Development and evaluation of the organic chemistry-specific achievement emotions questionnaire (AEQ-OCHEM)

Affect is associated with success and persistence in STEM courses and degree programs. Measurement tools that produce valid and reliable data are essential to capturing the impact of evidenced-based instructional practices and reformed curricula on learning. We report the development of the Achievement Emotions Questionnaire for use in postsecondary organic chemistry courses (AEQ-OCHEM). Instrument development was based on the control-value theory of achievement emotions and included a revision of the seminal Achievement Emotions Questionnaire (AEQ) used to measure institutional-level learning. A thorough psychometric evaluation of the AEQ-OCHEM was conducted including alternative measurement models and an extensive investigation of the nomological framework. All AEQ-OCHEM subscales were determined to be coherent and distinct. Implications for future research using the AEQ-OCHEM are offered. A call for the development of more discipline- and course-based instruments is made. Finally, tools that measure achievement emotions in the context of instructional laboratories and undergraduate research are needed for more robust considerations of affect in STEM contexts.     

改革有机化学实验教学 培养学生综合能力

文章从教学内容、教学方法、教学评价等方面对有机化学实验教学进行改革探索,以进一步提高课堂教学质量,培养学生的综合能力。     

企业成长机制理论研究综述

企业成长机制理论主要探讨企业通过什么方式实现成长,目前主要存在着内部成长、并购成长和网络化成长三种基本的企业成长方式和机制,它们分别对应于企业资源基础理论、环境学派、资源依赖学派和集群理论的战略思想。     

High-brightness organic light-emitting diodes

The research of high-brightness organic light-emitting diodes,as an important branch of organic light-emitting diodes (OLEDs),makes it possible for achieving high-brightness lighting source and lasing.Heat dissipation and efficiency roll off,as two main factors,affect the brightness of the OLEDs heavily.In this paper,high-brightness OLEDs are obtained by utilizing pulse voltage,small areas and micro-cavity structure to minimize the effect of the two factors.The major advances,ongoing challenges and future p...     

高职有机化学课程网络资源与课堂教学改革研究

在高职有机化学课程的课堂教学设计中,教师应充分利用丰富的网络资源,构建课程网络资源池,提高资源的应用性,通过课堂教学设计保证教学运行的有效性,实现以互联网为载体、课堂为平台、学生为服务对象的新的《有机化学》教学模式,保证高职院校人才培养的质量。     

有机化学教学中的“低碳理念”

有机化学与"低碳理念"密切相关。本文从教材内容、课堂教学现状和与国内外教材对比等角度简要分析了当前有机化学教学中"低碳理念"的渗透贯彻状况,对在教学中更好地贯彻这一理念提出了一些建议。     

有机化学教学中大学生科学素质培养现状调查及分析

对华南农业大学大学生的科学素质培养现状,并结合基础有机化学教学的情况进行了调查。通过对调查结果进行分析和讨论,对大学生的科学素质培养和基础有机化学教学中存在的问题进行总结,并提出建议,以便更好地培养大学生的科学素质、提高基础有机化学教学的质量和水平。     

提高难降解有机废水可生化性的预处理技术

从物理化学法、化学法和生物法三个方面介绍了提高难降解有机废水可生化性的预处理技术的原理,综述了不同预处理技术的应用现状和优缺点,提出了今后的研究方向.     

臭氧电晕协同处理有机实验室废水的研究

用高压电晕和臭氧联用的方法来处理有机实验室产生的高浓度废水。在最佳实验条件的基础上对高浓度苯胺废水进行处理。当降解时间为60 min时,质量浓度为500 mg/L的苯胺废水CODcr和TOC的去除率分别可达70.1%和63.2%,且处理后废水的可生化性也得到了较大的提高。因此,电晕和臭氧联用也可作为一般废水处理的前处理工艺。     

二级键加和法估算含氮、硫、卤素有机物标准生成焓

本文给出了利用二级键加和法估算含氮、硫、卤素等元素的有机物标准生成焓的有关参数及公式,同时对238种此类物质的标准生成焓进行了估算,所得结果的平均误差为±2.41KJ.mol~(-1),优于其它方法。