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31.
为提升客户服务质量、提高资源利用率,建设用户资源管理系统,从而提高运行维护与设备管理的水平,工程建设、市场营销策略的科学性,实现效益经营。  相似文献   
32.
Abstract

This introductory piece traces the growth of knowledge and activity associated with visual resource management in general. A specific framework of questions regarding methods of coastal zone visual resource management is presented. The state‐of‐the‐art in methodological studies is listed for each question, and the methodological questions are related to the major articles with the special issue of the Coastal Zone Management Journal. Major legal federal statutes, state statutes, and court cases are reviewed in light of visual resource management in the coastal zone. The remaining articles within the special issue that deal with integration of VRM into decision‐making are then arrayed against a management framework. This framework includes regulatory situations for (1) public land management and planning, (2) public projects involving private lands, and (3) public regulation of private projects.  相似文献   
33.
PIC单片机应用系统可靠性技术研究   总被引:5,自引:0,他引:5  
PIC单片机在抗干扰、安全可靠性方面采取了许多措施.分析了PIC单片机应用系统中充分发挥其自身抗干扰作用的措施,通过编程序时增加必要的指令或程序可以投资少、见效快地提高系统可靠性.  相似文献   
34.
介绍了发动机性能模拟系统的分析和设计过程,发动机性能模拟系统主要是对发动机的工作过程进行模拟,这样在发动机方案设计过程中,就可以利用该系统来模拟某种方案下发动机工作过程并由此得到该议定可能出现的各种情况,便于改进发动机的设计。  相似文献   
35.
This article uses the Central Coast region of California as a case study to examine the challenges of protecting coastal ecosystems near areas of intensive agricultural production. Coastal water quality and biodiversity are greatly impacted by regional land use. Agricultural land use can have significant impacts on water quality through erosion and the runoff of agricultural chemicals. While the Central Coast region of California is a center for intensive agricultural production, it is also home to the largest marine sanctuary in the United States. This combination has resulted in intensive efforts from government agencies and conservation organizations to reduce pollution associated with agriculture. Efforts have focused on education and incentives, but are recently facing increasing challenges stemming from new standards created by the produce industry in response to food safety concerns. Personal interviews with crop growers were used to explore these challenges and to better understand the range of possible environmental impacts resulting from new food safety standards. Results indicate that substantial management changes are taking place that are likely to impact regional water quality and wildlife. This case study also explores the role of policy networks in shaping management decisions and illustrates how certain approaches to addressing agricultural pollution may be vulnerable to external policy changes.  相似文献   
36.
以桑托斯工程四标段C段浅滩的成功浚挖为例,重点分析了大型耙吸挖泥船在浅滩施工中的难点、要点及重点注意事项,并提出了相应的施工方案和保障措施,为类似大型耙吸挖泥船的浅滩切削施工提供了参考。  相似文献   
37.
针对非洲刚果(布)1号公路项目区域内的砂性土具有材料强度高、渗透性强,但表层砂性土松散,孔隙比大,压缩性高,且凝聚力差,在重载作用下易变形破坏,尤其是抗水流冲刷能力差等特点,提出了水泥处治、粘性土包边处理及竹编格栅植草防护等措施。  相似文献   
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