可复用软件构件技术

随着软件复用、软件构件技术和ＯＯ 技术的发展,基于可复用构件的软件开发成为现实。实践证明,通过开发可复用软件的两个生命周期：开发可复用软件构件和基于可复用构件的软件开发,软件复用技术可以极大地提高软件开发效率和质量。简述了软件复用技术、软件构件技术、基于可复用构件的软件开发以及构件对象模型（ＣＯＭ） 。     

基于软构件的CAI系统的设计

在分析传统的开发CAI系统方法缺点的基础上,研究了如何利用软构件技术来开发CAI系统,提出了基于软构件技术的CAI系统开发方法.结果表明,基于软构件技术的CAI系统开发方法可以最大限度地提高软件的复用性,从而提高后继CAI系统开发的效率.     

软件复用技术在基于B/S模式的新闻管理系统中的应用研究

软件复用是在软件开发中避免重复劳动的解决方案.通过软件复用,可以提高软件开发的效率和质量。当前软件构件技术被视为实现成功复用的关键因素之一,本文介绍软件复用的基本概念及关键技术,并结合实际开发中的经验,对基于B/S模式新闻管理系统开发中的软件复用进行了一定的研究。     

软件复用技术在基于B/S模式的新闻管理系统中的应用研究

软件复用是在软件开发中避免重复劳动的解决方案.通过软件复用,可以提高软件开发的效率和质量。当前软件构件技术被视为实现成功复用的关键因素之一,本文介绍软件复用的基本概念及关键技术,并结合实际开发中的经验,对基于B/S模式新闻管理系统开发中的软件复用进行了一定的研究。     

基于构件的软件复用技术

软件复用是提高软件开发效率和质量的有效途径,构件技术是支持软件复用的核心技术,是近几年来迅速发展并受到高度重视的一个学科分之。本文分析软件构件技术及其几个不同层次的软件复用技术构件模型,探讨了实现复用的机制。并对三者的关系和区别进行分析与比较。     

EJB构件技术在学生选课管理中的应用

软件复用是利用现有的软件成分来构造新的软件系统的过程,构件技术是实现软件复用的核心技术.介绍了EJB构件技术,阐述了选课构件的设计过程,最后给出了第一次选课的构件实现.     

基于构件的软件复用技术应用研究

基于构件的软件开发技术是一种在软件开发中避免重复劳动的解决方案,当前软件构件技术被视为实现成功复用的关键因素之一,本文介绍软件复用的基本概念及关键技术,最后,就基于构件软件开发技术在管理信息系统中的应用作了探讨,给出了相应的开发模型及具体事例.     

构件化软件及中间件的研究

随着构件复用研究的深入和中间件应用领域的扩大,构件技术及中间件成为目前研究的热点。本文分析构件化软件及中间件的本质,探讨了构件与中间件之间的联系,为构件化软件指导中间件开发提供一条可行途径。     

基于可复用构件的软件开发方法

软件复用是指在开发新的软件系统时,对已有软件的重新使用,该软件可能是已存在的软件,也可能是专门设计的可复用构件.基于构件的软件开发是指利用已开发完成的商业构件(或可复用的构件),按应用需求组装形成软件应用系统的开发方法.基于软件构件的软件复用技术是实现软件工业化生产的技术基础,是解决"软件危机"的重要途径.在对软件构件及其相关技术进行研究的基础上,将软件构件技术应用于教务管理系统的开发实践中,给出了该开发方法的具体应用.     

信息系统组态平台及其构件复用技术

在讨论软件构件技术的基础上,借鉴工业控制自动化领域的组态思想,提出了支持构件复用的信息系统组态平台及其组态开发模式．它面向需求动态变化的最终用户,以组态方式通过可复用构件的动态组合实现应用系统,从而提高应用软件系统的开发速度和效率及其可维护性、可重构性和可扩展性．     

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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