"数字小流域"构建的理论与方法

在数字小流域构建的理论、技术背景及可行性分析的基础上，提出了数字小流域构建的总体模式，并从框架结构、基本功能等方面对数字小流域构建的技术方法进行了探索．根据数字地球的基本概念，从小流域信息化建设出发对数字小流域发展的三个阶段等进行了设想；指出实现数据共享与综合分析，为小流域综合治理提供科学的技术平台和决策依据是数字小流域实现的最终目标．     

三江平原低山丘陵小流域主要自然地理过程对水土资源的影响

冻融作用和流水作用是新丰沟小流域中最明显的自然地理过程。在古今冰缘地貌过程和现代流水过程的作用下，新丰沟小流域形成耻有长大坡积裙的宽平谷地。地形的垂直分化，导致了局地气候、水文条件及土壤类型的相应分化，从而形成了具有不同生产潜力和不同利用方向的土地类型。     

五洞桥小流域水土保持综合治理研究

从持续发展角度，阐述了水土保持综合治理的指导思想。在分析五洞桥小流域地理、社会经济条件和水土流失现状的基础上，建立了水土保持综合治理的资源开发，生态环境治理和社会经济发展的目标，提出了实现这些目标的基本途径。     

论山区水流域综合治理

本文提出了小流域治理应综合进行，即将水土保持和农林牧开发组相结合，消极治理与积极开发相结合，生态意义和经济意义相结合，森林防火中的以火防火等；并着重论述了小流域区根据坡面径流作用和水上流失状况来带综合开发治理，合理安排生产与保护等新观点。     

浅谈小流域走向市场需要解决的问题

小流域作为农村经济的一个生产单元在整个生产经营过程中，自然会受到当地大农业发展趋势的影响和现行农村产业政策的约束。当经营者获得小流域开发治理使用权和经营者自主权以后，只实现了小流域走向市场的第一步。要使小流域经济沿着市场经济的轨道运行，还有许多问题需要解决。比如计划经济向市场经济转换的过程中，人们思想观念的转变问题；小流域经济开发应遵循的原则和需处理好几个关系；小流域经营方向；社会服务体系建设；政府部门在宏观调控上的保障措施等等。结合社会主义市场经济理论的学习，谈谈对该问题的认识体会。一、市场经…     

山区小流域景观生态特征与景观生态建设

山区小流域由于人类干扰严重，造成水土流失和景观破碎化严重，生态环境脆弱．在对山区小流域景现生态特征分析的基础上，提出了小流域景观建设应依据不同景观功能区的特征，集中于绿色景观建设，大力推行植树造林，增加大斑块和绿色廊道的面积．并以河南省淅川县铁瓦河小流域为例进行分析。     

贫困山区小流域土地资源综合开发利用模式研究：——以 …

本文以具有云贵高原贫困山区代表性和典型性的砜瓦小流域为例，在简要分析了流域自然经济状况的基础上，设计出小流域分水岭区、坡地区和沟谷区土资源综合开发利用优化模式。     

山区小流域土地资源综合开发优化模型设计：以云南省 …

本言语充具有云贵高原贫困山区代表性和典型性的砚瓦小流域为便，在对自然资源及社会经济状况调查的基础上，根据农业系统工程的原理，运用线性规划理论和方法，采用流域综合规划的有关参数，建立了砚瓦小流域土地资源综合开发利用的优化模型。     

浅谈山区小流域水电建设项目的梯级开发

随着山区小水电开发的不断深入，开发方式和开发理念也在不断发生变化，针对小流域的特点，提出了水电梯级开发中应考虑的一些问题和对策。     

商城县铁佛寺小流域综合开发治理研究

铁佛寺小流域综合开发治理区，在河南北亚热带丘陵山区具有一定的代表性。本项研究为大别山区相对高差大、人口密度较高、水土流失严重的花岗岩中低山区开发治理探索出科学、有效的途径和模式。采取的总体策略和综合措施，适宜在类似区域或较大范围内推广应用，具有实践意义。     

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.     

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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