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227 results for “engineering design”
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Research ArticleOpen accessIn the abstractA Fuzzy Logic Based Power Control for Wideband Code Division Multiple Access Wireless NetworksN. Mohan, T. RavichandranProblem statement: Resource management is one of the most important engineering issues in 3G systems where multiple traffic classes are supported each being characterized by its required Quality of Service (QoS) parameters. Call Admission Control (CAC) is one of the resource management functions, which regulates network access to ensure QoS provisioning. Efficient CAC is necessary for the QoS provisioning in … …Journal of Computer Science, Vol. 8, Issue 8 · 4 Aug 2012 · 6,760 accessesView PDFCite
Research ArticleOpen accessIn the abstractVariable Neighborhood Simplex Search Methods for Global Optimization ModelsPongchanun LuangpaiboonProblem statement: Many optimization problems of practical interest are encountered in various fields of chemical, engineering and management sciences. They are computationally intractable. Therefore, a practical algorithm for solving such problems is to employ approximation algorithms that can find nearly optimums within a reasonable amount of computational time. Approach: In this study the hybrid methods combining the Variable Neighborhood Search … …Journal of Computer Science, Vol. 8, Issue 4 · 15 Feb 2012 · 6,517 accessesView PDFCite
Research ArticleOpen accessIn the abstractTuning of a Proportional-Integral-Derivative Controller using Multi-Objective Non Dominated Sorting Particle Swarm Optimization Applied to pH Control in Continuous Stirred Tank ReactorC. Agees Kumar, N. Kesavan NairProblem statement: Most of the control engineering problems are characterized by several, contradicting, conflicting objectives, which have to be satisfied simultaneously. Two widely used methods for finding the optimal solution to such problems are aggregating to a single criterion and using Pareto-optimal solutions. Approach: Non-Dominated Sorting Particle Swarm Optimization algorithm (NSPSO) based approach is used in the design of multiobjective … …American Journal of Applied Sciences, Vol. 8, Issue 8 · 19 Jul 2011 · 6,793 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Novel Approach to Head positioning using Fixed Center Interpolation Net with Weight Elimination AlgorithmMahmoud Zaki IskandaraniA reliable algorithm for head movements inside a vehicle is designed. The proposed algorithm allowed the adjustment of basic functions such as indicators, mirrors and reverse lights based on the driver final head position. The algorithm system mapped a predefined coordinates for driver’s head that resulted in a computable geometry via a sensory system which is fed to the vehicle … …Journal of Computer Science, Vol. 7, Issue 2 · 25 Feb 2011 · 7,309 accessesView PDFCite
Research ArticleOpen accessIn the abstractEducation to Face the Wicked Challenges of SustainabilityBland TomkinsonProblem statement: The nature of sustainable development requires new paradigms for education. Issues of sustainability are ‘wicked problems’ that do not lend themselves to conventional didactic approaches. The challenge for higher education is to examine interdisciplinary approaches to global societal responsibility and, within this, issues of education for sustainable development. Approach: A project, sponsored by the Royal Academy of Engineering, … …Journal of Social Sciences, Vol. 7, Issue 1 · 18 Dec 2010 · 8,712 accessesView PDFCite
Research ArticleOpen accessIn the abstractSpiral Wound Reverse Osmosis Membranes for the Recovery of Phenol Compounds-Experimental and Parameter Estimation StudiesG. Srinivasan, S. Sundaramoorthy, D.V.R. MurthyProblem statement: Reverse osmosis is increasingly used as a separation technique in chemical and environmental engineering for the removal of organics and organic pollutants present in waste water. The removal of an organic compound, namely phenol, using a polyamide membrane was investigated in this study. Waste water containing phenol present a serious environmental problem and increasing attention is being given … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 1 · 31 Mar 2010 · 9,310 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Pattern of Local Community-Based Management for Sustainable Rural Development in West Azarbaijan ProvinceLoghman Rashidpour, Seyed Jamal Farajallah Hosseini, Mohammad Chizari, Seyed Mahdi MirdamadiProblem Statement: Community-based management as incorporates both a top-down and bottom-up approach that involvement beneficiary sections such as local community, government states and non governmental organizations. It has also been applied to designate approaches where local communities play a central but not exclusive role in rural sustainable development process management. Approach: This study was survey method and is descriptive-correlation research, … …American Journal of Agricultural and Biological Sciences, Vol. 5, Issue 1 · 31 Mar 2010 · 8,013 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffective Ventilation Parameters and Thermal Comfort Study of Air-conditioned OfficesRoonak Daghigh, Kamaruzzaman SopianThe study presents objective and subjective studies of thermal comfort levels and ventilation characteristics of two air-conditioned postgraduate study offices. The observations were performed at the offices of Department of Electrical and Electronic Engineering, in University Putra Malaysia. Thermal comfort variables were measured while the students answered a survey on their sensation of the indoor climate. Concurrently, tracer gas analysis, … …American Journal of Applied Sciences, Vol. 6, Issue 5 · 31 May 2009 · 7,590 accessesView PDFCite
Research ArticleOpen accessIn the abstractIntelligent Estimation of Compressive Strength of the Pavement Layers Stabilized by the Combination of Bitumen Emulsion and CementMehrdad Aryafar, Abdoul R. Ghotbi, Mehdi Aryafar, Amin AvaeiThe Application of the different types of additive materials such as lime, cement bitumen and the combination of them are considered as a main issue by the relating experts. In order to promote the bearing capacity of road, these materials, individually, or with the attendance of other materials add to sub base layers. During the recent years, road builders have … …American Journal of Engineering and Applied Sciences, Vol. 1, Issue 4 · 31 Dec 2008 · 7,088 accessesView PDFCite
Research ArticleOpen accessIn the abstractImplementing a Large Data Bus VLIW MicroprocessorWeng Fook Lee, Ali Yeon Md ShakaffMicroprocessors have grown tremendously in its computing and data crunching capability since the early days of the invention of a microprocessor. Today, most microprocessors in the market are at 32 bits, while the latest microprocessors from IBM, Intel and AMD are at 64 bits. To further grow the computational capability of a microprocessor, there are two possible paths. One method … …American Journal of Applied Sciences, Vol. 5, Issue 11 · 30 Nov 2008 · 6,951 accessesView PDFCite