Results 11 to 20 of about 8,015 (147)
Adjustable lifetime-prolonging structure for topology control in heterogeneous wireless sensor network [PDF]
, 2013 The problem of topology control in a network of heterogeneous wireless devices with different maximum transmission ranges was considered.For most topology control structures,the energy model adopted is quite unrealistic,in which the reception energy is ...
Da-fang ZHANG +2 more
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Jianzhu Gangjiegou Jinzhan, 2021 提出一种新型外挂蒸压加气混凝土墙板(ALC墙板)连接节点——钢管锚滑移节点(NDR滑移节点),该节点在传统钢管锚节点基础上改进,安装简便且无需预埋件,便于标准化生产。设计了5层1/4缩尺带外挂墙板钢框架模拟地震振动台试验,将其与两种传统刚性连接节点——钢管锚节点和钩头螺栓节点进行对比,研究外挂墙板节点的破坏形式及传力模型。试验选用El-Centro波,地震动加速度峰值APG从0.14g到2.00g逐级增加,结果表明:随着APG的增大,NDR滑移节点外挂墙板在节点连接处未发生明显破坏 ...
张艳霞 +3 more
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Current Status and Prospect of Membrane-Based Offshore Floating Photovoltaic Technology [PDF]
, 2023 [Introduction] The research and development of offshore floating photovoltaic complies with the needs of national energy strategic development, caters to the background of industry development led by science and technology, and helps the development of ...
Bo LIU, Gang LI, Hong QIAO, Jiping CHEN
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Jianzhu Gangjiegou Jinzhan, 2022 钢框架装配式梁柱大多采用高强螺栓连接形式，其节点刚度介于刚接与铰接之间，属半刚性连接。基于国内外研究成果梳理了钢结构装配式半刚性连接节点的研究进展，从节点层面根据柱截面形式不同，讨论了开口截面柱与梁、闭口截面柱与梁的连接节点特性、构造特点及力学性能。从框架层面采用弹性及弹塑性分析方法，基于节点半刚性特征对框架结构进行了力学性能分析。研究结果表明，闭口截面梁柱采用单向螺栓连接节点可免去在柱壁开孔和补焊等做法，并可减轻采用对拉螺栓连接节点造成的柱壁凹屈，但目前针对单向螺栓连接节点力学性能的研究积累尚不够丰富，
梁晓婕, 王燕
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Improving community structure strategy for efficiently enhancing Internet transmission performance [PDF]
, 2013 An efficient weakening community structure strategy (WCS) by adding links to the existing networks was propose,which could enhance Internet transmission performance.Internet topology reconstruction could be realized by WCS strategy,because lightpaths ...
Jun CAI, Shun-zheng YU
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Jianzhu Gangjiegou Jinzhan, 2021 采用精细化有限元分析方法对T形钢管混凝土插拔连接节点的平面内受弯性能进行了研究。首先通过与试验结果进行对比,验证了精细化有限元模型的正确性和准确性。在此基础上研究了主管壁厚、支管壁厚、主管形式和混凝土强度对节点破坏模式和承载力的影响。结果表明,钢管混凝土插板连接节点的破坏模式和钢管插板连接节点不同,为主管冲剪破坏和支管屈服破坏,其受弯承载力比钢管插板连接节点要高很多,国内外设计规范中关于钢管插板连接节点的受弯承载力计算公式不适用于钢管混凝土插板连接节点 ...
孙伟健, 陈娟, 周成野
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Scale-free fault-tolerant topology control algorithm in wireless sensor network with optimization of path energy consumption [PDF]
, 2014 For the issue of path energy consumption produced in the process of transmitting data in large-scale sensor network, an optimization model of network path energy consumption based on the mode of multi-hop was established, and then the law of obtaining ...
Hao-ran LIU +3 more
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Jianzhu Gangjiegou Jinzhan, 2022 模块化钢结构建筑拥有标准化和工业化程度高、建造速度快等突出优势，现已成为建筑工业化发展的重要方向。模块间快速可靠的连接节点是充分发挥模块化建筑优势和保证结构整体性的关键。以施工现场难以快速拼接、多模块间连接操作困难、模块连接与墙板存在冲突三个主要技术难题为导向，归纳国内外柱承重模块化钢结构建筑模块间连接节点的研究现状，探讨国内外已有研究中提出的多种模块间连接节点形式难以支撑模块化钢结构建筑应用与推广的原因。针对目前模块间连接节点存在的问题，分析模块间连接节点被广泛适用的重要特征 ...
翟思源 +5 more
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Research on fractional repetition codes based on group divisible designs [PDF]
, 2015 A novel design of FR (fractional repetition) codes was proposed which aims at providing efficient repair at the minimum bandwidth regenerating point.The design consisted of an outer MDS (maximum distance separable) code and an inner repetition code ...
Bing ZHU +4 more
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QL-STCT: an intelligent routing convergence method for SDN link failure [PDF]
, 2022 Aiming at the problem of routing convergence when SDN link failure occurs, a Q-Learning sub-topological convergence technique (QL-STCT) was proposed to realize intelligent route convergence when SDN links fail.Firstly, some nodes were selected in the ...
Chao CHEN +7 more
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