Results 21 to 30 of about 1,176,567 (157)

How endorser attributes influence conservation communication

open access: yesConservation Biology, EarlyView.
Abstract Conservation communication often uses the celebrity endorsement strategy. However, robust evidence regarding its effectiveness is still limited. More importantly, practitioners do not have guidelines for selecting an ideal endorser because there is no clear consensus on what endorser attributes are most critical.
Xia He, Tien Ming Lee
wiley   +1 more source

无人机的发展现状与展望

open access: yes, 2005
回顾了无人机的发展历程, 并阐述了无人机的系统结构、分类、用途及其关键技术, 就主要机型做了简要的介绍 ...
淳于江民, 张珩
core   +2 more sources

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

无人机多机协同对抗决策研究 [PDF]

open access: yes, 2018
针对多对多无人机之间的空战对抗,考虑对抗双方具有同等数量无人机的情况,利用影响图(ID)建立多无人机协同空战连续决策过程,使用贝叶斯推论对空战态势进行实时评估.根据评估结果,采用匈牙利算法完成目标的动态分配,将多无人机之间的对抗转化为动态的多个单架无人机之间的对抗,无人机在对抗中根据由双方态势所设计的决策规则进行机动决策.红蓝双方多无人机之间对抗仿真实验结果表明了所设计模型的有效性.国家自然科学基金资助项目(61673327);;航空科学基金资助项目 ...
邵将, 徐扬, 罗德林
core   +1 more source

Off‐Task Talk to Manage Relationship Work During Student Group Work in Second Language Classrooms

open access: yesInternational Journal of Applied Linguistics, EarlyView.
ABSTRACT This paper presents a conversation analytic study on student relationship work in off‐task talk (OTT) during group work in foreign language classrooms. Often seen as disengagement from tasks, OTT's social and relational functions in student classroom group interaction and formation remain underexplored.
Yanyan Li
wiley   +1 more source

地表糙度测定方法研究

open access: yesShuitu Baochi Xuebao, 2020
地表微地形测量是地表粗糙度定量化的基础,对地表形态动态监测和土壤侵蚀过程相关研究具有重要意义。采用链条法、照相机法和无人机法,选取常规人工降雨土槽和野外径流小区,设置裸地和植物根系2个处理,分别测定其地表糙度。结果表明:(1)链条法、照相机法和无人机法测定的平均弯曲性指数分别为0.257,0.219,0.248,与标件实际平均弯曲性指数0 ...
张娜娜, 王兵, 张宝琦, 李永宁
doaj  

The Communication of a Creeping Crisis: Why Messages Are Recognized but Rarely Taken Into Account in Practices—The Case of Drought

open access: yesRisk, Hazards &Crisis in Public Policy, Volume 17, Issue 4, December 2026.
ABSTRACT Public communication campaigns on environmental issues rely on economic and ecological arguments, assuming that the recognition of messages is sufficient to produce adjustments in practices. Drought constitutes a specific case of this problem, as a creeping crisis: a slow‐onset hazard whose effects remain weakly visible in everyday life.
Sébastien Rouquette, Inès Bellahcene
wiley   +1 more source

火炬传递无人机

open access: yes, 2021
本实用新型涉及无人机技术领域,特别涉及一种火炬传递无人机。包括旋翼无人机、火炬倾转机构、电池配重系统及火炬,其中旋翼无人机采用四旋翼构型,电池配重系统布置于旋翼无人机内,火炬倾转机构设置于旋翼无人机的外侧,火炬安装在火炬倾转机构上,并且通过火炬倾转机构的驱动实现倾转动作。本实用新型可实现无人机高载重比 ...
杨丽英   +6 more
core  

All‐van der Waals‐Integrated Memristors Based on Atomically Thin MoS2‐xOx Film for LIF Neurons and Nociceptive Receptors

open access: yesRare Metals, Volume 45, Issue 11, November 2026.
ABSTRACT Atomically thin two‐dimensional (2D) materials have emerged as ideal candidates for realizing high‐density, fast switching, and energy‐efficient memristors. However, ultrathin memristive interlayers, particularly at the atom scale, typically suffer from poor endurance and significant variations.
Yujie Bai   +12 more
wiley   +1 more source

First, He Was Adam, and Then, She Was Eve

open access: yesSexuality, Gender &Policy, Volume 9, Issue 4, November 2026.
ABSTRACT Trans* is an umbrella term that is used to describe people who identify with a gender that is different from their assigned sex at birth. There has been a marked increase in young people presenting to child and adolescent mental health services due to a lack of specialist gender clinics in the United Kingdom.
Corey Hartley   +2 more
wiley   +1 more source

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