重现光彩的Basic语言

Ｂａｓｉｃ语言是美国Ｍｉｃｒｏｓｏｆｔ公司的产品, 在我国曾经风靡一时, ８０ 年代在各高校均作为计算机专业主流入门课程来讲授。由于Ｂａｓｉｃ语言自身的功能太弱, ８０ 年代末, 尽管Ｍｉｃｒｏｓｏｆｔ公司不断推出Ｔｒｕｅ Ｂａｓｉｃ和Ｑｕｉｃｋ Ｂａｓｉｃ等软件, 但是Ｂａｓｉｃ的用户还是不断减少, 连入门教学语言的地位都已经被Ｐａｓｃａｌ语言所取代。直到９０ 年代Ｍｉｃｒｏｓｏｆｔ公司重新包装Ｂａｓｉｃ语言, 重拳推出了ＶｉｓｕａｌＢａｓｉｃ （简称ＶＢ）, 特别是１９９７ 年ＶＢ５．０ 版本问世后, Ｂａｓｉｃ语言才重新焕发了光彩。     

计算机音乐.音乐的本质.探索与前瞻

计算机音乐·音乐的本质·探索与前瞻ＣｏｍｐｕｔｅｒＭｕｓｉｃ·ＭｕｓｉｃＥｓｓｅｎｃｅ·ＥｘｐｌｏｒａｔｉｏｎａｎｄＰｒｏｓｐｅｃｔｓ￥／／龚镇雄（北京大学物理系音乐声学与计算机音乐研究室，教授北京１００８７１）一、计算机音乐的兴起当前科学的发展有三...     

用Visual Basic开发的基于Windows的IBM机与单片机串…

功能强大、易学好用的程序设计语言Ｖｉｓｕａｌ Ｂａｓｉｃ越来越受程序设计人员的欢迎。程序设计人员甚至使用Ｖｉｓｕａｌ Ｂａｓｉｃ来编写中、高级Ｗｉｎｄｏｗｓ环境下的应用软件。在很多应用系统中，需要使用到串行通讯，串行通讯因传输线少、布线方便被广泛使用。Ｖｉｓｕａｌ Ｂａｓｉｃ中的Ｃｏｍｍｕｎｉｃａｔｉｏｎ Ｃｏｎｔｒｏｌ方便地实现计算机间的串行通讯。本文通过应用实例和程序，介绍用Ｖｉｓｕａｌ Ｂａ     

蛇岛蝮蛇（Agkistrodon qianshanensis shedaoensis）的生态观察

我们从１９７３－１９８４年对辽宁蛇岛上的蝮蛇（Ａｇｋｉｓｔｒｏｄｏｎｑｉａｎｓｈａｎｅｎｓｉｓｓｈｅｄａｏｅｎｓｉｓ）的生态习性进行了观察。蛇岛蝮蛇的活动规律、捕食特点、繁殖习性等都适应了蛇岛的特定环境，因而得以生存至今。     

计算机模拟惠斯登平衡电桥

在惠斯登平衡电桥的理论基础上,利用ＶｉｓｕａｌＢａｓｉｃ语言模拟此实验． 结合设计过程,寻求了这种较完善的表现手法,加深了实验理论的理解与应用,是计算机辅助教学软件设计的一例．     

计算机网络考试分析系统的设计与实现

提供一种在多媒体教室管理中使用的考试分析系统的设计与实现方案,该系统是基于Ｗｉｎｄｏｗｓ ＮＴ平台,用Ｖｉｓｕａｌ Ｂａｓｉｃ ６．０开发,可实现交互测试的计算机网络考试分析系统,该系统还建立、并实现了试题库的动态维护及学生信息的管理。     

荷木种群在不同群落中的分子生态研究

用扩增片段长度多态性（ＡＦＬＰ,ａｍｐｌｉｆｉｅｄ ｆｒａｇｍｅｎｔ ｌｅｎｇｔｈ ｐｏｌｙｍｏｒｐｈｉｓｍ）方法对荷木（Ｓｃｈｉｍａ ｓｕｐｅｒｂａ）在３个不同群落中的遗传变异进行了研究。ＡＦＬＰ分析结果表明其遗传多样性较高。用ＡＭＯＶＡ（ａｎａｌｙｓｉｓ ｏｆ ｍｏｌｅｃｕｌａｒ ｖａｒｉａｎｃｅ）分析表明,９５．９９％的遗传变化表现在种群内,４．０１％的遗传分化表现在种群间（Ｐ〈０．００１）     

关于拟遗传代数的Kazhdan—Lusatig理论

用同调代数的方法，研究拟遗传代数与其反代数，与其标准商代数之间关于Ｋａｚｈｄａｎ－Ｌｕｓｚｔｉｇ理论的性质，证明了：设拟遗传代数（Ａ，∧）有相应于长度函数ｌ的Ｋａｚｈｄａｎ－Ｌｕｓｚｔｉｇ理论，则它的反代数（Ａ＾ｏｐ，∧）也有相应于ｌ的Ｋａｚｈｄａｎ－Ｌｕｓｚｔｉｇ理论，它的标准商代数（Ａ／ＡεｉＡ，∧ｉ）有相应于诱导函数ｌ′的Ｋａｚｈｄａｎ－Ｌｕｓｚｔｉｇ理论。     

利用Visual Basic编程实现分光光度计的计算机模拟操作

以７２２型光栅分光光度计为例,提出利用ＶｉｓｕａｌＢａｓｉｃ编程实现分析仪器的计算机模拟操作。通过该方法,用户可以在提示信息帮助下,在计算机上模拟分光光度计从开机、仪器调试到样品测定及仪器关闭的每一步操作。该程序已在本科分析化学实验教学中使用,取得了很好的效果。     

Visual Basic4.0版本中的通讯问题研究

Ｖｉｓｕａｌ Ｂａｓｉｃ是深受程序员欢迎的一种编程软件,作者在利用ＶＢ的通讯控件进行通信口管理时,发现有数据丢失现象。本文分析了造成数据丢失的原因,提出了解决问题的方法,并在变电站计算机综合自动化控制系统中得到了应用。     

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     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

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