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Family Process, Volume 61, Issue 3, Page 1208-1228, September 2022., 2022 Abstract The COVID‐19 pandemic has affected nearly every area of daily life, including romantic relationships. With the pandemic still ongoing, this study reviewed the existing scholarly literature to document the status of empirical research on how COVID‐19 has affected couples during its first year.
Roi Estlein +2 more
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Key n‐Gram Extractions and Analyses of Different Registers Based on Attention Network
Journal of Applied Mathematics, Volume 2021, Issue 1, 2021., 2021 Key n -gram extraction can be seen as extracting n‐grams which can distinguish different registers. Keyword (as n = 1, 1‐gram is the keyword) extraction models are generally carried out from two aspects, the feature extraction and the model design.
Haiyan Wu +5 more
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Dianci bileiqi, 2022 电力系统中一般采用等值盐密和等值灰密来描述绝缘子表面的染污程度。其中，等值盐密和等值灰密分别表征了绝缘子表面单位面积可溶性污秽和不可溶污秽的量。运行部门一般利用滤纸过滤称重的方法测量绝缘子的等值灰密，但由于缺乏细致的测量规范，等值灰密测量值有一定分散性。为了研究灰密测量的影响因素，笔者从滤纸烘干温度、烘干时间、滤纸饱和重量及冷却时间4个方面出发，研究了上述因素对滤纸质量法中滤纸干燥程度的影响，在此基础上，给出了灰密的测量程序。试验结果表明，滤纸烘干温度为110℃,烘干时间15 min的 ...
燕宝峰 +6 more
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Shuitu Baochi Xuebao, 2023 为研究外源添加物对土壤干缩裂缝特征的影响,选取水田、旱田、林地3种土地利用方式,添加生石灰(1 g/kg)、黄腐酸(10 g/kg)、鱼塘底泥(250 g/kg)、生物炭(15 g/kg)4种外源添加物,进行土壤干燥收缩试验。结果表明:除生石灰外,不同土壤外源添加物处理下各用地类型土壤干燥收缩裂缝特征变化趋势非常一致,裂缝面密度、长密度、平均宽度均呈现耕作层水田＞旱田＞林地、犁底层水田＞林地＞旱田。生石灰对土壤干燥收缩裂缝特征无显著影响;黄腐酸使土壤干缩裂缝面密度、裂缝平均宽度增加 ...
陈上茂 +6 more
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Ultrasound in Obstetrics &Gynecology, Volume 65, Issue 1, Page 85-93, January 2025.ABSTRACT Objective Accurate differentiation between placenta accreta spectrum (PAS) and uterine‐scar dehiscence with underlying non‐adherent placenta is often challenging, even for PAS experts, both prenatally and intraoperatively. We investigated the use of standardized two‐dimensional grayscale ultrasound and Doppler imaging markers in ...
T. Adu‐Bredu +3 more
wiley +1 more source
Jurnal Teknologi Pendidikan : Jurnal Penelitian dan Pengembangan PembelajaranThe current presence of the internet undeniably facilitates and accelerates individuals' ability to access and disseminate information, even leading to an information explosion. To manage this situation, digital competence is required to face the 6.0 era.
Aiga Ventivani +3 more
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Gaoya dianqi, 2009 笔者分析了灰密的概率密度分布,并推导出盐密与灰密的联合概率密度函数。在不考虑灰密和考虑灰密两种情况下,利用概率统计方法,推导出在恒定电压下,绝缘子的污闪概率计算方法,为评估线路可靠性、调度部门决策、绝缘子的维护以及新线路绝缘子的选型提供依据。
牛春节, 程养春
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Gaoya dianqi, 2014 输电线路在污秽条件下的闪络（污闪）是威胁电力系统安全运行的主要事故。笔者以两片串的绝缘子短串为研究对象,通过对绝缘子两端施加0.5/5μs和2.6/50μs的冲击电压波形,研究了盐密、灰密污秽度对绝缘子闪络特性的影响,同时对波头时间不变,波尾时间对绝缘子闪络特性的影响进行了研究。结果表明,盐密对绝缘子闪络电压的影响大于灰密;当盐密、灰密值较低时,冲击电压波形对绝缘子串闪络电压影响不大;灰密值固定时,绝缘子闪络电压随着盐密值的增加而减小;而当盐密值固定时 ...
彭波 +6 more
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Dianci bileiqi, 2018 为比较不同伞型、材质绝缘子相同环境下的自然积污特性及污耐压性能,在浙江嘉兴选取典型污源附近杆塔,对XP-70、LXY-70、FC70P、XWP2-70四种绝缘子进行同塔悬挂,经历2年自然积污后对盐密（ESDD）、灰密（NSDD）进行了测试分析,并以此为基础对不同绝缘子的污闪梯度进行了比较。分析结果表明,伞型对绝缘子积污盐密、灰密有显著影响,标准型绝缘子XP-70积污盐密、灰密约为双伞型XWP2-70相应值的2. 1、1. 5倍,钟罩型FC70P积污盐密、灰密约为标准型LXY-70相应值的1.
李特 +4 more
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Dianci bileiqi, 2016 针对不溶物在盘形悬式绝缘子污秽试验中的作用,对型号为CA-872EX、FC12P/146和FC120/146盘形绝缘子进行了人工污秽试验（固体层法）。本文认为污闪电压随灰密增加而下降（等值盐密恒定为0.1 mg/cm2）,下降的特征与与绝缘子伞形和不溶物的比表面积有关,当灰密超过1.0 mg/cm21.5 mg/cm2,污闪电压下降趋于缓和,传统的钟罩型绝缘子（对比同等级普通型绝缘子）对于污秽中灰密增加敏感,抗高灰密能力不佳,比表面积也是引起污层吸附与瓷件或者结块的重要原因,当泄漏电流硅藻土中达到38 ...
李钊, 袁田, 邹炜, 张锐
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