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664 articles for “variables”
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Research ArticleOpen accessIn the abstractAn Efficient Algorithm for Capacitated Multifacility Location ProblemsChansiri Singhtaun, Peerayuth CharnsethikulIn this paper, a squared-Euclidean distance multifacility location problem with inseparable demands under balanced transportation constraints is analyzed. Using calculus to project the problem onto the space of allocation variables, the problem becomes minimizing concave quadratic integer programming problem. The algorithm based on extreme point ranking method combining with logical techniques is developed. The numerical experiments are randomly generated to … …Journal of Computer Science, Vol. 3, Issue 8 · 31 Aug 2007 · 6,443 accessesView PDFCite
Research ArticleOpen accessIn the abstractInvestigating Factors Affecting Environmental Behavior of Urban Residents: A Case Study in Tehran City- IranKhalil Kalantari, Hossein Shabanali Fami, Ali Asadi, H. Movahed MohammadiEnvironmental problems such as air and water pollution, urban garbage and climate changes in urban areas are the results of human behavior. Only change in human behavior can reduce these environmental problems. Thus studying attitude and behavior of people is a precondition to change this situation. So the main objective of this study was to find out individual and social … …American Journal of Environmental Sciences, Vol. 3, Issue 2 · 30 Jun 2007 · 7,935 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Fuzzy-GAs Model for Determining Varied Irrigation EfficiencyAnongrit Kangrang, Chavalit ChaleeraktrakoonIrrigation efficiency is necessary information in water resource management. We proposed fuzzy sets approach for estimating varied irrigation efficiency. Genetic algorithms technique was applied to calibrate membership function of fuzzy model. The fuzzy sets technique considered the uncertainty of the available water resource and required area as the input variables. The approach model was applied to determine the fluctuated irrigation … …American Journal of Applied Sciences, Vol. 4, Issue 6 · 30 Jun 2007 · 7,353 accessesView PDFCite
Research ArticleOpen accessIn the abstractIncome Distribution and Health Status: Econometric Evidence from OECD CountriesVasudeva N.R. MurthyThis research note, using a cross-sectional sample consisting of 27 Organization for Economic Co-operation and Development countries (OECD) for the reference year 2002, empirically examines the relationship between health status as measured by infant mortality and the degree of income inequality, given the effect of certain controlled variables. The empirical findings based on the estimation by robust econometric methods, show … …American Journal of Applied Sciences, Vol. 4, Issue 4 · 30 Apr 2007 · 7,254 accessesView PDFCite
Research ArticleOpen accessIn the abstractForecasting Foreign Direct Investment Inflow in Jordan: Univariate ARIMA ModelAl-Abdulrazag Bashier, Bataineh TalalThe present study is an attempt to build a Univariate time series model to forecast the FDI inflows into Jordan over the coming period 2004-2025. The study employs Box-Jenkins methodology of building ARIMA (Autoregressive Integrated Moving Average) model to achieve the goals of the study. An annual sample time series data for the FDI in Jordan was utilized over the … …Journal of Social Sciences, Vol. 3, Issue 1 · 31 Mar 2007 · 8,389 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Effect of Omega-3 Fatty Acids on Nerve Conduction Velocity (NCV) and F-wave Latency in Patients with Diabetic polyneuropathyNaser Zangiabadi, Mohamad N. Ahrari, Nouzar NakhaeeDiabetes mellitus with the prevalence rate of 8.9-12.3% in human population, ultimately leads to the peripheral nervous system involvement in many patients. It causes various types of polyneuropathies, which may manifest abnormalities such as impaired nerve conduction velocity (NCV) and prolonged F-wave latency. The aim of this study was to investigate the effect of omega-3 fatty acids on NCV and … …American Journal of Pharmacology and Toxicology, Vol. 2, Issue 1 · 31 Mar 2007 · 9,279 accessesView PDFCite
Research ArticleOpen accessIn the abstractQuality Of Work Life: Implications Of Career DimensionsRaduan C. Rose, LooSee Beh, Jegak Uli, Khairuddin IdrisLiterature on QWL is limited and several studies commonly correlates with job satisfaction but no study on QWL has associated with career related factors. This empirical study was done to predict QWL in relation to career-related dimensions. The sample consists of 475 managers from the free trade zones in Malaysia for both the multinational corporations (MNCs) and the small-medium industries … …Journal of Social Sciences, Vol. 2, Issue 2 · 30 Jun 2006 · 14,027 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Solution of Heat Conduction Equation with Mixed Boundary ConditionsNaser AbdelrazaqThe study is devoted to determine a solution for a non-stationary heat equation in axial symmetric cylindrical coordinates under mixed discontinuous boundary of the first and second kind conditions, with the aid of a Laplace transform and separation of variables method used to solve the considered problem which is the dual integral equations method. …Journal of Mathematics and Statistics, Vol. 2, Issue 1 · 31 Mar 2006 · 7,817 accessesView PDFCite
Research ArticleOpen accessIn the abstractResearch Note: Standard Scores Based on the Median and Inter-quartile RangeJames CarifioRecently when asked to help with statistical analyses of the Medicare Provider Analysis and Review (MEDPar) Data, I encountered a common statistical and analytical problem with this national database, which is also common to many national and health databases. This problem was the problem of extremely skewed distributions (g1 and/or g2 typically exceeding 20), which creates numerous difficulties in comparing … …Journal of Mathematics and Statistics, Vol. 2, Issue 1 · 31 Mar 2006 · 6,843 accessesView PDFCite
Research ArticleOpen accessIn the abstractAdults' Demand for the Internet use in the USA: An Empirical ApproachIsmail H. Genc, Hasan Sahin, Robert W. StoneAcademic literature regarding the factors influencing Internet use is presented. Based on this literature, a theoretical model of the demand for the use of the Internet is developed. The estimation of the demand for Internet use in the U.S. is performed using logit and probit. The model includes explanatory variables such as gender, race, income, age, educational level, marital status, … …Journal of Mathematics and Statistics, Vol. 2, Issue 1 · 31 Mar 2006 · 6,858 accessesView PDFCite