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229 articles for “System Modeling”
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Research ArticleOpen accessAll words, across the recordPurpose-based Versus Flow-Based Access Control for PrivacySabah Al-Fedaghi, Bashayer Al-Babtain, Maha Al-FahadProblem statement: Data protection legislation requires handling of Personal Identifiable Information (PII) in special ways to guarantee privacy. Specifically, the notion of handling purpose plays an important role in current access control mechanisms that allow only actions corresponding to intended purposes. A problem that arises in this context is how to ensure that PII is used solely for the intended … …Journal of Computer Science, Vol. 8, Issue 4 · 8 Feb 2012 · 6,819 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordWetland Ontology Modeling to Apply the Context-Aware Technology for Application Service EnvironmentJ. I. Gwi-Hwan, O. H. Ryum-DuckProblem statement: Due to recent advances in the IT industry, the importance of ontology has increased as a tool of knowledge representation at home or abroad for implementation of intelligent and personalized service system such as next generation semantic web environment and ubiquitous computing environment. But, although the importance of wetlands are being recognized, systematic management is still not enough … …Journal of Computer Science, Vol. 8, Issue 3 · 13 Jan 2012 · 6,970 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordLab-on-Chip Methodology in the Energy Industry: Wettability Patterns and Their Impact on Fluid Displacement in Oil Reservoir ModelsMarc H. Schneider, Patrick TabelingProblem statement: We present an experimental study of multiphase transport in porous media with controlled wettability patterns based on lab-on-chip methodology. Approach: Fractional, or patterned, wettability is known to have an enormous impact in the petroleum industry on oil recovery and continuous efforts are being made to assess the role of such conditions. Results: Thus far, due to the absence … …American Journal of Applied Sciences, Vol. 8, Issue 10 · 20 Aug 2011 · 7,880 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordIntegrity Classification Algorithm of Images obtained from Impact Damaged Composite StructuresMahmoud Z. IskandaraniProblem statement: Many NDT systems used for damage detection in composites are difficult to apply to complex geometric structures, also, they are time-consuming. As a solution to the problems associated with NDT applications, an intelligent analysis system that supports a portable testing environment, which allowed various types of inputs and provided sufficient data regarding level of damage in a tested … …Journal of Computer Science, Vol. 6, Issue 4 · 30 Apr 2010 · 6,970 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordDesign and Simulation of Microelectromechanical System Capacitive Shunt SwitchesHaslina Jaafar, Othman Sidek, Azman Miskam, Shukri KorakkottilProblem statement: RF MEMS switch is one of MEMS area that creates devices that have great potential to improve the performance of communication circuits and systems and enables the realization of micro size mechanical switches embedded in electronics devices. The low voltage switches are necessary due to their compatibility of standard IC technology in RF application and microelectronics systems. In … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 4 · 31 Dec 2009 · 7,710 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordThe Effect of Buoyancy Force in Computational Fluid Dynamics Simulation of a Two-Dimensional Continuous Ohmic Heating ProcessElzubier A. Salih, Thomas S.Y. Choong, S. Y. Sergie et al.Problem statement: Earlier work on ohmic heating technique focused on viscous food and foods containing solid particles. In this study, the use of ohmic heating on sterilization of guava juice is carried out. Computational fluid dynamics is used to model and simulate the system. Approach: Investigate the buoyancy effect on the CFD simulation of continuous ohmic heating systems of fluid … …American Journal of Applied Sciences, Vol. 6, Issue 11 · 30 Nov 2009 · 7,833 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordImpedance Analysis of Heat Treated Polyethylene Oxide Polymeric Material for a Neural Storage ApplicationMahmoud Z. IskandaraniProblem statement: From the early days of, researchers have developed electronic models of neurons designed to emulate neural behavior with electrical signals that mimic in some ways the measured potentials of biological neurons. Researchers interested in fabricating artificial neurons have long sought a simple and techniques to produce devices that efficiently store synaptic weights, which is behind holding a particular … …American Journal of Applied Sciences, Vol. 6, Issue 7 · 31 Jul 2009 · 7,085 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordHeterogeneous Modeling, Identification and Simulation of Activated Sludge ProcessesIbrahim H. Mustafa, G. Ibrahim, Ali Elkamel, A. H. ElahwanyProblem statement: The activated sludge system is a complex dynamic process and must account for a large number of reactions between large numbers of components. There is necessity for simulation models which describe the dynamic behavior of the activated sludge process. The application of the models in most treatment plants is limited due to lack of appropriate data acquisition and … …American Journal of Environmental Sciences, Vol. 5, Issue 3 · 30 Jun 2009 · 6,592 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordA Novel Method for Optimal Location and Expansion of Subtransmission Substations Considering Existing Medium-Voltage Distribution FeedersM. Farrokhifar, M. Bana Sharifian, R. EsmaeilzadehThis research presents an accurate comprehensive cost function for the problem of optimal location of subtransmission substations. Technical constraints and economical parameters are investigated in the modeling. Genetic algorithm is used to optimize the cost function. Coding of decision variables is done in a way that finding the correct solutions is achieved faster. For the first time in this study, … …American Journal of Applied Sciences, Vol. 6, Issue 3 · 31 Mar 2009 · 7,788 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordToward Clean Green Sustainable Development to Prevent the First Food World War, Changing Authoritative-Public Extension to Literalized-Partnership Extension SystemIraj MalakmohammadiProblem statement: The main purpose in this study is to provide a more rational platform in extension modeling to respond to the very recent world-wide warnings calling up for global revision of the present extension practices to put the appropriate science and technology to application to securing Clean-Green Sustainable Development (CGSD). Approach: To achieve this purpose, extension education was reconsidered … …American Journal of Agricultural and Biological Sciences, Vol. 4, Issue 1 · 31 Mar 2009 · 8,044 accessesView PDFCite