helping me come up with ideas and is making me notice flaws that I had never perceived before, as well as areas where there are room for improvements in my family business. My father started a construction company and asphalt plant 25 years ago in Curitiba, Brazil. He is an engineer and agrees with me that if I gain more management skills it would be very useful for the company, since he has little time to invest in that, and in fact he is beginning to think to step out of the picture and work more as a counselor. As each single class goes by, I learn something new and try to think how to implement in our family business. My ideas arise from the hiring process, motivations of the employees until thinking globally of macroeconomics and strategically trying to apply how we could possibly expand our business or even find new ideas related to it, such as maybe starting another business or company that could support the construction company. For that reason I will choose the Entrepreneurship track in the MBA program, I believe it is the track that I will most benefit from when thinking about my family business and how we want to expand it. †