نتایج جستجو برای: bem
تعداد نتایج: 12399 فیلتر نتایج به سال:
When perfect channel state information (CSI) is available at a receiver, the maximum Doppler diversity gains from frequency flat time selective (FFTS) fading channels can be achieved with a pair of judiciously designed precoding and grouping scheme. When CSI is not available at the receiver, modelling FFTS fading channels with basis expansion models (BEM) enables channel estimation without know...
With growing concerns about global energy demand and climate change, it is important to focus on efficient utilization of electricity in commercial buildings, which contribute significantly to the overall electricity consumption. Accordingly, there has been a number of Building Energy Management (BEM) software/hardware solutions to monitor energy consumption and other measurements of individual...
Maintenance of proper neuronal excitability is vital to nervous system function and normal behavior. A subset of Drosophila mutants that exhibit altered behavior also exhibit defective motor neuron excitability, which can be monitored with electrophysiological methods. One such mutant is the P-element insertion mutant bemused (bem). The bem mutant exhibits female sterility, sluggishness, and in...
The Time-Domain Boundary Element Method (TDBEM) is a well known numerical technique that handles quite properly dynamic analyses considering infinite dimension media. However, when these analyses are also related to nonlinear behavior, very complex numerical procedures arise considering the TD-BEM, which may turn its application prohibitive. In order to avoid this drawback and model nonlinear i...
The forward problem in electroencephalography aims to simulate on the scalp the potential V of an electromagnetic field generated by a simulated source. It must fit precisely with the electromagnetic propagation in the patient head. Yet, the skull anisotropy happens to be highly anisotropic, and must then be modeled. Although boundary element methods cannot deal with anisotropy like finite elem...
In this paper, recent development of the dual BEM in acoustic problem is presented. The role of hypersingular integral equation in the dual BEM for the problems with a degenerate boundary is examined. First, the dual integral formulation is proposed. Based on the formulation, we develop four methods ± the complex-valued dual BEM, the real-part dual BEM, the real-valued dual MRM, and the complet...
Dynamic analysis of a pile embedded in a half-space soil covered by a water layer is crucial for the designs of the pile foundations for bridges, docks and offshore platforms etc. In this paper, a coupled boundary element method (BEM) model is developed to evaluate the dynamic response of the pile. In the proposed model, the pile and half-space soil are treated as elastic media, while the water...
Building energy simulation has become an important method for reducing energy use and carbon dioxide emissions in sustainable building design. In the last decade, we have witnessed the employment of building information model (BIM) and internet technologies to be harnessed for energy-efficient building design. In this research the data exchange between a Building Information Model (BIM) and a B...
Diffuse Optical Imaging (DOI), the study of the propagation of Near Infra-Red (NIR) light in biological media, is an emerging method in medical imaging. Its state-of-the-art is non-invasive, versatile and reasonably inexpensive. In Diffuse Optical Tomography (DOT), the adaptation of numerical methods such as the Finite Element Method (FEM) and, more recently the Boundary Element Method (BEM), h...
We consider the problem of multiuser detection for DSCDMA in doubly-selective (timeand frequency-selective) channels, and propose a time-varying multiuser detector (TVMUD) to solve this problem. Using a basis expansion model (BEM) to model the doubly-selective channel and the TVMUD, we derive a closed-form expression for the BEM coefficients of the TV-MUD as a function of the BEM coefficients o...
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