《切削力测量实验》改革探索

传统的切削力测量实验为单一的演示性实验,课题组利用计算机测量技术对实验设备进行了调整,并从实验方式上也进行了改革,使实验变为综合性和设计性实验。本文从实验目的,实验设备和实验方式,实际的教学效果等方面进行了介绍,实验通过3届学生的实践教学检验,达到了预期的效果。     

初中化学实验探讨二例

氧气的收集实验、喷泉实验是中学化学实验中比较重要的两个实验．本文详细介绍了这两个实验的改良方法和操作步骤．通过一系列的验证实验并进行了数据分析，比较明显改善了实验效果．     

单光子计数实验系统及其应用

分析了单光子计数实验中采用脉冲幅度甄别器和光子计数器测量光子数的实验原理，讨论了可能影响实验测量精度及产生误差的原因，并运用MATLAB软件绘制实验曲线，该实验对实验操作者进行必要的实验技能训练的同时又提高了实验测量的精度。     

液体饱和蒸气压测定实验装置的改进

液体的饱和蒸气压实验属于化学热力学实验，它是一个比较经典的物理化学实验。文章介绍了该实验装置的改进，经过改进的装置，使实验操作易于控制，加快了实验速度，降低了实验失败率，同时也减少了实验室的环境污染。     

面向化学实验的仓库管理系统开发与设计

面向化学实验的仓库管理系统采用面向实验的设计思想,建立了实验基础数据库和实验过程数据库,实现了仓库中的易耗器皿、玻璃仪器和化学药品按照实验进行管理以及仪器和化学药品与实验的定制管理。提高了实验的快速准确性。     

数学实验方法与大学数学实验课程教学

从数学实验的方法论意义入手,阐释了数学实验方法、数学实验以及数学实验课程教学的含义;从数学教学、数学应用、数学研究角度,给出了数学实验的分类:(1)数学理论传授型数学实验;(2)数学理论应用型数学实验;(3)数学理论研究与探索型数学实验,并给出了每种类型实验的的基本内容和一般模式;最后提出了数学实验课程教学内容选择的一般原则.     

无机化学中几个学生实验的改进

对无机化学实验教材中一些实验现象不明显、实验效果不好的实验进行了改进,取得了较好的实验效果。     

频谱分析法在单摆实验中的应用

以现代化的实验手段改造传统实验,给予学生丰富的综合性实验技能训练,是各类实验课程改革的一项重要任务。作为信号分析和基础物理实验相结合的一个范例,引入感测技术和计算机技术,特别是频谱分析法改造了单摆测量重力加速度的实验,并完成了传统单摆实验无法完成的阻尼系数测量,既丰富了实验内容,又扩展了理工科学生应用现代化实验手段的能力。     

视频接口技术实验的开设与改进

详细介绍了所开设的“视频接口技术”实验课程的实验目的和内容。该实验课程分4组实验。分别描述了每组实验的内容和步骤，并给出了它们的系统框图。最后，针对学生的实验情况提出了进一步改进的意见。     

从物理学史看思想实验的作用

在前人研究的基础上探讨了思想实验的定义,通过物理学史中的实例论述了思想实验在物理学发展中的重要作用和意义;分析了思想实验和实物实验的异同;强调将思想实验和实物实验相结合的重要性。     

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