基于生态安全的三峡水库管理创新研究

随着2009年三峡工程的全面建成,三峡工程的中心工作将由工程建设转向水库管理。三峡水库管理异常复杂,没有现成的成熟的管理办法可供借鉴,未来水库管理面临诸多挑战。为了确保三峡水库的生态安全,需要从完善水库法规体系,创新管理体制,创新生态补偿机制,创新绩效考核评估机制,实施生态移民工程等方面对运行期三峡水库管理进行创新性思考。     

三峡水库综合利用调度关键技术研究与实践

为全面提升三峡工程的综合利用效益,三峡水库蓄水以来对规划设计的水库调度方式进行了优化研究与实践。文章对其关键技术进行分析总结,主要有协调防洪、发电、航运、供水和生态等多目标需求的技术、调度风险控制技术、调度决策优化技术、编制调度规程以规范调度工作等。通过分析以寻求不断完善三峡水库综合利用调度方式的路径,力求实现三峡工程效益最优,成为环境友好且对社会公益性贡献突出的跨世纪宏伟工程。     

三峡引水工程--南水北调工程的一个重要发展

经过几代人的努力 ,三峡工程明年将蓄水发电 ,其防洪、发电、航运的三大效益将得到初步发挥。随着三峡工程的建成 ,不少三峡建设者在思考这样的问题 :如何发挥三峡水库的调水功能 ,以三峡水库作为水源地 ,调水穿过巴山、秦岭向华北、西北地区供水 ,实现长江、黄河、海河水资源的合理配置 ,支援西部大开发 ,为国家的经济建设服务 ,充分发挥三峡工程的综合效益。国务院三峡工程建设委员会办公室组织国内水利水电、铁道等行业的一些资深专家 ,借鉴和参考有关单位几十年来对长江、黄河、海河流域的研究成果 ;南水北调工程规划资料 ;巴山、秦岭地…     

三峡工程防洪与调度

概述了三峡工程在长江流域防洪中的重要地位,简要介绍了《三峡水库优化调度方案》,结合2010年三峡工程实际防洪调度运行,分析了三峡工程的防洪调度效果,探讨了与水库防洪调度相关的几个问题,并对今后的工作提出建议。     

三峡工程对鄱阳湖候鸟保护区的影响及对策探讨

该文从分析三峡工程对鄱阳湖水环境的影响入手,着重论述三峡水库运行对鄱阳湖候鸟保护区生态环境的影响,并提出有关的对策和措施建议.     

三峡库水位变化对石榴树包滑坡安全性的影响研究

石榴树包滑坡为三峡库区黄腊石滑坡群的组成部分,为一复活性滑坡,三峡工程运行期库水位的升降变化可能会引起该坡体的失稳,从而影响长江航道的正常运行,甚至威胁三峡工程的安全.本文通过动态数值模拟计算,得到了三峡水库运行期各水位工况下石榴树包滑坡体的渗流场及其变化规律、抗滑稳定安全系数及其变化规律、变形特征,并通过综合比较分析,对三峡水库各水位工况下该滑坡体的安全性作出了综合评价,并给出了其重点监测时段及监测部位的建议.     

三峡库湾香溪河生态环境研究进展

香溪河流域系长江三峡水库湖北省库区最大的支流,三峡水库蓄水后,形成了库区首段回水顶托的缓流库湾,因而改变了水动力学参数,使该支流的生态环境也发生了改变.综述了三峡库湾香溪河在三峡工程蓄水前后的水体及库岸生态环境的变化,引用参考文献27篇.     

三峡工程的地质勘察研究与地质灾害防治

长江三峡水利枢纽工程的规模、效益巨大,地质条件比较复杂。地质工作在坝址选择,坝区重大地质、地震问题研究和库区地质灾害防治中发挥了重要作用。根据多年来三峡工程地质勘察研究和三峡库区地质灾害防治工作的实践,分阶段阐明了三峡工程地质勘察的主要成果和三峡水库移民区地质灾害防治工作的基本做法及主要经验。     

三峡工程与鄱阳湖区重要城市防洪

该文以三峡工程影响鄱阳湖水位为基础,从分析九江市,南昌市防洪现状出发,研究了三峡水库５月和６月上旬增泄流量对九江,南昌两市防洪的影响。     

三峡工程论证决策过程及其实践检验

举世瞩目的三峡水利枢纽工程是世界上规模最大的水电站,也是中国有史以来建设的最大型水利水电工程。2010年10月26日,三峡水库蓄水首次达到设计水位175 m,这标志着其防洪、发电、航运等各项功能达到设计要求。三峡工程从构想、论证、设计、建设至竣工全面投入运行历时近百年。当初兴建三峡工程的构想是如何提出的？三峡工程究竟起什么作用？存在什么分歧意见？是如何进行论证的？论证的结论怎样？这是许多人关心而又不太了解的,笔者在文中做了扼要的介绍,以纪念世纪之梦的实现。     

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.     

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     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with