构件技术发展综述

从对构件的认知以及构件技术所研究的内容入手,对构件技术的产生、演化进行分析;对构件技术主要研究领域所取得的成果进行总结,指出构件技术缺乏必要的灵活性和适应性,需要融合其他相关技术优势,以便更好地适应软件开发的需求．     

构件技术的发展与展望

本文首先介绍并比较了几种主流的构件技术,包括CORBA,COM/DCOM,J2EE三种著名的构件技术。接下来对构件库技术进行了介绍,对基于构件的软件开发方法（CBSE/CBD）进行了阐述。最后对构件技术的未来的发展进行了展望。     

一种基于构件技术和数据库的专家系统框架

在综合分析了目前开发专家系统常用的几种技术和用构件技术开发软件系统的特点的基础上，提出了一个以构件技术和数据库技术相结合的构建专家系统的解决方案．该方案将知识以关系数据库的形式表示，采用专家系统的推理机方法实现对结果分析，给出了用构件技术构建基于数据库的专家系统的框架，使专家系统的构建变得方便快捷和更切合需要．最后给出了一个检测分析专家系统的实例．     

计算机操作系统构件化方法研究

构件技术是目前软件开发中被广泛推广和使用的技术，各种采用CBD（Component—Based Development）思想开发而成的软件产品比比皆是，可以说构件技术将软件开发推向了一个新的发展高潮。     

未来变体无人飞行器的关键技术

未来无人飞行器的任务将要求飞机外形和功能上发生变化，同时也就需要新构件技术从发动机到机翼结构、智能材料以及拓展分析技术。本文对生物灵感、智能材料等关键技术进行了分析探讨，对这些技术的优势和劣势进行了简要说明。     

软件复用与构件技术

本文讨论了软件复用的历程以及构件技术的兴起,分析了基于构件开发和面向对象开发在软件复用上的区别;分析了构件技术在多层软件结构和Web上的应用;对构件技术进行了总结和展望.     

基于UML的软件构件技术

基于构件的软件开发已经得到广泛的认可和应用，结合UML建模技术在软件构件技术中应用，提出了一种基于构件的软件开发方法，对UML在软件构件开发中的应用进行了深入的探讨．它使得基于构件的软件开发的每个阶段任务明确，易于理解．     

基于构件的软件开发技术和方法

软件构件技术是实现软件复用的关键问题,是当前软件界研究的热点。文章通过对构件及构件技术的阐述,探讨了基于构件的软件开发技术、方法以及构件设计评价标准。     

一种基于B方法和构件技术的形式化开发方法

构件技术和形式化方法是解决软件危机和提高软件开发效率问题的关键。在分析了构件技术、B方法、XML和XSLT后,本文提出了一种基于B方法和构件技术进行形式化开发的方法,并示例说明。     

一种基于B方法和构件技术的形式化开发方法

构件技术和形式化方法是解决软件危机和提高软件开发效率问题的关键。在分析了构件技术、B方法、XML和XSLT后,本文提出了一种基于B方法和构件技术进行形式化开发的方法,并示例说明。     

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.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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