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Can ECE Classes Sustainably Empower Preschool Children’s Development?-A Longitudinal Study of the Role of ECE Classes in Children’s Learning and Development

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Frontiers of Education in China 2024年第1期19卷 83-98页

作者： SHI Jin XUE Haiping fang chenchen College of Preschool Education Capital Normal UniversityBeijing 100048China College of Education Capital Normal UniversityBeijing 100048China Graduate School of Education Peking UniversityBeijing 100871China

Does enrolling children aged 0-3 in early childhood education(ECE)classes continuously empower their learning and development after entering kindergarten?Based on the tracking survey data of 664 children aged 3-6 in 2017 and 367 children aged 3-6 in 2018,this study uses Propensity Score Matching to analyze this *** findings reveal that children’s family socioeconomic status is a key factor influencing their participation in ECE *** baseline data show that participation in ECE classes does not significantly improve children’s learning and ***,the follow-up data show that participation in ECE classes plays a significant negative role in motor development for children moving to their second year of kindergarten,but subsequently plays a positive role in language development,health,and safety for those entering their third year of ***,participation in ECE classes plays no continuous positive role in children’s learning and development after they enter *** on these findings,it is suggested that parents should respect the natural laws of child development instead of blindly following the trend of attending ECE classes,and high-quality parental companionship is *** Chinese government is supposed to implement policies such as“double reduction”to regulate ECE institutions that fail to operate in good faith.

关键词： early childhood education(ECE)classes preschool children’s learning and development “double reduction”

China Survey Report on High Schools'Online Learning Status During the Pandemic

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ECNU Review of Education 2024年第1期7卷 182-194页

作者：郭丛斌徐柱柱方晨晨秦博 Peking University

●We examined the results of a large-scale national survey of online secondary education in *** online survey of 33,194 high school students and 5,667 teachers has provided comprehensive and representative data regarding the quality of online education and its implementation during the pandemic.●Questionnaire surveys administered to students and teachers in different grades and comparative analysis of different cohorts revealed group heterogeneity of the online learning effect.●The findings have elucidated the emergency teaching situation in China during the pandemic,yielding targeted suggestions for school education following the resumption of classes.

关键词： China high school online learning pandemic survey report

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基于固态断路器主动注入式直流故障测距方法

电工技术学报 2024年第8期39卷 2360-2370页

作者：王伟帅智康李杨何梨梨方辰晨湖南大学电气与信息工程学院长沙410082

随着直流配电网的快速发展与深化应用,准确可靠的故障测距技术对直流故障检修和恢复至关重要。该文提出一种基于固态断路器(SSCB)主动注入式直流故障测距方法。首先,利用SSCB开断主动注入不同脉冲宽度的信号,并检测注入脉冲首末端和反... 详细信息

随着直流配电网的快速发展与深化应用,准确可靠的故障测距技术对直流故障检修和恢复至关重要。该文提出一种基于固态断路器(SSCB)主动注入式直流故障测距方法。首先,利用SSCB开断主动注入不同脉冲宽度的信号,并检测注入脉冲首末端和反射波首末端的时间差作为注入波形传播时间间隔,能够减小采样频率带来的误差。然后,提取电缆线路电压线模量作为检测量,削弱正负极线路之间的耦合作用,获得稳定波速。最后,基于小波变换原理提出改进自适应模极大值方法来检测脉冲首末端时刻,减小噪声和过渡电阻对测距精度的影响。仿真结果表明,基于SSCB主动注入式测距方法在直流配电网单极接地和极间短路故障情况下均能够实现准确且快速的定位。

关键词：直流配电网故障测距固态断路器主动注入自适应模极大值

针刺四海输注穴治疗顽固性周围性面瘫临床疗效观察

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中国针灸 2024年第8期44卷 894-898页

作者：方晨晨胡先峰沈梅红南京中医药大学针灸推拿学院·养生康复学院江苏南京210023 六安市中医院安徽六安237001

目的:观察在常规针刺基础上针刺四海输注穴治疗顽固性周围性面瘫的临床疗效。方法:将52例顽固性周围性面瘫患者随机分观察组(26例,脱落2例)和对照组(26例,脱落1例)。观察组在常规针刺(取穴:印堂,患侧阳白、地仓等)基础上予针刺四海输注... 详细信息

目的:观察在常规针刺基础上针刺四海输注穴治疗顽固性周围性面瘫的临床疗效。方法:将52例顽固性周围性面瘫患者随机分观察组(26例,脱落2例)和对照组(26例,脱落1例)。观察组在常规针刺(取穴:印堂,患侧阳白、地仓等)基础上予针刺四海输注穴(百会、大椎及双侧上巨虚、下巨虚、足三里);对照组在常规针刺基础上于观察组四海输注穴对应非经非穴点行浅刺。两组均留针30 min,隔日1次,每周治疗3次,连续4周。分别于治疗前后观察两组患者House-Brackmann(H-B)面神经分级和面神经功能评分系统动态观评分,并于治疗后评定两组临床疗效。结果:治疗后,两组患者H-B面神经分级优于治疗前(P0.05);观察组痊愈率为62.5%(15/24),高于对照组的20.0%(5/25,P<0.05)。结论:在常规针刺基础上,针刺四海输注穴可有效治疗顽固性周围性面瘫,改善患者面神经功能,提高痊愈率。

关键词：顽固性周围性面瘫针刺四海输注穴面神经功能随机对照试验

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八年制临床医学教育质量的学生评价与分析

医学与哲学 2024年第7期45卷 70-75页

作者：方晨晨李曼刘璐王丹谢阿娜北京大学全国医学教育发展中心/医学教育研究所北京100191

基于全国11所八年制临床医学教育培养单位的毕业生调查数据,从培养入口、培养过程和培养出口三个层面对我国八年制临床医学生的培养状况、就读体验和职业发展进行实证分析。结果表明,我国八年制临床医学教育存在培养目标定位不够明确、... 详细信息

基于全国11所八年制临床医学教育培养单位的毕业生调查数据,从培养入口、培养过程和培养出口三个层面对我国八年制临床医学生的培养状况、就读体验和职业发展进行实证分析。结果表明,我国八年制临床医学教育存在培养目标定位不够明确、教学方法较为单一、部分课程质量不高、毕业生科研能力发展欠佳、工作负担较重、职业满意度不高等挑战。为了提高八年制临床医学教育培养质量,要进一步从强化学生学习动机、丰富教育教学方法、重视学生科研能力培养、提高课程质量、明确培养目标、做好学生职业生涯规划等方面不断加以完善和改进。

关键词：八年制医学教育培养质量教学改革

“填精益智”针刺法治疗轻度脑卒中后认知功能障碍的疗效及对血清同型半胱氨酸的影响

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安徽中医药大学学报 2024年第2期43卷 53-56页

作者：方晨晨韩冰朱永磊方无杰安徽中医药大学附属六安市中医院安徽六安237001

目的探讨“填精益智”针刺法对轻度脑卒中后认知功能障碍(post-stroke cognitive impairment,PSCI)患者认知功能和血清同型半胱氨酸(homocysteine,Hcy)的影响。方法将116例轻度PSCI患者随机分为对照组(n=58,实际纳入研究55例)、针刺组(n... 详细信息

目的探讨“填精益智”针刺法对轻度脑卒中后认知功能障碍(post-stroke cognitive impairment,PSCI)患者认知功能和血清同型半胱氨酸(homocysteine,Hcy)的影响。方法将116例轻度PSCI患者随机分为对照组(n=58,实际纳入研究55例)、针刺组(n=58,实际纳入研究54例)。两组患者均给予基础干预、康复训练,对照组另口服多奈哌齐5 mg,每晚1次,每周7次,连续治疗8周;针刺组在对照组治疗基础上予以“填精益智”针刺法治疗,每次治疗30 min,每日治疗1次,每周治疗6次,疗程为8周。观察和比较两组患者治疗前后蒙特利尔认知评估(Montreal cognitive assessment,MoCA)量表评分、简易精神状态检查(mini-mental state examination,MMSE)量表评分、Barthel指数(Barthel index,BI)、血清同型半胱氨酸(homocysteine,Hcy)水平,并基于MMSE量表评分进行疗效评价。结果治疗后两组患者MoCA量表评分、MMSE量表评分、BI均显著增加(P<0.05),血清Hcy水平显著降低(P<0.05),且针刺组MoCA量表评分、MMSE量表评分、BI增加程度,Hcy水平降低程度均显著大于对照组(P<0.05);针刺组临床疗效优于对照组(P<0.05)。结论“填精益智”针刺法可以明显改善轻度PSCI患者的认知功能以及日常生活能力,减轻Hcy对脑功能的损害,保护脑功能。

关键词：脑卒中轻度认知功能障碍填精益智多奈哌齐

Supplementary Tutoring for Compulsory Education Students in China:Status and Trends

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ECNU Review of Education 2018年第3期1卷 36-68页

作者： Haiping Xue chenchen fang Institute of Educational Economics and Management College of EducationCapital Normal University Institute of Educational Economics Department of EducationBeijing Normal University

Purpose-The purpose of this paper is to explore the current status of,and developmental trends affecting,the participation in supplementary tutoring by compulsory education students in ***/Approach/Methods-Based on the data from the China Family Panel Study(CFPS)conducted by the Peking University Institute of Social Science Survey in 2010,2012,2014,and 2016,the paper uses the method of multilevel linear model to comprehensively analyze problems involving a multilevel data ***-The paper finds that the proportion of compulsory education students participating in supplementary tutoring(and the expenditure on such tutoring)increased annually before declining in *** with higher socioeconomic status,higher school quality,and better academic performance have a higher tutoring participation rate and also spend more on *** in China’s three northeastern provinces and eastern coastal areas have higher participation rates in tutoring and higher tutoring ***/Value-Supplementary tutoring in China already has its own developmental patterns and trends;however,few scholars have empirically studied the developmental patterns and trends of supplementary tutoring in compulsory education based on longitudinal survey data.

关键词： Compulsory education supplementary tutoring shadow education developmental trends

The effect of volatile components in oil on evolutionary character- istics of diamondoids during oil thermal pyrolysis

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Science China Earth Sciences 2016年第2期59卷 362-370页

作者： fang chenchen XIONG YongQiang LI Yun LIANG QianYong WANG TongShan LI YongXin Research Institute of Petroleum Exploration and Development Beijing 100083 China State Key Laboratory of Organic Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China Guangzhou Marine Geological Survey Ministry of Land and Resource Guangzhou 510760 China

On the basis of the results of simulation experiments, now we better understand the contribution of high carbon number hydrocarbons to diamondoid generation during thermal pyrolysis of crude oil and its sub-fractions(saturated, aromatic, resin, and asphalene fractions). However, little is known about the effect of volatile components in oil on diamondoid generation and diamondoid indices due to the lack of attention to these components in experiments. In this study, the effect of volatile components in oil on diamondoid generation and maturity indices was investigated by the pyrolysis simulation experiments on a normal crude oil from the HD23 well of the Tarim Basin and its residual oil after artificial volatilization, combined with quantitative analysis of diamondoids. The results indicate that the volatile components(≤n C12) in oil have an obvious contribution to the generation of adamantanes, which occurs mainly in the early stage of oil cracking(Easy Ro<1.0%), and influences the variations in maturity indices of adamantanes; but they have no obvious effect on the generation and maturity indices of diamantanes. Therefore, some secondary alterations e.g., migration, gas washing, and biodegradation, which may result in the loss of light hydrocarbons in oil under actual geological conditions, could affect the identification of adamantanes generated during the late-stage cracking of crude oil, and further influence the practical application of adamantane indices.

关键词： Crude oil Volatile component Thermal pyrolysis Diamondoids Evolution characteristics

Re-Examination of the Oil and Gas Origins in the Kekeya Gas Condensate Field,Northwest China——A Case Study of Hydrocarbon-Source Correlation Using Sophisticated Geochemical Methods

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Acta Geologica Sinica(English Edition) 2017年第1期91卷 186-203页

作者： GONG Deyu WANG Zhaoyun LIU Gang CHEN Gang fang chenchen XIAO Zhongyao Research Institute of Petroleum Exploration and Development PetroChina Tarim Oilfield Company PetroChina

This work discussed the origins, alteration and accumulation processes of the oil and gas in the Kekeya gas condensate field based on molecular compositions, stable carbon isotopes, light hydrocarbons, diamondoid hydrocarbons and biomarker fingerprints. A comparison study is also made between the geochemical characteristics of the Kekeya hydrocarbons and typical marine and terrigenous hydrocarbons of the Tarim Basin. Natural gas from the Kekeya gas condensate field is derived from Middle–Lower Jurassic coal measures while the condensates are derived from Carboniferous–Permian marine source rocks with a higher maturity. In the study area, both natural gas and condensates have experienced severe water washing. A large amount of methane was dissolved into the water, resulting in a decrease in the dryness coefficient. Water washing also makes the carbon isotopic compositions of the natural gas more negative and partially reverse. Considering that the gas maturities are higher than once expected, gas generation intensity in the study area should be much stronger and the gas related to the Jurassic coal measures could promise a greater prospecting potential. As a result of evaporative fractionation, the Kekeya condensates are enriched in saturates and lack aromatics. Evaporative fractionation disguises the original terrigenous characteristics of the light hydrocarbons associated with the natural gas, making it appear marinesourced. Thus, alteration processes should be fully taken into consideration when gas–source correlations are carried out based on light hydrocarbons. With the condensates discovered in the study area all being ＂migration phase＂, the pre-salt Cretaceous and Jurassic reservoirs may promise great exploration potential for the ＂residual phase＂ hydrocarbons. This research not only is of significance for oil and gas exploration in the southwest Tarim Basin, but also sheds light on the oil/gas-source correlations in general.

关键词： Kekeya gas condensate field evaporative fractionation water washing coal-derived gas marine condensates stable carbon isotopes diamondoid hydrocarbons