Results 31 to 40 of about 384,705 (165)
Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Prioritization in conservation is crucial for the development of efficient and effective decision‐making policies. For many decades, the importance of some species and their habitats has been assessed and applied in conservation legislation, but bats and their diurnal roosts have ofbeen overlooked.
David López‐Bosch +6 more
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Conservation Biology, Volume 40, Issue 3, June 2026.Abstract In the western United States, conservation practitioners are increasingly working with private landowners to restore habitat for North American beavers (Castor canadensis) and to use nonlethal mitigation techniques when beavers damage crops and infrastructure.
Brian D. Erickson, Megan S. Jones
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Gaoya dianqi, 2020 为促进孤岛微网中可再生能源的消纳,减小负荷峰谷差。文中在孤岛微网中引入价格型需求响应,以微网运行成本最低和柴油发电机出力最少为目标,综合考虑功率平衡、抽水蓄能机组启停与工况转换等约束条件,构建了含风电、抽水蓄能和柴油发电机的孤岛微网多目标优化调度模型,并采用乌鸦搜索算法进行求解。仿真结果表明:在孤岛微网中引入价格型需求响应能有效削减负荷峰谷差,经济效益显著。与粒子群优化算法相比,乌鸦搜素算法在收敛速度和全局寻优的能力上具有明显优势。
黄景光 +5 more
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Additive manufacturing, commonly referred to as three‐dimensional (3D) printing, provides the geometric freedom and multi‐material integration needed to build soft medical robots for minimally invasive interventions, prosthetics, and rehabilitation.
Yao Wang +5 more
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Developing multifunctional luminescent materials with tunable spectra is crucial for plant lighting and information–security applications. To address the critical requirement of plant photosynthesis for blue and red spectral components, a novel lead‐free double perovskite Cs2NaGdCl6: Sb3+, Pr3+ phosphor was designed and synthesized via a ...
Huangyao Chen +7 more
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Jianzhu Gangjiegou Jinzhan, 2014 为将基于能量的抗震设计方法应用到多自由度结构的抗震设计中,选用20条远场地震波和15条近场地震波,对不同层数的V形偏心支撑钢框架滞回能需求层间分布规律进行了研究,对比分析了远、近场地震下结构滞回能需求分布的不同,给出了滞回能需求层间分布系数的简化计算公式。研究表明,V形偏心支撑钢框架主要依靠耗能梁段发生剪切变形耗散地震能量;近场地震会加大结构底部响应及滞回能需求。
刘衍军, 顾强
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Spatially Downscaling of Future Food Demand for Policy Planning
World Food Policy, Volume 12, Issue 1, May 2026.ABSTRACT Understanding the subnational dynamics of food demand, while accounting for the evolution of the agrifood system at the global level, remains a challenge for designing food policy to ensure food security. To link global agrifood systems with subnational food policy planning, we downscale per capita food demand for 62 food commodities at the ...
Chun Song +3 more
wiley +1 more source
, 2005 2004年前三季度,我国住宅销售面积超过住宅竣工面积,住宅的供求比例为0．86:1,呈现供不应求的现象,这导致了商品住宅房价上升了10．9％。目前,国内学者对住宅需求的分析主要集中在价格、收入和利率等少数几个经济方面的影响因素,但是,这已经无法很好解释政府加大宏观调控力度后住宅需求继续升温的现象。本文将从非经济方面分析我国住宅需求的影响因素,包括人口统计因素、城市化进程 ...
李真雅
core
A survey of demands for health education in patients with acute leukemia
Huli yanjiu, 2005 [目的 ]了解急性白血病病人对健康知识的需求情况 ,为寻求提高病人生活质量的适当方法和途径提供依据。 [方法 ]对 60例住院急性白血病病人进行问卷调查 ,收集资料进行分析。 [结果 ]健康教育需求评分受文化程度和住院天数影响 ,排在前 5位的依次是心理调理、自我护理、各项检查目的、化疗毒副反应的防治以及干细胞移植相关知识 ,其对健康指导方式和健康知识获取途径的需求成多样性。 [结论 ]应采用多种方式相结合的健康指导方式 ,满足病人对健康教育的需求 ,提高生活质量。
陈燕华, 王惠珍, 陶慧清
doaj
全球能源互联网源荷预测是虚拟电厂（virtual power plant，VPP）制定未来调度计划的重要依据。提出一种基于多频组合短期源荷预测的VPP发电侧和用户侧协同优化调度方法。首先对时间序列的负荷数据进行集合经验模态分解（ensemble empirical mode decomposition，EEMD），并将其重构为高低2种频率，使用图卷积神经网络（graph convolution network，GCN）和长短期记忆网络（long short-term memory，LSTM）相结合的GCN ...
吕小红*, 刘维, 刘克恒, 蒋婧
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