矿井运输系统动态仿真软件的研究

采用计算机仿真的方法来模拟整个矿井运输系统的运行情况，从而确定系统煤仓容量和系统的有效率。在软件中，实现了系统状态变化的老太太显示，提高了矿井运输系统仿真的直观性。     

矿井井下运输系统的动态模拟

为了便于分析矿车、原煤及物料等资源在井下的运行和流通情况,利用Microsoft Visu-al Studio 2005工具编写C＋＋控制台程序,对矿井井下运输系统加以动态模拟。通过调整井下运输系统的可控变量,如煤仓容量、矿车流、运输线路等,分析了不同参数下系统的运输能力。以滴道盛和煤矿立井为例进行模拟分析,结果表明：计算机模拟井下运输系统,能够发现其中的薄弱环节,为矿井运输系统的改造及能力优化提供技术支持。     

用仿SLAM网络模型模拟语言模拟矿井主采运系统

本文构造了矿井主采运系统的仿SLAM网络模拟模型,着重对轨道运输系统进行了研究,并对采区生产系统和大巷皮带运输系统作了简要介绍。最后,分析了王庄矿井主采运系统。图6,表3,参3。     

可视化计算机模拟与煤矿井底煤仓容量的核定研究

提出了可视化计算机模拟的概念，并以煤矿井底煤仓容量的核定为案例，介绍了可视化计算机模拟的优点，这为计算机模拟方法的应用开辟了一条新的途径。     

矿井生产运输系统的随机模拟

利用系统分析原理,以某矿井生产运输系统实际的数理统计为基础,对该系统各环节在数值计算机上作了动态的随机模拟,考察了不同参数条件下系统的运行过程,并在技术经济等方面对系统进行了综合分析。研究结果可为矿井生产运输系统的优化设计和科学管理提供决策依据。     

高集中化生产矿井采区煤仓退化的仿真分析

根据铁法晓南矿原东一采区的观测资料,利用计算机仿真技术模拟了采区出煤系统的运煤过程,讨论了采区系统各环节的可靠性与出煤生产的关系。从理论上证明了在高效单工作面生产的连续化运输系统中,采区煤仓的容量已经退化,采区的独立性也趋于淡化,进而推论出未来的矿井设计理念将会发生改变。     

计算机模糊模拟在井底煤仓容量核定中的应用

以计算机模糊模拟（ＣＦＳ）为基础，以煤矿井底煤仓容量的核定为案例，介绍了计算机模糊模拟的优点，这为计算机模拟方法的应用又开辟了一条新的途径。     

电机车最优台数的电子计算机模拟

煤矿井下运输水平,有N个装车站,一个井底车场,和M辆电机车承担着煤炭运输任务。在已知各装车站煤仓来煤规律和空、重列车运行时间、装煤调车时间的情况下,用电子计算机模拟方法,编写出电机车运行的模拟源程序。通过该程序可求出最优电机车台数和有关参数。文中针对现有设计,线性规划的计算方法和现场应用举了三个实例,并对电子计算机模拟结果进行了必要的比较和讨论。最后证明了这种方法有一定的优越性和实用价值。电子计算机模拟方法在国外矿井优化设计中应用较多,国内也在运输系统、煤仓容量、露天矿生产系统等应用了这种方法。这种方法用来求算井下电机车最优台数,比常用的计算方法速度快、准确,并可获得电机车运行情况的一系列参数。     

TPM管理法在钱营孜煤矿主运输系统的应用

井下原煤运输系统，是矿井实现生产连续进行的关键环节，该系统设备管理的水平．不仅决定了设备能否正常运转，还决定了设备能否达到设计使用寿命和长期经济运行。     

露天煤矿过无煤区留“岛”搭桥开采方案优化

针对露天矿田内出现无煤区,其上覆产生无效剥离量,为解决过渡无煤区期间生产剥采比增加、运距增大、煤量接续困难等问题,提出了一种露天煤矿过无煤区留“岛”开采新方法。系统研究了“岛”后搭桥、“岛”前滞后剥离的运输方式,优化留“岛”搭桥运输系统,动态模拟搭桥、拆桥衍变过程,提出过无煤区期间生产能力接续措施。研究成果在神华北电露天煤矿首采区过渡无煤区期间得到了应用,结果表明：对于露天矿田境界内出现无煤区,留“岛”开采方案有效降低了生产剥采比,“岛”后运输搭桥方式可减小运距,降低运输成本,提高矿山经济效益。     

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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