Results 21 to 30 of about 999,978 (161)
Gaoya dianqi, 2021 电缆的传播常数、特征阻抗、相速度的高频特性表征了电缆的高频传输特性,而准确获取电缆的高频传输特性是电缆故障定位的基础。文中针对现有测试技术的不足,提出了基于电缆阻抗谱的同轴电力电缆高频传输特性获取方法,研究结果表明:在300 kHz～100 MHz频率范围,随着频率的增大,衰减常数和相移系数近似线性增大;相速度随频率的增大略有增加,并趋于稳定值;受测量接线处附加电感和附加电容的影响,特征阻抗的高频特性出现较为严重的畸变。
张丹丹 +7 more
doaj
Institutional lessons from the Nordic management model
Conservation Biology, EarlyView.Abstract To improve wildlife management outcomes, in terms of reaching management goals and increasing legitimacy, Nordic countries have developed institutional systems involving stakeholders that aim for a more inclusive and participatory model.
Jens Nilsson +2 more
wiley +1 more source
Conservation Biology, EarlyView.Abstract In response to demand for better biodiversity stewardship from the private sector, frameworks such as the Taskforce on Nature‐related Financial Disclosures (TNFD) have been developed to help companies assess, manage, and disclose their nature‐related impacts, dependencies, risks, and opportunities.
Takuya Nomura +3 more
wiley +1 more source
Conservation Biology, EarlyView.Abstract Robust estimates of the magnitude of protected species bycatch are essential for effective fisheries management and marine conservation. Existing bycatch estimation methods typically struggle to accurately and precisely estimate the bycatch of rare species as a result of the statistical assumptions necessary to overcome infrequent encounters ...
Christopher Long +3 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2021 目的探讨研究年龄相关性听力障碍发病情况及老年前期筛查的可行性。方法选取2017年4月至2020年4月间在新华医院崇明分院进行听力检测的300例受试者为研究对象,根据年龄分组:31-40岁组,60例;41-50岁组,132例;51-60岁组,70例;61-70岁组,27例;71-80岁组,8例;80岁以上组,3例,对受试者进行纯音听力测试,记录受试者听力正常、言语频率听阈正常但是高频音下降、言语频率纯音听阈情况。结果 31-40岁组听力听力受损率最低,为6.67%,随着受试者年龄增加,听力受损率逐渐增高 ...
周健
doaj
International Journal of Applied Linguistics, EarlyView.ABSTRACT This study examines multilingual practices in research interviews, focusing on English lexical insertions in Chinese‐language research interviews with teachers of Chinese in Australian secondary schools, and treating these code‐switches as analytically meaningful rather than incidental.
Chengwen Yuan, Tianwei Zhang, Gary Bonar
wiley +1 more source
International Journal of Applied Linguistics, EarlyView.ABSTRACT Oral interaction plays a facilitative role in second language acquisition. While numerous studies have explored adult learners’ interactions, research that has examined young learners’ interactions, especially among Chinese as a second language learners (CSLs), is lacking. This study focused on CSLs and Chinese‐speaking students (CSSs) in Hong
Jing Yan
wiley +1 more source
Exploring English Language Learners’ Vocabulary Knowledge and Usage When Speaking
International Journal of Applied Linguistics, EarlyView.ABSTRACT Vocabulary forms a fundamental component of speaking ability, as it enables speakers to convey meaning accurately, fluently, and effectively. Although the relationship between vocabulary and speaking has been investigated to some extent, gaps remain in understanding the link between learners’ vocabulary knowledge and their speaking proficiency,
Junyan Guo, Martin East
wiley +1 more source
Off‐Task Talk to Manage Relationship Work During Student Group Work in Second Language Classrooms
International Journal of Applied Linguistics, EarlyView.ABSTRACT This paper presents a conversation analytic study on student relationship work in off‐task talk (OTT) during group work in foreign language classrooms. Often seen as disengagement from tasks, OTT's social and relational functions in student classroom group interaction and formation remain underexplored.
Yanyan Li
wiley +1 more source
, 2015 本发明公开一种测量高频率信号相位变化的数字相位计及其方法，所述数字相位计包括依次相连的高频率信号混频降频电路、AD转换器和核心算法运算电路，所述高频率信号混频降频电路用于将输入的待测高频信号滤除直流部分，并降低高频信号的频率；所述AD转换器用于将高频率信号混频降频电路输出的待测模拟信号转换为待测数字信号；所述核心算法运算电路用于测量所述待测数字信号的初始频率，并根据所述初始频率产生正交信号，并将正交信号与待测数字信号混频、降频为直流信号，再经反正切运算得到待测高频信号的相位变化 ...
李玉琼 +4 more
core +1 more source