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2,322 results for “QA systems”
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Research ArticleOpen accessEvery word in the titleOperational Fault Diagnosis in Industrial Hydraulic Systems Through Modeling The Internal Leakage of its ComponentsP. Athanasatos, D. Koulocheris, T. Costopoulos, K. RaptisIn this study, a model of a high pressure hydraulic system was developed using the bond graph method to investigate the effect of the internal leakage of its main components (pump, cylinder and 4/2 way valve) on the operational characteristics of the system under various loads. All the main aspects of the hydraulic circuit (like the internal leakages, the compressibility … …American Journal of Applied Sciences, Vol. 10, Issue 12 · 7 Nov 2013 · 7,253 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleA Method for Human Resource Risk Management in Mobile Workforce Brokering SystemsArash Mousavi, Md. Jan Nordin, Zulaiha Ali Othman, Riza SulaimanProblem statement: Human Resource Risk Management is one of the crucial issues in Mobile Workforce Management Systems (MWM) in general, and in Mobile Workforce Brokering Systems (MWBS) in Particular. It is important because, if not properly managed, it will cause reduction in accuracy of the automated MWBS, which in turn necessitates more human involvement in the task allocation process. Thus, … …American Journal of Applied Sciences, Vol. 8, Issue 12 · 11 Oct 2011 · 7,368 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleA New Newton's Method with Diagonal Jacobian Approximation for Systems of Nonlinear EquationsM. Y. Waziri, W. J. Leong, M. A. Hassan, M. MonsiProblem statement: The major weaknesses of Newton method for nonlinear equations entail computation of Jacobian matrix and solving systems of n linear equations in each of the iterations. Approach: In some extent function derivatives are quit costly and Jacobian is computationally expensive which requires evaluation (storage) of n×n matrix in every iteration. Results: This storage requirement became unrealistic when n … …Journal of Mathematics and Statistics, Vol. 6, Issue 3 · 30 Sep 2010 · 8,541 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleFungal Culture Systems for Production of Antioxidant Phenolics Using Pecan Nut Shells as Sole Carbon SourceMiguel A. Medina, Ruth E. Belmares, Antonio Aguilera-Carbo et al.Problem statement: Many agro-industrial wastes have little or none utilization, when these materials could be a very rich source of several value-added compounds, such as: the pecan nut shells, which contain Antioxidant Phenolic (AP) molecules like tannins. Approach: In this study, a bioprocess for the liberation of AP from Pecan Nut Shells (PNS) was described. A chemical characterization of raw … …American Journal of Agricultural and Biological Sciences, Vol. 5, Issue 3 · 30 Sep 2010 · 8,045 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleWaste Generation and Recycling: Comparison of Conventional and Industrialized Building SystemsRawshan Ara Begum, Siti Khadijah Satari, Joy Jacqueline PereiraProblem statement: In the Malaysian construction industry, there is a pressing issue of minimizing construction waste, which cause significant impacts on the environment. With the increasing demand for major infrastructure projects, commercial buildings and housing development programmers, a large amount of construction waste is being produced. Adoption of prefabrication and industrialized building systems is now a priority in the industry … …American Journal of Environmental Sciences, Vol. 6, Issue 4 · 31 Aug 2010 · 9,939 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleProposed Movement Tracking E-Systems of Payment in the MunicipalitiesHassan Mohammed M. ElmetwalyProblem statement: There is no doubt that the problem of multiple entry forms data collection in information systems of the biggest problems faced by the relevant authorities. Approach: The electronic collection system proposed a final solution to the problems of collection in all municipalities. Results: Where this system was characterized by the presence of one form was linked to all … …Journal of Computer Science, Vol. 6, Issue 5 · 31 May 2010 · 6,763 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAn Ontology Driven, Procedural Reasoning System-Like Agent Model, For Multi-Agent Based Mobile Workforce Brokering SystemsArash Mousavi, Md. Jan Nordin, Zulaiha Ali OthmanProblem statement: It has been proven that Believe, Desire, Intention (BDI) agent architecture, performs suitably in dynamic and unpredictable environments. Although BDI architecture has been formulated rigorously, implementing BDI architecture is not as straightforward as it has been promised. Nevertheless, the preeminent implementation of BDI architecture is Procedural Reasoning System (PRS) and Jadex is a Java-based platform that successfully applies … …Journal of Computer Science, Vol. 6, Issue 5 · 31 May 2010 · 7,667 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleImplementation of Environmental Management Systems in the Extraction of Construction Aggregates from Gravel Pit LakesSerena Botta, Claudio Comoglio, Alberto Quaglino, Andrea TorchiaProblem statement: Mining operations are strategic and essential industrial activities which rely on the use of non renewable natural resources, causing several relevant interactions with the environment. Approach: The need to perform in compliance with even more stringent environmental legislation and to satisfy different stakeholders demands and pressures, is progressively leading the mining sector towards the implementation of Environmental Management … …American Journal of Environmental Sciences, Vol. 5, Issue 4 · 31 Aug 2009 · 7,328 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleOptimal Decentralized Load Frequency Control Using HPSO Algorithms in Deregulated Power SystemsSeyed Abbas Taher, Reza Hematti, Ali Abdolalipour, Seyed Hadi TabeiLoad Frequency Control (LFC) is one the most important issues in electrical power system design/operation and is becoming much more significant recently with increasing size, changing structure and complexity in interconnected power systems. In practice LFC systems use simple Proportional-Integral (PI) or Integral (I) controllers. However, since the PI or I control parameters are usually tuned based on classical or … …American Journal of Applied Sciences, Vol. 5, Issue 9 · 30 Sep 2008 · 7,393 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleControl of Hybrid Systems With Independent Continuous and Discrete GoalsM. De la Sen, J.C. Soto, A. Gallego, J.L. MalainaThis paper deals with the control of a class of perfectly modelled linear hybrid systems which consist of two, in general coupled, subsystems one being continuous -time while the second one is digital. Both subsystems are driven by continuous time and sampled values of a control input. The description of the overall system is given through an extended hybrid system … …American Journal of Applied Sciences, Vol. 5, Issue 2 · 28 Feb 2008 · 7,138 accessesView PDFCite