高速公路交通数据上报系统的研究与开发

在对高速公路交通数据上报系统的需求分析的基础上，给出了数据上报系统的架构和操作流程，并使用Socket和FTP传输技术，实现了高速公路观测站交通信息向交通部公路交通信息中心的实时数据上报和24h数据上报。该系统已经得到应用，并取得了良好的效果。     

机械复合管在海底管道中的应用

原油、湿气含有CO2或H2S是造成海底管道内腐蚀失效的主要原因之一。机械复合管作为一种新型管材,可以有效解决CO2或H2S造成的内腐蚀问题,在国际上得到了广泛应用,但其在国内油气田开发海底管道中,尚无应用先例。文中介绍了机械复合管的制造原理、设计制造规范、用作海底管道的技术要求、海上安装技术特点以及应用前景。文中研究了机械复合管在海底管道中应用对设计制造和安装技术的要求,以推动其在国内油气田开发海底管道中的应用。     

运用微机监测道岔电流曲线分析提速道岔故障

S700K电动转辙机正常道岔动作电流曲线与故障情况下动作电流曲线的对比观察,能及时发现道岔存在的隐患,以便查明原因,有针对性地采取消除措施,有效地提高现场设备的运用质量。     

The Necessity of Establishing a Regional Marine Research Program for the U.S. West Coast

The welfare of the marine environment of the U.S. West Coast of California, Oregon, and Washington is hindered by insufficient understanding of ecosystem dynamics and human pressures. Greater coordination, integration, and support of mutually identified research priorities across research organizations on the West Coast are necessary. This level of collaboration is essential to responding to regional ecosystem threats, such as the impacts of human occupation of coastal areas, over-harvesting of marine resources, and climate change. To address this need for collaboration and build on the accomplishments of existing research organizations, this article advocates the establishment of a West Coast regional marine research program (RMRP).     

散货船国际安全措施

本文简要分析了九十年代以来散货船海损事故及原因，回顾了几年来ＩＭＯ和Ｉ－ＡＣＳ寻求散货船安全措施的历程和合作，并提出还需解决的遗留问题及有关建议。     

基于C/S模式的分布式雷达情报传输系统的设计

针对目前雷达情报传输网中只能单向传输点迹和航迹情报,不能实现情报共享的问题,提出了基于C/S模式的分布式雷达情报传输系统的方案,用来实现多种情报的传输和共享,并对系统协议的选取和网络数据加密进行了分析.     

采用B／S模式来实现C／S模式下物资管理系统的优化

本文通过对C／S和B／S模式物资管理系统在使用中优缺点的分析，提出了采用以C／S模式为主，B／S模式为辅的混合模式对当前单一的C／S模式物资管理系统进行改造的设想。在这种混合模式下，物资管理部门内部采用C／S模式，便于实现复杂的管理功能及可靠的安全机制：对于非物资管理部门的用户，采用B／S模式，便于统一管理与维护。最后，本文还对系统改造的开发环境和技术做了探讨。     

Observations of the Fawn Trough Current over the Kerguelen Plateau from instrumented elephant seals

Due to its great meridional extent and relatively shallow depths, the Kerguelen Plateau constitutes a major barrier to the eastward flowing Antarctic Circumpolar Current in the Indian sector of the Southern Ocean. While most of the Antarctic Circumpolar Current transport is deflected north of the Kerguelen Islands, the remainder ( 50 Sv, 1 Sv = 10⁶ m³ s^− 1) must pass south of the islands, most probably through the Fawn and Princess Elizabeth Troughs. However, the paucity of finely resolved quasi-synoptic hydrographic data in this remote and infrequently sampled area has limited the progress in our knowledge of the regional circulation. Since 2004, a new approach using elephant seals from the Kerguelen Islands as autonomous oceanographic profilers has provided new information on the hydrography over the Kerguelen Plateau, covering the entire Antarctic Zone between the Polar Front and Antarctica, with a mean along-track resolution of about 25 km. These finely resolved bio-logged data revealed details of a strong northeastward current found across the Fawn Trough (sill depth: 2600 m; 56°S, 78°E). This so-called Fawn Trough Current transports cold Antarctic waters found mostly south of the Elan Bank, between the Ice Limit (58°S) and the Antarctic Divergence (64°S) in the eastern Enderby Basin, toward the Australian–Antarctic Basin. Our analysis also demonstrates that the Deep Western Boundary Current, which carries cold Antarctic water along the eastern flank of the southern Kerguelen Plateau collides with Fawn Trough Current at the outlet of the Fawn Trough sill. In other words, the Fawn Trough constitutes a veritable bottleneck, channelling the quasi-totality of the Antarctic Circumpolar flow found south of the Polar Front. Thanks to the unprecedented fine resolution of seal-borne data, a branch of flow centered at the Winter Water isotherm of 1 °C is also revealed along the northern escarpment of the Elan Bank, and then along the southern edge of Heard Island. Further analysis of different supplementary data reveals a complex circulation pattern in the entire Enderby Basin, with several distinctive branches of flow being strongly controlled by prominent topographic features such as the Southwest Indian Ridge, Conrad Rise, Elan Bank, and Kerguelen Plateau. This newly emerged frontal structure refines considerably previous large-scale circulation schematics of the area.     

系统架构浅析

ERP产品在对连锁企业系统架构支持上进行了较大的完善,为用户提供了多种系统部署方案,用户可根据自己的连锁管理模式、连锁体系布局、网络硬件环境等条件因素,选择适合的连锁系统架构。     

多相流试验台管道上弯管内流场分析

利用ANSYS软件中FLOTRAN CFD对多相流的弯管处流体流场进行建模、划分网格、加载,分析得出流体流经弯管处的压力分布图和速度矢量分布图。探寻流体在流经弯管时速度和压力的变化,找出造成压力损失的主要原因,并找到管道内易损坏的部位,为多相流系统的设计提供合理的依据。