CIMS／EDBMS：面向对象的工程数据库管理系统

本文叙述了一个面向ＣＩＭＳ的工程数据管理系统ＣＩＭＳ／ＥＤＢＭＳ。该系统引入了面向对象的概念和方法，以关系数据库管理系统ＯＲＡＣＬＥ为基础，并与图形软件ＧＫＳ集成，使它具有支持抽象数据类型，类层次和继承性、复杂对象管理、图形和非图形数据统一操作、版本管理、长事务处理和多种用户接口、文中着重叙述了面向对象的工程数据模型ＯＥＤＭ，系统的体系结构及主要功能模块和ＯＳＱＬ语言。     

一种扩充的面向对象 Petri 网

在面向对象的Ｐｅｔｒｉ网基础上，引入依赖消息，提出了一种扩充的面向对象Ｐｅｔｒｉ网（ＥＯＰＮ）模型，并以企业中的一项生产活动——ＰＣＢ元件贴装为实例，建立了描述这一活动系统的完整的ＥＯＰＮ模型，据此实现了物料分配的优化调度，构成了ＣＡＤ／ＣＡＭ集成系统中重要的一环     

用SQL实现对事务数据和工程数据的统一操作

为解决ＲＤＭＢＳＯＲＡＣＬＥ不能操作非结构化工数据的问题，实现ＣＩＭＳ环境下ＥＤＢＭＳＥＤＬ和ＯＲＡＣＬＥ之间的信息共享。本文提供了将异构数据库ＥＤＬ和Ｏ－ＲＡＣＬＥ集成的一种方法，用ＳＱＬ实现了对结构化事务数据和非结构化工程数据的统一操作。     

一种扩充的面向对象Petri网

在面向对象的Ｐｅｔｒｉ网基础上，引入依赖消息，提出了一种扩充的面向对象Ｐｅｔｒｉ网（ＥＯＰＮ）模型，并以企业中的一项生产活动－－ＰＣＢ元件贴装为实例，建立了描述这一活动系统的完整的ＥＯＰＮ模型，据此实现了物料分配的优化调度，构成了ＣＡＤ／ＣＡＭ集成系统中重要的一环。     

基于对象理论的工程图纸管理系统关键技术研究

工程图纸管理是ＣＡＤ／ＣＡＭ的重要组成部分 。在应用面向对象的基础上，了工程图纸管理的几个关键技术问题：机械产品图纸目录树的自动生成；ＡｕｔｏＣＡＤ内部多文档－视界面的实现；ＯＤＢＣ技术在工程图纸管理中的应用；零部件类在图纸管理中的应用，研究结果表明，基于面向对象论和技术的ＣＡＤ／ＣＡＭ，是ＣＡＤ／ＣＡＭ发展的一个极其重要的方向。     

注塑模CAD/CAE系统面向对象的设计

建立了基于ＯｐｅｎＧＬ的用户界面管理系统ＵＩＭＳ,ＵＩＭＳ提供了直接操作图形对象的语义反馈机制．阐述了ＵＩＭＳ中由对象操作集建立和编辑图形对象集的运作过程,以及图形对象集的组织形式——数据有向无环图的特点．以ＵＩＭＳ为基础,采用继承的构造方式建立了高级图形对象集和专业图形对象集及其相应的操作集,提供了高级用户交互的界面及高级Ｉ／Ｏ 接口．设计和实现了面向对象的有限元方法（ＯＯＦＥＭ）,介绍了在ＦＥＭ 领域中实施面向对象思想的策略．ＯＯＦＥＭ 计算结果的可视化由系统的ＵＩＭＳ和高级图形对象主题实现．集成了ＵＩＭＳ和ＯＯＦＥＭ 等五个主题,开发出应用于注塑模ＣＡＤ／ＣＡＥ的商品化软件包ＨＳＣ．     

MAGNETIC RELAXATION AT EARLY TIMES AND FLUX DIFFUSION BARRIER V（J，B，T） FOR Ti－1223 DOPED WITH Pb AND Ba BY COMPLEX AC SUSCEPTIBILITY MEASUREMENTS

ＭＡＧＮＥＴＩＣＲＥＬＡＸＡＴＩＯＮＡＴＥＡＲＬＹＴＩＭＥＳＡＮＤＦＬＵＸＤＩＦＦＵＳＩＯＮＢＡＲＲＩＥＲＶ（Ｊ，Ｂ，Ｔ）ＦＯＲＴｉ－１２２３ＤＯＰＥＤＷＩＴＨＰｂＡＮＤＢａＢＹＣＯＭＰＬＥＸＡＣＳＵＳＣＥＰＴＩＢＩＬＩＴＹＭＥＡＳＵＲＥＭＥＮＴＳＤ...     

基于CIMS信息集成的CAPP系统设计

阐述了ＣＡＰＰ在ＣＩＭＳ信息集成中的桥梁作用，介绍了一个采用快速原型法在ＰＯＷＥＲＢＵＩＬＤＥＲ面向对象的数据库开发环境中建立的实用的且覆盖面较宽的ＣＡＰＰ系统设计方案。     

多媒体信息和技术在数据库系统中的应用

讨论了多媒体数据库对信息处理的特殊技术要求；针对多媒体数据库提出了面向对象的数据库模型；介绍了Ｍｉｃｒｏｓｏｆｔ为开发多媒体数据库提供的对象连接与嵌人（ＯＬＥ），开放式数据库连接（ＯＤＢＣ），ＳＱＬＳＥＲＶＥＲ等一系列标准和技术．给出了在ＷｉｎｄｏｗｓＡＣＣＥＳＳ数据库中进行多媒体信息连接的一种新方法，并与ＯＬＥ技术就各自的效率进行了比较．     

浅论高校教师业务档案的建立与管理

浅论高校教师业务档案的建立与管理童晓风（浙江水产学院院长办公室，舟山３１６１０１）ＯＮＥＳＴＡＢＬＩＳＨＭＥＮＴＡＮＤＭＡＮＡＧＥＭＥＮＴＯＦＥＤＵＣＡＴＩＯＮＡＬＤＯＣＵＭＥＮＴＳＦＯＲＣＯＬＬＥＧＥＴＥＡＣＨＥＲＳＴｏｎｇＸｉａｏｆｅｎｇ（ＺｈＥ...     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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