网络管理中CORBA Web Services数据转换的研究

网络管理中CORBA／Web Services数据转换的关键是要实现IDL／WSDL数据映射,并且完成IDL／WSDL翻译器的设计。根据数据转换的具体要求,对CORBA／IDL与Web Services／WSDL的数据交互进行了研究。详细描述了CORBA／IDL和Web Services／WSDL之间基本数据类型的映射、接口和方法的映射等,提出了CORBA／Web Services数据交互模型,给出了翻译器的示例代码和CORBA／Web Services协议适配器的结构。成功的解决了网络管理中CORBA／Web Services数据转换的问题。     

基于Web Services的在线投稿系统的研究与实现

从分布式多层应用系统的设计入手,分析研究了Web Services 原理和XML、SOAP、WSDL、ADO.NET等关键技术,从服务器和客户端两方面考虑,设计了在线投稿系统.本系统结构分为数据层、中间层和客户层3层.中间层利用ADO.NET数据访问技术设计实现了Web Services应用层服务器.Web Services的应用解决了系统集成受地域和操作平台限制的问题,提高了系统的模块化和可扩展性.     

基于Web Services的企业电子商务应用集成技术的设计与实现

在分析Web Services的体系结构和关键技术的基础上,采用基于J2EE的Web Services技术,结合标准的Web协议(HTTP、SMTP等)和XML、SOAP、WSDL、VDDI等一系列标准,给出一个企业电子商务应用集成技术的设计与实现.     

基于Java IDL 的分布式程序设计

Java2中引入Java IDL,将IDL根据CORBA规范的要求，映射到Java语言并以此开发出标准的具有互操作性和可连接性的分布式应用。     

CORBA中POA-Tie模式的JAVA实现

介绍了CORBA分布式组件技术的体系结构,指出它至少支持两种不同的实现IDL界面的服务器端映射：一种是继承模型;另一种是代理模型.介绍了可移植性对象适配器的概念及特性,并阐述了CORBA中POA-Tie模式的JAVA实现.     

CORBA与Web Services的交互方法

企业信息化建设过程中构建了大量的CORBA应用.目前的B2B服务集成是在Internet上平台独立、松散耦合的集成.CORBA的特性决定了它不能满足这种需求,而Web Services基于一系列标准开放的技术规范和协议可以满足B2B集成的需求.但基于IIOP的通信却比依赖SOAP的通信有效得多.提出了一种CORBA应用与Web Services交互的方法以便高效实施B2B集成,这样既保护企业原来的投资又保证B2B集成新系统高效运行.     

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