射频识别(RFID)技术在集装箱车辆管理系统中的应用

针对在港口、码头、大坝的车辆管理系统中,应用RFID技术来控制车辆和货物的应用,码头港口车辆自动审查系统属于港口物流监控系统中,其目的是自动采集过关车辆信息与驾驶员信息。通过把港口物流监控系统中的集装箱车辆信息与驾驶员信息与采集时间、地点等因素相结合,通过数据库系统把货物进出口和转运报关资料自动审核,实现是否通关的判断和执行。     

计算机无线网络技术在港口集装箱作业环境中的应用

对计算机无线网络通讯技术在港口野外工作环境的应用进行了详细的讨论,并给出具体的解决技术方案.使得港口经营业务管理信息系统(MIS)在语音、视频和数据三合一的无线网络通讯平台上,将移动计算机终端拓展到港口码头前沿的作业现场.本方案解决了港口经营业务管理系统(MIS)信息处理的数据滞后和生产中断现象,提高了港口集装箱吞吐作业效率.     

计算机无线网络技术在港口集装箱作业环境中的应用

对计算机无线网络通讯技术在港口野外工作环境的应用进行了详细的讨论，并人出具体的解决技术方案。使得港口经营业务管理信息系统（MIS）在语音、视频和数据三合一的无线网络通讯平台上，将移动计算机终端拓展到港口码头前沿的作业现场，本方案解决了港口经营业务管理系统（MIS）信息处理的数据滞后和生产中断现象，提高了港口集装箱吞吐作业效率。     

基于差分进化算法的自动化集装箱码头AGV调度问题

[目的]自动化集装箱码头的水平运输作业是影响港口物流效率的关键环节,通过优化自动导引车(Automated guided vehicle,AGV)的任务分配,减少装卸作业的时间,提高港口生产效率.[方法]在同时考虑集装箱装卸作业的基础上,就AGV调度问题建立混合整数规划(MIP)模型,优化目标为极小化岸桥完工时间.考虑到该问题具有NP困难性,设计了离散差分进化(DDE)算法进行近似求解.[结果]通过数值仿真验证了MIP模型和DDE算法的有效性.[结论]结果表明上述模型和算法可以为自动化集装箱码头的装卸作业提供帮助.     

浅谈集装箱码头装卸设备管理系统的应用与完善

港口集装箱码头装卸设备的种类和数量较多,需随时实时监控,一旦发现设备有异常情况,应报告故障并组织维修,以保证码头设备运行良好。目前的设备管理体系显然已无法满足对码头装卸设备的要求,主要体现在现有系统对各装卸设备的运行状态无法监控,不能预测可能存在的故障隐患,并及时发出故障警报、提供修理方案。     

探讨现有岸边起重机使用情况分析及改进方法

随着港口建设的不断发展及纵向深化,大型集装箱船舶的装卸能力已经成为港口发展的关键环节,甚至成为现有港口提升改造的重点环节。现代集装箱船舶的发展已经步入大型化、高速化的领域当中,港口集装箱装卸效率的提升同样紧跟时代的脚步前进。处于京津冀城市群和环渤海经济圈交汇点的天津港,在国家自由贸易试验区以及先试先行等优惠政策的推动下,大型、超大型集装箱船舶越来越亲睐停靠华北区域最大港口,为天津的经济发展加油助力。同时矗立于码头上的岸边集装箱桥式起重机,已然形成了一道道独特的码头风景。     

港口车辆作业智能导引系统设计与实现

目前国内港口集疏运效率低、物流车辆管理技术手段落后、场内调度信息获取滞后等一系列问题,成为影响港口总体竞争力提高的瓶颈。因此,利用先进的技术手段提高港口车辆集疏运效率,对提高港口码头的生产管理水平及长远发展至关重要。该文以港口集疏运车辆作业为研究对象,综合利用网络与通信技术、GIS技术、移动定位技术、嵌入式终端开发等关键技术设计了港口车辆作业智能导引系统,实现基于智能终端的结合车辆作业流程的实时路径规划与导航和管理端的车辆实际行驶路径的自动纪录与综合查询。     

物联网环境下的智能矿石码头后方堆场研究

作为新兴战略产业之一,物联网发展迅速,并在智能矿石码头后方堆场的生产作业中得到了推广应用。搭建了合理的生产作业信息系统,通过物联网技术的感知设备和港口的网络系统,实现感知层、网络层、应用层、服务层间的自动可靠联通,避免信息孤岛,减少人员操作环节,提高了生产可靠性及生产效率,降低了人为失误。     

基于三维虚拟港口物流平台的实现

随着计算机仿真技术的应用和离散事情仿真系统的完善,使用计算机模拟集装箱码头装卸货流程的研究得到了广泛应用;但集装箱码头物流系统的研究多以二维创建系统,无法直观观察过程;以福建港口为案例,在研究福建港口吞吐量的同时,以离散事情仿真系统为理论基础建立数据模型,并对集装箱码头装卸货工艺做了研究和分析;最后使用Flxesmi中的数据分析软件建立数据模型,开发了三维的集装箱码头装卸货流程。     

基于灰靶模型的港口效率评价

选取泊位长度、码头面积、码头CFS、吊桥数量以及集装箱吞吐量5个集装箱港口绩效指标,选择中国实力相当的6个集装箱港口进行灰理论的靶心度分析,并以此进行评价排序.该方法有效解决以往研究中无法有效评价小样本、多指标的港口效率评价问题,而且该方法具有计算简便的优良特性.为港口在短时间内了解自身处境、制定发展战略提供依据.     

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.     

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     

Journal of Donghua University ( English Edition) Contents of Volume 31

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