For decades, the scope of an enterprise becomes huge day by day. In order to adapt to the rapid changing environments, it is necessary that an enterprise considers the re-engineering of organizational structures and functional processes altogether. The enterprise's administrators, while re-enginerring enterprises, need an applicable business architecture to be the Model. While setting up the business architecture, we must dialyse such factors as organizational structures, functional processes, etc. to build up the most suitable strategy. While re-enginerring enterprises, a better result comes out if organizational structures and functional processes are considered altogether. Currently, business re-engineerings adopted by an enterprise belong to process-oriented business re-engineerings. Process-oriented business re-engineerings focus mainly on an enterprise¡¦s functional processes and neglect the relationship between organizational structures and functional processes. The achievement is always not so good as expected. Embracing organizational structures and functional processes in concert and harmony, it has offered and organized advantages received after business re-engineering, the best shared practice and experience. This research probes into architecture-oriented business re-engineerings. This research leads business re-engineering and starts from the process-oriented business re-engineering that most enterprises choose now. And from ¡§organizational structures and functional processes in concert and harmony,¡§ it carries on business re-engineering necessary terms to succeed in to prove, still lies in: ¡§organizational structures and functional processes in concert and harmony,¡¨ ¡§tactics architecture of globality,¡¨ ¡§carry on the re-engineering to the cardinal or key architecture,¡¨ ¡§trans-departmental architecture re-engineering groups,¡¨ ¡§comprehensible enterprise architecture perspective,¡¨ ¡§understanding and analysing business architecture,¡¨ etc. This is exactly one of the elements that architecture-oriented business re-engineering needs too. It is expected that it can lead to an important reference that the business re-engineering requires. According to the above conclusion, we find that an enterprise can be benefited by the contribution of this research. It also provides administrators or executives many suggestions that support implementing business re-engineering of an enterprise. Key Words: Business Architecture, Architecture-Oriented Business Re-engineering, Process-Oriented Business Re-engineering, Organizational Structure, Functional Porcesss

In modern software development, the gap between software requirements and implementation is not always conciliated. Typically, for Web services-based context-aware systems, reconciling this gap is even harder. The aim of this research is to explore how software reengineering can facilitate the reconciliation between requirements and implementation for the said systems. The underlying research in this thesis comprises the following three components. Firstly, the requirements recovery framework underpins the requirements elicitation approach on the proposed reengineering framework. This approach consists of three stages: 1) Hypothesis generation, where a list of hypothesis source code information is generated; 2) Segmentation, where the hypothesis list is grouped into segments; 3) Concept binding, where the segments turn into a list of concept bindings linking regions of source code. Secondly, the derived viewpoints-based context-aware service requirements model is proposed to fully discover constraints, and the requirements evolution model is developed to maintain and specify the requirements evolution process for supporting context-aware services evolution. Finally, inspired by context-oriented programming concepts and approaches, ContXFS is implemented as a COP-inspired conceptual library in F#, which enables developers to facilitate dynamic context adaption. This library along with context-aware requirements analyses mitigate the development of the said systems to a great extent, which in turn, achieves reconciliation between requirements and implementation.

The evident progression of ubiquitous technologies has put forward the introduction of new features which software systems can sustain. Several of the ubiquitous technologies available today are regarded as fundamental elements of many software applications in various domains. The utilisation of ubiquitous technologies has an apparent impact on business processes that can grant organisations a competitive advantage and improve their productivity. The change in the business processes in such organisations typically leads to a change in the underlying software systems. In addressing the need for change in the underlying software systems, this research is focused on establishing a general framework and methodology to facilitate the reengineering of software systems in order to allow the incorporation of new features which are introduced by the employment of ubiquitous technologies. Although this thesis aims to be general and not limited to a specific programming language or software development approach, the focus is on Object-Oriented software. The reengineering framework follows a systematic step-based approach, with greater focus on the reverse engineering aspect. The four stages of the framework are: program understanding, additional-requirement engineering, integration, and finally the testing and operation stage. In its first stage, the proposed reengineering framework regards the source code as the starting point to understand the system using a static-analysis based method. The second stage is concerned with the elicitation of the user functional requirements resulting from the introduction of ubiquitous technologies. In the third stage, the goal is to integrate the system’s components and hardware handlers using a developed integration algorithm and available integration techniques. In the fourth and final stage, which is discussed in a general manner only in this thesis, the reengineered system is tested and put in the operation phase. The proposed approach is demonstrated using a case study in Java to show that the proposed approach is feasible and promising in its domain. Conclusions are drawn based on analysis and further research directions are discussed at the end of the study.

The FermaT Transformation Engine is an industrial strength toolset for the migration of Assembler and Cobol based legacy systems to C. It uses an intermediate language and several dozen mathematical proven transformations to raise the abstraction level of a source code or to restructure and simplify it as needed. The actual program transformation process with the aid of this toolset is semi-automated which means that a maintainer has not only to apply one transformation after another but also to evaluate the transformation result. This can be a very difficult task especially if the given program is very large and if a lot of transformations have to be applied. Moreover, it cannot be assured that a transformation target will be achieved because it relies on the decisions taken by the respective maintainer which in turn are based on his personal knowledge. Even a small mistake can lead to a failure of the entire program transformation process which usually causes an extensive and time consuming backtrack. Furthermore, it is difficult to compare the results of different transformation sequences applied on the same program. To put it briefly, the manual approach is inflexible and often hard to use especially for maintainers with little knowledge about transformation theory. There already exist different approaches to solve these well known problems and to simplify the accessibility of the FermaT Transformation Engine. One recently presented approach is based on a particular prediction technique whereas another is based on various search tactics. Both intend to automatise the program transformation process. However, the approaches solve some problems but not without introducing others. On the one hand, the prediction based approach is very fast but often not able to provide a transformation sequence which achieves the defined program transformation targets. The results depend a lot on the algorithms which analyse the given program and on the knowledge which is available to make the right decisions during the program transformation process. On the other hand, the search based approach usually finds suitable results in terms of the given target but only in combination with small programs and short transformation sequences. It is simply not possible to perform an extensive search on a large-scale program in reasonable time. To solve the described problems and to extend the operating range of the FermaT Transformation Engine, this thesis proposes a constraint based program transformation system. The approach is semi-automated and provides the possibility to outline an entire program transformation process on the basis of constraints and transformation schemes. In this context, a constraint is a condition which has to be satisfied at some point during the application of a transformation sequence whereas a transformation scheme defines the search space which consists of a set of transformation sequences. After the constraints and the scheme have been defined, the system uses a unique knowledge-based prediction technique followed by a particular search tactic to reduce the number of transformation sequences within the search space and to find a transformation sequence which is applicable and which satisfies the given constraints. Moreover, it is possible to describe those transformation schemes with the aid of a formal language. The presented thesis will provide a definition and a classification of constraints for program transformations. It will discuss capabilities and effects of transformations and their value to define transformation sets. The modelling of program transformation processes with the aid of transformation schemes which in turn are based on finite automata will be presented and the inclusion of constraints into these schemes will be explained. A formal language to describe transformation schemes will be introduced and the automated construction of these schemes from the language will be shown. Furthermore, the thesis will discuss a unique prediction technique which uses the capabilities of transformations, an evaluation of the transformation sequences on the basis of transformation effects and a particular search tactic which is related to linear and tree search tactics. The practical value of the presented approach will be proven with the aid of three medium-scale case studies. The first one will show how to raise the abstraction level whereas the second one will show how to decrease the complexity of a particular program. The third one will show how to increase the execution speed of a selected program. Moreover, the work will be summarised and evaluated on the basis of the research questions. Its limitations will be disclosed and some suggestion for future work will be made.

The need for construction to change its traditional working practices has been repeatedly expressed in government, industry, and academic publications. The Internet has been a major catalyst for change in most industry sectors, including the construction sector. The implementation of Internet-based technologies, such as ecommerce for achieving business targets, bring about changes in an organisation, its current practices, systems, processes and workflows. It is therefore important to evaluate the business process implications of adopting e-commerce in construction organisations. This was the focus of this study. The early stages of the research established the possible benefits, barriers, and drivers for the adoption of e-commerce technologies within construction. This was done by conducting an industry-wide survey that explored attitudes, current usage, barriers and enablers of IT and e-commerce within the UK construction sector. Survey results indicated that the exact benefits of using e-commerce within the construction industry were not known and more needed to be done to establish the effects of incorporating e-commerce applications into construction business processes and to demonstrate the opportunities of e-commerce for construction. To address this need a typical business process model that used the principles of business process re-engineering and demonstrated opportunities for e-commerce, was developed. Using this model it was possible to illustrate how, with the use of ecommerce applications, different members of the construction supply chain could derive business benefits and overcome traditional process inefficiencies. In order to effectively adopt e-commerce technologies in construction, companies may have to reengineer their current working methods, which could lead to a step change in current work practices. To facilitate such a step change it was essential to study and document the impact of specific e-commerce applications on their current end-user business processes. Case studies were conducted for this purpose. The case study findings showed that the end-user companies had accrued several business benefits from using e-commerce tools. Issues related to management buy-in and organisational culture were the main barriers to the wider use of e-commerce within the construction industry. The case studies and earlier findings indicated that e-commerce is 'here to stay' and it will not be long before it becomes an industry norm. Taking this into account, construction companies who are currently using, and those who have yet to use, e-commerce tools need to take measures to successfully adopt and benefit from these tools. It is important for companies that seek to adopt ecommerce to assess their 'e-readiness' for adopting e-commerce tools to ensure a productive and beneficial implementation of these tools. To address this need an ereadiness model for construction organisations and a prototype application, VERDICT, that assess e-readiness were developed and implemented. The model is based on the premise that for any company to be e-ready, its management, people, process and technology have to be e-ready in order to derive maximum business benefits. The research findings indicate that the use of e-commerce is still in its infancy within the construction industry. The current use of e-commerce has resulted in process automation, however, there is no evidence of process re-engineering. Such practices, although beneficial in the short-term, can have long-term implications in that the end-users are not necessarily making full use of the technology and hence not deriving full benefits from it. The model and e-readiness assessment prototype developed as part of this study will enable construction organisations to successfully adopt e-commerce and exploit its potential.

Based on permanently operation faiths of enterprise and faced to the strike against recycle of economical prosperity, variation of society and information technology, the main purpose of this case study is to discuss how enterprise will be transform and the relationship between Business Process Re-engineering (BPR) and Information Technology (IT). The object of this case study is Air Asia Company Limited (AACL) which is a 60-years enterprise and goes through verities managements by Arm Forces of USA, American operational company and Taiwanese operational company. This case study goes deep into understand industrial characteristic of AACL and influences from the trend of world economies and development polices of government in first step. Furthermore, this case study will discuss AACL¡¦s development background, company culture and problems of currently business operations and management, expecting by using BPR and IT to bring the transform opportunities for the subject enterprise. The main basement of this case study is mode of¡uThe 5 levels of Business Transformation enabled by Information Technology¡vwhich was raised by Venkatraman in 1995. Writer using the above mentioned mode to examine the Information Technology (IT) plays what kind of rules, the ranges and ways of influences during the development processes of the subject company. However, ¡§People¡¨ is main key elements to the success for leading the results of the above mentioned.

In this project we used structural equation method to analyze the data collected during the period of re-engineering in hospitals in Ontario 1995 to 1997. We want to understand how organizational change affect the well being of the staff of large teaching hospital. Two main models were considered in this project: cross-sectional models and longitudinal models for the data collected in 1995 and 1997. We tested six models for each year's data in cross-sectional model, effect-indicator, cause-indicator and mixed-indicator were used in both standard and non-standard models. We explored standard model with effect-indicators in our longitudinal case. The study was carried by SAS software program. We demonstrated an important association of job stressors with psychological outcomes of hospital staff directly and indirectly via interference. Decision-making capacity was associated with psychological outcomes in the opposite direction. Similar results were concluded from longitudinal model. The limitation was discussed. / Thesis / Master of Science (MS)

Yes / Exploring innovative cellular architectures to achieve enhanced system capacity and good coverage has become a critical issue towards realizing the next generation of wireless communications. In this context, this paper proposes a novel concept of Universal Intelligent Small Cell (UniSCell) for enabling the densification of the next generation of cellular networks. The main motivating factors behind the proposed small cell concept are the need of public infrastructure reengineering and the recent advances in several enabling technologies such as spectrum awareness, adaptive beamforming, source localization, new multiplexing schemes, etc. In this paper, first, we highlight the main concepts of the proposed small cell platform. Subsequently, we present two deployment scenarios taking into account of both technical and business aspects. Then, we describe the key future technologies for enabling the proposed UniScell Concept and present an use case example with the help of numerical results. Finally, we conclude this paper by providing some interesting future recommendations.

Thesis (M.B.A.)--North-West University, Potchefstroom Campus, 2010.

Thesis (M.B.A.)--North-West University, Potchefstroom Campus, 2010.