航母着舰引导系统概述

文章研究了舰载机着舰引导系统,论述了基于雷达引导系统和卫星导航的相对定位引导系统的特点,从三个方面分析了基于雷达技术的舰载机着舰引导体制的缺陷,并着眼于未来舰载机着舰技术的要求,提出了新一代多站定位引导系统,不仅能实现舰载机的快速精确定位测量,还可以将导航、防撞、通信、进近、着舰、复飞等一系列功能融为一体,为舰载机的导引控制和追尾触舰提供技术保障。     

舰载机目标分配及兵力引导仿真建模研究

目标分配和兵力引导是航母舰载机在对海突击作战过程中非常重要的环节,及时有效的进行目标分配和正确快速的兵力引导也是取得作战优势的重要保证。文章对航母舰载机对海作战行动中的目标分配和兵力引导进行了较为详尽的分析研究,为后续的航母舰载机整个对海作战过程的仿真建模工作做一些铺垫作用。     

亚丁湾水域交通特征分析及防海盗策略研究

亚丁湾是船只快捷往来于地中海和印度洋的必经之地,是世界上公认的黄金水道,是各国贸易和能源运输的重要航线,过往商船很多.根据航海图书资料和护航期间的观测,阐述了亚丁湾水域的自然环境条件.根据采集到的航经亚丁湾水域船舶的船载AIS信息,归结亚丁湾水域的交通规律,得出航经亚丁湾水域的船舶体现了大型化、专业化的特征.根据索马里海盗活动的情况,分析亚丁湾及附近水域海盗活动的特点和疑似海盗小艇的特征.针对航经亚丁湾水域的船舶情况,提出了船舶防海盗的策略.在实际的护航工作应用中,该策略措施对船舶防海盗和保证船舶安全通过亚丁湾水域发挥了积极的作用.     

船舶企业质量成本分析管理

通过质量成本管理,用货币的语言将质量问题量化,不断改进质量,提高顾客满意度。同时通过质量成本管理,量化评价公司质量管理体系的有效性,降低质量损失,提高企业的经济效益。     

Using vehicle simulations to understand strategies for accommodating oversize,overweight vehicles at roundabouts

There is considerable evidence that roundabouts are the safest and most efficient form of traffic control for most intersections. The potential use of roundabouts with all their inherent benefits may be greatly diminished if they are not able to accommodate oversize/overweight (OSOW) vehicles, sometimes called “Superloads.” The problem, therefore, is how to accommodate OSOW vehicles without sacrificing the integrity, safety and other benefits of roundabouts.This study uses TORUS software to design six standard roundabouts using guidance from the latest Federal Highway Administration (FHWA) roundabout guide. Six OSOW check vehicles from the Wisconsin Department of Transportation’s library were used to modify the designs to accommodate these selected check vehicles at the roundabouts. These six OSOW check vehicles were used to conduct swept path analysis using AutoTURN software at the selected six standard roundabouts for right turn, through, and left turn simulations. The space requirements for these maneuvers were analyzed in detail. Various strategies for better accommodating these OSOW check vehicles were suggested and experimented with in this study using AutoTURN software simulations. The effectiveness of using a straight passage through the center island for OSOW vehicles was also addressed in this study and was found to be effective. All the strategies investigated in this study proved to be effective in accommodating OSOW vehicles when compared to conventional ways of using a roundabout. The needed total truck apron was calculated and used as a reference to determine an effective strategy for accommodating OSOW vehicles. This research can be used as guidance for transportation engineers, planners and decision makers to determine possible ways of designing a roundabout at an intersection where certain OSOW vehicles are expected.     

广东省道路客运同线经营的竞合分析

文中在简述道路客运的发展历史和未来态势的基础上，论述了道路客运从竞争走向合作所带来的增益，指出了从竞争走向合作的策略与措施。     

高等职业院校发展规划编制工作若干问题的思考

发展规划编制工作是高等职业院校实施战略管理的基础性工作,需要科学设计与统筹管理。本文梳理了高等学校战略规划的演进,分析了高职院校战略规划编制的过程模式,就发展规划编制工作的若干问题的有效解析提出了管理建议。     

Improvement actions for reducing transport’s impact on climate: A shipper’s perspective

The purpose of this paper is to compare improvement actions for reducing transport’s impact on climate from the shipper’s perspective. To that end, it introduces an evaluation tool for comparing improvement actions in transport systems in terms of transport costs, impact on climate, and barriers to implementation. Within the context of five international flows involving a food producer, three actions—namely, engaging intermodal transport, increasing load factors by double-stacking pallets, and using high-capacity vehicles—were evaluated. Shipment data were collected to calculate reductions in transport costs and impact on climate, whereas interviews with the food producer were conducted to identify barriers. Results showed that reductions in transport costs and impact on climate attributed to the improvement actions differed among the five flows. Engaging intermodal transport reduced the system’s impact on climate by 27–53%, double-stacking pallets by 0–23%, and using high-capacity vehicles by 7–15%, with differences primarily due to different freight densities. Concerning barriers to implementation, the improvement actions also varied by flow. Altogether, unlike other papers, which have examined improvement actions separately, this paper offers an evaluation tool for comparing several improvement actions at once, as applied to a particular empirical case. Shippers with multiple flows and several possible improvement actions can use the evaluation tool to efficiently reduce their systems’ impact on climate.     

基于动力松弛法的悬索桥主缆找形方法及其应用

大跨度悬索结构在施工过程中没有施加初始张拉力,在荷载作用下结构将产生较大变形,该结构在荷载作用下的找形计算方法一般是基于解析计算方法或有限元非线性迭代算法,且这2种方法在悬索桥领域得到了很好运用。但上述2大类方法都是基于静力计算理论进行索结构找形计算,将适用于建筑领域索网结构找形的基于动力学理论和有限差分理论的动力松弛方法运用于悬索结构的找形,并编写了找形计算程序。算例表明,该方法得到的找形结果与解析算法及有限元迭代算法得到的结果高度接近,而且程序的收敛速度更快,计算稳定性好。为悬索桥主缆结构找形提供了一种新的思路。     

新型船用冷藏装置对菠菜保鲜效果的试验研究

本文通过记录菠菜45天的冷藏保鲜试验过程,以及试验期间菠菜各项营养成份的测试,验证了采用精确控温技术的新型船用冷藏装置的良好保鲜效果。与传统船用冷藏装置相比,其保鲜时间延长了一倍以上,是船用冷藏技术的一次重大改进。