Results 31 to 40 of about 14,820 (116)
Shiyou jixie, 2015 油套管CO2腐蚀是目前我国海上油气田开发中的难点，常用的腐蚀预测模型多存在适用范围的局限性。机理研究表明，碳钢和低合金钢的腐蚀机理存在温度转变点，腐蚀机理的转变是导致预测模型适用范围受限、超出范围后精度较低的主要原因。针对这一问题，基于目前海上油套管设计使用的半经验腐蚀预测模型，建立了分段腐蚀预测模型。在大量腐蚀试验数据的基础上，建立了碳钢、1Cr、3Cr、9Cr和13Cr钢的腐蚀速率预测模型。误差分析结果表明，分段腐蚀预测模型能有效提高腐蚀速率预测的精度 ...
冯桓榰, 邢希金, 闫伟
doaj
Learning Styles, Engagement and Anxiety in AI‐Mediated Writing: A Multimodal Feedback Study
International 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
Gaoya dianqi, 2020 气体绝缘组合电器（gas insulated switchgear,GIS）设备局部放电存在安全隐患,不容忽视。文中采用特高频法研究GIS中典型局部放电过程,建立局部放电缺陷模型,进行大量试验获得数据。提取数据得到局部放电特征量,并采用局部放电特征谱图研究局部放电的特征。对特征量进行筛选、分类,选取不同类型特征量代入自回归移动平均模型中对GIS局部放电发展趋势的预测情况进行分析研究。结果表明:①对于局部放电线性参量,ARMA预测模型可以对其发展趋势进行准确预测,整体预测误差值均在10%以下 ...
何金 +7 more
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International Journal of Applied Linguistics, EarlyView.ABSTRACT In English medium instruction (EMI), students face cognitive and emotional demands in second language (L2) communication, which may hamper their motivation and willingness to communicate (WTC). Adopting a mixed‐methods design, this study explores how growth mindsets affected student motivation (e.g., ideal L2 self and ideal disciplinary self ...
Pengzhan Yang +2 more
wiley +1 more source
Spatially Downscaling of Future Food Demand for Policy Planning
World Food Policy, Volume 12, Issue 1, May 2026.ABSTRACT Understanding the subnational dynamics of food demand, while accounting for the evolution of the agrifood system at the global level, remains a challenge for designing food policy to ensure food security. To link global agrifood systems with subnational food policy planning, we downscale per capita food demand for 62 food commodities at the ...
Chun Song +3 more
wiley +1 more source
Gaoya dianqi, 2023 深度网络是预测变压器温度以进行火灾预防的常用方法，但标准训练数据的不足将限制预测模型的有效性。文中提出了一种用于变压器温度预测的基于物理场数据增强的深度网络。首先分析了铁心损耗原理，建立了损耗计算模型。然后探讨了变压器内部的热传递机理，并建立了热传递机制模型。将损耗计算模型和热传递机制模型相结合构建出物理场模型。通过对不同参数下变压器温度变化过程进行模拟，收集得到的数据可以用于增强深度网络的训练数据。最后，使用增强后的数据训练深度网络CAT-LSTM以进行温度预测。实验结果表明 ...
钟振鑫 +5 more
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Jellyfish blooms restructure plankton dynamics and trophic linkages in coastal waters
Functional Ecology, Volume 40, Issue 5, Page 1443-1460, May 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Jellyfish blooms are increasing globally in frequency and intensity, introducing complex ecological interactions, yet the mechanisms by which they alter ecosystem structure remain poorly characterized due to a lack of sustained field observations.
Pengpeng Wang +4 more
wiley +1 more source
International Journal of Applied Linguistics, Volume 36, Issue 2, Page 1282-1292, May 2026.ABSTRACT Self‐regulated learning (SRL) as a key predictor of language learning has been widely studied, but few studies have examined it from a cross‐linguistic perspective. The present study investigated whether first language (L1) SRL strategy use transfers to second language (L2) SRL strategy use and the conditions under which this transfer occurs ...
Barry Bai, Xuan Zang, Gurpinder Lailli
wiley +1 more source
Guangtongxin yanjiu, 2007 文章研究了利用Bass模型预测我国互联网用户数的方法。首先对Bass模型进行了描述,然后通过已有数据确定了Bass模型参数,最后利用该模型预测了我国互联网用户数并进行了误差分析。从预测结果中可以大致看出我国互联网用户达到饱和的时间,为今后带宽的预测打下了基础。文章最后给出了Bass模型的适用范围与参数确定方法,同时也提出了几种改善预测精度的方案。
陈晶晶, 毛谦, 刘国辉
doaj
Engineering Geometric Active Sites in Cobalt Spinel Oxides for Energy and Environmental Catalysis
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Cobalt‐based spinel oxides (Co3O4 and derivatives) are among the most promising transition metal oxides for electrochemical energy conversion and environmental catalysis due to their abundant active sites, structural tunability, and robust redox flexibility.
Shenning Liu +6 more
wiley +1 more source