武钢工业港原料码头料场物流系统均衡性模型的研究

在分析武钢工业港原料码头原料场和混匀场物流系统均衡性现状的基础上,构建了库存预警和混匀配比取矿均衡性模型,并采用规划软件LINGO9．0和VB6．0编程语言对该模型进行求解,最后以实际数据对该模型进行论证,加强了混匀配比的精确性和库存的合理性,优化了工业港原料码头料场物流系统的均衡性。     

全回转港作拖轮主机(日本大发6DL-28柴油机)排气及冷却水温度异常故障排除

针对烟台港某全回转港作拖轮其中一台主机(日本DAIHATSU 6DL-28)在全负荷运行中出现的个别气缸排气温度和冷却水温度过高的现象进行分析,并提出了解决方法,供以借鉴。     

深化船员培训、考试体制改革 提高船员综合素质

文中指出了《中华人民共和国船员培训管理规则》(交通运输部2009年10号令)为我国船员培训体制的改革奠定了基础,分析了我国目前船员培训、监管和考评体系改革的必要性,并通过对英国的职业教育模式和美国、菲律宾的船员考试监管模式的分析,提出了我国船员培训体制改革的新构想和船员考试、评估模式改革的新思路。     

三峡永久船闸对重庆航运的影响及对策

三峡永久船闸的建成,极大的改善了长江上游的航行条件,降低了船舶的运营成本,增强了水运同其他运输方式的竞争力,但是,由于现阶段各种条件远远达不到设计条件,造成船闸前船舶积压严重,船舶过闸等待时间过长等问题,增加了航运成本,影响了航运发展.本文介绍了目前的过闸现状及其影响,提出了一些解决方案.     

超声检测技术在舰船装备监测保障中的应用

超声检测技术是一门综合性的应用学科,在舰船装备监测保障中应用十分广泛,可为设备的维修、使用和管理提供有效的技术支持。文章简要介绍几种常用的超声检测技术及其在舰船装备监测保障中的应用。     

深圳孖洲岛友联船坞围堰抽水施工与位移沉降分析

深圳孖洲岛友联修船基地船坞堵口围堰采用沉箱式,基床厚度为0.5～9.0 m,在深基床内进行高压旋喷作防渗止水结构。在降水过程中,要确保围堰内水位平稳下降,避免基床产生突变;同时要观测渗水量,以检验防渗止水结构的效果;并对围堰的沉降位移进行观测,及时进行分析,以便指导施工。因此,在船坞围堰内降水时,保证围堰的稳定性是抽水中的首要问题。对这次抽水施工的若干问题如抽水方案、测定渗水量方法、沉降位移观测及分析等进行总结。     

Driving analytics using smartphones: Algorithms,comparisons and challenges

The present work investigates the use of smartphones as an alternative to gather data for driving behavior analysis. The proposed approach incorporates i. a device reorientation algorithm, which leverages gyroscope, accelerometer and GPS information, to correct the raw accelerometer data, and ii. a machine-learning framework based on rough set theory to identify rules and detect critical patterns solely based on the corrected accelerometer data. To evaluate the proposed framework, a series of driving experiments are conducted in both controlled and “free-driving” conditions. In all experiments, the smartphone can be freely positioned inside the subject vehicle. Findings indicate that the smartphone-based algorithms may accurately detect four distinct patterns (braking, acceleration, left cornering and right cornering) with an average accuracy comparable to other popular detection approaches based on data collected using a fixed position device.     

Microscopic driving theory with oscillatory congested states: Model and empirical verification

The essential distinction between the Fundamental Diagram Approach (FDA) and Kerner’s three-phase theory (KTPT) is the existence of a unique gap–speed (or flow–density) relationship in the former class. In order to verify this relationship, empirical data are analyzed with the following findings: (1) linear relationship between the actual space gap and speed can be identified when the speed difference between vehicles approximates zero; (2) vehicles accelerate or decelerate around the desired space gap most of the time. To explain these phenomena, we propose that, in congested traffic flow, the space gap between two vehicles will oscillate around the desired space gap in the deterministic limit. This assumption is formulated in terms of a cellular automaton. In contrast to FDA and KTPT, the new model does not have any congested steady-state solution. Simulations under periodic and open boundary conditions reproduce the empirical findings of KTPT. Calibrating and validating the model to detector data produces results that are better than that of previous studies.     

基于广义3S的公路安全评价数据采集方法探讨

本文以当前测绘行业比较热门的广义3S技术为基础,针对公路运营安全这一热点问题展开研究。内容涉及基于广义3S技术交通运营安全空间数据库的建立、基于广义3S技术的动态信息获取技术以及基于广义3S技术的动态交通运营安全后评价体系的建立等创新研究工作。     

提升ETC营业厅现场服务质量的探讨

提升ETC营业厅现场服务的主要目的是通过提升营业厅现场的服务管理水平,为客户提供规范优质的服务,优化客户感知,提高社会大众对ETC的认同度,从而树立ETC营业厅的良好社会形象.通过对国内ETC营业厅服务现状的分析,提出ETC“窗口”服务存在的问题与提升营业厅现场服务质量的一些想法,可为提升ETC营业厅服务水平提供参考.