地铁屏蔽门环控系统的经济分析

简介地铁环境控制的三种模式,分析了屏蔽门模式环境控制的特性及负荷模拟计算,对三种地铁环境控制模式进行经济分析比较,分析表明屏蔽门模式经济性最佳.     

地铁通风空调系统的节能方案及应用效果分析

针对成都地铁某车站采用的空气-水系统、复合式屏蔽门系统、冷却塔供冷系统,详细阐述了这三种通风空调系统的原理,计算分析设备运行能耗及节能效果,为地铁通风空调系统设计提供了重要的参考依据。     

视景仿真的屏蔽门系统在地铁列控系统中的应用

研究了一种基于视景仿真的虚拟测试方法,并将其应用于地铁列车CBTC系统的仿真测试平台中,利用Multigen Creator及Vega软件构建车站、站台屏蔽门及列车的虚拟现实环境,在实验室模拟了地铁站台屏蔽门的工作,解决了CBTC系统开发工作对现场环境依赖过高的问题.     

地铁屏蔽门的机械设计及力学模型

提出了一种地铁屏蔽门的机械设计方案,该机械部件设计成4个模块化结构单元,下部支撑可三维调节、上部支撑可伸缩,阐述主要部件的构造和作用,研究屏蔽门承受的外荷载,提出工况组合及校核内容,采用板单元、梁单元组合假设来简化力学模型,设计方案可满足地铁车站对屏蔽门的特殊要求,力学模型反映了屏蔽门的实际工作状况。     

浅析地铁车站设计

简要论述城市轨道交通中地铁车站的设计原则、地铁车站类型和特点、车站内部布局、车站内部环境、及车站出入口和风亭的设计要点进行阐述。地铁建设作为满足我国目前经济建设与居民生活需要的可持续的交通解决方案具有很重要的意义。由于地铁是一项投资大、时间长的工程,在设计时应当认真分析,尽量减少投资,合理工期,使其更好的为我国经济建设发挥作用。     

城市轨道交通噪声监测研究

根据对广州地铁3号线、天津地铁1号线的列车车厢内部噪声水平的调查,本文探讨了列车车厢以及车站内环境噪声的来源。结果表明：地铁列车高速运行是地铁车站环境噪声的主要噪声源,地铁列车车厢内噪声除了与地铁线路质量、列车运行速度及地铁列车结构有关外,还与地铁列车内广播、乘客人数多少有关;车站屏蔽门能有效降低噪声。     

地铁BAS对通风空调的监控要求

本文主要分析了地铁环境与设备监控系统（BAS）对区间隧道通风系统、车站隧道通风系统、车站公共区通风空调系统（也称大系统）、设备用房通风空调系统（也称小系统）、空调水系统的监控要求,通过优化控制实现地铁的安全高效运行,提高地铁的服务质量。     

地铁站台屏蔽门渗漏风量计算与分析

首先对影响地铁站台屏蔽门渗漏风量的因素进行了总结分析,然后以广州地铁某岛式站台车站为例,使用通风网络和计算流体力学的方法进行分析,提出通过模拟计算求得屏蔽门漏风量的可行方法.     

商场建筑物节能改造技术对比分析

采用DeST建筑能耗分析软件,对某商场改造前后的建筑能耗以及空调系统用能的合理性进行讨论,在保证室内空气品质的条件下,改善建筑的热特性,全年可减少耗能1.93%,节省运行费用13.42万元;采用高效、变频控制、变新风量空调系统,可提高设备的用能效率,节能27.81%,节省运行费用178.09万元.通过对空调系统用能的评价,得出了商场节能改造重点在于空调系统改造的结论.     

亚热带地区地铁环控系统的工程实践和理论探讨

亚热带地区修建地铁，必须解决环境控制空调能耗大的难题。根据广州地区的气候特点和地铁建设工程实践，广州地铁研究建立了适合亚热带地区的地铁环境控制系统——应用站台屏蔽门的节能型环控系统，为低纬度地区的地铁建设提供了可持续发展的思路。     

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