广州市地铁站地下商业内部空间结构分析

选取地铁站地下商贸资源的开发利用为研究对象,通过实地调查,对地铁沿线地下商业中心的规模、职能构成、行业构成及业态构成进行了深入分析,总结出不同级别地下商业区构成的基本情况.参照以往学者的研究,根据商业区商业网点的数目和分布形态对其布局结构和空间形态进行了分类,将其划分为“回”字式、单轴式、层叠式3种结构和与此对应的斑状型、块状型、立体型3种空间形态.基于以上研究,有利于对比各站点的地下商业开发利用水平,为解决资源闲置,调整地下商业区的规模提供指导意见.     

溧阳水电站地下厂房开挖破坏机理数值模拟研究

为研究溧阳水电站地下洞室开挖围岩稳定性,以地下厂房开挖时提供的地质条件和勘察资料为基础,结合完整岩块的强度试验成果,采用颗粒流数值模拟方法研究厂房在破碎岩体中开挖的破坏机理.研究表明,颗粒离散元方法可以较好地模拟地下洞室开挖情况;联合开挖时,出现明显的贯通变形区,且并非距离开挖面越近围岩变形越大;厂房开挖破坏模式为岩体结构控制型破坏,其导致围岩破坏的决定性因素是岩体结构特征.     

地热资源开发中水的控制作用研究

世界上绝大多数的地热能开发是利用其产生的热水或热汽.文章通过研究对流循环型、传导埋藏型地下热水系统等天然地热资源的特征及利用模式,探索热干岩型地热资源通过深地钻探、水力碎裂等"人工激发"途径加以利用的可行性.     

地下水位循环变化中下卧粉砂层地下车库抗浮数值模拟

沿海多降雨地区,需要考虑地下水位线变化过程中对于地下车库的影响.当下卧砂质粉土层或砂层,地下水位线的变化对车库底板的影响更大.目前为止,在国内,对于考虑地下水位线循环变化过程中,下卧粉砂层地下车库抗浮数值模拟的研究非常少.利用有限元分析方法,以山东东营市某地下车库为例,建立了水位循环变化对车库影响的计算模型.通过计算分析得到地下水位线变化过程中,底板和承台的应力变化、沉降变化及两者接触处的受力情况.最后,提出了减少地下水位线循环变化对地下车库影响的建议.     

循环经济视角下企业绿色成本管理研究

循环经济是以最小化资源投入和污染排放、最大化废物利用为目标的资源循环利用经济发展模式.其显著的特征是以可持续发展战略为基础,追求经济效益和社会效益的最大化的同时,创建环境友好型生产与消费方式.通过研究循环经济发展视角下企业绿色成本的构成和核算方法,尝试构建企业绿色成本管理模式,有利于促进企业创新成本管理,实现经济效益、生态效益、社会效益的和谐统一.     

海东市平安区张其寨地热田水化学特征及其成因分析

为了研究青海省海东市平安区张其寨地热田水化学特征及其成因,对祁家川流域地下热水采集样品进行测试,采用Piper三线图、兰格利厄—路德维金图解、14C测年、钠氯系数、加氯系数、脱硫系数等评价方法对地热田地下热水的水化学特征、补给源、年龄、水化学成因等进行了研究分析。结果表明:(1)张其寨地热田地下热水中阳离子以Na+为主,阴离子以Cl-为主,水化学类型为Cl-Na型。主要源于南部山区大气降水入渗补给,为深部循环的地下热水,年龄大于43. 5 ka。(2)地下热水钠氯系数[r(Na)/r(Cl)]为1. 003,加氯系数[r(Cl)/r(SO4+HCO3+CO3)]为15. 356,脱硫系数[r(SO4)/r(SO4+Cl)]为0. 043,主要受岩盐层的溶滤作用,具有埋藏深度大,封闭程度高,变质程度强烈等特点。可作为地热田可持续开发利用的水文地球化学依据。     

循环经济与农业可持续发展

合理利用资源是农业可持续发展的基础.作为一种全新的替代机制,农业循环经济能有效地利用资源和保护生态环境,促进农业经济增长方式的转变,从而实现农业的可持续发展.而废弃物资源化循环利用模式、"四位一体"集成化循环模式、立体农业高效型循环模式、结构优化产业链循环模式是目前比较典型的四种农业循环经济技术途径.     

基于多核心城市结构布局的地下综合体

总结了我国地下空间开发的现状,分析了地下综合体在城市空间中的作用,以及地下综合体开发的建设模式.结果表明：结合城市轨道交通发展的契机,建设与轨道交通站点相结合的地下综合体,可以有效促进区域经济发展,加速城市多核多心结构布局的形成,解决我国“城市综合症”;而采用地下综合体一体化建设模式的经济和社会效益具有明显优势,符合我国建设资源节约型、环境友好型社会的要求.     

循环冲击载荷作用下砂岩破坏模式及其机理

利用岩石动静组合加载SHPB试验装置对不同静载砂岩试件进行循环冲击试验,研究其破坏模式.在研究岩石试件界面摩擦力的基础上,对不同静载作用下岩石试件的应力状态进行分析.研究应力波斜入射到微裂纹时的作用效应,探索具有一定静载的岩石在循环冲击作用下的破裂机理.研究结果表明:对具有三轴静载的试件,应力波在其最大剪应力所在平面进行斜入射时优先破坏.在循环冲击载荷作用下,具有轴向静载的岩石在破坏过程中具有明显的端部效应,而没有轴向静载的岩石则没有端部效应;静载荷的组合形式对岩石在循环冲击作用时的破坏模式影响较大;无静载荷作用时,岩石在循环冲击时逐步破坏成几块,破裂面平行于纵向面,属于张应变破坏;只有轴向静载作用时,岩石试件第1次破坏形成共轭双曲线型破裂面,进而在入射界面处发生破坏,破坏都属于张剪破坏;具有三轴静载作用时,由于轴向静载的不同,岩石最终破坏成圆锥台、圆锥体和V型锥体,破坏属于拉剪破坏.     

共和盆地恰卜恰地区新近系地下热水化学特征

位于青藏高原东北缘的共和盆地地热资源丰富、种类齐全,既有中低温水热型,又有高温干热型地热资源,但两者间的相关关系研究目前还相对较弱。以共和盆地恰卜恰地区新近系地热系统为研究对象,通过选取对水样的分析估算深层地下热水水化学特征及热储温度、循环深度,从而推测研究区新近系地热系统的成因模式,探索干热型和水热型地热系统相互影响关系。分析结果表明：该区地下水优势阳离子为Na⁺,占比多超过90%,水化学类型主要为Na-Cl·HCO₃、Na-HCO₃·Cl或Na-Cl·HCO₃·SO₄,经过较长的径流路径和较慢的水循环过程,水岩作用程度较高,属地下水径流的末端或排泄区;通过化学温标估算研究区新近系热储温度为71～134℃,地下热水的循环深度为1 300～2 200 m,深于研究区花岗岩结晶基底顶面埋深;研究区新近系地热系统主要热源为深部高温干热岩体,新近系含水层地下水受深部高温花岗质岩体热传导导热加热升温,第四系地层为盖层,起到隔热保温作用,形成中低温地热系统。研究结论加深了干热岩地热系统对...     

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