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77 articles for “J-shaped”
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Research ArticleOpen accessIn the abstractA Monte Carlo Study of Seven Homogeneity of Variance TestsHoward B. Lee, Gary S. Katz, Alberto F. RestoriProblem statement: The decision by SPSS (now PASW) to use the unmodified Levene test to test homogeneity of variance was questioned. It was compared to six other tests. In total, seven homogeneity of variance tests used in Analysis Of Variance (ANOVA) were compared on robustness and power using Monte Carlo studies. The homogeneity of variance tests were (1) Levene, (2) … …Journal of Mathematics and Statistics, Vol. 6, Issue 3 · 30 Sep 2010 · 8,111 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Cost-Benefit Analysis of the Legalization of an Informal Health SectorRoger Lee MendozaProblem statement: The Philippines--a developing Southeast Asian country--exemplifies the co-existence of Western-oriented, medical science and indigenous, non-allopathic practices collectively known as Complementary and Alternative Medicine (CAM). The purpose of this study is to determine why and how the economics and politics of CAM’s integration with biomedical science could impede the achievement of health care redistribution in developing countries like the … …Journal of Social Sciences, Vol. 6, Issue 1 · 31 Mar 2010 · 10,024 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Model of Pulpit Conservation and Revitalization Using Community Participation of Phu-Thai People in Northeast ThailandBunkoet Laomi, Songkoon Chantachon, Niyom WongphongkhamProblem statement: This thesis aimed to examine the following issues of the pulpits: (1) background of the model and structure, (2) current conditions and problems of pulpit construction using participation of Phu-thai people in northeast Thailand and (3) model of conservation of revitalization of pulpits by participation of Phu-thai people. Approach: Data were collected from documents and field study in … …Journal of Social Sciences, Vol. 5, Issue 4 · 31 Dec 2009 · 7,919 accessesView PDFCite
Research ArticleOpen accessIn the abstractImproving the Accuracy of Effort Estimation through Fuzzy Set Representation of SizeCh. Satyananda Reddy, KVSVN RajuProblem statement: The precision and reliability of the effort estimation is very important for the competitiveness of software companies. The uncertainty at the input level of the Constructive Cost Model (COCOMO) yields uncertainty at the output, which leads to gross estimation error in the effort estimation. Fuzzy logic-based cost estimation models are more appropriate when vague and imprecise information was … …Journal of Computer Science, Vol. 5, Issue 6 · 30 Jun 2009 · 7,092 accessesView PDFCite
Research ArticleOpen accessIn the abstractNematic and Smectic Mesophase from Calamitic Bisazobenzene Liquid Crystal: Synthesis and Characterization of 1- Methoxyhexyloxy-4'-(4-Phenylazo) Azobenzene Hybrid MoleculeSidik Silong, Abdulsalam Abubakar Salisu, Muhamad Zaki Ab Rahman et al.A new hybrid calamitic liquid crystal material with rod-shape bisazobenzene moieties as a core has been synthesized and characterized by spectroscopic methods. The mesomorphic properties were investigated by differential scanning colorimetry, polarizing optical microscopy and X-Ray diffraction. The rod-shaped molecule 1- methoxyhexyloxy-4`-(4-phenylazo)azobenzene was prepared by diazotization of 4-phenylazoaniline, coupling with phenol and subsequent etherification of 1-Bromohexyloxy-4`-(4-phenylazo)azobenzene in methanol. The presence … …American Journal of Applied Sciences, Vol. 6, Issue 4 · 30 Apr 2009 · 7,983 accessesView PDFCite
Research ArticleOpen accessIn the abstractBoundary Shear Stress around Bridge PiersMirali MohammadiThis research presents the measurement of boundary shear stress around the base of some elliptical shaped bridge piers using Preston tube technique. The uniform flow was established and a series of measurements having different discharges and channel bed slopes were undertaken. General results are established and then the effects of flow separation on the hydraulic theory are assessed. The Analysis … …American Journal of Applied Sciences, Vol. 5, Issue 11 · 30 Nov 2008 · 6,711 accessesView PDFCite
Research ArticleOpen accessIn the abstractFollowing the Heart: The History of the J-Curve in Stroke RiskShoshana Reshef, Daniel ReshefReports of a J-shaped relationship between blood pressure and ischemic stroke are rare. The purpose of this study was to trace the published history of the J-curve theory as it relates to blood pressure, ischemic heart disease and eventually ischemic stroke. The J-curve publications on the relationship between Diastolic Blood Pressure (DBP) and ischemic stroke suggest that in certain populations, … …American Journal of Pharmacology and Toxicology, Vol. 3, Issue 1 · 31 Mar 2008 · 7,359 accessesView PDFCite
Research ArticleOpen accessIn the abstractMicronutrients, Hormesis and the Aptitude for the Maturation of RegulationJaap C. HanekampThe potential of hormesis as the default model to assess and manage chemicals is considered in relation to micronutrients. It is pointed out that micronutrients, despite their well-known U-shaped dose-response curve, are assessed and managed only with excess-exposure in mind. Hereby a schism between health and safety is unjustifiably realized. This proves to be the conundrum of basically all chemicals … …American Journal of Pharmacology and Toxicology, Vol. 3, Issue 1 · 31 Mar 2008 · 7,580 accessesView PDFCite
Research ArticleOpen accessIn the abstractOn the Hormetic Behaviour of Drugs Binding to Different Redox States of Amine Oxidase EnzymesDeepak Narang, G. Reid McDonald, David J. Smith et al.Classical monoamine oxidases and copper-containing semicarbazide-sensitive amine oxidases are drug targets for a variety of established and novel pharmaceuticals used to treat conditions such as depression, Parkinsonism and inflammatory disorders. Development of enzyme inhibitors, both historically and currently, assumes an underlying adherence of these enzymes to Michaelis-Menten kinetic principles. In this mini-review, we discuss historical data from several laboratories and … …American Journal of Pharmacology and Toxicology, Vol. 3, Issue 1 · 31 Mar 2008 · 6,931 accessesView PDFCite
Research ArticleOpen accessIn the abstractHormetic and Non-Hormetic Dose-Response Functions in Stress Effects on Memory and Synaptic Plasticity: Issues and MechanismsPhillip R. Zoladz, David M. DiamondOver a century of behavioral research has shown that stress can exert both positive and negative effects on memory. We have explored the idea that the complex effects of stress on learning and memory can be characterized by hormetic- and non-hormetic dose-response functions, in which stress may either stimulate or impair brain memory mechanisms, depending, in part, on the timing … …American Journal of Pharmacology and Toxicology, Vol. 3, Issue 1 · 31 Mar 2008 · 8,188 accessesView PDFCite