Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"0802 Computation Theory and Mathematics"”.
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Semantics orientated spatial temporal data mining for water resource decision support
… resource management is becoming more complex and relies heavily on computer software processing to help data queries for common and rare patterns for analyzing critical water events. For example, it is vital for decision makers to know if certain types of water quality problems are isolated …
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Content-based image indexing and retrieval for visual information systems
… life. Less than five to ten years ago, Internet and World Wide Web were not the daily vocabulary for the general public. But now, even a young child can use the Internet to search for information. This, however, does not mean that we have a mature technology to perform visual information search. …
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An enhanced progressive fuzzy clustering approach to pattern recognition
… approach, involving fuzzy clustering algorithms and fuzzy neural networks, to solve some practical problems of pattern recognition. A new fuzzy clustering framework, referred to as Cluster Prototype Centring by Membership (CPCM), has been developed. A Possibilistic Fuzzy c-Means algorithm(PFCM), …
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Signal conditioning for high efficiency : wireless transmission
… mobile communication systems will need wider band-width channels and improved spectrum efficiency to achieve the specified LTE-advanced 100Mbps (mobile) and 1Gbps (fixed) wireless transmission target rate. The next generation of wireless basestations will also need to be powered from renewable …
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An image based colorimetric technique for portable blood gas analysis
… of oxygen, partial pressure of carbon dioxide and the pH. It provides the medical practitioners with insight into the patient’s respiratory health, the metabolic activity in the body and the health of the renal system. The emphasis of the thesis is based on the development of the colorimetric …
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Aspects of parallel topologies applied to digital transforms of discrete signals
… are widely used in the fields of signal and image processing. Applications in the areas of data compression, template matching, signal filtering pattern recognition all utilise various discrete transforms. The calculation of transformations is a computationally intensive task which in …
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Cubature reduction using the theory of inequalities
… error bounds in a variety of measures of integrand derivatives. Cubature formulae involving both function evaluations and one-dimensional integration are furnished and numerical experiments to investigate the efficacy of the error formulae are performed. Product (and singular) double integration …
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Controlling processes with reference to costs, item price and process evolution
… that take into account statistical, economic and other practical issues. Special attention is paid to the problem of optimum selection the initial process mean setting, with particular reference to filling/canning processes. As there are many different situations that involve different cost …
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Query optimization for parallel object-oriented database systems
This thesis studies parallel query optimization for object-oriented queries. Its main objective is to investigate how performance improvement of object-oriented query processing can be achieved through processor parallelism.
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Reduction of the parameter estimation time for an adaptive control system
… emphasis is upon both the initial convergence and accuracy of the estimates. The investigation is therefore pertinent to both the "cold-starting" of least squares estimators, and to systems in which "jump" changes in parameters occur, requiring resetting of the estimator. The work was …
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Mean reversion in asset prices and asset allocation in investment management
… the mean reversion alternative to the random walk hypothesis is presented, with a discussion of potential models, both linear and nonlinear. The normality and homoscedasticity assumptions are investigated and their use in asset models is validated. A study of fund performance is carried …