图斑的矢量化方法

针对传统的图斑矢量化引起的面域交叉,对象撕裂等问题,研究了基于弧段图斑矢量化方法。并通过线状地物与图斑的叠合分析,建立线状地物与图斑拓扑关系,完成其属性信息的更新与图斑拓扑一致性的检验。实践证明该方法可以大大提高土地利用现状图矢量化的工作效率,确保土地利用数据的精度和质量,具有推广应用价值。     

土地利用变化信息自动提取方法

在深入研究了基于 3S 技术更新土地利用图件的方法基础上,从实用化的角度出发,建立了一套利用 3S 技术更新土地利用基础图件的技术流程与方法,并针对不同的数据情况和变化信息自动提取难等问题提出了基于土地利用图斑单元的知识库变化信息自动发现方法、多波段遥感影像交叉相关分析变化识别方法及面向对象的遥感影像分类变化检测方法。然后结合实验数据,对整个工艺流程进行了编程实现和试验验证。实验证明,更新方法在国土资源部的课题中得到证实是切实可行,并取得了一定的效益。     

土地利用现状调查与利用动态遥感监测系统的建立

本文介绍了利用卫星遥感影像图的光谱特征图斑核对土地利用现状详查资料,确定监测图斑的真伪、类型和范围,并进行了图斑面积对比及精度统计。介绍了土地信息数据入库的技术路线和工艺流程,质量控制及数据库管理系统的试运行。通过该系统的建立,在土地利用现状调查及建库中有所创新和突破。为合理的开发利用国有土地,保障耕地总量动态平衡,提高土地资源的科学规划,为建立"数字区域"、"数字山东"提供了翔实的依据;同时也为土地利用的基础数据查询、汇总、统计、分析、网络服务发挥了作用。     

基于遥感影像分割单元的土地利用变化快速检测方法

针对土地利用变化动态监测的实际业务需求,提出一种土地利用变化快速检测方法,即基于同一区域土地利用现状图与高分辨率遥感影像进行叠加分析,通过土地利用现状图图斑边界对高分辨率遥感影像进行分割,并对分割单元的像素灰度值进行统计分析,以此判断图斑内对应的土地利用是否发生变化,从而提取影像发生变化区域范围。以某城市局部区域土地利用变化监测为例,通过对该区域2013年高精度遥感影像与2012年土地利用现状图叠加分析,对938个图斑进行土地利用变化检测,发现变化图斑12个。其中,8个为实际发生变化图斑,4个为错判,无漏判。实验结果表明:该方法能快速、有效地实现土地利用变化信息的检测和提取,并适用于识别提取新增建设用地占用农林用地的情况。     

3S技术在土地利用更新调查中的应用

3S技术构成的动态对地观测体系为土地利用更新调查提供了坚实的技术支撑。在江西余干县的土地利用更新调查中，应用3S集成技术，设计合理的技术流程，解决实施过程中的关键问题，高效精确的完成项目，最终得到与实地相一致的成果资料和土地利用现状数据库，为土地数字化动态管理提供了基础资料。     

重庆一小时经济圈耕地适宜性评价研究——以长寿湖地区为例

协调好各类用地,是一小时经济圈率先实现城乡一体化的重要保证.以重庆长寿湖周边地区为例,利用遥感与GIS技术,借助地质、地球化学、遥感等多源信息,按照国内外相关规范,对参评数据定标分级,通过AHP方法,以土地的自然属性为基础,建立了一套土地适宜性评价指标体系,利用多指标决策模型对研究区耕地利用现状做了适宜性评价.在评价单元上采取了图斑叠置分析法与土地利用现状图斑为单元相结合的方法,以保证评价结果的科学性、实用性.通过评价结果与土地利用现状、野外实地调研的对比分析,对研究区的耕地利用情况作了定性和定量分析,并结合该区土地在一小时经济圈的发展方向对其土地规划提出了建议.结果表明,以土地的自然和社会双重属性为基础的土地评价与规划方法可为重庆一小时经济圈土地规划提供辅助决策支持.     

福建省土地资源遥感调查与分析研究

采用“3S”技术对福建省土地资源进行遥感调查,拟订了土地利用的分类系统,系统地建立了全省的判图标志,绘制了2001年的1:250000福建省土地利用现状图并更新其数据库,在此基础上,简要分析了福建省土地利用遥感调查面积与详查面积之间差异及原因．     

土地利用现状图缩编中的图斑选取及其实现

在土地利用现状图的缩编过程中,图斑选取的方法多种多样。本文分别采用资格法和定额法,对北京市朝阳区和密云县的土地利用现状图进行1∶5万到1∶10万缩编,并对不同方法的缩编结果进行评价。通过实例研究发现,与定额法相比,采用资格法进行土地利用现状图中面状图斑的选取,不能较好地保持土地利用结构;定额法中,整体选取的定额法稳定性较高,但不能兼顾每一地类的重要程度;在保持地类结构稳定性方面,分类选取的定额法在三种方法中最优,更为有效可行,为更好地实施土地利用现状图缩编提供参考     

基于3S的土地利用动态监测系统

为了克服传统的土地利用图件更新技术的弊端,从当前土地利用动态监测的实际要求出发,采用理论研究与系统开发相结合的方法,提出了基于"3S"技术的土地利用图件更新的总体方案,利用遥感技术快速发现变化的地块,用GPS快速准确地测定更新信息,最终在GIS环境下实现土地利用图件的更新,并开发了相应的土地利用动态监测原型系统.该方案投入小,效率高,对于市、县级土地监管部门快速准确掌握土地利用数据具有现实意义.     

3S技术在土地利用数据更新中的应用研究——以金昌市金川区为例

简要介绍了"3S"技术的当前发展现状,并以"3S"技术在金川区土地利用数据更新中的应用为例,论述了"3S"技术在土地利用数据更新方面的应用,并根据具体实践进行了进一步归纳总结。     

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