海南省内河航运建设发展规划实施对水环境影响研究

运用GIS技术,把海南省区域水环境功能区划图、水质目标图与海南省航运规划布局图等相叠加,将受内河航运规划影响的河流划分为高、中、低三类敏感度水体,进而分析海南省内河航运建设规划实施对水环境的影响途径与范围,以及具体航运工程对上述三类敏感度水体的影响程度,提出了航运工程实施对水源地和其他敏感水环境的保护开发措施。     

9000 HP绿色环保型海洋平台供应船设计与研究

介绍在建9 000 HP海洋平台供应船设计中对主尺度、总布置、型线设计、电力推进系统、燃油驳运及货油输送系统、甲醇系统、对外消防系统,以及动力定位系统等设计技术问题的处理.     

三峡成库后库区码头基础形式分析及研究展望

三峡工程蓄水后库区码头建设面临异常复杂的水文环境和特殊的地质环境,码头基础设计和施工技术已经成为影响库区码头建设的瓶颈及技术关键。在全面调查分析库区码头建设的水文和地质条件基础上,系统总结并分析了库区码头常用5种基础形式的适用特点以及成库后存在的问题,并提出成库后码头基础形式的进一步研究思路,可为库区码头基础设计研究提供参考。     

卫星通信地球站电磁环境测试方法研究

为了更好指导卫星地球站建设,避免建成后受到有害电磁干扰,系统讨论了卫星地球站电磁干扰的测量方法,并通过实例详细介绍了测试过程,其具体测试过程可作为实际工程参考。     

信息化海战场中SEH作战能力特点及环境影响研究

信息化海战场的复杂性决定了提高水面舰艇编队早期预警能力的重要性,文章主要分析了舰载预警直升机的7个基本作战能力特点,并从海战场自然环境、电磁环境以及威胁环境等三个方面出发,探讨了信息化海战场环境因素对舰载预警直升机作战使用的影响机制和原理。     

美国海军全舰计算环境发展及关键技术

全舰计算环境是新一代舰载系统集成技术,对舰艇平台信息化具有重要意义和影响,是“网络中心战”在单个舰艇平台上的具体体现,也是舰艇平台信息化技术迈向“网络中心战”的一个重要里程碑。本文对全舰计算环境的发展情况、体系结构和主要技术进行介绍。     

Effects of sediment resuspension on organic matter processing in coastal environments: A simulation model

A model, constructed using STELLA™, was used to simulate changes in standing stocks and flows of organic matter resulting from sediment resuspension in shallow coastal environments. Previous studies suggested that resuspension may determine the sites and rates of organic matter mineralization in shallow environments (Hopkinson, 1985, 1987). Those studies predicted that resuspended organic material could exert an enhanced demand on dissolved oxygen. Our model results support this hypothesis. Total system metabolism receives increasing contributions from the water column as settling rate decreases. Water column respiration also increases relative to benthic respiration as the frequency and intensity of resuspension events increases. This is driven by higher specific degradation rates in the water column than in the benthic environment. Furthermore, overall respiration (benthic + pelagic) increases in response to resuspension.     

南京长江路历史文化街拓宽改造工程

南京市长江路是南京的一条历史文化街 ,原有路幅狭窄、交通拥堵、环境差乱。通过拓宽改造和整治 ,成为既有浓郁的历史底蕴 ,又有现代文化内涵 ,集游览、教育、休闲、鉴赏于一身的文化街区     

多Agent的船舶电力系统网络重构技术

Reconfigurability of the electrical network in a shipboard power system (SPS) after its failure is central to the restoration of power supply and improves survivability of an SPS. The navigational process creates a sequence of different operating conditions. The priority of some loads differs in changing operating conditions. After analyzing characteristics of typical SPS, a model was developed used a grade III switchboard and an environmental prioritizing agent (EPA) algorithm. This algorithm was chosen as it is logically and physically decentralized as well as multi-agent oriented. The EPA algorithm was used to decide on the dynamic load priority, then it selected the means to best meet the maximum power supply load. The simulation results showed that higher priority loads were the first to be restored. The system satisfied all necessary constraints, demonstrating the effectiveness and validity of the proposed method.     

湛江港30万t级散货码头建设对通航环境的影响

分析霞山港区拟建设的30万t级散货码头对通航环境的改变和影响,针对交通流量变化、水域变化、水工设施的变化提出相应的通航安全措施。