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462 articles for “Theoretical”
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Research ArticleOpen accessIn the abstractCLUSTER BASED ARCHITECTURE FOR LOCALIZATION AND TRACKING IN WIRELESS SENSOR NETWORKP. Prabhakaran, Nelson Kennedy BabuWireless sensor networks are an efficient way of reading and transmitting information through a system of controls. They are used for a variety of purposes. The signals passed between each sensing unit and the central control unit needs to be theoretically nonexistent for perfect transmission but there are many hindrances like transmission techniques and physical disturbances which cause delay. Here … …Journal of Computer Science, Vol. 10, Issue 5 · 17 Jan 2014 · 6,800 accessesView PDFCite
Research ArticleOpen accessIn the abstractStability Analysis of Solar Cell Characteristics Above Room Temperature Using Indium Nitride Based Quantum DotMohd Abdur Rashid, Adawati Yusuf, Md. Abdullah Al Humayun et al.This study represents the improvement of stability of solar cell characteristics above room temperature. We have analyzed theoretically the temperature dependence of three major characteristics of solar cell using Ge and InN based quantum dot in the active layer of the device structure. Among the major characteristics of solar cell we have investigated the rate of change of open circuit … …American Journal of Applied Sciences, Vol. 10, Issue 11 · 9 Sep 2013 · 7,131 accessesView PDFCite
Research ArticleOpen accessIn the abstractChronic Kidney Disease-Mineral Bone Disoder: Fibroblast Growth Factor-23 and Phosphate MetabolismWisit Cheungpasitporn, Pongsathorn Kue-A-Pai, Patompong Ungprasert et al.Chronic Kidney Disease (CKD) is a growing epidemic in the United States. There are hormonal changes that develop long before the mineral changes in patients with CKD occur. Increased Parathyroid Hormone (PTH) levels first become evident when the estimated Glomerular Filtration Rate (eGFR) is below 60 mL/min/1.73m2. High serum phosphate stimulates the secretion of the Fibroblast Growth Factor 23 (FGF-23) … …Current Research in Medicine, Vol. 4, Issue 1 · 4 May 2013 · 6,882 accessesView PDFCite
Research ArticleOpen accessIn the abstractUncertainty and its Impact on the Quality of MeasurementMartin Halaj, Adel Elahdi M. YahyaThe imposition of practice, the current world, the laboratory measurement, calibration should be approved by points of credit to national or international and should be compatible with the requirements specification (ISO 17025) for the adoption of efficient laboratories. Those requirements were included the testing process or scale limits to doubt that mentioned in the measurement certificate, which recognizes the customer … …American Journal of Engineering and Applied Sciences, Vol. 5, Issue 2 · 4 Jul 2012 · 8,279 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Use of E100 to Fuel a Used 4-Stroke MotorcycleT. SuthisripokProblem statement: Though ethanol and gasohol are proved to be used as alternative fuels in vehicles, 4-stoke motorcycles used nationwide mainly consumed gasoline 91/95. Approach: The motorcycle tested, the used Honda Wave125 model, was properly tuned at the rich relative air-fuel ratio (λ) 0.85, which theoretically gave the maximum power output. For the use of E100, the engine required richer … …American Journal of Applied Sciences, Vol. 9, Issue 5 · 23 Feb 2012 · 9,480 accessesView PDFCite
Research ArticleOpen accessIn the abstractInteraction of Aqueous Extract of Trigonella Foenum-Graecum Seeds with Glibenclamide in Streptozotocin Induced Diabetic RatsV. K. Lal, P. P. Gupta, P. Tripathi, A. PandeyProblem statement: Interaction between herbs and drugs may increase or decrease the pharmacological or toxicological effects of either component. Herb traditionally used to decrease glucose concentrations in diabetes could theoretically precipitate hypoglycaemia if taken in combination with conventional drugs. Approach: The present study was undertaken to determine the interaction of Glibenclamide, a Sulphonylurea with Trigonella foenum-graecum seed extract, an herbal … …American Journal of Pharmacology and Toxicology, Vol. 6, Issue 4 · 31 Dec 2011 · 8,017 accessesView PDFCite
Research ArticleOpen accessIn the abstractViscous Dissipation Effect on Steady free Convection and Mass Transfer Flow past a Semi-Infinite Flat PlatePalanisamy Geetha, Muthamperumal Bhavathikannu Krishna MoorthyProblem statement: A steady two-dimensional free convection and mass transfer flow past a continuously moving semi-infinite flat plate is studied theoretically, by taking into account the viscous dissipation effect. Approach: The governing equations are transformed into a set of simultaneous ordinary differential equation by using suitable similarity transformations. The coupled differential equations are integrated using the Runge-Kutta Gill method together … …Journal of Computer Science, Vol. 7, Issue 7 · 30 Jun 2011 · 6,509 accessesView PDFCite
Research ArticleOpen accessIn the abstractOptical and Physical Properties of Bismuth Borate Glasses Doped With Dy3+Pichet Limsuwan, Jakrapong Kaewkhao, Parnuwat Chimalawong, Smit InsiripongThis study reports on physical and optical properties of Dy3+ doped bismuth borate glass. The glasses containing Dy3+ in (70-x)B2O3:30Bi2O3:xDy2O3 (where x = 0.0-2.5 mol%) have been prepared by melt-quenching method. In order to understand the role of Dy2O3 in these glasses, the density, molar volume and optical spectra were investigated. The results show that molar volume of the glasses … …American Journal of Applied Sciences, Vol. 8, Issue 6 · 13 Jun 2011 · 7,361 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Novel Performance Metric for Building an Optimized ClassifierMohammad Hossin, Md Nasir Sulaiman, Aida Mustapha, Norwati MustaphaProblem statement: Typically, the accuracy metric is often applied for optimizing the heuristic or stochastic classification models. However, the use of accuracy metric might lead the searching process to the sub-optimal solutions due to its less discriminating values and it is also not robust to the changes of class distribution. Approach: To solve these detrimental effects, we propose a novel … …Journal of Computer Science, Vol. 7, Issue 4 · 4 Apr 2011 · 8,480 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Novel Ensemble Method for Regression via Classification ProblemsSami M. Halawani, Ibrahim A. Albidewi, Amir AhmadProblem statement: Regression via Classification (RvC) is a method in which a regression problem is converted into a classification problem. A discretization process is used to covert continuous target value to classes. The discretized data can be used with classifiers as a classification problem. Approach: In this study, we use a discretization method, Extreme Randomized Discretization (ERD), in which bin … …Journal of Computer Science, Vol. 7, Issue 3 · 7 Mar 2011 · 7,387 accessesView PDFCite