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664 articles for “variables”
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Research ArticleOpen accessIn the abstractAn Empirical Validation of Object-Oriented Design Metrics for Fault PredictionJie Xu, Danny Ho, Luiz F. CapretzProblem Statement: Object-oriented design has become a dominant method in software industry and many design metrics of object-oriented programs have been proposed for quality prediction, but there is no well-accepted statement on how significant those metrics are. In this study, empirical analysis is carried out to validate object-oriented design metrics for defects estimation. Approach: The Chidamber and Kemerer metrics suite … …Journal of Computer Science, Vol. 4, Issue 7 · 31 Jul 2008 · 6,992 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Review on Factors Impinges Computer Usage in EducationNaresh Kumar, Raduan Che Rose, Jeffrey Lawrence D’SilvaThe growing body of literature associated with educational computer use had examined numerous variables and interrelationships in order to gain a better understanding of computer beliefs and use of computers within education. Teachers' computer acceptance is an important factor to the successful use of computers in education. Thus it is significant to draw attention to the factors affecting teachers' computer … …Journal of Social Sciences, Vol. 4, Issue 2 · 30 Jun 2008 · 8,226 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of Multicollinearity on Power Rates of the Ordinary Least Squares EstimatorsO.O. Alabi, Kayode Ayinde, T.O. OlatayoInferences on the parameter estimates of Ordinary Least Square (OLS) estimator in regression model when regressors exhibit multicollinearity is a problem in that large standard errors of the regression coefficients which cause low t-statistic value often result into the acceptance of the null hypothesis. This paper, therefore, makes efforts to investigate the effect of multicollinearity on the power rates of … …Journal of Mathematics and Statistics, Vol. 4, Issue 2 · 30 Jun 2008 · 7,884 accessesView PDFCite
Research ArticleOpen accessIn the abstractClosed Form Solution to an Optimal Control Problem by Orthogonal Polynomial ExpansionMohammad Ali Tavallaei, Behrouz TousiIn this study the use of orthogonal polynomials for obtaining a close form solution to optimal control problems with a weighed quadratic cost function, is proposed. The method consists of using the Orthogonal Polynomials for the expansion of the state variables and the control signal. This expansion results in a set of linear equations, from which the closed form solution … …American Journal of Engineering and Applied Sciences, Vol. 1, Issue 2 · 30 Jun 2008 · 7,331 accessesView PDFCite
Research ArticleOpen accessIn the abstractTime-Marching Method for Computations of High-Speed Compressible Flow on Structured and Unstructured GridK.C. Ng, M.Z. Yusoff, K. Munisamy et al.The development of Computational Fluid Dynamics (CFD) compressible codes for 2D structured quadrilateral grid and 3D unstructured hexahedral grid is described. The high-speed flow in a nozzle blade cascade is predicted numerically by solving the 2D/3D Euler Equations in a coupled manner. The new finite volume CFD solvers employ second-order accurate central differencing scheme for spatial discretization and multi-stage Runge-Kutta … …American Journal of Engineering and Applied Sciences, Vol. 1, Issue 2 · 30 Jun 2008 · 7,354 accessesView PDFCite
Research ArticleOpen accessIn the abstractImprovement Mechanisms of Management Information System (MIS) In Iran's Agricultural Extension OrganizationAli Asadi, Abdolmotalleb Rezaei, Ahmad RezvanfarThis research describes the MIS improvement mechanisms in Iran's Agricultural Extension Organization. A survey study was applied as a methodology of research work. Data were collected using a structured questionnaire that addressed to evaluating managers’ responses regarding to MIS improvement mechanisms. All mechanisms had mean score greater than 5 as perceived by managers which implied that most mechanisms are moderately … …American Journal of Agricultural and Biological Sciences, Vol. 3, Issue 2 · 30 Jun 2008 · 7,868 accessesView PDFCite
Research ArticleOpen accessIn the abstractAnalysis of Factors Influencing Rural People's Participation in National Action Plan for Sustainable Management of Land and Water Resources in Hable-Rud Basin, IranElham Faham, Seyed Mahmood Hosseini, Amir Keivan DarvishThe purpose of this study was to analyze factors influencing rural people's participation in National Action Plan for Sustainable Management of Land and Water Resources (NAP-SMLWR) in Hable-Rud Basin. This study is a case study of Arou village in northern Hable-Rud basin. The statistical population includes head of households who dwelling in Arou village and participate in this project. Available … …American Journal of Agricultural and Biological Sciences, Vol. 3, Issue 2 · 30 Jun 2008 · 8,250 accessesView PDFCite
Research ArticleOpen accessIn the abstractAnalysis of Factors Influencing Motivation of Villagers' Participation in Activities of Social Forestry (The Case Study of West Mazandaran)Elham Faham, Ahmad Rezvanfar, Taghi ShamekhiThe main purpose of this study was to analyze factors influencing motivation of villagers' participation in activities of social forestry. The statistical population includes all villagers living in villages, which locate in the west Mazandaran of Iran and had been covered by local forestry cooperative. A sample of 110 villagers were selected by the use of proportional random sampling method. … …American Journal of Agricultural and Biological Sciences, Vol. 3, Issue 2 · 30 Jun 2008 · 7,746 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Novel Reversible BCD Adder For Nanotechnology Based SystemsMajid Haghparast, Keivan NaviThis paper proposes two reversible logic gates, HNFG and HNG. The first gate HNFG can be used as two Feynman Gates. It is suitable for a single copy of two bits with no garbage outputs. It can be used as &#34Copying Circuit&#34 to increase fan-out because fan-out is not allowed in reversible circuits. The second gate HNG can implement all … …American Journal of Applied Sciences, Vol. 5, Issue 3 · 31 Mar 2008 · 10,138 accessesView PDFCite
Research ArticleOpen accessIn the abstractDynamic Modelling of an Industrial Smelter Furnace and Converter Off-gas SystemHelen Shang, Megan Dillabough, Phillip Nelson, Bryan SaltIn smelters, metal ores or concentrates are smelted to reduce a metal oxide to a metal through a series of reactions and processes. In a smelting process, a large amount of off-gas emissions are often generated, which can cause serious environmental and plant hygiene problems if not properly treated. Off-gas systems extract and treat the off-gas emissions, and ensure that … …American Journal of Environmental Sciences, Vol. 4, Issue 1 · 29 Feb 2008 · 7,158 accessesView PDFCite