顧孫天倫, Gu Sun, Tianlun.
published_or_final_version / Public Administration / Master / Master of Social Sciences
Copertari, Luis F.
<p>Successful project selection and management requires optimal supervision of corporate resources within specifications for time, cost, and performance. We developed a model and algorithm to support decisions on these three dimensions for project managers. It combines the advantages of the Program Evaluation and Review Technique (PERT) and the Critical Path Method (CPM). Our methodology leads to more accurate results than PERT/CPM, which typically results in optimistic planning due to less than actual completion time estimates that do not consider the possibility of more than one longest (critical) path. We also estimate performance measured by the Internal Rate of Return (IRR) of the project and the tradeoffs between time/cost and performance. We allow decision makers to calculate the probability that each activity will be critical, an indication of their relative importance for managerial purposes, in polynomial time. Furthermore, our methodology provides the means to obtain the optimal time/cost schedule of expected completion times as well as the variability in these time, cost, and performance estimates. We can apply our equations to rank the desirability of projects in a proposed portfolio, thus aiding in the portfolio selection process. A stochastic extension to the Analytic Hierarchy Process (AHP) is also used in conjunction with our methodology to demonstrate the application of uncertainty calculations in managerial group choice situations.</p> / Doctor of Philosophy (PhD)
Design and implementation of Collective Bargaining Support System (CBSS- a Web-based negotiation support systemSuarga, 07 1900 (has links)
<p>Negotiation is an important part of the life in many organizations. Many works have been undertaken to build tools for conducting negotiations, such as theoretical models and computerized support systems. Some of the existing computerized support systems provide suggestions and solution alternatives to the users. Other systems support the negotiation process, including: support for communications, structuring the process, and managing the documentation. The advent of the World Wide Web as widely available networking platform, the Client/Server as a computing architecture, and Java language as a programming language for the Web, creates new and promising ways to conduct negotiations as an alternative if face-to-face negotiations are not possible. This article describes the design, implementation, and validation of a computerized process support for negotiation, a Web-based Collective Bargaining Support System (CBSS). This system is implemented on Microsoft's Windows 95 environment, written in Java (Sun's JAVA SDK version 1.0), and accessed through the Web. Simulated union-management contract negotiations were conducted in an experiment to test the validity of CBSS as a negotiation stool, and to investigate the effectiveness and the efficiency of this negotiation support system. The data analysis (of questionnaires distributed during the experiment) shows that CBSS is a valid alternative, both when face-to-face negotiation is not possible and when it is combined with face-to-face negotiations. It is also concluded from the experiment that, although CBSS is perceived to be slower than face-to-face negotiation, it is an effective tool for negotiators, and it does not negatively affect bargaining outcomes.</p> / Doctor of Philosophy (PhD)
<p>The management area includes a large class of pattern recognition (classification) problems. Traditionally, these problems have been solved by using statistical methods or expert systems. In practice, however, statistical assumptions about the probability distributions of the pattern variables are often not verifiable, and expertise concerning the correct classification is often not explicitly available. These obstacles may make statistical methods and expert system techniques difficult to apply. Since the early 1980s neural network techniques have been widely used in pattern recognition, especially after Rumelhart's back propagation learning algorithm was adapted to the solution of these problems. The standard neural network, using the back propagation learning algorithm, requires no statistical assumptions but uses training sample data to generate classification boundaries, allowing it to perform pattern recognition.</p> <p>In this dissertation the neural network's behavior in classification boundary generation is analyzed. Based on this analysis, three models are developed. The first model improves the classification performance of neural networks in managerial pattern recognition by modifying the training algorithm through the use of monotonicity. Using simulated and real data, the developed model is tested and verified. The second model solves bias problems caused by small sample size in neural network classification results. The third model develops multi-architecture neural networks to supply decision makers with more natural pattern recognition information, based on fuzzy theory.</p> / Doctor of Philosophy (PhD)
<p>The provision of software support for conceptual model design processes has been an important issue in Model Management Systems research. This study examines the issue by empirically studying design behaviour and the techniques used during design, with a focus on the use of abstraction in the design process.</p> <p>A framework that explains the relationships between the use of abstraction and the output of the design process is proposed. We classify abstraction into vertical, horizontal and general abstraction techniques. We then propose that three dimensions of a design: the completeness of the design, higher level concepts in design, and the organization of the design, are affected by effective use of these abstractions. We also propose aids to support these three types of abstraction, and develop measures to evaluate their effectiveness.</p> <p>A software prototype was developed to illustrate the implementation of the proposed abstraction aids. A pilot study was also conducted to test the effectiveness of these aids using different versions of the prototype.</p> <p>Three hypotheses that test the effectiveness of the proposed abstraction aids were tested in an experimental study with treatments that included three design environments and two training methods. The three design environments were two which were supported by pencil and paper design, and one which was supported by a software prototype. The two training methods used were based on our proposed abstraction aids. The results of the experiment indicate some significant differences in the performance of the participants in different treatment groups.</p> / Doctor of Philosophy (PhD)
More and more organizations are starting to use workflow management systems (WfMS) to monitor, control and manage business processes. However, currently available commercial workflow systems are rather rigid and cannot meet the requirements of a dynamic and fast-changing business. Exception handling capabilities of the systems are very limited. Some research work has been done to address the issue by extending database technologies in workflow domain. In this thesis, we begin with a brief review of some main workflow concepts and do a survey of current research work on exception handling. We propose a leveled workflow model based on Micro-Organization Activity Processor (MOAP) and Object-Oriented Workflow Model (OOWM), which is an extension of Object-Oriented Enterprise Modeling (OOEM). The MOAP construct is extended with a goal concept and the OOEM service concept. We then propose a mechanism for exception handling which utilizes artificial intelligence technologies such as means-end analysis. We further demonstrate the functionalities and exception handling processes with a web-based simulator by applying some workflow exception cases.
The usage of MIS applications to raise the efficiency and performance of the telecommunications services in the Kingdom of Saudi ArabiaNasseef, Omar A. January 2002 (has links)
There are different kinds of requirements on an information system. Of particular concern to this study are non-functional requirements (NFRs). These are aspects of a system. independent of any technical capabilities that it may have, which form a series of constraints on how a system will actually perform, and of which an organisation must take account in order to achieve success. This thesis studies non-functional requirements with particular reference to those that support an organisation in the process of structural change. Particular attention is paid to those non-functional requirements that will be constraints that hinder the performance and efficiency of any organisation if they are not fully understood and incorporated into the new information system. The way in which such non-functional requirements should be handled is illustrated by an extensive case study of the main provider of telecommunications services in Saudi Arabia. The researcher first took an interest in the Saudi telecommunications industry as a result of the recent moves to transform the country's telecommunications service from the traditional structure to a new system by the introduction of privatisation. The new modified system is called the Saudi Telecom Company (STC), though it is at present still under the effective control of the Saudi Ministry of Post, Telephone and Telegraph (MoPTT), the previous telecommunications service provider. The Saudi telecommunications service has been a monopoly managed through traditional public management systems, typically influenced by a dominant bureaucracy. The researcher's concern has been to study and describe the current management, structure, and operations (in particular the information systems) of the MoPTT in order to identifY key issues and potential areas for development which will help the MoPTT, as the STC, to offer a quality telecommunications service in the new competitive market. The researcher sets the telecommunications industry in Saudi Arabia in its national context by providing the political, cultural and economic background to the Kingdom of Saudi Arabia. This is of particular importance in view of the significance discovered by his study of non-technical environmental factors in the performance of the telecommunications service in the country. Using a combination of the qualitative and quantitative research approaches, the researcher examined the literature relevant to his topic and undertook a fieldtrip to Saudi Arabia, when he conferred extensively with MoPTI management and staff, observed MoPTI structures and operations, and consulted other experts in telecommunications. Reflection on the literature along with extensive fieldtrip consultation and observation reveal that a full account of the operations and potential of the Saudi telecommunications system cannot be provided by a consideration of its technical functions and processes alone. Due recognition must be given to the peculiarly Saudi setting of the service, and in particular attention must be paid to non-functional aspects, such requirements and constraints related to the environment in which the system has to operate. Culturally related non-functional requirements are of particular interest, and the case of Internet access in Saudi Arabia is examined, since it provides an especially good example of a non-functional requirement which is undergoing change, while still acting as a constraint on telecommunications usage. The case is related to a new conception of Saudisation, whereby Saudi personnel are no longer simply taking over and imitating western skills, but where they are providing Saudi solutions to Saudi questions. Using information gathered largely during his fieldtrip, the researcher provides a comprehensive description and discussion of the current MoPTT business areas, organisational structures, and information systems. Not only the commercial and technical features of these operations are examined, but also the extent to which they succeed in fulfilling or operating within the non-functional requirements and constraints, especially those of particularly Saudi origin, imposed upon them. Where appropriate, potential new approaches and directions for the MoPTI in relation to handling issues are indicated. Employing techniques developed by Dr. Michael Porter of Harvard University, an analysis has been provided of the of the MoPTI's enterprise strategy, since it is this which ultimately drives all the operations of the MoPTI, and upon which the MoPTI's telecommunications service will depend for commercial success in the new postprivatisation market. Based upon this analysis, the researcher has put forward explicit operational, managerial, and business proposals which should allow the MoPTT to seize the opportunities offered by privatisation, and to achieve success in both the domestic and the international telecommunications market. The researcher has felt able to identifY a number of specific factors within the MoPTr which might receive particular attention for revision and improvement, as they impact on all MoPTT operations and are of critical importance for its commercial success. These areas are strategic planning, marketing, training, customer relations, an integrated information system, and workforce management. As a result of his investigation into the operations of the MoPTT the researcher has been able to identify a new approach to the future of telecommunications in Saudi Arabia. He has designed an information architecture within which the MoPTT information systems might operate, and which takes full account of the role of non-functional aspects in the degree of success of such a complex operation. He offers a comprehensive description of the basis, operational details, and advantages of the implementation of this architecture for the MoPTT's information system operations. The particular benefits of Saudisation are stressed. It became clear during the research that the concept of Saudisation simply as the taking over and imitation of tasks previously carried out by non-Saudis (because they had the training and experience) was now inadequate. Saudisation has now to be understood as a cultural as well as a technical or business transformation, a dynamic concept relating both to enduring Saudi cultural values and to changing social attitudes and practices. Indeed this concept of Saudisation would repay further investigation as a suitable topic for future academic research, and the researcher makes this recommendation. He does so principally because the traditional understanding of the concept now seems inadequate and therefore a factor likely to inlnbit the truly indigenous development industry and services within Saudi Arabia.
Information systems strategies and the management of organisational change: a study of interdependenciesBurn, Janice. January 1992 (has links)
published_or_final_version / Management Studies / Doctoral / Doctor of Philosophy
Stylianou, Agathoclis Kyprou
No description available.
Yeh, Jen Yin.
Companies began to adopt the enterprise resources planning (ERP) systems to integrate organization functions during the 1990s. ERP systems are expected to improve operational processes, reduce costs, and provide a competitive advantage. They are a strategic Information Technology (IT) investment. The evaluation of IT investment and performance is of crucial importance to companies. The purpose of this paper is to provide an overview of ERP performance and of the issue inherent ERP system evaluation. / The paper is structured around four key themes: The reasons that companies adopt ERP systems; the level of success of implemented ERP systems; approaches to the management of ERP systems; and a review of prominent approaches to the evaluation of information systems. It is concluded that the extensive array of benefits potentially available from the implementation of ERP systems are not all readily forthcoming without a high degree of sophistication in the management of the changes associated with implementation. In terms of evaluation frameworks, it is concluded that any framework should take a longitudinal perspective and consider a broad range of issues. / Thesis (DBA(DoctorateofBusinessAdministration))--University of South Australia, 2005.
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