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船用橡胶电缆整体老化剩余寿命研究 被引量:10
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作者 吕事桂 杨立 李伟华 《船海工程》 2010年第4期37-39,共3页
在相关假设前提下对电缆进行热分析,推导出线芯温度与电缆绝缘材料导热系数之间的关系,结合电缆老化寿命方程,得出给定载流量下船用橡胶电缆整体老化后剩余寿命呈指数下降及降低工作载流量可提高电缆剩余寿命结论。同时,提出利用测定电... 在相关假设前提下对电缆进行热分析,推导出线芯温度与电缆绝缘材料导热系数之间的关系,结合电缆老化寿命方程,得出给定载流量下船用橡胶电缆整体老化后剩余寿命呈指数下降及降低工作载流量可提高电缆剩余寿命结论。同时,提出利用测定电缆线芯温度和载流量推算出导热系数或者通过与未老化电缆比较两接线端头线芯温度判定电缆整体老化程度的方法。 展开更多
关键词 电缆 舰船 老化寿命 整体老化 导热系数
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老年人整体运动敏感性降低的脑灰质体积变化基础 被引量:2
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作者 金花 朱子良 +5 位作者 严世振 梁紫平 艾克旦•艾斯卡尔 尹建忠 姜云鹏 林琳 《心理与行为研究》 CSSCI 北大核心 2020年第5期603-610,共8页
本研究使用多体素模式分析方法和随机点阵范式,首次探索了老年人整体运动敏感性(GMS)下降和其脑灰质体积下降间的关系。结果发现,老年人GMS显著低于年轻人,老年人V5/MT、V3和额顶等脑区灰质体积显著小于年轻人;V5/MT和V3区的灰质体积信... 本研究使用多体素模式分析方法和随机点阵范式,首次探索了老年人整体运动敏感性(GMS)下降和其脑灰质体积下降间的关系。结果发现,老年人GMS显著低于年轻人,老年人V5/MT、V3和额顶等脑区灰质体积显著小于年轻人;V5/MT和V3区的灰质体积信号可以有效预测个体的GMS。结果提示,V5/MT区和V3区,特别是V3区的灰质体积下降可能是老年人GMS下降的主要原因;而基于“去分化假设”,全脑范围内其余脑区的灰质体积下降可能也在一定程度上与老年人GMS下降有关。 展开更多
关键词 整体运动知觉老化 灰质体积 多体素模式分析 V5/MT V3
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Strategic Changes and Policy Choices in the Governance of China’s Aging Society 被引量:4
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作者 Hu Zhan Peng Xizhe Li Guanghui 《Social Sciences in China》 2020年第4期185-208,共24页
Population aging has become normal in Chinese society,but the existing governance models and institutional arrangements still lack a structured and systematic response and adaptation,and the corresponding governance r... Population aging has become normal in Chinese society,but the existing governance models and institutional arrangements still lack a structured and systematic response and adaptation,and the corresponding governance research has also encountered difficulties.Policy choices for the governance of China’s aging society should be based on“Chinese characteristics,”which should be developed into“Chinese advantages”in order to achieve a transformation from fragmented management to holistic governance and from a focus on the elderly population to an emphasis on the entire life cycle of the whole population,as well as the policy adjustment logic of changing from“making population change adapt to institutions”to“making institutional change adapt to population.”The current strategy for an aging society and policy arrangements should conduct strategic allocation from the standpoint of China’s demographic situation and the laws governing the development of aging.We need to recharge our ideas and innovate our systems on the basis of our cultural and institutional heritage and should set up a comprehensive and dynamic socioeconomic support system based on pluralistic co-governance and sustainable development.We should also strengthen research on the evolution of the elderly population and the development of the aging society of the future,and on this basis select an entry point for policy readjustment and even reconstruction. 展开更多
关键词 aging population holistic governance public policy Chinese solution
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