Results 141 to 150 of about 33,709 (239)
Rare Metals, EarlyView.ABSTRACT High‐power piezoelectric ceramics which have a wide operating temperature range are essential for sensor and actuator applications in extreme conditions. However, their development is fundamentally hindered by the inherent trade‐off among key parameters (TC, d33, Qm).
Rui Yan +10 more
wiley +1 more source
Gaoya dianqi, 2018 当低压微电网由并网过渡到孤岛运行时会出现功率缺额的现象,导致微电网无法保持电压和频率稳定。文中提出了双重下垂控制的策略,即在改进耦合下垂控制同时,又增加一层对于直流总线电压响应的下垂控制。该控制策略能够在这孤岛模式和并网模式下工作,实现自动调节微电源的输出功率。此外,该控制策略还解决了孤岛模式和并网模式之间的切换不平滑的问题。对提高微电网的电能质量和供电可靠性具有重要意义。以上所提出的控制策略通过MATLAB仿真验证其有效性。
汪玉凤, 李琳, 王立辉, 张志强
doaj
[Rehabilitation strategy for the improvement of long-term outcomes of patients after sepsis]. [PDF]
Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi, 2022 Yao YM, Zhang H.
europepmc +1 more source
Rare Metals, EarlyView.ABSTRACT The growing concern over human health issues, driven by increasingly severe electromagnetic pollution from 5G communication, has made the urgent development of high‐performance electromagnetic wave (EMW) absorbing materials. Although carbide‐based materials are promising because of their conductive and polarization losses, existing single ...
Chenqiang Duan +9 more
wiley +1 more source
野生动物学报野生动物作为自然生态系统中重要的组成部分，与人类的关系在实现生态文明建设、构建和谐生态关系方面发挥着重要作用。近些年，云南亚洲象（Elephas maximus）肇事事件频繁发生，严重影响当地民众的生产生活。野生动物肇事公众责任保险作为我国缓解人兽冲突的重要公共产品，引起公众广泛关注，农户作为重要参与主体，对保险补偿满意度是衡量保险实施效果的重要尺度。基于对前人有关研究的梳理，从个人特质、家庭特征、成本效益和政策4个维度提出理论假设，对云南普洱市和西双版纳傣族自治州地区开展实地调研获取补偿满意度相关数据，
余磊, 刘思芮, 李娅, 郭辉军
doaj
The Thinking of Post Office Bank Asset Preservation Countermeasures [PDF]
, 2016 摘要 中国邮政储蓄银行于2007年3月20日正式挂牌成立，是在改革邮政储蓄管理体制的基础上组建的商业银行。中国邮政储蓄银行承继原国家邮政局、中国邮政集团公司经营的邮政金融业务及因此而形成的资产和负债，并将继续从事原经营范围和业务许可文件批准、核准的业务。2012年2月27日，中国邮政储蓄银行发布公告称，经国务院同意，中国邮政储蓄银行有限责任公司于2012年1月21日依法整体变更为中国邮政储蓄银行股份有限公司。依法承继原中国邮政储蓄银行有限责任公司全部资产、负债、机构、业务和人员 ...
徐宏宇
core
Conservation Funding at the Local Level 地方层面的保护资金
Wildlife Letters, EarlyView.Direct conservation fund transfer to local communities ensures the involvement of these communities in decision‐making and fund utilisation, which will ultimately lead to effective biodiversity conservation. A Cakchiquel family in the hamlet of Patzutzun, Guatemala, 1993. Credits: John Issac. Source: UNEP‐WCMC Internal Resources.
Jithu K Jose
wiley +1 more source
Theoretical and empirical analysis of tax compliance in the leather industry —A Case Study on the tax compliance of the leather industry in A County [PDF]
, 2015 本文通过采集A县2012年—2014年三年的皮革产业的详细信息以及完整的纳税申报和缴纳入库的税款数据并进行比对分析，以完善A县皮革产业纳税遵从管理、提高皮革产业的纳税遵从度为目的，以国内外学者关于纳税遵从理论的研究成果如预期效用理论、前景理论作为本文的理论基础，以实证研究与规范研究相结合的方法，运用数据对比分析，试图分析影响A县皮革产业企业纳税遵从的各种因素，总结现阶段A县皮革产业纳税遵从存在的问题，深入分析引发问题的更深层次的原因 ...
郭慧文
core
Wildlife Letters, EarlyView.Asiatic black bears in Russia face conservation threats such as habitat destruction and fragmentation, which exacerbate food shortages caused by crop failures. This study explores an innovative approach to rehabilitating bears that abandon hibernation in mid‐winter due to extreme exhaustion by providing supplemental food near their den sites.
Sergey A. Kolchin +2 more
wiley +1 more source
Wildlife Letters, EarlyView.This review summarizes the status of musk deer in China, highlighting severe population declines due to illegal hunting and habitat loss, and proposes integrated conservation strategies including habitat protection, captive breeding, and law enforcement to support the recovery and sustainable management of this ecologically and economically important ...
Feng Jiang +8 more
wiley +1 more source