关于电气专业电工仪表与测量教学方法的几点思考     

孟宪微 《科教文汇》2014,(12):121-121,123

电工仪表与测量是一门实践性很强的专业基础课程,是中等职业教育电子与信息技术专业的核心课程。专业课程教师能否选择适当的教学方法进行课堂教学,是提高教学质量的关键。将精心组织教学内容,细心选择教学方法,耐心强化实践环节三步骤结合,可以有效实现教学目标。  相似文献   

面向卓越工程师培养计划的“测试技术”教学改革研究与实践     

王恒  花国然  黄希  徐海黎 《科教文汇》2014,(19):61-62

以卓越工程师培养计划的要求和目标为依据,针对目前机械类专业“测试技术”课程教学中的不足,结合自身教学改革实践,以系统观点优化教材体系,突出系统性、工程性和综合性;以启发式教学为主线,突出创新性教学模式;构建寓研于教的培养模式,促进教学与科研融合等方面进行了有效的探索,取得了一定的成效。  相似文献   

世居高原人群成年人体质测定标准的初步研制     

张艺宏  王纯  多布杰  邵平  李宁  孙君志 《成都体育学院学报》2014,(10)

制定世居高原人群成年人体质测定标准是合理评价高原人群体质的客观需求。运用数理统计法,按照我国国民体质测定标准的建立方法,对西藏地区20-59岁成年人体质测试数据进行统计计算,分别建立单项指标评分表和综合评级标准。研制的标准回代效果理想,综合评级的实际分布与理论分布相吻合。  相似文献   

论计算机辅助普通话测试的利与弊     

马彦芳  马美茹 《承德师专学报》2015,(3)

随着科学技术水平的不断改进发展,普通话水平测试也进入了一个崭新的发展阶段。为适应时代的需求,计算机辅助普通话水平测试已经成了广泛认可的做法。计算机辅助普通话水平测试的出现,为普通话测试掀开了崭新的一页,带来了前所未有的变革,其优势有目共睹,无可否认,但在实际操作中仍然存在一些问题。  相似文献   

Diagnosing misconceptions: Revealing changing decimal fraction knowledge     

《Learning and Instruction》2015

Conceptual change is a gradual process that occurs as students integrate new information into their existing conceptions. Throughout this process, assessing learning requires measures to diagnose misconceptions and understand how knowledge is changing. We developed three measures of misconceptions to assess students' knowledge early in instruction on decimals that measured the: 1) prevalence of misconception errors based on response patterns, 2) existence of misconceptions in a more abstract context, and 3) strength of misconceptions using confidence ratings. Students ages 9–11 (N = 297) completed the assessment at three time points. These measures revealed that whole number and role of zero misconceptions decreased and fraction misconceptions increased over time. The current measures also differentiated between weaker misconceptions that were changed after brief instruction and strongly held misconceptions. The current measures can create a more complete picture of knowledge than only measuring students' accuracy, providing a window into the conceptual change process.  相似文献   

基于专利计量的人工智能技术前沿识别及趋势分析     

张振刚  黄洁明  陈一华 《科技管理研究》2018,(5):36-42

以德温特专利数据库(DII)收录的人工智能领域相关专利为数据源,运用专利计量法对专利数据进行时间、地域分布和专利权人分析,展示了人工智能领域研究实力的分布情况;利用信息可视化软件Cite Space绘制人工智能的知识图谱,挖掘出人工智能领域的关键技术、技术热点与前沿领域,并对人工智能的发展趋势进行了分析。  相似文献   

Differential item functioning of the Acculturation,Habits, and Interests Multicultural Scale for Adolescents (AHIMSA) by race/ethnicity     

《Int J Intercult Relat》2023

BackgroundAcculturation is a complex multidimensional construct that plays an important role in various outcomes across many domains (e.g., psychological, behavioral, social, and developmental). While there are many acculturation measures for specific racial/ethnic groups, few multigroup measures exists. Even fewer have been psychometrically evaluated for differential item functioning (DIF; e.g., measurement invariance). This is a critical step in determining whether item properties are equivalent across groups and thus, whether scores obtained from different groups are in fact comparable.MethodsThe Acculturation, Habits, and Interests, Multicultural Scale for Adolescents (AHIMSA) was completed by first and second generation participants identifying as White, Hispanic, or Asian (n = 1399). The scale can be used to compute scores on four acculturation orientation subscales: Assimilated, Separated, Integrated, and Marginalized. Racial/ethnic DIF was evaluated for the Assimilation, Integration, and Separation subscales.ResultsAnalyses revealed racial/ethnic DIF was present for two items on the Separation scale based on McFadden’s pseudo R². No DIF was identified for the Assimilation and Integration scales. Supplemental analyses revealed no evidence of longitudinal DIF or by generation status and some DIF by sex for Assimilation and Integration. Based on evaluation of test characteristic curves and DIF plots, it was determined that DIF was trivial and could likely be ignored.ConclusionsPsychometric properties were generally equivalent across the three racial/ethnic groups for each of the subscales evaluated. This indicates that scores obtained from each subscale could be compared across racial/ethnic groups. By establishing cross-group usability of the scale, racial/ethnic differences in acculturation orientation can be examined, and, more importantly, used in the context of research on related mental, physical, and behavioral health outcomes.  相似文献   

基于CAN总线的智能仪表设计     

赵春平  张健涛  张会康  蒋媛 《科技广场》2010,(9)

本系统以AT89S52为控制核心,研制了具有温度和湿度测量功能的智能仪表,并对智能仪表的CAN总线接口技术进行了研究。在温湿度测量中,采用SHT11作为温湿度传感器,实现了0℃～120℃范围内的高精度温度测量,并分析了SJA1000内置CAN控制器的工作原理,设计了CAN总线接口电路。  相似文献   

体质测评与亚健康状态的研究及其干预   总被引：1，自引：0，他引：1  

梁锡华  张文高  王新满 《湖北体育科技》2008,27(1):24-27

目的：通过体质检测了解国民的体质状况,并进行评估,以区分健康与亚健康人群,近而有针对性的提出干预措施。方法：将体质检测结果作为健康状态的工作基础,结合国内外各种亚健康的评价方法,建立相应指标的评价体系。结果分析：亚健康的成因主要有社会心理因素;环境因素;饮食因素;生活方式。其干预措施包括运动处方;营养调控;中医养生等。结论：体质与亚健康有着密切的联系。运动健身是促进人体机能全面发展的最佳手段。亚健康状态的研究,可根据体质测评,结合医学、心理学、中医学、免疫学等多学科发挥优势,制定一套完善的预防措施。  相似文献   

长三角城市群创新联系的边界效应空间计量分析     

周正柱  许理 《科技管理研究》2023,(4)

本文以2010-2019年长三角城市群为研究对象，基于创新能力空间相关性、创新联系边界效应的理论机制，将传统β收敛模型和Barro公式的边界效应模型拓展成空间计量模型，展开长三角城市群创新联系边界效应空间计量分析。研究结果表明：（1）长三角城市群创新能力存在显著的正空间相关性，且创新能力趋于收敛，创新联系趋于紧密，创新一体化态势明显。（2）长三角城市群创新联系的省际边界效应表现为显著的中介效应，而创新联系的核心-边缘边界效应则表现为显著的屏蔽效应，且屏蔽效应呈现减弱态势。（3）经济发展水平、科技经费投入和交通基础设施水平对城市创新联系发挥着正向作用，且能够提高省际中介效应的显著性，削弱核心-边缘城市边界的屏蔽效应。  相似文献