氢键分子链中质子转移的二分量弧子动力学

本文讨论了氢键分子链中质子转移的二分量弧子模型,求出了孤子的迁移率、电导率的表示式。并指出孤子具有非牛顿粒子行为,孤子的共振频率等于O—H振动频率。     

氢键分子系统中扭结孤子偶的辐射及其核化特性

运用一个新的氢键系统的二分量弧子模型，讨论了氢键系统在外场作用下弧子偶的运动，研究了弧子偶对电磁波的散射和核化特性，得到了弧子偶对电磁波的散射截面和平均核化率的表达式。     

光纤通讯系统中光弧子传输研究的新进展

综述了国外光纤通讯系统中光弧子传输研究的一些新进展,包括：１．光纤中Ｎ弧子相互作用;２．光纤中的光脉冲传播;３．在色散移位光纤中的飞秒经了－弧子相互作用;４．强耦合非线性参数弧波;５．光纤中有限带宽弧子传播的高阶效应;６．用非线性环形反射射对有限带宽弧子传播中的噪声积累进行抑制。     

氢键系统中质子转换的二分量弧子非线性力学

采用二分量弧子模型，讨论了在外场和阻尼存在的情况下，氢键系统中扭结弧子的运动，研究了重离子子晶格运动和光学模对质子子晶本的影响，获得了扭结弧子解，迁移率和电导率，计算结果和实验值相一致。     

氢键分子链中原子间非谐相互作用下扭结孤子的能量和动量

在具有对称双阱势的氢键分子链中，通过讨论原子间非谐相互作用对扭结孤子的影响，获得了３次方到６次方非谐项下扭结与反扭结弧子的能量和动量，并计算了由非谐项引起的扭结与反扭结孤子的电荷密度。     

空间光弧子自诱导波导的模式分析

从空间光弧子诱导折射率分布出发，推导出空间光弧子自诱导波导的色散方程和模场分布，得到了信号光在空间光弧子自诱导波导中模式产生的条件，为在全光器件中应用提供了基础。     

PNB聚合物的激子及其对静电场的响应

在Baranowski-Butterner-Voit模型的框架内，得到了PNB聚合物有限长开链的自隐激子态。研究了静电场对激子的影响，发现电场对激子的电荷密度、能级、据角序参量、键序位形都有较明显的影响；并使激子吸收峰从红外波段进入可见光波段。当电场超过0．74MV/cm时，激子解离成一对正反纽结孤子，此时，激子吸收峰分裂成1．1和1．4eV左右的两个峰，分别对应于电子型弧子和空穴型弧子。由此对实验上已观察到1．0和1．3eV两个短寿命低能吸收峰的成因作出了解释。     

链间耦合对极化子动力学的影响

基于扩展的SSH模型,考虑链间耦合作用,研究了有机共轭聚合物中链间耦合强度以及耦合区域宽度对极化子动力学的影响.研究表明,电场驱动下极化子在近邻链间的跃迁过程与耦合强度及区域宽度密切相关.当链间耦合强度适中且耦合区域宽度与极化子宽度相当时,极化子最容易实现从一条链到近邻链的跃迁.此外,若耦合区域存在几何缺陷,即便强电场也难驱动极化子在链间跃迁.     

聚合物中链间扩展的极化子动力学

基于紧束缚模型,研究了高度有序的耦合聚合物链系统中的极化子形成及运动过程．发现随着链间耦合的增强,掺杂或注入到系统中的电子形成局域极化子所需要的时间变长．当链间耦合超过一定强度时,电子将演化形成二维链间扩展的极化子．同时动力学模拟表明,以链间扩展的极化子为载流子的有序的有机分子体系,其迁移率高于以链内局域极化子为载流子的体系．     

基于子组行为关系的过程模型修复

提出基于子组行为关系的模型修复方法.依据必要事件保序对日志进行过滤,将日志与模型分解成子组日志和模型子块;基于最优对齐提取子组日志中不拟合的子日志,分析子日志活动间行为关系;对于增加、删除的行为关系,在子块中插入、删除活动及相应的弧和库所;对于发生变化行为关系,在子块中改变相应的弧以支撑新行为.     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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