科学技术体系的建构基础及演变方向

科学技术体系发展至今,开始陷入诸如"知识爆炸"、"逻辑混乱"等一系列的困境.要解决这些问题、探索体系新的发展方向,必须要对体系的基础进行透彻的分析.科学技术体系的现状表明,未来的科学技术体系的建构,将逐渐过渡到以工程技术为核心.传统的以"学"为主的科学技术体系会慢慢向以"用"为主的科学技术体系演变.     

泰州长江公路大桥振动台试验——试验设计及抗震结构体系试验结果分析

为了研究大跨多塔悬索桥合理抗震体系,以泰州长江公路大桥为背景,设计并制作了1∶40缩尺比例模型,进行了全桥振动台模型试验.通过改变中塔与主梁间的连接方式,建立了无约束体系、阻尼器体系和弹性索体系等3个试验模型,并分别测试了其全桥地震反应.试验结果表明,利用白噪声对结构进行扫频,可以识别3种纵向约束体系的一阶频率和阻尼比.与纵向无约束体系相比,阻尼器体系和弹性索体系能够不同程度地减小塔顶位移和塔、梁相对位移.阻尼器体系可以更均衡地限制在场地人工波激励下中塔和边塔处的塔、梁相对位移;而弹性索体系限制中塔处塔、梁相对位移的能力更优.研究结果对大跨多塔悬索桥抗震设计具有一定的参考价值.     

清远市清新县:教育事业引导特色技术支撑

清新县自2009年4月成功创建广东省可持续发展实验区以来,狠抓教育事业,促进社会事业的全面发展.以教育为中心的文化、科技、卫生、社会保障等各项社会事业全面发展,基本形成比较完善的现代国民教育体系、科技和文化创新体系、全民健身和医疗卫生体系.社会事业的全面进步,使得社会就业更加充分,社会保障体系更加完善,公共服务体系更加健全.清新县形成了文明法治、稳定和谐、宽容诚信的和谐局面.     

FY油层深度二元体系调驱技术的研究与应用

油层深度二元体系调驱是由FYJ凝胶调驱体系和FYF分子膜调驱体系组成的.介绍了FYJ凝胶调驱体系中交联剂的合成、凝胶调驱的机理、凝胶调驱体系性能;FYF分子膜调驱体系中调驱剂的组成、FYF分子膜调驱剂的作用机理、FYF分子膜调驱体系性能.室内调驱试验结果表明:油层深度二元体系调驱可以有效提高调驱压力,FYJ凝胶调驱体系与FYF分子膜调驱体系具有良好的配伍性.现场应用结果表明:启动压力上升,吸水指数下降,吸水剖面得到明显改善,经调剖注水后,7口采油井均明显见效,见效率达100%.     

论法治中国建设的三重架构

法治中国建设,是个以宪法至上为精神架构、以法治中国为主体架构、以法治体系为运行架构的三重综合体.任何人没有法外特权,所有人都受宪法的支配,这种对宪法的信任,视宪法为人生信仰乃至用生命去践诺宪法的行为,即崇尚和遵循宪法至上.法治中国建设是个全方位推进依法治国的总概念,从属概念分为建设法治国家、法治政府、法治社会.法治体系是指一国法制系统运转机制和运转环节的全系统,包括立法体系、实施体系、监督体系、保障体系等,由这些体系组成了一个纵向的法制运转机制.所以,法律规范体系是否完备,法治实施体系是否高效,法治监督体系是否严密,法治保障体系是否有力,直接关系到法治中国建设的成败.     

反应性聚碳酸酯增韧改性环氧树脂的相结构与性能

研究了反应性聚碳酸酯 /环氧树脂体系中胺化聚碳酸酯的用量对固化体系的形态结构、玻璃化转变温度 Tg 和力学性能的影响 .用 SEM和 AFM对固化体系的形态进行了表征 .结果表明 ,固化体系的相容性良好 ,形成一个均相网络结构 .对胺化聚碳酸酯改性环氧树脂的体系与纯环氧树脂体系的力学性能进行了比较 ,发现前者断裂韧性和冲击韧性分别提高了 50 %和 4 4% ,而弯曲性能变化不大 ,拉伸性能有所下降 .DSC的测试结果表明增韧体系的 Tg 下降 .     

山东省城市体系规模分布的分形特征

运用分形理论,借助Zipf公式分析了山东省城市体系规模分布的分形特征.研究认为,山东省城市体系规模分布具有分形特征,且区域差异性减小,城市体系规模分布趋于均衡;但首位城市规模相对较小,城市体系规模分布不尽合理.针对山东省城市体系规模分布的问题提出大、中、小城市协调发展,构建城市网络体系的对策.     

吉林省居住建筑节能评价体系研究

分析研究吉林省居住建筑节能评价体系的作用和意义.介绍评价体系构建的基本原则、指标体系来源.得到评价体系的性能指标,并指出其主要特点.     

论代数公理化体系与中小学数学教学

数学公理化方法是研究数学的重要方法,代数公理体系是数学公理体系中的子系统.代数系统是集合连同满足某个公理体系的运算合称.中小学数学中处处体现公理化思想,因此在中小学数学教学中讲授代数公理化体系必要且可行.本文从公理化方法、代数公理体系、中小学代数教育及代数公理化在中小学教学中的作用几个方面来阐述.     

转型期城市规划改革若干问题的思考

为迎接体制转型、城市化快速发展和我国加入WTO的挑战,城市规划必须从组织体系、技术体系、运作体系、法规体系和教育体系系统变革.     

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