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Xiping Liu,Jingfu Jin,Mei Jia 한국전산응용수학회 2012 Journal of applied mathematics & informatics Vol.30 No.1
In this paper, we study a class of integral boundary value problems for fractional differential equations. By using some fixed point theorems, the results of existence of at least three positive solutions for the boundary value problems are obtained.
Xiping Yang,Yonghong Fu,Xin Kuang 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.10
In this paper, Cr12 steel was taken as the research object, and laser micro melting model was established in comsol softwarebased on physical equations such as laser heat source, convection heat transfer, evaporation mobility, recoil pressure,Marangoni effect. The forming mechanism and evolution law of concave–convex microtexture morphology were studiedby numerical simulation. The research reveals the changing process of the velocity of the flow field inside the material duringthe surface deformation. In addition, it can be found from the temperature field changes under different power that thehigher the power is, the faster the surface temperature of Cr12 material increases in the process of thermal deformation. Andthe hardness of the microtexture was greatly improved after the material experienced sudden heat and cold in a very shorttime. By comparing the numerical simulation results and the experimental results, it can be found that with the increase ofpower, the height, depth and diameter of the concave–convex microtexture morphology all show an increasing trend, andthe surface geometry obtained through numerical simulation matches well with the experimental results. It indicates thatthe numerical simulation has high feasibility and can effectively reflect the forming process and morphology of concaveconvexmicrotexture.
The iteration method of solving a type of three-point boundary Value Problem
Xiping Liu,Mei Jia 한국전산응용수학회 2009 Journal of applied mathematics & informatics Vol.27 No.3
This paper studies the iteration method of solving a type of second-order three-point boundary value problem with non-linear term f, which depends on the first order derivative. By using the upper and lower method, we obtain the sufficient conditions of the existence and uniqueness of solutions. Furthermore, the monotone iterative sequences generated by the method contribute to the minimum solution and the maximum solu- tion. And the error estimate formula is also given under the condition of unique solution. We apply the solving process to a special boundary value problem, and the result is interesting. This paper studies the iteration method of solving a type of second-order three-point boundary value problem with non-linear term f, which depends on the first order derivative. By using the upper and lower method, we obtain the sufficient conditions of the existence and uniqueness of solutions. Furthermore, the monotone iterative sequences generated by the method contribute to the minimum solution and the maximum solu- tion. And the error estimate formula is also given under the condition of unique solution. We apply the solving process to a special boundary value problem, and the result is interesting.
Liu, Xiping,Wang, Chen,Zheng, Aihua Journal of International Conference on Electrical 2012 Journal of international Conference on Electrical Vol.1 No.3
The operation principle of an axial flux-switching hybrid excitation synchronous machine (AFHESM) is analyzed and its topology structures are proposed in this paper. After some comprehensive analysis of the operation principle to axial flux electrical machine, flux-switching electrical machine and hybrid excitation electrical machine, the operation principle of AFHESM is given. Combined with some typical topological structures of hybrid excitation electrical machine, some possible topological structures are proposed and some comprehensive comparisons are carried out. The analysis results show that the stator-separated AFHESM has some advantages such as less AM turns, less impact on the demagnetization of PM, less magnetic flux-leakage and higher efficiency compared to other topologies.
THE ITERATION METHOD OF SOLVING A TYPE OF THREE-POINT BOUNDARY VALUE PROBLEM
Liu, Xiping,Jia, Mei The Korean Society for Computational and Applied M 2009 Journal of applied mathematics & informatics Vol.27 No.3
This paper studies the iteration method of solving a type of second-order three-point boundary value problem with non-linear term f, which depends on the first order derivative. By using the upper and lower method, we obtain the sufficient conditions of the existence and uniqueness of solutions. Furthermore, the monotone iterative sequences generated by the method contribute to the minimum solution and the maximum solution. And the error estimate formula is also given under the condition of unique solution. We apply the solving process to a special boundary value problem, and the result is interesting.
( Zhang Xiping ) 성균관대학교 유교문화연구소 2015 儒敎文化硏究(中文版) Vol.0 No.24
《中國哲學家孔子》是儒學西傳歐洲的奠基性著作, 本文對這部飜譯著作的出版歷史背景, 書的基本內容做了硏究。進而說明, 這部著作是當時禮儀之爭的一個結果, 也是來華的耶穌會士爲說明自己的“合儒”傳敎路線所做的努力成果。同時, 這部書的出版使東亞的儒學思想首次進入了歐洲近代思想的發展歷程, 儒家思, 從而說明了儒家思想的世界性意義。 The Chinese Philosopher Confucius was a groundbreaking book in Confucianism’s dissemination to Europe. This article presents research on the background and contents of the book, concluding that this great work largely emerged from the Chinese Rites Controversy in the 17th and 18th centuries, and was particularly influenced by the Jesuit argument that these Chinese rites were secular rituals that were compatible with Christianity, within certain limits, and should thus be tolerated. At the same time, the publishing of this book marked the first time in history that Confucianism from Eastern Asia became available to European philosophers, and its publication and distribution properly marks the beginning of the influence Confucianism exerted on modern European ideology, as well as an important moment in the development of Confucianism’s worldwide influence. [Article in Chinese]
A Stator-Separated Axial Flux-Switching Hybrid Excitation Synchronous Machine
Liu, Xiping,Zheng, Aihua,Wang, Chen Journal of International Conference on Electrical 2012 Journal of international Conference on Electrical Vol.1 No.4
In this paper, a stator-separated axial flux-switching hybrid excitation synchronous machine (SSAFHESM) is presented, of which the structure and operational principle are introduced. The magnetic field distribution under different excited currents is analyzed, and some characteristics including flux-linkage, EMF and field control ability are studied by finite element analysis (FEA). Tests are carried out on a 12/10-pole prototype machine to validate the analysis results, and an excellent agreement is obtained.
Liu, Xiping,Jin, Jingfu,Jia, Mei The Korean Society for Computational and Applied M 2012 Journal of applied mathematics & informatics Vol.30 No.1
In this paper, we study a class of integral boundary value problems for fractional differential equations. By using some fixed point theorems, the results of existence of at least three positive solutions for the boundary value problems are obtained.