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1,540 articles for “current”

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Research ArticleOpen accessEvery word in the titleVertical Axis Marine Current Turbine ModellingRikhi Ramkissoon, Krishpersad ManoharThe development of alternative energy sources has attracted worldwide interest given the adverse effects of fossil fuels on the global climate as well as their unsustainability. This study examines the feasibility of marine power generation off the East Coast of Trinidad and Tobago and focuses mainly on the Vertical Axis Marine Turbine as the power generator. At this location where … …Energy Research Journal, Vol. 13, Issue 1 · 24 Dec 2022 · 9,658 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Coastal Current of the Andaman Sea Revealed by Reprocessed ObservationsSakharin Suwannathatsa, Prungchan Wongwises, Worachat Wannawong, Suphat VongvisessomjaiProblem statement: The surface currents in the Andaman Sea are observed and quantified by many studies in opposite of the local coastal current that is unclear. Knowing the contributor to this local current improves the simulation work in the most accurate way. This study reviews reprocessed observations from satellites and creates an oceanic model by taking data of 1995 to … …American Journal of Applied Sciences, Vol. 9, Issue 7 · 22 May 2012 · 7,067 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleReduction of Over Line Current in Power System from Short Circuit Effect Using Static Synchronous Series CompensatorPrechanon KumkratugProblem statement: One of the major problems in power system is the over line current from short circuit effect. It may cause in the electrical apparatus outages. Approach: Static Synchronous Series Compensator (SSSC) is a power electronic based device that has the capability of controlling the line current. This study applies the SSSC to decrease the over line current in … …American Journal of Applied Sciences, Vol. 8, Issue 2 · 28 Feb 2011 · 7,304 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAnalysis of Leakage Current to Predict Insulator Flashover Using Artificial Neural NetworkN. Narmadhai, A. Ebenezer JeyakumarProblem statement: The phenomenon of flashover in polluted insulators has been continued by the study of the characteristics of contaminating layers deposited on the surface of insulators in high voltage laboratories. In the literature, Experimental investigations have been carried out on a real insulator or a flat plate model of insulators under high voltage application. This study proposed the Equivalent … …Journal of Computer Science, Vol. 7, Issue 2 · 25 Feb 2011 · 7,618 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleRobust of Doppler Centroid for Mapping Sea Surface Current by Using Radar Satellite DataMazlan Hashim, Maged MarghanyProblem statement: Sea surface current retrieving from Synthetic Aperture Radar (SAR) is required standard methods due to the complexity of sea surface ocean imaging in SAR data. In this context, various analytical models have been developed which describe overall effects of sea surface roughness on the Doppler signal mechanisms. Nevertheless, such models are limited in the complexity of the sea … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 4 · 31 Dec 2009 · 7,415 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleBudget Deficits and Current Account Deficits in the Philippines: A Casual Relationship?Mosayeb Pahlavani, Ali Salman SalehProblem statement: The problem of budget deficits and current account imbalances has attracted serious consideration from academics and policy-makers in both developed and developing countries. The question is whether such relationships between budget deficits and current account deficits exist in the case of Philippines. Approach: The purpose of this study was to test the validity of the Keynesian proposition and … …American Journal of Applied Sciences, Vol. 6, Issue 8 · 31 Aug 2009 · 8,078 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAnalysis of Water Properties and Geostrophic Currents in Fiji Waters Before and After Tropical Cyclone GeneShivneel Prasad, Than Aung, Awnesh SinghProblem statement: Water properties influence ocean primary production and drive the ocean food chain. This study depicts changes in temperature and salinity and its effects on geostrophic currents near Fiji before and after Tropical Cyclone (TC) Gene. Approach: Available Argo float data from 6 January-4 February 2008 were used for analysis since TC Gene passed the area on 28 January … …American Journal of Environmental Sciences, Vol. 5, Issue 3 · 30 Jun 2009 · 6,947 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of the 2004 'Boxing Day' Tsunami on Water Properties and Currents in the Bay of BengalNaveendra Reddy, Than Aung, Awnesh SinghProblem statement: Variation of temperature, salinity and geostrophic current in the Bay of Bengal due to the 2004 Boxing Day tsunami was investigated in this project using ARGO float and absolute dynamic height topography data. This was done to determine the effect of the tsunami on the water properties in the bay. Approach: The study area was between latitudes 5º … …American Journal of Environmental Sciences, Vol. 5, Issue 3 · 30 Jun 2009 · 7,386 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleOptimal Dark Current Reduction in Quantum Well 9 µm GaAs/AlGaAs Infrared Photodetectors with Improved DetectivityShahram Mohammad Nejad, Saeed Olyaee, Maryam PourmahyabadiIn this research, an optimization approach is presented to decrease the dark current in GaAs/AlGaAs QWIPs. The dark current noise is reduced by increasing Al density in barriers, decreasing detector dimensions and increasing the periodic length of the structure. In addition, increasing the number of periods can reduce both the dark current and responsivity. Therefore, devices can be optimally designed … …American Journal of Applied Sciences, Vol. 5, Issue 8 · 31 Aug 2008 · 7,188 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleComputation of a Single-phase Shell-Type Transformer Windings Forces Caused by Inrush and Short-circuit CurrentsM. B.B. Sharifian, R. Esmaeilzadeh, M. Farrokhifar et al.This research studies the forces on the windings of transformer due to inrush current. These forces are compared with the corresponding forces due to short-circuit of the windings. Two-dimensional finite element computation of a single-phase shell-type transformer is carried out based on the maximum permissible inrush current value where its amplitude is the same as the rated short-circuit current. To … …Journal of Computer Science, Vol. 4, Issue 1 · 31 Jan 2008 · 7,429 accessesView PDFCite