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Research on Calculation Method of Wave Load and Mooring Force Based on Time Domain Potential Flow Theory 基于时域势流理论的波浪载荷和系泊力计算方法研究
Pub Date : 2019-01-01 DOI: 10.35248/2167-0374.19.9.180
Zhang Bao-Ji, Ning Ping-Bo, Z. Chi
In order to predict the wave force of moored ships quickly and accurately, based on the unsteady time domain flow theory, the calculation method of wave load and mooring force of LNG ship under full load and ballast conditions is studied. Through short-term forecasting and long-term forecasting, the wave bending moment and wave force of each cross section of the LNG ship, as well as the motion response of LNG ship which have the greatest influence on the wave load are obtained. Based on this, the wave force and motion response is performed, and the mooring point is set according to the actual environmental conditions when the LNG ship is moored at the dock. The mooring force of each cable that meets the specifications and the number of mooring lines required are finally obtained. The research results in this paper can provide a technical support for dock mooring setup and mooring force calculation for similar ship types.
为了快速准确地预测系泊船舶的波浪力,基于非定常时域流理论,研究了LNG船在满载和压载条件下的波浪力和系泊力的计算方法。通过短期预报和长期预报,得到LNG船各截面的波浪弯矩和波浪力,以及对波浪荷载影响最大的LNG船的运动响应。在此基础上,进行LNG船在码头停泊时的波浪力和运动响应,并根据实际环境条件设置系泊点。最后得到满足规范要求的每根缆绳的系泊力和所需的系泊线数。本文的研究成果可为同类船型的码头系泊设置和系泊力计算提供技术支持。
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引用次数: 1
Bio-Agro Defense Collaboration: The Need of Joint Leadership Education and Training of Strategic Analysts and Decision Makers 生物农业防御合作:战略分析家和决策者联合领导教育和培训的需要
Pub Date : 2015-09-10 DOI: 10.4172/2167-0374.1000131
R. Knutsson, Per-Åke Mårtensson, Erik Brattberg, Lars-Göran Hedström
Bioweapons deliberately spread to humans and animals is one of the most complex and intersectoral CBRNE threats. It requires multi-sectoral collaboration between law enforcement, public and animal health and in severe cases civil-military collaboration. By building a collaborative management culture between these sectors, through joint education, training and exercise activities, better methods and tools will be obtained in order to reach interoperability and an integrated preparedness approach. Lessons learned and experiences from previous projects, courses, workshops, and simulation exercises require a rationale knowledge transfer. Horison scanning is one example of a method that can be recommended to educate strategic analysts jointly from various sectors and the “Decision Theater” is a dynamic and flexible tool that is useful to train decision makers to examine complex bio-agro defense and biosecurity problems.
故意传播给人类和动物的生物武器是最复杂和跨部门的CBRNE威胁之一。它需要执法部门、公共卫生和动物卫生部门之间的多部门合作,在严重的情况下需要军民合作。通过联合教育、培训和演习活动,在这些部门之间建立协作管理文化,将获得更好的方法和工具,以实现互操作性和综合备灾办法。从以前的项目、课程、研讨会和模拟练习中吸取的教训和经验需要基本的知识转移。地平线扫描是一种可以推荐给各个部门联合教育战略分析师的方法的一个例子,“决策剧场”是一种动态和灵活的工具,有助于培训决策者检查复杂的生物农业防御和生物安全问题。
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引用次数: 2
Considerations on United States Navy Infrastructure Readiness 关于美国海军基础设施准备的考虑
Pub Date : 1900-01-01 DOI: 10.35248/2167-0374.19.9.181
Travis J Summers
The purpose of this qualitative grounded theory study was to examine the definition of infrastructure readiness in terms of Navy laboratories, and to define the best criteria or approach for effectively managing readiness to meet changing technical mission requirements. Through semi structured interviews with leadership about their perceived definition of infrastructure readiness and perceived adequacy of the current model, clarity emerged on the criteria for adequately defining, measuring, and assessing Navy laboratory infrastructure readiness. This will allow further evaluation of the existing system and identification of any gaps or risks. The primary goal of this study was to create an accurate definition of Navy laboratory infrastructure readiness, and subsequently, the key attributes to that readiness. The second goal of the study was to research other readiness systems to assess their readiness elements, and measures to determine the applicability to Navy laboratories and the feasibility of adaption of their systems for Navy laboratory use. The third and the final goal of the study was to further research on how to utilize existing models and systems in other areas to apply to any gaps identified through the interview process of the qualitative study. The study found that infrastructure readiness is viewed holistically as an environment to perform work, and includes items outside the technical definition of infrastructure, to include items like space, laboratory equipment, and processes, and that there are significant gaps in the existing Navy infrastructure readiness systems to manage many of these areas. In addition, two management system approaches emerged, tactical and strategic. Tactical management is focused on real-time management of systems to ensure a readiness state, while strategic management is more of a capacity management system to ensure adequate capacity when needed.
本定性基础理论研究的目的是根据海军实验室检验基础设施战备的定义,并定义有效管理战备以满足不断变化的技术任务要求的最佳标准或方法。通过对领导层的半结构化访谈,了解他们对基础设施准备就绪的感知定义和当前模型的感知充分性,明确了充分定义、测量和评估海军实验室基础设施准备就绪的标准。这将允许对现有系统进行进一步评估,并确定任何差距或风险。本研究的主要目标是创建海军实验室基础设施准备的准确定义,以及随后准备的关键属性。该研究的第二个目标是研究其他战备系统,以评估其战备要素,以及确定海军实验室适用性和海军实验室使用其系统适应性的措施。本研究的第三个也是最后一个目标是进一步研究如何利用其他领域的现有模型和系统来应用于通过定性研究的访谈过程确定的任何差距。研究发现,基础设施战备被整体视为执行工作的环境,包括基础设施技术定义之外的项目,包括空间、实验室设备和流程等项目,现有海军基础设施战备系统在管理许多这些领域方面存在重大差距。此外,还出现了战术和战略两种管理制度途径。战术管理侧重于系统的实时管理,以确保就绪状态,而战略管理更多的是一个能力管理系统,以确保在需要时有足够的能力。
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引用次数: 0
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Journal of Defense Resources Management
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