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天然药物化学实验是天然药物化学课程中的一个重要部分,实验的目的在于通过实验对天然药物进行化学成分分离、结构鉴定和性状鉴别。实验教学是学生培养技能、提高科学素养和综合素质的重要途径,在天然药物化学教学过程中有着非常重要的作用。然而,目前天然药物化学实验教学仍存在诸多问题,如内容陈旧、不合理、考核方式单一等。本文分析了目前天然药物化学实验教学中存在的问题,提出了基于学生素质教育和创新能力培养的天然药物化学实验教学改革新思路,以期为提高天然药物化学实验教学质量提供一定参考。 相似文献
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以金陵科技学院眼视光专业教育与人才现状为基础,通过分析开放教育资源现状与学习困境,结合深度学习与研究性学习基本理论,构建了基于项目或问题引导(P&PBL)五步骤深度学习法,探索一种深度学习与开放教育资源下的眼视光学研究性学习实践方式和方法.本方法有利于学生增强学习体验,提高学习效率,提升整体性思维、批判性思维和发散性思维能力. 相似文献
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服务性学习是一种将学习者的主动实践和专业学习相结合的教学形式,强调学习与服务的结合,并从所获得的经验中进行反思。本文借鉴国内外服务性学习经验,将服务性学习理念与三本院校化工专业教学相结合,对提高学生学习的积极主动性方面具有重要借鉴意义。 相似文献
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在专题学习网站下开展主题学习,是信息化时代的一种重要教学模式。通过建立专题学习网站,开展"主题学习"在《有机化学实验》教学中的应用研究。选取两个班作为研究对象,分别为实验组和对照组。围绕主题开展学习讨论。网站提供学习平台。通过问卷调查和理论考试分数评价教学效果。调查显示学习网站有利于提高学生的学习兴趣,丰富学生学习知识。 相似文献
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This paper presents the rationale for incorporating engineering design into project-based laboratory learning. To ensure an effective and efficient pedagogy for the new laboratory format, we placed the emphasis of the pedagogical framework on constructivist learning for deep laboratory learning, and integrated experiential learning cycle with cyclic engineering design to formulate a sequential instruction and formative assessment methodology. The implementation of the pedagogy was exemplified using a case study of a concrete distillation design consisting of conceptualizing the design, reasoning the adequacy and experiment-based validation of the design correlations, and verifying the final design as per experimental observations. The impact of the novel lab format on student learning experience was surveyed and compared to that of a traditional laboratory. The survey results revealed that the project-based laboratory with design resulted in an improved learning experience in addressing high-level learning outcomes and engineering skills. Evidence of the survey also suggested that the sequential instruction and formative assessment methodology was effective with every stage of the experiential learning and formative assessment essential for the successful and efficient implementation of the project-based laboratory learning. 相似文献
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Implementation of student-centered learning has shown wide global acceptance within institutes of higher learning. Some methods, such as active learning, project-based learning, problem-based learning, and experiential-based learning, have significantly impacted the students’ understanding of a particular subject. However, students will still have problems integrating the materials learned from one course to other courses. Thus, this is where the proposed initiative comes in. This paper discusses the implementation of integrated project-based learning (IPBL) to assist students in integrating the knowledge gained from one course to the other for first-year chemical engineering students of Universiti Teknologi PETRONAS. The mapping of assessments and learning domains to the learning activities are also shown in detail. This study was conducted on two courses offered in the same semester, namely, Principles of Chemical Engineering and Chemical Engineering Fluid Mechanics, in January 2019. A total of 214 students grouped in 43 teams were asked to develop a Do-It-Yourself (DIY) hydraulic jack, which uses the fundamentals taught in these two courses. The results show that 100 % student was able to come up with a working prototype within 5 weeks and 90 % of the students agree that the initiative increased their understanding in chemical engineering fundamentals and developed their leadership, problem-solving, communications and time management skills. 相似文献
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针对值函数逼近算法对精度及计算时间等要求,提出了一种基于改进极限学习机的递归最小二乘时序差分强化学习算法。首先,将递推方法引入到最小二乘时序差分强化学习算法中消去最小二乘中的矩阵求逆过程,形成递推最小二乘时序差分强化学习算法,减少算法的复杂度及其计算量。其次,考虑到LSTD(0)算法收敛速度慢,加入资格迹增加样本利用率提高收敛速度的算法,形成LSTD(λ)算法,以保证在经历过相同数量的轨迹后能收敛于真实值。同时,考虑到大部分强化学习问题的值函数是单调的,而传统ELM方法通常运用具有双侧抑制特性的Sigmoid激活函数,增大了计算成本,提出采用具有单侧抑制特性的Softplus激活函数代替传统Sigmoid函数,以减少计算量提高运算速度,使得该算法在提高精度的同时提高了计算速度。通过与传统基于径向基函数的最小二乘强化学习算法和基于极限学习机的最小二乘TD算法在广义Hop-world问题的对比实验,比较结果证明了所提出算法在满足精度的条件下有效提高了计算速度,甚至某些条件下精度比其他两种算法更高。 相似文献