A Stochastic Model Of Dependability OfComputer Systems In Zimbabwe
G. Kabanda · WIT transactions on information and communication technologies · 1970
A theoretical approach to evaluation leads to the hypothesis that human-computer interaction is affected by personality, influencing types of dialogue, preferred methods for providing help, etc. A practical framework suggests that evaluation is an integral part of the design and that the iterative use of the evaluation techniques throughout the conceptualisation, design, implementation, and post-implementation stages would satisfy user needs and fulfil usability goals. Evaluation is crucial to the improvement of the design and performance of a computer system, ascertaining the value of the software, legalising its use and promotion of such systems. The aim of the paper was to determine and utilize design evaluation techniques in the software development process. In this study, computer system evaluation measures used a stochastic model which represents the dynamics of the system's structure, internal states, and environment during each period of the system's operation and interruptions. The operational periods begin with validation tests. Validation of a computer system looks at the utility of the system as opposed to verification which involves semantic and structure checking. Verification during development is planned to include modelling and simulation for performance, design reviews of user specifications, design team reviews, and use of design metrics for quality. It is plausible to produce a convincingly validated testbed which is of proven effectiveness and low risk. Convincing validation is envisaged to involve measurement of software project personnel performance indicators, and software development and maintenance costs. is a concept encompassing reliability, availability, maintainability and safety of a computer system.