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148  Articles
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This work provides an explanatory analysis of the influence of input parameters on the performance of subspace-based Direction of Arrival (DoA) estimation algorithms. The objective of this work is twofold. First, to drive a Steering Vector (SV) that works... see more

The conditions of the unicity of the best nonsymmetric L1L_1-approximant for the continuous vector-valued functions on the metric compact by one-dimensional subspace are obtained.

We obtain exact values of the interpolatory openings of certain subspaces of Hermitian splines for different knots over sets of continuously differentiable functions.

Banach space operators acting on some fixed space X are considered. If two such operators A and B verify the condition A2=B2 and if A has nontrivial hyperinvariant subspaces, then B has nontrivial invariant subspaces. If A and B commute and satisfy a spec... see more

In this paper, small signal analysis of power systems is investigated using Subspace System Identification (SSI) methods. Classical small signal analysis methods for power systems are based on mathematical modeling and linearized model of power system in ... see more

If A is a subset of the normed linear space X, then A is said to be proximinal in X if for each xÎX there is a point y0ÎA such that the distance between x and A; d(x, A) = inf{||x-y||: yÎA}= ||x­-y0||. The element y0 is called a best approximation for x f... see more

The necessary and sufficient conditions of the unicity of the best (¯a;¯ß)(\overline{\alpha};\overline{\beta})-approximant for the continuous vector-valued functions on the metric compact by one-dimensional subspace are obtained.

We obtained exact values of mutual deviation of interpolation subspaces of Hermitian splines of arbitraty orders on the classes of continuous and continuously differentiable functions in LpL_p spaces, 1?p?81 \leqslant p \leqslant \infty.

This paper is concerned with the construction some iterative methods for solving an operator equation on Hilbert spaces by using frames of subspaces. We design some algorithms based on the Richardson and Chebyshev methods, and investigate the convergence ... see more

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