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108 articles for “coupling”
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Research ArticleOpen accessIn the abstractA Novel Thermooptic Polymer Switch Based on Directional Coupler StructureAbu Sahmah Mohd Supa’at, Mohd. Haniff Ibrahim, Abu Bakar Mohammad et al.A novel thermooptic (TO) polymer switch based on directional coupler structure is proposed for the first time. The key element of the proposed switch is a buried square core polymer waveguides which has been designed for optimum mode matching and coupling with the single mode optical fiber configuration and have large effective index difference by the thermooptic effects. At a … …American Journal of Applied Sciences, Vol. 5, Issue 11 · 30 Nov 2008 · 6,380 accessesView PDFCite
Research ArticleOpen accessIn the abstractPublishing Geospatial Data through Geospatial Web Service and XML Database SystemPouria Amirian, Ali A. AlesheikhTechnically the spatial non-interoperability problem associated with current geospatial processing systems can be categorized as data and access non-interoperability. In GIS community, Open GIS Consortium (OGC) geospatial Web services have been introduced to overcome spatial noninteroperability problem associated with most geospatial processing systems. At the same time, in Information Technology (IT) world, the best solution for providing interoperability among heterogeneous … …American Journal of Applied Sciences, Vol. 5, Issue 10 · 31 Oct 2008 · 6,837 accessesView PDFCite
Research ArticleOpen accessIn the abstractAn Investigation on the Effect of the Coupled and Uncoupled Formulation on Transient Seepage by the Finite Element MethodAhad Ouria, Mohammad M. Toufigh, Ali Nakhai2-D transient seepage beneath a dam was investigated by the finite element method. Governing equations were considered in coupled and uncoupled methods. At first stage, the fluid continuity equation for compressible porous media considered as uncoupled. Because of the occurrence of seepage forces, and their interaction with the fluid pore pressure, particularly in high compressible soils, uncoupled methods seem to … …American Journal of Applied Sciences, Vol. 4, Issue 12 · 31 Dec 2007 · 7,076 accessesView PDFCite
Research ArticleOpen accessIn the abstractDynamics Modelling of a Plate Vibrating in a Perfect FluidBouarroudj Nadra, Belaib LekhmissiWe deal with the interaction problem of a plate vibrating within a perfect fluid. We establish the equations describing the dynamics behaviour of the plate using the general equations of the elasto-dynamic. The fluid flow described by the equation of Euler’s low amplitude. We presented results of the existence, the unicity and the regularity of the problem verified by the … …Journal of Mathematics and Statistics, Vol. 3, Issue 3 · 30 Sep 2007 · 6,900 accessesView PDFCite
Research ArticleOpen accessIn the abstractFlow Characteristics in Elastic Arteries Using a Fluid-Structure Interaction ModelH. Niroomand Oscuii, M. Tafazzoli Shadpour, Farzan GhalichiIn this study the interaction of blood flow with arterial wall has been investigated using FSI (Fluid-Structure Interaction) modeling. Computer simulation of pulsatile blood flow was carried out on the basis of the time dependent axisymmetric Navier-Stokes equations for an incompressible Newtonian fluid flow. An elastic incompressible material with large deformation was considered for the arterial wall and momentum and … …American Journal of Applied Sciences, Vol. 4, Issue 8 · 31 Aug 2007 · 7,432 accessesView PDFCite
Research ArticleOpen accessIn the abstractSSM: Slot Scheduling Mechanisms in a Multihop Wireless Hotspot NetworkMaan Younis AbdullahOur focus was to determine a "slot" time for message forwarding. To this end, we model the system as a "Queue" where the time for packet forwarding is determined by slot, at different slot range for each relaying node. We also introduced one important reason of the poor performance is the close coupling between medium contention and network congestion. Our … …Journal of Computer Science, Vol. 3, Issue 7 · 31 Jul 2007 · 6,449 accessesView PDFCite
Research ArticleOpen accessIn the abstractRecent Advances in the Synthesis of Artificial Antigen and Its Application in the Detection of Pesticide ResidueTong Dewen, Hesheng Yang, Wang JinyiRecent advances in the research of artificial antigen have shown that artificial antigens can be valuable approach for the treatment of some diseases as well as the detection of pesticide residues. By directly/indirectly coupling hapten to an appropriated carrier (macromolecule), artificial antigen can induce animals to produce hapten-specific antibody. Based on this principle, various vaccines have been developed. More impotently, … …American Journal of Agricultural and Biological Sciences, Vol. 2, Issue 2 · 30 Jun 2007 · 7,617 accessesView PDFCite
Research ArticleOpen accessIn the abstractSeamless Handoff Using Mailbox ApproachManpreet Singh, Rajneesh GujralMobile IP is used to keep track of location information and make the data available to the mobile devices anytime, anywhere. Mobile IP has been widely accepted but lacks in providing seamless handoff. We have proposed a framework for wireless network that uses a flexible and adaptive mailbox-based scheme. In this scheme a mailbox associated with each mobile node while … …Journal of Computer Science, Vol. 3, Issue 4 · 30 Apr 2007 · 7,010 accessesView PDFCite
Research ArticleOpen accessIn the abstractNumerical Study of the Moving Boundary Problem During Melting Process in a Rectangular Cavity Heated from BelowY. Jellouli, R. Chouikh, A. Guizani, A. BelghithWe present an analysis of the melting process in Phase Change Materials (PCM) in a horizontal cavity heated from below, driven by the coupling of transient heat conduction in the solid phase and steady state laminar natural convection in the liquid phase with one of the boundaries of the solution domain that moves. We state the problem in the Cartesian … …American Journal of Applied Sciences, Vol. 4, Issue 4 · 30 Apr 2007 · 7,396 accessesView PDFCite
Research ArticleOpen accessIn the abstractQualitative Assessments of the Software Architectures of Configuration Management SystemsAbhay Kothari, A. K. Ramani, P. K. ChandeThe Configuration Management (CM) is a very important area of concentration in software development and maintenance processes. Quality parameters for Configuration Management Tools’ architectural designs require rigorous identification and measurement. Two methods for quantitative assessment of quality parameters of the software architectures are proposed. These methods are based upon modularization properties, like, cohesion type, coupling type, module complexity, module size … …Journal of Computer Science, Vol. 2, Issue 1 · 31 Jan 2006 · 6,814 accessesView PDFCite