工控机与PC机间的串行通信技术

分别阐述了ＳＴＤ总线工控机和ＩＢＭ－ＰＣ机串行口的使用要点,介绍了ＣＰＵ模板采用８０３１片机的ＳＴＤ５０００系列工控机与ＩＢＭ－ＰＣ机二者之间串行通信的一种实用方法,并阐述了通信接口的硬件设计和软件设计。     

聚合物芳核上C—H键的键离解能与聚合物的热稳定性

由聚合物ＰＰＯ、ＰＣ、ＭＰＭ、ＴＤ、ＭＰＰ、ＴＰＰ和ＰＳ芳核上Ｃ－Ｈ键的伸缩振动频率计算了对应聚合物芳核上Ｃ－Ｈ键的键离解能。结果表明,计算所得键离解能顺序与聚合物热稳定性的顺序完全一致。     

CDMA技术原理及在PCN中的应用特点

介绍码分多址（ＣＤＭＡ）技术原理及个人通信网（ＰＣＮ）基本思想，在与频分多址（ＦＤＭＡ）、时分多址（ＴＤＭＡ）技术比较后，说明了ＣＤＭＡ应用于ＰＣＮ中的优越性。     

金顶侧耳多糖同Con A相互作用的研究

从金顶侧耳子实体中分离纯化三种水溶性多糖．Ｇ·Ｃ分析表明ＰＣ－２由葡萄糖、半乳糖、岩藻糖组成；ＰＣ－３由半乳糖、甘露糖组成；ＰＣ－４是单一的葡聚糖．经琼脂糖双扩散，ＰＣ－３同ＣｏｎＡ间可产生沉淀线．定量沉淀反应与ＣＤ谱分析均表明ＰＣ－３通过非还原末端的α－Ｍａｎ与ＣｏｎＡ形成了多糖—蛋白质复合物．部分酸水解实验表明，ＰＣ－３同ＣｏｎＡ的作用与糖链的分支程度有关．高碘酸氧化与硫酸化修饰则使ＰＣ－３同ＣｏｎＡ的结合能力降低或丧失．     

PEO（MMEC,MNEC）—TPC—LDABS高分子单离子导体的设计与合成

合成了三元共聚物ＰＥＯ－ＴＰＣ－ＬＤＡＢＳ、ＭＭＥＣ－ＴＰＣ－ＬＤＡＢＳ和ＭＮＥＣ－ＴＰＣ－ＬＤＡＢＳ，可望成为一类新的高分子固体电解质材料     

C_PCP与_w_w_CPCP的关系

本文证明了下面２个结果：（１）当Ｘ＊具有ＰＣＰ时，Ｃ＊ＰＣＰ与（ｗ＊－ｗ）ＣＰＣＰ等价；（２）Ｘ＊具有Ｃ＊ＰＣＰ当且仅当Ｘ＊具有（ｗ＊－ｗ）ＣＰＣＰ且对Ｘ＊的每个非空ｗ＊－紧凸子集Ｋ，（ｗ＊－ｗ）ＰＣ（Ｋ）含有Ｋ的一个ｗ＊－稠密Ｇ子集．     

基于混合速率的TD—SCDMA系统容量

ＴＤ－ＳＣＤＭＡ作为中国提出的第三代移动通信系统，除支持话音业务外，还支持不同速率的数据业务。基于混合速率的情况下，对ＴＤ－ＳＣＤＡＭ系统的容量进行理论分析。     

数字式交流伺服系统的一种自动加减速控制方法

本文针对ＴＤＭ０４Ａ高速ＣＮＣ钻铣床数字式交流伺服进给驱动系统高速性能的要求，提出了使用硬件逻辑器件构成位置脉冲自动加减速控制的方法，完成了基于ＩＢＭ－ＰＣ机的自动加减速控制接口电路的研制，从而简化了由单微机构成的交流伺服驱动系统控制软件的结构，加快了微机数据处理速度，提高了机床进给系统的运行速度。     

具有（w—w）CPCP的共轭空间X

本文引进了概念（ｗ－ｗ）ＣＰＣＰ，并证明了：若Ｘ具有（ｗ－ｗ）ＣＰＣＰ，则Ｘ的每个非空ｗ－紧凸子集Ｋ的弱－弱连续点集是Ｋ－稠密子集。     

CPC-BF_4~--PVC 涂膜石墨电极示波电位滴定法测定硼

研制了一种能对ＢＦ－４响应的ＣＰＣ－ＢＦ－４－ＰＶＣ涂膜石墨电极。提出了一个快速测定硼的零电流示波电位滴定法。以氯化十六烷基吡啶（ＣＰＣ）为滴定剂，用涂膜石墨电极为指示电极，甘汞电极为参比电极。利用阴极射线示波器荧光屏上荧光点的突然位移来指示ＣＰＣ滴定硼的终点，具有灵敏、准确、快速等特点。用该法测定陶瓷中的硼，结果良好。     

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.     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

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