上海城市森林评价指标体系

从森林可持续经营的标准与指标体系的研究、森林环境功能效益计量指标体系研究、林农复合生态系统评价指标体系的研究、森林生态体系总体和分类指标体系和标准的研究以及已有的城市森林相关的评价与指标体系研究共五个方面对国内外相关报道进行综述的基础上,提出城市森林评价体系PSR框架,并指出了今后城市森林此类研究的难点和需要努力的方向．     

区域旅游资源的分类和评价方法

依据区域旅游资源分类和评价方法的变化特点，将其方法的渐进发展过程分为5个时期，同时对不同时期分类评价方法的运用进行了综合评述，重点介绍了90年代以来的区域旅游资源的分类评价系统和方法，并展望了未来的动态发展趋势。     

遥感图像分类方法的研究

本文较全面地讨论了遥感图像监督分类和非监督分类中的各种分类方法，及该方法的优缺点、适用场合，并作了简单评价，以期对遥感图像分类方法的研究有新的突破．     

基于系统论的土地利用多功能分类及评价指标体系研究

基于系统论中要素–结构–功能原理, 对土地利用系统多功能进行系统识别和分类, 建立土地利用多功能分类体系; 从经济–社会–生态维度构建多尺度、多层次的土地利用多功能评价指标体系, 并对指标数据的获取和空间化方法进行初步探讨。结果表明, 土地利用多功能具有多层次性和区域性, 应针对不同的区域背景和研究尺度建立相应的分类与评价指标体系。将土地利用功能与土地利用结构相联系, 并将评价尺度延伸至地块这一微观尺度, 拓展和丰富了土地利用多功能研究的范围与内容, 为土地利用多功能研究提供新的思路和途径。     

机械制造工艺方法分类与编码系统

本文对我们所研究的《机械制造工艺方法分类与编码系统》的编码原理、分类原则、代码结构等作了系统的论述,以满足计算机辅助工艺设计和工艺管理的基本需要。     

基于遥感和GIS的景观分类研究--以安徽省为例

本以安徽省为例，探讨了地理信息系统在景观生态分类中的应用。中分类主要包括四个方面，第一，根据研究区特点及景观生态分类的实际需要确定分类的方法及各级指标体系；第二，对分类所需数据进行处理，提取分类所需的各种信息；第三，将各种信息综合叠加，得出景观分类系统，并做出研究区景观类型；第四，对分类结果进行评价，进而分析分类方法的优劣。研究结果表明遥感和GIS是景观生态分类的一种有效方法。     

GIS的信息分类

地理信息分类是地理信息系统（ＧＩＳ）信息编码的基础，在ＧＩＳ应用推广中具有控制性质的基础作用。研究和实验性检验证实：地理信息分类系统不能是现有的分类系统简单归并。据此，遵循地理信息分类和原则，结合云南省的实际情况，拟定了一个４级分类系统。它具有较强的系统性、科学性、可扩延性，消除了派生信息并保证了信息的基础性。它克服了现有系统中存在的问题，具有实用性。在这个信息分类系统基础上编制的信息代码码长短，     

平潭县植被的基本类型及其分类系统

本文论述了平潭县植被分类的原则与依据，植被分类的单位和系统。根据中国植被分类的原则和单位，将平潭县被划分为１０个植被型、２４个群系、６９个群丛。     

某炼油厂企业“MIS”信息分类编码设计的研究

本文对一个企业信息分类编码的原则和方法进行了较为详细地叙述，并结合炼油企业的计算机信息管理工业控制网络系统实际设计，提出了信息分类编码格式、含义和各种编码的使用说明，文中注意了信息分类编码的理论性和实用性两个原则，旨在对一个企业信息分类编码的原则方法和信息分类编码的具体实施方案两个侧面，介绍一下我们的工作。     

汽车测试评价规范分类与编码规则研究

依据CATARC汽车测试评价规范的管理和应用实践，将汽车测试评价规范对象按既定的原则进行分类编码，建立了CATARC汽车测试评价规范的分类编码标准及测试评价规范基础数据库，制定了《CATARC汽车测试评价规范编号和编码管理规则》。     

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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