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46 articles for “dependent variables”
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Research ArticleOpen accessIn the abstractEffects of Gas Velocity and Temperature on Nitric Oxide Conversion in Simulated Catalytic ConverterSathaporn ChuepengProblem statement: Gaseous emissions from gasoline engine such as carbon monoxide, unburned hydrocarbon and nitrogen oxides were usually reduced in three-way catalytic converter simultaneously around theoretical fuel and air combustion. Engine speed and load and other parameters were varied over a wide range of operating conditions, resulting in different exhaust gas composition and condition intake into catalytic converter. This work … …American Journal of Applied Sciences, Vol. 9, Issue 8 · 27 Jun 2012 · 7,304 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Measure of Monotonicity of two Random VariablesFarida Kachapova, Ilias KachapovProblem statement: When analyzing random variables it was useful to measure the degree of their monotone dependence or compare pairs of random variables with respect to their monotonicity. Existing coefficients measure general or linear dependence of random variables. Developing a measure of monotonicity was useful for practical applications as well as for general theory, since monotonicity was an important type … …Journal of Mathematics and Statistics, Vol. 8, Issue 2 · 26 May 2012 · 8,692 accessesView PDFCite
Research ArticleOpen accessIn the abstractIdentifying the Factors Affecting the Participation of Agricultural Cooperatives' MembersBagher ArayeshProblem statement: 40-year history of agricultural production cooperatives in the country shows that this type of exploitation system has faced many ups and downs during this period. First, despite the help and support by the government, the cooperative sector has not been able to play a major role in the development of the country and its share has not exceeded … …American Journal of Agricultural and Biological Sciences, Vol. 6, Issue 4 · 31 Dec 2011 · 8,934 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Comparison of Small-Side Games and Interval Training on Same Selected Physical Fitness Factors in Amateur Soccer PlayersAli Mohammad Safania, Rostam Alizadeh, Maryam NourshahiProblem statement: Soccer is a team sport with an intermittent nature in which the athletes need to improve their physical fitness and skill factors in order to engage in high intensity exercises. The aim of this study was a comparison of small-side game and interval training on some selected physical fitness in amateur soccer players. Approach: Twenty , soccer players … …Journal of Social Sciences, Vol. 7, Issue 3 · 18 Jul 2011 · 8,919 accessesView PDFCite
Research ArticleOpen accessIn the abstractElapse Time Factor on Induced Vegetative Moisture Uptake in an Unsaturated SoilMuazu Mohammed Abdullahi, Nazri Bn Ali, Kamarudin Bn Haj AhmedProblem statement: Soil consolidation is generally time dependent, therefore soil displacement as a result root water uptake is space and time dependent. The time-dependent nature of abstraction of ground water by vegetation need to be evaluated in order understand the effect of time elapse on matric suction a generation and subsequent ground displacement. Approach: The current approach used the theory … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 4 · 4 Nov 2010 · 7,710 accessesView PDFCite
Research ArticleOpen accessIn the abstractSpline Estimator in Multi-Response Nonparametric Regression Model with Unequal Correlation of ErrorsBudi Lestari, I. Nyoman Budiantara, Sony Sunaryo, Muhammad MashuriProblem statement: In many applications two or more dependent variables are observed at several values of the independent variables, such as at time points. The statistical problems are to estimate functions that model their dependences on the independent variables and to investigate relationships between these functions. Nonparametric regression model, especially smoothing splines provide powerful tools to model the functions which … …Journal of Mathematics and Statistics, Vol. 6, Issue 3 · 30 Sep 2010 · 8,168 accessesView PDFCite
Research ArticleOpen accessIn the abstractDevelopment of a Fully Coupled Approach for Evaluation of Wellbore Stability in Hydrocarbon ReservoirsVera RoccaProblem statement: When a well is drilled in a hydrocarbon reservoir, the original thermodynamic conditions are altered, the natural stresses are redistributed and a stress concentration occurs around the hole. The alteration of the original equilibrium can lead to wellbore damage, sometimes to its complete collapse. Loss of time associated with stability problems is estimated to account for 12-15% of … …American Journal of Environmental Sciences, Vol. 5, Issue 6 · 31 Dec 2009 · 7,559 accessesView PDFCite
Research ArticleOpen accessIn the abstractForecasting Gold Prices Using Multiple Linear Regression MethodZ. Ismail, A. Yahya, A. ShabriProblem statement: Forecasting is a function in management to assist decision making. It is also described as the process of estimation in unknown future situations. In a more general term it is commonly known as prediction which refers to estimation of time series or longitudinal type data. Gold is a precious yellow commodity once used as money. It was made … …American Journal of Applied Sciences, Vol. 6, Issue 8 · 31 Aug 2009 · 11,091 accessesView PDFCite
Research ArticleOpen accessIn the abstractVariables Refinery Process to Ensure Research Unbiasedness (Validity) and Invariance (Reliability) in Agricultural Extension and EducationIraj Malek MohammadiInvolving many variables, usually uncertain discrete, lowers the level of consistency and certainty in complex human studies like agricultural extension education. This research, as a part of a study entitled: Side by side situational analysis of current versus future situations of agricultural sector in manifesting the Ninth Malaysia Plan, is dealing primarily with the purpose and process of refining a … …American Journal of Agricultural and Biological Sciences, Vol. 3, Issue 1 · 31 Mar 2008 · 7,652 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Role of Environmental Non-Governmental Organizations in Natural Resources Management Extension (Case Study in Iran)Iraj M. Mohammadi, Mehrdad MirbodThis study describes the emergence, development and functions of Environmental Non-Governmental Organizations (ENGO) and addresses their role and impact in Natural Resources Management Extension (NRME) in Iran. The study also attempts to describe the collaboration and support of government organizations managing natural resources, mainly National Forest and Pasture Organization (NFPO) and Environmental Conservation Organization (ECO) and locally based ENGOs in … …American Journal of Environmental Sciences, Vol. 1, Issue 3 · 30 Sep 2005 · 6,724 accessesView PDFCite