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441 articles for “force”
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Research ArticleOpen accessIn the abstractLightning Over-Voltages on Amman-Aqaba 400 KV LineGhassan Halasa, Ibrahim Badran, Hafez El-ZayyatAn attempt is made to evaluate the lightning over-voltage failure rate for Amman- Aqaba 400kV transmission line by studying the geographical and temporal characteristics of lightning causing the line forced outages. The line was divided into three sections based on weather and pollution conditions. It was found that the line failure rate due to lightning over-voltages is low compared to … …American Journal of Applied Sciences, Vol. 4, Issue 12 · 31 Dec 2007 · 6,632 accessesView PDFCite
Research ArticleOpen accessIn the abstractSociopolitical Instability and Economic Growth Empirical Evidence from Sri LankaChangsheng Xu, Santhirasegaram Selvarathinam, Wen Xing LiSociopolitical instability severely affects economic growth in short and long run. This study analyzes that sociopolitical instability measured by proxy measure; annual growth rate of tourist arrivals in Sri Lanka during 1960-2005 adversely affects economic growth. Our empirical findings based on ordinary lease square econometric estimation, show that sociopolitical instability negatively and significantly affect economic growth. Reduction of economic growth … …American Journal of Applied Sciences, Vol. 4, Issue 12 · 31 Dec 2007 · 6,879 accessesView PDFCite
Research ArticleOpen accessIn the abstractMathematical Modeling for Shakedown Analysis of Offshore StructuresMohammad Javad Fadaee, Hamed Saffari, Ramin TabatabaeiThe shakedown analysis process of an offshore structure having elastic-plastic material presented. The finite element model of the structure has been developed first, and then a simple method has been applied for shakedown analysis using matrix tool. Simplifying the relationships together with applying the theory concepts of shakedown analysis is one of the characteristics of the presented method for practical … …American Journal of Applied Sciences, Vol. 4, Issue 7 · 31 Jul 2007 · 7,065 accessesView PDFCite
Research ArticleOpen accessIn the abstractPerformance Evaluation of Implementing Calls Prioritization with Different Queuing Disciplines in Mobile Wireless NetworksSalman A. AlQahtani, Nasser-Eddine RikliIt is known that efficient call handling mechanisms can greatly improve cellular network performance. One way to improve system performance of cellular network is to use efficient handover schemes when users changes between cells. This paper focuses on the performance evaluation of originating and handover calls prioritization using different queue size and discipline. Both calls will be queued until they … …Journal of Computer Science, Vol. 2, Issue 5 · 31 May 2006 · 6,470 accessesView PDFCite
Research ArticleOpen accessIn the abstractCPU Cooling of Desktop PC by Closed-end Oscillating Heat-pipe (CEOHP)S. Rittidech, A. Boonyaem, P. TipnetThe CEOHP cooling module consisted of two main parts, i.e., the aluminum housing and the CEOHP. The house casing was designed to be suitable for CEOHP. The housing to drilling for insert the CEOHP. The CEOHP design employed copper tubes: Two sets of capillary tubes with an inner diameter of 0.002 m, an evaporator length of 0.05 and a condenser … …American Journal of Applied Sciences, Vol. 2, Issue 12 · 31 Dec 2005 · 8,454 accessesView PDFCite
Research ArticleOpen accessIn the abstractAn Economic Model of Insider Trading with an Informed Third PartyNasser G. ElkanjThe fact that an insider gains only at the expense of an outsider, manipulative insider trading precipitates a conflict of interests. We model this conflict in an extended principal-agent framework to demonstrate that the endogenous demand for reliable information would limit the volume and persistence of manipulative insider trading. An important dimension of such an insider trading is that an … …Journal of Social Sciences, Vol. 1, Issue 3 · 30 Sep 2005 · 6,807 accessesView PDFCite
Research ArticleOpen accessIn the abstractHigh Density Groundwater Flow, Major-ion Chemistry and Field Experiments in a Closed Basin: Fuente de Piedra Playa Lake (Spain)Rodríguez-Rodríguez Miguel, Benavente Herrera José, Moral Martos FranciscoThis study presents the results of 10 years of field investigation in Fuente de Piedra Playa Lake located in southern Spain. These field observations along the playa's shore revealed evidence of a forced convective flow and the existence of density interface below the playa basin. An upward flux of groundwater from underlying formations could be a considerable part of its … …American Journal of Environmental Sciences, Vol. 1, Issue 2 · 30 Jun 2005 · 6,305 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Investigation of the Relationship among Analyst Following, Managerial Ownership and Firm Valuation: From the Perspective of Agency TheoryI. J. ChenIn this study, the relationship among analyst following, managerial ownership and firm valuation is investigated from the perspective of agency theory by using a nonlinear simultaneous equation model. The data from the Taiwan stock market verify the proposed hypotheses with a nonlinear three-stage least-square procedure. The empirical results show that managerial ownership (serving an internal monitoring function) and number of … …Journal of Social Sciences, Vol. 1, Issue 1 · 31 Mar 2005 · 7,031 accessesView PDFCite
Research ArticleOpen accessIn the abstractNew Trajectory Control Directional MWD Accuracy Prediction and Wellbore Positioning MethodAhmed Abd Elaziz Ibrahim, Tagwa Ahmed Musa, Tang FengLin, Yao AiGouThe deviation control is to restrict the drilling direction of the bit from time to time. The drilling direction is of course depending on the direction of the resultant forces acting on the bit. What is the relationship between these directions? Are there any other influential factors? Answers to such questions, different points of view were subjected to analysis. …American Journal of Applied Sciences, Vol. 2, Issue 3 · 31 Mar 2005 · 6,905 accessesView PDFCite
Research ArticleOpen accessIn the abstractAn Investigation of the Effect of Aspect Ratio on the Airfoil PerformanceM. Kopaç, M. Yılmaz, T. GültopThe effect of aspect ratio on the airfoil performance is investigated for airflow about axially symetric wings as a function of the angle of attack. The magnitudes of aerodynamic forces and moments on airfoils resulting from the incompressible viscous flow fields are determined experimentally. The TE54 wind tunnel used for the experiments is an open conduit and has a 300x300 … …American Journal of Applied Sciences, Vol. 2, Issue 2 · 28 Feb 2005 · 7,682 accessesView PDFCite