“魔术风轮”的原理

介绍了“魔术风轮”的现象，对其建立了物理模型，并动用数学手段进行了推导，得出了风轮的物理本质．并介绍了作者制作的风轮尺寸及演示效果．     

日本太阳辐射模型的研究概况与评析

太阳辐射模型是太阳能应用的一个非常重要的基础．本文介绍了日本太阳辐射模型的研究概况，并对其进行了评析．这些介绍与评析可为中国太阳辐射模型的研究提供参考     

基于CPLD的线路编解码器的设计与实现

介绍了水下潜器三维图像数字传输系统线路编解码器设计原理．该设计采用了586B线路码型，其核心电路用可编程逻辑器件CPLD实现．介绍了电路设计原理以及系统实验．通过试验验证了方案的可行性和先进性．系统误码率满足设计要求．     

汽车车载网络技术及其应用

文章介绍了汽车车载网络的分类、主要网络协议厦其应用情况．指出了今后汽车网络研究的动向．     

新型故障诊断方法在装备中的应用研究

介绍了故障字典法特征,并以其在某装备系统中的电路故障定位研究为例详细做了介绍,由此来分析其在故障定位中的优缺点．     

万塘水库病害原因分析及整治加固

介绍了万塘水库的概况，指出其存在的主要病害险情，并从多方面对其进行成因分析，在此基础上介绍除险加固设计的要点．万塘水库的病害对于一大批老水库具有一定的代表性，反映了对病险水库的整治加固的重要性和紧迫性．     

排序击中与否变换在模式识别中的应用

介绍了一种识别汉字的方案．其采用形态学中排序击中与否变换，并利用可编程光电混合图象处理系统加以实现．采用该方案可准确有效地对汉字进行识别．文中给出了实验结果并对其进行了讨论     

番茄红素的简便提取方法及抗氧化效果的研究

介绍了油脂提取番茄红素,作为抗氧化剂使用的提取工艺．并对其抗氧化效果作了研究．实验表明,工艺简单,元需纯化,抗氧化效果明显．     

高校前孵化器——促进自主创业及科技创新的重要模式

前孵化器是一种促进早期商业发展的机制．它在高校教育机构向实体商业孵化发展过程中起到了很好的衔接作用．为自主创业和经济创新提供了重要的辅助模式。着重介绍了其概念的提出与发展，并以国内外实践应用为例子介绍其取得的效果。     

短切碳纤维／ABS塑料复合材料

介绍了用短碳纤维和ＡＢＳ塑料制作的复合材料的复合规律和制作工艺，测定了其力学性能，观察了断口形态．结果表明，所制复合材料的力学性能在宏观上各向同性，其强度是ＡＢＳ塑料的２．５倍．     

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