对海洋类高职院校办公管理的研究

高职院校办公室是整所学校机构的一个重要组成部门,是高职院校对内对外的重要文化窗口,也是学校的综合职能工作部门.它处在高职院校工作的中枢位置,是承上启下、联系左右、协调各方面的桥梁和纽带.高职院校办公管理工作,必须做到以人为本,以现代化科技管理促进办公室工作的良性发展.     

斜靠式系杆拱桥施工技术

结合义乌市丹溪大桥施工,介绍融合城市景观与交通功能为一体的斜靠式系杆拱桥梁部结构的主要施工技术,主要包括钢结构的制造、架设以及吊索安装等施工方法。     

公路沥青供应站沥青烟排放模拟及控制装置经济论证

以湖北省公路局应城沥青供应站储存罐沥青烟排放源为研究对象，用实验室模拟实验解决了低温和高温储存罐沥青烟自由排放速率过低难以测试的困难，从而确定了源强；将高、低温储存罐排放源综合成点源，用高斯模型计算了下风向沥青烟最大浓度及其出现的距离，发现最大浓度仍远低于保护农作物沥青烟浓度限值，提出了进一步严格沥青烟浓度限值的建议．另外，对高温输出罐的沥青烟控制装置——等离子体搅拌器进行了费一效论证分析，其效费比达1．29。     

“无单放货”的法律性质

在海运业务中,不论是国际公约、我国法律,还是国际惯例,均规定了承运人凭正本提单交货的法定义务。但由于种种原因,特别是近年来造船技术水平的提高,使得船舶在海上的航行时间大大缩短,而提单却因流转环节多,相对滞后,常常出现货已到港而收货人(提单持有人)尚未收到提单的情况。承运人考虑到客户的信誉和今后的合作,或者纯粹就是为了自己能够尽早交货,而违背凭正本提单交货的法定义务,在没有正本提单的情况下将货物交给收货人,承运人的这种放货行为称之为“无正本提单放货”,简称“无单放货”。     

基于盲源分离的设备状态监测与故障诊断

介绍了盲源分离(blind source separation,BSS)的相关理论和基本算法,阐述了盲源分离在设备状态监测与故障诊断的研究现状,重点讨论了它在源信号分离、特征提取、状态识别、源数目估计等方面的应用,指出将盲源分离应用于设备状态监测与故障诊断中需要深入研究的问题。     

渗锌钢筋在海工混凝土结构中应用的可行性研究

通过极化曲线、显微硬度试验、钢筋握裹强度试验以及现场工程试验对比,研究渗锌钢筋与普通钢筋的力学性能、耐蚀性能以及施工性能。结果表明,渗锌钢筋的硬度及其与混凝土的握裹强度均高于普通钢筋;渗锌钢筋和普通钢筋在混凝土模拟液中的稳定开路电位分别约为-0.9 V和-0.4 V,且均有稳定的钝化行为,但渗锌钢筋的钝化电位区间更宽,维钝电流密度和腐蚀电流密度也比普通钢筋大了一个数量级;渗锌钢筋在现场施工中具有良好的弯曲和焊接性能。渗锌钢筋可应用于海工混凝土构筑物中。     

Applying multiple kernel learning and support vector machine for solving the multicriteria and nonlinearity problems of traffic flow prediction

This article proposes to develop a prediction model for traffic flow using kernel learning methods such as support vector machine (SVM) and multiple kernel learning (MKL). Traffic flow prediction is a dynamic problem owing to its complex nature of multicriteria and nonlinearity. Influential factors of traffic flow were firstly investigated; five‐point scale and entropy methods were employed to transfer the qualitative factors into quantitative ones and rank these factors, respectively. Then, SVM and MKL‐based prediction models were developed, with the influential factors and the traffic flow as the input and output variables. The prediction capability of MKL was compared with SVM through a case study. It is proved that both the SVM and MKL perform well in prediction with regard to the accuracy rate and efficiency, and MKL is more preferable with a higher accuracy rate when under proper parameters setting. Therefore, MKL can enhance the decision‐making of traffic flow prediction. Copyright © 2012 John Wiley & Sons, Ltd.     

保宜高速公路建设信息化管理平台的构建与应用

阐述了高速公路建设信息化管理的概念和意义,介绍了湖北保宜高速公路信息化管理平台的总体架构与功能特点,具体介绍了征迁管理、资金管理、质量管理等三个子系统的结构组成、功能特点以及应用效果。     

螺旋钢桩抗拔特性的现场试验研究

根据螺旋钢桩现场抗拔试验中61根试验桩的监测数据绘制Q—S曲线,推算各类桩型的平均极限承载力,分析桩长、叶片数量、叶片间距、首层叶片埋深、叶片直径等参数对螺旋钢桩极限抗拔承载力的影响,试验结果表明螺旋钢桩的极限抗拔承载力随桩长和叶片直径而增加,叶片间距和首层叶片的埋深均存在临界点。分别通过慢速加载法和快速拉拔法测试螺旋钢桩桩极限抗拔承载力,快速拉拔法测得的极限承载力平均值约为慢速加载法极限承载力的2．0倍。     

Conflict Resolution through Negotiation in a Railway Open Access Market: a Multi-agent System Approach

Abstract

Open access reforms to railway regulations allow multiple train operators to provide rail services on a common infrastructure. As railway operations are now independently managed by different stakeholders, conflicts in operations may arise, and there have been attempts to derive an effective access charge regime so that these conflicts may be resolved. One approach is by direct negotiation between the infrastructure manager and the train service providers. Despite the substantial literature on the topic, few consider the benefits of employing computer simulation as an evaluation tool for railway operational activities such as access pricing. This article proposes a multi-agent system (MAS) framework for the railway open market and demonstrates its feasibility by modelling the negotiation between an infrastructure provider and a train service operator. Empirical results show that the model is capable of resolving operational conflicts according to market demand.