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852 results for “Improvement”
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Research ArticleOpen accessEvery word in the titleImprovement of Transient Stability of Power System by Thyristor Controlled Phase Shifter TransformerPrechanon KumkratugProblem statement: The improvement of transient stability of the power system was one of the most challenging research areas in power engineer. Approach: This study presents the method to improve transient stability of power system by Thyristor Controlled Phase Shifter Transformer (TCPST). The mathematical model of power system equipped with a TCPST was systematically derived. The parameters of TCPST are … …American Journal of Applied Sciences, Vol. 7, Issue 11 · 8 Nov 2010 · 7,724 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleImprovement of Nuclear Track Density Measurements Using Image Processing TechniquesA. Mostofizadeh, X. Sun, M. R. KardanThe well known edge detection methods were applied to evaluate accuracy and precision of nuclear track densitometry of polycarbonate detector. All measurements carried out in two cases of before and after improvement of track images. Considering the overlapping phenomenon -including double and triple tracks- experimental and statistical results showed that not only each particular edge detection method affects the accuracy … …American Journal of Applied Sciences, Vol. 5, Issue 2 · 28 Feb 2008 · 7,427 accessesView PDFCite
Research ArticleOpen accessEvery word in the titlePerformance Improvement and Deadlock Prevention for a Distributed Fault Diagnosis AlgorithmThabit S. MohammedThis research presents an overview to the issue of fault diagnosis in distributed systems and an evaluation study to some of the algorithms proposed in literature for performing distributed fault diagnosis. One algorithm was chosen and adopted for implementation in a simulator for investigation. A strategy for improving the performance of this algorithm and preventing deadlock was proposed in this … …Journal of Computer Science, Vol. 3, Issue 2 · 28 Feb 2007 · 6,908 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleA Total Productivity PCA Model for Assessment and Improvement of Electrical Manufacturing SystemsAli Azadeh, Farid GhaderiThis study presents a framework for assessment of electrical manufacturing systems based on a total machine productivity approach and multivariate analysis. Furthermore, the total model is developed by Principle Component Analysis (PCA) and validated and verified by Numerical Taxonomy (NT) and non-parametric correlation methods, namely, Spearman correlation experiment and Kendall Tau. To achieve the objectives of this study, a comprehensive … …Journal of Mathematics and Statistics, Vol. 1, Issue 3 · 30 Sep 2005 · 6,270 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleWillingness to Pay for Air Quality Improvements in Klang Valley MalaysiaRafia Afroz, Mohd N. Hassan, Muhamad Awang, Noor A. IbrahimThis research employed contingent valuation method (CVM) to estimate the willingness to pay (WTP) of the respondents to improve the air quality in Klang Valley. The samples were divided according to different question formats i.e. open ended(OE), dichotomous choice(DC) and payment card(PC). The objective of this study is to investigate the convergent validity of contingent valuation estimates by comparing the … …American Journal of Environmental Sciences, Vol. 1, Issue 3 · 30 Sep 2005 · 8,995 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleFurther Improvements in Temperature Calculation During Cooling of Fish PackagesF. A. Ansari, K. A. Abbas, J. Bakar et al.In an earlier study, it was demonstrated that the empirical approach used to calculate the surface film conductance resulted into a higher value compared to those obtained from the other methods available in the literature. During further investigations, surface film conductance values were found to gradually decrease with a fall in temperature. When this non-linear variation was used to develop … …American Journal of Applied Sciences, Vol. 1, Issue 2 · 30 Jun 2004 · 6,848 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleImprovements on Semi Critical Assisted-Solvent Extraction of Biocrude Oil from Spirogyra. sp Macro AlgaeTulio Chavez-Gil, Hany F. Sobhi, Alexis Pacheco-LaracuenteHere, we report on an improved chemical method to extract hydrocarbons (CH) and Fatty Acid Methyl Esters (FAME) from wild green macro algae, which is higher than that carried out with conventional Soxhlet (Sx) and similar to that of Subcritical (SbC) or supercritical fluid (SCE) extraction methods. Crude oil plus residual biomass gave combined calorific values of 49.05 MJ/kg in … …American Journal of Biochemistry and Biotechnology, Vol. 14, Issue 2 · 18 Apr 2018 · 10,083 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAre Improvements in Physical Fitness after an Exercise Program Related to the Symptomatology in Patients with FibromyalgiaBorja Sanudo, Luis Carrasco, Moisés de Hoyo, Nicolae OchianaProblem statement: Physical exercise is considered one of the main strategies in management of Fibromyalgia (FM); While many studies have shown relevant improvements in the patients’ physical condition and psychological status, the efficacy of these treatments have not yet been completely determined and whether or not these improvements are related with symptom severity is still debated. The aim of this … …Journal of Social Sciences, Vol. 7, Issue 3 · 18 Jul 2011 · 7,653 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleReclamation of Irrigated Lands and Improvement of the Groundwater Regime Under Vertical Drainage OperationBalzhan Amanbayeva, Raushan Dzhaisambekova, Alexander Basmanov et al.The aim of the study was to identify patterns of seasonal groundwater-level fluctuations and assess the effectiveness of vertical drainage in regulating the reclamation regime of saline lands in Kazakhstan. The methods included monitoring-well observations, calculation of seasonal amplitudes, Student’s t-test, the Mann-Whitney U test, and Pearson correlation analysis. Before the growing season, groundwater occurred at a depth of 1.5-1.7 … …OnLine Journal of Biological Sciences, Vol. 26, Issue 4 · 23 Sep 2026 · 608 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of Water Bath Heating on Tannin Content and Quality Improvement Potential of Gambier (Uncaria gambir Roxb.)Daimon Syukri, Bastian Nova, Rina Yenrina et al.Gambir (Uncaria gambir Roxb.) is a source of natural phenolic compounds rich in catechins and tannins and has potential as a sustainable industrial raw material. During heating, phenolic compounds may undergo structural changes, including possible oxidation and polymerization, which can affect gambier quality beyond its catechin content. This study evaluated the effect of indirect heating duration using a water bath … …OnLine Journal of Biological Sciences, Vol. 26, Issue 4 · 23 Sep 2026 · 704 accessesView PDFCite