数字光电效应实验仪的设计

通过对CP-1型光电效应实验仪经常出现问题的分析，提出了数字光电效应实验仪的设计原理和具体电路，并且利用数字光电效应实验仪测量了相应的实验数据，结果表明该设计方案简洁可行。     

光电法鉴别孵化早期无精蛋的设计性物理实验

讨论利用现成的光电效应实验仪来测量孵化早期鸡蛋的透光性的实验组装的技术问题和基本原理,提出了利用贝叶斯决策理论把孵化早期无精蛋鉴别出来的方法.     

爱因斯坦和光电效应

介绍了光电效应的发现、光电效应理论解释、密立根光电效应实验,着重讨论了爱因斯坦在1905年提出光量子概念,从而正确解释光电效应的工作.     

嵌入式智能数字电路实验仪的研究与设计

在分析目前数字电路实验仪存在的问题的基础上,设计了一种基于嵌入式系统的智能数字电路实验仪,该实验仪具有在不干扰原使用硬件的数字电路实验的同时,增加了对实验过程检测、指导和自动评价实验结果是否正确的功能.文章重点介绍了本实验仪的工作原理、特点和系统组成。     

SCP-1型单片机实验仪的研制及应用

介绍自制的单片机实验仪的原理与结构 ,并给出了该实验仪在实验教学和课程设计中的应用。     

RLC串联电路谐振特性实验仪的设计

研制了以ICL8038,单片机为主控芯片的实验仪,可分别用三种工作方式对RLC串联谐振电路的谐振频率、品质因数、通频带等主要参数进行测量.详细分析了实验仪的结构和工作原理.实验仪的测量及演示效果好.     

一种微机控制实验仪的研究

本文介绍一种微机控制实验仪的设计思想、硬件组成和软件特点,并对该实验仪的进一步开发进行了探讨。     

自制光电效应演示仪

利用传统的光电效应实验装置的部分设备,结合光学和电磁学理论知识,自制的一套光电效应演示仪,易操作,能简单、形象、直观地反映光电效应。     

“光电效应”教学中应注意的两个问题

"光电效应"是技工学校物理教学中的重要内容,也是教与学的难点。本文运用实例有效地论证了在"光电效应"教学中应注意的两个问题,即准确的理解光子、光子说和爱因斯坦光电效应方程以及适当注意教学的逻辑性。     

单片机仿真实验仪在汉字LCM开发中的应用

介绍了用DP-51单片机实验仪开发汉字LCM．汉字型液晶显示模块OCM48C与单片机可以采用并行接口或串行接口方式,用DP-51单片机实验仪液晶显示接口连接汉字模块OCM4(8C,能简便的进行汉字显示开发,使该实验仪成为一个汉字LCM开发的有力工具．     

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.     

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     

Journal of Donghua University ( English Edition) Contents of Volume 31

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