支持成员动态重用的HLA/RTI扩展

该文分析了当前HLA成员重用性低的原因,研究了支持成员重用的RTI扩展框架。该扩展框架在HLA/RTI标准框架上,增加一个自适应的中间映射层,可实现不同重用场景下成员固化SOM到联邦FOM间的映射与管理。中间映射层的关键是映射模型构建,该文建立了消息映射算子元模型,实现了映射模型的动态构建,基于自适应中间映射层的RTI扩展框架可有效提高成员重用性,成员在不做改动的情况下,能正确加入到新联邦中运行。实验结果表明了本扩展框架的可行性和有效性。     

形式化智能环境下的物理世界建模过程

针对普适计算带来的智能物理世界构成实体的属性和行为特征, 将知识重构与抽象模型(KRA模型)框架的感知过程扩展为初步感知和感知重构两步, 使其能表示并区分所提出的智能环境下物理世界的不同属性域实体, 得到智能环境下物理世界的层次模型. 该模型统一定义物理实体, 逻辑表示网络化实体, 避免了重复感知. 网络
化实体间及物理实体和虚拟实体与网络化实体间的关系定义为逻辑连接关系, 同时, 可以将对以整个世界为推理空间的推理过程分解为在物理实体及连接构成的空间和在虚拟实体及连接构成的空间上更小规模的推理过程, 降低了推理的复杂性.     

MIS开发中元构件可重用性的研究与设计

通过对业务构件库中相似业务构件的共性部分和差异部分的分析和抽象,提出了一种可重用业务构件模型--元构件.利用设计模式和UML元元模型的扩展,给出了元构件的定义和语法描述,并对其参数进行了详细设计.最后,以一元构件为例证明了该方法的可行性.说明通过设计元构件的编译参数和运行参数可以提高业务构件的可重用性.     

复合材料层合板双面贴补结构渐进损伤分析

提出了一种分析和预测在拉伸载荷作用下复合材料层合板双面贴补结构的极限承载能力的方法,建立了分析复合材料双面贴补结构渐进损伤的三维有限元模型.胶层用各向同性模型描述,提出了基于3个方向剪切应变描述的二次剪切失效判据来预测胶层的损伤起始,定义了与材料应力应变相关的刚度折减函数来模拟损伤后胶层刚度的连续退化.层合板用正交各向异性三维模型描述,采用基于应变描述的三维Hashin准则和Ye分层准则来预测其损伤起始,引入损伤变量来考虑层合板的损伤扩展.计算结果与试验数据吻合较好,说明该方法和模型可以有效地预测复合材料双面贴补结构的拉伸极限强度.     

软件过程领域本体的构造

针对目前软件过程领域知识缺乏明确统一的表示、不同组织构造的过程模型缺少互操作性而难以共享和重用的情况,划分并描述了软件过程的顶层本体;在此基础上,对其中包含的任务描述、过程模型和过程实施与改进三个核心本体分别进行了展开和细化,给出了涉及到的关键概念的形式化定义.传统的本体系统并不适宜描述动态过程,因此使用谓词逻辑定义了过程本体中概念间的基本关系,以此来表示和描述软件过程模型的“柔性”和动态知识,使不同的参与者易于交流而达成共识,为构造可共享、易重用的过程模型元模型提供坚实、统一的基础.     

复杂宽边界区域拓扑关系计算模型

宽边界区域是一种通用的处理各种不确定性的模型,在地理信息领域得到了广泛应用.扩展九交模型用宽边界区域的内部、宽边界和外部所形成的9个交来区分宽边界区域的拓扑关系.由于扩展九交模型只是一个概念模型,从概念上对宽边界区域拓扑关系进行查询语句定义和分析,而在计算机处理中需要一个可计算的模型.对于简单宽边界区域,其计算方法比较简单;而对于复杂宽边界区域,由于其结构的复杂性,必须有一个可计算的模型以实现拓扑关系计算、查询和分析处理.在分析复杂宽边界区域结构的基础上,定义了复杂宽边界区域的层次模型,并基于层次模型提出了复杂宽边界区域拓扑关系的计算模型.     

支持软件设计与开发的数据库系统

本文给出了一个支持软件设计与开发环境的数据库系统CADD-DMS。该系统提出了一个新的数据模型——分层关系模型;运用了扩展的关系数据库管理系统;为各种不同用户和软件设计与开发的各细节层提供了强有力的图形工具与灵活多样的表示,提出支持结构的软件设计方法。     

图文菜单自动生成系统

本文讨论了在GTMS图文菜单规范基础上设计并实现的生成系统的系统模型和各个子系统的功能;描述了目标系统的环境,着重论述了在目标系统中引入菜单卡的优越性;介绍了屏幕定义子系统实现的自扩展方法。该生成系统为开发用户界面提供了一有用的工具。     

基于本体的工作流抽象模型

基于本体的抽象模型框架, 提出一种工作流的感知建模方法, 通过感知特定领域中实际运行的具体工作流获得构建该领域工作流抽象模型的知识, 既可为工作流模型的设计提供共享和重用机制, 也可直接构造该领域的工作流抽象模性, 实现工作流的部分或全部自动化运行. 并给出了工作流行为本体类和行为关系本体类的定义,  形式化地描述了两个本体类的动态构建和扩展过程, 同时给出了在基于本体抽象模型框架下的工作流抽象建模过程.     

多重分层抽象模型

基于G-KRA模型框架, 对已有的流片段概念进行扩展,  提出3种不同类型的流片段组, 并引入现象和目的的概念, 定义了流片段（组）的现象不可区分性. 根据流片段（组）的现象不可区分性合并流感知过程获得的某些流片段, 建立了流片段集合与现象集合间及现象集合与目的集合间的映射关系, 并形式化地描述了基于多重知识流片段集合的分层过程, 为客观世界基于多重知识的分层抽象过程提供了可共享和重用的知识库及转换机制.     

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.     

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     

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