气膜厚度对反气泡稳定性的影响     

安骥  何随龙  王鑫  陈磊  李根  郑洪 《上海海事大学学报》2020,41(1):111-115

为观察气膜厚度对反气泡稳定性的影响,通过加热反气泡内外溶液来加热气膜内气体从而改变气膜厚度。实验发现:在一定温度范围内,加热反气泡气膜可以延长其稳定时间,但是当加热反气泡气膜使其厚度超过其稳定存在的阈值时,反气泡的稳定性会急剧下降甚至无法产生反气泡;在一定温度范围内温度对溶液表面张力影响很小,这使得文中实验数据合理化。本文为反气泡稳定性的理论研究提供实验支持,并考虑到气膜厚度为微米级,可为微米级气膜传热提供实验素材。  相似文献   

我国职业足球运动员转会管理方与俱乐部之间的委托代理问题     

辛松和 《哈尔滨体育学院学报》2020,(2):17-22

运用文献论证、博弈分析等研究方法,对我国职业足球运动员转会管理方与俱乐部委托代理双方的委托代理问题进行分析。研究认为,管理方与俱乐部委托代理之间委托代理问题产生的主要根源在于职业足球运动员转会监管和处罚机制不完善或者说运动员转会监管和处罚制度存在漏洞。针对管理方与俱乐部委托代理之间委托代理问题产生的原因,提出完善运动员转会监管机制、加强管理方与俱乐部委托代理双方信息交流、完善运动员转会处罚机制等解决委托代理问题的具体路径,旨在为相关部门制订职业足球运动员转会制度提供借鉴。  相似文献   

Exploring an intervention’s impact on everyday school activities     

Marianne Björn  Idor Svensson 《Support for Learning》2021,36(1):5-19

The focus of this paper is on a group of pupils with reading and writing difficulties who have been participating in an intervention study using assistive technology. That intervention study contained supervised training sessions with reading and writing tasks using an iPad with special supportive applications. The current study is a qualitative investigation of whether there has been any transfer from the intervention, to the pupils’ everyday school activities. Interviews with pupils and their teachers and observations during classroom lectures have been used to collect data. The results show that the pupils were positive to the assistive technology (the applications on the iPads), they found the apps easy to learn how to use and they appreciated the benefits they could give. Even so, only a few of the pupils had found use for and continued to use the tools after the intervention period finished. Possible reasons are that when the novelty wore off, students reverted to their usual study habits and that older students with many teachers and different classrooms were less able to adapt to using the apps. To improve transfer, it is suggested to introduce assistive technology earlier to students, in the younger grades, before study habits have been formed and to inform teachers about the use of AT in the classroom, including what is available and how it can benefit students.  相似文献   

传热学多层次、创新性实验教学模式的研究     

俞爱辉  冯妍卉  张欣欣  郭美荣  高婷 《中国现代教育装备》2011,(7):115-117

实验教学作为传热学这门课程的重要组成部分,对于加深学生对热量传递过程物理机制的认识,了解其工程应用情况,掌握基本的传热测试方法,提高学生的创新能力和对知识的综合应用能力,起着极其重要的作用。我们从对实验教学内容进行优化整合、实验课件的开发、网络实验教材的建设以及自主研发综合性实验台,到学生自发进行创新性实验,建立起了多层次的创新性实验教学体系。  相似文献   

关于绝热饱和温度的讨论     

欧阳华勇 《南通职业大学学报》2004,18(4):88-90

本文针对学生在《化工原理》学习中对绝热饱和温度概念的错误理解，通过对热质同时传递过程的分析、讨论，阐述了稳定状态和瞬时饱和状态的区别及绝热增湿过程的特点，并给出绝热饱和温度的合理定义。  相似文献   

Orthographic learning and transfer of complex words: insights from eye tracking during reading and learning tasks     

Emilie Ginestet  Jalyssa Shadbolt  Rebecca Tucker  Marie‐Line Bosse  S. Hlne Deacon 《Journal of Research in Reading》2021,44(1):51-69

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Factors predicting vertical transfer students’ GPA and degree attainment in an Asian educational context     

《Studies in Educational Evaluation》2021

Vertical transfer has been an increasingly prominent pathway to baccalaureate studies. However, few studies have investigated factors that predict academic performance and degree attainment of vertical transfer students in an Asian educational context. This study gathered data from the institutional dataset of 4133 records of vertical transfer students admitted between 2014 and 2017 in Hong Kong. Logistic regression analyses yielded that being female, first-semester GPA, number of courses per normal semester, and number of courses per summer semester were significant predictors of baccalaureate degree attainment. Linear regression analyses showed that gender (being female), pre-transfer GPA, post-transfer GPA difference, articulating within the same institution, proportion of credits for non- specialized courses, and number of courses per summer semester were associated positively with final GPA of those attaining a degree, while the presence of transfer shock and the number of credits required per year of study were negative predictors. Discussion and implications are presented.  相似文献   

Explaining the persistence of “decentralisation” of education in Egypt     

《International Journal of Educational Development》2021

This study examines how and why decentralisation remained central to education reform in Egypt over the period 1990–2016 despite the mixed outcome at both the national and international levels. Three decentralisation models were examined: community schools, public-private partnerships and school-based management. Network analysis was combined with a process-tracing approach to identify the key actors and mechanisms causing policy persistence. Analysis revealed international agencies used coercion through funding and persuasion by framing the models to match political sponsors’ interests. There was also bounded-rational learning by national actors from foreign experts and experiences and several complementary mechanisms with minor influence.  相似文献   

我国现代学徒制培训迁移的影响因素分析及其提升——基于培训迁移理论的探讨     

陈欣欣  陈文浩 《职教通讯》2021,(2)

培训迁移是评估培训是否成功最直接而有效的方式,现代学徒制培训应重视培训迁移。培训迁移理论认为,学习者个人特征、培训项目的设计与内容、工作环境特征是影响培训迁移水平的三个重要类别。基于学徒制的学习过程理论和培训迁移理论的研究发现,企业导师的指导质量、培训氛围与上级支持、培训内容的有效性、学习者自身特征被认为是影响现代学徒制培训迁移的重要因素。因此,校企双方应深化合作水平,致力于提高企业导师的指导质量、创造支持迁移的学习氛围、提高培训内容的有效性、激发学徒培训迁移的意愿,从而提高我国现代学徒制的培训迁移水平。  相似文献   

Why is Anatomy Difficult to Learn? The Implications for Undergraduate Medical Curricula     

Chun Chung Cheung  Susan M. Bridges  George L. Tipoe 《Anatomical sciences education》2021,14(6):752-763

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