延边地区圈养黑熊基因DNA中部分微卫星位点的探讨     

高建伟  张宏超  宋永一  金炯龙  崔正云 《黑龙江科技信息》2012,(33):250-252

本研究采用分光光度法及琼脂糖凝胶电泳比较从黑熊组织、血液以及毛发中提取的黑熊基因组DNA,发现提取的DNA浓度及纯度均可满足后续试验的需要。其中毛发DNA提取方法具有高灵敏度、操作简单、非损伤等特点,有助于开展珍稀濒危物种和性情凶猛动物的遗传特性研究。本文还根据文献中黑熊的11个微卫星位点设计并合成引物,进行了不同引物PCR最佳反应条件的筛选。对黑熊DNA基因组PCR扩增结果发现其中10对引物能扩增出较明显的扩增带,为后续的黑熊亲子鉴定及遗传特异性分析实验提供了有价值的资料,为其亲权概率的准确性提供了良好的参考依据。  相似文献   

外部环境、管控程度与子公司绩效     

陈志军  谢明磊 《科学学与科学技术管理》2012,33(9):91-97

采用问卷调查数据研究外部环境、母公司对子公司的管控程度以及子公司绩效之间的关系。结果表明,外部环境的慷慨性与子公司绩效显著正相关。环境复杂性会调节母公司对子公司的管控程度与子公司绩效之间的关系;当环境复杂性高时,母公司对子公司的管控程度越高,子公司绩效越差;当环境复杂性低时,母公司对子公司的管控程度越高,子公司绩效越好。环境慷慨性和动态性的调节作用不显著。  相似文献   

Metacognitive activities in text-studying and problem-solving: Development of a taxonomy     

Joost Meijer  Marcel V. J. Veenman  Bernadette H. A. M. van Hout-Wolters 《Educational Research and Evaluation》2013,19(3):209-237

This article describes the construction of a hierarchical taxonomy of metacognitive activities for the interpretation of thinking-aloud protocols of students in secondary education, who studied texts on history and physics. After testing an initial elaborate taxonomy on a restricted number of protocols by multiple raters, it appeared that the interrater correspondence was well below par. The categories in the taxonomy were too highly specified. Categories were combined and tested on new protocols in a cyclic fashion. The revised taxonomy was then used for coding 16 history protocols and 16 physics protocols. Frequencies of occurrence of metacognitive activities were obtained, as well as judgements of the quality of the metacognitive activities of the participants. There is a reasonable correlation between the frequency method and the quality method for coding thinking-aloud protocols. Also, there is a substantial covariation of the number of metacognitive activities across both tasks.  相似文献   

Home book reading and reading achievement in EU countries: the Progress in International Reading Literacy Study 2011 (PIRLS)     

Luisa Araújo  Patricia Costa 《Educational Research and Evaluation》2013,19(5-6):422-438

Home shared book reading during the preschool years is a strong predictor of students’ reading achievement in primary school, and, according to Sénéchal (2012), it can benefit more children from low socioeconomic status (SES) backgrounds. This study examines the association between frequency of book reading before the start of compulsory education and the reading achievement of 4th-grade students whose parents have high and low education levels in 22 European countries. Using data from the Progress in International Reading Literacy Study (PIRLS 2011), we show that the contribution of shared reading for the achievement of students from distinct SES backgrounds is different in different countries and that shared reading does not always benefit more children from low-SES backgrounds. Results are discussed in light of Sénéchal's home literacy model, the dynamics of cultural capital, and current policy efforts to support children's literacy development in European countries.  相似文献   

Parental perspectives of the role of school factors in school refusal     

Trude Havik  Edvin Bru  Sigrun K. Ertesvåg 《Emotional and Behavioural Difficulties》2013,18(2):131-153

The aim of this study was to explore parents’ perspectives on the role of school factors in school refusal (SR). Semi-structured interviews were conducted with 17 parents who had experienced SR with their own child. They identified several school factors related to SR. Some of these findings suggest that students who are prone to SR need more predictability and more teachers’ support than they sometimes get in school. Their need for predictability seems to occur particularly during less structured activities and during transitions in school. Findings also imply that disruptive behavior among classmates and harsh management from teachers affects perceived predictability and support for SR-prone students. All parents expressed concern about bullying, and roughly a third of them reported that their child had been a victim of bullying. Insufficient adaptation of schoolwork was also mentioned relatively frequently. Parents emphasized that adaptation of schoolwork needs to be done in close cooperation with the student and parents to avoid negative differentiation from classmates or stigma. Finally, several parents commented that teachers and schools need more knowledge about SR and felt that schools needed a more coordinated approach to supporting students who are at risk of SR.  相似文献   

大学生心理健康与父母养育方式、心理控制感的关系   总被引：8，自引：0，他引：8  

李祚山  唐加祥 《安徽师范大学学报(人文社会科学版)》2004,32(2):167-171

采用<心理卫生症状自评量表SCL-90>、<父母养育方式问卷>和<内控性、有势力他人和机遇量表>对295名大学生进行测量,探讨大学生心理健康与心理控制感和父母养育方式的关系.结果表明:大学生心理健康问题的检出率为25.8%;父母养育方式和心理控制感与大学生的心理健康都存在显著性的相关;心理控制感是某些父母养育方式和部分心理健康因子的中介因素;心理控制感的内控、机遇,父母养育方式中父亲的过度保护,母亲的拒绝否认因子对心理健康具有较强的预测效应.  相似文献   

父母养育方式与大学生人格特质的相关研究   总被引：1，自引：0，他引：1  

阎书昌  孟令勇 《石家庄学院学报》2005,7(3):65-68

为了探讨父母养育方式与其子女人格特质之间的相互关系,采用父母养育方式问卷(EMBU)和卡特尔16项人格特质问卷(16PF)两种方式对146名大学生进行了测查,结果发现:1)父母不良的教养方式,如严厉惩罚、拒绝否认、过分干涉,与被试的稳定性、有恒性、敢为性、自律性呈显著负相关,与敏感性、忧虑性、紧张性呈显著正相关.2)父母良性教养方式,如温暖、理解、平等,与被试兴奋性、稳定性、敢为性呈显著正相关,与敏感性、世故性呈显著负相关.这一结果说明父母养育方式对其子女人格特质形成具有重要的影响.  相似文献   

促进家长参与家校合作的国际经验及启示     

鞠佳雯  李妍  蒋柳青 《中国电化教育》2021,(5):33-38,62

有效的家校合作离不开家长参与,如何提升家长参与家校合作的积极性和有效性是我国教育中的重要问题。我国家长参与家校合作仍在起步阶段,面临积极性不高、方式单一和效果有待提升、不同家庭间差异较大等现实困境。鉴于家长参与家校合作的重要意义和我国目前面临的困境,该文基于国际经验,对我国如何促进家长参与家校合作提出了建议:构建和发展本土化家长参与的实践模式;根据不同家庭情况转变“以学校为中心”的工作思路;以及结合教师专业发展提升其引导家长参与的能力和动机。  相似文献   

父母消极控制与反馈对青少年社会适应的影响:黑暗人格与同伴关系的链式中介作用     

张杉  金灿灿 《中国特殊教育》2021,(2)

为探究父母消极控制与反馈、黑暗人格、同伴关系、社会适应的关系以及其内部作用机制,对1934名中学生采用整群施测法进行问卷调查。结果发现:1.父母消极控制与反馈、黑暗人格和积极社会适应呈显著负相关,和消极社会适应呈显著正相关;同伴关系和积极社会适应呈显著正相关,和消极社会适应呈显著负相关。2.控制了家庭社会经济地位的影响后,黑暗人格、同伴关系在父母消极控制与反馈对社会适应的影响中起链式中介作用。该研究验证和拓展了家庭社会化和社会学习等理论在青少年社会适应影响机制中的应用。  相似文献   

特殊学生家长融合教育满意度影响因素的模型建构与阐释——基于扎根理论的视角     

戴健雨  葛新斌 《中国特殊教育》2021,(2)

特殊学生家长的满意度是国家和地区"办好特殊教育"乃至"办好人民满意的教育"的重要依据指标。本研究采用基于扎根理论的深度访谈方法来探究特殊学生家长融合教育满意度的影响因素,以学生因素、家长因素和环境因素三大类属与障碍限制、身份特征、个人心态、知识基础、投入程度、政府支持、学校保障和社会助力八大主范畴以及类属之间、范畴之间的关联建构起一个立体式的理论模型,并对其进行了具体阐释。据此提出了分别以改善学生能力、提升家长素质和增强环境支撑为落脚点、着力点和关键点的政策建议。  相似文献