正交四值函数

利用多值逻辑和正交函数理论，提出一种新的正交函数－正交四值函数，并作了严格的定义及前８个正交四值函数的图形，指出这种函数可以展开成四值函数级数，且按最小均 方逼近误差理论，得到了当它展开成级数时的系数Ｃｊ。     

关于四值JK触发器的研究

从分析二值触发器的特点着手，由三值触发器的研究＾「１－３」推广到四值触发器的研究，并提出了具有四轨输出的四值ＪＫ触发器。     

三值四态门的TTL电路实现

本文首先分析了以电阻为集电极负载的三值ＴＴＬ输出级电路，根据开关模型，建立了含有四个状态输出的三值ＴＴＬ输出级电路，并讨论了该电路中的晶体管开关元件与信号间的相互作用过程，补充了文献「２」提出的限幅电压开关理论。通过实例提出了基于限幅电压开关理论的三值四态门的ＴＴＬ电路设计方法。     

C#语言中参数传递分析研究

C#中的数据类型有值类型和引用类型，参数传递有值传递和引用传递，在程序设计实践中，数据类型和传递方式组合出了通过值传递值类型、通过值传递引用类型、通过引用传递值类型和通过引用传递引用类型四种情况。本文分别对这四种情况作了实例分析，比较了参数传递格式、不同传递方式对调用方和被调用方的影响，对于掌握运用C#语言有积极意义。     

四值异步时序电路的设计

采用时钟覆盖法设计异步时序电路，能够获得最佳的时钟方程，本文主要讨论选用以模代数为系统的四值JK触发器，采用时钟覆盖法设计四值异步时序电路。     

具有四个公共值的亚纯函数

研究了具有四个公共值的亚纯函数的唯一性问题，改进了Ｎｅｖａｎｌｉｎｎａ，Ｇｕｎｄｅｒｓｅｎ，Ｍｕｅｓ等的有关定理。     

具有四个公共值的亚纯函数

研究了具有四个公共值的亚纯函数的唯一性问题，改进了Ｎｅｖａｎｌｉｎｎａ，Ｇｕｎｄｅｒｓｅｎ，Ｍｕｅｓ等的有关定理．     

时间序列异常值影响估计的探讨

在异常值影响的示性函数分别为脉冲函数和阶跃函数的条件下，对时间序列中经常出现的四类异常值的影响进行详细的分析，得到了其影响参数的估计值．     

关于亚纯函数导数的四值定理的一个注记

本给出了关于亚纯函数导数的四值定理1和推论2，从而推广了[3]中给出的亚纯函数导数的四值定理。     

亚纯函数导数的4IM值定理

讨论了两个亚纯函数的导数具有四个公共值时的唯一性问题，得到超越亚纯函数ｆ１和ｆ２的各阶导数都相等的两个条件。     

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     

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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