超声CT法无损测温

本文研究了测温用的超声ＣＴ算法，分析了测量精度和时间，运用两种迭代法讨论了声波受到人体内骨骼、空气阻碍时，投影数据缺损情况下的超声ＣＴ重建算法。文中还进一步研究了超声衍射ＣＴ；在卷积－反传播法的基础上，提出一种新的投影数据缺损时超声衍射ＣＴ算法，并给出了计算机仿真的结果。     

环形移位悬浮存储器体系并行CT图象重建系统

针对三维计算机层面成象（ＣＴ）图象重建所必须的巨大运算量，提出了一种采用多处 理器并行处理技术实现三维ＣＴ高速图象重建的技术方案：“环形移位悬浮存储器”体系并行 结构，并分析了三维ＣＴ图象重建实现并行的原理，“环形移位悬浮存储器”并行处理系统的体 系结构，以及理论结果。     

CCT图的计算机辅助推定模型及程序系统

提出了计算机推定焊接ＣＣＴ图的原理及模型，深入分析了１３０多种钢材的焊接ＣＣＴ图形特征与化学成分的相关性，在建立钢材化学成分、ＣＣＴ图及临界点等数据库的基础上，利用多元统计回归技术求出了推定公式中的有关参数，进而开发了程序系统ＷＣＣＴ－ＣＡＤ，应用这一程序系统，实现了给定钢材化学成分并通过一定的人机对话，由计算机自动制定出焊接ＣＣＴ图组织转变曲线的设想。     

关于CIP3及CTP5的发展

随着ＤＴＰ系统和ＣＴＰ技术的发展,产生了以计算机直接制版和计算机直接无版印刷方式为基础的数字印刷,现代印刷高科技正推动着传统印刷业发生前所未有的变化。笔者阐述了现代印刷技术的发展,重点对ＣＩＰ３概念及计算机直接制技术（ＣＴＰ）进行了综述。     

一种新二维离散余弦变换快速算法

利用三角函数公式提出了一种将Ｎ×ＮＤＣＴ分解为Ｎ个１－ＤＤＣＴ的新的快速算法－ＤＤＣＴ算法，给出了８×８ＤＤＣＴ的算法流程图，并与其它２－ＤＤＣＴ快速算法在计算量及计算结构上进行了比较，计算机仿真结果表明，ＤＤＣＴ算法的计算精度明显高于行－列法。     

对高等学校非计算机专业中计算机教育的探索与实践

非计算机专业学生占全体大学生９５％以上，在这部分学生中进行计算机教育，开展计算机应用，是一项具有深远意义的任务。作者经十几年的探索与实践，总结出一套适合非计算机专业进行计算机教育的教学体系与方法；建立了一套适合于非计算机专业的教材体系，编写出版了一整套具有特色的教材；提出了“４个层次”的教育方案；深深感到；既要有雄心壮志，又要坚持结合国情，一切从实际出发。     

沿圆弧形路径积分的反射式超声层析成像方法及实验研究

讨论了近场及远场条件下沿圆弧积分的超声反射ＣＴ成像的重建算法,进行了计算机模拟成像,在此基础上,建立了一套超声反射ＣＴ成像系统,对部分样品模型进行了实验成像。     

广西高校计算机等级考试管理系统的开发与应用

采用面向对象的快速原型法和原型渐进法,使用ＰｏｗｅｒＢｕｉｌｄｅｒ６．０等快速生成原型的软件工具开发广西高校计算机等级考试管理系统（ＭＣＴ）。系统设计有良好的可扩展性和可维护性,采用开发的推广应用方式,建立ＭＣＴ网站供软件新版本下载,提供针对性的技术保障服务,ＭＣＴ系统已在广西４２所学校和厅高教处使用５年,使广西高校计算机等级考试考务管理全面实现计算机化,提高了考务管理工作的质量和效率。     

FACTS 技术计算机辅助工程平台

介绍了用于柔性交流输电技术（ＦＡＣＴＳ）装置控制系统设计和运行的计算机辅助工程（ＣＡＥ）平台。讨论了ＣＡＥ平台的系统结构、数据流程以及实现的功能。给出了ＣＡＥ平台的软件和硬件设计方法：软件设计采用Ｗｉｎｄｏｗｓ９５和ＶｉｓｕａｌＣ＋＋作为工具进行开发，并提供了对硬件系统的接口，因此用户界面友好，使用方便；硬件部分采用工业控制计算机为母机，以ＤＳＰ为协处理器，易于满足实时控制和提高装置可靠性的要求。ＣＡＥ平台作为一个一体化的环境，能支持ＦＡＣＴＳ装置控制器设计的整个生命周期，即理论设计、数字仿真、在线调试、动模实验和实时运行     

信用卡电话呼叫系统

信用卡电话呼叫系统,同ＩＰ电话技术、呼叫中心技术与信用卡支付手段相结合的系统,是集现代计算机技术、网络技术、ＣＴＩ技术、多媒体技术以及互联网技术于一体的、综合性的服务中心。信用卡电话呼叫系统即可独立成系统,也可以作为呼叫中心功能的一部分,对系统的体系结构、功能、应用以及发展方向进行了介绍。     

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