Results 11 to 20 of about 1,155,773 (168)
, 2022 我们研究了非均匀旋转湍流中的科氏力效应。我们通过线性近似发现能量向慢速旋转区域进行输运,并且能量的分布正比于Ω_3~2(x_3),与数值模拟的结果一致。尺度上能量的能量分布是空间自相似的,反向级串会被非均匀效应所抑制。我们使用尺度能量的演化方程来研究物理空间-尺度空间上的能量联合输运过程。这一方程在尺度足够大时会退化为湍动能输运方程,这一结果也通过数值模拟进行了确认。另外,我们发现,科氏力对应的压力项在空间输运中起到了极为重要的作用。并且,慢速旋转区存在额外的尺度上的对流效应 ...
于长平, 李新亮, 胡润宁
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Journal of Adolescence, EarlyView.ABSTRACT Introduction Following rapid iterations in media technologies, Chinese millennials (born between 1980 and 1995) find themselves in a paradoxical state where digital saturation exists alongside fatigue, making them central practitioners of digital minimalist behavior.
Chao Zhang, Yinze Hao, Jingwen Li
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Inferring alternative ecosystem states with field survey data
Methods in Ecology and Evolution, EarlyView.Abstract Many ecosystems potentially exhibit alternative stable states, where distinct states can coexist under identical environmental conditions. While simulation models have generated key hypotheses in alternative stable states theory, they often rely on scale‐free parameters disconnected from real ecosystems.
Ning Chen +10 more
wiley +1 more source
Emerging applications of large language models in ecology and conservation science
Conservation Biology, EarlyView.Abstract Large language models (LLMs) mark a major development in artificial intelligence, with potentially transformative implications for ecology and conservation science. Built on advanced deep‐learning architectures, these models can support a wide range of tasks. We reviewed emerging applications of LLMs, drawing on the wider scientific literature
Christos Mammides +5 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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, 2023 钝体绕流引起的壁面压力脉动是气动/振动噪声的主要激励源.钝体绕流引起的流动较为复杂,无法直接采用基于平板边界层的模型直接模化壁面压力.因此,分析钝体绕流影响下的壁面压力在水下潜航器、汽车以及飞行器的自噪声和辐射噪声预测中具有重要意义.文章以理想汽车后视镜绕流为例,采用大涡模拟方法结合不同的亚格子湍流模型,开展了后视镜下游壁面压力脉动时空性质的数值研究.数值模拟中,壁面压力相关统计量如压力系数和频率谱与文献中的数值和实验结果均相符.藉由不同的相速度,在时空能谱中分离了壁面压力脉动的3个特征流动:对流 ...
刘伯峰, 吴霆, 朱力行
core
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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Policy Studies Journal, EarlyView.Abstract Studies of lobbying typically look at the extent to which interest groups realize political goals on issues they actively lobby for. Little is known, however, about the extent to which interest groups attain their political goals without making an active lobbying effort.
Marcel Hanegraaff +2 more
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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
wiley +1 more source