In this paper, the free vibration analysis of moderately thick rectangular plates axially moving with constant velocity and subjected to uniform in-plane loads is investigated by the spectral finite element method. Two parallel edges of the plate are assumed to be simply supported and the remaining edges have any arbitrary boundary conditions. Using Hamilton’s principle, three equations of moti...

Tutte found an excluded minor characterization of graphic matroids with five excluded minors. A variation on Tutte's result is presented here. Let (e, f, g} be a circuit of a 3-connected nongraphic matroid M. Then M has a minor using e, A g isomorphic to either the 4-point line, the Fano matroid, or the bond matroid of K 3,3' 0 1984 Academic Press, Inc.

Adaptive bit-loading algorithms can improve the performance of OFDM systems significantly. The tradeoff between the performance of the algorithm and its computational complexity is essential for the implementation of loading algorithms. In this paper, we present a low complexity non-iterative discrete bit-loading algorithm to maximize the data rate subject to specified target BER and uniform po...

Impact is one of very important subjects which always have been considered in mechanical science. Nature of impact is such that which makes its control a hard task. Therefore it is required to present the transfer of impact to other vulnerable part of a structure, when it is necessary, one of the best method of absorbing energy of impact, is by using Thin-walled tubes these tubes collapses unde...

Let K and X be compact plane sets such that K X. Let P(K)be the uniform closure of polynomials on K. Let R(K) be the closure of rationalfunctions K with poles o K. Dene P(X;K) and R(X;K) to be the uniformalgebras of functions in C(X) whose restriction to K belongs to P(K) and R(K),respectively. Let CZ(X;K) be the Banach algebra of functions f in C(X) suchthat fjK = 0. In this paper, we show th...

We address the problem of controlling a team of robots to form a uniform circle. More specifically, we study the convergence of a distributed circle formation algorithm using computer simulation. The algorithm operates under the hypothesis that robots (1) are oblivious in the sense that they are unable to recall past actions and observations, (2) share no common sense of direction, and (3) have...

Misalignment or unbalanced loading of machine tool spindle bearings often results in skewed bearing operation, which makes the more susceptible to failure. In addition, due weak impact signal a single feature information cannot accurately characterize operation status bearing. To address above problems, this paper proposes method monitor uneven running state load based on dual-channel fusion im...