设计质量评价问题初探

产品设计质量很大程度上决定了产品的设计水平,将影响产品的各个环节。探讨了设计质量评价问题,介绍了设计质量的概念,分别从产品和设计过程出发,明确了设计质量的评价方法和设计指标,对设计质量评价过程进行了描述。     

工业造型设计中的计算机辅助设计

随着工业造型设计在工业产品设计中的广泛应用,提出了采用计算机三维动画制作系统3D STUDIO和其他的图像处理系统结合,进行产品的工业造型设计,并研究和解决了其中的关键技术问题,如形态设计、色彩设计、宜人性设计及效果图设计等,缩短了工业造型设计的周期,降低了设计成本,使造型设计更加方便。     

某型C波段接收模块的研制

本文详细讨论了某型C波段接收模块的原理和设计,根据某型接收系统的总体指标,应用模块化设计思想,确定了C波段接收模块的设计指标并进行设计。在设计中,采用了微波电路计算机辅助设计(CAD)软件对部分电路进行了设计、优化和仿真,提高了设计效率和产品可靠性。     

抽油机减速器轴和轴承的计算机辅助设计

在设计抽油机减速器的轴和轴承时,设计人员一直采用手工设计方法。用这种传统的方法设计出的结构缺乏一定的协调性和灵活性,设计计算繁冗,并难以获得最佳设计方案。本文用计算机辅助设计(CAD)技术,编制出了软件系统,使轴和轴承的设计计算整体化,克服了传统设计方法的缺点,提高了设计质量,并由于简化设计过程而大大节省了工作量。     

基础隔震结构基于位移的设计方法

介绍了直接基于位移的设计方法，并将其引入到基础隔震结构的设计中，提出了隔震结构基于位移设计的位移指标和设计准则，建立了设计位移反应谱，给出了设计步骤和实例。结果表明，隔震结构采用基于位移的设计方法是安全可靠的。     

浅谈CAI课件设计

本文叙述了课件及课件设计的概念,阐述了课件设计的理论基础和设计原则,探讨了课件的教学设计和软件设计,对提高教学效益和教学手段进行了有益的探索。     

设计的人性化

从设计的人性化的出现、表达方式、思考和注意事项等方面, 对设计的人性化进行分析和讨论.通过系统理论阐述和设计范例讲解, 详细论述了人性化设计的特点和要求;论证了人性化设计是当今和未来的设计所要遵循的发展方向;强调了设计的人性化是设计者永恒追求的目标.     

望大望小特性设计目标的模糊稳健优化设计方法

根据稳健设计和模糊设计原理，提出了具有模糊信息时的望大望小特性设计目标的模糊稳健设计准则，对其数学特性和适用条件进行了分析，提出了模糊稳健优化设计的数学建模方法，对建模中要解决的关键问题进行了研究，并且给出了具体解决方法，理论分析和设计实例表明，该方法既能保证设计目标和约束条件的稳健性，又能处理设计问题中的模糊因素，是传统稳健设计方法的发展和完善，具有工程实用价值。     

浅析限额设计对工程造价的控制

浅析了限额设计的含义和意义,对如何开展限额设计和完善设计体制提出了合理化建议,并指出限额设计必须贯穿于设计的各个环节。     

协同设计网格及其关键技术

针对协同设计中的资源共享和协同工作问题,通过分析产品设计和仿真过程对协同设计网格的功能需求提出了协同设计网格的概念．基于网格中间件建立了协同设计网格的4层体系结构,利用Globus工具集实现了协同设计网格服务,并基于web开发协同设计网格的门户来封装网格服务．该技术为分布在异地的设计人员提供了高级的网格服务和友好的图形化界面,从而最大程度地实现资料共享和协同工作．为远程协同设计的实施提供了新思路和新方法．     

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     

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

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Brief Introduction to “Journal of Jilin University( Science Edition) ”

<正>"Journal of Jilin University(Science Edition)"is a comprehensive academic journal in the fields of science sponsored by Jilin University and administrated by the Ministry of Education of the Peoples Republic of China.The journal started publication in 1955.The original name at starting publication was"Journal of Natural Science of Northeast People University",which was changed into"Acta Scientiarum Naturalium Universitatis Jilinensis"in 1958 owing to the name change of the university.The present journal name has