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Taiyuan, China

Taiyuan University of Science and Technology is a university in Shanxi, People's Republic of China under the authority of the provincial government. It is located in the capital city of Shanxi Province, Taiyuan, a historical and cultural city.Taiyuan University of Science and Technology is a comprehensive university with distinct characteristicsTemplate:Such as? and splendid traditionsTemplate:Such as?. It has been one of the major bases for training the technical personnel and scientific research in he field of heavy technological equipment manufacture in China. Wikipedia.

Li J.-N.,Hangzhou Dianzi University | Li L.-S.,Taiyuan University of Science and Technology
Neurocomputing | Year: 2015

In this paper, the mean-square exponential stability problem for discrete-time recurrent neural networks with time-varying discrete and distributed delays is investigated. Considering the delay distributions, a novel class of Lyapunov functional is introduced. By exploiting all possible information in mixed time delays, a sufficient condition for the whole system to be mean-square exponentially stable is given. Numerical examples are proposed to illustrate the effectiveness of the method, and show that by using the approach in this paper, the obtained results are less conservative than the existing ones. © 2014 Elsevier B.V.

Song S.,Taiyuan University of Science and Technology
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | Year: 2013

A novel double shell-pass heat exchanger with sleeve tube and continuous helical baffles was proposed. The sleeve tube was applied to separate the shell-pass into two parts, the inner one having no baffles and the external one with helical baffles. Based on the 3-dimensional physical model of the heat exchangers, with the k- turbulent model, SIMPLE pressure-velocity coupling algorithm and segregated solver, the flow and heat transfer characteristics of the novel double shell-pass heat exchanger with sleeve tube and continuous helical baffles were studied by means of computational fluid dynamics (CFD) software. The results indicate that, under same velocity flow rate, the pressure drop of the novel heat exchanger is 62.17% and 22.76%, lower than the conventional segmental baffled heat exchangers and conventional helical baffled heat exchangers. The heat transfer rate is increased by 25.98% and 21.79% compared with the two types of heat exchangers. The pressure drop under unit heat transfer rate was applied to evaluate the comprehensive performance of heat exchangers. Compared to these two types of heat exchangers, the value of the novel heat exchanger is reduced by 68.93% and 38.69%, respectively.

Ren H.,Taiyuan University of Science and Technology | Cheng Y.,Shanghai University
Engineering Analysis with Boundary Elements | Year: 2012

In this paper, the moving least-squares (MLS) approximation and the interpolating moving least-squares (IMLS) method proposed by Lancaster are discussed first. A new method for deriving the MLS approximation is presented, and the IMLS method is improved. Compared with the IMLS method proposed by Lancaster, the shape function of the improved IMLS method in this paper is simpler so that the new method has higher computing efficiency. Then combining the shape function of the improved IMLS method with Galerkin weak form of the potential problem, the interpolating element-free Galerkin (IEFG) method for the two- dimensional potential problem is presented, and the corresponding formulae are obtained. Compared with the conventional element-free Galerkin (EFG) method, the boundary conditions can be applied directly in the IEFG method, which makes the computing efficiency higher. For the purposes of demonstration, some selected numerical examples are solved using the IEFG method. © 2011 Elsevier Ltd. All rights reserved.

Wang J.-A.,Taiyuan University of Science and Technology
Chinese Physics B | Year: 2011

The problem of delay-dependent asymptotic stability for neural networks with interval time-varying delay is investigated. Based on the idea of delay decomposition method, a new type of Lyapunov - Krasovskii functional is constructed. Several novel delay-dependent stability criteria are presented in terms of linear matrix inequality by using the Jensen integral inequality and a new convex combination technique. Numerical examples are given to demonstrate that the proposed method is effective and less conservative. © 2011 Chinese Physical Society and IOP Publishing Ltd.

Gu J.,Lanzhou University | Gao Z.,Taiyuan University of Science and Technology | Tang Y.,Lanzhou University
Crystal Growth and Design | Year: 2012

A ligand 5-(2′-carboxylphenyl) nicotic acid (H 2cpna) has been successfully applied to construct a series of coordination complexes {[Cd(Hcpna) 2(H 2O) 2]•3H 2O} n (1), [Cd(cpna)(H 2O)] n (2), [M(cpna)(2,2′-bipy)(H 2O)] n (M = Cd (3), Co (4), and Mn (5)), [Co(cpna)(phen)(H 2O)] n (6), [Mn(cpna)(phen) (H 2O)] n (7), {[Nd(Hcpna)(cpna)(H 2O) 2]•3H 2O} n (8), and {[Ln(Hcpna)(cpna)(phen) ]•2H 2O} n (Ln = Pr (9), Nd (10), Eu (11), and Gd (12), 2,2′-bipy = 2,2′-bipyridine, phen = 1,10-phenanthroline) under hydrothermal conditions. By adjusting the reaction pH, H 2cpna ligand is partially deprotonated to form Hcpna - in 1 and completely deprotonated to create cpna 2- in 2-7, and both forms are observed in 8-12. Complexes 1-5 and 8 possess two-dimensional (2D) layered structures, which are further extended into 3D metal-organic supramolecular frameworks by C-H•••O hydrogen bond and/or π-π stacking interactions. Complexes 6, 7, and 9-12 exhibit one-dimensional (1D) chain structures, which further build three-dimensional (3D) supramolecular architecture via C-H•••O hydrogen-bonding and/or π-π stacking interactions. The results revealed that the pH value of the reaction system and auxiliary ligand play an important role in determining the structures of the complexes. Magnetic susceptibility measurements indicate that compounds 4-10 and 12 have dominating antiferromagnetic couplings between metal centers. Furthermore, thermal stabilities for 1-12 and luminescent properties for 1-3, and 11 are also discussed in detail. © 2012 American Chemical Society.

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