Results 11 to 20 of about 32,954 (259)
Using online reports of seahorse seizures to track their illegal trade
Conservation Biology, EarlyView.Abstract Illegal wildlife trade (IWT) is a persistent and extensive threat to global biodiversity. Hundreds of marine fish species are subject to regulation under the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), but it is unclear how much protection species gain from CITES because information on marine fish ...
Sarah J. Foster +3 more
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Fault diagnosis and fault-tolerant control for nonlinear systems with linear output structure [PDF]
, 2005 Article describes the process of fault diagnosis and fault-tolerant control for nonlinear systems with linear output ...
Shen, L., Wang, H., Yue, H.
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International Journal of Applied Linguistics, EarlyView.ABSTRACT Although psychological factors such as emotion and engagement have gained increasing attention for their role in language learning success, a substantial gap remains in understanding the sources of boredom and its impact on learners’ engagement, whether behavioural, affective or cognitive, in languages other than English (LOTE).
Xian Zhao, Danping Wang
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Electro-optic modulation of AlGaN in deep ultraviolet [PDF]
, 2016 深紫外非线性光学材料在光信息处理和高速光通讯等领域具有广泛的应用前景，发展适宜工作在深紫外波段的新型非线性光学材料成为国际学术界和产业界研发的热点。AlGaN基半导体凭借宽带隙带来的信道容量大、纤锌矿晶格排列缺乏反演对称性造成的非线性光学效应、以及作为半导体可控制对n型p型的光电集成等优势，成为理想的深紫外波段非线性光学材料，在电光调制和电光开关等非线性光学器件方面极具应用潜力。本文理论设计并生长了高Al组分的AlxGa1-xN/GaN超晶格结构，通过椭圆偏振光谱表征测算AlxGa1-xN ...
吴小璇
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Beyond Motivation: Modeling the Predictive Role of L2 Pride in Informal Digital Learning of English
International Journal of Applied Linguistics, EarlyView.ABSTRACT This study investigates the role of second language (L2) pride—an understudied affective factor—in shaping learners’ language learning motivation and involvement with informal digital learning of English (IDLE). Drawing on questionnaire data from 1388 Chinese university EFL students, the study employs structural equation modeling to examine ...
Minlin Minny Zou +3 more
wiley +1 more source
Research on the Fault Diagnosability Evaluation and Design of Affine Nonlinear System [PDF]
, 2017 实际系统大多是非线性的，难以利用线性系统理论建立故障可诊断性的判别条件，再加上噪声干扰的存在，更是在可诊断性评价中引入了随机影响。关于仿射非线性系统故障的可诊断性评价与设计，还没有形成普遍适用的方法。本文基于微分几何理论，针对仿射非线性系统、仿射非线性控制系统以及噪声作用下的仿射非线性系统，对系统故障可诊断性分析与设计方面进行研究，主要内容如下： 定义了非线性系统关于故障的能控性分布与能观性对偶分布。对于同一时间只有一个故障发生的仿射非线性系统，从系统分解的角度给出了非线性系统故障可诊断性的判定条件 ...
胡晓强
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Architectural design based on non-linear science [PDF]
, 2017 介绍了建筑非线性的定义,从突变、混沌、分形等角度,阐述了非线性建筑的重要形式语言,提出了新几何学、非线性结构、环境生态学等几种设计非线性建筑的新途径,以丰富建筑的外观形态。The paper introduces the definition of the non-linear buildings, illustrates the important language for the non-linear building, and points out the new channels for ...
解麒华
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International Journal of Applied Linguistics, EarlyView.ABSTRACT This paper examines the features of metadiscourse across different teacher moves in university linguistics classroom discourse and the teaching strategies reflected in its use. The results reveal that teachers employ diverse metadiscourse during classroom interactions to support student reasoning.
Jingjie Li, Wenjie Hu
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, 2018 几何非线性是土木工程结构在强震作用下动力时程分析过程中必要的考虑因素。该文基于数值子结构方法,结合平面Euler-Bernoulli梁柱单元的几何大变形理论,将平面框架结构的非线性分析转化为线弹性主结构的弹性分析,并提出材料和几何非线性修正力项,作为等效为外荷载项施加于主结构以考虑结构的双非线性。最后,对一平面钢框架结构进行地震动力时程分析,分析结果表明考虑了双非线性的数值子结构方法具有良好的精确性与高效性;同时,几何非线性对结构动力响应具有重要影响。国家自然科学基金项目(51261120376 ...
古泉, 孙宝印, 张沛洲, 欧进萍
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Journal of Linguistic Anthropology, EarlyView.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
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