Results 91 to 100 of about 21,882 (195)
Effects of political identity activation and inaccurate metaperceptions on attitudes toward wolves
Conservation Biology, EarlyView.Abstract Polarization between groups can undermine durable conservation outcomes. Activating group identities (i.e., an individual's sense of self derived from membership in a group) can exacerbate differences, especially when people hold inaccurate perceptions of their peers and rivals.
Alexander L. Metcalf, Justin W. Angle
wiley +1 more source
Dianci bileiqi, 1989 介绍了四种压敏电阻试样在波前1ns左右、脉宽10～100ns极陡脉冲作用下的电流响应和电压响应特性.试验表明,在上述极陡波作用下,电流响应由峰值为Im的容性电流开始,以后转为平稳的阻性电流Is.Im及Is随外施电压u0增加而增加,但增加情况随试样而异.电压响应的前部存在"过冲",随后过渡至平坦的残压Us.过冲出现时间随u0增加而前移,峰值Up变化也跟试样有关.并指出,压敏电阻的"压敏"特性有一个时间过程,它与外施电压的幅值、陡度有关,也与试样有关 ...
余存仪, 刘辅宜
doaj
Conservation Biology, EarlyView.Abstract Human development is a driver of global change and a major threat to biodiversity. Protected areas maintain and support biodiversity, but outside stressors, such as climate change and land use change, can negatively influence natural resources within protected areas.
Leah J. Rudge +2 more
wiley +1 more source
Gaoya dianqi, 2019 离线时间长短严重影响动车组受流质量,目前离线时间的划分主要根据运行管理经验,尚无理论分析。基于现场测试数据和MATLAB仿真软件,建立了包含弓网离线电弧和列车牵引变流器的仿真分析模型,分析了弓网离线时的过电压与谐波,以及离线对牵引变流器直流侧电压的影响。结果表明:弓网离线和恢复过程均有约1.3倍的过电压产生,并伴随有大量的谐波反馈到接触网上;牵引变流器直流侧压降速度随列车行驶速度的增加而呈指数增大,250 km/h以上行驶速度时1 000 V压降所需时间已经下降到100 ms以内;相同离线时间下 ...
黄祥, 高国强, 吴广宁
doaj
Striking a Balance: Stakeholder Perceptions of Risk in Horse Racing
Equine Veterinary Journal, EarlyView.ABSTRACT Background Thoroughbred racing is a major industry, and in recent years, public concerns about equine safety have become more prominent, particularly in relation to on‐track injuries and fatalities. This has challenged the industry's social licence to operate (SLO).
Jessie McCarthy +2 more
wiley +1 more source
International Journal of Applied Linguistics, EarlyView.ABSTRACT This study investigates how the learner‐related factors of language dominance, encompassing language history, proficiency, use, and attitude, modulate congruency effects in multi‐word unit (MWU) processing among early bilinguals. Seventy Cantonese–Putonghua bilinguals completed lexical decision tasks measuring reaction time and accuracy for ...
Mingjia Cai, Yuan Liang
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2018 对销轴连接中钢销轴的设计(抗弯计算、承压强度以及局部接触应力等问题)进行研究,着重讨论了最大计算弯矩的选取、销孔间隙对承载力的影响、接触应力的大小及其影响。进行销轴设计时其计算弯矩有3个不同的公式,计算公式的选取应与销轴连接的加工精度(销孔间隙)相关联。销孔间隙对销轴连接的承载力有很大影响,文中推荐的销孔间隙规定可以让销轴承载力具有相同的安全度。销轴连接中常常存在很高的接触应力,因而设计时应对其进行验算,具体要求可参考欧洲钢结构相关规范。钢销轴宜采用更高强的材质。最后,对销轴采用非结构常用钢材 ...
许强, 苏项庭, 关超
doaj
A fault2tolerant real2time schedul ing algorithm supporting tasks of multilevel critical ity [PDF]
, 2008 摘 要: 针对当前对支持多关键度的实时系统没有涉及容错功能的研究情况,本文提出了支 持多级关键度任务的容错实时系统模型,通过对模型中任务出错后关键度任务集合的响应时 间分析,提出了新的算法,我们称之为补任务启动及容错优先级确定算法,算法假设在运行该 算法的时刻开始系统不会再次出错,基于这个假设计算每个任务的响应时间,从而决定要不要 启动出错任务的补任务以及容错优先级如何分配. 该算法在保证系统的容错能力的同时提高 了任务的完成率,使系统吞吐量损失最小,从而提高系统的可靠性.
曾坤, 黎忠文
core
Study on Key Parameter Range for Curie Point Passive Shutdown Device Based on Integrated Fast Reactor [PDF]
Passive shutdown procedures can be initiated by the Curie point passive shutdown device, which is a sophisticated reactor safety mechanism that augments the coolant temperature at the core outlet to ensure safety.
LI Xinyu, ZHANG Xisi, XUE Fangyuan, LIU Yizhe
core +1 more source
Synthesizing Empirical Research on Learner Metacognition in Second Language Writing
International Journal of Applied Linguistics, EarlyView.ABSTRACT Despite considerable research interest in learner metacognition in second language (L2) writing, there is not yet a review that synthesizes the existing empirical findings and discusses their implications. To fill the void, this systematic review synthesized 39 empirical studies on learner metacognition in L2 writing and examined their salient
Chen Li, Icy Lee, Zhicheng Mao
wiley +1 more source