“一罐制”铁水调度优化模型的研究

铁水转运是钢铁生产的一个关键衔接环节,对控制钢铁生产节奏、保证产品质量起着极其重要的作用。钢铁生产新工艺的"一罐制"铁水运输,缩短了钢铁界面流程,使生产的刚性和连贯性增强,对铁水转运系统的要求更高,因此钢铁企业日益重视对铁水转运调度的研究。在对行车起重机+铁水车"一罐制"铁水转运和调度的研究基础上,分析了新工艺流程中铁水转运系统的特点,对钢铁生产的调度计划进行优化,建立了基于"一罐制"铁水转运多目标径路优化模型,并给出了模型算法。算法实现了新工艺下铁水物流运输的智能优化调度,使铁水运输趋于准点,降低生产能耗。     

“一罐制”铁水调度优化模型的研究

铁水转运是钢铁生产的一个关键衔接环节,对控制钢铁生产节奏、保证产品质量起着极其重要的作用。钢铁生产新工艺的"一罐制"铁水运输,缩短了钢铁界面流程,使生产的刚性和连贯性增强,对铁水转运系统的要求更高,因此钢铁企业日益重视对铁水转运调度的研究。在对行车起重机+铁水车"一罐制"铁水转运和调度的研究基础上,分析了新工艺流程中铁水转运系统的特点,对钢铁生产的调度计划进行优化,建立了基于"一罐制"铁水转运多目标径路优化模型,并给出了模型算法。算法实现了新工艺下铁水物流运输的智能优化调度,使铁水运输趋于准点,降低生产能耗。     

面向铁钢对应的铁水调度系统研究及应用

在对铁水调度现状进行详细分析的基础上,依据层次化的思想探讨了面向铁钢对应的铁水调度策略,提出了基于(案例)知识、数据、模型及人机交互四维一体的组合研究方法与系统综合集成架构,详尽阐述了面向铁钢对应的铁水调度中核心问题的功能与求解方法,讨论了系统的软件结构.将研发的面向铁钢对应的铁水调度软件应用于国内某大型钢铁企业铁水生产物流过程,取得了良好的应用效果.     

济钢狭小咽喉区域鱼雷罐运输调度组织研究

铁水运输是钢铁企业生产链上的重要环节。本文以济钢3200m3高炉鱼雷罐运输咽喉区域调度组织为研究对象,分析了咽喉区域调度组织状况,针对铁水鱼雷罐运输的特殊性设定了优先级规则,建立咽喉区鱼雷罐运输调度组织避碰规则和流程,解决了鱼雷罐运输区域狭小,咽喉区线路繁忙而造成的咽喉区交叉干扰与碰撞问题,提高了铁水运输效率,降低铁水温度损耗。     

钢厂铁水运输系统的计算机控制研究

本文的研究对象是某钢铁厂的铁水运输调度系统,该系统属于无停靠站台铁水运输调度系统．文中首先用事件驱动状态空间模型理论对系统进行了描述,并在此基础上提出了避免系统死锁的敌对进路事件合并法,随后结合敌对进路事件合并所引发的问题,提出了一种ＬｏｏｋｉｎｇＡｈｅａｄ调度规则,经仿真验证算法合理．     

钢厂铁水运输集中区列车控制模型的研究

针对某钢铁厂铁水运输集中区列车的运行问题，提出了一种用于调度控制列车运行的计算机模型结构－－区段预约动态链。在此基础上研究了列车的实时调度控制，针对路径选择问题，建立了基于整数０－１规划法的数学模型。仿真结果表最了这种模型结构的合理性和实用性。     

铁水运输系统智能仿真模型

研究了铁水运输系统的建模与仿真问题,建立了三层控制结构的智能运输仿真模型,基于OOCPN建立底层工位的状态演化模型,通过仿真进程控制层驱动调度决策层·利用消息传递机制沟通状态变迁与仿真策略之间的关系,利用分层调度和调度精化思想设计的调度决策专家系统和避碰决策专家系统有效模拟了现实系统中铁水运输调度员和机车司机的智能决策行为·仿真结果表明智能仿真模型为运输调度系统的建模与仿真提供了一种实用的解决方案·     

镍铁和钴铁水滑石的合成及结构差异的研究

采用低过饱和共沉淀法合成了物质的量比为2，3，4的镍铁和钴铁水滑石．XRD分析表明二者晶体结构相似，球分析表明稳定性：镍铁水滑石强于钴铁水滑石．     

热浸铁水脱硫法

提出用装有喷吹剂和脱硫剂混合物的钢管插入铁水中，利用喷吹剂受热分解产生气体形成的压力将脱硫剂喷射到铁水中进行铁水炉外脱硫的一种新方法———热浸铁水脱硫法，并从理论上对该法进行了可行性分析．     

铁水吹炼处理的试验研究

用Ｏ_２、Ｎ_２、Ａｒ气体对铁水进行吹炼处理，分析了吹炼处理的热力学与动力学原理，研究了吹炼处理的气体组成、吹气强度、吹气方式以及铁水温度对铁水成分与铸件质量的影响，并在３ｔ铁水包中对高炉铁水直接进行吹炼处理．研究结果表明，高炉铁水直接吹炼处理后可用于生产牌号铸件，明显提高铸件品质．     

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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