In this study, the analysis of inherent irreversibility of chemical reactive third-grade poiseuille flow of a variable viscosity with convective cooling is investigated. The dissipative heat in a reactive exothermic chemical moves over liquid in an irreversible way and the entropy is produced unceasingly in the system within the fixed walls. The heat convective exchange with the surrounding tem...

PURPOSE The objective of this study was to assess the value of high-resolution computed tomography (HRCT) and that of magnetic resonance imaging (MRI), including postcontrast T(1)-weighted images and echo-planar diffusion-weighted (EP-DW) images, in the detection of residual cholesteatomas after primary bony obliteration of the mastoid. PATIENTS AND METHODS Twenty-three patients underwent a s...

PURPOSE To propose a method to reduce the slab boundary artifacts in three-dimensional multislab diffusion MRI. METHODS Bloch simulation is used to investigate the effects of multiple factors on slab boundary artifacts, including characterization of residual errors on diffusion quantification. A nonlinear inversion method is proposed to simultaneously estimate the slab profile and the underly...

The method of input shaping has been shown to yield good performance in the control of exible structures while being insensitive to modeling errors. However, previous studies do not take into account the distributions of the parameter variations. We develop a new input shaping method that allows the ranges of system parameter values to be weighted according to the expected modeling errors. Comp...

Method: Collocation Method (a Weighted Residual Method) Given a differential equation L[u] = 0 for u(ξ) with ξ ∈ Q (Q some domain) and boundary conditions B[u] = 0, we seek an approximate solution u(ξ) = w(ξ;α) where α = {αj}j=1 is a set of parameters and B[w] = 0 for all choices of α. We try to determine the α by requiring that the equation be satisfied by w at a set of points S = {ξj}j=1 ⊂ Q....

A generalized refined Arnoldi method based on the weighted inner product is presented for computing PageRank. The properties of the generalized refined Arnoldi method were studied. To speed up the convergence performance for computing PageRank, we propose to change the weights adaptively where the weights are calculated based on the current residual corresponding to the approximate PageRank vec...

This paper introduces an framework for adaptivity for a class of heterogeneous multiscale finite element methods for elliptic problems, which is suitable for a posteriori error estimation with separated quantification of the model error as well as the macroscopic and microscopic discretization errors. The method is derived within a general framework for “goal-oriented” adaptivity, the so-called...

Fundamental frequency (F0) estimation is important in speech processing such as speech coding, synthesis, recognition and so on. A present F0 estimation method performs well under clean condition, however the performance deteriorates significantly in noisy environment. As a result, robust F0 estimation against additive noise is demanded. We have previously proposed F0 estimation methods based o...

A systematic evaluation of the influence of different averaging methods on the quality of recorded auditory brain stem responses is performed on a single sweep basis, i.e., on a post-hoc analysis of all unaveraged single epochs. The question of an optimal averaging method is addressed. Single sweeps of auditory brain stem responses were recorded to monaural and binaural click stimuli at levels ...

In recent years, we have witnessed a flourishing of 3D object modelling. Efficient and effective 3D model retrieval algorithms are high desired and attracted intensive research attentions. In this work, we propose a view-based 3D model retrieval algorithm based onweighted locality-constrained group sparse coding. Representative views are first selected by clustering and the corresponding weight...