Results 21 to 30 of about 2,706 (105)
Robust metrics for quantifying and comparing resistance and recovery in experimental studies
Abstract Various indices have been developed to experimentally quantify resistance and recovery (two components of engineering resilience) in response to anthropogenic and natural disturbances. This diversity complicates the selection of appropriate metrics for comparing resilience across ecosystems and studies.
Zewei Zhuang +2 more
wiley +1 more source
Objective To explore the mediating effect of self-perceived burden on the relationship between psychological resilience and quality of life in patients after anal fistula surgery.
XU Zhaojun (徐召君) +6 more
doaj +1 more source
Embracing the politics of transformation: Policy action as “battle‐settlement events”
Abstract Societal transformations for addressing climate change are intensely contested and at risk of resistance and backlash to ambitious policy action. But they are frequently modeled through heuristics such as S‐curves which abstract from such conflicts, assuming increasing returns to scale as a driver of transformations.
James Patterson, Matthew Paterson
wiley +1 more source
Objective To explore the relationships between quality of life, self-perceived burden, and psychological resilience in postoperative anal fistula patients, and to provide a theoretical basis for improving their quality of life.
ZHANG Shuixia (张水夏) +7 more
doaj +1 more source
Abstract This article argues that social actors' media ideologies about digital interfaces are key to the enregisterment of online activities. Focusing on an online register emergent from user activities around Year, Hare, Affair (YHA)—a state‐aligned Chinese animation—I explore how different metadiscourses evaluate this register by entextualizing ...
Jiarui Sun
wiley +1 more source
【目的】探讨心理弹性及自尊两个积极心理因素在缓解慢性耳鸣患者情绪困扰中的作用,为耳鸣的临床管理提供新思路。【方法】通过心理弹性量表、自尊量表及抑郁-焦虑-压力简表了解慢性耳鸣患者的心理弹性、自尊、抑郁、焦虑及压力水平,再运用SPSS 24.0对入组的124名受试的数据进行相关分析及中介效应分析,最后运用AMOS 24.0进行结构方程模型验证。【结果】①绝大部分患者并无严重的情绪困扰,心理弹性、自尊、抑郁、焦虑及压力均无显著的性别间差异(P > 0.05);②心理弹性、自尊与抑郁 ...
戚敏 +6 more
doaj
心脏的收缩和舒张功能与心肌弹性密切相关 .为了研究心肌弹性 ,探讨心力衰竭的机理 ,作者对猪心的弹性模量进行了测定 .实验结果表明 ,心肌的弹性比骨骼肌的弹性更好 ,且心肌的蠕变也不明显 .
刘鸿莲 +4 more
doaj
为了深入了解内置工字形CFRP型材的方钢管混凝土中长柱的力学性能,通过试验与有限元分析结合的方式研究了其在双向偏心状态下的工作机理及破坏形态。在此基础上,对典型构件进行了全过程分析,研究了偏心率、含钢率、长细比、钢材屈服强度以及混凝土抗压强度对构件受力性能的影响。研究结果表明,内置工字形CFRP型材的方钢管混凝土中长柱的荷载-挠度曲线可分为弹性阶段、弹塑性阶段、塑性强化阶段以及下降阶段4个阶段;CFRP型材与钢材及混凝土有着良好的协同工作性能,可加强对混凝土的约束作用,CFRP型材最终发生脆性破坏 ...
冯兴, 李帼昌, 杨志坚, 曹文正
doaj
用平面波赝势密度泛函方法和准谐德拜模型,计算了面心立方结构氧化钙的弹性性质,得到的平衡晶格参数与实验值和其他理论值符合得较好.还得到了0~170 GPa压力范围的弹性常数,弹性模量及弹性各向异性参量,与Tsuchiya和Kawamura的理论值相符.
程艳, 邓烨, 逯来玉
doaj
基于混凝土黏弹性理论,考虑受弯和受压,分别对轴向和弯曲松弛系数建立徐变微分本构和代数本构两套力学方程组。按照高大型组合截面的力学特点,给出合理的简化假设,由微分解反算松弛系数的解析解。为了公式的便洁性和合理性,与微分方程组的精确解进行对比分析,不断调整和修正组合梁松弛系数的计算公式。简化计算公式与微分方程精确解符合良好;偏心约束的松弛系数为轴心约束系数乘以一个考虑偏心的折减系数,钢梁的约束偏心使轴向约束几乎折减为0,轴向松弛系数为常量0.5;与之相反,钢梁对混凝土的弯曲约束很大,几乎为刚性约束 ...
章胜平 +4 more
doaj

