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215 articles for “STEM”
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Research ArticleOpen accessIn the abstractCriteria Determining Optimal Portfolio Selection: A Case StudyDiakomihalis Mihail, Hyz Alina, Gikas GrigoriosThe paper examines the evaluation of the significance of the criteria that influence two groups of investors, who reside in different areas of Greece, in selecting their investments: (a) Investors from a metropolitan city (Athens) and (b) investors from regional Greece (Peloponnese). The study is grounded in the current and potential criteria and sub-criteria influencing investors in selecting financial investment … …American Journal of Economics and Business Administration, Vol. 5, Issue 4 · 13 Mar 2014 · 7,688 accessesView PDFCite
Research ArticleOpen accessIn the abstractCOMPARATIVE STUDY OF K-MEANS AND K-MEANS++ CLUSTERING ALGORITHMS ON CRIME DOMAINBashar Aubaidan, Masnizah Mohd, Mohammed AlbaredThis study presents the results of an experimental study of two document clustering techniques which are k-means and k-means++. In particular, we compare the two main approaches in crime document clustering. The drawback of k-means is that the user needs to define the centroid point. This becomes more critical when dealing with document clustering because each center point represented by … …Journal of Computer Science, Vol. 10, Issue 7 · 19 Feb 2014 · 7,762 accessesView PDFCite
Research ArticleOpen accessIn the abstractRETRACTED: Analysis of Interfering Substances in the Measurement of Malondialdehyde Content in Plant LeavesYunSheng Wang, MaoDi Ding, XunGang Gu et al.The Thiobarbituric Acid (TBA) reactive substances assay is an easy and quick assay for the assessment in plants of lipid peroxidation, in which Malondialdehyde (MDA) is derivatized. To analyze the applicability of this method, the MDA concentrations in the leaves of different plants were measured by the TBA method. To further separate the interfering substances, fractional extraction and Gas Chromatography-Mass … …American Journal of Biochemistry and Biotechnology, Vol. 9, Issue 3 · 21 Sep 2013 · 9,288 accessesView PDFCite
Research ArticleOpen accessIn the abstractAssessment of Melaleuca cajuputi as Heavy Metals Phytoremediator for Sewage Sludge Contaminated SoilShibli Nik Mohd, Nik Muhamad Majid, Noor Azhar Mohamed Shazili, Arifin AbduIn 2011, total marine capture landings in Peninsular Malaysia decreased by 3.9% which amounted to 1,373,105 tonnes as compared to 1,428,881 tonnes in 2010. The decline is connected to marine pollution which mainly comes from land based sources. Coastal forests play an important role affecting the marine ecosystem health and need to be conserved as a buffer to minimize pollution … …American Journal of Applied Sciences, Vol. 10, Issue 9 · 24 Aug 2013 · 7,463 accessesView PDFCite
Research ArticleOpen accessIn the abstractPossibility and Evidence-Based Reliability Analysis and Design OptimizationHong-Zhong Huang, Liping He, Yu Liu et al.Engineering design under uncertainty has gained considerable attention in recent years. A great multitude of new design optimization methodologies and reliability analysis approaches are put forth with the aim of accommodating various uncertainties. Uncertainties in practical engineering applications are commonly classified into two categories, i.e., aleatory uncertainty and epistemic uncertainty. Aleatory uncertainty arises because of unpredictable variation in the performance … …American Journal of Engineering and Applied Sciences, Vol. 6, Issue 1 · 26 Mar 2013 · 7,663 accessesView PDFCite
Research ArticleOpen accessIn the abstractPhosphorus Biogeochemical Cycling in a Sugar Cane AgroecosystemD. Sequera, D. Lopez-HernandezThe annual harvest of sugarcane plantations together with the burning of the crop before harvest, a common practice of management of sugarcane plantations in South America, leads to the loss of significant amounts of nutrients in those agroecosystems. Thus prescribed burning operations could progressively diminish the level of soil organic matter and increase nutrient deficiency in soils of sugar cane … …American Journal of Agricultural and Biological Sciences, Vol. 7, Issue 4 · 29 Jan 2013 · 7,544 accessesView PDFCite
Research ArticleOpen accessIn the abstractAssociation of Mycoplasma pneumoniae Infection With Ischemic Heart DiseasesAbdullah S. Assiri, Adil H. Alshehri, Osama M.S. Abdul-Wahab et al.Association of atherosclerosis and coronary artery disease well known main pathophysiologic basis for Ischemic Heart Diseases and Myocardial Infarction and due to major risk factors such as high plasma level of low density lipoprotein, low plasma level of high density lipoprotein, cigarette smoking, hypertension and diabetes mellitus, infection with few infectious agents such as Mycoplasma pneumoniae that might associated with … …American Journal of Immunology, Vol. 8, Issue 4 · 11 Oct 2012 · 8,092 accessesView PDFCite
Research ArticleOpen accessIn the abstractCoscinium Fenestratum Protects Against Ethanol-Induced Neurodegeneration in Adult Rat BrainWathita Phachonpai, Jintanaporn Wattanathorn, Panakaporn Wannanon et al.Alcoholism is a serious problem throughout the world. Despite intensive efforts to develop novel therapeutics for strategy efficacy against neuronal loss leading to memory impairment in alcoholism is still limited. In view of the pitfalls of psychological dependence and adverse behavioral effects of synthetic drugs, the development of low toxicity and high efficiency medicines derived from natural herbal antioxidants exhibits … …American Journal of Pharmacology and Toxicology, Vol. 7, Issue 3 · 16 Aug 2012 · 8,602 accessesView PDFCite
Research ArticleOpen accessIn the abstractDistribution, Arrangement and Interconnectedness of Cell Surface Receptor sites in the body of an OrganismUtoh-Nedosa, Uchechukwu AnastasiaCell surface receptors have been identified as the sites of disease infectivity in living organisms in a previous study. Drugs used for the treatment or cure of infections have to eliminate infections through attacking infective organisms at the cell surface receptors to which the infective organisms are attached. Problem statement: The present study examines a wide sample of living things … …OnLine Journal of Biological Sciences, Vol. 11, Issue 4 · 26 Jan 2012 · 7,355 accessesView PDFCite
Research ArticleOpen accessIn the abstractWhy the Dogs of the Dow Bark Loudly in ChinaCarol Wang, James E. Larsen, Fall M. Ainina et al.Problem statement: The Dogs of the Dow (Dow Dogs) strategy, which has gained widespread popularity in the U.S., is found to be considerably successful in China’s stock markets. This trading strategy contradicts the well-established efficient market hypothesis. Approach: This study examines the cross-sectional variations in the magnitude of the predictive power of the Dow Dogs strategy using Chinese stocks for … …American Journal of Economics and Business Administration, Vol. 3, Issue 3 · 4 Nov 2011 · 8,019 accessesView PDFCite