Gaoya dianqi, 2007 针对弹簧设计中簧丝直径、弹簧中径、工作圈数等结构参数均为标准值或是离散变量,且不可避免地存在加工误差等因素使弹簧实际尺寸偏离设计值,导致弹簧力特性改变等实际问题,提出了以弹簧刚度误差最小、在弹簧尺寸变化时弹簧刚度的可能最大变化量最小,并使弹簧的质量最轻的多目标综合优化方案。通过定义功效系数来协调各子目标之间的关系而使多目标综合优化降为单目标优化。结合分闸弹簧的结构特点及技术指标,采用混合离散优化等技术手段进行求解,获得了满足工程实际要求的分闸弹簧的最佳结构参数,使分闸弹簧的力特性得到了改善。
陈刚, 孙波, 王尔智
doaj
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract The nested subset pattern (nestedness) has been widely used to explain species distributions in island and fragmented systems. Mountain sky islands serve as critical natural laboratories for understanding the evolutionary consequences of geographic isolation and climate
Caiwen Zhang +5 more
wiley +1 more source
[Research progress in the application of molecular imprinting technology in catalysis]. [PDF]
Se PuYe WM +5 more
europepmc +1 more source
Strengthening community‐based fisheries monitoring programs with Indigenous perspectives
Conservation Biology, EarlyView.Abstract Community‐based monitoring (CBM) programs are increasingly recognized as essential for adaptive environmental stewardship. Yet, the CBM literature often highlights successful cases and privileges evaluations by external experts over those of community members themselves.
Kanwaljeet Dewan +2 more
wiley +1 more source
Topics as Outcomes: Modeling the Influence of Intergovernmental Grants on Policy Diffusion
Policy Studies Journal, EarlyView.ABSTRACT Intergovernmental grants stimulate the diffusion of policy reforms, as the federal government provides states with a financial incentive to adopt policies aligned with federal priorities. Less is known about the extent to which these grants also stimulate horizontal diffusion across states.
NaLette Brodnax, Sarah James
wiley +1 more source
[Bioactive substances delivery for bone repair via nanocomposites: advantages, mechanisms, and emerging trends]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiMa Y, Du Z, Wang J, Li X.
europepmc +1 more source
Issue Attention in Public Opinion Polls: Pollsters as Agenda Responders and Agenda Setters
Policy Studies Journal, EarlyView.ABSTRACT Polling organizations, like other policy actors, must prioritize certain issues. We argue that, for normative and financial reasons, pollsters prioritize issues that are viewed as important by other institutions and the public, leading them to focus survey questions on issues that are on congressional and media agendas, and which are public ...
Qian Zhang +2 more
wiley +1 more source
[Research progress on quantitative magnetic susceptibility imaging reconstruction method based on improved U-network model]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiYang W, Zhang R, Keung S.
europepmc +1 more source
Effects of landscape fragmentation on floodplain fishes as revealed by species–habitat networks
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract How species interact with habitat patches is influenced primarily by habitat configuration (e.g., connectivity) and species’ functional traits. As levels of fragmentation increase, identifying the intricate connections between these components is crucial for biodiversity conservation.
Chen Zhang +8 more
wiley +1 more source
Genetic origins and climate‐induced erosion in economically important Asian walnuts
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract The global climate is undergoing unprecedented changes, posing significant threats to species persistence. However, the spatiotemporal impacts on genetic diversity remain poorly understood, hindering species conservation and management. Walnuts, generally referred to as Juglans regia and J. sigillata, are economically vital in Asia, but little
Peng‐Zhen Fan +17 more
wiley +1 more source