Flea By John Donne Essays - John Donne, , Term Papers

Flea By John Donne Conceits on John Donne's "The Flea" John Donne was born into an old Roman Catholic family. At age 11 he entered the University of Oxford, where he studied for three years. He spent the next three years at the University on Cambridge, but took no degree at either university. In 1593, Donne's younger brother died in prison after being arrested for harboring a priest. Donne relinquished his Roman Catholic faith and joined the Anglican Church. His first book of poems, Satires, was written during this period and was considered one of Donne's most important literary efforts. Songs and Sonnets was also written about this same time. Donne sat in Queen Elizabeth's last parliament until 1601, when he secretly married seventeen-year-old Anne More, and was thereby imprisoned. During the next few years Donne made a meager living as a lawyer. As Donne approached forty, he published two anti-Catholic polemics that pledged an oath of allegiance to James I, king of England, and won him the favor of the king. He was appointed Royal Chaplain later that year. In due course, he was appointed Reader in Divinity at Lincoln's Inn Anne Donne died in 1617, aged thirty-three after giving birth to their twelfth child. Donne continued to write poetry. In 1621 James I appointed him dean of Saint Paul's Cathedral; he held that position until his death.

The Invasion of Normandy in World War II (D-Day)

The Invasion of Normandy in World War II (D-Day) The Invasion of Normandy began on June 6, 1944, during World War II (1939-1945). Commanders Allies General Dwight D. EisenhowerGeneral Bernard MontgomeryGeneral Omar BradleyAir Chief Marshal Trafford Leigh-MalloryAir Chief Marshal Arthur TedderAdmiral Sir Bertram Ramsay Germany Field Marshal Gerd von RundstedtField Marshal Erwin Rommel A Second Front In 1942, Winston Churchill and Franklin Roosevelt issued a statement that the western allies would work as quickly as possible to open a second front to relieve pressure on the Soviets. Though united in this goal, issues soon arose with the British who favored a thrust north from the Mediterranean, through Italy and into southern Germany. This approach was advocated by Churchill who also saw a line of advance from the south as placing British and American troops in a position to limit the territory occupied by the Soviets. Against this strategy, the Americans advocated a cross-Channel assault which would move through Western Europe along the shortest route to Germany. As American strength grew, they made it clear that this was the only approach they would support. Codenamed Operation Overlord, planning for the invasion began in 1943 and potential dates were discussed by Churchill, Roosevelt, and Soviet leader Joseph Stalin at the Tehran Conference. In November of that year, planning passed to General Dwight D. Eisenhower who was promoted to Supreme Commander of the Allied Expeditionary Force (SHAEF) and given command of all Allied forces in Europe. Moving forward, Eisenhower adopted a plan begun by the Chief of Staff of the Supreme Allied Commander (COSSAC), Lieutenant General Frederick E. Morgan, and Major General Ray Barker. The COSSAC plan called for landings by three divisions and two airborne brigades in Normandy. This area was chosen by COSSAC due to its proximity to England, which facilitated air support and transport, as well as its favorable geography. The Allied Plan Adopting the COSSAC plan, Eisenhower appointed General Sir Bernard Montgomery to command the invasions ground forces. Expanding the COSSAC plan, Montgomery called for landing five divisions, preceded by three airborne divisions. These changes were approved and planning and training moved forward. In the final plan, the American 4th Infantry Division, led by Major General Raymond O. Barton, was to land at Utah Beach in the west, while the 1st and 29th Infantry Divisions landed to the east on Omaha Beach. These divisions were commanded by Major General Clarence R. Huebner and Major General Charles Hunter Gerhardt. The two American beaches were separated by a headland known as Pointe du Hoc. Topped by German guns, capture of this position was tasked to Lieutenant Colonel James E. Rudders 2nd Ranger Battalion. Separate and to the east of Omaha were Gold, Juno, and Sword Beaches which were assigned to the British 50th (Major General Douglas A. Graham), Canadian 3rd (Major General Rod Keller), and British 3rd Infantry Divisions (Major General Thomas G. Rennie) respectively. These units were supported by armored formations as well as commandos. Inland, the British 6th Airborne Division (Major General Richard N. Gale) was to drop to the east of the landing beaches to secure the flank and destroy several bridges to prevent the Germans from bringing up reinforcements. The US 82nd (Major General Matthew B. Ridgway) and 101st Airborne Divisions (Major General Maxwell D. Taylor) were to drop to the west with the goal of opening routes from the beaches and destroying artillery that could fire on the landings (Map). The Atlantic Wall Confronting the Allies was the Atlantic Wall which consisted of a series of heavy fortifications. In late 1943, the German commander in France, Field Marshal Gerd von Rundstedt, was reinforced and given noted commander Field Marshal Erwin Rommel. After touring the defenses, Rommel found them wanting and ordered that they be greatly expanded. Having assessed the situation, the Germans believed that the invasion would come at the Pas de Calais, the closest point between Britain and France. This belief was encouraged by an elaborate Allied deception scheme, Operation Fortitude, which suggested that Calais was the target. Split into two major phases, Fortitude utilized a mix of double agents, fake radio traffic, and the creation of fictitious units to mislead the Germans.  The largest fake formation created was the First US Army Group under the leadership of Lieutenant General George S. Patton.  Ostensibly based in southeastern England opposite Calais, the ruse was supported by the construction of dummy buildings, equipment, and landing craft near likely embarkation points. These efforts proved successful and German intelligence remained convinced that the main invasion would come at Calais even after landings commenced in Normandy.   Moving Forward As the Allies required a full moon and a spring tide, possible dates for the invasion were limited. Eisenhower first planned to move forward on June 5, but was forced to delay due to poor weather and high seas. Faced with the possibility of recalling the invasion force to port, he received a favorable weather report for June 6 from Group Captain James M. Stagg. After some debate, orders were issued to launch the invasion on June 6. Due to the poor conditions, the Germans believed that no invasion would occur in early June. As a result, Rommel returned to Germany to attend a birthday party for his wife and many officers left their units to attend war games at Rennes. The Night of Nights Departing from airbases around southern Britain, the Allied airborne forces began arriving over Normandy. Landing, the British 6th Airborne successfully secured the Orne River crossings and accomplished it objectives including capturing the large artillery battery complex at Merville. The 13,000 men of the US 82nd and 101st Airbornes were less fortunate as their drops were scattered which dispersed units and placed many far from their targets. This was caused by thick clouds over the drop zones which led to only 20% being marked correctly by pathfinders and enemy fire. Operating in small groups, the paratroopers were able to achieve many of their objectives as the divisions pulled themselves back together. Though this dispersal weakened their effectiveness, it caused great confusion among the German defenders. The Longest Day The assault on the beaches began shortly after midnight with Allied bombers pounding German positions across Normandy. This was followed by a heavy naval bombardment. In the early morning hours, waves of troops began hitting the beaches. To the east, the British and Canadians came ashore on Gold, Juno, and Sword Beaches. After overcoming initial resistance, they were able to move inland, though only the Canadians were able to reach their D-Day objectives. Though Montgomery had ambitiously hoped to take the city of Caen on D-Day, it would not fall to British forces for several weeks. On the American beaches to the west, the situation was very different. At Omaha Beach, US troops quickly became pinned down by heavy fire from the veteran German 352nd Infantry Division as the pre-invasion bombing had fallen inland and failed to destroy the German fortifications. Initial efforts by the US 1st and 29th Infantry Divisions were unable penetrate the German defenses and troops became trapped on the beach. After suffering 2,400 casualties, the most of any beach on D-Day, small groups of US soldiers were able to break through the defenses opening the way for successive waves. To the west, the 2nd Ranger Battalion succeeded in scaling and capturing Pointe du Hoc but took significant losses due to German counterattacks. On Utah Beach, US troops suffered only 197 casualties, the lightest of any beach, when they were accidentally landed in the wrong spot due to strong currents.  Though out of position, the first senior officer ashore, Brigadier Theodore Roosevelt, Jr., stated that they would start the war from right here and directed subsequent landings to occur at the new location.  Quickly moving inland, they linked up with elements of the 101st Airborne and began moving towards their objectives. Aftermath By nightfall on June 6, Allied forces had established themselves in Normandy though their position remained precarious. Casualties on D-Day numbered around 10,400 while the Germans incurred approximately 4,000-9,000. Over the next several days, Allied troops continued to press inland, while the Germans moved to contain the beachhead. These efforts were frustrated by Berlins reluctance to release reserve panzer divisions in France for fear that Allies would still attack at Pas de Calais. Continuing on, Allied forces pressed north to take the port of Cherbourg and south towards the city of Caen. As American troops fought their way north, they were hampered by the bocage (hedgerows) that crisscrossed the landscape. Ideal for defensive warfare, the bocage greatly slowed the American advance. Around Caen, British forces were engaged in a battle of attrition with the Germans. The situation did not change radically until the US First Army broke through the German lines at St. Lo on July 25 as part of Operation Cobra. Resources and Further Reading US Army: D-DayUS Army Center for Military History: Invasion of Normandy

Two problems related to Climate Change Essay Example | Topics and Well Written Essays - 1000 words

Two problems related to Climate Change - Essay Example Although this problem is a global issue, the impacts vary across the globe since some areas experience more adverse effects than others do. Social and environmental versions problems of climate change are the most notorious, as they not only pose a threat to food security and survival of organisms, but also affects the surrounding and lifestyle of human beings. Thus, social and environmental problems share several similarities, but also differ in some instances. Social and environmental issues are similar since they both have adverse effects on human health. Climate change is a problem because it causes environmental harms such as increased and severity of heat waves resulting from global warming, which leads the loss of lives (McNall 5). Modest warming of the earth that has been occurring since 1970s is responsible for many deaths annually. On the social front, health systems are stretched as they attempt to cope with the increasing incidences of heat-related problems. Additionally, adverse climatic conditions such as strong winds and drought damage health infrastructure and buildings in the society. As a result, the outcome undermines the provision of quality health services to the community. Drought is also directly responsible for changes in the human health system, as it causes starvation and deterioration of health in human beings. In addition, both issues result in food problem. Increased temperatures in the atmosphere caused by climate change create an opportunity for various disease causing organisms to contaminate food. The cases of bacteria borne disease are frequently high during summer months. Additionally, climatic changes result in social issues such as poverty. Poverty is the primary reason for inequalities in the society. The poor, who survive on less than $2, are the most affected. These people cannot cope with the climate shocks since they lack money. Due to this, in case of drought they have no alternative, but to cut down

Logistics Problems Generated by Crossrail and Their Solutions Essay

Logistics Problems Generated by Crossrail and Their Solutions - Essay Example to be able to solve these problems it is necessary to identify the root cause of the problem and try to tackle it so that it does not come up again. Crossrail has managed to realize some of these problems and has already provided solutions to them. This paper will give a brief introduction to crossrail and its intended advantages, it will then discuss the logistic problems that will be generated by the construction work, and it will follow by outlining solutions to these problems before making a conclusion. Introduction Crossrail is an ambitious project to build a major railway link in central London. The name is used to refer to the first two routes which are under the responsibility of Crossrail Limited. It is based on a different and new east-west tunnel with a central section from Paddington to Liverpool street station. This project was approved in 2007 after a very long time of debate. The crossrail act received royal assent in July 2008 (Crossrail, 2011). The services offered w ill complement the enhanced north-south Thames link route. Ten-car trains are expected to run at frequencies of up to 24 trains per hour in each of the channels through the central tunnel section. In the original plan the first train was scheduled to run in 2017 but in a comprehensive review in 2010 that saw the saving of ?1 billion changed the initial plan to 2018. Fig. 1 Crossrail route Source: http://en.wikipedia.org/wiki/File:CrossrailLine1Map.svg#filehistory Crossrail benefits The benefits of constructing the cross rail are many. The first benefit is easing transport problem in London which has been a huge headache for London. The second benefit is that it will provide better access to the capital for over 750,000 workers who are said to commute daily into London. Lastly the project is also aimed at providing job opportunities to many people who will be employed in the in the construction process and after the completion of the project to manage the various services offered by the train service. It is estimated that crossrail will generate up to 14,000 jobs when the construction reaches peak (Crossrail, 2011). Fig 2 source: http://forum.skyscraperpage.com/showthread.php?t=158506&page=7 Fig 3 source: http://www.thameslinkprogramme.co.uk/cms/pages/view/33 Fig 4 source: http://www.ianvisits.co.uk/flickr_api/set_list.php?page=2&uid=72157627734615808&title=Crossrail%20Royal%20Oak%20Portal Fig 5 finished product Source: http://www.ianvisits.co.uk/flickr_api/set_list.php?page=2&uid=72157627734615808&title=Crossrail%20Royal%20Oak%20Portal Logistics in construction Logistics refers to the efficient transfer of goods and services from the source of supply through that manufacturer to the consumer in a cost effective manner that will provide service to the customer (Rushton, Croucher, & Baker, 2006, p. 6). Logistic management tries to minimize costs by providing a cost effective system across the whole process and ensuring the evaluation of facilities and issues tha t may have any impact on logistic costs and make the product conform to the customers’ requirements. Many construction projects ranging from the small projects to the major projects like the crossrail project face many logistic problems that contractors work hard every day to avoid. The proper management of logistic issues will either lead to the successful implementation of a project or lead to its failure. Research has shown that effective logistic management has rarely been applied in construction

A Retail Strategy Used By Apple Inc Essay Example | Topics and Well Written Essays - 2500 words

A Retail Strategy Used By Apple Inc - Essay Example The researcher states that the developing force of retail rivalry because of the rise of new contenders, arrangements, and innovations, and moves in client needs is constraining retailers to give more consideration regarding long-haul vital plans. As the retail administration choice making procedure demonstrates, a retailing technique is an extension between understanding the world retailing that is, the dissection of the retail environment, the strategic stock administration, and store operations embraced to execute the retail methodology. The retail procedure gives the course retailers need to strategize successfully with their market environment, clients, and contenders. The last component of a retail strategy is the retailer's methodology to build a feasible competitive edge and this is one of the core competencies of Apple. Any business action that a retailer takes part in can be the premise for preference; however, a few favorable circumstances are practiced over a long period, though contenders can copy others practically quickly. Making leeway implies that the retailer, essentially, develops a boundary around its position in a retail showcase. At the point when the boundary is wide, it will be hard for contenders outside the divider to enter the business sector and seek the retailers target clients and a decent case is Apple Inc's retail procedure. Over the previous years, Apple stores have ended up much more enthusiastic, from an area inside the Louver in Paris into one spotted under a 40-foot-high glass barrel in Shanghai. Working for an Apple store can be an aggressive process typically needing no less than two rounds of interviews. Candidates are addressed about their initiative and critical thinking aptitudes, and additionally their eagerness for Apple items as supported by a few presents and previous Apple store representatives. While most retailers need to search out staff, retail masters say numerous Apple stores are overflowing with candidates. Once employed, employees are prepared broadly and are taken to classes that apply Apple standards of client services.

The Customer Driven Marketing Strategy Marketing Essay

The Customer Driven Marketing Strategy Marketing Essay The marketing strategy explains the companys overall mission statement and future goals. Mostly marketing strategies are set with careful consideration by senior management. Marketing strategy must in cooperate the mission statement of the business. Shankar and Carpenter (2012, p.2) views marketing strategy as a broad plan of managerial initiatives and actions relating an organization to its customers and markets. Further states that there are three key aspects of marketing strategy as follows: Marketing strategy focuses on the strategic decisions necessary to allocate resources. It concerns managerial actions that have long-term effects. Decisions relating to marketing strategy are made by marketing executives in an organization and implemented by many others through the organization and beyond. Following are the four major activities involved in managing a customer-driven marketing strategy and the marketing mix are, i.e. Segmentation Targeting Differentiation Positioning Consumers are the centre of all marketing activity. The basic goals for all businesses are to create value for customers and build a strong profitable customer relationship. As stated by Kotler and Armstrong (2008, p.45) The marketing logic by which the company hopes to create this customer value and achieve these profitable relationships. Since the company owns the means of production it has the overall power to decide which customer to serve (segmentation and targeting) and how it will serve them (differentiation and Positioning). The business identifies the total market, then divides it into smaller segments, selects the most promising segments, and focuses on serving and satisfying customers in these segments in order to secure maximum profit. Using the market strategy the company then designs an integrated marketing mix made of factors under its control .i.e. Product , Place, Price, Promotion The four Ps. In order to find the best marketing strategy the company then uses market analysis, planning, implementation, and control. Through these activities fulfills the changes in demand from consumer behavior and adopts to the marketing environment. As stated by Mullins and Larreche (2006, p.3) IBMs competitive strategy was also quite consistent over the years, Given that the firm was never the lowest-cost producer in the industry, it did not try to compete with low prices. Instead, the firm pursued a quality differentiation strategy by offering superior products backed up by excellent technical service and selling them at premium prices. Customer-Driven Marketing Strategy In order to succeed in the modern competitive marketplace companies need to be customer centered, .i.e. they must fulfill the rapidly changing demands of the customer. Companies must draw the customer from competitor business, make them brand loyal and grow them by delivering greater value. Before anything a company must understand the needs and wants of its customers, only then it can fulfill by using the marketing strategy. Thus the company must use a careful market analysis. Market Segmentation The modern market is full of many types customers, products and needs. The company then determines which demand it can fulfill best and gain maximum benefits. Consumers are grouped in various ways geographic, demographic, psychographic, and products are made to fulfill their needs and wants. As stated by Kotler and Armstrong (2008, p.46) The process of dividing a market into distinct groups of buyers who have different needs, characteristics, or behaviors, who might require separate products or marketing programs is called market segmentation. Market segmentation consists of consumers who adopt in a similar way to different marketing efforts. In the car market for example wealthy consumers own the top notch cars but still make up only one segment of the market. Then we consumers who are price conscious and make up another market segment. It would difficult to fulfill needs of both segmentations so companies focus on the needs of one segment. Market Targeting After a company has defined one of its market segments it can target different segments of consumers. Market targeting involves information of each market segment and then selecting one or more segments to enter. The company must target segments in which it can best fulfill the needs of consumers. Wise companies enter into a segment from which they can achieve success in gaining customer loyalty and sustain it over time. A company might use the strategy niche marketing and target only a few segments from which the major competitor over looked. Alternatively companies might serve different kinds of customers but with the same wants, .i.e. Coca Cola. Multi nationals may serve the needs of all market segments. Most companies enter the market serving only segment of the market but as they gain success they grow and target a range of segments. Companies that attain the most success will eventually have the means necessary to serve all segments of the market; these leading companies have the different product design for each different market segment. Market Differentiation and Positioning After a company has chosen its market segment to enter, it must be decide how it will differentiate its market offering from competitors and must have unique way of serving its chosen target segment in order to secure maximum profits. A products position is the place it has in place of its competitor in the minds of consumers. The position of the product is one of the most crucial things in order to get consumers to buy it and attain brand loyalty from them. If products were similar consumers would have no way of differentiating between products and thus there would be no need to buy it. Positioning is the business securing a unique space in the minds of consumers in comparison to competitors products. When positioning its products the company identifies the plus points it has in that segment that provides competitive advantage over competitor. The company can give greater value to customers at low prices in comparison to competitors and attain a unique position in the market and win consumer brand loyalty. If a company promises greater value then it must differentiate its product from competitors and must deliver greater value in order for the product to maintain position in minds of the consumers. Thus effective positioning begins with differentiation, actually differentiating the product so that it gives consumers more value. When a company has achieved a successful position it must make strong steps to deliver and communicate that position to target consumers. The entire marketing program of a company appreciates the chosen position strategy. Developing an integrated Marketing Mix After developing the market strategy the company begins to plan the details of the marketing mix. The marketing mix a set of controllable marketing tools that the firm uses to produce the response it wants to get back from the target market. The marketing mix is whatever a firm has the power to do in order to influence demand on its product. The marketing mix consists of the four Ps Product, Price, Place, and Promotion. Product means the goods and services combination the company the target market. Price is the amount of money customers would have to pay to obtain the product. Different companies target different range of customers i.e. luxury car makers target the wealthy consumers. Place includes the different locations the companys product is available to target consumers. Promotion means attract consumers and persuades them to buy the product. Ferrell and Hartline (2011, p.17) explains, The role of social responsibility and ethics in marketing strategy has come to the forefront of important business issues in todays economy. Our society still reverberates from the effects of corporate scandals at Enron, WorldCom, and ImClone, among others. Although these scandals make for interesting reading, many innocent individuals have suffered the consequences from these companies unethical behavior.

Indie Music :: essays research papers

I heard the term "indie" bounced around a lot these days and I wonder what the definition of indie is. I think of it as a reference to a musician, small record label or film company without an affiliation with a major corporation. I read this article by Bob Baker, the author of "Branding Yourself Online: How to Use the Internet to Become a Celebrity or Expert in Your Field" and the "Guerrilla Music Marketing Handbook." He defines I-N-D-I-E as: I - Inspired He said to embrace the indie frame of mind, you must be inspired. You have to know in your gut that music is what you are meant to do. You must become energized when writing, recording and performing your music. When this kind of natural inspiration comes over you, it's a sure sign that you're on the right path. And you will need this desire to carry you through the ups and downs of pursuing the independent music path. N - Nontraditional Indie musicians don't mind learning about what has come before, and they are happy to listen to the "rules" that others say are required to have a successful music career. However, the smartest indie artists keep their minds flexible and constantly ask questions about how the supposed "rules" of the past really apply to them. They actually develop a mindset that seeks out the road less traveled. And when they spot a good idea that's off the traditional path, they fearlessly go after it without apologies. D - Determined Successful indie artists are fixated on their goals and determined to reach them. They still leave room to veer from the original plan, when needed, but they are steadfast in their desire to produce more and better music, reach more fans, sell more CDs, etc. With this attitude, obstacles become short-term learning experiences along the road to higher levels of success. I - Innovative Being an indie means thinking outside of the proverbial box and looking at fresh opportunities from every angle. It means not promoting yourself the same way a thousand other acts have done it.

Analysis- Macbeth’s soliloquy Essay

Macbeth’s soliloquy at the start of Act 1, Scene 7, introduces us to a side of Macbeth that has not yet been portrayed earlier in the play. Here, instead of being the courageous and valiant soldier, Macbeth reveals himself to be a man who is being slowly tempted by ambition and power, though not determined enough to take the risks in order to achieve his goal, thus resulting in the repetition of â€Å"ifs† throughout the beginning of Macbeth’s soliloquy. Macbeth is also very much aware of the lack of reason for the murder of Duncan. The soliloquy effectively adds to our understanding of the internal conflict that plagues Macbeth as he struggles to determine whether or not he should kill Duncan, who is a virtuous man as well as his kinsman and king. He believes that it is against the nature of man to kill someone who is of such a status and relation to him and that it is immoral to do so, â€Å"he’s here in double trust: first, as I am his kinsman and his subject, strong both against the deed† and that it would be a breech of Duncan’s trust in him if he decides to go through with the murder. We see Macbeth’s reluctance to murder Duncan himself as he is a guest in his own home. â€Å"†¦as his host, who should against his murderer shut the door, not bear the knife myself.† Macbeth knows that his weakness is the desire he has to seize the crown. He knows that although he does not wish to murder Duncan but for the fulfillment of his own ambition, â€Å"I have no spur to prick the sides of my intent, but only vaulting ambition†¦Ã¢â‚¬  it is something that must happen in order for Macbeth to achieve what he wants. The audience sees the conflict within Macbeth and the horrible imaginings he has for his own downfall and his fate. He knows that he is drinking from a â€Å"poisoned chalice† which symbolizes Macbeth’s yearning for moral desecration. Another aspect of Macbeth that the audience witness is the reluctance to mention the murder of Duncan. Instead, he uses euphemisms such as † it, assassination, this blow, the deed, bear the knife, his taking off, horrid deed, my intent† This gives the audience the impression that Macbeth is scared to name his fate and his intentions of murdering Duncan in fear of â€Å"jinxing† himself. Macbeth’s tone throughout his soliloquy is one of confusion, frustration and is filled with hellish images which are associated with what may become of Macbeth’s soul. â€Å"Bloody instructions, which being taught; return to plague th’inventor, deep damnation, poisoned chalice† Macbeth recognizes the guilt which may come with the murder of Duncan and we find ourselves feeling pity for him as he  struggles with morals and his own ambition. Personification and metaphors are also effective in Macbeth’s soliloquy. Through personification, various aspects of humanity such as virtues, justice, and pity have been exaggerated so that the audience may treat these aspects as humans, and feel the vulnerability of human goodness- pity is portrayed as a newborn babe, and virtues are portrayed pleading like angels. Through Macbeth’s soliloquy, the audience sees that this man, who was supposedly a virtuous, valiant person, has become a weak character, giving in to the temptations brought on by ambition, greed and power, even if it means having to abandon his morals. The audience recognizes that Macbeth is human and he is plagued with a troubled conscience but we are disappointed to see Macbeth slowly drifting towards corruption and his own downfall. He will eventually â€Å"o’erleap† himself.

Functions And Classification Of Operating Systems Essay Example

Functions And Classification Of Operating Systems Essay Example Functions And Classification Of Operating Systems Essay Functions And Classification Of Operating Systems Essay The OS is the system package that controls the overall operation of the computing machine system. It manages the affiliated hardware, provides a platform to run application plans and an interface for users to interact with the computing machine system. It is responsible for recognizing and organizing memory devices, I/O devices and treating devices. Figure 10.1 displays the function of OS in the computing machine system. An OS provides two types of interfaces: Graphical User Interface ( GUI ) and Command Line Interface ( CLI ) . An OS responds and provides services to the users. Figure 10.1: Functions of OS in the Computer System 10.1.1 Functions of OS : An OS is the indispensable package in the computing machine system. It performs several undertakings to maintain the application package, hardware devices and users of the computing machine system coordination. The OS performs the undermentioned maps: Information Management Information direction refers to the set of services used for recovering, hive awaying, modifying and canceling informations from devices. It has two subsystems, file direction and I/O direction. Process Management Procedure direction is responsible for administering CPU clip between procedures. It besides involves pull offing memory and I/O resources across the procedure in the computing machine system. Memory Management Memory direction controls memory use. At any given case, memory direction keeps path available infinite to hive away the information. Application Programing Interface ( API ) The API assigns entree to application package on all connected hardware devices. User Interface User Interface provides interaction between the computing machine system and users. 10.2 Development of OS Operating systems evolved in seven stages. The six stages viz. unfastened store, batch processing, concurrent execution, timesharing, personal computer science and distributed systems, changed the manner users accessed the OS. Concurrent programming brings multiple innovations to do resource direction effectual. Table 10.2 shows stages and proficient development of an OS. An development of OS started from 1954, when Computer system had non OS, users use to run computing machine system manually. Phases of OS development of are as follows: Open Shop Open Shop introduced IBM 701 that was implemented the on celebrated IBM 701 machine. First user has to do apparatus as per the demand for each computer science. However, in this stage clip and money wasted in puting up machine manual. Users got fixed clip for calculating, although most of the clip was spent puting up the machine manually. Batch Processing Wastage of clip and money in the unfastened store stage was a consequence of user engagement. In this stage, it was clear that normal users were to be kept off from the calculating procedure. This stage besides revealed that the OS was capable of scheduling. Normal users put their occupations on a clout card merely to be processed by computing machine professionals subsequently. The BKS system was the released in this stage. Multiprogramming The aim of concurrent execution was to maintain the CPU every bit busy as possible to use its processing capacity wholly. At the initial phase of multiprogramming stage, the thought was to maintain following plan ready in the memory from where the CPU could take it up instantly. However, in the same stage, hardware interrupts were introduced. Hardware interrupts facilitated shift of procedures. The construct of hardware interrupts made multiprogramming more successful. It besides permitted I/O devices and treating devices to work at the same time. This procedure was called coincident peripheral operation on-line. The constructs of job-scheduling, demand paging, practical memory were introduced in the same stage. Atlas supervisor, B5000 system, Exec II system and Egdon systems were introduced in the concurrent execution stage. Time Sharing Time-sharing allowed processors to go to to petitions from other users while one user was busy executing some I/O map. This manner the CPU could go to to multiple procedures every bit good as users in lesser clip spans. CTSS, Multics File system, Titan File system and UNIX were introduced in this stage. Concurrent The concurrent stage introduced the characteristic of running multiple undertakings at a clip called as multitasking. THE system, RC 4000 system, Venus system, Boss 2 system, Solo system, and Solo Program Text, were the concurrent OS introduced back so. Personal Computing In the personal computer science stage of development, user convenience was on the precedence than recourse direction. The GUI based OS and mouse based interactivity were introduced in this stage merely. OS, Alto system, Pilot system and star user interface were introduced in this stage. Distributed Systems This stage includes computer-networking constituents that enable message go throughing within computing machines and distant process call. WFS File waiters, Unix United RPC, Unix United system and Amoeba systems were launched in this stage. Phase Technical Development Operating System Phase 1: Open Shop An thought of operating systems 1. IBM 701 unfastened store ( 1954 ) Phase 2: Batch Processing Tape batching First-In First-Out and scheduling 2. BKS system ( 1961 ) Phase 3: Multiprogramming Processor multiplexing, Indivisible operations, Demand paging, Input/output spooling, Priority programming and Distant occupation entry 3. Atlas supervisor ( 1961 ) 4. B5000 system ( 1964 ) 5. Exec II system ( 1966 ) 6. Eldon system ( 1966 ) Phase 4: Timesharing Coincident user, interaction and On-line file systems 7. CTSS ( 1962 ) 8. Multics File system ( 1965 ) 9. Titan File system ( 1972 ) 10. Unix ( 1974 ) Phase 5: Concurrent Programing Hierarchical systems, Extensile meats, Parallel programming constructs and Secure analogue linguistic communications 11. THE system ( 1968 ) 12. RC 4000 system ( 1969 ) 13. Venus system ( 1972 ) 14. Boss 2 system ( 1975 ) 15. Solo system ( 1976 ) 16. Solo plan text ( 1976 ) Phase 6: Personal Computer science Graphic user interfaces 17. OS 6 ( 1972 ) 18. Alto system ( 1979 ) 19. Pilot system ( 1980 ) 20. Star user interface ( 1982 ) Phase 7: Distributed Systems Distant waiters 21. WFS File waiter ( 1979 ) 22. Unix United RPC ( 1982 ) 23. Unix United system ( 1982 ) 24. Amoeba system ( 1990 ) Table 10.1: Development of OS 10.3 OS Kernel and shell Every OS consists of a meat and shell. The shell is the user interface, either a CLI or a GUI. This allows the user to login and utilize the computing machine system. The meat is the nucleus of an OS. The OS meat is more complex and is hard to work with straight, therefore the meat is wrapped in a shell A meat consists of the followers: File Manager- A file director provides interface for user to work with file. It performs actions on files such as create, edit, rename, unfastened, edit and so on.. In add-on, it maintains size and permissions about files that are available on the system. Device Driver . Device driver is a plans that controls a specific hardware devices. Each device has alone driver that converts user petition for device to specific cryptography. Memory Manager The memory director responsible for optimal use of the system memory. It allocates and de-allocates memory for hive awaying informations and plans. Scheduler- The scheduler maintains records of present procedures put to deathing by the OS and adds new procedures to the OS. Dispatcher The starter manages procedures. It divides clip into little part such as 50 second, when the clip part is over ; dispatcher allows following procedure to run. 10.4 Categorization of OS Oss have been classified based on parametric quantities such as figure of users that at the same time used the computing machine system, the figure of procedure that OS performs at a clip, and the figure of togss that OS can manage at a clip. The categorization is as follows: Single-User A single-user operating system allows merely one user to login the computing machine system. Single-user OS are intended for place users merely. Multi-user Thie multi-user OS allows multiple users to login and use the computing machine system. In this instance, the OS allocates different resources for each user so that any a job with one user does non impact other users. Single-task The single-task OS permits merely one procedure to run at a clip. Multi-tasking The multi-tasking OS permits multiple plans to put to death at the same clip. Users can run more than one undertaking at a clip. However, as multiple procedures runs at the same clip, this type of OS requires more memory. Multi-tasking OS semen in two theoretical accounts. They are: Time-sharing operating system -Time-sharing OSs usage algorithms to portion CPU clip between multiple procedures. This method creates an semblance that the CPU is put to deathing multiple procedures at the same time. Real-time operating system The real-time operating system is used to command industrial systems and scientific instruments. This type of OS manages computing machine system resources in a manner that specific operation should put to death in precise clip, every time.. 10.5 Operational overview On the boot, an OS makes certain that the system has the required hardware and package. When a user petitions for a resource such as IO or any application plan, the OS cheques permission and so decides whether to allow that petition or deny it. In a multi-user system, the OS agendas resources in a manner that ensures their handiness on petition. The OS records mistakes happening in the procedure. The OS should enter the mistake. The OS supports networking operations excessively. Devicess involved in OS operation are as follows: CPU A computing machine system supports several maps that should run at the same time. It might possible that multiple users are running their plans at the same case. The OS ensures that each user gets sufficient CPU clip to put to death the undertaking. Memory The OS helps users topographic point and recover informations from the primary memory. The OS besides takes attention of user informations that is stored in the secondary memory. Data in the secondary memory is brought to the primary memory on user petition. I/O devices The OS facilitates communicating with all I/O devices. It uses interrupt signals for the same. 10.6 Servicess Offered by OS The major aims of an OS are to do calculating convenient, run application plans and pull off the assorted resources. To accomplish these aims OS provide several services, they are as follows: Program Execution The OS provides users with a convenient environment to put to death plans. The user merely needs to originate plan executing while the OS takes attention of memory allotment for successful executing of the plan. I/O Operations Every procedure involves I/O operations ; nevertheless, internal I/O operations are non seeable to users. OS control all I/O operations. User may alter the default flow I/O operation, therefore for security grounds user are non involved in the I/O operation. File System Manipulation File system use, enables users to make or pull strings files in the OS environment without cognizing physical features of the device. Communicationss At times procedures need to pass on with each other to interchange information. This communicating could be between procedures put to deathing on the same computing machine or processes put to deathing on different computing machine systems. A communicating service enables computing machine system to interchange the procedure with other computing machine systems. Error Detection An mistake in the computing machine system leads to misfunctioning. The OS proctors computing machine systems for mistakes. 10.7 Chapter Review Questions GUI stands for ________________ . ( A ) Graphical User Interface ( C ) Graphical User Interaction ( B ) Group and User Interaction ( D ) None of the above Autonomic nervous system: A Which map of the OS is responsible for pull offing user s informations in the computing machine system? ( A ) Memory Management ( C ) Information Management ( B ) Process Management ( D ) Application Management Ands: Degree centigrade A __________ map allows users to interact with computing machine system. ( A ) Memory Management ( C ) Application Management ( B ) User Interaction ( D ) Information Management Autonomic nervous system: Bacillus A  ­Ã‚ ­Ã‚ ­__________phase of the OS development invents hardware interrupts. ( A ) Timesharing ( C ) Multi Programing ( B ) Concurrent Programing ( D ) None of the above Autonomic nervous system: Degree centigrade Which of the followers is an operating system s nucleus bed? ( A ) Kernels ( C ) Shell ( B ) Device Drivers ( D ) None of these Autonomic nervous system: A Which constituent of the meat maintains records of current procedures, adds new procedures, and removes complex procedures. ( A ) Device Drivers ( C ) Starter ( B ) Scheduler ( D ) None of these Autonomic nervous system: Bacillus Which of the following are theoretical accounts of multitasking OS? ( A ) Timesharing OS ( C ) Real-time OS ( B ) Thread sharing OS ( D ) Real-process OS Autonomic nervous system: A and C 8. CLI stands for ________________________ . ( A ) Command Line Interaction ( C ) Common Line Interface ( B ) Command Line Interface ( D ) Common Line Interaction Autonomic nervous system: Bacillus 9. Which service of an OS allows users to pass on with other computing machines? ( A ) Communicationss ( C ) Program Execution ( B ) Mistake Detection ( D ) I/O Operationss Autonomic nervous system: A 10. A __________component of OS kernel is responsible for pass oning with devices. ( A ) File Manager ( C ) Device Drivers ( B ) Device director ( D ) None of these Autonomic nervous system: Degree centigrade 10.7.1 Answers 1. Angstrom 2. C 3. Bacillus 4. C 5. Angstrom 6. Bacillus 7. A and C 8. Bacillus 9. Angstrom 10. C Drumhead In the chapter, Introduction to Operating System, you learnt about: OS and undertakings performed by the OS Development and categorization of OSs Different maps of the OS Servicess offered by the OS

Understanding the Italian Present Subjunctive Tense

Understanding the Italian Present Subjunctive Tense Language is fluid, and its usage is constantly changing. A case in point is the subjunctive (il congiuntivo), which in English is rapidly becoming extinct. Phrases like I suggest you go home immediately and Robert wishes that you open the window are not frequently used anymore. In Italian, though, the subjunctive tense is alive and flourishing, both in speaking and writing. Rather than stating facts, it expresses doubt, possibility, uncertainty, or personal feelings. It can also express emotion, desire, or suggestions. Subjunctive Tense Phrases Typical phrases that call for the subjunctive tense include: Credo che... (I believe that...)Suppongo che... (I suppose that...)Immagino che... (I imagine that...)È necessario che... (It is necessary that...)Mi piace che... (Id like that...)Non vale la pena che... (Its not worth it that...)Non suggerisco che... (Im not suggesting that...)Puà ² darsi che... (Its possible that...)Penso che... (I think that...)Non sono certo che... (Im not sure that...)È probabile che... (It is probable that...)Ho limpressione che... (I have the impression that...) Certain verbs such as suggerire (to suggest), sperare (to hope), desiderare (to wish), and insistere (to insist) require use of the subjunctive. The table below provides examples of three regular Italian verbs (one of each class) conjugated in the present subjunctive tense. CONJUGATING ITALIAN VERBS IN THE PRESENT SUBJUNCTIVE TENSE PARLARE FREMERE CAPIRE io parli frema capisca tu parli frema capisca lui, lei, Lei parli frema capisca noi parliamo fremiamo capiamo voi parliate fremiate capiate loro, Loro parlino fremano capiscano Conjugating the Present Subjunctive Tense The present subjunctive is the verb form of the Italian language in the phrase generally used to indicate secondary events seen as real or not objectives (Spero che voi siate sinceri) or not relevant. This verb form is combined by adding to the root of the verb endings provided in Italian grammar in the three conjugations. Since the subjunctive must generally after the conjunction that, this is often repeated. As with the conjugation of the present tense, some verbs of the third conjugation - such verbs incoativi - involving the use of the suffix -isc-: che io finisca, che tu finisca, che egli finisca, che noi finiamo, che voi finiate, che essi finiscano. Almost all irregular shapes can be, by way recipe, derived from the first person of the verb in the present tense: I am of the indication vengo can be formed subjunctive - che io venga (che tu venga, che egli venga, che noi veniamo, che voi veniate, che essi vengano); dallindicativo muoio puà ² essere formato il congiuntivo che io muoia (che tu muoia eccetera); dallindicativo faccio puà ² essere formato congiuntivo che io faccia; similmente: che io dica, vada, esca, voglia, possa eccete.

Acetabular fractures in the elderly Essay Example | Topics and Well Written Essays - 4750 words

Acetabular fractures in the elderly - Essay Example According to some studies, fractures of acetabulum account for more than 24% of operative fractures n the elderly population (5). Apart from the increase in the elderly population, the rate of acetabular fractures in this segment of population has also increased (5). Historically, acetabular fractures were treated on conservative lines. The management involved prolonged immobilization, casting, traction and pelvic slings. Advances in surgical technique, imaging modalities and our over all understanding of pelvic anatomy have opened ways for better operative management of acetabular fractures. Increased numbers of patients are now candidates to operative treatment owing to reduction in peri- operative morbidity and mortality, along with advances in anesthesia and medical management of multiple co-morbidities. As opposed to historical conservative management that involved prolonged immobilization, operative management provides the platform for early patient mobilization. Despite these advances, treatment of acetabular fractures continues to pose significant challenge to the orthopedic surgeons. This article will review various methods of managing and treating these fractures and their respective outcomes. Fractures of the acetabulum can result from various mechanisms. Majority of fractures involve low to moderate energy injuries and are due to fall from a standing position or short ladder (5 18 23). As the result of a fall, when greater trochanter strikes the ground, the pressure due to the hit drives the femoral head in an antero-medial direction into the anterior column and quadrilateral plate. The displacement of these structures results in medial subluxation of the femoral head which goes beneath the intact weight bearing dome of acetabulum. The weight bearing dome is defined as the superior 10 mm of the acetabulum on axial CT imaging, or the 45 degree roof arc as described by

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