谐波齿轮传动CAD系统研究

介绍了谐波齿轮传动CAD系统。采用专家系统的思想，在AutoCAD平台上使用ARX及面向对象技术，开发出谐波齿轮传动CAD系统功能模块。该系统具有对设计参数进行优化设计和有限元分析的功能。将设计计算与绘图集于一体，实现参数化设计，用户界面方便，友好。     

软件重用在故障诊断专家系统设计中的应用

简述了故障诊断专家系统的概念，介绍了在开发与设计过程中所用到的软件重用技术、面向对象方法以及领域与领域工程的方法，通过对故障诊断专家系统进行领域分析，同时应用面向对象的方法，设计出了故障诊断专家系统的可重用构架和可重用构年，并将其构造到一个实用的系统中，作为结论，软件重用技术在实际应用中切实可行，并且可以大幅度提高系统的设计与开发效率。     

面向对象的设计类专家系统建模方法研究

从面向对象的设计方法出发，对把该方法应用于设计类专家系统进行了研究。提出了此类专家系统建模的三步曲，并将该方法应用于面向对象的压铸模设计专家系统中。     

煤矿巷道支护智能决策系统

在总结以往施工知识的基础上，采用面向对象的计算机编程技术和可视化的设计方法，利用人工智能等科学开发了井巷支护设计的智能专家系统，其中包括决策系统的总体设计思路、知识库的建立、推理机制的调试等，并将神经网络技术应用到专家系统中。将该系统应用于某巷道支护设计方案的决策，其运行结果比较令人满意。     

面向对象知识表示在专家系统开发工具中的应用

介绍面向对象知识表示在专家系统开发工具中的应用,按照面向对象的形式定义,结合专家系统的具体特征,设计适用于专家系统开发工具的知识表示语言,利用面向对象技术的封装性、继承性等特点,使系统的代码重用、消息传递、图形化界面的实现取得了较好效果,增强了专家系统开发工具的结构化知识表示能力,有利于开发大型专家系统,面向对象方法与知识表示的结合,拓展了系统的知识表示能力,提高了专家系统开发工具的实用性。     

面向对象的生产作业计划专家模拟系统的研究

集成专家系统、模拟技术、面向对象方法和优化技术，研究与开发了面向对象的生产作业计划专家模拟系统的原型，阐述了该系统的构成和功能；深入讨论了生产作业计划编制专家子系统和面向对象的生产作业诸模拟子系统的工作机理。     

面向对象的生产作业计划专家模拟系统的研究

集成专家系统、模拟技术、面向对象方法和优化技术，研究与开发了面向对象的生产作业计划专家模拟系统的原型。阐述了该系统的构成和功能；深入讨论了生产作业计划编制专家子系统和面向对象的生产作业诸模拟子系统的工作机理。     

CLIPS中的面向对象程序设计

面向对象作为一种新的程序设计技术也影响着专家系统的研制开发，本文讨论了面向对象技术与专家系统的联系和特点，描述了专家系统工具ＣＬＩＰＳ中的面向对象程序设计技术。     

基于面向对象的专家系统设计方法研究

首先介绍了面向对象的思想,分析了专家系统的特征,在此基础上指出了面向对象技术用于建造专家系统的适宜性;然后给出了面向对象知识表示的一般方法,并阐述了基于面向对象技术的专家系统中的３种推理方法;最后给出了１个应用实例     

面向对象专家系统的一种实现框架的探讨

面向对象的专家系统能很好模仿人类习惯的思维方式,它将属性、方法封装于对象中,在处理复杂问题方面具有强的能力。本文对应用面向对象技术的专家系统的原理及其一种实现框架进行了探讨。     

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.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

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.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

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-