Sunday, May 10, 2020
The Impact Of Organizational Justice On Turnover...
The Impact of Organizational Justice on Turnover Intentions, Job Satisfaction, and Organizational Citizenship Behavior among Laboratory Technologists Technicians in Jeddah Introduction Wit h the recent increase in globalization and international competition, the importance of managing resources that can improve competitiveness of organizations has become a crucial element in the success of healthcare system. Among these resources, human resources require a special attention in todayââ¬â¢s organizations. Human resources play an important role in the healthcare services. Increasing organizational justice contributes to the increased competitiveness of healthcare service organizations and lead to better future performance. Organizational justice describes the individualsââ¬â¢ (or groupsââ¬â¢) perception of the fairness of treatment received from an organization and their behavioral reaction to such perceptions (1). It is essential for understanding organizational behavior (2). During the past decades, the study of justice has received major research attention from a variety of disciplines, including economics, psychology, law, and organizational science (3). For employees, perceptions of justice in the organization are important determinants of their judgments about the organizationââ¬â¢s environment. Many studies on organizational justice provide evidence for the value of justice perceptions in shaping an employeeââ¬â¢s work experience including expressions of job satisfaction, turnoverShow MoreRelatedHuman Resources Management150900 Words à |à 604 Pagesprofessionals and operating managers must view HR management as an interface. Discuss why ethical issues and professionalism affect HR management as a career field. ââ" ââ" ââ" ââ" ââ" 3 HR TRANSITIONS HR Management Contributes to Organizational Success More effective management of human resources (HR) increasingly is being seen as positively affecting performance in organizations, both large and small. A joint venture between General Electric and a Japanese company, GE Fanuc is a manufacturerRead MoreStrategic Human Resource Management View.Pdf Uploaded Successfully133347 Words à |à 534 PagesPerspective and Human Resources .... 2 HUMAN RESOURCE INVESTMENT CONSIDERATIONS ...6 INVESTMENTS IN TRAINING AND DEVELOPMENT ..... 14 INVESTMENT PRACTICES FOR IMPROVED RETENTION ............................................................ 32 INVESTMENTS IN JOB-SECURE WORKFORCES .......... 42 ETHICAL IMPLICATIONS OF EMPLOYMENT PRACTICES ............................................................. 56 NONTRADITIONAL INVESTMENT APPROACHES ......... 58 SUMMARY.................................................Read MoreFundamentals of Hrm263904 Words à |à 1056 PagesStrategic HRM 28 PART 2 Chapter 3 Chapter 4 THE LEGAL AND ETHICAL CONTEXT OF HRM Equal Employment Opportunity 56 Employee Rights and Discipline 84 PART 3 Chapter 5 Chapter 6 Chapter 7 STAFFING THE ORGANIZATION Human Resource Planning and Job Analysis 110 Recruiting 132 Foundations of Selection 154 PART 4 Chapter 8 Chapter 9 TRAINING AND DEVELOPMENT Socializing, Orienting, and Developing Employees 182 Managing Careers 208 PART 5 Chapter 10 Chapter 11 Chapter 12 Chapter 13 Read MoreDeveloping Management Skills404131 Words à |à 1617 Pagesmymanagementlab is an online assessment and preparation solution for courses in Principles of Management, Human Resources, Strategy, and Organizational Behavior that helps you actively study and prepare material for class. Chapter-by-chapter activities, including built-in pretests and posttests, focus on what you need to learn and to review in order to succeed. Visit www.mymanagementlab.com to learn more. DEVELOPING MANAGEMENT SKILLS EIGHTH EDITION David A. Whetten BRIGHAM YOUNG UNIVERSITY Read MoreContemporary Issues in Management Accounting211377 Words à |à 846 Pagesfulfil these roles in the coming years. In part this reflects a more general decline in the academic world as falling relative salaries and status have reduced the intake of talented academic entrepreneurs. But I also think it reflects the cumulative impact of regulatory and careerist pressures in the academic world itself. With government agencies pressing for ever more standardized and conventional research and with increasingly instrumental careerist vi FOREWORD behaviour by academics, thereRead MoreProject Mgmt296381 Words à |à 1186 Pages 12.4] 10.3.3.1 Lessons learned [8.3.3.4] 9.4.2.2 Individual performance appraisals Chapter 7 Managing Risk Chapter 15 Chapter 16 International Projects Oversight 11.1 Risk management process [F.8] 11.2 Identifying risks 11.3.2.2 Impact matrix 11.4 Risk assessment 11.5 Risk responses (.2ââ¬â.1.2) 11.6 Risk register 7.1.2.5 PERT analysis 7.1.2.6.3 Contingency reserves 7.3.3.4 Change control management G.7 Culture awareness 1.4.4 Project offices 8.1.2 Continuous improvement 5.1 Requirements
Wednesday, May 6, 2020
Deception Point Page 55 Free Essays
A leviathan was rising from the water beside the iceberg, breaching the surface with an ominous hiss. Like some mythical sea monster, it came-sleek, black, and lethal, with water foaming around it. Tolland forced himself to blink his eyes. We will write a custom essay sample on Deception Point Page 55 or any similar topic only for you Order Now His vision cleared slightly. The beast was close, bumping up against the ice like a huge shark butting a small boat. Massive, it towered before him, its skin shimmering and wet. As the hazy image went black, all that was left were the sounds. Metal on metal. Teeth gnashing at the ice. Coming closer. Dragging bodies away. Rachelâ⬠¦ Tolland felt himself being grabbed roughly. And then everything went blank. 64 Gabrielle Ashe was at a full jog when she entered the third-floor production room of ABC News. Even so, she was moving slower than everyone else in the room. The intensity in production was at a fever pitch twenty-four hours a day, but at the moment the cubicle grid in front of her looked like the stock exchange on speed. Wild-eyed editors screamed to one another over the tops of their compartments, fax-waving reporters darted from cubicle to cubicle comparing notes, and frantic interns inhaled Snickers and Mountain Dew between errands. Gabrielle had come to ABC to see Yolanda Cole. Usually Yolanda could be found in productionââ¬â¢s high-rent district-the glass-walled private offices reserved for the decision makers who actually required some quiet to think. Tonight, however, Yolanda was out on the floor, in the thick of it. When she saw Gabrielle, she let out her usual shriek of exuberance. ââ¬Å"Gabs!â⬠Yolanda was wearing a batik body-wrap and tortoiseshell glasses. As always, several pounds of garish costume jewelry were draped off her like tinsel. Yolanda waddled over, waving. ââ¬Å"Hug!â⬠Yolanda Cole had been a content editor with ABC News in Washington for sixteen years. A freckle-faced Pole, Yolanda was a squat, balding woman whom everyone affectionately called ââ¬Å"Mother.â⬠Her matronly presence and good humor disguised a street-savvy ruthlessness for getting the story. Gabrielle had met Yolanda at a Women in Politics mentoring seminar sheââ¬â¢d attended shortly after her arrival in Washington. Theyââ¬â¢d chatted about Gabrielleââ¬â¢s background, the challenges of being a woman in D.C., and finally about Elvis Presley-a passion they were surprised to discover they shared. Yolanda had taken Gabrielle under her wing and helped her make connections. Gabrielle still stopped by every month or so to say hello. Gabrielle gave her a big hug, Yolandaââ¬â¢s enthusiasm already lifting her spirits. Yolanda stepped back and looked Gabrielle over. ââ¬Å"You look like you aged a hundred years, girl! What happened to you?â⬠Gabrielle lowered her voice. ââ¬Å"Iââ¬â¢m in trouble, Yolanda.â⬠ââ¬Å"Thatââ¬â¢s not the word on the street. Sounds like your man is on the rise.â⬠ââ¬Å"Is there some place we can talk in private?â⬠ââ¬Å"Bad timing, honey. The President is holding a press conference in about half an hour, and we still havenââ¬â¢t a clue what itââ¬â¢s all about. Iââ¬â¢ve got to line up expert commentary, and Iââ¬â¢m flying blind.â⬠ââ¬Å"I know what the press conference is about.â⬠Yolanda lowered her glasses, looking skeptical. ââ¬Å"Gabrielle, our correspondent inside the White House is in the dark on this one. You say Sextonââ¬â¢s campaign has advance knowledge?â⬠ââ¬Å"No, Iââ¬â¢m saying I have advance knowledge. Give me five minutes. Iââ¬â¢ll tell you everything.â⬠Yolanda glanced down at the red White House envelope in Gabrielleââ¬â¢s hand. ââ¬Å"Thatââ¬â¢s a White House internal. Whereââ¬â¢d you get that?â⬠ââ¬Å"In a private meeting with Marjorie Tench this afternoon.â⬠Yolanda stared a long moment. ââ¬Å"Follow me.â⬠Inside the privacy of Yolandaââ¬â¢s glass-walled cubicle, Gabrielle confided in her trusted friend, confessing to a one-night affair with Sexton and the fact that Tench had photographic evidence. Yolanda smiled broadly and shook her head laughing. Apparently she had been in Washington journalism so long that nothing shocked her. ââ¬Å"Oh, Gabs, I had a hunch you and Sexton had probably hooked up. Not surprising. Heââ¬â¢s got a reputation, and youââ¬â¢re a pretty girl. Too bad about the photos. I wouldnââ¬â¢t worry about it, though.â⬠Donââ¬â¢t worry about it? Gabrielle explained that Tench had accused Sexton of taking illegal bribes from space companies and that Gabrielle had just overheard a secret SFF meeting confirming that fact! Again Yolandaââ¬â¢s expression conveyed little surprise or concern-until Gabrielle told her what she was thinking of doing about it. Yolanda now looked troubled. ââ¬Å"Gabrielle, if you want to hand over a legal document saying you slept with a U.S. senator and stood by while he lied about it, thatââ¬â¢s your business. But Iââ¬â¢m telling you, itââ¬â¢s a very bad move for you. You need to think long and hard about what it could mean for you.â⬠ââ¬Å"Youââ¬â¢re not listening. I donââ¬â¢t have that kind of time!â⬠ââ¬Å"I am listening, and sweetheart, whether or not the clock is ticking, there are certain things you just do not do. You do not sell out a U.S. senator in a sex scandal. Itââ¬â¢s suicide. Iââ¬â¢m telling you, girl, if you take down a presidential candidate, you better get in your car and drive as far from D.C. as possible. Youââ¬â¢ll be a marked woman. A lot of people spend a lot of money to put candidates at the top. Thereââ¬â¢s big finances and power at stake here-the kind of power people kill for.â⬠Gabrielle fell silent now. ââ¬Å"Personally,â⬠Yolanda said, ââ¬Å"I think Tench was leaning on you in hopes youââ¬â¢d panic and do something dumb-like bail out and confess to the affair.â⬠Yolanda pointed to the red envelope in Gabrielleââ¬â¢s hands. ââ¬Å"Those shots of you and Sexton donââ¬â¢t mean squat unless you or Sexton admit theyââ¬â¢re accurate. The White House knows if they leak those photos, Sexton will just claim theyââ¬â¢re phony and throw them back in the presidentââ¬â¢s face.â⬠ââ¬Å"I thought of that, but still the campaign finance bribery issue is-ââ¬Å" ââ¬Å"Honey, think about it. If the White House hasnââ¬â¢t gone public yet with bribery allegations, they probably donââ¬â¢t intend to. The President is pretty serious about no negative campaigning. My guess is he decided to save an aerospace industry scandal and sent Tench after you with a bluff in hopes he might scare you out of hiding on the sex thing. Make you stab your candidate in the back.â⬠Gabrielle considered it. Yolanda was making sense, and yet something still felt odd. Gabrielle pointed through the glass at the bustling news room. ââ¬Å"Yolanda, you guys are gearing up for a big presidential press conference. If the President is not going public about bribery or sex, whatââ¬â¢s it all about?â⬠Yolanda looked stunned. ââ¬Å"Hold on. You think this press conference is about you and Sexton?â⬠ââ¬Å"Or the bribery. Or both. Tench told me I had until eight tonight to sign a confession or else the President was going to announce-ââ¬Å" Yolandaââ¬â¢s laughter shook the entire glass cubicle. ââ¬Å"Oh please! Wait! Youââ¬â¢re killing me!â⬠Gabrielle was in no mood for joking. ââ¬Å"What!â⬠ââ¬Å"Gabs, listen,â⬠Yolanda managed, between laughs, ââ¬Å"trust me on this. Iââ¬â¢ve been dealing with the White House for sixteen years, and thereââ¬â¢s no way Zach Herney has called together the global media to tell them he suspects Senator Sexton is accepting shady campaign financing or sleeping with you. Thatââ¬â¢s the kind of information you leak. Presidents donââ¬â¢t gain popularity by interrupting regularly scheduled programming to bitch and moan about sex or alleged infractions of cloudy campaign finance laws.â⬠ââ¬Å"Cloudy?â⬠Gabrielle snapped. ââ¬Å"Flat out selling your decision on a space bill for millions in ad money is hardly a cloudy issue!â⬠ââ¬Å"Are you sure thatââ¬â¢s what he is doing?â⬠Yolandaââ¬â¢s tone hardened now. ââ¬Å"Are you sure enough to drop your skirt on national TV? Think about it. It takes a lot of alliances to get anything done these days, and campaign finance is complex stuff. Maybe Sextonââ¬â¢s meeting was perfectly legal.â⬠How to cite Deception Point Page 55, Essay examples
Wednesday, April 29, 2020
Smoking Should Be Banned In the United States
For numerous decades, smoking has remained the most disastrous problem in the universe in spite of the full awareness of the risk accompanied with its use. It results into detrimental effects in the human body and has been linked with numerous diseases such as heart attack, lung and mouth cancers among other ailments.Advertising We will write a custom essay sample on Smoking Should Be Banned In the United States specifically for you for only $16.05 $11/page Learn More In addition, tobacco use in open vicinity is harmful because it affects both the consumer and other members of the public who inhale it. Nevertheless, smoking is dangerous to the society as a whole due to its polluting nature and impact on the environment (Williams 180). Therefore, it should be banned in the United States. The substances in tobacco are harmful for a human life. They damage most of the internal body organs leading to poor health of the consumer. Tar and nicotine are the majo r contributors of lung, kidney, throat, and mouth cancers and above all lead to death. Presently, ââ¬Å"most of the American citizens suffer from tobacco-related diseasesâ⬠(Shrestha 1). It is unfortunate that tribulations caused by tobacco are not only dangerous for the smokers but also for the members of the public. People who do not smoke are also exposed to the risk when they inhale the smoke. The gas is harmful to the health of passive smokers. The research has indicated that people living with addicts have twenty five to thirty percent of developing lung cancer (Williams Torrens 120). Its impact is not only on the smokers, but also on the countyââ¬â¢s economy. The statistics shows that the American government spends approximately fifty billion dollars every year to treat cigarette related diseases. The use of cigarettes causes economic problems to the households since the prices are high and most of the citizens are below the poverty line. Research shows that poor ci tizens use up to twenty five percent of their total income on cigarettes, instead of contributing to family development. As a result, its use should be banned in the United States. The government should find the most reliable way of stopping the drug in the country. It should first start by giving a ban on its use in public places such as restaurants to reduce the premature death of passive smokers. However, stopping people from smoking on the other hand might not be that easy as it will be violating their conjugal rights as citizens (a habit which they should not be deprived of). It becomes addictive to them, thus, posing ban on it might not be of any help to them.Advertising Looking for essay on health medicine? Let's see if we can help you! Get your first paper with 15% OFF Learn More The United States economy has been boosted by high taxes extracted from the cigarette sales. So, this ban may cause the decline in the American economy. In addition, cigarette compani es have provided many American citizens with employment in various sectors. In this way, they considerably reduce the level of poverty in the country. The government should find another alternative means of providing employment to the citizens apart from the cigarette industry. In addition, the government should come up with another alternative source of revenue rather than that from cigarettes. Last and the most vital thing, the government should develop a strategy of educating people on the negative impacts of tobacco use so that they can realize by themselves that their lives are in great danger. In conclusion, the situation has to be changed in the United States as it poses great danger to the public. The associated benefits are outweighed by the disadvantages, hence smoking should be banned in the United Sates. Works Cited Shrestha, Laura. The Changing Demographic Profile of the United States. 2006. Web. https://fas.org/sgp/crs/misc/RL32701.pdf Williams, Stephen. Introduction t o Health Services. Mason, OH: Cengage Learning, 2010. Print. Williams, Stephen, and Paul Torrens. Introduction to Health Services 2010: Custom Edition. 7th ed. New York: Cengage Delmar, 2008. Print. This essay on Smoking Should Be Banned In the United States was written and submitted by user Jaelyn Carney to help you with your own studies. You are free to use it for research and reference purposes in order to write your own paper; however, you must cite it accordingly. You can donate your paper here.
Friday, March 20, 2020
The Battle of Chancellorsville in the Civil War
The Battle of Chancellorsville in the Civil War Conflict Dates: The Battle of Chancellorsville was fought May 1-6, 1863, and was part of the American Civil War. Armies Commanders: Union Major General Joseph Hooker133,868 men Confederate General Robert E. Lee60,892 men Background: In the wake of the Union disaster at the Battle of Fredericksburg and subsequent Mud March, Major General Ambrose Burnside was relieved and Major General Joseph Hooker given command of the Army of the Potomac on January 26, 1863. Known as an aggressive fighter in battle and a severe critic of Burnside, Hooker had compiled a successful resume as a division and corps commander. With the army encamped on the east bank of the Rappahannock River near Fredericksburg, Hooker took the spring to reorganize and rehabilitate his men after the trials of 1862. Included in this shakeup of the army was the creation of an independent cavalry corps under Major General George Stoneman. To the west of the town, General Robert E. Lees Army of Northern Virginia remained in place along the heights they had defended the previous December. Short on supplies and needing to protect Richmond against a Union thrust up the Peninsula, Lee detached over half of Lieutenant General James Longstreets First Corps south to aid in gathering provisions. Operating in southern Virginia and North Carolina, the divisions of Major Generals John Bell Hood and George Pickett began funneling food and stores north to Fredericksburg. Already outnumbered by Hooker, the loss of Longstreets men gave Hooker over a 2-to-1 advantage in manpower. The Union Plan: Aware of his superiority and utilizing information from his newly-formed Bureau of Military Intelligence, Hooker devised one of the strongest Union plans to date for his spring campaign. Leaving Major General John Sedgwick with 30,000 men at Fredericksburg, Hooker intended to secretly march northwest with the rest of the army, then cross the Rappahannock in Lees rear. Attacking east as Sedgwick advanced west, Hooker sought to catch the Confederates in a large double envelopment. The plan was to be supported by a large-scale cavalry raid conducted by Stoneman which was to cut the railroads south to Richmond and sever Lees supply lines as well as prevent reinforcements from reaching the battle.à Moving out on April 26-27, the first three corps successfully crossed the river under the guidance of Major General Henry Slocum. Pleased that Lee was not opposing the crossings, Hooker ordered the remainder of his forces to move out and by May 1 had concentrated around 70,000 men around Cha ncellorsville (Map). Lee Responds: Located at the crossroads of the Orange Turnpike and Orange Plank Road, Chancellorsville was little more than a large brick house owned by the Chancellor family which was located in a thick pine thicket forest known as the Wilderness. As Hooker moved into position, Sedgwicks men crossed the river, advanced through Fredericksburg, and took up a position opposite the Confederate defense on Maryes Heights. Alerted to the Union movement, Lee was forced to divide his smaller army and left Major General Jubal Earlys division and Brigadier General William Barksdales brigade at Fredericksburg while he marched west on May 1 with around 40,000 men. It was his hope that by aggressive action, he would be able to attack and defeat part of Hookers army before its larger numbers could be concentrated against him. He also believed that Sedgwicks force at Fredericksburg would only demonstrate against Early and Barksdale rather than pose a legitimate threat. That same day, Hooker began pressing east with the goal of getting clear of the Wilderness so that his advantage in artillery could come into play. Fighting soon erupted between Major General George Sykes division of Major General George G. Meades V Corps and the Confederate division of Major General Lafayette McLaws. The Confederates got the better of the fight and Sykes withdrew. Though he retained the advantage, Hooker halted his advance and consolidated his position in the Wilderness with the intention of fighting a defensive battle. This change in approach greatly irritated several of his subordinates who sought to move their men out of the Wilderness and take some of the high ground in the area (Map). That night, Lee and Second Corps commander Lieutenant General Thomas Stonewall Jackson met to develop a plan for May 2. While they talked, Confederate cavalry commanderà Major General J.E.B. Stuart arrived and reported that while the Union left was firmly anchored on the Rappahannock and their center heavily fortified, Hookers right was in the air. This end of the Union line was held by Major General Oliver O. Howards XI Corps which had camped along the Orange Turnpike. Feeling that desperate action was needed, they devised a plan which called for Jackson to take the 28,000 men of his corps on a wide flanking march to attack the Union right. Lee himself would personally command the remaining 12,000 men in an attempt to hold Hooker until Jackson could strike. In addition, the plan required the troops at Fredericksburg to contain Sedgwick. Successfully disengaging, Jacksons men were able to make the 12-mile march undetected (Map). Jackson Strikes: In position by 5:30 PM on May 2, they faced the flank of the Union XI Corps. Comprised of largely inexperienced German immigrants, the XI Corpss flank was not fixed on a natural obstacle and was essentially defended by two cannon. Charging from the woods, Jacksons men caught them completely by surprise and quickly captured 4,000 prisoners while routing the remainder. Advancing two miles, they were within sight of Chancellorsville when their advance was halted by Major General Daniel Sickles III Corps. As the fighting raged, Hooker received a minor wound, but refused to cede command (Map). At Fredericksburg, Sedgwick received orders to advance late in the day, but held off as he believed he was outnumbered. As the front stabilized, Jackson rode forward in the darkness to scout the line. While returning, his party was fired on by a group of North Carolina troops. Struck twice in the left arm and once in the right hand, Jackson was carried from the field. As Jacksons replacement, Major General A.P. Hill was incapacitated the next morning, command devolved to Stuart (Map). On May 3, the Confederates launched major attacks all along the front, forcing Hookers men to abandon Chancellorsville and form a tight defensive line in front of United States Ford. Under heavy pressure, Hooker was finally able to get Sedgwick to advance. Moving forward, he was able to reach Salem Church before being halted by Confederate troops. Late in the day, Lee, believing that Hooker was beaten, shifted troops east to deal with Sedgwick. Having foolishly neglected to leave troops to hold Fredericksburg, Sedgwick was soon cut off and forced into a defensive position near Banks Ford (Map). Fighting a superb defensive action, he repelled Confederate attacks through the day on May 4 before withdrawing across the ford early on May 5 (Map). This retreat was the result of a miscommunication between Hooker and Sedgwick, as the former had wished the ford held so that main army could cross and renew the battle. Not seeing a way to save the campaign, Hooker began retreating across United States Ford that night ending the battle (Map). Aftermath: Known as Lees perfect battle as he repeatedly broke the tenet of never dividing ones forces in the face of a superior enemy with stunning success, Chancellorsville cost his army 1,665 killed, 9,081 wounded, and 2,018 missing. Hookers army suffered 1,606 killed, 9,672 wounded, and 5,919 missing/captured. While it is generally believed that Hooker lost his nerve during the battle, the defeat did cost him his command as he was replaced by Meade on June 28. While a great victory, Chancellorsville lost the Confederacy Stonewall Jackson who died on May 10, badly damaging the command structure of Lees army. Seeking to exploit the success, Lee began his second invasion of the North which culminated in the Battle of Gettysburg. Selected Sources Fredericksburg Spotsylvania National Military Park: Battle of ChancellorsvilleCWSAC Battle Summary: Battle of ChancellorsvilleBattle of Chancellorsville Maps
Wednesday, March 4, 2020
A History of Ancient Greek Physics
A History of Ancient Greek Physics In ancient times, the systematic study of fundamental natural laws was not a huge concern. The concern was staying alive. Science, as it existed at that time, consisted primarily of agriculture and, eventually, engineering to improve the daily lives of the growing societies. The sailing of a ship, for example, utilizes air drag, the same principle that keeps an airplane aloft. The ancients were able to figure out how to construct and operate sailing ships without precise rules for this principle. Looking to the Heavens and the Earth The ancients are known perhaps best for their astronomy, which continues to influence us heavily today. They regularly observed the heavens, which were believed to be a divine realm with the Earth at its center. It was certainly obvious to everyone that the sun, moon, and stars moved across the heaven in a regular pattern, and its unclear whether any documented thinker of the ancient world thought to question this geocentric viewpoint. Regardless, humans began identifying constellations in the heavens and used these signs of the Zodiac to define calendars and seasons. Mathematics developed first in the Middle East, though the precise origins vary depending upon which historian one talks to. It is almost certain that the origin of mathematics was for simple recordkeeping in commerce and government. Egypt made profound progress in the development of basic geometry, because of the need to clearly define farming territory following the annual flooding of the Nile. Geometry quickly found applications in astronomy, as well. Natural Philosophy in Ancient Greece As the Greek civilization arose, however, there came finally enough stability - despite the fact that there still frequent wars - for there to arise an intellectual aristocracy, an intelligentsia, that was able to devote itself to the systematic study of these matters. Euclid and Pythagoras are just a couple of the names that resonate through the ages in the development of mathematics from this period. In the physical sciences, there were also developments. Leucippus (5th century B.C.E.) refused to accept the ancient supernatural explanations of nature and proclaimed categorically that every event had a natural cause. His student, Democritus, went on to continue this concept. The two of them were proponents of a concept that all matter is comprised of tiny particles which were so small that they could not be broken up. These particles were called atoms, from a Greek word for indivisible. It would be two millennia before the atomistic views gained support and even longer before there was evidence to support the speculation. The Natural Philosophy of Aristotle While his mentor Plato (andà hisà mentor, Socrates) were far more concerned with moral philosophy, Aristotles (384 - 322 B.C.E.) philosophy had more secular foundations. He promoted the concept that observation of physical phenomena could ultimately lead to the discovery of natural laws governing those phenomena, though unlike Leucippus and Democritus, Aristotle believed that these natural laws were, ultimately, divine in nature. His was a natural philosophy, an observational science based on reason but without experimentation. He has rightly been criticized for a lack of rigor (if not outright carelessness) in his observations. For one egregious example, he states that men have more teeth than women which is certainly not true. Still, it was a step in the right direction. The Motions of Objects One of Aristotles interests was the motion of objects: Why does a rock fall while smoke rises?Why does water flow downward while flames dance into the air?Why do the planets move across the sky? He explained this by saying that all matter is composed of five elements: FireEarthAirWaterAether (divine substance of the heavens) The four elements of this world interchange and relate to each other, while Aether was an entirely different type of substance. These worldly elements each had natural realms. For example, we exist where the Earth realm (the ground beneath our feet) meets the Air realm (the air all around us and up as high as we can see). The natural state of objects, to Aristotle, was at rest, in a location that was in balance with the elements of which they were composed. The motion of objects, therefore, was an attempt by the object to reach its natural state. A rock falls because the Earth realm is down. Water flows downward because its natural realm is beneath the Earth realm. Smoke rises because it is comprised of both Air and Fire, thus it tries to reach the high Fire realm, which is also why flames extend upward. There was no attempt by Aristotle to mathematically describe the reality that he observed. Though he formalized Logic, he considered mathematics and the natural world to be fundamentally unrelated. Mathematics was, in his view, concerned with unchanging objects that lacked reality, while his natural philosophy focused on changing objects with a reality of their own. More Natural Philosophy In addition to this work on the impetus, or motion, of objects, Aristotle did extensive studies in other areas: created a classification system, dividing animals with similar characteristics into genera.studied, in his work Meteorology, the nature not only of weather patterns but also geology and natural history.formalized the mathematical system called Logic.extensive philosophical work on the nature of mans relation to the divine, as well as ethical considerations Aristotles work was rediscovered by scholars in the Middle Ages and he was proclaimed the greatest thinker of the ancient world. His views became the philosophical foundation of the Catholic Church (in cases where it didnt directly contradict the Bible) and in centuries to come observations that did not conform to Aristotle were denounced as a heretic. It is one of the greatest ironies that such a proponent of observational science would be used to inhibit such work in the future. Archimedes of Syracuse Archimedes (287 - 212 B.C.E.) is best known for the classic story of how he discovered the principles of density and buoyancy while taking a bath, immediately causing him to run through the streets of Syracuse naked screaming Eureka! (which roughly translates to I have found it!). In addition, he is known for many other significant feats: outlined the mathematical principles of the lever, one of the oldest machinescreated elaborate pulley systems, reputedly having been able to move a full-size ship by pulling on a single ropedefined the concept of the center of gravitycreated the field of statics, using Greek geometry to find equilibrium states for objects that would be taxing for modern physicistsreputed to have built many inventions, including a water screw for irrigation and war machines that helped Syracuse against Rome in the First Punic War. He is attributed by some with inventing the odometer during this time, though that has not been proven. Perhaps Archimedes greatest achievement, however, was to reconcile Aristotles great error of separating mathematics and nature. As the first mathematical physicist, he showed that detailed mathematics could be applied with creativity and imagination for both theoretical and practical results. Hipparchus Hipparchus (190 - 120 B.C.E.) was born in Turkey, though he was a Greek. He is considered by many to be the greatest observational astronomer of ancient Greece. With trigonometric tables that he developed, he applied geometry rigorously to the study of astronomy and was able to predict solar eclipses. He also studied the motion of the sun and moon, calculating with greater precision than any before him their distance, size, and parallax. To aid him in this work, he improved many of the tools used in naked-eye observations of the time. The mathematics used indicates that Hipparchus may have studied Babylonian mathematics and been responsible for bringing some of that knowledge to Greece. Hipparchus is reputed to have written fourteen books, but the only direct work that remains was a commentary on a popular astronomical poem. Stories tell of Hipparchus having calculated the circumference of the Earth, but this is in some dispute. Ptolemy The last great astronomer of the ancient world was Claudius Ptolemaeus (known as Ptolemy to posterity). In the second century C.E., he wrote a summary of ancient astronomy (borrowed heavily from Hipparchus - this is our main source for knowledge of Hipparchus) which came to be known throughout Arabia asà Almagestà (the greatest). He formally outlined the geocentric model of the universe, describing a series of concentric circles and spheres upon which other planets moved. The combinations had to be exceedingly complicated to account for the observed motions, but his work was adequate enough that for fourteen centuries it was seen as the comprehensive statement on heavenly motion. With the fall of Rome, however, the stability that supports such innovation died out in the European world. Much of the knowledge obtained by the ancient world was lost during the Dark Ages. For example, of the 150 reputed Aristotelian works, only 30 exist today, and some of those are little more than lecture notes. In that age, the discovery of knowledge would lie to the East: to China and the Middle East.
Monday, February 17, 2020
Optional Essay Example | Topics and Well Written Essays - 500 words - 2
Optional - Essay Example The transistors in the processing chips have continually reduced in size leading to the possibility of measuring them on basis of atomic scale. According to Hagar, 2011, the atomic scale perception of transistors allows QC to deploy quantum mechanics that are governed by wave and relativity laws. While digital computing uses bits, QC uses qubits. A bit represents 0 or 1. A qubit represents 0, 1 and any other superposition possible from the qubit values. This implies that while bits can only contain a particular value, qubits contain a vast amount of values. It is worth noting that QC is capable of undertaking multiple calculations while conventional computing would only partake to one calculation at a time. In addition, QC processes large volumes of data at the same time. It swiftly and accurately solves large relative mathematical problems such as the nondeterministic polynomial (NP) calculations. Chemistry uses the computer to model medicine molecules that are very sophisticated. In order to achieve this, complex calculations (Schrodinger Equation) guide in developing the model structure. The complexity of the medicine structure doubles with each electron added to the basic structure, which is a building block, such that there is a limit past which the conventional computing mechanism is overwhelmed. Currently, computers are only able to model molecular structure not exceeding 300 electrons. Quantum computing can solve SE equations with more than 30 electrons due to its ability to integrate, float and portray basic vast values as mere constitutes to infinite combinations. Systems rely on certain features of data encryption to safeguard sensitive information in banking or transaction activities. RSA is the unbreakable encryption system recognized today because it uses about 300 character integers to encode data. Any attempts to deceiver the encryption require large
Monday, February 3, 2020
Paper 4 uses at least two quotations from a secondary source found in Essay
Paper 4 uses at least two quotations from a secondary source found in the Literature Resource Center database - Essay Example s to do with motherhood, and mother and daughter relationships, it focuses more on the struggle and necessity for determining oneââ¬â¢s own self, in terms of identity and freedom of choice. Olsenââ¬â¢s characters, mother and daughter, depict two people desperately striving to find their ââ¬Ëselfââ¬â¢, independent of each other, and within the realms of a society that continually places expectations on its people, especially women. The narrator embarks on a valuation of her role as a mother, which includes ââ¬Å"her own responsibility, her own failure, and finally her need to reaffirm her own autonomy as a separate human being who cannot be defined solely through her parental role.â⬠(Frye p.130) Emily, the daughter grows from a small sickly, innocuous child and teenager, lacking in self confidence, to a nineteen year old who realizes her ââ¬Ëselfââ¬â¢ through comedy and is finally happy in her ability to make her own choices. The entire story is seen from the narratorââ¬â¢s ââ¬â the motherââ¬â¢s perspective, wherein she provides a sequential accounting of her past; this past life description is often interrupted by reference to present needs, "Ronnie is calling. He is wet and I change him," (611) which helps to illustrate the never ending work and her responsibilities involved in being a mother and the lack of time for her to even gather her thoughts for a moment, ââ¬Å"â⬠¦and there will be an interruption and I will have to gather it all together again.â⬠(608) The narrator provides an insight into the hardships of motherhood and her plight in having to raise her daughter on her own during the depression, ââ¬Å"I was nineteen. It was pre-relief, pre-WPA world of the depression,â⬠(609) and the inadequacies of child care, ââ¬Å"when she [her daughter] was eight months old I had to leave her â⬠¦ with the woman downstairs,â⬠(609) and ââ¬Å"the only wayâ⬠she ââ¬Å"could hold a jobâ⬠(609) was by placing her daughter in an inadequate nursery, but ââ¬Å"it was the only place there was.ââ¬
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