Results 21 to 30 of about 19,072 (129)
Assessing differences among elasmobranch nurseries to aid conservation based on a genomics framework
Conservation Biology, EarlyView.Abstract Elasmobranch nurseries often differ in environmental conditions, demographics, and use patterns. These differences affect the distribution of genetic variation among nurseries. However, conservation and management strategies often fail to account for such differences because they are difficult to characterize.
Dominic G. Swift +8 more
wiley +1 more source
OPC Technology Research and Application for Tobacco Primary Control System [PDF]
, 2013 OPC是一项通用的工业技术规范和标准，OPC技术规范主要用于解决应用软件和各种不同厂家的设备驱动程序的通讯问题。本论文主要阐述了基于工业计算机控制系统与工控组态软件设计技术的OPC技术应用。 在论文第一部分中，主要阐述工业计算机控制系统与工控组态软件技术，旨在说明现代工业控制系统的技术特点； 论文第二部分主要阐述OPC技术基础和OPC开发技术实现，主要研究了OPC技术的规范、接口、过程控制技术以及通用型OPC应用方法； 论文第三部分主要说明CIMS系统的研究，重点阐述了CIMS系统的数据集成和OPC服务；
陈日栋
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Resource Substitution: Local Governments' Issue Attention and Policy Reinvention
Policy Studies Journal, EarlyView.ABSTRACT Research on policy reinvention, where a government modifies rather than replicates policy innovations introduced by other governments, has progressed significantly, but how it is influenced by the government's issue attention has not been thoroughly examined.
Yingxin Zhang, Yixue Yao, Kaifeng Yang
wiley +1 more source
Ecology and Evolution, Volume 16, Issue 5, May 2026.This study reveals a shift in woody plant community assembly from competitive exclusion in early succession to habitat filtering in later stages within karst areas. Environmental distance (80.54%) contributed significantly more than geographical distance (9.95%), providing strong quantitative evidence that niche processes, particularly habitat ...
Hongfen Hu +5 more
wiley +1 more source
Review of Policy Research, Volume 43, Issue 3, May 2026.ABSTRACT Public private partnership literature promotes hybrid implementation structures as a potential solution to deal with limited resources and high levels of implementation burden and complexity. Despite the growing relevance and promises of hybrid implementation structures, we lack systematic knowledge on what makes governments opt for the ...
Stefan Wittwer, Fritz Sager
wiley +1 more source
, 2019 绳系并联机构因具有结构简单、工作空间大、惯性小等优势,得到了广泛的应用。该文针对支撑绳索中普遍存在的迟滞效应进行了实验研究。首先,分析了某绳系并联机器人(Wire-driven Parallel Robot, WDPR)样机中的绳迟滞曲线的数学模型,并利用实验数据识别出了模型中的相关参数;其次,通过不同条件下的绳索伸-缩实验,探讨了绳拉力迟滞效应的影响因素;接着,分析了迟滞效应对飞行器模型位姿和气动载荷参数解算的影响情况。最后,以某风洞试验模型支撑绳系并联机器人样机中支撑飞机模型的牵引绳的迟滞现象为例 ...
冀洋锋 +4 more
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The development of neuromorphic electronics with visual perception and adaptive capability is highly desirable for advancing artificial vision systems. Herein, we have demonstrated a dual‐plasticity adaptive phototransistor based on IGZO nanofibers that exhibits the perception and dynamic adaptation behavior of rod and cone cells to varying ...
Shanshan Jiang +5 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2018 自复位钢板剪力墙是将后张拉节点和薄钢板剪力墙相结合而构成的一种新型抗侧力体系。后张拉梁柱节点和柱脚节点提供复位能力,减小结构震后残余变形,内填钢板则是主要的抗侧力元件和耗能元件。地震后通过更换钢板可使结构恢复正常使用功能。建立了自复位钢板剪力墙有限元模型进行水平加载分析,研究了内填钢板和边缘框架的相互作用,以及内填钢板的厚度和跨高比对自复位钢板剪力墙强度、刚度、滞回性能及耗能能力的影响。分析结果表明,自复位钢板剪力墙的塑性变形发生在内填钢板上,边缘构件保持弹性以提供复位能力。随着钢板厚度和跨高比增大 ...
罗小奇, 陈麟, 吴珊瑚
doaj
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT To address the issues of aluminum (Al) powder agglomeration during combustion and low oxidizer decomposition efficiency in composite solid propellants, this study utilized in situ self‐assembly technology to prepare cobalt‐based hybrid‐coated modified Al powder (Al@CZ).
Chong Chen +11 more
wiley +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Driven by global energy transition and sustainability, sodium‐ion batteries (SIBs) have emerged as key alternatives to lithium‐ion batteries for low‐to‐medium energy storage, because of abundant sodium resources and low cost. However, their commercialization is hindered by the lack of anodes with high capacity, fast kinetics, and long‐term ...
Shuang‐Lin Cai +13 more
wiley +1 more source