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225 results for “concepts”
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Research ArticleOpen accessIn the abstractMemory Storage Issues of Temporal Database Applications on Relational Database Management SystemsSami M. Halawani, Nashwan A. Al-RomemaProblem statement: Many existing database applications manage time-varying data. These database applications are referred to as temporal databases or time-oriented database applications that are considered as repositories of time-dependent data. Many proposals have been introduced for developing time-oriented database applications, some of which suggest building support for Temporal Database Management Systems (TDBMS) on top of existing non-temporal DBMSs, while others … …Journal of Computer Science, Vol. 6, Issue 3 · 31 Mar 2010 · 7,731 accessesView PDFCite
Research ArticleOpen accessIn the abstractApplying Model Reference Adaptive Controller for Lateral Motion of AircraftAbdelkader Maddi, Abderrezak Guesssoum, Daoued BerkaniProblem statement: This study developed a new application for the output model reference adaptive control of linear continuous systems based on the concepts of hyper-stability. Approach: The main idea is to design a non-linear controller which will ensure the minimal error between the reference model and the plant outputs. Results: Therefore, the synthesis of adaptive control with a model of … …American Journal of Applied Sciences, Vol. 7, Issue 2 · 28 Feb 2010 · 7,506 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Effect of Contextual Learning in Civic Education on Students' Civic CompetenceKokom KomalasariProblem statement: Globalization demands civic education to develop civic competence involving civic knowledge, civic skills and civic disposition, which are multidimensional. Civic education learning oriented to “contextualized multiple intelligences” concept opened the view of the needs to manage more creative, active participation, meaningful and pleasant learning. This research aimed to describe the effects of contextual learning on civic education of … …Journal of Social Sciences, Vol. 5, Issue 4 · 31 Dec 2009 · 8,748 accessesView PDFCite
Research ArticleOpen accessIn the abstractEvaluating Defense Architecture Frameworks for C4I System Using Analytic Hierarchy ProcessAbdullah S. AlghamdiProblem statement: The Command, Control, Communications, Computers and Intelligence (C4I) Systems provided situational awareness about operational environment and supported in decision making and directed to operative environment. These systems had been used by various agencies like defense, police, investigation, road, rail, airports, oil and gas related department. However, the increase use of C4I system had made it more important and … …Journal of Computer Science, Vol. 5, Issue 12 · 31 Dec 2009 · 7,370 accessesView PDFCite
Research ArticleOpen accessIn the abstractPrediction Studies for the Performance of a Single Cylinder High Speed Spark Ignition Linier Engine with Spring Mechanism as Return CycleA.Z.M. Fathallah, R.A. BakarProblem statement: Most concepts of linear engines were constructed as opposed pistons with complicated control devise to drive the engines. The advantage of the engines was their high overall efficiency. Approach: Although the efficiency was higher than conventional engine, however, it did not be applied yet, because the design of these engines was not only difficult to fabricate, but also … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 4 · 31 Dec 2009 · 7,302 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Review: Potentiality of Zooplankton as BioindicatorZannatul Ferdous, A. K.M MuktadirProblem statement: This review tended to summarize some recent research on zooplankton as bioindicator in India and some other countries of the world. Approach: These researches were mainly on fresh water bodies. Results: Qualitative as well as quantitative analysis were done by Shannon diversity index (H'), Evenness index (J), Species Richness index (S) and Saprobic index. In most of the … …American Journal of Applied Sciences, Vol. 6, Issue 10 · 31 Oct 2009 · 9,039 accessesView PDFCite
Research ArticleOpen accessIn the abstractNorm Divergence Opportunity Structure and Utilization of Self-Employed Immigrants' QualificationsShahamak Rezaei, Marco GoliProblem statement: Denmark experienced one of the most successful periods of its economy in 2004-2008, with a tremendous reduction of 77% in unemployment. Due to the structural challenges with regard to the labor market the utilization of immigrants’ qualifications has come up to the surface of political and societal debate in Denmark. The focus of this study was challenges to … …Journal of Social Sciences, Vol. 5, Issue 3 · 30 Sep 2009 · 7,832 accessesView PDFCite
Research ArticleOpen accessIn the abstractHypercyclic Functions for Backward and Bilateral Shift OperatorsN. Faried, Z. A. Hassanain, A. MorsyProblem statement: Giving conditions for bilateral forward and unilateral backward shift operators over the weighted space of p-summable formal series to be hypercyclic. This provides a generalization to the case of Hilbert space. Approach: We used hypercyclicity criterion and some preliminary concepts for formal Laurent series and formal power series. Moreover we got benefits of some duality properties of above … …Journal of Mathematics and Statistics, Vol. 5, Issue 3 · 30 Sep 2009 · 8,184 accessesView PDFCite
Research ArticleOpen accessIn the abstractInterface Micromotion of Cementless Hip Stems in Simulated Hip ArthroplastyMohammed Rafiq Abdul Kadir, Nazri KamsahProblem statement: The design of hip prostheses has evolved over time due to various complications found after hip replacement surgery. The currently commercially available cementless femoral stems can be categorized into one of three major types, straight cylindrical, tapered rectangular and anatomical. Each type proposes a unique concept to achieve primary stability-a major requirement for bone healing process. Virtual analyses … …American Journal of Applied Sciences, Vol. 6, Issue 9 · 30 Sep 2009 · 7,321 accessesView PDFCite
Research ArticleOpen accessIn the abstractInterpretive Perspective of Knowledge Management Stance in Agricultural Knowledge Information System to Fostering Research/Extension LinkageIraj MalekmohammadiProblem statement: Knowledge Management (KM) as a "starter" and Agricultural Knowledge Information System (AKIS) act as an "engine" to sustainable development. Approach: This article explored the role of KM as Agricultural Knowledge Initiative (AKI) to link up agricultural research and extension to foster agricultural development. A dominant-less dominant design was applied to describe the KM and AKIS integration frameworks as … …American Journal of Agricultural and Biological Sciences, Vol. 4, Issue 3 · 30 Sep 2009 · 8,127 accessesView PDFCite