Dense linear algebra computations such as matrix factorization require the technique of`block-partitioned algorithms' for their eecient implementation on memory-hierarchy processors. For scalar-based distributed memory multiprocessors, the register, cache and oo-processor memory levels of the memory hierarchy all aaect the optimal block-partition size for such algorithms. Most studies on matrix...

Block multiple measurement vectors (BMMV) is a reconstruction algorithm that can be used to recover the support of block K-joint sparse matrix X from Y = ΨX + V. In this paper, we propose sufficient condition for accurate recovery via BMMV in noisy case. Furthermore, show optimality proposed absence noise when problem reduces single vector

in this paper, we use a combination of legendre and block-pulse functionson the interval [0; 1] to solve the nonlinear integral equation of the second kind.the nonlinear part of the integral equation is approximated by hybrid legen-dre block-pulse functions, and the nonlinear integral equation is reduced to asystem of nonlinear equations. we give some numerical examples. to showapplicability of...

Research is ongoing that examines parallel direct block-diagonal-bordered sparse linear solvers for irregular sparse matrix problems derived from electrical power system applications. Parallel block-diagonal-bordered sparse linear solvers exhibit distinct advantages when compared to current general parallel direct sparse matrix solvers. Our research shows that actual power system matrices can b...

the experimental study and modeling of gravity drainage during water alternative gas injection, wag process, in carbonate rock for one of the iranian off-shore reservoir at lab-scale were carried out. the mechanism of gravity drainage during the wag process, and its contribution to the oil recovery in the fractured carbonate reservoirs were also studied. in the wag process alternatively gas is ...

We provide a proof that entanglement of any density matrix which is block diagonal in subspaces are disjoint terms the Hilbert space one two potentially entangled subsystems can simply be calculated as weighted average present within each block. This especially useful for thermal-equilibrium states always inherit symmetries Hamiltonian, since block-diagonal Hamiltonians common, interactions inv...

We propose a new software package which would be very useful for implementing dense linear algebra algorithms on block-partitioned matrices. The routines are referred to as block basic linear algebra subprograms (BLAS), and their use is restricted to computations in which one or more of the matrices involved consists of a single row or column of blocks, and in which no more than one of the matr...

Recent hardware technologies have enabled acquisition of 3D point clouds from real world scenes in real time. A variety of interactive applications with the 3D world can be developed on top of this new technological scenario. However, a main problem that still remains is that most processing techniques for such 3D point clouds are computationally intensive, requiring optimized approaches to han...