基于移动Agent和Web Service的动态工作流互操作模型

工作流产品之间的协作成为企业间有效合作的瓶颈．虽然大多数厂商之间已解决了一些工作流互操作问题，但往往是静态的，为了提高工作流互操作的灵活性，需要各工作流系统支持动态工作流互操作．在此分析了动态工作流互操作中存在的问题，归纳了实现动态工作流互操作需要解决的问题，然后提出了一个基于移动Agent和Web Senrice的动态工作流互操作模型，给出动态工作流互操作相关的实现描述，最后结合一个具体实例通过数据验证此模型的优越性．     

一个基于案例的动态工作流模型

提出了一个基于案例的模型,实现工作流系统的执行动态性和自适应性,工作流接口、定义和案例3个概念的分离实现了动态性,工作流目标以及工作流过程的邦定成为一个动态的可随时调整的过程,采用了基于案例推理的方法,有效地利用工作流系统的日志,在工作流执行过程中根据环境和工作流日志,不断地作出优化调整,实现自适应性。     

基于角色的动态工作流模型的研究

针对电子政务系统的实际需求和传统工作流技术的局限性，对工作流管理模型进行了扩充．提出了一个基于角色的动态工作流设计模型．     

工作流系统在医药MIS系统中的应用研究

阐述了工作流系统的基本概念,介绍了基于XML的流程设计和工作流引擎的设计,使企业可以根据业务流程动态构建企业信息系统.     

基于B/S的工艺工作流管理的研究

根据工作流管理联盟(WFMC)的工作流参考模型，结合Web技术，提出了基于B／S工艺工作流管理，阐述了基于B／S的工作流管理原理和工艺工作流管理，并在CAPP系统中实现了工作流管理功能。     

基于移动代理平台Aglet的柔性工作流的研究与实现

分析了柔性工作流管理系统的特点以及可移动Agent技术，提出了一种基于移动代理平台的柔性工作流管理系统的体系结构，并采用Aglet平台实现了原型系统．在原型系统中，业务过程的定义封装在可移动的工作流引擎Agent中，MA(Mobile Agent)迁移到各执行任务的角色所在节点，驱动并监控任务的执行；利用多个Agent之间位置透明的通信、协同工作，使得业务过程的定义在执行中可动态修改，实现了工作流的柔性．     

办公自动化系统中工作流配置软件的设计与实现

办公自动化系统的核心是工作流的定义与配置，分析研究了工作流系统，提出了图形化工作流配置软件的设计思想，并实现了一种基于Lotus Notes/Domino群件体系结构的图形化流程配置软件。     

基于工作流机制的办公系统设计

工作流技术是计算机支持的协同工作领域的一个新的研究热点。工作流管理系统是实现网上办公自动化的有力软件工具。分析了当前基于Web技术的工作流管理系统的研发状况，介绍了工作流联盟定义的工作流参考模型及工作流参考模型的接口，并针对基于web环境下的办公自动化系统的要求，提出了将工作流机制与web技术相结合应用到办公自动化管理系统中的思想，描述了工作流管理系统的层次结构和具体实现算法。     

工作流动态变化问题的解决方法

从工作流动态变化问题出发分析了当前工作流软件的弊端，提出了一种通过计算变化区域来支持工作流动态变化的方法，并且结合实例，即开发的一个办公自动化系统中工作流发文管理部分对这种方法进行了说明，结果表明，这种方法可以很好地解决工作流动态问题。     

基于角色的动态工作流模型的研究

针对电子政务系统的实际需求和传统工作流技术的局限性,对工作流管理模型进行了扩充,提出了一个基于角色的动态工作流设计模型.     

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