Results 41 to 50 of about 22,626 (131)

Uncovering correlates of decline and critical refuges for a threatened terrestrial mammal

open access: yesConservation Biology, EarlyView.
Abstract Globally, the geographic ranges of numerous species are contracting. Identifying spatiotemporal patterns of threat impact can illuminate why species decline in some parts of their range but persist in others. We developed a correlative approach to identify species’ response thresholds and locate ecological refuge areas associated with ...
Natalya M. Maitz   +5 more
wiley   +1 more source

数字光纤中继系统的抖动积累特性

open access: yesGuangtongxin yanjiu, 1990
本文探讨数字光纤中继系统中的抖动积累问题,具体分析谐振槽路(RC)作定时提取时的抖动积累特性,并给出适于工程估算抖动积累特性的简化公式。
杨铸
doaj  

Scientists’ warning on the global destruction of rock outcrop ecosystems

open access: yesConservation Biology, EarlyView.
Abstract Rock outcrops are geological formations that harbor a highly specialized biota adapted to harsh environmental conditions that differ from their surrounding landscapes. They are globally distributed, especially in old, highly weathered landscapes, and can function as habitat islands containing high levels of endemism and distinct evolutionary ...
Luiza F. A. de Paula   +19 more
wiley   +1 more source

永磁机构及其发展动态

open access: yesGaoya dianqi, 2001
本文从真空断路器的动作特性出发 ,讨论了真空断路器各种机构的特点以及与真空断路器动作特性的匹配情况 ,提出了一种真空断路器用新型的永磁机构 ,并从原理上论述了该机构具有可靠性高、零部件少、免维护等优点 ,同时 ...
游一民, 郑军, 罗文科
doaj  

Psychometric framework for coexistence with large carnivores

open access: yesConservation Biology, EarlyView.
Abstract Human–carnivore coexistence is essential for biodiversity conservation, yet measuring the attitudes and behaviors that support it remains methodologically challenging. We developed psychometric scales to assess willingness to coexist with carnivores and the underlying beliefs of this coexistence through an iterative expert elicitation process ...
Benjamin Ghasemi   +14 more
wiley   +1 more source

计算带传动弹性滑动角的简易方法

open access: yesJixie chuandong, 1997
计算带传动弹性滑动角的简易方法湖北汽车工业学院刘雍德引言摩擦型带传动工作时,带在带轮上有微量相对滑动——弹性滑动,这是带传动的固有特性。实验结果表明,当工作载荷低于额定载荷时,只在带离开带轮前的一部分接触弧上发生弹性滑动,这一部分弧被称为弹性滑动弧,...
刘雍德
doaj  

Behavioral interventions to reduce demand for threatened freshwater turtles as pets

open access: yesConservation Biology, EarlyView.
Abstract Growing demand for freshwater turtles as pets has fueled illegal trade and accelerated wild population declines, underscoring the need for theory‐based demand‐reduction interventions. We conducted a three‐part randomized controlled trial with active turtle keepers (n = 1800) in China to test conservation‐ and legality‐framed messages by ...
Wuji Zheng   +9 more
wiley   +1 more source

27.5kV永磁机构真空断路器动作特性仿真与试验研究

open access: yesGaoya dianqi, 2008
针对27.5kV永磁机构真空断路器并根据其动作特点,进行了基于Ansoft和Matlab软件的静态、动态特性仿真。首先,建立有限元模型,利用Ansoft软件包对永磁机构的静态特性进行仿真。其次,根据耦合电压平衡方程和达朗贝尔机械运动特征方程,在静态仿真基础上采用Matlab构建永磁机构断路器的运动模型,对永磁机构动铁心、断路器动触头运动特性进行了仿真分析。最后,对设计的样机进行了动态测试,测试结果表明仿真的正确性。
周丽丽   +5 more
doaj  

How Do I Measure up? Social Influence and L2 Motivation in the Algorithmic Age

open access: yesInternational Journal of Applied Linguistics, EarlyView.
ABSTRACT Comparative thinking is a fundamental human drive and a hallmark of contemporary life. For social action, such as the learning and use of additional languages, a target for appraisal (an L2 attribute) is evaluated in relation to a comparison standard (an appraiser's standpoint).
Alastair Henry, Meng Liu
wiley   +1 more source

Learning Styles, Engagement and Anxiety in AI‐Mediated Writing: A Multimodal Feedback Study

open access: yesInternational Journal of Applied Linguistics, EarlyView.
ABSTRACT Artificial intelligence (AI) tools now permeate English academic writing. However, evidence on how feedback modalities align with student differences and with psychological mechanisms remains limited. Prior work often reduced learning styles to simple matches with delivery modes and treated learning engagement and writing anxiety as peripheral.
Yi Ren   +3 more
wiley   +1 more source

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