Results 31 to 40 of about 9,512 (169)
Hobbyist preferences for pet freshwater turtles
Conservation Biology, Volume 40, Issue 2, April 2026.Abstract The burgeoning pet trade is a primary threat to wild freshwater turtles worldwide. Although the risks from commercial exploitation of turtles have been discussed widely, there is little empirical research on preferences for pet turtles from a hobbyists’ perspective.
Jingjing Zhao +7 more
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, 2008 风力发电机组由于机械结构以及电气负荷承受能力的限制存在着转速限制和功率限制, 额定风速以上时,需要通过控制桨距角来实现额定恒功率输出, 同时保持转速在额定转速处. 本文建立了风力发电机组的详细机理模型, 将H∞控制理论应用到额定风速以上时风力发电机组的恒功率输出的控制器设计, 建立了标准H∞恒功率控制问题. 利用LMI方法求解, 得到了桨距角的H∞控制器.
张先勇, 杨金明, 吴捷, 舒杰
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Emerging Risks and Housing Affordability Policy in Miami High‐Rises
Journal of Critical Infrastructure Policy, Volume 7, Issue 2, Fall/Winter 2026.ABSTRACT Recent advances in satellite‐based remote sensing and building performance measurement have raised critical questions regarding the long‐term settlement behavior of high‐rise structures situated on the complex subsurface of southeastern Florida.
Jean‐Pierre Bardet, Jeffrey Dorfman
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, 2019 风致振动是引起输电塔破坏的主要原因之一,为了研究极端大风区域设计基准期内输电塔在实际风荷载作用下是否会发生疲劳破坏,选取750kV吐鲁番—哈密一线的7A5-J1型耐张塔作为研究依据,研究了沿线风速的分布,采用自回归线性滤波法结合Davenport风速谱编写程序模拟了脉动风速时程,并利用Miner线性累积损伤理论结合材料的S-N曲线建立了一套完整的实际风荷载作用下的输电塔疲劳寿命的计算方法,并以此计算了该线路沿线最不利位置的疲劳寿命。结果表明:该线路输电塔在设计基准期内不会出现疲劳破坏 ...
周楠 +5 more
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Early detection of thermal runaway (TR) is essential for lithium‐ion battery (LIB) safety, as unchecked TR risks catastrophic failures in energy storage systems. Gas‐based sensing offers a faster and more direct approach by detecting decomposition products at the molecular level.
Tianshui Liang +9 more
wiley +1 more source
, 2008 以木麻黄基干林后沿风速为研究对象,从2006年11月到2007年3月在东山岛调查了不同发育阶段的木麻黄基干林后有效防护距离内的风速。结果表明:基干林带后风速总体上呈上升趋势,但在5h-10h有所下降,10h后风速一直上升,直到25h处接近于空旷地;空间分布呈平滑的上升曲面,局部有凸起和下凹区域,等值线分布疏密相间,局部区域弯曲不直。国家“十一五”科技支撑计划项目(2006BAD03A14-01);; 福建省重大科技专项(2006NZ0001 ...
王小云 +4 more
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Gaoya dianqi, 2010 风力发电对发电系统可靠性具有一定贡献,正确地估算包含风电场的发电系统可靠性有助于更好地规划电源结构。传统的单一风速模型忽略了风速与负荷之间的相关性,会给计算结果带来较大的误差。本文提出了风速的分时段估计模型,即按照风速的时间特性分别估计各个时段风速模型的参数,给出了基于此模型的包含风电场的发电系统可靠性计算的一般方法,并分析了单一风速模型与分时段风速模型之间计算结果差异产生的原因,以及风速与负荷之间的相关性对可靠性计算结果的影响。最后通过一个具体的算例说明了分析的正确性。
华文, 徐政
doaj
World Water Policy, Volume 12, Issue 1, February 2026.ABSTRACT Urban expansion significantly impacts flood risk, particularly in rapidly growing areas where impervious surfaces exacerbate surface runoff. This study examines spatial patterns of urban growth and their effects on flood exposure in Mecklenburg County, North Carolina, from 2011 to 2021.
Pegah Madadi, Azad Sadeghi
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Conservation Biology, Volume 40, Issue 1, February 2026.Abstract Spatial segregation in at‐sea distribution is frequently observed in seabirds and can have important implications for conservation and management. Globally, many albatross and petrel populations are declining due to bycatch in fisheries. In South Georgia, the decrease in wandering albatrosses (Diomedea exulans) differs among breeding sites ...
V. Warwick‐Evans +3 more
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International Journal of Urban and Regional Research, Volume 50, Issue 1, Page 191-220, January 2026.Abstract Henry George advocated for capturing land value increases for public ends. The active approach of public authorities organizing and financing land development can help capture higher land value increases, as Hartman and Spit indicate. However, this approach hardly happens in developing countries, where the coalition of private developers and ...
Nannan Xu
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