浅谈化学实验过程中的安全管理

实验安全问题关系到实验教师及学生的生命，又涉及自身及学校的经济问题。在乡镇中学，实验教师在化学实验室和在做化学实验的过程中，安全问题并没有引起高度重视，下面就本人在多年实验管理及实验教学中，对实验安全的一些做法和认识，谈出来与同行们商榷。     

二次击穿效应

论述了半导体器件工作在二次击穿区域内的特性，研究和总结了可见效应及电效应，这些效应与器件结构及各种工作条件下的电场及载流子分布有关，证明在具有中等和高电阻率的厚集电极情况下，可见损坏面积大，而电变化及损坏较之薄集电极外延层的情况小．     

压电现象、声波及器件应用

由于建立在压电固体中声波的产生和传播基础上的各种传感器和传输系无处不在地发挥作用，世界愈加智能化及相互关联，因而许多研究人员和工程师从事压电声波器件的分析、设计、制造、测试及应用工作，表现在“压电现象、声波及器件应用（SPAWDA）”专题讨论会的参与者及研究范围的不断扩大。     

在运动生理学教学中应用记忆规律的尝试

通过将记忆规律应用于运动生理学教学尝试，分析了短时记忆和长时记忆、机械记忆和理解记忆的特征及规律，对记忆规律及保持和遗忘规律在课堂教学和复习中的应用进行了初步探讨，结果表明，在运动生理学教学中，灵活运用记忆规律，对巩固提高教学效果将起到较大作用．     

试论中日“缀术”之异同

通过对和算及清代数学中的无穷级数展开式研究的分析，比较了两者在方法来源及方法特征上的差异与一致性，认为和算缀术是在宋元数学的基础上发展起来的，而清代无穷级数研究是东西方数学结合的产物，两者是相互独立的方法体系，但均以离散方法解决无穷小问题，而和算的积分、微分方法及代数方法都较清代数学发达。     

体育学院教学课件设计及评价

通过多年的多媒体教学实践，总结了体育学院多媒体教学中课件制作及应用现代教学技术的基本方法和原则，以及在教学中存在的问题，并探讨了体育学院多媒体及现代教学技术在体育教学中应用的基础理论问题和对教学课件进行客观评价等问题，为多媒体及现代教学技术在体育学院教学中的应用提供了参考。     

船舶斜浪航行生存概率预报的安全盆方法

针对首斜浪和尾斜浪中船舶航行安全盆的构造及生存概率的预报方法，采用安全盆方法预报随机海浪中船舶航行的生存概率，考虑阻尼和复原力矩的非线性及海浪的随机性，建立了船舶横摇运动的随机非线性微分方程，综合考虑船舶运动的瞬时状态、航速及航向角，采用简谐加速度方法在时域内求解横摇随机微分方程，构造船舶斜浪航行的安全盆并预报斜浪航行的生存概率．选取不同的初始条件、航速、航向角及随机波浪参数，在横摇初值平面上构造了一条长30．7m渔船的安全盆并计算了渔船的生存概率，分析和比较了在首斜浪和尾斜浪航行时，有义波高和航速对船舶安全盆和生存概率的影响．结果表明，船舶的倾覆是否发生，与航速、航向角及船舶瞬时运动状态密切相关，     

高校概率论与数理统计课程教学理念的探究

为培养学生对随机现象的理解及对概率的直觉，提高学生的数学修养及严密的思维能力，改善教学效果，该文对在教学过程中培养学生的兴趣和实践创新能力进行了探讨，在概率论与数理统计课程教学理念和方法上进行了一些研究。     

贯彻国家标准 正确使用法定计量单位—广东各高校学报贯彻量、单位和符号的

我国政府在1984年就发布关于在全国统一实行法定计量单位的命令，并规定从1991年1月起不准再使用非法定单位。但非法定单位及不正确使用法定单位的情况在高校学报及其他科技书刊中经常可见，本文剖析广东省各高校近年来出版的学报在贯彻量和单位的国家标准中存在的问题，给出常用计量单位的正确名称和符号与错误计量单位的名称和符号的对比，并给出其换算关系，供作者写稿及编辑改稿时参考。     

浅谈铁路招投标项目的设计组织体系

在铁路建设项目投标阶段中，设计组织体系及保证措施至关重要，就近年来铁路招投标项目的进展状况及发展趋势，结合在招投标工作中的一些经验和体会，总结出较为合理和完善的设计组织体系及保证措施，为相关单位参加铁路招投标项目提供思路和建议。     

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