Wednesday, August 26, 2020
Forensic Psych Free Essays
Measurable Psychology includes the logical investigation of mental capacities and practices of the human body. It very well may be looked as being separated into two classifications, fundamental brain science and applied brain science. Essential brain research is the utilization of hypotheses and basics to clarify how perspectives, characters, qualities, and practices are connected while applied brain science is the utilization of these mental standards and speculations to conquer issues, in actuality, circumstances. We will compose a custom exposition test on Measurable Psych or then again any comparable point just for you Request Now A portion of the essential brain science examines incorporate strange, psychological, formative, and social brain science. Applied brain research applies these examinations in things like clinical, measurable, wellbeing, and instructive brain research. I decided to investigate the investigation of an applied sort of psych, measurable brain science. Legal brain research is the use of the science and calling of brain science to questions issues identifying with law and the legitimate framework. The word ââ¬Ëforensicââ¬â¢ originates from the Latin word ââ¬Ëforensis,ââ¬â¢ meaning ââ¬Ëof the forum,ââ¬â¢ where the law courts of old Rome were held. Not exclusively does criminological brain science require comprehension of the distinctive mental examinations yet in addition a comprehension of the law and how it functions. Taking a gander at lawful issues from a mental point of view consolidates brain science and the law. This type of brain science is utilized as often as possible in the legitimate framework. Legitimate frameworks utilize scientific clinicians and their training in assessments of the psychological status of litigants previously, during and after preliminary procedures. Most may think scientific brain science is just utilized in criminal issues however criminological analyst may likewise aid a wide assortment of common issues. Common issues can incorporate claims or protection claims where enthusiastic tribulation is a piece of the case. Assurance of competency of a matured or sick individual to decide, or whether a demise was a mishap or a ââ¬Å"disguised suicideâ⬠in a protection guarantee case are the two instances of how legal brain science can help certain legitimate cases. The possibility of measurable brain research originally came to fruition in the late 1800ââ¬â¢s. In any case, it wasnââ¬â¢t until the 1900ââ¬â¢s when a German therapist by the name of Hugo Munsterberg guaranteed that brain science ought to be applied to the law. Despite the fact that this is two or three hundred years from today, it wasnââ¬â¢t until 2001 that the American Psychological Association perceived criminological brain science as a specialization under the investigation of brain science. In 1906, a protection lawyer requested that Hugo survey his indicted clientââ¬â¢s examination and preliminary records. This advanced his 1908 book ââ¬Å"On the Witness Standâ⬠. It nitty gritty how mental components can impact the result of a preliminary. In the book, he examined issues with observer declaration, bogus admissions, and cross examinations. Munsterberg brings up that for different reasons why onlooker declaration is basically untrustworthy, he depicts how observer declaration is normally defenseless to what he calls ââ¬Å"illusionsâ⬠where a subjects observations could be influenced causing a wrong declaration. In the segment of the book that he calls ââ¬Å"The Detection of Crimeâ⬠, he talks about the numerous elements that can impact declarations, gain admissions, and power admissions from the individuals who are honest. He clarifies a portion of the manners in which that police have of causing suspects to admit to wrongdoings that they had not submitted, a portion of these including making their life as awkward as could reasonably be expected while in holding to have the option to separate their vitality, and ââ¬Å"worst of all giving severe stuns given with wicked brutality to the frightened creative mind of the suspect. Afterward, in 1917 one of Munsterbergââ¬â¢s understudies, William Marston, found that systolic pulse and lying were legitimately associated. This revelation helped lead the making of the cutting edge polygraph locator Forensic brain science was to a great extent stale until the 1940s and 1950s, when therapists started routinely affirming in courts as specialist s on a scope of mental points. They got ready to lead assessments to assist the court with mental statuses, the rational soundness of respondents, and legitimate ability. One of the primary employments of scientific brain science in the court was in the milestone case Brown v. Leading body of Education (1954) that finished legitimate isolation in state funded schools. Therapists demonstrated that isolation negatively affected the confidence of little youngsters and the court accepted this was a convincing contention. This demonstrated analysts were an amazingly helpful type of declaration for both the offended parties and litigants. Another case of the significance of scientific clinicians came around in 1962 when therapists filling in as psychological sickness experts were firmly upheld by the court for the situation Jenkins v. US. Here the court managed in help to clinicians being utilized as master observers when psychological instabilities are concerned. Following this model numerous different courts, both government and neighborhood, started to acknowledge the utilization of analysts and mental evaluations all the more energetically. Mental appraisal alludes to logical techniques utilized by analysts to comprehend and clarifying an individualââ¬â¢s, coupleââ¬â¢s or familyââ¬â¢s mental working. Mental evaluations help to characterize and get character, conduct, emoti ons, insight, and how they meet up. Such appraisals help to respond to demonstrative inquiries, to determine a personââ¬â¢s qualities, shortcomings and character structure, and to disclose and to anticipate conduct. Appraisals that are utilized in the measurable setting are a main action for those whom are included. Measurable mental appraisals are an inside and out procedure using broad meeting, and normalized mental tests, which produce dependable, legitimate and reproducible outcomes. To be comprehensive, an appraisal needs to analyze a scope of mental variables, for example, psychological and character working, formative history, and relational connections. These variables can be additionally separated into enthusiastic, psychological, scholarly, formative, official, instructive, social, neuropsychological, and physiological working. Data got from normalized mental appraisal has a standardizing, factual logical premise, as it thinks about the person against information gathered in tests of ordinary and clinically confused people. It permits the evaluator to decide how comparative or divergent this individual is to individuals in these examples. While people may endeavor to ââ¬Å"look goodâ⬠or ââ¬Å"look badâ⬠in interviews, contingent upon the current case, most test instruments contain different legitimacy scales on which to assess the degree to which the individual is giving genuine, real to life, protective, socially alluring, or overstated delineations of their mental wellbeing or indications. A general point of measurable mental evaluation is to give the premise to finishing up both past and dynamic factors that can assist with clarifying explicit activities, and to make proposals pertinent to the lawful issues within reach. The court designates a clinician to decide a scope of things including mental state, decreased limit, and competency. With regards to mental express, an assurance is made concerning whether there is considerable proof that the patient endures a psychological issue. Feelings are not viewed as a psychological issue. The clinician needs to think about mental impacts at the location of the supposed wrongdoing. Contingent upon the result of the assessment, the clinician may affirm in court how the debilitated mental capacities ââ¬Å"actually caused a deformity of the psychological component of the wrongdoing. The therapist doesn't need to be sure that the defendantââ¬â¢s issue made the person in question be not able to frame the aim or information or the wrongdoing, however the master must have some faith in the ââ¬Å"probability or possibilityâ⬠that it did. Specialists need to affirm with sensible clinical or mental assurance. Three fundamental regions of barrier identified wi th psychological well-being incorporate lessened limit, competency, or moderating (defending) conditions. A lessened limit appraisal centers around whether an individual had the option to fathom the supposed wrongdoing being submitted. The therapist surveyed whether the person, as he would see it his/her supposition, was composed, intentional, and objective situated. The primary inquiry is, regardless of whether the defendantââ¬â¢s conduct was influenced by a psychological issue of state of mind or thought, by liquor and additionally sedate inebriation or a compelling drive actuated by a psychological sickness influencing the individual so the individual can't avoid the motivation to submit the demonstration that the person in question has been accused of. A competency assessment evaluates whether an individual has the psychological office or capacity to comprehend the lawful procedures against them. Additionally, the assessment centers around deciding if they can help their lawyer in their own barrier. Relieving conditions are some of the time considered with respect to the defendantââ¬â¢s ability to ââ¬Å"appreciate the illegitimacy of their direct or to adjust his lead to the prerequisites of the law. â⬠Whether an individual is accused of a crime or a lawful offense, their psychological state or dysfunctional behavior is an issue to consider before conviction or before condemning. The lawyer speaking to the blamed individual may demand a mental assessment or now and again an assessment is court requested. Mental master observer declaration may likewise be utilized in an individual physical issue situation when the offended party puts forth a defense that they endured undueâ mental or emotionalâ pain and languishing. In family law cases, the gatherings might be assessed mind
Saturday, August 22, 2020
Role of Social Media in Marketing among Small Business Free-Samples
Question: Talk about the Role of Social Media in Marketing among Small Business in Australia. Answer: Presentation Perhaps the best determinant of authoritative achievement is the degree to which a business element advances its items and administrations. The steadiness and width of the market for a specific item or administration to a great extent relies upon the level to which the customers subsidiary to the association are educated about the current items and administrations (Mitchell, 2008). One critical part of limited time blend is the utilization of promoting and explicitly the different accessible online stages for showcasing. While most little associations chiefly depend on the utilization of visual media for example papers and announcements, TV and radio, the rise of innovation in many pieces of the world has raised the procedure of promotion to one more level (Nelson, 2007). For example, the ascent and utilization of portable processing has urged most associations to utilize the utilization of online stages in promoting. Such roads incorporate the utilization of sites, email just as the internet based life. The adequacy of an advertising procedure is connected to the degree to which the moved data arrives at the intended interest group. So as to advertise effectively, the limited time message should reach however many customers as could be expected under the circumstances. This progression doesn't just build the extent of the showcasing procedure yet in addition goes far in extending the associations advertise base (Kotler, 2009). The utilization of internet based life in advertising has been a compelling apparatus because of the way that most people approach these destinations because of the availabity of portable PCs. This paper traces the pretended by online networking in upgrading promoting particularly among the private companies in Australia. Concerning abstract sources on a similar subject, the paper will talk about the reasons why most organizations in Australia are presently utilizing the internet based life as one of their center promoting approaches. Writing Review: Role of Social Media in Marketing Dough puncher (2007) in Marketing procedure and the executives calls attention to that the adequacy of a showcasing instrument is a key factor when a business association is choosing its limited time draws near. This article features different components which merit looking at when as an association plans to advance its items and administrations. As indicated by the creator, the cost ramifications include is another factor worth considering (Erdem, 2008). Simultaneously, the size of the intended interest group, the nature of the data being passed just as the timetable planned to be secured are different variables worth considering in picking a commercial as well. As an effective methodology, the media used to transmit data to the collectors should take the briefest while to pass on the expected message. Also, the methodology utilized in showcasing should be savvy and consequently moderate particularly for the private companies. The creator features the different methodologies utilize d by organizations in an offer to improve the advancement of their items and administrations. These incorporate the utilization TV, radio and other composed media. He anyway brings up the prevalence of portable registering as one of the center purposes behind the utilization of web and online stages during the time spent advertising. The creator further notes that the utilization of telephones, tablets and PCs as IT devices in advertising has offered a fitting stage through which educated can be passed to the purchasers through the online networking. Bauer (2007) in the article Consumer conduct as hazard taking: Risk taking and data taking care of, calls attention to that the buyers gathering to a given showcasing apparatus decides if the association should grasp it for future endeavors or note. As indicated by the creator, the internet based life could essentially be depicted as the on the web, and for the most part casual, stages where different classifications of clients cooperate with each other to share their perspectives on specific parts of life. The writer gives the instances of Twitter, Facebook, Linked In and social structure programs as probably the most regularly utilized online social stages. During its development, the social average was essentially seen as a road for amusement. In any case, the extending base of clients which keeps on heightening as days pass by has given a decent chance to business associations. These roads have been utilized by the associations to do notices and advance their items. As confirmed by the creator, the social average has assumed a vital job in improving promoting particularly among the independent companies particularly because of its availability and cost-viability. The ascent in innovation has made the essential gadgets accessible to most people in the general public; subsequently, it is simpler for the business elements to arrive at their planned objective gatherings by facilitating the data on the web based life. This methodology is powerful as most people are probably going to interface with this data. Yilmaz (2011) in Source qualities and publicizing adequacy examines a portion of the perspectives which make a limited time device powerful. As substantiated by the creator, the rising utilization of innovation and joining of data innovation into the administration of business associations has prompted the improvement in the nature of promoting procedures. The creator brings up the rising acclaim of online stages as a decent substitution of the customary techniques in the past utilized by associations in promoting. The creator calls attention to the utilization of organization sites notwithstanding the utilization of online life as a portion of the viable limited time approaches right now utilized by most independent companies in Australia. The significant level of framework and accessibility of stable systems has empowered the independent ventures to communicate with the two its workers just as the customers. The vast majority in the nation approach great cell phones, iPads, PCs, in ternet providers just as great systems. Rather than the fairly costly physical methodologies of showcasing, the accessibility of these assets has utilized online stages and the web based life as the best other options. The creator similarly takes note of that the internet based life has done a great deal in decreasing the expense of promotion for the private companies in Australia. Being moderately little in size, the organizations may do not have the required assets to direct advanced advertising draws near; the internet based life has hence stayed a significant less expensive other option. Examination and Analysis of the articles Through a cautious investigation of the substance, the articles inspected above were picked in an offer to improve the conversation of the picked point. The articles were examined from a greater rundown of articles and were picked principally due to the consistency in the data contained in them. The main article does well in calling attention to a portion of the variables worth considering before picking a promoting technique (Aldrich, 2008). The creator at that point proceeds to talk about the reasons why most business associations presently utilize the online life in the corporate world to upgrade their administration techniques. The progression of realities as showed by the writer makes the article simple to follow. Notwithstanding, the work doesnt comprehensively handle the job that online life has played in showcasing yet does well in making the base which is in this manner investigated through different articles. The subsequent article is progressively significant and the write r does well by starting the conversation with a short diagram of the part of the utilization of web-based social networking in showcasing. The straightforward language and plan of thoughts through painstakingly organized passages goes about as a significant bit of leeway of the article. Then again, the article is generally long which may make its a significant test particularly for perusers not pulled in to long messages. The creator additionally puts together his contentions with respect to discoveries from just chose regions in the nation which may not offer the specific image of web-based social networking use in showcasing. The third article is increasingly illustrative concerning the subject of conversation. The creator digs somewhere down in the part of web-based social networking and frameworks a portion of the reasons with respect to why most private ventures as of now love it with regards to advertising. The principle realities are clarified toward the start of each passage which makes it simple for the perusers to follow the topical stream. Notwithstanding being data, the writers utilization of casual language in certain segments of the content evacuates dullness during perusing henceforth making the article all the more intriguing and similarly engaging. Then again, the article may not be speaking to a more extensive crowd particularly the more established age because of the writers decision of language as certain people incline toward a progressively formal way to deal with correspondence (Homburg, 2009). More or less, every one of the articles are viable in one manner or the other in improving the conversation of the fundamental subject in center. Research Findings In light of the survey of writing notwithstanding the different methodologies used to get data as to the exploration point, various perspectives can be found. In any case, the web based life has stayed urgent in improving showcasing rehearses particularly among private ventures in Australia because of the way that it is practical (Bettman, 2007). A portion of the independent company elements for moment Aerosonde Ltd, Adam Energy and Ace Radio might be confronted with the test of insufficient assets which limits their capacity to investigate other complex alternatives in showcasing. The online networking, which is moderately modest, has in this way made showcasing very reasonable particularly for the business associations which need enough assets (Beane, 2007). Besides, the web based life has upgraded the extent of promoting. Business associations are consequently ready to arrive at a decent number of individuals with the data because of the availability of the showcasing stages (Cox, 2007). The ascent in
Friday, August 21, 2020
Some Funnies
Some Funnies Sorry for the slight gap in entries, this weekend was crazy. Ive got at least four entries that are in various stages of being writ. I dont have a whole ton of time for an awesome entry right now, but I do have some time to share some MIT funnies. These are examples of things that are said/done at MIT in the dorms after midnight. Both are 100% true stories. Shock Monkey I woke up the other morning and, as I do every morning when I first wake up, I reached blindly for my iPod so I could check my e-mail. There was the typical stuff, comments from blogs, e-mails from MIT groups, some personal stuff, but then there was one from Michael Snively sent at 2:30 AM. Hm. I dont remember sending myself an e-mail at 2:30, I wonder what this is? I dont know how many of you are like me in this regard, but mental capacity is not quite at its peak immediately after waking up. Simple tasks like adding the number 9 to 8:00 to figure out when youll be buzzed for hitting snooze seems more like this: Anyway, I click on the e-mail and see this: Subject: To Blog About A Dream Body: Memo to future self: I probably wont remember this in the morning, but I just had a really weird dream and I thought Id write it down so I could blog about it tomorrow. So I was in this lab, with nothing else there but a hundred dollar laptop and a monkey. Except the only thing on the laptop was the Stumble! button. When I pressed the button, the monkey pressed another button in front of him, but I couldnt tell what the monkeys button did. As I kept stumbling, the monkey got more and more agitated, but I couldnt stop stumbling. I couldnt surf any of the websites; I could only stumble through them, and I couldnt bring myself to get off the internet. The monkey was writhing around on the ground, but I kept pressing the button, until finally the monkey pressed his button one last time and stopped moving. I realized Id killed the monkey, but I couldnt stop stumbling. I stumbled faster and faster, until finally I woke up with a start. I wonder what its supposed to mean? Remember how confusing the alarm clock seems? Reading an e-mail like this after just waking up is equivalent seeing something like this on a final exam: I DID NOT remember dreaming this. I DID NOT remember e-mailing myself. The e-mail looked perfectly legit, it was sent from my MIT account, had my proper signature, and for all intents and purposes was sent from me. This confused me for a good 20 seconds as I stared at the screen of my iPod, until I remembered something that made all the pieces click into place. I had checked my e-mail on Jordan 11s computer that night prior and hadnt signed off. HA! Mystery solved! I sent this reply: Remind me never to check my e-mail on your computer again. That poor monkey! /Monkey Story In Talking to a Physics Major Another night, quite late, I was working on a PSET with Michelle 11 and Jon 11 (both of whom Ive blogged about previously) and Rick 09 walked in. He was wearing a Google shirt and on the back it said Im Feeling Lucky! I took the opportunity to be snarky (PSETs will do that to you): Why are you feeling lucky Rick? How lucky are you feeling, really? Really lucky. But Rick, whenever you approach women they run away from you, not towards you. How is that lucky? Simple, they run away from me with a negative velocity. *Slaps Hand on Forehead /Brutal Fizix Joke
Sunday, May 24, 2020
The Awakening By Kate Chopin - 1611 Words
Societal gender roles have traditionally confined women to only domestic duties like cooking, cleaning, and child care. However, some women feel trapped and long for more independence outside of the traditional aspects of womanhood and motherhood. Women who desire the traditional mother-woman lifestyle experience easy societal approval, but other women struggle to find independence and happiness because it goes against societal expectations and can be considered selfish. In The Awakening, Kate Chopin uses the contrasting views and actions surrounding motherhood of Adele Ratignolle and Edna Pontellier to show that women should have the right to choose their own destiny and lifestyle, not based on what society expects of them, but based on their own personal desires and requirements for self-fulfillment. In The Awakening, Adele Ratignolle represents the traditional mother ââ¬âwoman of the late nineteenth century. Mother-women, ââ¬Å"women who idolized their children, worshiped their husbands, and esteemed it a holy privilege to efface themselves as individuals and grow wings as ministering angelsâ⬠(Chopin 8), surrounded Edna Pontellier during her familyââ¬â¢s time in Grand Isle. There, Edna befriended a particular mother-woman named Adele, who has been married for seven years and has three children. Adele is a beautiful and exquisite woman, who enjoys playing with her children, pleasing her husband, and sewing and listening to music in her free time. She is adored by her husband andShow MoreRelatedThe Awakening By Kate Chopin1479 Words à |à 6 PagesKate Chopinââ¬â¢s controversial novel, The Awakening, ignited turmoil because of her blatant disregard of the established 19th century perspective of women upholding strictly maternal and matrimonial responsibilities. E dnaââ¬â¢s candid exploration of the restrictions on women through her liberal behavior in a conservative Victorian society makes her a literary symbol for feminist ideals. Despite denunciation from other people, Edna chooses individuality over conformity through her veering from traditionalRead MoreThe Awakening by Kate Chopin1102 Words à |à 5 Pagesveracity of this quote as both find their independence by boldly exceeding the norm. Their stories were fashioned during a period of great change and both characters are hallmarks of the hope and power women were unearthing at the time. The Awakening by Kate Chopin and Tess of the Dââ¬â¢Urbervilles by Thomas Hardy are novels concerned with the transformation of womenââ¬â¢s roles in society. Their protagonists, Tess and Edna, are not outright feminists, but they are acutely aware of the limitations imposed uponRead MoreThe Awakening By Kate Chopin1919 Words à |à 8 PagesIn the novel, The Awakening, by Kate Chopin, we see ho w much of an importance the men in Ednaââ¬â¢s life serve as a purpose to her awakening. Chopin is known to write stories about women who are unsatisfied with their lives while living in a life that is dominated by men. Other than Edna, the main men characters are typical men of the late 19th century era. Chopin shows how these three men are diverse from one another. The Creole men are Là ©once Pontellier, Ednaââ¬â¢s husband, Robert, Ednaââ¬â¢s mystery man numberRead MoreThe Awakening By Kate Chopin901 Words à |à 4 Pagescandidly. Kate Chopin is honorably amongst this group of authors. Her works divinely portrayed the culture of New Orleans and the lives of Louisiana s Creole and Cajun residents. Chopin openly express her views on sex, marriage, and the injustices of women during the time. Kate Chopinââ¬â¢s novel, The Awakening, best exemplifies the contextual achievement of realism through the rejection of conformity, the exploration of love, and the weight of soci al opinion on individual choices. The Awakening is publishedRead MoreThe Awakening By Kate Chopin1222 Words à |à 5 Pages The Awakening By: Kate Chopin Emely Maldonado AP LIT Period 3 Topic 3 Maldonado 1 Displacement The late 1800s and the 1900s was a prison for womanââ¬â¢s individuality. During this time period, stereotypical views of women were commenced by society and men. In the era that the novel, The Awakening by Kate Chopin was published, the gender roles were graved in stone, men would work to maintain their family and women would adhere to the house-hold duties. Dissatisfaction with theRead MoreThe Awakening By Kate Chopin1193 Words à |à 5 PagesDavian Hart The Awakening By: Kate Chopin AP Literature Topic 3 Hart 1 Over the course of time the male species has always been the gender to attain the more favorable conditions. Numerous cultures heed to the belief that the man is the provider and head of his family. This machismo nature can condition the mind to believe that a man should feel superior to a woman. The continuous cycle of male superiority flows down from father to son subconsciously. Do to this unceasingRead MoreThe Awakening, By Kate Chopin887 Words à |à 4 Pages Feminism has been a term used by many authors and writers for centuries, symbolizing women being able to use freedom the way they want to, not the way others want them to use it. Edna Pontellier, the main character in Kate Chopinââ¬â¢s novel The Awakening, experiences an ââ¬Å"awakeningâ⬠in her life, where she discovers her position in the universe and goes in this direction instead of what others like her husband Leonce tell her to take, similar to the style of feminism. ââ¬Å"In short, Mrs. Pontellier was beg inningRead MoreThe Awakening By Kate Chopin1427 Words à |à 6 Pagessuffering an imposition (Moderata). Throughout history, the inherent inferiority of women to men has often been cited as a way to deter women from becoming an individual and pursuing more in life. This notion is a prevalent issue in The Awakening by Kate Chopin; in which Edna fights to live her own way and is ultimately unable to survive in the cage of society. Not only has this supposed inferiority effected women for generations, but it has created inequality in our society today; especially inRead MoreThe Awakening By Kate Chopin1633 Words à |à 7 Pages1. Title of text (underline novels/plays) authorââ¬â¢s name The Awakening by Kate Chopin 2. Characterization Character Development (a) 1.Edna Pontellier- Edna is the main character of the novel who is married to a businessman. Edna is a dynamic character because at the beginning of the novel, she conforms to society by being the ââ¬Å"perfectâ⬠mother and wife; however, Edna suddenly realizes that she is no longer happy with the way she was living her life and began to become independent only for herRead MoreThe Awakening By Kate Chopin915 Words à |à 4 PagesMany of Kate Chopinââ¬â¢s writings are trademarked by her unique, deliberate word choices. Chopin uses phrases that do not make sense and seem to contradict themselves to get across a point. In two of her stories, ââ¬Å"The Story of an Hourâ⬠and ââ¬Å"The Awakening,â⬠Chopinââ¬â¢s word usage highlights the idea of self-discovery. ââ¬Å"The Awakeningâ⬠and ââ¬Å"The Story of an Hourâ⬠share similar themes. ââ¬Å"The Awakeningâ⬠is the story of a woman in the late 1800s discovering her apathy for her traditional female role as a wife
Wednesday, May 13, 2020
Lenin s Legacy Of The Soviet Revolution - 1531 Words
Leninââ¬â¢s Legacy ââ¬Å"History will not forgive Revolutionaries for procrastinating when they could be victorious today, while they risk losing much tomorrow, in fact, they risk losing everythingâ⬠(Vladimir Lenin. Call to Power). Lenin was a persistent Russian ruler who wished to instill his communist views in Russian society at all costs. He was influential in motivating his followers to rise up and overthrow Russiaââ¬â¢s weak government which lead to the reformation of Russiaââ¬â¢s weak economy. Although Lenin faced opposing forces from the West, he was able to institute a number of reforms which boosted Russiaââ¬â¢s broken economy and led to the transformation of Russia from a war-struck country into an economically stable power, prior to his death. Prior to Lenin coming into power, Russiaââ¬â¢s corrupt government was stuck in a state of war with Germany along with other Western European powers which ultimately led to the revolts of angry Russians due to famine and political issues. The Russo Japanese war began the first Russian revolution in 1905 when Russia suffered a tragic loss on the battlefield (Vladimir Lenin. World History). The Russian loss to Japan forced the government to give up on its expansionist policy resulting in the government losing its followers. This was the most devastating defeat Russia has ever faced to a non-European force and proved Czar Nicholas unfit to rule the nation. To restore order within the society, Czar Nicholas instituted the October Manifesto, whichShow MoreRelatedThe Communist And The Fascist Ideology Present At The Two Extreme Ends On The Political Spectrum2018 Words à |à 9 PagesLenin VS Mussolini The communist and the fascist ideology present at the two extreme ends on the political spectrum, yet the two apparently different political systems shared many intrinsic similarities. Mussolini and Lenin, they were both worth comparison in that they used somewhat similar but still distinct methods to run their countries. Form a historical point of view, Lenin was more successful, for the reason that his economy and agriculture program was more useful to people, some violence andRead MoreJoseph Stalin s Impact On The World1508 Words à |à 7 PagesNicholas II and made a lot of good things happen to the Russian Empire. Stalin industrialized the nation. He made it sufficiently solid to survive a Fascist attack. He likewise figured out how to make the war a partnership between the West and the Soviet Union. This implied that post-war, numerous thoughts the West had imparted to Fascism were tossed out. These are good things he did, but it only gets worse because Stalin did 21 million ti mes more bad than good. He tricked, lied, killed, manipulatedRead MorePuse, Mark Diego C. Pol Eco Current World Issues T-Th1591 Words à |à 7 Pagestake a look on how the state was formed along with its ideologies and principles as a governing body, and what caused its downfall and demise as a state. Once established, we can hypothesize the legacy left by the USSR be it good or bad. A. A history on the USSR on how it came to be. The History of the Soviet Union begins with the end of the Tsardom of Russia, for hundreds of years Russia was ruled by a series of Monarchs known as Tsar who wielded absolute authority over the country. But, during theRead MoreOne of the most crucial events in the twentieth century was the fall of the Soviet Union also known1100 Words à |à 5 Pagescentury was the fall of the Soviet Union also known as the USSR (Union of Soviet Socialist Republics). The creation of the USSR was mainly the upshot from the leadership of Vladimir Lenin Ilyich in 1917. He was born in Simbirsk later known as Ulyanovsk in 1870. The USSR, during its prime, was one of the strongest most influential superpowers. Post World War II the United States and the USSR were the only superpowers left on the planet. The collapse of the Soviet empire came around 1989 to 1991Read MoreEssay #2. After The Russian Revolution, There Was A Lot1229 Words à |à 5 PagesEssay #2 After the Russian Revolution, there was a lot of confusion on how to establish institutions strong enough to rebuild and hold the state and society together. An issue with Marxism is that it is is not a theory of governance, rather a theory of how to bring a socialist regime into powerââ¬âhence explaining the lack of guidance. At this time, Lenin took control. But after his death, the Russians were once again faced with appointing a leader to direct them. The domestic and international conditionsRead MoreLenin Laid the Foundation for Stalinism Essay2452 Words à |à 10 Pages In order to establish whether Lenin did, indeed lay the foundation for Stalinism, two questions need to be answered; what were Leninââ¬â¢s plans for the future of Russia and what exactly gave rise to Stalinism? Official Soviet historians of the time at which Stalin was in power would have argued that each one answers the other. Similarly, Western historians saw Lenin as an important figure in the establishment of Stalinââ¬â¢s socialist state. This can be partly attributed to theRead MoreModern American s View On Vladimir Lenin s Economic Policies1125 Words à |à 5 Pages Modern American s View on Vladimir Lenin s Economic Policies Founding the Russian Communist Party and leading the Bolshevik Revolution in 1917, Vladimir Lenin was one of the most essential and controversial figures in the 20th century. Deeply believing in Marxism, Lenin devoted his Initiated for the undertaking of communism in Russia. However, although undoubtedly a great leader who made a significant contribution in politics and philosophy to the world, Lenin made considerable bad judgmentsRead MoreLenin13422 Words à |à 54 PagesVladimir Ilyich Lenin Ãâà »Ã °Ã ´Ã ¸Ã ¼Ã ¸Ã'⬠ÃËà »Ã'Å'à ¸Ã'â¡ ÃâºÃ µÃ ½Ã ¸Ã ½ | | Lenin in 1920 | Chairman of the Council of People s Commissars of the Soviet Union (Premier of the Soviet Union) | In office 30 December 1922à ââ¬â 21 January 1924 | Preceded by | Position created | Succeeded by | Alexei Rykov | Chairman of the Council of People s Commissars of the Russian SFSR | In office 8 November 1917à ââ¬â 21 January 1924 | Preceded by | Position created | Succeeded by | Alexei Rykov | Member of the PolitburoRead MoreThe Rise And Fall Of The Communist Party1530 Words à |à 7 Pagesauthority as time passed to make all party member appointments. By this point, not even Lenin could take back control (Joseph Stalin Biography). After Lenin s death in 1924, Stalin managed to climb the ladder and beat the competition for control of the party (Stalin). Stalin s policy of isolationism began after World War II, when he was convinced that Ally hostility would lead to invasion of the Soviet Union. In the late 1940s, Stalin established communist regimes in much of Eastern EuropeRead MoreStalin s Power Of The Communist Party Essay3755 Words à |à 16 Pagesfaced, World War II, and through the beginning of one of the most tense periods of modern history, the Cold War. It is easy however, to get lost in the legacy Stalin left behind, and forget about the events leading up to his total control over the communist regime of the 20th century Russia. During his reign as the near absolute ruler of the Soviet Union, Stalin incited a plethora of atrocities, notably the manufactured famines, purges, and labour camp imprisonments. Stalin was able to be the primary
Wednesday, May 6, 2020
Poverty Minimum Wage and Economical Unstable Childhood Free Essays
College Essay Carlos Urias 9/1/2011 Robert Leighton once stated, ââ¬Å"Poverty keeps the vision pure. â⬠I fully understand and can relate to this quote as it pertains to my life. Exposure to economic difficulties at a young age helped shape the person I would grow up to be. We will write a custom essay sample on Poverty: Minimum Wage and Economical Unstable Childhood or any similar topic only for you Order Now Being economically troubled is an experience that has changed my character and has stimulated the decisions I have made throughout my life. Through the hardships of living an economical unstable childhood I have learned to embrace opportunities, the importance of perseverance, and become a charitable person. The cause for being at an economic disadvantage can be traced back to when my parents immigrated to the United States. Because my parents were immigrants, they had no documentation and had to work vigorous hours for minimum wage. They moved into California, and this is where I was born. We lived in a poor neighborhood and there was only enough money for the things we needed and not for what we wanted. Rising rent prices and minimum salaries were among the contributing factors that led to my family struggling to stay economically stable. My parents had to each get multiple jobs to try and make us enough money to proceed on living here. The lack of money resulted in problems at home, work, and the neighborhood. Alongside my family, although just a child, I also suffered the consequences of living in these conditions. Because we were living like this, I witnessed a lot of violence, hate, and many hard times. I understood that we were at a disadvantage and learned from my experiences as I witnessed how my family tried to cope with all the problems. Although there was not any money to throw around, I learned many valuable lessons from my family, my environment, and the situations we were living in. As a result of having an economically unstable childhood, I have learned to embrace opportunities. When my family and I were living under the economic pressures of California, it was clear to me that we did not have opportunities of any kind open to us. It is because of this that we were living the way we were. As I grew older, I realized that there were so many opportunities for me and the options were limitless. Because I remember the hard times in which I came from, I do not take this for granted and take advantage of every beneficial opportunity that is presented to me. My experiences taught me that not everyone has opportunities available to them and the ones that do should be thankful and not take it for granted. These hard economic times led me to see the importance of having perseverance. I admired the way my parents would work so hard day after day and their hopes and dreams would never be crushed. I realized that you cannot give up on what you desire the most. As a child, I always told myself I would pull us out off the hard times; however, I had no idea how. I know now that the key is perseverance. I also understand now that having perseverance helps you keep pushing forward and makes you never question your goal, but instead keep striving for it. Without perseverance we never would have gotten through the economic troubles and the conflicts that came along with that. Lastly, being economically unstable has shaped me into the charitable person I am today. As a kid I came to understand that many people did not have everything they wanted and that they too faced extremely hard times and struggled to live. Because I can relate, I have sympathy towards everyone who lives in those conditions, or even worse than that. My childhood showed me that there are some things you have no control over and sometimes living in poverty is one of them. For this reason, I try to help as much as I can and extend my hand to those who need it the most. Living in an economically unstable childhood helped me to appreciate opportunities that may rise, realize the importance of perseverance, and become a helpful person towards the needy. Taking into consideration that not everyone has the opportunities that are available to me, I take advantage of them. Perseverance is needed to harness these opportunities and make the most out of them. Because I know where I have come from, I know where I am going. How to cite Poverty: Minimum Wage and Economical Unstable Childhood, Essay examples
Tuesday, May 5, 2020
Sustainable and Operations for Climate- MyAssignmenthelp.com
Question: Discuss about theSustainable and Operations Destinationsfor Climate. Answer: Introduction Climate is essential things that influence tourism. Changes in global climate are outside the capacity to control of the tourism business and may have clearing results for some present vacationer objectives and furthermore for spots thinking about commitment in tourism. Understanding how air and atmosphere affect tourism is imperative if we have to evaluate the impacts of ecological change on tourism. Sustainable Development Around 2006 the assembly of Andaman and Nicobar was concerned to apportion the float, administer and use the shoreline front resources practically (Reddy, 2007). They anticipated that would support the natural, efficient progression by mainstreaming security of biodiversity into key valuable divisions. They rushed to overhaul adjacent capacities to screen arrive and monetarily utilise globally significant biodiversity resources in the three key regions like agriculture, tourism and fisheries. Carrying Capacity and Destination Scenario The passing on the point of confinement of this place is around 5.6 million whereas some visitors were going to are 6.4 million (Cal, Harake, Hassan, Struck, 2015). So there is a slight differentiation in these numbers. To the extent objective headway circumstances, this place pulls in vacationers to the extent visitors taken after by shorelines see, spared limestone caves, timberlands and coral sights. Coral regions were given weight of sixty-five percent of guests, social and recorded tourism things eighty-five percent for the general history The Triple Bottom Line Environmental viability by sagaciously using the normal resources, sparing the sea life and diminishing the transmission of waste risks in the earth (Malik, Murty, Rai, 2006). Social supportability by focusing on and keeping up regularly accommodating relations with their guests and their particular gathering Economic viability by focusing on tourism redesign since that is the strategies for their economic progression Comparing of Two Destinations (Syria and Andaman and Nicobar) The two destination Syria and Andaman have taken one is encountering war, and another is India's seven union territory. Syria comes beyond the Unsustainable mass tourism due to its low economy, non-regulated and civil war but once at a time it was one of the gorgeous tourism destination with high heritage culture. But at present, the war has broken down the triple bottom line of tourism (Whitman, 2017). Before the war, about 6 billion tourists went to Syria which increased the revenue of the country. But at the time of war, hotel rooms proposed for outside vacationers have been controlled by uprooted individuals and the consequence of the normal war isolate the pay of the country. Comparing to Syria, Andaman and Nicobar Island has sustainable mass tourism due to its economy focus, tourism investment for further development and highly regulated. The place is gorgeous due to its beauty of nature, sea animal and the active volcano. Beside of this, the visitor's visits there throws rubbish which is damaging the sea life. Beside this when outside associations started contributing too much the close-by associations started persisting because remote direct hypothesis kept the family unit wander. Conclusion The security of the tourism and travel industry have been a vital update for tourism industry however disastrously various industry pioneers gave lip-organization to security issues as opposed to going up against the issue. This may incite amazing economic adversities later on for some tourism and travel objectives. References Cal, M., Harake, W., Hassan, F., Struck, C. (2015). THE IMPACT OF THE SYRIAN CONFLICT ON LEBANESE TRADE.WORLD BANK MIDDLE EAST AND NORTH AFRICA REGION. Retrieved from https://documents.worldbank.org/curated/en/908431468174247241/pdf/96087-WP-P148051-PUBLIC-Box391435B-Syria-Trade-Report.pdf Malik, J., Murty, C., Rai, D. (2006). Landscape Changes in the Andaman and Nicobar Islands (India) after the December 2004 Great Sumatra Earthquake and Indian Ocean Tsunami. Retrieved from https://www.iitk.ac.in/nicee/RP/2006_Landscape_EQSpectra.pdf Reddy, S. (2007). Mega Tourism in Andaman and Nicobar Islands: Some Concerns.Centre Of Social Medicine And Community Health, School Of Social Sciences,21(3). Retrieved from https://www.jnu.ac.in/Faculty/sreddy/Mega%20Tourism%20in%20Andaman%20and%20Nicobar%20Islands.pdf Whitman, S. (2017).World Poverty(1st ed.). Retrieved from https://books.google.co.in/books?id=fk4QHyTMhQkCpg=PA146lpg=PA146dq=syria+tourism+pdfsource=blots=9groNX-9Zusig=nq4A4qcPAqEHHsL249FJ1O70U0whl=ensa=Xved=0ahUKEwii9LjB6vvTAhVKPo8KHSrgBLA4ChDoAQhRMAg#v=onepageq=syria%20tourism%20pdff=false
Thursday, April 2, 2020
Anorexia Nervosa Essays (1539 words) - Eating Disorders, Psychiatry
Anorexia Nervosa In American society women are given the message starting from a very young age that in order to be successful and happy, they must be thin. Eating disorders are on the rise, it is not surprising given the value which society places on being thin. Television and magazine advertising that show the image of glamorous and thin model are everywhere. Thousands of teenage girls are starving themselves daily in an effort to attain what the fashion industry considers to be the "ideal" figure. An average female model weighs 23% less than the recommended weight for a woman. Maintaining a weight 20% below your expected body weight fits the criteria for the emotional eating disorder known as anorexia (Pirke & Ploog, 1984). According to medical weight standards, most models fit into the category of being anorexic (Garfinkle & Garner, 1990). Physicians now believe that anorexia has existed for at least 300 years (Pirke & Ploog, 1984). It was however only about one hundred years ago that Professor Ernest Lasegue of the University of Paris finally identified anorexia as an illness (Pirke & Ploog, 1984). The term "anorexia nervosa" literally means nervous lose of appetite. Most researchers and physicians agree that the number of patients with this life threatening disease is increasing at an alarming rate. Garfinkle & Garner define anorexia as "an emotional disorder characterized by an intense fear of becoming obese, lack of self-esteem and distorted body image which results in self-induced starvation" (1990). The development of this disease generally peaks between the age of 14 to 18 but can occur later in life and is not uncommon to see it in women in to their early 40's. Recent estimates suggest that 1% of American girls between this age span will develop anorexia to some degree (Garfinkle & Garner, 1990). It has also propagated in many college campuses, and it is spreading. Studies have shown that nearly 20% of college women may suffer from anorexia or bulimia (Pirke & Ploog, 1984). The disease develops slowly over a period of months to years during which the sufferer changes her eating patterns to a very restricted diet. As stated previously above, an anorexic is diagnosed by having a body weight 20% below the expected body weight of a healthy person at the same age and height of the eating disorder patient. The anorexic may often becomes frightened of gaining weight and even of food itself. The patient may feel fat, even though their body weight is well below the normal weight for their height. Some may even feel they do not deserve pleasure out of life and will deprive themselves of situations offering pleasure, including eating. This fear becomes so difficult to manage that the sufferer will gradually isolate themselves from other people and social activities. This happens so the sufferer can continue the exhausting anorexic behaviors. Although the mortality rate is high (30% of anorexics will eventually die from the disease), approximately one third are able overcome the disease with psychiatric help (Pirke & Ploog, 1984). Warning signs to look for in someone you suspect of anorexia. Physical signs are intolerance of cold due to the absence of the body's natural insulator (fat), dizziness and fainting spells, dry skin, loss of muscle, and the most obvious, a weight loss of about fifteen percent. There are also behavioral changes in a person when they becomes anorexic including restricted food intake, odd food rituals, an increased fear of food, hyperactivity, dressing in layers, and regular weighing. Some "odd food rituals" include things like cutting food into small pieces, counting bites or even talking to their food. Anorexics are not repelled or revolted by food, in fact their minds are often dominated by thoughts of food. While the exact cause of anorexia is still unknown, a combination of psychological, environmental, and physiological factors is associated with the development of this disorder (Cove, 1998). The most common cause of anorexia in a woman is an incorrect self-perception of her weight. Anorexics feel as if they are heavier than the others around them, and believe the quickest way to lose weight is to simply stop eating. Anorexia survivor Nanett Pearson (Miss Utah 1996) explains "I became obsessed with body image. I kept journals and in one pathetic passage I described how I went for sixteen days on water, and only about two glasses a day" (1998). At first, this method may seem to work and the subject loses weight, but their bodies will soon adjust to the lack of food it learns to use the
Sunday, March 8, 2020
International trade in Nigeria
International trade in Nigeria Introduction Globalization refers to ââ¬Å"the growing interdependence of countries resulting from the increasing integration of trade, finance, people, and ideas in one global marketplaceâ⬠(Bigman 2002, p. 7).Advertising We will write a custom essay sample on International trade in Nigeria specifically for you for only $16.05 $11/page Learn More This paper examines the effect of globalization on Nigeriaââ¬â¢s participation in international trade. In particular, it will focus on how trade liberalization, protectionism, BWIs, and MNEs have influenced Nigeriaââ¬â¢s imports and exports. The paper will argue that globalization has had more negative than positive effects on international trade in Nigeria. Impact of Global Governance Agencies The World Trade Organization (WTO) is one of the agencies that regulate international trade. WTOââ¬â¢s most-favored-nation policy aims at reducing discrimination among trading partners in the international mar ket (Muhammad 2007, pp. 173-182). Similarly, its national treatment policy encourages countries to treat locally produced goods and imports equally (WTO 2013). Nonetheless, these policies do not always benefit developing countries because they are often manipulated to favor developed countries (Action Aid 2004). Consequently, the WTO provides special considerations to some developing countries to enable them to improve their competitiveness (Raghavan 2013). These include ââ¬Å"longer time to implement agreements, support to build infrastructure, and measures to increase trading opportunitiesâ⬠(Frieden Lake 2000, p. 2110. For instance, the Cotonou Agreement that was adopted in 2003 allowed Nigeria to export its commodities to the EU without paying any tariff for five years (Michael 2005, pp. 1-200). The resulting increase in exportation enabled Nigeria to maintain an average GDP growth rate of 6.82% in the last seven years. The structural adjustment programs introduced by the World Bank in Nigeriaââ¬â¢s agricultural sector have partly contributed to the reduction in production in the industry. For instance, the removal of subsidies to farmers has increased the cost of production in Nigeria (Dayo, Nkonya and Pender 2009, pp. 1-48). By contrast, the WTO has failed to eliminate or even reduce the subsidies paid to farmers in developed countries (Walker 2011). These subsidies lower the cost of production in the agricultural sectors of developed countries (UNDP 2005). As a result, developed countries overproduce agricultural commodities such as rice, which they sell at low prices in overseas markets. This reduces the demand for Nigeriaââ¬â¢s agricultural commodities such as cotton, which are relatively expensive due to high production costs (CID Harvard University 2013).Advertising Looking for essay on business economics? Let's see if we can help you! Get your first paper with 15% OFF Learn More Liberalization of exchange rate has led to a systematic reduction of the value of Nigeriaââ¬â¢s currency against the dollar. This has led to increased prices of imported machines that Nigerian farmers and industrialists need in order to add value to their products. In this regard, the BWIs should be reformed so that they can benefit developing countries such as Nigeria. In particular, the IMF and the World Bank should control volatility of exchange rates in international markets (Nayyar 2001, pp. 1-2). A stable exchange rate will enable Nigeria to import machinery at competitive prices in order to increase production in its agricultural and manufacturing sectors. Access to Foreign Markets and Barriers to Free Trade In 1970s, Nigeria focused on implementing protectionist policies in order to protect its nascent industries and to improve its balance of payment. This included a general ban on the importation of non-essential goods, high import tariffs, and import quotas (Dappa Otuya 2012, pp. 23-45). However, sim ilar trade barriers imposed on Nigeria by Britain limited Nigeriaââ¬â¢s ability to access several European markets (Dappa Otuya 2012, pp. 23-45). Nonetheless, Nigeria had a trade surplus with most western countries due to the increase in its oil exports. Nigeriaââ¬â¢s oil exports increased because most western countries had reduced their import duties on imported crude oil (Akinlo 2012, pp. 165-174). Nigeria began to liberalize its economy in 1986 by removing tariff and non-tariff barriers to trade. During the liberalization period, Nigeriaââ¬â¢s agricultural exports such as cocoa and palm kernel grew by between 20 and 30 percent (Ogwumike Olukayode, pp. 89-95). This is because the depreciation of Nigeriaââ¬â¢s currency after the adoption of a flexible exchange rate improved the competitiveness of its commodities in overseas market. Additionally, the countryââ¬â¢s GDP increased from -2 percent in 1985 (before trade liberalization) to 5.5 percent during the SAP perio d (1986-1993). The increase in economic growth was attributed to the raise in Nigeriaââ¬â¢s agricultural exports to Europe and Asian countries. Moreover, Nigeria had a comparative advantage in oil production in 1980s and early 1990s (Miller 2008, p. 71). In this regard, trade liberalization enabled the country to export its oil to developed countries such as the USA at a more competitive price. However, the improvement in international trade in Nigeria was just a temporary occurrence. In 1990s, Nigeria lacked the technology that it needed in order to add value to its agricultural products and to reduce the costs of its exports (Akinbobola 2001, p. 12). Consequently, its commodities could not compete with those from Asian countries such as India. Additionally, importation of cheap agricultural products such as rice increased tremendously.Advertising We will write a custom essay sample on International trade in Nigeria specifically for you for only $16.05 $11/page Learn More During the 1997-1998 Asian financial crisis, most Asian countries banned textile imports from Nigeria, thereby reducing the countryââ¬â¢s cotton production by nearly 40% (Dappa Otuya 2012, pp. 23-45). The decline in production in the cotton sector led to increased poverty and unemployment in the country. Nigeriaââ¬â¢s earnings from agricultural exports have been declining steadily over the years due to high competition in overseas markets. Though exports for some crops such as cocoa have increased since 1990, their earnings have reduced significantly. This is because major export markets such as the European Union have consistently set high import duties (IMF 2001). Following the discovery of oil in countries such as Mexico and fluctuations in international oil prices, Nigeria lost its comparative advantage in oil production. Moreover, persistent decline in oil prices has significantly reduced the countryââ¬â¢s earnings from oil exports. Consequently, N igeriaââ¬â¢s balance of payment has been declining steadily since 1990. Additionally, unemployment rate has increased considerably, thereby forcing its citizens to search for jobs in European and Asian countries. In this regard, an international economic council should be established to oversee globalization (Nayyar 2001, pp. 1-2). In particular, the council should focus on removing tariff and non-tariff barriers to trade, as well as, providing financial and technical assistance to developing countries such as Nigeria to improve their competitiveness in production. Impact of Bilateral and Regional Agreements on International Trade Bilateral and regional agreements improve the export positions of their member countries by providing a large market for their products. The agreements usually promote free movement of goods through removal or reduction of import taxes. Additionally, they promote free movement of persons through removal of migration permits (Phillips Weaver 2011, p. 67 ). It is against this backdrop that Nigeria joined ECOWAS in 1975. ECOWAS is an economic bloc that consists of 15 West African countries. Joining ECOWAS has enabled Nigeria to increase its export of raw materials such as rubber. This is because such products are subject to a low import duty of only 5 percent (ECOWAS Commission 2010). However, final consumption goods are subject to a 20 percent import duty in the region. This has limited Nigeriaââ¬â¢s ability to export its final goods to most ECOWAS member countries. Bilateral and regional trade agreements usually tend to undermine the goals of multilateral agreements. This is because some of their principles are not consistent with those of multilateral agreements (Reuvid Sherlock 2011, p. 324). For example, the tariffs proposed in a particular regional trade bloc can be different from those proposed by GATT.Advertising Looking for essay on business economics? Let's see if we can help you! Get your first paper with 15% OFF Learn More Moreover, interest groups usually develop within bilateral and regional trade agreements, thereby discouraging their members from conforming to multilateral agreements (Reuvid Sherlock 2011, p. 325). In Nigeria, the revision of the common external tariff for the ECOWAS trading bloc led to the adoption of special taxes, which were as high as 50 percent to protect the members from extreme competition from other trading blocs (ECOWAS Commission 2010). Nonetheless, the high taxes undermined Nigeriaââ¬â¢s commitment to ensure free trade as required by the WTO. The high tax increased the prices of imported consumer goods in Nigeria, thereby lowering consumption of imports. Countries that enter bilateral agreements should align their principles to those of the WTO in order to avoid breaching multilateral trade agreements (Reuvid Sherlock 2011, p. 327). Powerful Multinational Enterprises Multinational enterprises promote international trade and export positions of developing countries through technological transfers and provision of ready market for their raw materials (Oghenerobaro Robaro 2008, pp. 12-16). MNEs such as Shell dominate the exploration and distribution of oil in Nigeria. These companies introduced advanced technologies for drilling oil, thereby increasing Nigeriaââ¬â¢s oil exports (Akinlo 2012, pp. 165-174). Multinational enterprises in Nigeriaââ¬â¢s oil industry have also contributed to environmental degradation through oil spillage. Most of the spillage accidents occur due to the negligence of oil companies such as Shell (Steiner 2008, pp. 131-141). Oil spillage has led to the contamination of over 50,000 square kilometers of farmland in Niger Delta (Kadafa, Zakaria Othman 2012, pp. 10-30). Consequently, over 20 million Nigerian famers have been rendered jobless. Furthermore, oil spillage has led to the destruction of mangrove forests in the delta, thereby reducing Nigeriaââ¬â¢s timber exports (Zabbey 2005, pp. 7-10). In this regard, t he government of Nigeria should strengthen regulation in the oil industry so that MNEs can engage in ethical behaviors. Conclusion The aim of this paper was to examine the extent to which globalization has enhanced international trade in Nigeria. Initially, globalization led to increased exportation and balance of payment surplus in Nigeria. However, globalization also exposed Nigeriaââ¬â¢s products to high competition in the international market. Additionally, fluctuation of commodity prices and Nigeriaââ¬â¢s inability to add value to its products led to the loss of the competitiveness of its exports. Consequently, Nigeriaââ¬â¢s exports have declined and its balance of payment has worsened. Additionally, poverty and unemployment continue to rise in the country. Thus, globalization has had more negative than positive effects on international trade in Nigeria. References Action Aid 2004, WTO Unfair to Developing Countries, actionaid.org.uk/1323/the-wto-delivers-an-unfair-dea l-for-poor-countries.html. Akinbobola, A 2001, Globalization and its Impact on the Emergent States, Zedek, Lagos. Akinlo, A 2012, ââ¬ËHow Important is Oil in Nigeriaââ¬â¢s Economic Growthââ¬â¢, Journal of Sustainable Development, vol. 5 no. 4, pp. 165-174. Bigman, D 2002, Globalization and the Developing Countries, Oxford University Press, London. CID Harvard University 2013, Textiles and Clothing Summary, cid.harvard.edu/cidtrade/issues/textiles.html. Dappa, T Otuya, B 2012, ââ¬ËThe Effects of Globalization on Developing Economies: The Nigerian Experienceââ¬â¢, African Journal of Philosophy, vol. 3 no. 1, pp. 23-45. Dayo, P, Nkonya, E Pender, J 2009, Constraints to Increasing Agricultural Productivity in Nigeria, International Food Policy Research Institute, Abuja. ECOWAS Commission 2010, The ECOWAS Common External Tariff and Regional Integration, viewed on interreseaux.org/img/pdf. Frieden, J Lake, D 2000, International Political Economy, Palgrave, London. IMF 20 01, Global Trade Liberalization and the Developing Countries, imf.org/external/np/exr/ib/2001/110801.html. Kadafa, A, Zakaria, M Othman, F 2012, ââ¬ËOil Spillage and Pollution in Nigeria: Organizational Management and Institutional Frameworkââ¬â¢, Journal of Environmental and Earth Science, vol. 12 no. 4, pp. 10-30. Michael, L 2005, Partnership Agreement ACP-EU, European Commission, Luxembourg. Miller, R 2008, International Political Economy, McGraw-Hill, New York. Muhammad, N 2007, ââ¬ËMultilateral Trade Regime: Conflicts between Developed and Developing Nationsââ¬â¢, International Review of Business Research Papers, vol. 3 no. 4, pp. 173-182. Nayyar, D 2001, Reform the UN and the Bretton Woods Institutions, WIDER, Helsinki. Oghenerobaro, M Robaro, A 2008, ââ¬ËThe Impact of Globalization of Entrepreneurship Development in Developing Economiesââ¬â¢, Journal of African Economies, vol. 4 no. 2, pp. 12-16. Ogwumike, F Olukayode, E 2012, ââ¬ËGlobalization and Eco nomic Growth in Nigeria: A Multidimensional Analysisââ¬â¢, Pakistan Journal of Social Sciences, vol. 9 no. 2, pp. 89-95. Phillips, N Weaver, C 2011, International Political Economy, John Wiley and Sons, New York. Raghavan, C 2013, Globalization Needs International Regulations, twnside.org.sg/title/regu-cn.html. Reuvid, J Sherlock, J 2011, International Trade, Routledge, New York. Steiner, R 2008, ââ¬ËDouble Standards? International Standards to Prevent and Control Pipeline Oil Spills, Compared with Shell Practices in Nigeriaââ¬â¢, Journal of Environmental and Earth Science, vol. 8 no. 2, pp. 131-141. UNDP 2005, High Trade Policies Damaging Growth Prospects in Developing Countries, undp.bg/uploads/documents/1196642en.pdf. Walker, A 2011, The WTO Has Failed Developing Nations, guardian.co.ke/development/wto-fails-developing-countries. WTO 2013, Special and Preferential Treatment for Developing Countries, wto.org/english/tratop-edevel-especial-differential-provisions-e.html. Zabbey, N 2005, ââ¬ËImpacts of Extractive Industries on the Biodiversity of the Niger Delta Regionââ¬â¢, Journal of Environmental and Earth Science, vol. 3 no. 1, pp. 7-10.
Thursday, February 20, 2020
Major Project Essay Example | Topics and Well Written Essays - 3750 words - 2
Major Project - Essay Example Republicans, democrats and independents feeling pressures of holding on to their current bargaining power position started a movement, in which Wisconsin is the epicenter. It began with economic issues. The person who started the revolution is Gov. Scott Walker. Walker proposed that state workers contribute more to their pension and health-care benefits. Teachers started calling in sick. Schools closed. Demonstrators massed at the capitol. Democratic senators fled the state to paralyze the Legislature. Wisconsin public sector developed the main argument as it capitulated and claimed they were only protesting one part of the bill, the part about collective-bargaining rights. The Democratic Party is pouring money and anger into the fight, recognizing the threat of union power. Public Employee Unions Preliminary It is necessary to know the relevant underlying roles of collective bargaining power in a civil society. Freedom of association the right to bargain collectively, places the Uni ted States out of the norm with established international human-rights principles. Historically, collective bargaining served to increase consumer purchasing power, assures a voice in the workplace, and provides checks and balances in society. Collective bargaining in the public sector that endorses models incorporates alternative dispute-resolution mechanisms is a means to protect the public interest. Collective bargaining for unions will consider the core institution in society. The function of collective bargaining does not necessary need updated to match wording for the 21st century. Presently, the public-policy debate about public-sector unionism and collective bargaining in the United States has triggered a debate in the United States. At the center of the debate is the question suggesting that public employee unions have contributed to this crisis through the pay and benefits he/she have negotiated for public employees. Connected to this is the employer through a role of the government as a taxing authority as well as a player in providing public services. These claims will continue to be in conflict with one another. When private sector and public sector try to compare in benefits in the past the government has not shown the diligence which proves, that the public sector pays more attention to such matters. Objectives of this paper is the identify innovations that can improve public sector collective bargaining power and how that may affect parts of the public sector. Many of these problems are equally prevalent in states with and without collective bargaining and for unionized and non-unionized employees. History Collective bargaining, the most recent plan, developed during the 1930s, addressed the imbalance of power between employers and employees. Passed in 1935, this act called the "Wagner Act," which created a system of collective bargaining that leveled the playing field and provided a structure that reduced labor strife and unrest. This law gave most workers in the private sector the right to form unions, bargain, and strike. Collective bargaining is a type of negotiation that uses employees to work with employers. Worker representative's approach the employer and attempt to negotiate a contract that both sides can potential agree. Issues covered are hours of
Wednesday, February 5, 2020
Companies in GCC Research Paper Example | Topics and Well Written Essays - 1000 words
Companies in GCC - Research Paper Example The organizational structure of Etisalat is multilevel in nature. On the first level, Etisalat has senior management members like Ahmad Abdulkarim Julfar, CEO of Etisalat Group, Eissa Mohamed Al Suwaidi, Chairman of Etisalat Group, Khalaf Bin Ahmed Al Otaiba, Vice Chairman of Etisalat Group and 8 other directors. They look after the whole Etisalat group. The next level has other senior management members like CFO, CIO, Chief Internal Auditor, Chief Legal and Regulatory Officers etc (Baligh, 2006). They are a specialist who is looking for individual department. Thus the organizational structure of Etisalat Group is hierarchical in nature. Here the specialist officers like CFO, CIO etc. has to report to their senior authority that is CEO. Thus the members mainly communicate to their immediate superiors and to their immediate subordinates. This helps reduce the communication overhead by limiting information flow.Etisalat was faced with many management problems in recent years. In 2011, the management team of Etisalat underwent major restructuring including change of companyââ¬â¢s chairman Mohammed Omran. During that time Etisalat promoted one of the existing directors to the role of chairman. Again in 2012, Etisalat appointed Ahmed Al Awadi as the chief financial officer for in UAE operations in its management reshuffle. The reshuffle came after many setbacks for Etisalat like intense competition which they face in UAE, failure to acquire rival operator Zain and its exit from India market. Ã
Monday, January 27, 2020
Milling machines: An introduction
Milling machines: An introduction Chapter I 1.1 Introduction The ability of any nation to manufacture is essential but to deploy that ability in a certain nation is the trick as every nation defers from one another, so in order to enhance Arab nation ability to manufacture we will provide a better cheaper design for a CNC milling machine. The Primary Objective of This Project is to present and develop a prototype for a substitution of the expensive hard to acquire machining facility for the Middle East industrial society; these machining facilities include the regular Turning, Drilling, Shaping, Milling, and Grinding Machines. Our primary survey concluded that there always must be a turning machine beside a milling machine, but a milling machine (CNC milling machine) can include the rest of processes required within its operation to a good degree and the turning operation to an acceptable degree. So we chose the milling machine as our initial model to undergo our optimization plan. Therefore our Primary objective of choice is to Design a Basic Three Axis CNC milling machine. Also to manufacture a working Prototype for this machine fabricated all with nationally available components in order to minimize its cost but maintains an acceptable level of accuracy to suite a Computer Numerical Control Machine. Another Thing that we must point out is that in order to accomplish this project we need more than one trial to find the suitable combination of components and specs to pursue in order that this machine comes to light. 1.2 Proposed Approach A new approach is needed that approach is based upon the 2010-2015 World Outlook for Computer Numerical Controls [1]. The results of that survey were mainly based upon word wide research includes Middle East and North Africa. These results showed that any machine tool required for the Egyptian industrial society could be one of the following: Turning, Drilling, Shaping, Milling, and Grinding. So the first step was to pick up the operation over which this thesis will focus on. Milling can include in its operation: Drilling, Shaping, and Grinding. And might contain Turning under certain conditions. So milling was chosen. And this result might be verified by the fact that 90% of the working machine tools in the field of traditional CNC machines are either Milling or Turning Centers. Now we will compare different configuration of milling machines Case 1: A Universal Milling Machine. Case 2: A regular CNC Milling Machine. Case 3: Gantry style CNC Milling Machine. Case 1: A Universal Milling Machine From Cost point of view: Cost is high because of the usage of large material to build the bulky parts of the machine tool might be as high as a CNC Milling Machine From Design point of view: Design level might be considered low compared with the design required in both the regular CNC machine and our machine. From Accuracy Point of view: Accuracy is very low compared to the other two cases but could be difficulty approached with the use of very skilled labor and with high cost. Case 2: A regular CNC machine From Cost Point of view: Cost is much higher because of the usage of both large material amounts with high machining grade as will as the cost of the motion control equipments. From Design Point of view: Design is better than the first case for every part is designed to enhance the entire machining operation. From Accuracy Point of view: Attained accuracy is very high due to perfect guide ways assisted by ball screws along with feed back control. Case 3: A gantry CNC milling machine From Cost Point of view: Cost is mush less than the later case and might be less that the first case as the entire machine is only build from a metal sheet and some Bars. From Design Point of view: Design is much sophisticated than the first and the second case as the design is optimized to hold the predetermined forces as a light weight structure. From Accuracy Point of view: Accuracy is for sure less than the second case but higher than the first case as there is no feedback control technique employed. Discussion of results: For case 1: Universal Milling Machine Our results dont imply that the use of that machine is not appropriate but we only mean that each application requires a certain machine and also each goal. The cost is very high in EGYPT as almost all of them is imported but not made in EGYPT but there maintenance and overhauling is available domestically. For Case 2: three axis CNC milling machine Vertical Column type. The usage of this type of machines in any workshop requires a great deal of money so most of the manufacturers comprises between money and accuracy. The cost is definitely much higher as there is almost no one building or even providing maintenance for these machines in EGYPT. For Case 3: Gantry style CNC milling machine. The usage of this machine is aimed to workshops who would like to get both cheap machining with good accuracy. The cost is very low as of the innovative design of putting the entire axis moving over each other rather than independent from each other as in the regular design of any CNC machine Chapter II Literature Review 2.1 Milling Machine Milling is the process of machining flat, curved, or irregular surfaces by feeding the work piece against a rotating cutter containing a number of cutting edges. The milling machine consists basically of a motor driven spindle, which mounts and revolves the milling cutter, and a reciprocating adjustable worktable, which mounts and feeds the work piece. 2.1.2 Milling Machine History Unlike lathes, which have been known for thousands of years, milling machines are less than two hundred years old. Because they require much more power than hand-driven lathes, their introduction had to wait for the invention of industrial water and steam power. Also, all their mechanical components had to first be made available, such as accurately fitted slides, large castings to resist cutting forces, calibrated lead screws, and hardened steel cutting tools. Eli Whitney is credited with inventing the first milling machine about 1818, but the knee-and-column support arrangement of the universal milling machine of Joseph A. Brown (later of Brown and Sharpe) dates from 1862 and marks an important step in the machines development. During the last half of the nineteenth Century, milling machines gradually replaced shapers and planers which have lathe-type, single-point tool bits that move over the work in a straight line and scrape off metal one stroke at a time. Milling machines, with their continuous cutting action, not only remove metal faster than shapers and planers, they perform additional operations like cutting helices for gears and twist drills. Today, milling machines greatly outnumber shaping and planning machines. Americans in New England and later the Midwest continuously added features leading to the modern milling machine. Another important development came in the 1930s when Rudolph Bannow and Magnus Wahlstrom brought out the Bridgeport-style vertical milling machine. This design offers versatility and economy in place of the higher metal removal rates of traditional horizontal milling machines. Because of this versatility, there are more Bridgeport-style mills in existence today than any other milling machine design. Horizontal mills are now usually reserved for production applications where high metal removal rates on identical parts are needed, not prototyping and short runs. Bridgeport-style machines are also called knee-and-column machines and turret mills. For production applications, there are large, expensive milling machines with three or more axes under computer control. Some machines perform all operations including automatic tool changing. However, today there is an intermediate step between a manual mill and a fully automated one. Adding a computer, digital readouts, and actuators to the X- and Y-axes of a Bridgeport-style mill does this. Not only can this enhanced machine tirelessly perform all its existing repetitive functions, it also has added new capabilities. Now the mill can engrave (drive the tool to cut numbers and letters in various sizes and fonts), cut radii and angles without a rotary table, make islands, pockets, and cut ellipses, and frames. Entering the position, diameter and number of holes, automates cutting a bolt-hole pattern; the system does the math. The computer can automatically compensate for the reduced diameter of re sharp end milling cutters, saving time and money. The system can be manually programmed through its control panel, use stored programs, ââ¬Å"learnâ⬠new tasks by memorizing a series of manual operations as the operator makes the first part, or accept files from CAD programs. 2.1.1 Type of MILLING MACHINES Milling machine are classified on the base of the position of their spindle. The spindle operates in either a vertical or horizontal position or on base of construction. In a following section we represent the different type of milling machine. Column Knee-type Milling Machine Fig 2 machines are characterized by a vertically adjustable worktable resting on a saddle which is supported by a knee. The knee is a massive casting that rides vertically on the milling machine column and can be clamped rigidly to have column in a position where the milling head and milling machine spindle are properly adjusted for operation. The plain vertical column knee type machines are characterized by a spindle located vertically, parallel to the column face, and mounted in a sliding head that can be fed up and down by hand or power. Modern vertical milling machines are designed so the entire head can also swivel to permit working on angular surfaces. The plain horizontal milling machines column contains the drive motor and gearing and a fixed position horizontal milling machine spindle. An adjustable overhead arm containing one or more arbor supports projects forward from the top of the column. The arm and arbor supports are used to stabilize long arbors. Supports can be moved along the overhead arm to support the arbor where support is desired depending on the position of the milling cutter or cutters. UNIVERSAL MILLING MACHINE The basic difference between a universal milling machine and a plain column knee type milling machine is the addition of table swivel housing between the table and the saddle of the universal machine. This permits the table to swing up to 45à ° in either direction for angular and helical milling operations. The universal machine can be fitted with various attachments such as the indexing fixture, rotary table, slotting and rack cutting attachments, and various special fixtures. RAM-TYPE MILLING MACHINEThe ram-type milling machine is characterized by a spindle mounted to a movable housing on the column to permit positioning the milling cutter forward or rearward in a horizontal plane. Two popular ram-type milling machines are the universal milling machine and the swivel cutter head ram-type milling machine. Gantry Milling Machinefigure 5is simplest construction of milling machine is usually use in CNC machine for cutting wood plastic and light metal Rotary-Table Milling MachinesThese are also called continuous milling machines, as the work picas are set up without stopping the operation. Rotary-table machines are highly productive; consequently, they are frequently used for both batch and mass production. The Work prices being machined are clamped in fixtures installed on the rotating table (2) figure 6. The machines may be equipped with one or two spindle heads (1).When several surfaces are to be machined; the Work pieces are indexed in the fixtures after each complete revolution of the table. The machining cycle provides as many table revolutions as the number of surfaces to be machined. 2.1.2 MILLING CUTTERS The milling cutters are selected for each specified machining duty. The milling cutter may be provided with a hole to be mounted on the arbor of the horizontal milling machines, or provided with a straight or tapered shank for mounting on the vertical or horizontal milling machine. Figure 7 visualizes commonly used milling cutters during their operation. These include the following: Plain milling cutters are either straight or helical ones. Helical milling cutters are preferred for large cutting widths to provide smooth cutting and improved surface quality (Figure 7 a). Plain milling cutters are mainly used on horizontal milling machines. Face milling cutters are used for the production of horizontal (Figure 7 b), vertical (Figure 7 c), or inclined (Figure 7 d) at surfaces. They are used on vertical milling machines, planer type milling machines, and vertical milling machines with the spindle swiveled to the required angle. Side milling cutters are clamped on the arbor of the horizontal milling machine and are used for machining of the vertical surface of a shoulder (Figure 7 e) or cutting a keyway (Figure 7 f). Interlocking (staggered) side mills (Figure 7 g) mounted on the arbor of the horizontal milling machines are intended to cut wide keyways and cavities. Slitting saws (Figure 7 h) are used on horizontal milling machines. Angle milling cutters, used on horizontal milling machines, for the production of longitudinal grooves (Figure 7 I) or for edge chamfering. End mills are tools of a shank type, which can be mounted on vertical milling machines (or directly in the spindle nose of horizontal milling machines). End mills may be employed in machining keyways (Figure 7 j) or vertical surfaces (Figure 7 k). Key-cutters are also of the shank type that can be used on vertical milling machines. They may be used for single-pass milling or multi pass milling operations (Figures 7 l and 7 m). Form-milling cutters are mounted on horizontal milling machines. Form cutters may be either concave as shown in (Figure 7 n) or convex as in Figure (7 o). T-slot cutters are used for milling T-slots and are available in different sizes. The T-slot is machined on a vertical milling machine in two steps: 1-Slotting with end mill (Figure 7 j) 2-Cutting with T-slot cutter (Figure 7 p). Compound milling cutters are mainly used to produce compound surfaces. These cutters realize high productivity and accuracy (Figure 7 q). Inserted tool milling cutters have a main body that is fabricated from tough and less expensive steel. The teeth are made of alloy tool steel, HSS, carbides, ceramics, or cubic boron nitride (CBN) and mechanically attached to the body using set screws and in some cases are brazed. Cutters of this type are confined usually to large-diameter face milling cutters or horizontal milling cutters (Figure 7 q). Gear milling cutters are used for the production of spur and helical gears on vertical or horizontal milling machines (Figures 7 r and 7 s). Gear cutters are form-relieved cutters, which are used to mill contoured surfaces. They are sharpened at the tooth face. Hobbing machines and gear shapers are used to cut gears for mass production and high-accuracy demands. 2.1.3 Milling operation Milling is the removal of metal by feeding the work past a rotating multi toothed cutter. In this operation the material removal rate (MRR) is enhanced as the cutter rotates at a high cutting speed. The surface quality is also improved due to the multi cutting edges of the milling cutter. The action of the milling cutter is totally different from that of a drill or a turning tool. In turning and drilling, the tools are kept continuously in contact with the material to be cut, whereas milling is an intermittent process, as each tooth produces a chip of variable thickness. Milling operations may be classified as peripheral (plain) milling or face (end) milling (Figure 8). In peripheral milling, the cutting occurs by the teeth arranged on the periphery of the milling cutter, and the generated surface is a plane parallel to the cutter axis. Peripheral milling is usually performed on a horizontal milling machine. For this reason, it is sometimes called horizontal milling. The appearance of the surface and also the type of chip formation are affected by the direction of cutter rotation with respect to the movement of the WP. In this regard, two types of peripheral milling are differentiable, namely, up-milling and down-milling. Up-milling is accomplished by rotating the cutter against the direction of the feed of the WP (Figure 9 a). The tooth picks up from the material gradually; that is, the chip starts with no thickness and increases in size as the teeth progress through the cut. This means that the cycle of operation to remove the chip is first a sliding action at the beginning and then a crushing action takes place, which is followed by the actual cutting action. In some metals, up-milling leads to strain hardening of the machined surface, and also to chattering and excessive teeth blunting. Advantages of up-milling include the following: It does not require a backlash eliminator. It is safer in operation (the cutter does not climb on the work). Loads on teeth are acting gradually. Built-up edge (BUE) fragments are absent from the machined surface. The milling cutter is not affected by the sandy or scaly surfaces of the work. Down-Milling is accomplished by rotating the cutter in the direction of the work feed, as shown in Figure 9b. In climb milling, as implied by the name, the milling cutter attempts to climb the WP. Chips are cut to maximum thickness at initial engagement of cutter teeth with the work, and decrease to zero at the end of its engagement. The cutting forces in down milling are directed downward. Down-milling should not be attempted if machines do not have enough rigidity and are not provided with backlash eliminators. Under such circumstances, the cutter climbs up on the WP and the arbor and spindle may be damaged. Advantages of down-milling include the following: Fixtures are simpler and less costly, as cutting forces are acting downward. Flat WPs or plates that cannot be held can be machined by down-milling. Cutter with higher rake angles can be used, which decreases the power requirements. Tool blunting is less likely. Down-milling is characterized by fewer tendencies of chattering and vibration, which leads to improved surface finish. up milling down milling In face milling, the generated surface is at a right angle to the cutter axis. When using cutters of large diameters, it is a good practice to tilt the spindle head slightly at an angle of 13à ° to provide some clearance, which leads to an improved surface finish and eliminate tool blunting. Face milling is usually performed on vertical milling machines; for this reason, the process is called vertical milling, which is more productive than plain milling. 2.2 Computer Numerical Control The abbreviation CNC stands for computer numerical control, and refers specifically to a computer controller that reads G-code instructions and drives a machine tool, a powered mechanical device typically used to fabricate components by the selective removal of material. CNC does numerically directed interpolation of a cutting tool in the work envelope of a machine. The operating parameters of the CNC can be altered via a software load program. 2.2.1 Historical overview CNC was preceded by NC (Numerically Controlled) machines, which were hard wired and their operating parameters could not be changed. NC was developed in the late 1940s and early 1950s by John T. Parsons in collaboration with the MIT Servomechanisms Laboratory. The first CNC systems used NC style hardware, and the computer was used for the tool compensation calculations and sometimes for editing. Punched tape continued to be used as a medium for transferring G-codes into the controller for many decades after 1950, until it was eventually superseded by RS232 cables, floppy disks, and now is commonly tied directly into plant networks. The files containing the G-codes to be interpreted by the controller are usually saved under the .NC extension. Most shops have their own saving format that matches their ISO certification requirements. The introduction of CNC machines radically changed the manufacturing industry. Curves are as easy to cut as straight lines, complex 3-D structures are relatively easy to produce, and the number of machining steps that required human action has been dramatically reduced. With the increased automation of manufacturing processes with CNC machining, considerable improvements in consistency and quality have been achieved with no strain on the operator. CNC automation reduced the frequency of errors and provided CNC operators with time to perform additional tasks. CNC automation also allows for more flexibility in the way parts are held in the manufacturing process and the time required changing the machine to produce different components. 2.2.2 Production environment A series of CNC machines may be combined into one station, commonly called a cell, to progressively machine a part requiring several operations. CNC machines today are controlled directly from files created by CAM software packages, so that a part or assembly can go directly from design to manufacturing without the need of producing a drafted paper drawing of the manufactured component. In a sense, the CNC machines represent a special segment of industrial robot systems, as they are programmable to perform many kinds of machining operations (within their designed physical limits, like other robotic systems). CNC machines can run over night and over weekends without operator intervention. Error detection features have been developed, giving CNC machines the ability to call the operators mobile phone if it detects that a tool has broken. While the machine is awaiting replacement on the tool, it would run other parts it is already loaded with up to that tool and wait for the operator. T he ever changing intelligence of CNC controllers has dramatically increased job shop cell production. Some machines might even make 1000 parts on a weekend with no operator, checking each part with lasers and sensors. 2.2.3 CNC Components and Control System The two main components of a CNC machine are the machine tool and the machine control unit (MCU). The MCU is the computer that operates the machine tool. There are many manufacturers of these control units, so program codes may vary somewhat between machines. Figure 10 shows three types of control systems for NC and CNC machines. The least expensive type is called a point-to-point (PTP) control system. A PTP control system can only move a tool in a straight line and is limited to hole operations (drilling, boring, reaming, etc.) and spot welding. The tool path between points is not controllable in a PTP system. A straight-cut control system is capable of moving the cutting tools in a straight line between points. However, only one axis drive motor can move at one time, so arcs and angles are not possible. The contouring control system is the most expensive and flexible of the three systems. With the recent advances in electronics, the price difference between these systems has narrowed so much that every CNC machine is now manufactured with a contouring control system. A contouring system is capable of doing what the other systems can do while also being able to cut arcs and angles. 2.2.3 Positioning Formats A CNC program is written using the Cartesian coordinate system. The CNC tool can be moved inside the rectangular coordinates in either two or three dimensions. Lathes are programmed two-dimensionally using only the x- and y-axes, while milling machines are programmed three-dimensionally using the x-, y-, and z-axes. The z-axis is always the axis that determines the depth of cut. The x-axis is parallel to the longest length of the machine table, and the y-axis is parallel to the shortest length of the machine table. CNC programs can be written in one quadrant or four quadrants. CNC machines can be positioned in two ways with respect to the Cartesian coordinate system. They can be positioned in an absolute format or an incremental format. In the absolute format, all machine locations are taken from starting point (0, 0), which is referred to as the home position. In incremental format there are no assigned or home coordinates. The cutter tool bit moves in spaces (increments) relative to the coordinates previously listed. The absolute format is typically used for the main body of a CNC program. This allows the cutting tool to be given a home position to start and end its job. The incremental format is used in the middle of a program when a repetitious cycle (commonly referred to as a canned cycle) is needed. A canned cycle is a cutting pattern that can be programmed to repeat as many times as desired. It can reduce the size of a program tremendously, depending on the number of machining operations involved. The size of a program is reduced by a canned cycle because a programmer does not have to give the fixed coordinates of each move of the cutting tool. A programmer must only give the distance from each previous move of the cutter for one cycle. After that, a programmer merely has to list the number of times the cycle must be repeated. A programmer can also call up the canned cycle and use it again to do a similar machining operation in another part of the work piece. 2.2.4 CNC Programming Because of the added feature of a computers memory, CNC programming is a lot easier and simpler than conventional NC programming. Most CNC machines can be programmed using a standardized list of codes that were developed by the Electronics Industries Association (EIA), as shown in Table 1. These codes include preparatory functions or G codes. Some of these functions include cutting an arc in a clockwise direction (G02 circular interpolation) and telling the machine that the dimensions will be given in millimeters (G71-metric programming). 2.2.5 Task Flow in CNC The task flow that is needed for producing apart using a CNC machine can be summarizedas Fig.1.2.The tasks can be classified as the following three types: Offline tasks: CAD, CAPP, CAM. Online tasks: CNC machining, monitoring and On Machine Measurement. Post-line tasks: Computer Aided Inspection (CAI), post-operation. Offline tasks are the tasks that are needed to generate apart program for controlling a CNC machine. In the offline stage, after the shape of apart has been decided, a geometry model of this part is created by 2D or 3D CAD. In general, CAD means Computer Aided Design After finishing geometric modeling, Computer Aided Process Planning, CAPP, is carried out where necessary information for machining is generated. In this stage, the Selection of machine tools, tools, jig and fixture, decisions about cutting conditions, Scheduling and machining sequences are created. Because process planning is very Complicated and CAPP is immature with respect to technology, process planning generally depends on the know how of a process planner. CAM (Computer Aided Manufacturing) is executed in the final stage for generating apart program. In this stage, tool paths are generated based on geometry information from CAD and machining information from CAPP. During tool path generation, interferences between tool and work piece, minimization of machining time and tool change, and machine performance are considered .In particular; CAM is an essential tool to generate 2.5D or 3D tool paths for machine tools with more than three axes. Online tasks are those that are needed to machine parts using CNC machines. A part program, being the machine understandable instructions, can be generated in the above mentioned offline stage and part programs for a simple part can be directly edited in CNC by the user. In this stage, the CNC system reads and interprets part programs from memory and controls the movement of axes. The CNC system generates instructions for position and velocity control based on the part program and servo motors are controlled based on the instructions generated. As the rotation of a servo motor is transformed into linear movement via ball screw mechanisms, the work piece or tool is moved and finally, the part is machined by these movements. In the online stage, the status of the machine and machining process may be monitored during machining. Actually, tool breakage detection, compensation of thermal deformation, adaptive control, and compensation of tool defection based on monitoring of cutting force, heat, and electric current are applied during machining. On Machine Measurement is also used to calculate machining error by inspecting the finished part on the machine, returning machining errors to controller to carryout compensation. The post-line task is to carryout CAI (Computer Aided Inspection), inspecting the finished part. In this stage, inspection using a CMM (Coordinate Measurement Machine) is used to make a comparison between the result and the geometry model in order to perform compensation. The compensation is executed by modifying tool Compensation or by doing post operations such as re machining and grinding. Reverse engineering, meaning that the shape of the part is measured and a geometric model based on the measured data is generated, is included in this stage. As mentioned above, through three stages, it is possible for machine tools not only to satisfy high accuracy and productivity but also to machine parts with complex shape as well as simple shapes. Because CNC machines can machine a variety of parts by changing the part program and repetitively machine the same part shape by storing part programs, CNC machines can be used for general purposes.
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