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204 results for “variance analysis”
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Research ArticleOpen accessIn the abstractThe Reproductive Tract of the Males of the Zoophytophagous Predator Brontocoris tabidus (Signoret) (Heteroptera: Pentatomidae) with Different Diets and AgesWalkymario de Paulo Lemos, Rafael Coelho Ribeiro, Francisco de Sousa Ramalho et al.Abstract: Problem statement: Brontocoris tabidus (Signoret) (Heteroptera: Pentatomidae) is a common and important species for the biological control of defoliating Lepidoptera caterpillars. Although it has a predatory feeding habit, this species make use of plant resources, which are essential for the maintenance of its population in laboratory colonies as well as in the field during periods of prey shortage. Thus … …American Journal of Agricultural and Biological Sciences, Vol. 6, Issue 1 · 15 Dec 2010 · 8,421 accessesView PDFCite
Research ArticleOpen accessIn the abstractInvestigation of Socially Responsible Investment Markets (SRI) Using Dynamic Conditional Correlation (DCC) Method: Implications for DiversificationGurudeo Anand Tularam, Eduardo Roca, Victor Siew Howe WongProblem statement: Over the last ten years there has been a phenomenal growth in the amount of funds placed in SRI globally estimated to be around US$6.5 trillion while around US$55 billion in the Australian market. Accurate knowledge of correlation of the Australian SRI market with other SRI markets overseas is crucially important for Australian (SRI) investors for international portfolio … …Journal of Mathematics and Statistics, Vol. 6, Issue 4 · 4 Nov 2010 · 16,240 accessesView PDFCite
Research ArticleOpen accessIn the abstractNeural Network Change Detection Model for Satellite Images Using Textural and Spectral CharacteristicsA. K. Helmy, Gh. S. El-TaweelProblem statement: Change detection is the process of identifying difference of the state of an object or phenomena by observing it at different time. Essentially, it involves the ability to quantify temporal effects using multi-temporal data sets. Information about change is necessary for evaluating land cover and the management of natural resources. Approach: A neural network model based on both … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 4 · 4 Nov 2010 · 8,162 accessesView PDFCite
Research ArticleOpen accessIn the abstractImportance of Program Development Competencies for Agricultural Extension Agents' Performance in Process of Technology TransferNeda Tiraieyari, Khairuddin Idris, Azimi Hamzah, Jegak UliProblem statement: The movement of technology from lab to the field has been a challenge for agricultural extension agents. In this study researchers focused on program development competencies for agricultural extension agents in process of technology transfer and discuss the importance of these competencies by determining the relationship between these competencies and performance of extension agents. Approach: The study employed … …American Journal of Agricultural and Biological Sciences, Vol. 5, Issue 3 · 30 Sep 2010 · 10,144 accessesView PDFCite
Research ArticleOpen accessIn the abstractChemical Profile of Sotol Analyzed by Solid Phase Microextraction-Gas ChromatographyHeliodoro de la Garza, Juan Buenrostro, María Reyes-Vega et al.Problem statement: Sotol is a distilled spirit made from Dasylirion spp., a plant (called sotol) that grows in the wilds of Northern Mexico and west Texas and New Mexico. This alcoholic beverage is produced in a similar process to the more common artisanal tequila and mescal. Sotol is also now beginning to achieve international recognition; however there are few commercial … …American Journal of Agricultural and Biological Sciences, Vol. 5, Issue 3 · 30 Sep 2010 · 8,340 accessesView PDFCite
Research ArticleOpen accessIn the abstractEvaluation of Hairy Vetch (Vicia villosa Roth) in Pure and Mixed Cropping with Barley (Hordeum vulgare L.) to Determine the Best Combination of Legume and Cereal for Forage ProductionSeyedeh, Davood Habibi, Ali Kashani et al.Problem statement: Mixed cereal-legume cropping can supply valuable forage in dry areas, as well as improving soil characteristics to approach sustainable farming systems in these regions. Approach: In order to comprise quality and quantity of produced forage and to determine the best planting ratio in a hairy vetch and barley mix cropping, a two year study was conducted during 2008 … …American Journal of Agricultural and Biological Sciences, Vol. 5, Issue 2 · 30 Jun 2010 · 9,108 accessesView PDFCite
Research ArticleOpen accessIn the abstractAspirin in Cardiovascular and Cerebrovascular Events: Does Market Failure Matter?Roger Lee MendozaProblem statement: Against the backdrop of the 2009 scientific studies qualifying the cardiovascular and cerebrovascular benefits of aspirin, two interrelated questions are raised for investigation in this study. First, why may the government intervene in an otherwise private transaction between physician and patient and between drug manufacturer and buyer, when it involves contentious pharmacological information? Second, does government intervention make … …American Journal of Economics and Business Administration, Vol. 2, Issue 1 · 31 Mar 2010 · 8,438 accessesView PDFCite
Research ArticleOpen accessIn the abstractStudy of Relation of Psychological Factors of Empowerment and EntrepreneurshipMehrdad Goudarzvand CheginiProblem statement: Today, organizations are able to survive that have dynamic requirements and potentials and can make a proper response to changes and equip their human sources to the knowledge and skill of generative entrepreneurship through establishing necessary aspects. The increasing rate of changes in scientific, economic and social areas is one of the most common features of the century. … …American Journal of Economics and Business Administration, Vol. 2, Issue 1 · 31 Mar 2010 · 7,784 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Novel Transporting System Model for Oil RefineryRazman Mat Tahar, Waleed K. AbduljabbarProblem statement: Oil refineries are widely used to store various liquids and gases. Petroleum products are in high demand. Oil companies have abundant resources of petroleum products in pipelines and storage tanks. Approach: Included are storage tanks at retail gasoline station, home heating oil tanks, lubricant storage at automotive service facilities, propane tanks in all sorts of application, and oil … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 1 · 31 Mar 2010 · 7,874 accessesView PDFCite
Research ArticleOpen accessIn the abstractOptimization of Cutting Parameters Based on Surface Roughness and Assistance of Workpiece Surface Temperature in Turning ProcessAdeel H. Suhail, N. Ismail, S. V. Wong, N. A. Abdul JalilProblem statement: In machining operation, the quality of surface finish is an important requirement for many turned workpieces. Thus, the choice of optimized cutting parameters is very important for controlling the required surface quality. Approach: The focus of present experimental study is to optimize the cutting parameters using two performance measures, workpiece surface temperature and surface roughness. Optimal cutting parameters … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 1 · 31 Mar 2010 · 12,949 accessesView PDFCite