有源介观二阶RLC串并联电路的量子效应

借鉴阻尼谐振子正则量子化方法,实现了对有源介观二阶RLC串并联电路的量子化,在此基础上研究了真空态下电路中电荷和自感磁通链、电压和电流的量子涨落.结果表明,对于有源介观二阶RLC串并联电路,其在真空态下电荷和自感磁通链、电压和电流都存在着各自的量子涨落,且量子涨落及量子涨落积的大小皆与电路中的器件参数有关,并随时间按指数规律衰减.     

用Wigner函数理论研究介观串并联RLC电路的量子涨落

考虑阻尼和温度影响,将介观串并联RLC电路等效成量子化阻尼谐振子,利用Wigner函数和热场动力学理论研究了热真空态、真空态下电流和电压的量子涨落.结果表明,支路电流电压的量子涨落不仅与电路器件的参数有关,而且和环境温度有关.且由于电流焦耳热、环境温度和阻尼电阻的影响,涨落随环境温度升高而增大,随时间而衰减.     

热真空态下介观串并联RLC电路的量子涨落

利用阻尼谐振子量子化方法,将介观RLC串并联电路量子化,在此基础上,研究了热真空态下,各支路电流和电压的量子涨落,结果表明,各支路电流电压的量子涨落均与电路器件的参数以及温度有关,且随时间衰减。     

量子化介观RLC并联电路在压缩真空态下的量子涨落

对具有普遍意义的量子化介观RLC并联电路各支路的电流与电压在压缩真空态下的量子效应进行了研究,并对影响各支路电流与电压的量子涨落的因素进行了分析.结果表明,在压缩真空态下量子化介观RLC并联电路中各支路电流与电压的量子涨落受到电路元件的参数、压缩真空态的参数以及时间因素的影响,具体表现在各支路电流与电压的量子涨落随时间...     

压缩真空态的激发态下介观串并联RLC电路的量子涨落

将介观串并联RLC电路等效成阻尼谐振子并量子化,研究了压缩真空态的激发态、压缩真空态、真空态下电流和电压的量子涨落.结果表明,支路电流电压的量子涨落不仅与电路器件的参数有关,而且和激发量子数、压缩因子及压缩角有关,并随时间衰减.     

介观LC电路数-相空间的量子涨落

从电路系统的Lagrange量人手,利用数-相量子化方案,将介观LC电路量子化,得到了数-相算符表示的Hamiltonian,研究了真空态和压缩真空态下电路中电荷数和相位差的量子涨落.结果表明在真空态下的量子涨落只与电路器件的参数有关,而在压缩真空态下的量子涨落不仅与器件参数有关,还和压缩参数有关.     

有限温度下介观串并联RLC电路的量子涨落

将介观串并联RLC电路等效成阻尼谐振子.并量子化，利用热场动力学理论研究了热真空态、热相干态、热压缩态下电流和电压的量子涨落．结果表明，支路电流电压的量子涨落不仅与电路器件的参数有关，而且与压缩因子及压缩角有关．还与环境温度有关．且由于电流焦耳热、环境温度和阻尼电阻的影响，涨落随环境温度升高而增大，随时间增加而衰减．这对微小电路的设计、电路量子噪声的抑制，具有十分重要的理论指导意义．     

热真空态下介观并联LC电路的量子涨落

从经典LC并联电路的运动方程出发，将介观LC并联电路量子化．在此基础上，研究了热真空态下各支路电流和电压的量子涨落．结果表明，各支路电流电压的量子涨落均与电路器件的参数以及温度有关．     

热压缩态下介观RLC电路的量子涨落

通过量子化RLC电路,讨论了在热压缩真空态和热压缩态下介观RLC电路中电荷、磁通的量子涨落.     

有限温度下介观互感电容耦合双谐振电路的量子涨落

从满足的微分方程入手,对介观互感电容耦合电路作双模耦合谐振子处理,利用谐振子量子化的方法将其量子化.通过线性变换,将体系的哈密顿量对角化,给出了体系的本征能谱.在热场动力学(TFD)理论框架下,研究了热真空态、热相干态及热压缩态下回路中电荷和电流的量子涨落.结果表明:电荷电流的量子涨落不仅和电路自身的参数、彼此的耦合程度有关,而且还和压缩度、压缩角及环境温度有关,并且随温度的升高而增大.     

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