海上靶场角度量录取系统的研制

本文详细叙述了海上靶场角度量录取糸统的组成、测试原理及其功能设计，简要介绍了该系统在靶扬的应用情况．     

土工格室在生态防洪工程中的应用

河北省迁安市滦河生态防洪工程是河北省重点工程建设项目，在建设中采用土工格室生态护岸工程技术，不仅大大提高了工程建设的速度和质量，而且延长了堤坝使用寿命，减少了维护成本，收到了环保、生态等方面的综合效益。     

海缆护管后安装新工艺设计与应用

为解决海缆护管后安装过程中浮式起重船抛锚对平台周围海缆等带来的风险并降低护管安装成本,对比分析锚系船、动力定位船和平台后安装等3种方案,得出平台后安装方案在作业工期、费用、安全性方面具有较大的优势。对海缆护管平台后安装新工艺进行设计和理论分析,并通过实践验证安装。结果表明,该新工艺既能规避浮式起重船吊装作业的高风险,又能大幅降低作业成本,安装1根护管可节省船期3 d。该新工艺可为在役平台的海缆护管后安装提供重要的借鉴,有望在今后的类似工程项目中推广。     

塑造河流的性格——以郧西县城市河流生态景观规划为例

本文以郧西城市河流生态景观规划为例,论述了河流规划应突出其固有的个性特征,并通过河流驳岸的生态化改造和河流绿化规划,将生态与景观有效结合。     

Delivery of nutrients and seston from the Muskegon River Watershed to near shore Lake Michigan

Drowned river mouth lakes are major features of coastal Great Lakes habitats and may influence nutrient and organic matter contributions from watersheds to near shore coastal zones. In May through October 2003, we measured loads of nutrients, surficial sediment, and seston to track the delivery of riverine-derived materials from the lower Muskegon River Watershed (MRW) into the near shore area of southeast Lake Michigan. Nutrient flux data indicated that seasonal loads of 1800 metric tons (MT) of particulate organic carbon, 3400 MT of dissolved organic carbon, and 24 MT of total phosphorus were discharged from the lower Muskegon River, with approximately 33% of TP load and 53% of the POC load intercepted within the drowned river mouth terminus, Muskegon Lake. Carbon: phosphorus molar ratios of seston in Muskegon River (C:P = 187) and Muskegon Lake (C:P = 176) were lower than in Lake Michigan (C:P = 334), indicating phosphorus limitation of phytoplankton in near shore Lake Michigan. Isotopic signatures of seston collected in Muskegon Lake were depleted in δ¹³C (− 30.8 ± 1.6‰) relative to the isotope signatures of seston from Lake Michigan (− 26.2 ± 1.3‰) or the mouth of the Muskegon River (− 28.1 ± 0.5‰), likely due to the presence of biogenic methane in Muskegon Lake. Seston δ¹⁵N increased on a strong east-to-west gradient within Muskegon Lake, indicating significant microbial processing of nutrients. The extent of nutrient uptake in Muskegon Lake altered the chemical and isotopic characterization of seston flowing into Lake Michigan from Muskegon River.     

按沉降控制设计不均匀软土上的复合桩基I

为了经济有效的解决在深厚软土地基上地基变形过大,导致建筑物大量沉降,造成房屋开裂的工程问题,按照线弹性本构模型,提出了的一种关于复合桩基沉降的改进计算方法;结合具体工程实例,依据控制等沉降效应的原则,给出了一种桩基-复合桩基的地基处理方案,比较成功地解决了带有浜填土区段的软土上砖混住宅楼设计的难题.多年实测表明,计算结果比较符合实际.     

短肢剪力墙在小高层住宅楼中的应用

小高层住宅采用短肢剪力墙结构，可以不露墙柱，减轻重量，减小地震效应等优点：通过具体工程实际分析计算，合理的布置竖向结构，提高其侧向刚度和抗扭刚度，并针对性的构造加强，在7度地震区，小高层住宅采用短肢剪力墙结构，其抗震性能尚可。     

A new ship energy management algorithm to the smart electricity grid system

In this paper, a new energy management algorithm has been suggested for the ships connected with alternative energies considering the smart electricity grid features. The algorithm focuses on the use of optimum energy source on the shipboard based on the priorities of authorities such as the most economic, environmental, or both criteria at the ports. The algorithm is performed in MATLAB, and several case studies are simulated to validate the results. The 5 maritime nations, which are at different regions: United States, Belgium, Turkey, China, and Australia, are taken into account in the case studies. The actual data of a bulk carrier ship have been used to achieve tangible results in the simulations. The results of the case studies are compared to determine the changes of energy cost and released emission to meet demand of electricity on the ships. Capital cost of the proposed concept is also given to make an economic evaluation. The results show that the ship energy management algorithm provides the significant economic and environmental advantages. This paper aims to contribute to the importance of the ships in the smart electricity grid concept for the maritime and electricity sector representatives.     

基于CAN总线的码头岸电监控系统实时性分析

随着我国"节能减排"的势在必行,船舶靠港期间使用码头岸电以及岸电供给的智能监控已经成为当前的趋势,并正在大力推广。CAN总线在智能监控领域具有广阔的应用前景,在大型网络监控系统中,监控系统的实时性具有重要的意义。文章分析了CAN总线的实时性问题,针对CAN协议提出了仿真模型,实验测出延时数据,总结比较了当前几种基于TTCAN的算法优化问题。对于开发大型网络监控系统具有一定的现实参考意义。     

江岸回填高边坡施工质量问题分析

通过江岸回填高边坡工程施工实践,对出现的边坡崩塌、填筑体与母体分离以及面层空鼓等质量问题进行了分析,提出了确保边坡质量的控制重点。