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Kaohsiung, Taiwan

National Kaohsiung Marine University is a university in Nanzih District, Kaohsiung, Taiwan. The current total number of students is 8,000. Wikipedia.

Kuo C.-L.,National Kaohsiung Marine University
Computers and Mathematics with Applications | Year: 2011

This investigation presents a fuzzy sliding-mode technology for synchronizing two chaotic systems. A method of designing a fuzzy sliding-mode control (FSMC) is presented, which utilizes a variable normalization factor. FSMC is designed to guarantee the global asymptotic synchronization of state trajectories of two different chaotic systems. The chaotic systems are numerically simulated to demonstrate the validity and feasibility of the proposed control structure. © 2010 Elsevier Ltd. All rights reserved. Source

Chen C.-W.,National Kaohsiung Marine University
Applied Soft Computing Journal | Year: 2011

In this study a neural-network (NN) based approach is developed which combines H∞ control performance with Tagagi-Sugeno (T-S) fuzzy control for the purpose of stabilization and stability analysis of nonlinear systems. A Takagi-Sugeno (T-S) fuzzy model and parallel-distributed compensation (PDC) scheme are first employed to design a nonlinear fuzzy controller for the stabilization of nonlinear systems. The neural-network model is adopted to overcome the modeling error problems found with nonlinear systems. A novel stability condition based on an NN-based controller design is derived to ensure the stability of the nonlinear system. The control problem can now be reformulated as a linear matrix inequality (LMI) problem. A simulation is provided in order to explore the feasibility of the proposed fuzzy controller design method. © 2010 Elsevier B.V. All rights reserved. Source

Bu I.Y.Y.,National Kaohsiung Marine University
Journal of Alloys and Compounds | Year: 2011

Zinc oxide (ZnO) is a wide band-gap material with excellent optoelectronic properties. However, the application of ZnO to optoelectronic devices using ZnO has been hindered by the difficulty in obtaining a stable p-type doping. The paper demonstrates that, with a proper selection of the nitrogen precursor, a solution processable, highly c-axis oriented, stable, and p-type aluminium co-doped ZnO (NZO) formation can be obtained. In this study, the NZO films were characterized by using EDS, Raman spectroscopy, photoluminescence, and electrical measurements, respectively. The films were then synthesized through a sol-gel process that was below 600 °C. For the comparative study, NZO films without the Al co-doping were also prepared by sputter. It is observed and shown that, with the formation of nitrous oxide, the basic deposition condition will be more beneficial towards the formation of p-type ZnO. © 2010 Elsevier B.V. All rights reserved. Source

Su C.-L.,National Kaohsiung Marine University
IEEE Transactions on Power Systems | Year: 2010

Distributed generation (DG) connected to distribution networks affects the currents or power flows in the networks; thus, node voltages that are strongly related to power flows also are changed. As the voltage must be within permitted limits to comply with utility and customer requirements, this effect should be assessed prior to DG connection. At the distribution level there are a number of attributes that can influence the voltage profiles; therefore, this assessment requires detailed distribution operation models. To provide reliable voltage evaluation results, a new probabilistic methodology is proposed in this paper. The distribution system operation uncertainties including daily time varying load, stochastic DG power production, network configuration, and voltage control devices operation are all taken into account. A probabilistic load flow method based on an efficient algorithm is used to handle uncertainties in loads and DG output power and voltage control devices operation. Accordingly, a probabilistic network reconfiguration model is employed to take stochastic network configurations for service restoration or load balancing into consideration. The proposed probabilistic method provides a better knowledge of the voltage effects and can be used for evaluating the level of DG that might be accepted on a distribution network. The models developed can also be used for assessing impact of voltage mitigation equipment on distribution operating performance. Test results of a modified IEEE feeder test system demonstrate the performance of the proposed method. © 2010 IEEE. Source

Hwang Y.-H.,National Kaohsiung Marine University
Numerical Heat Transfer, Part B: Fundamentals | Year: 2011

An accurate moving particle method for incompressible flow calculations is presented in this article. The major distinctive feature in this proposition is the insertion of a pressure mesh within the particle cloud to handle the continuity constraint. It is motivated by the thought that pressure should be a field variable rather than a material one moving with fluid flow. Both the diffusion and convection operators are executed on the particle locations, while the projection operator to retain a convergence-free velocity field is manipulated on the inserted pressure mesh. It will yield a diagonally dominant and constant-coefficient matrix equation to update the pressure field. Besides the advantages gained to enforce the continuity constraint, the auxiliary mesh can significantly enhance the particle searching efficiency in the particle smoothing process. Numerical verifications on some benchmark problems indicate that the present proposition will provide accurate results for incompressible flow calculations. Copyright © Taylor & Francis Group, LLC. Source

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