时序逻辑电路分析方法剖析

对触发器的翻转提出了“予令”和“动令”的概念，并在时序逻辑电路的分析中用符号“↑”或“↓”代表时钟信号的上升沿或下降沿，形象地描述了触发器状态与状态方程、时钟方程间的依存关系，提出了用次态卡图分析同步时序逻辑电路的分析方法。     

时序逻辑电路的次态卡诺图分析法

讨论了同步时序逻辑电路的次态卡诺图分析法与异步时序逻辑电路的次态卡诺图的分析法,这两种方法分别是利用状态方程给出各触发器的次态卡诺图,并由次态卡诺图画出状态转换图以及利用状态方程和时钟方程绘出包含“动令”在内的各触发器的次态卡诺图,并由次态卡诺图画出状态转换图,该法是１种分析时序逻辑电路功能的新方法。     

反演卡诺图和对偶卡诺图

根据反演规则和对偶规则定义，给出了反演卡诺图和对偶卡诺图，进而利用反演卡诺图和对偶卡诺图将逻辑函数“或与”表达式化简及化成“与或”表达式，很适于用“或非”门实现的电路分析和化简。     

精确计算重整化N—-↑N圈传播子的新计算方法

采用核子N（反核子-↑N）与中性介子π^0相互作用的Lorentz不变耦合模型，对N—-↑N图图传播子在“动量重整化方案”中的“动量正规化”作了深入细致的分析与考证，发现可以采用“矩阵函数展开法”来替代通常采用的“传统减除法”，并由此对N—-↑N圈图传播子函数中的“发散量”与“有限量”作了十分简捷有效的分离，获得了“重整化有限量”的一个具有“明确计算含义”的表达式．进而，又对所获得的结果采用“大动量积分极限法”作了十分有效的计算处理，获得了可供作“严格解析计算”的一个“一维积分计算表达式”——这将为“精确计算”N—-↑N圈图传播子重整化有限量提供出简捷可行的有效计算途径与方法．     

基于卡诺图的多变量逻辑函数化简原则的一个补充

文中从经典卡诺图化简原则出发,结合一个实际的多变量逻辑函数化简问题,经讨论给出用卡诺图进行逻辑函数化简的一个补充原则,即在卡诺图上一个圈中如有2^i（i=0,1,2…）个逻辑“1”项,则该圈中任意一个逻辑“1”项在本圈中存在而且只存在i个逻辑相邻项。     

插入变量卡诺图原理及其工程应用

本文介绍利用插入变量卡诺图原理设计移位寄存器的方法,所谓插入变量卡诺图,即卡诺图中不仅可以插入“0”、“1”和无关项“φ”,而且可以插入逻辑变量和逻辑表达式,所以说,它是卡诺图的一种扩展.利用此原理不仅可以简化卡诺图的大小(即方格数),而且可以帮助我们进行较复杂的逻辑电路设计.首先我们对插入变量卡诺图原理加以介绍,然后利用此原理论述移位寄存器的设计.     

一种求Ramsey数的命题演算法

首先在矩阵中用谓词描述“含Kn”和“含－↑Km”，然后通过命题演算法逐行求出不含Kn也不含－↑Km的矩阵（aij)j=i 1,…，l^i=1,2,…l-1，若对于l≤r－1有这样的矩阵，而对于l=r却没有，则r为Ramsey数。     

多变量卡诺图及其应用

本文给出了多变量卡诺图的结构和性质，应用它可得到多变量布尔函数的最简表达式。此外，利用卡诺图还获得了判定逻辑冒险，功能冒险的一些定理。     

阻塞法化简逻辑电路

本文根据布尔代数的基本定理,引入“阻塞逻辑”的定义,讨论用“阻塞法”化简逻辑函数的具体方法,同时提出卡诺图“1”重心、“0”重心的概念及实现变量单轨输入的方法。     

Q∝Δ（T^n）时广义不可逆卡诺热机的生态学性能优化

以反映热机功率与熵产率之问最佳折衷的“生态学”准则为目标，根据生态学优化方法研究传热规律服从Q∝Δ(T^n)时不可逆卡诺热机生态学最优性能．在内可逆模型基础上，用常数项q表示热漏流率，用常数项Φ表示除热阻和热漏以外的其余不可逆性，导出了传热规律服从Q∝Δ(T^n)时广义不可逆卡诺热机生态学优化性能．通过数值计算对不同损失、不同传热规律情况下的热机生态学性能变化规律进行了比较分析，本文结果对实际热机的设计工作具有一定的理论指导意义．     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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