共享调节学习中的监控过程:理论模型与解释案例     

陈向东  陈佳雯  杨德全 《电化教育研究》2022,(2)

在共享调节学习的序列中,监控的目的在于确定团队尚未实现的内容,引导团队在需要的时候调整任务理解、目标计划和参与行为。对监控的测量、观察或分析,首先需要明确监控活动的基本过程。研究从监控的发生条件、内容维度、调节类型等方面梳理已有研究,据此构建共享调节监控的过程模型,探索监控的内在机制和动态过程。以上海市闵行区高中信息科技教研组的一次教研活动为解释案例,分析了协作中的监控过程,初步验证了模型的适切性。研究表明:“监控的产生”“识别与分析”“反思与评估”“调节与适应”四个阶段是按顺序进行的;监控活动主要由团队面临的困难和挑战所引起,其中,支架干预具有重要作用;虽然识别与分析会在很大程度上引起反思与评估,但是也有一部分会直接导致调节与适应;即便是成熟的教师协作团体,仍然存在一定程度的不适应行为,需要外界的干预和支持。通过对监控序列的剖析,可以开发相应的监控促进策略、干预支架和支持工具,优化共享调节的内部机制。文中个案也体现了共享调节及其监控活动在教师协作活动中的应用效果,对改进教师教研具有重要的实践意义。  相似文献   

基于SQL Server的能耗监测数据库设计     

马少华  解志杰 《科技广场》2012,(4):42-44

随着当今工业生产和科学研究对数据应用要求的日益提高,数据库技术已成为控制系统重要部分。本文依据国家机关办公建筑和大型公共建筑能耗监测数据库的相关技术导则对SQLServer数据库的组成进行了总结和概述,并按照相关技术导则的要求论述了能耗数据特点与数据表格的组成,对数据库表结构设计方法作了论述。该系统可操作性强,通用性好,快捷方便。因此,该研究成果将具有广泛的发展和应用前景。  相似文献   

数据存储系统安全浅析     

王冰冰 《科技广场》2012,(4):45-47

随着信息化的快速发展,企业数据量日益增加,信息就是财富,面对各种漏洞攻击和病毒破坏,为了确保企业财富的安全可靠,保障数据的可用性、可靠性,确保企业业务的持续性,必须规划可靠的安全方案和防护措施来满足用户的需要。  相似文献   

北京市大兴区耕地质量等级监测控制点布设   总被引：12，自引：3，他引：9  

胡晓涛  吴克宁  马建辉  赵华甫  王倩 《资源科学》2012,34(10):1891-1897

本文以北京市大兴区为例,把理论模型构建和实证分析相结合,探讨耕地质量等级监测控制点布设方法。大兴区耕地质量等级监测变异半径为3.72km,布设理论监测样点43个,监测样点的控制范围为1086hm2,但若考虑到土地利用规划、土壤类型（亚类）、自然等各等别面积比例、利用等各等别面积比例、土地整理项目区、样点覆盖全面性等因素,监测样点合理布设数应为46个才能满足研究区耕地质量等级监测工作精度要求。研究表明,变异函数理论模型在研究耕地质量等级监测样点布设过程中具有较为理想的应用价值,可以提高监测样点的代表性和耕地质量监测信息的完整性。  相似文献   

武钢冷轧厂酸洗区域控制系统中的WinCC监控方案     

胡凡  胡鸣 《教育技术导刊》2010,(2)

武钢二冷轧酸轧站酸洗线(PicklingLine)是由德国西门子(Siemens)公司进行软件编程调试的酸洗板生产线。该生产线工艺先进,技术含量高,自动化控制程度高。该线采用WinCC监控系统使其在网络硬件以及软件控制思路上相比其他传统生产线都具有一定的先进性。描述了西门子WinCC组态软件在武钢二冷轧酸洗线中的应用,并阐述了相关的系统功能。实践证明,WinCC监控在生产中的应用效果良好。  相似文献   

Students’ and teachers’ monitoring and regulation of students’ text comprehension: Effects of comprehension cue availability     

《Contemporary educational psychology》2019

For regulation of text learning to be effective, students need to accurately monitor their text comprehension. Similarly, to provide adaptive instruction, teachers need to accurately monitor and regulate students’ text comprehension. Performing generative activities prior to monitoring has been suggested to provide students with diagnostic cues, improving monitoring accuracy; an open question is whether this would also help teachers. We investigated whether two generative activities, diagram completion and diagram drawing, improved secondary education students’ (n = 248) monitoring and regulation accuracy of text comprehension (Experiment 1) and whether viewing students’ diagrams improved teachers’ (N = 18) monitoring and regulation of students’ text comprehension (Experiment 2). Students’ monitoring and teachers’ regulation accuracy was higher in the diagramming conditions than in the no-diagramming condition. Students and teachers used diagnostic cues when judging students’ text comprehension: Improving students’ monitoring and teachers’ regulation of students’ text comprehension relies on improving accessibility of diagnostic cues.  相似文献   

People who cheat on tests accurately predict their performance on future tests     

《Learning and Instruction》2020

Studies suggest that people who cheat on a test overestimate their performance on future tests. Given that erroneous monitoring of one's own cognitive processes impairs learning and memory, this study investigated whether cheating on a test would harm monitoring accuracy on future tests. Participants had the incentive and opportunity to cheat on one (Experiments 1, 2, and 3, with N = 90, 88, and 102, respectively) or two (Experiment 4, N = 214) of four general-knowledge tests. Cheating produced overconfidence in global-level performance predictions in Experiment 2 (Cohen's d ≥ 0.35) but not in Experiments 1 or 4. Also, cheating did not affect the absolute or relative accuracy of item-level performance predictions in Experiments 3 or 4. A Bayesian meta-analysis of all experiments provided evidence against cheating-induced overconfidence in global- and item-level predictions. Overall, our results demonstrate that people who cheat on tests accurately predict their performance on future tests.  相似文献   

基于SNMP的MRTG流量监测系统应用     

贾昌国 《教育技术导刊》2008,7(8):122-124

在日常网络管理维护的工作中,如何有效地监测网络流量而较小地干涉网络运行,是当前网络流量监测的热点。对SNMP网络管理模型及流量监测体系结构进行了介绍,利用MRTG建立了一个采用被动监测方式的流量监测系统。该系统可以实时地通过收集网络上路由器、交换机或者需要被监测设备上的状态数据直观地生成流量向量图,而对网络参数的测量基本上不会影响到网络的正常运行。列举了两个利用流量监测系统的应用实例。  相似文献   

三江水系(宜宾段)水质主要污染负荷分析     

黄飞  孙佑佳  郭宗锋  贺亮  周明罗  凌超发 《宜宾学院学报》2008,8(12)

在对2001—2005年期间长江上游“三江”（金沙江、岷江、长江）水系宜宾段6个控制断面水质监测资料进行统计分析的基础上,对“三江”水系水质主要污染负荷进行了分析。结果表明,高锰酸盐指数、BOD5、石油类、总磷、总氮、铅和镉7项指标所占的污染负荷比较大。利用主成分分析方法进行了污染源解析,结果表明“三江”水系宜宾段水质污染主要来源于沿岸化工企业污废水、城市生活污水和电子元器件类工厂废水。  相似文献   

Co-constructors of data,co-constructors of meaning: Teacher professional development in an age of accountability     

Leyton M. Schnellert  Deborah L. ButlerStephanie K. Higginson 《Teaching and Teacher Education》2008

This research examines how engaging teachers in collaboratively constructing situated assessments enhances teacher professional development, fosters meaningful shifts to practice, and supports productive conceptions of accountability. We conducted case studies of six teachers engaged as partners in investigating new approaches to assessing and fostering literacy. Findings suggested that supporting teachers to generate, interpret, and act upon assessment data within instructional change cycles assisted them in monitoring student performance, grounding instructional decisions in data, and enacting changes to practice. We also document how collaboratively constructing assessments with teachers supported conceptions of accountability considered meaningful by individuals adopting differing socio-political perspectives.  相似文献