Thesis (M. Eng.)--Carleton University, 2001. / Includes bibliographical references (p. 92-95). Also available in electronic format on the Internet.

Thesis (M.S.)--University of Wisconsin--Madison, 1983. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 344-348).

Thesis (Ph. D.)--University of Texas at Austin, 2005. / Vita. Includes bibliographical references.

Thesis (Ph.D.) - University of Queensland, 2005. / Includes bibliography.

Thesis (MTech(Information Technology)--Cape Technikon, Cape Town, 1996 / Systems Analysis and Design (also known as Systems Development) is the systematic process of problem identification, problem definition, analysis of the causes of the problem, the design of alternative solutions to the problem, and the eventual implementation of the selected solution as a computer system (if possible). During this systems development process there are a quite a large number of principles and approaches that need to be considered. It is also required from the systems analyst to have certain skills and to know how to apply a number of tools and techniques. The purpose of this research is to determine which approaches, principles, skills, tools and techniques are required by the industry for the development of commercial computer systems so that_prospective systems analysts can be properly trained in those aspects. This means that the course content of training institutions should be updated accordingly. The aspects that form part of the course offered by the training institution where the researcher works, are discussed and identified out of the literature. The course content is compared with what is required by the industry by means of an empirical research consisting of a questionnaire and frequency and regression analysis. The results from the research indicate that the following aspects of systems development must be emphasized: 1. Phases of systems development " Implementation " Analysis " Planning " Design 2. Important tools and techniques " Data modelling " Process modelling " Presentations " Input and output design " Observation (for fact-finding) " Cross Reference between the data and process model 3. Skills " Interpersonal relations " Third generation programming languages " . Basic understanding of CASE " Working knowledge of CASE

British Rail has been designing active suspensions for some 16 years, starting with tilt systems for the Advanced Passenger train. These have been designed using classical control techniques requiring a combination of experience, intuition and frequency response stability techniques, such as Nichols' plots. In order to see if a more systematic approach to control system design could produce improvements in performance and implementation the current investigation was instigated in which controllers designed using classical techniques are compared with controllers designed using linear optimal control theory. The active suspension used for the investigation was an Electro Magnetic active vertical suspension fitted to a service MkIII coach. Design of the actuators is described in the thesis along with the design of analogue and digital control systems. Two classical control systems were designed. a simple "Sky Hook" damper control system and a more sophisticated position control system developed from British Rail's experience with Maglev suspensions. A regulator designed using linear optimal control theory was found to give very good results in theory. However to implement the regulator it was necessary to design a system observer. In order to achieve a practically realisable observer considerable rationalisation of the vehicle model was required, which drew heavily on experience gained designing classical control systems. The classical control systems proved to be much easier to commission than the optimal controllers as they were designed with implementation in mind. During track testing problems of interaction between vehicles were encountered, as a result the biggest improvements in ride were obtained with the simple Sky Hook damper, as it was less specific to the vehicle than the other configurations. With further development one of the optimal control systems considered will probably turn out to be the most effective as it draws on the attributes of both classical and optimal design techniques.

No description available.

With the very rapid increase in the availability of interactive computer systems emphasis has turned from algorithm and data structure design to man-machine interface design, in an attempt to produce interactive software that is acceptable to a user population with wide experience and ability levels. Considerable research has already been undertaken to obtain guidelines for man-machine dialogue design. However little has been done to integrate dialogue design methods and techniques into the traditional life cycle and methodologies of systems development, an area in which the author carried out earlier research. This thesis describes research undertaken to develop computer aids to assist with man-machine dialogue design, thus enabling dialogue representation techniques to be thoroughly proven. These techniques have been integrated with those of structured analysis to enable early specification of the dynamic aspects of a proposed interactive system, rather than their being left to the programming stage where there may be little user involvement. Additionally of interest is the ability of users to enter and modify dialogues using one of the developed computer aids, the Dialogue Prototyper. This system exhibits a novel approach to the provision of user adaptable interfaces.

No description available.

No description available.