海水源热泵技术在港口建设中的应用

结合海水源热泵在大连港的应用情况介绍其技术原理、设备选型及其与传统空调系统相比较的优越性。     

MBR在处理船舶生活污水中的应用

结合船舶生活污水及现行处理工艺状况,介绍膜生物技术处理船舶生活污水的应用,分析膜生物技术处理船舶生活污水的效果、特点及其改进措施。     

我国船舶油污染损害赔偿机制的初探

随着我国社会的发展,特别是加入WTO后,贸易的频繁,通过海洋(包括入海开放河流)的货物运输量不断增加,在中国水域范围内的突发性严重船舶溢油事故因此也不断发生,给水域环境造成严重污染和国家财产造成重大损失。本文结合工作实际及当前国际公约和国内损害赔偿有关法律法规,分析了我国目前船舶油污染损害赔偿方面存在的问题,提出海事管理机构应在船舶污染损害赔偿中发挥重要作用,提出建立完善的油污损害赔偿机制等相关建议。     

基于相控阵列的噪声源识别及仿真研究

介绍了基于麦克风阵列进行噪声源识别的基本原理,采用相位延迟对噪声源空间进行扫描,确定声源的波达方向,进而识别声源的位置。利用计算机仿真技术模拟了空间两点声源产生的噪声,并利用该算法进行了声源位置识别。理论与仿真研究表明采用相控阵列能够识别噪声源的位置,同时能够获得不同噪声源的噪声大小和噪声贡献量,利用该方法可以对列车的运行噪声源进行分析。     

环境污染忧思灵：浅谈我国环境污染现状与可持续发展

较系统描述了我国目前大气、水和固体废物等对环境的污染。指出控制和减轻环境污染是我国可持续发展的基础性工作之一。     

电子垃圾现状及处理对策

随着电子电器数量的迅速增加，国外电子垃圾大量涌入我国，同时国内电子垃圾数量也日益增多，如果得不到及时、合理的处置，将会对环境和人类健康造成极大的危害。本文对国外及国内电子垃圾现状进行了综述，并且从几个方面分析了目前电子垃圾的处理对策。     

电子海图的显示精度分析

综合考虑了影响海图信息显示精度的主要误差源，对电子海图的显示精度进行分析和估算，并指出提高精度的方法和途径。     

一维单峰幅度非对称映象的标度因子

计算了z=4,6时的一维单峰幅度非对称映象的两个标度因子δ和a值。结果表明,它们都具有振荡行为,即交替地收敛到各自的两个常数c_1、c_2和d_1、d_2。对于固定的z值,c_1·c_2=δ~2,d_1·d_2=a~2。在聚点a~*处有c_1=c_2=δ,d_1=d_2=a。这里δ,a及a~*是一维单峰对称映象中相同z值下的标度因子值和聚点值。     

A block queueing system for slow moving traffic

A common cause of pollution and waste in urban areas is facilities which provide a continuous slow service for motor vehicles. As demand approaches supply, queues can develop and large numbers of engines can often be idling. Typical examples are car park entrances and drive through fast food outlets. This paper proposes a block queueing system to alleviate the problem without using excessive road space and with a minimum of extra infrastructure. The queue is divided into an active section at the front (with engines running) and a passive section at the rear (where drivers switch their engines off). Periodically, as the active queue becomes depleted, the passive queue is momentarily activated and a block of vehicles advances into the active queue. A visual cue can be provided to the drivers using a vehicle actuated traffic signal. It is readily apparent that drivers in the passive queue have to switch their engines on and off at regular intervals. Since this operation has an inherent cost in itself, this argues in favour of a large block size. However, large blocks mean more engines idling in the active queue. A compromise must be therefore reached for the likely range of queue lengths which the system under consideration exhibits. An expression is derived for the optimum block size in steady state conditions. It is shown that the potential benefits of the regime are considerable.     

实时悬点高度测量与放样研究

研究悬点高度测量与放样的原理、精度分析及其观测方法。