Results 11 to 20 of about 13,996 (117)
International Journal of Applied Linguistics, EarlyView.ABSTRACT This study examines how foreign language teachers’ beliefs about the medium of instruction and translanguaging evolve over time by revisiting three in‐service teachers twelve years after their initial interviews. Using a qualitative longitudinal design, the study traces how translanguaging was initially framed as pedagogically deficient but ...
Danping Wang
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Gaoya dianqi, 2015 为了克服二维不均匀场流注仿真求解中数值求解复杂及难收敛的问题,笔者提出了一个准一维流注发展等效模型,实现了不均匀场中流注发展仿真。基于该流注发展等效模型,对典型的厘米级棒—板间隙中正流注发展微观物理过程进行研究,获得了空间电场、电势、电荷密度分布及流注发展速度等重要微观物理量的变化特性。同时讨论了等效模型中流注通道外形对流注放电物理特性的影响,确定了合理选择流注通道外形的原则。
董曼玲 +4 more
doaj
Gaoya dianqi, 2023 绝缘子表面积聚的电荷会畸变电介质表面电场进而引发沿面闪络。为研究空气氛围中绝缘介质表面在沿面流注放电发展过程中动态电荷积聚情况，在自主开发的二维流体沿面放电仿真模型中增加化学反应体系，模拟了正负极性沿面放电在起始及发展过程中流注自身特性以及介质表面电荷分布特性的演化过程。研究发现施加电压为负极性时，介质表面始终累计负电荷，沿面流注头部累积电荷量极高，流注头部后方界面处电场极性反转，正离子向介质表面运动；施加电压为正极性时，沿面流注头部累积正电荷，尾部电子朝介质表面扩散，介质表面总电荷量为负值。
李晓冉 +3 more
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The Academic Literacy of International Postgraduate Students in Australia: A Cause for Concern?
International Journal of Applied Linguistics, EarlyView.ABSTRACT This article discusses the academic literacy challenges faced by international postgraduate students at a South Australian university and evaluates the effectiveness of existing institutional support mechanisms. Drawing on survey data, the study highlights significant difficulties in academic reading, writing, and spoken communication, with ...
Werner Botha +6 more
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International Journal of Applied Linguistics, EarlyView.ABSTRACT Collaborative writing has attracted increasing attention in English as a Foreign Language (EFL) instruction due to its potential to enhance learners’ writing competence. However, few studies have examined the comparative effects of collaborative versus independent writing on EFL learners’ individual performance, especially in higher‐order ...
Ting Huang, Chenze Wu, Wenkang Zhang
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International Journal of Applied Linguistics, EarlyView.ABSTRACT Many existing rubrics for L2 argumentative writing prioritize form‐based linguistic accuracy and complexity while insufficiently addressing substantive argumentative rigor and effectiveness. This limitation is further complicated by cross‐cultural variation in rhetorical conventions and educational practices, which challenge the direct ...
Zihan Xu, Peiyun Liu
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特高压混合式MMC低全桥配比下单阀组投退过程中的均压控制 [PDF]
全球能源互联网, 2018 低全桥子模块配比的混合式模块化多电平换流器（modular multi-level converter，MMC）应用于高低阀组拓扑结构的特高压柔性直流系统时，在单阀组在线投入/退出过程中存在半桥子模块持续充/放电引起的子模块电压不均衡问题，严重影响系统安全。通过详细的理论分析，指出阀组投入/退出过程中桥臂电流不存在过零点是导致半桥子模块持续充放电问题的本质原因。为此提出了基于环流注入的单阀组投/退过程中的均压控制，在阀组投退期间控制MMC产生一定的相间环流，人为创造正负交替的桥臂电流，为半桥子模块充 ...
杨美娟 +5 more
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Scientists in power plays: How substantive were scientists' narratives during the COVID‐19 pandemic?
Policy Studies Journal, EarlyView.Abstract Scientists who provide expert advice must engage with policy processes. Little is known about whether and how scientists deal with the political dynamics of policy processes that are inherent to policymaking. We study this question by building on the policy dimension concept within the Narrative Policy Framework.
Jule Ksinsik, Caroline Schlaufer
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Resource Substitution: Local Governments' Issue Attention and Policy Reinvention
Policy Studies Journal, EarlyView.ABSTRACT Research on policy reinvention, where a government modifies rather than replicates policy innovations introduced by other governments, has progressed significantly, but how it is influenced by the government's issue attention has not been thoroughly examined.
Yingxin Zhang, Yixue Yao, Kaifeng Yang
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Lithium‐selenium (Li‐Se) batteries have attracted considerable attention due to their high theoretical specific capacity and the intrinsically good electronic conductivity of selenium. Nevertheless, low active‐material utilization, parasitic side reactions, and sluggish reaction kinetics hinder their practical application.
Yanan Fu +8 more
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