插齿刀CAD／CAPP系统开发

提供了一种在微型计算机上实现对插齿刀的设计计算、设计图纸的自动绘制及工艺规程自夸编制的方法,开发了插齿刀ＣＡＤ／ＣＡＰＰ软件包,从而实现了插齿刀ＣＡＤ／ＣＡＰＰ的一体化,提高了设计和生产效率。     

渐开线型插齿刀CAD／CAM几何模型的新探讨

本文针对渐开线型插齿刀设计的传统方案近似性，提出了一种新的设计方案，并推导了相应的ＣＡＤ／ＣＡＭ几何模型，再结合实例表证了新方案的可行性和本文模型的可靠性。     

用指形砂轮磨制渐进线型螺旋插齿刀CAD/CAM几何模型研究

在文「１」中提出的无设计误差的渐开线型螺旋插齿刀设计模型的基础上，提出用指形砂轮磨制相应插齿刀的制造模型，结合具体算例验证了模型的可靠性。     

关于三角花键轴螺旋插齿刀CAD/CAM数学模型的研究

给出了一种三角花键轴螺旋插齿刀的最新设计方法，使本设计方案中不存在设计误差，同时给出了相应的CAD／CAM几何模型，最后结合具体算例验证了方法及模型的可靠性．     

关于螺旋插齿刀CAD／CAM几何模型研究

针对目前螺旋插齿刀设计中存在的问题、提出设计此类刀具的一种无设计误差的新方法，给出了相应的设计与制造的几何模型，最后结合具体算例，验证了本模型的可靠性，因此，本文对提高目前刀具制造精度和产品的加工质量具有一定的实际意义。     

磨削高精度螺旋插齿刀的通用数学模型研究

给出用指形砂轮磨制螺旋插齿刀的通用CAD/CAM数学模型 ,并结合具体算例验证了方法及模型的可靠性     

自适应遗传算法优化模型小脑模型

首次采用遗传算法（ＧＡ）设计模糊小脑模型神经网络的隶属函数，提出一个自适应ＧＡ优化算法，并且以优化模型小脑模型ＦｕｚｚｙＣＭＡＣ学习正弦曲线，仿真实例表明，采用自适应ＧＡ方法优化的ＦｕｚｚｙＣＭＡＣ学习精度比标准小脑模型ＣＭＡＣ提高大约三个数量级，比标准ＦｕｚｚｙＣＭＡＣ（三角形隶属函数）提高一个数量级，自适应ＧＡ方法优化的ＦｕｚｚｙＣＭＡＣ学习速度比ＧＡ优化的速度快且乾化过程的振荡明显减小，仿真     

CAI课件的教学设计

以认知学习理论为基础，结合ＣＡＩ的特点，提出了一ＣＡＩ课件的教学设计模型，该模型描述了在ＣＡＩ课件设计中的目标分析，内容分析和课程组织，最后对ＣＡＩ课件教学设计的做了简要介绍。     

非标准复合齿轮插齿刀设计方法

研究加工不等齿厚的非标准参数渐开线齿形,与非渐开线齿形复合的锁闭齿轮插齿刀刀齿的排列、刀具齿数的选择以及刀具设计的基本方法,介绍用限制区域选择插齿刀变位系数的新方法,并给出刀具齿顶后角与侧螺旋角的关系曲线,为插齿刀参数的选择提供依据,结果表明,采用上述方法设计非标准复合齿轮插齿刀,可简化计算和提高设计效率。     

一种CAI学习模型及其超文本课件

在讨论了ＣＡＩ学习理论的基础上，给出了一个ＣＡＩ认知学习模型，详细介绍了为实现模型而设计的一种超文本课件的组织。此模型的ＣＡＩ系统可以为教师一个方便的教学设计环境，有助于解决现有ＣＡＩ软件教学设计不足的问题。     

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.     

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     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

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     

Journal of Donghua University ( English Edition) Contents of Volume 31

正~~