西部生态环境重建面临的严峻挑战

通过对西部地区生态环境问题的探讨 ,根据近 2 0年来西部地区生态环境恢复与重新研究的理论和实际 ,结合西部地区经济基础差、生产技术落后、经济水平低、贫困人口多 ,特别是恶劣的生态环境严重制约着西部经济快速发展的具体情况 ,科学的分析了西部大开发生态环境建设面临的水土流失、地质灾害、干旱、土地沙化、草场退化、环境污染等问题 ,提出了生态环境治理之对策 .     

西部大开发生态环境重建面临的严峻挑战

通过对西部地区生态环境问题的探讨，根据近20年来西部地区生态环境恢复与重新研究的理论和实际，结合西部地区经济基础差，生产技术落后，经济水平低，贫困人口多，特别是恶劣的生态环境严重制约着西部经济快速发展的具体情况，科学的分析了西部大开发生态环境建设面临的水土流失，地质灾害，干旱，土地沙化，草场退化，环境污染等问题，提出了生态环境治理之对策。     

西部城市燃气企业未来发展趋势

我国天然气能源消费中,西部地区生产量占全国的63.2%,能源消耗量占全国19.1%,中东部地区生产量占全国36.8%,能源消耗占全国的80.2%,中西部地区能源生产与消耗存在巨大的差异,甚至出现能源与消费倒挂现象:西部城市燃气企业未来面对如此巨大的地区能源消耗与生产差异,应如何发展?该文结合实际工作,探讨西部城市燃气企业未来发发展趋势。     

西部地区旅游企业电子商务应用探析

通过时西部地区旅游企业电子商务应用现状的SWOT分析,提出了适合西部地区旅游企业发展电子商务的一些对策.     

西部民族地区农林牧渔适宜性分析及生产功能分区

在中国西部民族地区,农林牧渔业所占GDP比重远高于全国平均水平,但其发展水平却十分落后,制约着西部的经济发展.为此,本文主要从自然条件和经济条件两方面对西部各地区农林牧渔生产的适宜性进行分析,从而得出西部民族地区的农林牧渔生产功能分区,并对其进行重要性分析,提出西部民族地区农林牧渔生产发展对策.     

西部高技术企业研发现状与地区差异分析

科学研究和试验发展是推动科技进步、促进企业发展的重要力量.针对西部地区自然资源富集、劳动力丰富,但经济发展又相对滞后的现状,对西部高技术企业的研发现状进行了概述,从研发经费支出、研发人员的投入、新产品销售收入以及专利数等方面进行了统计分析,并通过变差系数方法对西部地区研发经费资源的地区差异进行了对比分析.     

民族地区服务企业发展策略研究

民族地区基本上处于我国的西部，加入WTO和“西部大开发”战略的实施，为民族地区经济的发展带来了千载难逢的机遇。本文通过对民族地区服务企业所面临的机遇与挑战进行分析，提出了民族地区服务企业发展的策略。     

西部地区民营企业发展战略初探

本文首先比较了东部与西部民营企业的发展现状,分析了西部地区民营企业发展的机遇和挑战,针对西部民营企业在企业可持续发展战略层面,提出了相应的对策.     

技术进步与西部地区经济增长

要实现西部地区经济的飞速发展需要依靠科学技术的进步。利用C-D生产函数模型分析了西部地区的技术进步状况,并针对其存在的问题提出了发展西部经济的若干建议。     

西部地区民营企业发展战略初探

本文首先比较了东部与西部民营企业的发展现状,分析了西部地区民营企业发展的机遇和挑战,针对西部民营企业在企业可持续发展战略层面,提出了相应的对策。     

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     

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     

Journal of Donghua University ( English Edition) Contents of Volume 31

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