Results 31 to 40 of about 1,485,481 (151)
International Journal of Applied Linguistics, EarlyView.ABSTRACT Self‐directed Learning (SDL) is an important skill for learners of all ages and phases of life. Generative AI facilitates self‐directed second language (L2) learning by providing interactive, personalised access to online resources. However, existing research on AI‐assisted self‐directed L2 learning focuses on adult learners in higher ...
Qing Ma +4 more
wiley +1 more source
四川大学学报. 自然科学版, 2015 首先,利用LiH实验光谱常数和同位素效应推导出LiT分子的光谱学常数.根据双原子分子的光谱学常数,力常数,解析势能函数参数同实验测量的光谱常数间的关系,推导出LiH和LiD分子的力常数和Murrel-Sorbie解析势能函数参数.其次,在核间距平衡点两侧谐振频率范围内取若干点,用量子化学QCISD(T)方法和6-311++(3df,2pd)基组对LiH及其氢同位素分子进行单点能计算,并在Born-Oppenheimer近似下用核动能对电子能量进行修正,而后进一步拟合为Murrel ...
刘东晓, 张莉, 杜际广, 蒋刚
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Jingshui jishu【目的】本文针对活性污泥2d号模型(ASM2d)参数众多、不确定性高的问题，开展参数敏感性分析，以识别关键参数、降低模型校准复杂度，为工艺模拟、校准与优化提供依据。【方法】本文以某污水厂厌氧-缺氧-好氧(AAO)工艺为对象，构建生物段处理工艺ASM2d模型，采用蒙特卡洛模拟结合拉丁超立方抽样，对筛选的39个模型参数进行全局敏感性分析，研究了不同模拟次数(78～210组)对分析结果的影响，并通过标准化回归系数量化参数对各出水指标的影响程度。【结果】当模拟次数达到156组以上时 ...
Zhu Jialu, Ma Yan
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How e‐Government Shapes Citizen Engagement in Participatory Budgeting
Latin American Policy, Volume 17, Issue 4, December 2026.ABSTRACT E‐government has been widely adopted to enhance citizen participation and improve transparency in public decision making. Yet, its effects on engagement remain context‐dependent and insufficiently theorized, particularly in Global South settings.
Sâmila de Sousa Rodrigues +1 more
wiley +1 more source
Gaoya dianqi, 2012 笔者提出一种新型单相并联混合型电力滤波方案。该方案采用磁通补偿原理和谐波电流分流技术,可以进一步降低APF所需容量,并有效改善滤波系统的性能。为分析该方案的相关特性,文中建立了它的稳态及暂态过程数学模型。重点分析PID控制器比例、积分、微分参数kp、ki、kd对暂态过程中的滤波特性和APF所需容量的影响,分析结果表明,控制器参数设置对滤波器暂态特性有重要影响,该分析为PID参数的设计提供了一定的理论参考。
刘卫民, 樊越甫, 刘方
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Latin American Policy, Volume 17, Issue 4, December 2026.ABSTRACT The public budget has been widely used as an indicator of government attention to measure the distribution of government priorities and the dynamics of budgetary changes across policy sectors. Shifting the debate and analytical locus on budget dynamics to Latin America, recent studies have applied the Punctuated Equilibrium Theory to the ...
Felipe Gonçalves Brasil +2 more
wiley +1 more source
Dianci bileiqi对电气设备地震动响应分析应用较多的主要有两种方法——振型分解反应谱法和动力时程法，其中某些关键动力参数的取值在电气设备抗震相关规范中并没有具体规定，实际分析时往往凭个人经验，致使分析结果因人而异、不尽准确。为了在计算分析阶段通过对关键动力参数准确取值，尽可能真实获取结构动力响应，本研究以特高压支柱式电气设备颇具代表性的两种材质的结构本体及加装减隔震装置后的结构为分析对象，在非线性时程分析方面，通过对动力时程法主要参数：振型参与阶数、地震波及峰值加速度的影响对比分析 ...
陈忆前, 潘飞, 彭伟, 刘洋
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Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT As the second most widely used metallic material after steel, research on the corrosion resistance of aluminum (Al) alloys holds great significance. To overcome the inherent limitations of experimental methods in capturing long‐term multifactor corrosion behavior of Al alloys, this review summarizes recent advancements in the multiscale ...
Yue Hou +3 more
wiley +1 more source
World Food Policy, Volume 12, Issue 2, November 2026.ABSTRACT This study explores environmental justice issues in coastal food systems, focusing on conflicts between small‐scale fisheries and the energy sector due to differing goals in managing food and energy sources. It does so by examining the interdependence between institutions, policies, and different types of knowledge; key elements in building ...
Mateus Henrique Amaral +6 more
wiley +1 more source
Gaoya dianqi, 2016 准确辨识超级电容器特征参数值是分析超级电容器电气特性和估计其健康状态的重要研究基础。为克服采用阻抗谱分析法辨识特征参数所需激励信号幅值过小,且不能反映研究对象真实工况以及难以实现在线辨识特征参数的缺点,文中采用递推最小二乘法解决此问题。基于实验分析结果发现直接采用该算法辨识出的参数值与真实值差异较大,因此在深入分析辨识算法的基础上,对最小二乘法的辨识结构加以改进。实验和仿真分析结果表明,基于改进后的最小二乘法辨识得到的超级电容器特征参数值更加准确和可信。
赵洋, 孙家南, 姜鸣
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