Computing with words (CW) provides symbolic and semantic methodology to deal with imprecise information associated with natural language. The CW paradigm rooted in fuzzy logic, when coupled with an expert system, offers a general methodology for computation with fuzzy variables …
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This thesis presents an aggregate system analysis with fuzzy methodology for interpretation, diagnosis and prediction of the behavior of the complex systems. The proposed systematic fuzzy modeling has three significant characteristics: (a) an improved fuzzy clustering approach w…
Advancement in microprocessor technology and increase in the speed of digital data manipulation have enabled us to develop applications that can improve the way we deal with every day tasks. One of these applications that need attention is image enhancement, and more importantly…
This thesis presents a systematic approach to fuzzy-logic modeling and control of complex systems. In the proposed methodology, the fuzzy model of the system and control rules are obtained from input-output data with no need of a priori information. The proposed fuzzy modeling m…
Identification and control of power systems is one of the major problems of interest in the power system area. Conventional methods of power systems identification and control are very unattractive because they are too cumbersome for on-line applications, based on linear models …
Quality defects in fresh fruits and vegetables have adverse effects on the market value of the products. Increased consumer awareness of product quality has made the marketing of fresh fruits and vegetables so competitive that maintaining high quality is essential to economic su…
The thesis examines the design and implementation of a supervisory controller for the energy management of an AC stand-alone microgrid. The microgrid under study consists of a photovoltaic (PV), battery energy storage system (BESS) and auxiliary (micro gas turbine) units connect…
Poor cost performance of construction projects has been a major concern for both contractors and clients. The effective management of risk is thus critical to the success of any construction project and the importance of risk management has grown as projects have become more com…
Due to obstruction in the national plan of urbanization in Tripoli (Libya) and population growth, serious problems have emerged in the form of random settlements, overcrowding and poor infrastructure. After more than two decades of inertia, the government has created a national …
Since Arrhenius published seminal work in 1921, research interest in the description of plant traits and grouped characteristics of plant species has grown, underpinning diversity in trophic levels. Geographic exploration and diversity studies prior to and after 1921 culminated …
The safety performance of nuclear power reactors is a very important factor in evaluating nuclear energy sustainability. Improving the safety performance of nuclear reactors can enhance nuclear energy sustainability as it will improve the environmental indicator used to evaluate…
This thesis proposes an intelligent multiple-controller framework for complex systems that incorporates a fuzzy logic based switching and tuning supervisor along with a neural network based generalized learning model (GLM). The framework is designed for adaptive control of both …
There are two main defined classes of uncertainty namely: fuzziness and ambiguity, where ambiguity is ‘one-to-many’ relationship between syntax and semantic of a proposition. This definition seems that it ignores ‘many-to-many’ relationship ambiguity type of uncertainty. In this…
Phishing techniques have not only grown in number, but also in sophistication. Phishers might have a lot of approaches and tactics to conduct a well-designed phishing attack. The targets of the phishing attacks, which are mainly on-line banking consumers and payment service prov…
This research aims at finding a foundation for assessment of capabilities and applying the concept in a human resource selection. The research identifies a common ground for assessing individuals’ applied capability in a given job based on literature review of various discipline…
This thesis presents alternative methods for designing a speed controller for a hydrostatic power transmission system. Recognising that such a system, comprising a valve controlled motor supplied by the laboratory ring main and driving a hydraulic pump as a load, contains signif…
The Bees Algorithm is a new population-based optimisation procedure which employs a combination of global exploratory and local exploitatory search. This thesis introduces an enhanced version of the Bees Algorithm which implements a fuzzy logic system for greedy selection of loc…
This work deals with modeling and maximum power tracking of a stand-alone photovoltaic (PV) power generator. In the modeling part of the research, a dynamic model of a solar cell has been developed, simulated, and validated using experimental data. Effects of parameter variation…