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Corona Regime of Dual Bar Against a Plane

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Corona Regime of Dual Bar Against a Plane

Subdirectly Irreducible and Directly Indecomposable Lattice Implication Algebras

中国数学力学物理学高新技术交叉研究会第6届学术研讨会

作者： xu guozhong (department of applied physics,southwest jiaotong university)(chengdu 610031)

＜正＞The aim of this paper is to study the behaviour of bipolar corona with a dual parallel corona bar and a metallic *** experimental results showed that under otherwise identical conditions,the discharge depends strongly on the electrode separation between the *** investigating various separations the corona regim can be divided into three regions: independent,shunted,and shorted *** criterion for eliminating electrostatic charge without cvercompensation is also given.

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Chinese Quarterly Journal of Mathematics 2004年第4期19卷 385-392页

作者： WANG xue-fang, xu Yang, SONG Zhen-ming(1.department of Mathematics, Ocean university of china, Qingdao 266003, china 2.department of applied Mathematics, southwest jiaotong university, chengdu 610031, china) department of Mathematics Ocean University of China Qingdao 266003 China department of applied Mathematics Southwest Jiaotong University Chengdu 610031 China

Lattice implication algebra is an algebraic structure that is established by combining lattice and implicative algebra. It originated from the study on lattice-valued logic. In this paper, we characterize two special classes of lattice implication algebra, namely, subdi-rectly irreducible and directly indecomposable lattice implication algebras. Some important results are obtained.

关键词： many-valued logic lattice implication algebra filter ultra-filter prime filter

反向导引磁场自由电子激光中平衡态电子相轨道

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物理学报 1994年第7期43卷 1096-1104页

作者：徐勇张世昌西南交通大学应用物理系中国高等科学技术中心(世界实验室)理论物理分中心

考虑电子束自身场情况下，给出了反向导引磁场自由电子激光中平衡态电子运动的一种正则描述。证明了在可积极限下，不动点附近相轨道的稳定性；并采用美国麻省理工学院的反向导引场自由电子激光实验参数，计算了不同束流强度下的Ｐｏｉ... 详细信息

考虑电子束自身场情况下，给出了反向导引磁场自由电子激光中平衡态电子运动的一种正则描述。证明了在可积极限下，不动点附近相轨道的稳定性；并采用美国麻省理工学院的反向导引场自由电子激光实验参数，计算了不同束流强度下的Ｐｏｉｎｃａｒｅ截面。结果表明，即使自身场相当强（束流强度达到６０００Ａ），平衡态电子的相轨道仍保持其规则性，相空间没有出现混沌，这说明在自由电子激光器中，利用反向导引磁场可以获得比传统的采用正向导引磁场更好的电子束质量，从而改善器件的输出性能。

关键词：自由电子激光平衡态电子相轨道

The New Method for CNC Trajectory Machining Motion Planning Based on Reference Time

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武汉理工大学学报 2006年第S2期28卷 659-663页

作者： JIANG Yongmin~1 xu Mingheng~2 1.department of Mechanical Engineering,School of southwest jiaotong university,chengdu 610031,china, department of Mechanical Engineering School of Southwest Jiaotong UniversityChengdu 610031China

In order to make motion planning fitting practice,many characteristic of CNC trajectory motion are discussed, such as the geometric function,the motion and the *** is found that the relation between orbit function and motional parame- ter,so the differential equation about the trajectory motion be set-up by the goal of trajectory *** actual motion process is defined as reference time to link planning and *** a new movement planning method based on self-defining *** rest state,the differential simultaneous equation can be calculated according geometric characteristic analysis,it can be get that simple function consisted of coordinate and reference time *** motive state,dynamic parameter can be worked out accord- ing practical value of reference time,It is proved by experiment and simulation that it is a good way to control geometry and motion comprehensively,to reduce computation times and to increase the ability of environmental adaptation for path

关键词： reference time motion planning trajectory simultaneous equation hyperspace

Constructing Intranet for the Security of E-government

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Constructing Intranet for the Security of E-government

Effect of Uniaxial Stress onMagnetic Anisotropy of Rail Material

The Second Conference on Fuzzy Information & Engineering

作者： JIAJUN LAI department of applied Mathematics, southwest jiaotong university, chengdu 610031, china YANG xu department of applied Mathematics, southwest jiaotong university, chengdu 610031, china

Nowadays, the security of E-govemment has been the principal problem in many countries. Furthermore the security of Intranet has become more and more important. In this a new scheme is brought forward, that is,a new strong way of authentication combined with the service of authorization has been put forward into the PKI (Public Key Infrastructures) system. It overcomes the shortcomings of single PKI system completely and ensures the security of Intranet well.

关键词： time token intranet PMI

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Journal of Modern Transportation 1995年第1期12卷 101-107页

作者： xu Cuozhong Wang Sanhu(department of applied physics, southwest jiaotong university, chengdu 61 0031,china)

Crystal energy, magnetoelastic energy,and magnetic field enersy all haveeffects on magnetic property of ferromagnetic *** the purpose oftesting thermal stress in rails, this paper presented an analysis for the relationsamong these energy. According to the characteristics of the thermal stress,emphasis was given to the analysis of magnetic anisotropy induced by uniaxialstress in rail. The range of magnetic field strength that is suitable to measuringthermal stress was experimentally determined. The results show that withincertaiu range of field strength testins current varies almost quite linearly withthe stress .and it agrees well with the theoretical analysis.

关键词： rail thermal stress masnetic testing method

Research in Applpng Markov Chain to theForecast of Railway Running Accidents

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Journal of Modern Transportation 1994年第1期11卷 64-70页

作者： Ma guozhong(department of Transporlation Engineeing,Southuvest jiaotong university,)chengdu 610031, china

in this paper, the model and way of applying Markov chain to the forecast ofrailway running accidents have been put forward and through the areal case ofprediction, the conclusion of how to use the prediction model ha... 详细信息

关键词： accident safety prediction railway

A Generalized Rough Set Approach to Attribute Generalization in Data Mining

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Journal of Modern Transportation 2000年第1期17卷 69-75页

作者：李天瑞徐扬 department of applied Mathematics Southwest Jiaotong University Chengdu 610031 China

This paper presents a generalized method for updating approximations of a concept incrementally, which can be used as an effective tool to deal with dynamic attribute generalization. By combining this method and the LERS inductive learning algorithm, it also introduces a generalized quasi incremental algorithm for learning classification rules from data bases.

关键词： rough set data mining inductive learning

A New Aggregation Operator Based on Mapping and Its Evaluation Application

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A New Aggregation Operator Based on Mapping and Its Evaluati...