排序方式: 共有29条查询结果,搜索用时 15 毫秒
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随着军事技术的不断发展,编队在海上遂行任务时面临的空中威胁日益严峻,对空防御作战是海上编队面临的最为重要的作战样式之一,这对编队对空作战能力提出了新的挑战。在研究美军CEC的基础上,文章介绍了编队对空防御作战的军事需求,阐述了编队对空防御作战体系,并研究了编队舰载雷达组网和舰载预警机参与下编队的对空防御作战能力。 相似文献
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多平台协同防空作战系统数据融合技术研究 总被引:1,自引:1,他引:0
对多平台协同防空作战系统的组成及功能作了简单介绍,指出数据融合单元的主要任务,对数据融合中的时间对准、空间统一、点迹排序及数据相关处理这四个关键技术进行了初步研究。 相似文献
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The notion of time-space prisms has often been used in the context of describing activity-travel patterns of individuals. This paper presents a methodology for estimating the temporal vertices of time-space prisms using the stochastic frontier modeling technique. Observed trip starting and ending times are used as dependent variables and socio-economic characteristics and commute characteristics serve as independent variables. The models are found to offer plausible results indicating that temporal vertices of time-space prisms, though unobservable, can be estimated based on temporal characteristics of observed activity-travel patterns. Comparisons of stochastic frontier models of prism vertices and the distributions of prism vertices are presented using two activity data sets collected in the United States – San Francisco and Miami. Differences and similarities in temporal vertex locations are highlighted in the paper. 相似文献
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Effective Public Participation is Fundamental for Marine Conservation—Lessons from a Large-Scale MPA
Jon C. Day 《Coastal management》2017,45(6):470-486
The Representative Areas Program (RAP) was, at the time, the most comprehensive process of community involvement and participatory planning for any environmental issue in Australia. The RAP was a key component of the widely acclaimed rezoning of the Great Barrier Reef Marine Park, and although completed in 2003, many lessons learned are still relevant today. This paper provides an analysis of the comprehensive public participation program that significantly influenced the final planning outcome. It provides insights into a fundamental component of effective marine planning, assessing what worked well and what did not in terms of public engagement. Some aspects of the public participation program were innovative, and some were more effective than others. The outcome was one-third of the Marine Park was declared as highly protected no-take zones in 2004, with the remainder of the park also zoned to provide lower levels of protection. The methods used to engage the public and the 25 lessons discussed in this paper should be of interest for practitioners, policy makers and academics elsewhere aiming for “good practice” approaches to achieve environmental conservation. 相似文献
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在舰艇的论证过程中,评价论证方案的好与坏或评比不同舰艇作战能力的强与弱,就要研究舰艇的作战能力评估。登陆舰艇与驱逐舰、护卫舰等作战舰艇的使命任务有本质的不同,所以不能完全采用作战舰艇的能力评估指标体系和评估方法对登陆舰艇进行评估。首先根据登陆舰艇的使命任务和特点,建立了登陆舰艇作战能力评估的指标体系,然后,采用作战模拟方法和层次分析方法对指标体系中的各级指标进行了计算,其次对作战模拟方法中的仿真模型和仿真平台设计进行了研究。 相似文献
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Joseph Cone Shawn Rowe Jenna Borberg Esperanza Stancioff Brian Doore Kristen Grant 《Coastal management》2013,41(4):345-360
Climate change poses known and unknown risks for coastal communities and also challenges for university faculty and local government staff who communicate about cli- mate sciences. Conceived as a way to move beyond traditional models of science communication, this project involved public and private decision makers in specific at-risk communities in Oregon (U.S. Pacific coast) and Maine (Atlantic coast). Both state projects sought to move behavior toward decisive action that results in coastal communities that are more resilient to climate variability at all scales. To promote engagement between project staffs and publics, a dialogic model of communication was advanced, beginning with interviews and focus groups that in turn shaped further engagement through workshops and targeted video products. This means of communication led to a deeper understanding of participants’ knowledge, beliefs, perceptions, values, and barriers to action related to climate change and its effects. Coinciding with this, project participant evaluations in both Oregon and Maine indicate that the workshops and videos were successful at informing them on this complex issue; and in both states, project participation led to action outcomes. We believe that applied elsewhere our multifaceted and adaptive approach will garner similar results, provided sufficient dedicated staffing and attention to methods. 相似文献