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Integrated Standardization and Systems Engineering Management

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厦门大学学报（自然科学版） 2002年第S1期41卷 235-236页

作者： RUAN Jin-yuan 1, SUN Shu-tao 2. YU Xin-qi 3, RUAN Xin 4 (1. Ordance Institute of General Equipment department, Shiji azhuang 050000, china 2. Graduate School of Chinese Academic of Science, Beijing 100042. china 3. East china university of Science and Technology, Shanghai 2.02.2. china 4. Meterology Bureau of Hebei Province, Shijiazhuang 05002., china)

Integrated standardization is one of the fundamenta l forms of modern standardization. It is the combination of system science and the content of standardization. The development of system science has provided theo retic foundation and precondition for integrated standardization. The relevant r esearch on integrated standardization and system engineering illustrate that int egrated standardization is a advanced method which presented with the developmen t of modern science and technology . Integrated standardization treat the re levant factors of standardization as a system, and wholly standarlize the factor s in order to reach the best level of technology and quality. Integrated standardization is a large system engineering. In modern industr y the contact among different departments is being constantly enlarged and t he complexity of product is being constantly increased. This situation demands s trict correspond and united request in all the following aspects: raw mate rial, organs, fittings, technical measures of production, preparation for produc tion, ways of organizing the production. The traditional measure which establish the respective standard separately must be replaced by multi-spetialty standa rdization in large spectrum. The current situation and the development of syste m science has provided theoretic foundation and precondition for this kind of st andardization. Product or project can be managed with system engineering of proj ect, while the correspond standardization can be managed with system engineering of standardization. Integrated standardization virtually is system engineering of standardization, w hich use the theory to deal with the problem about standardization . This thesis included 3 chapters: 1. the brief summary of integrated standardization and sys tem engineering management in the development of type in foreign countries; 2. t he current situation and existing problems in the development of products; 3. ho w to organize and actualiz

关键词： integrated standardization system engineering ma nagement

A NEW APPROACH TO THE SIMULATION OF UNSTEADY SUBCRITICAL FLOW

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Journal of Hydrodynamics 1995年第3期7卷 84-93页

作者： Mao Ze-yu(department of Hydraulic Engineering, Tsinghua university Beijing 100084, P. R.{2.) Tsinghua Univ Beijing China

The use of the specified time interval numerical schemes has been popular in applying the method of characteristics to unsteady oped-channel flow problem. Studies and analyses of several variants of those schemes have led to the derivation of a complete set of timeline-interpolation scheme in applying the method of characteristics to Saint-Venant equations. A computer model based upon this scheme has ben successfully developed for predicting free surface unsteady flow, and has been verified by field experiment. Timeline interpolations, where the characteristic lines are projected back before the current time step,demonstrate much less damping than the corresponding spatial interpolation scheme at the same discretization.

关键词： open-channel flow unsteady flow simulation characteristics method,timeline interpolation scheme

1-苯基-3-甲基-4-苯甲酰基吡唑酮-5对铒(Ⅲ)及铥(Ⅲ)萃取的溶剂效应

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无机化学学报 1989年第4期5卷 43-51页

作者：罗明润程立曹子卿张风美安徽师范大学化学系

本文用斜率法研究了1-苯基-3-甲基-4-苯甲酰基吡唑酮-5(HPMBP,HA)从硝酸介质中对铒(Ⅲ)或铥(Ⅲ)萃取的溶剂效应.萃取平衡可用下式表示: Ln^(3+)+3(HA)_o=(LnA_3)_o+3H^+ 实验测定了在四种不同溶剂(CCl_4,苯,甲苯和二甲苯)中,有机相萃合... 详细信息

本文用斜率法研究了1-苯基-3-甲基-4-苯甲酰基吡唑酮-5(HPMBP,HA)从硝酸介质中对铒(Ⅲ)或铥(Ⅲ)萃取的溶剂效应.萃取平衡可用下式表示: Ln^(3+)+3(HA)_o=(LnA_3)_o+3H^+ 实验测定了在四种不同溶剂(CCl_4,苯,甲苯和二甲苯)中,有机相萃合物的生成常数logβ°_(300)。并以Hildebrand正规溶液理论为基础导出求logβ°_(300)的半经验公式: 对ErA_3:logβ°_(300)=log(1000d/M)-0.47(10.05-δ_o)~2.17.54 对TmA_3:logβ°_(300)=log(1000d/M)-0.47(10.37-δ_o)~2.18.2. 式中d,M和δ。分别表示有机溶剂的密度,摩尔质量及溶解度参数,由半经验公式计算出的logβ°_(300)理论值与实验值基本符合。

关键词：铒铥萃取溶剂效应吡唑酮

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CVD金刚石膜的结构分析

物理学报 2003年第6期52卷 1479-1483页

作者：刘存业刘畅西南师范大学物理学系重庆400715 拉特格斯大学物理与天文学系美国新泽西08854

利用x射线广角衍射和低角掠入射散射谱、正电子湮没谱、定性分析软件和Positronfit程序 ,研究了生长在Si( 10 0 )基底上的金刚石膜微结构 .研究发现 ,在样品邻近基底区域为纳米多晶结构 ,具有弱的 [111]织构 ;在邻近表面区域为微米多晶... 详细信息

利用x射线广角衍射和低角掠入射散射谱、正电子湮没谱、定性分析软件和Positronfit程序 ,研究了生长在Si( 10 0 )基底上的金刚石膜微结构 .研究发现 ,在样品邻近基底区域为纳米多晶结构 ,具有弱的 [111]织构 ;在邻近表面区域为微米多晶结构 ,具有强的 [2.2.0 ]织构 .金刚石膜样品有空位、空位团和空洞 3种缺陷 ,其中主要缺陷是大约

关键词： CVD 金刚石膜结构分析化学气相沉积正电子湮没谱 x射线广角衍射低角掠入射散微结构缺陷

The Influence of Mold Pressing Parameters on PTC of HDPE/CB Composites

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Journal of Wuhan university of Technology(Materials Science) 2005年第1期20卷 49-51,59页

作者：易回阳 State Key Laboratory of Mold Technology Huazhong University of Science and Te chnologyWuhan 430074China College of Chemistry and Enviorment Engineering Hubei Normal UniversityHuangs hi 435002China

The influence of mold pressing parameters on the positive temperature coefficien t of high-density polyethylene/carbon black composites was investigated. The co mposites with a low resistivity at room temperature and a high positive temperat ure coefficient can be obtainee with the mold pressing parameters as follows: mo ld pressing pressure 6-14MPa, mold pressing temperature 150-170℃, mold pressi ng time about 15min, and room temperature of molded specimen after cooling for 2.0-60 minutes. The positive temperature coefficient effect of the composite is 7 .7 when it is prepared under the mold pressing parameters, and the negative temp erature coefficient effect is less than 0.8. Scanning electron microscopy (SEM) reveals some aggregations of carbon black particles with a size of 1μm inside t he composite, which was obtained at the mold pressing temperature of 180℃.

关键词： composites PTC molding

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投射Schur模与合成因子

数学学报（中文版） 1994年第5期37卷 607-610页

作者：黄冬苹湖南师范大学数学系

本文用不可分解投射Ｓｃｈｕｒ模研究并刻划了有限型自入射代数的不可分解模由合成因子决定的条件。

关键词： Schur模合成因子不可分解模

On the Auslander-Reiten Quiver with OrientedCyclesof Representation-finite Algebras

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Chinese Quarterly Journal of mathematics 1998年第3期13卷 43-47,页

作者： Yao Hailou (department of mathematics,Beijing Polytechnic {2.,Beijing,10002.)

Let A be a basic,connected finite dimensional algebra over an algebraically closed field with finite representation type, α(A) be the maximum of set consisting of numbers of indecomposable summands in the middle term of Auslander Reiten sequences in mod A. In this paper we show that if α(A)=1, then Γ A contains oriented cycles if and only if Γ A contains DT r periodic modules. When α(A)2.we give counterexamples to the assertion.

关键词： Auslander Reiten quiver Auslander Reiten sequences oriented cycles DT r periodic molules

STRONG CONVERSE INEQUALITY FOR SZASZ-DURRMEYER OPERATORS

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Applied mathematics(A Journal of Chinese Universities) 1996年第3期11卷 361-368页

作者： LI SONG(department of Applied mathematics,Zhejiang {2., Hangzhou 31002..)

For Szasz-Durrmeyer operators L.(f,x),10,is Ditzian-Totik modulus of smoothness.

For Szasz-Durrmeyer operators L.(f,x),12.x,M>0,is Ditzian-Totik modulus of smoothness.

关键词： Szasz-Durrmeyer operators,strong converse inequality Ditzian-Totik modulus of smoothness.

Application of polynomial chaos on numerical simulation of stochastic cavity flow

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Science china(Technological Sciences) 2010年第10期53卷 2853-2861页

作者： WANG XiaoDong1,2.& KANG Shun1 1 Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, Ministry of Education, School of Energy Power and Mechanical Engineering, North china Electric Power university, Beijing 102.06, china 2.department of Mechanical Engineering, Vrije Universiteit Brussel, Brussels 1050, Belgium 1. Key Laboratory of Condition Monitoring and Control for Power Plant Equipment Ministry of Education School of Energy Power and Mechanical Engineering North China Electric Power University Beijing 102206 China2. Department of Mechanical Engineering Vrije Universiteit Brussel Brussels 1050 Belgium

In present paper,the mathematic background of intrusive polynomial chaos (IPC) method and coupling process with one dimension Euler equation were introduced. The IPC method was implemented for the 2. compressible stochastic Navier-Stokes equations to simulate the non-deterministic behavior of a lid driven cavity flow under the influence of uncertainties. The driven velocity and fluid viscosity were supposed respectively to be the uncertain variable which has Gaussian probability distribution. Based on the validation with benchmark results,discussions were mainly focused on the statistic properties of velocity distribution. The results indicated the effect of IPC method on the simulation of propagation of uncertainty in the flow field. For the simulated results of 2. cavity flow,influence of the driven velocity uncertainty is larger than that of viscosity.

关键词： non-deterministic polynomial chaos numerical simulation lid driven cavity flow