Title Of Paper CASE Tools Essays - Product Development

Title of Paper : CASE tools Grade Received on Report : 95% CASE Tools What are CASE Tools ? Computer Aided Software Engineering (CASE) tools provide automated support for many of the systems analysis and design methods available to the information systems developer. CASE tools provide an environment which automates many time-consuming aspects of the systems development process, including: drawing and redrawing diagrams cross checking usage of elements across the system model generation of system documentation generation of code structures and database schemas What are the benefits of CASE tools? Less effort spent on document administration, such as redrafting diagrams increased quality from extensive cross checking provided in CASE tools subsequent potential for reduction in end-to-end system development time automated system documentation generation . History on CASE Tools Since the early days of writing software, there has been an awareness of the need for automated tools to help the software developer. Initially the concentration was on program support tools such as translators, compilers, assemblers, macro processors, and linkers and loaders. However, as computers became more powerful and the software that ran on them grew larger and more complex, the range of support tools began to expand. In particular, the use of interactive time-sharing systems for software development encouraged the development of program editors, debuggers, code analyzers, and program- pretty printers. As computers became more reliable and in greater use, the need for a broader notion of software development became apparent. Software development came to be viewed as: ?A large-scale activity involving significant effort to establish requirements, design an appropriate solution, implement that solution, test the solution's correctness, and document the functionality of the final system. ?A long-term process producing software that requires enhancement through out its lifetime. The implications of this are that the structure of the software must enable new functionality to be added easily, and detailed records of the requirements, design, implementation, and testing of the system must be kept to aid maintainers of the software. In addition, multiple versions of all artifacts produced during a project must be maintained to facilitate group development of software systems. ?A group activity involving interaction among a number of people during each stage of its life. Groups of people must be able to cooperate, in a controlled manner, and have consistent views of the state of the project. CASE Tools Environment: The first generation of CASE tool developers concentrated to a large extent on the automation of isolated tasks such as document production, version control of source code, and design method support. While successes have been achieved in supporting such specific tasks, the need for these `islands of automation' to be connected has been clearly recognized by many first generation CASE tool users. For example, a typical development scenario requires that designs be closely related to their resultant source code, that they be consistently described in a set of documentation, and that all of these artifacts be under centralized version control. The tools that support the individual tasks of design, coding, documentation, and version control must be integrated if they are to support this kind of scenario effectively. A CASE environment is a collection of CASE tools and other components together with an integration approach that supports most or all of the interactions that occur among the environment components, and between the users of the environment and the environment itself.

Introduction to Post-Roman Britain

Introduction to Post-Roman Britain In response to a request for military assistance in 410, Emperor Honorius told the British people they would have to defend themselves. The occupation of Britain by Roman forces had come to an end. The next 200 years are the least well-documented in the recorded history of Britain. Historians must turn to archaeological finds to glean an understanding of life in this time period; but unfortunately, without documentary evidence to provide names, dates, and the details of political events, the discoveries can only offer a general, and theoretical, picture. Still, by piecing together archaeological evidence, documents from the continent, monument inscriptions, and the few contemporary chronicles such as the works of Saint Patrick and Gildas, scholars have gained a general understanding of the time period as set forth here. The Map of Roman Britain in 410 shown here is available in a larger version. The People of Post-Roman Britain The inhabitants of Britain were at this time somewhat Romanized, especially in urban centers; but by blood and by tradition they were primarily Celtic. Under the Romans, local chieftains had played an active role in the government of the territory, and some of these leaders took up the reigns now that the Roman officials were gone. Nevertheless, cities began to deteriorate, and the population of the entire island may have declined, in spite of the fact that immigrants from the continent were settling along the east coast. Most of these new inhabitants were from Germanic tribes; the one most often mentioned is Saxon. Religion in Post-Roman Britain The Germanic newcomers worshipped pagan gods, but because Christianity had become the favored religion in the empire in the preceding century, most Britons were Christian. However, many British Christians followed the teachings of their fellow Briton Pelagius, whose views on original sin were condemned by the Church in 416, and whose brand of Christianity was therefore considered heretical. In 429, Saint Germanus of Auxerre visited Britain to preach the accepted version of Christianity to the followers of Pelagius. (This is one of the few events for which scholars have corroborating documentary evidence from records on the continent.) His arguments were well-received, and he is even believed to have helped fend off an attack by Saxons and Picts. Life in Post-Roman Britain The official withdrawal of Roman protection did not mean that Britain immediately succumbed to invaders. Somehow, the threat in 410 was kept at bay. Whether this was because some Roman soldiers stayed behind or the Britons themselves took up arms is undetermined. Nor did the British economy collapse. Although no new coinage was issued in Britain, coins stayed in circulation for at least a century (though they were ultimately debased); at the same time, barter became more common, and a mixture of the two characterized 5th-century trade. Tin mining appears to have continued through the post-Roman era, possibly with little or no interruption. Salt production also continued for some time, as did metal-working, leather-working, weaving, and the production of jewelry. Luxury goods were even imported from the continent an activity that actually increased in the late fifth century. The hill-forts that had originated centuries before showing archaeological evidence of occupancy in the fifth and sixth centuries, suggesting they were used to evade and hold off invading tribes. Post-Roman Britons are believed to have built timber halls, which would not have withstood the centuries as well as the stone structures of the Roman period, but which would have been habitable and even comfortable when they were first constructed. Villas remained inhabited, at least for a while, and were run by wealthier or more powerful individuals and their servants, be they slave or free. Tenant farmers also worked the land to survive. Life in Post-Roman Britain couldnt have been easy and carefree, but the Romano-British way of life survived, and the Britons flourished with it. Continued on page two: British Leadership. British Leadership If there had been any remnants of centralized government in the wake of the Roman withdrawal, it rapidly dissolved into rival factions. Then, in about 425, one leader achieved enough control to declare himself High King of Britain: Vortigern. Although Vortigern did not govern the entire territory, he did defend against invasion, particularly against attacks by Scots and Picts from the north. According to the sixth-century chronicler Gildas, Vortigern invited Saxon warriors to help him fight the northern invaders, in return for which he granted them land in what is today Sussex. Later sources would identify the leaders of these warriors as the brothers Hengist and Horsa. Hiring Barbarian mercenaries was a common Roman imperial practice, as was paying them with the land; but Vortigern was remembered bitterly for making a significant Saxon presence in England possible. The Saxons rebelled in the early 440s, eventually killing Vortigerns son and exacting more land from the British leader. Instability and Conflict Archaeological evidence indicates that fairly frequent military actions occurred across England over the rest of the fifth century. Gildas, who was born at the end of this period, reports that a series of battles took place between the native Britons and the Saxons, whom he calls a race hateful both to God and men. The successes of the invaders pushed some of the Britons west to the mountains, precipices, thickly wooded forests, and to the rocks of the seas (in present-day Wales and Cornwall); others passed beyond the seas with loud lamentations (to present-day Brittany in western France). It is Gildas who named Ambrosius Aurelianus, a military commander of Roman extraction, as leading a resistance against the Germanic warriors and seeing some success. He does not provide a date, but he does give the reader some sense that at least a few years of strife against the Saxons had passed since the defeat of Vortigern before Aurelianus began his fight. Most historians place his activity from about 455 to the 480s. A Legendary Battle Both the Britons and the Saxons had their share of triumphs and tragedies until the British victory at the Battle of Mount Badon (Mons Badonicus), a.k.a. Badon Hill (sometimes translated as Bath-hill), which Gildas states took place in the year of his birth. Unfortunately, there is no record of the writers birth date, so estimates of this battle have ranged from as early as the 480s to as late as 516 (as recorded centuries later in the Annales Cambriae). Most scholars agree it occurred close to the year 500. There is also no scholarly consensus for where the battle took place since there was no Badon Hill in Britain in the following centuries. And, while many theories have been put forward as to the identity of the commanders, there is no information in contemporary or even near-contemporary sources to corroborate these theories. Some scholars have speculated that Ambrosius Aurelianus led the Britons, and this is indeed possible; but if it were true, it would require a reconfiguration of the dates of his activity, or an acceptance of an exceptionally long military career. And Gildas, whose work is the sole written source for Aurelianus as commander of the Britons, does not name him explicitly, or even refer to him vaguely, as the victor at Mount Badon. A Short Peace The Battle of Mount Badon is important because it marked the end of the conflict of the late fifth century, and ushered in an era of relative peace. It is during this time the mid-6th century that Gildas wrote the work that gives scholars most of the details they have about the late fifth century: the De Excidio Britanniae (On the Ruin of Britain). In the De Excidio Britanniae, Gildas told of the past troubles of the Britons and acknowledged the current peace they enjoyed. He also took his fellow Britons to task for cowardice, foolishness, corruption, and civil unrest. There is no hint in his writings of the fresh Saxon invasions that awaited Britain in the last half of the sixth century, other than, perhaps, a general sense of doom brought on by his bewailing of the latest generation of know-nothings and do-nothings. Continued on page three: The Age of Arthur? In response to a request for military assistance in 410, Emperor Honorius told the British people they would have to defend themselves. The occupation of Britain by Roman forces had come to an end. The next 200 years are the least well-documented in the recorded history of Britain. Historians must turn to archaeological finds to glean an understanding of life in this time period; but unfortunately, without documentary evidence to provide names, dates, and the details of political events, the discoveries can only offer a general, and theoretical, picture. Still, by piecing together archaeological evidence, documents from the continent, monument inscriptions, and the few contemporary chronicles such as the works of Saint Patrick and Gildas, scholars have gained a general understanding of the time period as set forth here. The Map of Roman Britain in 410 shown here is available in a larger version. The People of Post-Roman Britain The inhabitants of Britain were at this time somewhat Romanized, especially in urban centers; but by blood and by tradition they were primarily Celtic. Under the Romans, local chieftains had played an active role in the government of the territory, and some of these leaders took up the reigns now that the Roman officials were gone. Nevertheless, cities began to deteriorate, and the population of the entire island may have declined, in spite of the fact that immigrants from the continent were settling along the east coast. Most of these new inhabitants were from Germanic tribes; the one most often mentioned is Saxon. Religion in Post-Roman Britain The Germanic newcomers worshipped pagan gods, but because Christianity had become the favored religion in the empire in the preceding century, most Britons were Christian. However, many British Christians followed the teachings of their fellow Briton Pelagius, whose views on original sin were condemned by the Church in 416, and whose brand of Christianity was therefore considered heretical. In 429, Saint Germanus of Auxerre visited Britain to preach the accepted version of Christianity to the followers of Pelagius. (This is one of the few events for which scholars have corroborating documentary evidence from records on the continent.) His arguments were well-received, and he is even believed to have helped fend off an attack by Saxons and Picts. Life in Post-Roman Britain The official withdrawal of Roman protection did not mean that Britain immediately succumbed to invaders. Somehow, the threat in 410 was kept at bay. Whether this was because some Roman soldiers stayed behind or the Britons themselves took up arms is undetermined. Nor did the British economy collapse. Although no new coinage was issued in Britain, coins stayed in circulation for at least a century (though they were ultimately debased); at the same time, barter became more common, and a mixture of the two characterized 5th-century trade. Tin mining appears to have continued through the post-Roman era, possibly with little or no interruption. Salt production also continued for some time, as did metal-working, leather-working, weaving, and the production of jewelry. Luxury goods were even imported from the continent an activity that actually increased in the late fifth century. The hill-forts that had originated centuries before showing archaeological evidence of occupancy in the fifth and sixth centuries, suggesting they were used to evade and hold off invading tribes. Post-Roman Britons are believed to have built timber halls, which would not have withstood the centuries as well as the stone structures of the Roman period, but which would have been habitable and even comfortable when they were first constructed. Villas remained inhabited, at least for a while, and were run by wealthier or more powerful individuals and their servants, be they slave or free. Tenant farmers also worked the land to survive. Life in Post-Roman Britain couldnt have been easy and carefree, but the Romano-British way of life survived, and the Britons flourished with it. Continued on page two: British Leadership.

Refrace week2-1rem9 Essay Example | Topics and Well Written Essays - 500 words

Refrace week2-1rem9 - Essay Example The practice of ethics will also depends on which of Badaracco’s (1992) four spheres of ethics has prominence. If top management and the stakeholders/shareholders are our priority then decisions taken may be misunderstood by workers in a company, who feel that they deserve some consideration too. Mistrust and dislike creeps in. This in turn has a negative impact upon motivation and performance on the shop floor. Cunliffe (2004) states that managers need to learn how to practice ethics and morality, and when necessary make required changes in both their attitudes and practices. Corporate social responsibility (CSR) was discussed and linked with the goal of both retaining employees and increasing motivation and engagement. According to various studies (Ali and Ali, 2011; Gross and Holland, 2011; Brammer, Millington and Rayton, 2007) it seems that workers prefer to be employed by a company which is socially committed. Socially commitment is also perceived positively by the wider community (Tang, 2007; Mohr, Webb and Harris, 2001; Moir, 2001). Kenexa (2010) having studied and considered the situation in six different countries, showed strong evidence of links between corporate social responsibility and higher levels of employee engagement. At present our organization is in the early stages of CSR, which means that as yet there is only a limited level of employee participation. The process of making the employees understand the ways in which they will benefit from CSR, and how is going to benefit them their levels of motivation levels will be increased. As the level of our CSR increases so their participation levels should also increase. At the same time it is also necessary that the employees feel that the ethical decisions being made will benefit them within the organization. Ali and Ali (2011) reveal that the importance of organizations having policies of ethical activity towards their employees