Abstract   The purpose of this essay is to find difficulties and risks in the re-engineering process when restructuring to Model-View-Controller (MVC). A thoroughly theory study has been conducted to be able to understand the important steps in the re-engineering process. The methods and concepts of this essay are re-engineering, UML, system development life cycle, design patterns and MVC. The science approach used is design science where the artifact being developed are a set of models. In the analysis phase of the process the system is analyzed. The result of the analysis is notes of difficulties found and models showing the structure of the system. The results from the analysis is used to answer the questions. The steps taken in the re-engineering process are identified and described. All risks and difficulties found when following these steps are described. The guiding knowledge of this essay is to show when it's worth the effort of re-engineering the system instead of starting over from the beginning. When the problems are overwhelming and to time consuming re-engineering is not the best option.

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Computers have gone from being solely large number crunching machines to small devices capable of performing a myriad of functions in a very small space of time. Computers are now used to control just about every facet of daily life; they can now be found in automobiles, washing machines and home heating systems. This rapid diversification brings a great many problems. Traditional software engineering methodologies are failing to meet and address these new problems. The goal of this thesis is to develop a new approach to organisational requirements engineering. A new modelling approach to representing organisations will be developed which will draw upon the concepts of a systems architecture, modelling the life cycle of responsibilities and the execution of conversations. Using this architecture an organisation will be able to embed social and cultural aspects within the modelling notation. From the modelling of responsibilities a clearer picture of the organisation's aims, objectives and policies will be developed along with a definition of what objects and access rights are required in order for the organisation to function. Using speech act and Petri net based models to model conversations a clearer understanding of the dynamics and constraints governing organisational behaviour can be developed. These modelling approaches are then applied to two real life case studies in order to demonstrate and evaluate their performance and usefulness.

Since the business surroundings become fast-moving, the enterprises implement BRP to keep pace with.While some enterprises got dramatic performance improvement,still many failed ,which made BPR be doubted.In this information-era,changing happen very often ,so BPR has it ¡¦s value on business practices and applications in the future. Moreover, Information Technology make great progesses in recent years and become powerful tool for BPR. How can enterprises make IT-related decision on BPR¡HHow to choose adequate BPR strategies¡H This thesis will foucus on these topics.In the text will appear ¡uIT-involvement matrix¡v and ¡uBPR strategies sets¡v to explain what relations live between business objectives,strategies,activiries and performance valuations.

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[Abstract]: The vast majority of present legacy information systems were implemented using the traditional paradigm. The traditional paradigm consists of modeling techniques used by system analysts such as System Flow Charts and Data Flow Diagrams (DFD) to capture, during the analysis phase, the activities within a system.However, with recent developments, particularly trends towards e-Commerce applications, platform independence, reusability of pre-built components, capacity for reconfiguration and higher reliability, many organizations are realizing they will need to re-engineer their systems into new component based systems that meet thesetrends given the limitations of legacy systems to adapt to these new technical requirements.There is a high degree of interest and concern in establishing whether or not a full migration to a more portable and scalable component-based architecture will be able to represent the legacy business requirements in the underlying requirements model of the re-engineered information systems.As a result, this study poses the question: Is the resulting component-based requirements model ontological equivalent to the legacy requirements model whenshifting paradigms in the re-engineering process?After a literature review, the research study is justified given the differences in requirements modeling between component-based and traditional paradigms, whichgive an indication that the resulting component model might not represent the same business requirements represented in the legacy system requirements model.The study evaluated the requirements models generated by the component-based and traditional approaches when shifting paradigms in the re-engineering process inorder to verify that the re-engineered component-based requirements model was capable of representing the same business requirements of the legacy system. Design science and an ontological evaluation using the Bunge-Wand-Weber(BWW) model were the central research methodologies for this study.A legacy system was selected as part of the case study and re-engineered by using the component-based paradigm with the help of UML diagrams. The requirements model of the legacy system was recovered using reverse engineering and compared to the component-based requirements model using normalized reference models generated with the help of BWW transformation maps. These maps revealed that there-engineered requirements models were capable of representing the same business requirements of the legacy system. A set of rules was suggested when reengineeringlegacy into component-based information systems to ensure the same representation of legacy system’s requirements in the re-engineered requirements model.Finally, this research included directions of future research that put emphasis on the development of automated software tools for systems re-engineering that couldimplement the rules suggested in this study and the ontological methodology approach used.

The most significant challenge is ¡§ how to manage effectively organizational changes¡¨ while the organization is confronting with its strategic changes. In the course of practice, it would meet the environmental changes, effectively solidify unanimous opinions, strengthen the function of object management and the capability of managing changes, and improve the constitution of organization in order to achieve the optimal efficiency of entire operation, and estabilish the core competence of organization. Taiwan is facing to the heavy impact due to hi-tech industry move outside, especially in high-tech and high-valued semiconductor industry. And now the high-tech companies are facing to the transform of industry structure. The most important is how to enhance the competitive advantage to them. Besides operational efficiency, the speed is another critical factor to face the character of semiconductor industry either changing frequently or fast changing environment. Markets and tasks are both diversified and changeable, and the timing is also compressed quickly. Not only business operation has to accommodate with quick changes of environment, but also change ahead of marketing changes. The key point is to create or search the competitive niche for each company. Even though the strategy and organization structure will be changed for the need of the marketing environment, the factors that affect the organization structure including environment and strategies also have influence on organization operations as well as organization control and efficiency. But in the process of organization changing, not only focus on the adjustment of organization structure but further aware of the transform of corporation constitution and the development of human resource. In general company¡¦s performance of appraisal is based on the strategic plan, policy deploy and the calculation of the balance score card which are focused on the management of objective between inter-departments or stratums, but neglect the horizontal leakage among the departments or interspersions, and combine work tasks with the targets of individual development in the future. I create a ¡§combined sheet of the career plan¡¨ which improves the aforesaid defects, and make a more complete career plan sheet with illustrative case. In view of the practical experience personally, I realize that the most critical point is the personal expectation and permission in the course of organizational operating systematically. The combined sheet of the career plan also link up the targets of work tasks and individual development. In the meantime, the company fits with complete performance appraisal in order to induce and motive employees to set up some targets of individual development combined with work targets that would go deeply into the motivation and be lasting of work targets for employees. In this way, the employees will both give consideration to the performance in the personal and company. A semiconductor company, the study case of the thesis, experienced organizational regroup many times. The study focused on the different organizational types, the model of managerial operation, and the positive and negative influences on the organizational efficacy and internal control. The study in the aspect of organizational structure and changing management was involved deeply, and the environment and strategies was also described to some extent. The procedure of this study was mainly through the interview and review on the relevant reference documents related to the subject of organizational structure and changing management, meantime to have a better understanding on the development of regroup in the company for further analysis and presenting the proposal to the company, and expect to establish a valuable managerial model of organization change to improve the defects of organizational management, and to be applied in the progress of plan and management for reference.

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This dissertation is an examination of the Business Process Re-engineering (BPR) philosophy. The dissertation approach is to analyse the BPR philosophy through segmenting it into seven critical elements. These are elements that needs to be in place to ensure BPR success. Some of the critical elements are sub-components of BPR, while some others, such as the Balanced Scorecard and Project Management, are similar management philosophies that compliment the BPR approach. The seven elements examined are: 1. The identification of Economic Value Adding opportunities of Business Process Re¬engineering. 2. Aligning Business Process Re-engineering initiatives with organisational strategy by means of the Balanced Scorecard. 3. The utilisation of Best Practices and Benchmarks during the Business Process Re-engineering effort. 4. The utilization of Best Practices and Benchmarks during the Business Process Re-engineering effort. 5. Project Management techniques applicable to Business Process Re-engineering projects. 6. Implementation Drivers that helps ensure the success of Business Process Re-engineering. 7. Capturing of Business Process Re-engineering designs in Business Architectures. By no means are these the only elements involved in BPR, but it does form an essential structure for it. None of these elements are ground breaking new research subjects, although most of them are very topical in the business world at the turn of the millennium, and some are still going through growth pains in terms of practical validation. The scope of explanation for these BPR elements is kept at a practical and understandable level, with some deep drills into detail. The main objective of this dissertation is to offer a group of elements that can be used as a whole, or as selective tools during any type of Business Process Re-engineering effort. All these elements will be referenced against experiences from the industry in the form of an actual Business Process Re-engineering project that incorporated all these elements and results from their use. The dissertation deliverable is a usable composition of elements, or a BPR toolbox that can be used by Business Process Re-engineering practitioners as an aid in their efforts. / Dissertation (M Eng (Industrial Engineering))--University of Pretoria, 2007. / Industrial and Systems Engineering / unrestricted