医学论文中ROC曲线应用错误例析     

王曼  徐春燕  施学忠 《编辑学报》2019,31(2):159-161

诊断试验是医学研究中重要的试验方法。ROC曲线是评价诊断试验价值的常用分析方法。目前医学研究中ROC曲线应用越来越广泛,涉及ROC曲线的医学论文也越来越多。文章对已发表的医学文献中ROC曲线应用方面,如有无必要绘制ROC曲线、ROC曲线形态是否错误、ROC曲线结果报告和解读等常常出现的错误,进行了举例,并分析错误原因,提出应对方法。  相似文献   

论青少年正确价值观的形成     

程曼  程东峰 《滁州学院学报》2011,(6):13-16

价值观是人们对客观事物的认识和把握。确立正确的价值观对于青少年的成长至关重要。婴幼儿时期的养成教育是青少年正确价值观形成的基础,树立远大理想和抱负、培养责任心和积极参加社会实践是青少年形成正确价值观的三大有效途径。  相似文献   

武汉市房地产政策实施效果偏差及解决办法     

李想  张婧  冯满 《湖北第二师范学院学报》2011,(5):77-81

2010年以来,我国连续2次推出房地产调控政策,2010年10月湖北省和武汉市为实施国家政策也相继出台了自己的房地产政策,本文详细介绍了武汉市房地产政策的出台背景、内容,实施房地产政策后武汉市房价及新房成交量波动的原因、政策实施效果偏差的原因和解决办法。  相似文献   

Formal and non-formal digital practices: institutionalizing transactional learning spaces in a media classroom     

Thomas de Lange 《Learning, Media and Technology》2011,36(3):251-275

This article examines how a classroom procedure known as PGE (Plan/Go-through/Evaluate) group work aims at integrating formal and non-formal media experiences and practices into classroom-based media learning. The study displays, on the one hand, how PGE group work emerged and was institutionally embedded in a media course. On the other hand, the study displays how students in this media course negotiated with their teachers by drawing on out-of-school media experiences and production practices in the process of planning classroom work. Empirically, the study draws on ethnographic observation of a vocational media studies course in the age range between 16 and 19 years at the upper secondary level in Norway. Video observations from several hours of PGE group work are analysed in order to document how students are involved in co-planning classroom work together with the course teachers. The analysis is based on cultural historical activity theory (CHAT). This theoretical position is applied in order to foreground tensions between formal institutional obligations and non-formal practices that surface in the classroom, and how an institutional measure such as PGE group work creates a transactional space for handling these differences.  相似文献   

Students�� Experiences of Autonomy, Competence, Social Relatedness and Interest Within a CSCL Environment in Vocational Education: The Case of Commerce and Business Administration     

Alexander Minnaert  Monique Boekaerts  Cornelis de Brabander  Marie-Christine Opdenakker 《Vocations and Learning》2011,4(3):175-190

To prepare students for effective workplace learning, it is necessary to have insight into the contextual characteristics that affect students’ developing interest. Aiming at students to become selfregulated learners, teachers should act as mindful coaches, encouraging their students to monitor the quality of collaborative group work. A field study was conducted within the context of a Computer Supported Collaborative Learning (CSCL) project fostering self-regulated learning. Students and teachers made use of an electronic instrument that assessed and visualised students’ experiences of the quality of group learning over time. 137 vocational students in commerce and business administration participated in a 6 months project requiring to work in small learning groups. A SEM model, based on self-determination theory, fitted the data quite well. Perceived autonomy, competence, and social relatedness seemed to be good predictors of students’ situational interest. Qualitative interview data revealed not only the added value of process-oriented reflection and within-group discussion, but also some shortcomings concerning the effectiveness of (implementing) CSCL.  相似文献   

语篇分类系统与意识形态——以《爱丽丝梦游仙境》的名词短语为例     

郭曼 《广东广播电视大学学报》2011,20(5):91-94

语言作为一种社会符号,其分类系统能反映人类对客观世界的认知,同时又反过来影响语言使用者认知世界的方式。批评语言学的分析方法论中,阐述了语言分类系统与意识形态密切相关。在《爱丽丝漫游仙境》的语篇中,名词短语作为其分类系统的重要组成部分,帮助了语言使用者建构梦幻世界、赋予该世界独特的秩序,体现了语篇的分类系统能反映语言使用者的意识形态并影响受众的认知方式。  相似文献   

Finding Support in Moodle： A Face-to-Face Chemistry Course for Engineers     

Carolina Armijo  de Vega  Lewis  McAnally-Salas 《美中教育评论》2011,(1):10-21

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Comprehension of the night and day cycle among French and Cameroonian children aged 7–8 years     

Frède  Valérie 《Cultural Studies of Science Education》2019,14(3):587-615

Cultural Studies of Science Education - In this article, we compared French and Cameroonian schoolchildren’s initial conceptions and comprehension of the night and day cycle in order to test...  相似文献   

Experimentation, “models” and the turn to practice     

Sanches de Oliveira  Guilherme 《Metascience》2020,29(3):395-398

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中华医学会电子版系列杂志特色栏目建设   总被引：2，自引：1，他引：1  

鲁玉红  王云亭  安京媛  吴贯军  安静  温少芳  王嫚 《编辑学报》2011,23(2):163-165

介绍中华医学会电子版系列杂志依托载体优势、表现形式优势、专家优势和渠道优势,创新性设置了视频栏目、精品课件、典型病例读片荟萃、专家风采、专家共识、临床病例荟萃、研究快报等特色栏目,其中视频栏目又包括手术演示、专家讲座、会议直击、腔镜操作演示、疑难病例讨论,从中展示了医学电子期刊的多媒体优势及其发展前景和面临的问题。  相似文献