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Lughawiyah: Journal of Arabic Education and Linguistics, 2022 The purpose of this study is to determine the motivation of non-madrasa graduate students to learn Arabic at Department of Arabic Language Education of IAIN Kendari. The type of this research was descriptive qualitative in which data were collected by observation, interview, and documentation.
Rachmad Ramadhan, Kamilatul Ubudiyah
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International Scholarly Research Notices, Volume 2013, Issue 1, 2013., 2013 The present study explored the time course of neighborhood frequency effect at the early processing stages, examining whether orthographic neighbors with higher frequency exerted an influence on target processing especially at the phonological stage by using the event‐related potential (ERP). Thirteen undergraduate students were recruited in this study,
Jing Zhao +4 more
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考虑谐波谐振和电压稳定的海上风电场无功优化配置方法 [PDF]
, 2023 海上风电经长距离高压交流海底电缆接入电网，海底电缆容升效应显著，容易引起工频过电压，同时电力电子器件和线路电容引起的谐波谐振问题也严重影响着电网电能质量，因此进行海上风电场无功配置时应充分考虑过电压和谐波谐振问题。针对上述问题，建立了海上风电场谐波模型，对海上风电场的谐波模态阻抗进行扫描，继而分析海上风电场的谐振特性；然后研究了海上风电场无功特性，计算各种发电出力水平和并网点电压下的风电场无功缺额；接着以降低综合成本为目标，以静态电压稳定裕度、最小补偿容量、谐波谐振及过电压为约束 ...
杜婉琳*, 梅桂华, 王玲, 马明
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Dianci bileiqi, 2023 高速铁路特殊运行方式会产生大量的谐波，谐波会通过牵引变压器传入220 kV侧高压电缆，在电缆护层上产生谐波电压，威胁电缆的安全运行。笔者在牵引变电所现场实测谐波数据的基础上，建立了基于实测数据的谐波源模型，解决了谐波源建模复杂的问题并能准确反映出高铁列车的实际运行状况。在此基础上仿真计算了高铁在牵引、再生制动和惰性3种工况下220 kV侧电缆护层谐波电压特性，探究了电缆长度、电缆接地方式、谐波电流参数等对谐波电压的影响规律。结果表明：高铁不同运行方式下，护层谐波电压均远超过工频正常运行情况 ...
方春华 +7 more
doaj
基于ABAQUS的谐波减速器装配及运转过程中柔轮的力学响应分析 [PDF]
, 2017 该文设计了一种谐波减速器,基于ABAQUS建立了谐波齿轮减速器的三维有限元模型,采用接触非线性分析，分别进行了装配和动态运转过程的仿真，以获得谐波齿轮减速器关键柔性件柔轮的应力应变响应。计算结果说明：由于轴承滚珠的作用，在柔轮长轴处的齿圈中与分布滚珠相对应的位置,因变形不均匀而产生较大的应力集中;装配后柔轮最大应力位于齿根处，在动态运转状态下最大应力位于齿宽中间位置的齿顶啮入接触处。该结果对谐波齿轮减速器的结构设计改进提供了一个重要的参考。本研究受国家自然科学基金(项目编号:No.51475396 ...
冮铁强, 杨健, 田洪宇, 陈立杰
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Capacitor Voltage Ripple and Harmonics Analysis in MMC [PDF]
, 2023 [Introduction] The rapid development of VSC-HVDC provides practical support for MMC (Modular Multi-Level Converter) topology. Takes a half bridge MMC converter as an example, the relationship between steady-state capacitor voltage fluctuation, harmonic ...
Gang LI +4 more
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Research on Structural Design and Mechanical Behavior of Double Arc Tooth Profile Harmonic Drive [PDF]
, 2015 谐波齿轮减速器是一种传动精度高、减速比大并能够在密闭空间传动的齿轮传动机构，应用领域广泛，尤其在航空航天领域有不可替代的优势。常用的渐开线齿廓齿根处会出现应力集中以及齿顶产生尖点啮合现象，影响其承载性能和啮合质量。双圆弧齿形谐波齿轮以其良好的承载能力与啮合性能逐渐成为研究热点，本文根据谐波齿轮设计理论设计了双圆弧谐波齿轮装置，并对其结构性能、接触特性以及动力学等方面的分析，探索相关规律，为后续在结构优化、增强啮合性能提供了一定的理论依据。 论文主要包括以下几方面内容： 1 ...
王萌萌
core
Rare Metals, Volume 44, Issue 11, Page 8161-8197, November 2025.Graphical abstract AbstractThe studies on the synthesis of two‐dimensional (2D) Janus materials have made significant progress over the years. They offer new opportunities to increase the potential usage of Janus transition metal dichalcogenide (TMDC) materials in different application areas due to their unique structural, electrical, optical and ...
Ayça Coşkun +9 more
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Behavior of a Flexspline in Harmonic Drive [PDF]
, 1900 谐波齿轮传动是利用柔性工作构件的弹性变形波进行运动或者动力传递的一种新型传动方式，因其具有体积小、重量轻、精度高、单级传动比大、承载能力高等诸多优点，在航空航天、机器人、数控机床等领域得到了广泛的应用。柔轮作为谐波齿轮传动的关键构件很大程度上影响了谐波齿轮传动的承载能力、使用寿命等。柔轮为弹性薄壁件，在交变载荷作用下易导致齿面磨损和疲劳断裂。柔轮强度、变形与应力分析对谐波齿轮传动过程中的疲劳断裂评估及传动性能研究具有重要的意义。 本文首先根据已知参数、实际工况和谐波齿轮传动啮合参数选取原则 ...
刘淳剑
core
China's Eco‐Civilisation, Climate Leviathan, and Hobbesian Energy Transition
Antipode, Volume 57, Issue 3, Page 830-861, May 2025.Abstract Scholars have hitherto tended to theorise China's ecological civilisation project either as a form of environmental authoritarianism or as a vision of eco‐socialism. This paper contributes to the conversation by conducting a textual analysis of Chinese scholarly discussions on eco‐civilisation.
David Chen
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