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Research ArticleOpen accessIn the abstractPower Quality Improvement Using a Sliding Mode Control of a Series Active FilterTheerayuth ChatchanayuenyongA sliding mode controller (SMC) for a three-phase series active filter was proposed to compensate voltage unbalances, suppress voltage sags and swells and hence improve the power quality of a three-phase ac system. The voltage unbalance compensation and regulation is only based on the positive sequence component decomposition of the supply voltage that is then adjusted to a rated value … …American Journal of Applied Sciences, Vol. 5, Issue 8 · 31 Aug 2008 · 6,587 accessesView PDFCite
Research ArticleOpen accessIn the abstractThree-Phase Shunt Active Power FilterMoleykutty George, Kartik Prasad BasuActive power filters have been widely used for harmonic elimination. The performance of a conventional three-phase shunt Active Power Filter (APF) using Synchronous Detection Method (SDM) has been compared with Nonlinear Autoregressive-Moving Average (NARMA)-L2 based APF. The novelty of this study lies in the application of NARMA-L2 control to generate the amplitude of the reference supply current required by the … …American Journal of Applied Sciences, Vol. 5, Issue 8 · 31 Aug 2008 · 7,306 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Private Sector's Role in limiting unemployment in JordanKhaled M.M.Abu AliqahThis study is aimed to define unemployment, and private sector, to know more about both, and to study the role of the private sector in limiting unemployment in Jordan in special. In a particular year the level of unemployment is determined by the level of aggregate demand for the goods and services which a country produces .if demand higher this … …Journal of Social Sciences, Vol. 4, Issue 1 · 31 Mar 2008 · 7,208 accessesView PDFCite
Research ArticleOpen accessIn the abstractUsing GIS for Retail Planning in Jeddah CityAbdulkader A MuradThe aim of this paper was to identify the possibilities of using Geographical Information Systems (GIS) in retail planning field. A spatial database was created for one major retail center called Cornaish center in Jeddah city, Saudi Arabia. The results of the GIS analysis covers three retail planning issues called Proximity to retail center, retail demand characteristics and spatial interaction … …American Journal of Applied Sciences, Vol. 4, Issue 10 · 31 Oct 2007 · 6,860 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Novel High-Speed 54⨯54 bit MultiplierPouya Asadi, Keivan NaviA new 54⨯54-bit multiplier using high-speed carry-lookahead adder has been fabricated by CMOS technology. This paper presents a self-timed carry-lookahead adder in which the logic complexity was a linear function of n, the number of inputs, and the average computation time was proportional to the logarithm of the logarithm of n. To the best of our knowledge, our adder has … …American Journal of Applied Sciences, Vol. 4, Issue 9 · 30 Sep 2007 · 7,084 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Provenance of the Varzaneh Aeolian Sand Field Regarding to Lithology and Texture, SW Esfahan, IranH. Pakzad, R. AjalloeianThe main mineralogical/lithological composition of the Varzaneh aeolian sands is sedimentary and igneous lithics. The minor one is metamorphic lithics and mineral grains (such as quartz, feldspar and heavy mineral grains) respectively. The origin of the sedimentary lithics (mainly carbonates) mostly is from sedimentary rocks exposed in the west and the southwest of the study area. These rocks belong to … …American Journal of Applied Sciences, Vol. 4, Issue 8 · 31 Aug 2007 · 7,204 accessesView PDFCite
Research ArticleOpen accessIn the abstractDesign and Development of a Photovoltaic Power System for Tropical Greenhouse CoolingFaisal Mohammed Seif Al-Shamiry, Desa Ahmad, Abdul Rashid Mohamed Sharif et al.Renewable energy sources like photovoltaic (PV) panels are used today in many applications. Natural ventilation in tropical greenhouse is common method for ventilation, which gives higher inside temperatures compared to the outside temperatures. In addition, this type of ventilation is not enough to reduce high temperature inside the structure in low land areas. Thus the requirement of cooling is increased. … …American Journal of Applied Sciences, Vol. 4, Issue 6 · 30 Jun 2007 · 8,216 accessesView PDFCite
Research ArticleOpen accessIn the abstractSecure Mobile Trade AgentMusbah M. Aqel, Sattar J. Aboud, Mohammed A. AL-FayoumiE-commerce on the internet has the ability to produce millions of transactions and a great number of merchants whose supply merchandise over the internet. As a result, it is difficult for entities to roam over every site on the internet and choose the best merchandise to trade. So, in this paper we introduced a mobile trade agent that visit the … …Journal of Computer Science, Vol. 3, Issue 5 · 31 May 2007 · 6,770 accessesView PDFCite
Research ArticleOpen accessIn the abstractBiochemical Effects of Recombinant Porcine Somatotropin on Pig Fetal Growth and Metabolism: A ReviewD. Villanueva-García, S. A. Olmos-Hernández, D. Mota-Rojas et al.Prenatal development is mainly dependent on a close interrelation between nutritional supply use and regulation by hormones and growth factors. Mechanisms during early embryonic development are sensitive to manipulation through selected management strategies of the sow and modifications of this strategy may serve as a model for the examination of molecular and cellular events controlling early embryonic growth. The administration … …American Journal of Biochemistry and Biotechnology, Vol. 2, Issue 4 · 31 Dec 2006 · 6,626 accessesView PDFCite
Research ArticleOpen accessIn the abstractPerformance Comparison of Sub Phonetic Model with Input Signal ProcessingDr E. Ramaraj, E. ChandraThe quest to arrive at a better model for signal transformation for speech has resulted in striving to develop better signal representations and algorithm. The article explores the word model which is a concatenation of state dependent senones as an alternate for phoneme. The Research Work has an objective of involving the senone with the Input signal processing an algorithm … …Journal of Computer Science, Vol. 2, Issue 7 · 31 Jul 2006 · 6,298 accessesView PDFCite