困境与超越——我国体育休闲产业发展的理性思考

通过结合我国的国情和体育休闲的特点,探讨和分析了当前我国体育休闲业发展中所存在的若干热点问题.     

中国高校合并前后科研生产率动态变化的Malmquist指数分析

This paper describes the dynamic changes in research productivity of Chinese higher education institutions (HEIs) before and after merger with Malmquist index, and decomposes the total factor productivity change index into catching-up effect, scale effect and frontier-shift effect. The main finding is that technological improvement and innovation are important factors to improve scientific research productivity of Chinese HEIs. __________ Translated from Qinghua Daxue Jiaoyu Yanjiu 清华大学教育研究 (Tsinghua Journal of Education), 2007, 28 (1): 62–70     

科学教育视角下英语教学模式的思考

在英语教学中,网络教学模式就是把传统的教育教学模式与信息技术结合起来,探索提高教育教学质量的新途径的一种英语教学模式.这种模式很好地体现了科学教育的思想,下面探索几种适应科学教育思想的网络教学模式.     

工程项目过程管理的绩效考核KPI指标及方法

分析工程项目过程管理的绩效考核指标方及方法,探讨其结果应用和应注意的问题.工程项目过程管理绩效考核是建筑施工企业项目经理部管理中的重要环节,与建筑施工企业的生存有着密切的联系,它是建筑施工企业获取最大效益的源泉.作为建筑施工企业,首先抓好项目经理部过程管理绩效考核,只有这样,才能使工程项目管理获得更好地效益,为企业整体目标的实现奠定基础.     

关于高职院校“课程思政”建设研究的回顾与展望

通过可视化等多种方式系统梳理高职院校“课程思政”建设研究的基本情况,可以发现,学界对“课程思政”概念内涵、关键难点及路径的研究日益清晰。现阶段“课程思政”研究还存在实证研究少、特色化体系建设薄弱等问题。高职院校要强化“课程思政”实践研究,着重研究“课程思政”建设的相关保障和落实机制,关注高职院校与研究型高校在“课程思政”建设上的差异。     

学前教育公共服务供给的需求逻辑和现实选择

从我国大众对学前教育资源的需求侧出发研判学前教育公共服务的供给现实,对于厘清当前学前教育资源的需求层次、提升学前教育公共服务供给质量具有关键意义。学前教育公共服务的目标应把握保基本和求发展的需求逻辑,从基本需求、差额需求和超额需求三个层次出发构建学前教育公共服务供给的差序格局。在明晰学前教育公共服务供给现实问题的基础上,提供公共性和共享性的普及化基本公共服务、公益性和分享性的普惠化补充性公共服务、私益性和独享性的个性化非公共服务,保证学前教育公共服务供给的可实现性和可获得性。对学前教育公共服务供给机制的设计探索,需积极构建责任共担与收益共享的供给制度,保证经费供给的可行性和可持续性,从参与主体、服务供给、成本分担、人员管理、监督管理五个维度设计供给路径。     

模块化电工电子工程应用实验平台的设计和应用

为应对专业认证中复杂工程问题能力培养,研发了单元电路实验与系统实验于一体的电工电子工程应用实验平台,学生在完成基本单元电路实验的基础上,可进一步完成由其中大部分单元电路构成的电机调速系统实验。此实验平台在满足模拟电子技术基础单元实验要求的同时,也能开展综合性实验满足工程专业认证强调复杂工程问题能力培养的要求,从而满足了新工科建设对人才培养质量的更高要求。     

“互联网+翻转课堂”实验教学设计

电力系统分析实验课程是电气工程及其自动化专业的主干实践课程,其教学重点和难点在于系统模型的构建与分析。在新工科与“工业4.0”背景下,“互联网+”与翻转课堂相结合的“互联网+翻转课堂”教学模式符合信息化时代教育教学的新规律,适应经济社会快速发展对人才培养的新要求。“互联网+翻转课堂”电力系统分析实验课程体现了个性化、智能化、泛在化实验教学新模式,能够有效地提高学生的实践能力和培养创新精神,也是在课时压缩形势下保证教学质量的重要举措。     

How silicon fertilizer improves nitrogen and phosphorus nutrient availability in paddy soil?

In order to reveal the mechanism of silicon(Si) fertilizer in improving nitrogen(N) and phosphorus(P) nutrient availability in paddy soil, we designed a series of soil culture experiments by combining application of varying Si fertilizer concentrations with fixed N and P fertilizer concentrations. Following the recommendations of fertilizer manufacturers and local farmers, we applied Si in concentrations of 0, 5.2, 10.4, 15.6, and 20.8 μg/kg. At each concentration of added Si, the availability of soil N and P nutrients, soil microbial activity, numbers of ammonia-oxidizing bacteria and P-decomposing bacteria which means that the organic P is decomposed into inorganic nutrients which can be absorbed and utilized by plants, and urease and phosphatase activity first increased, and then decreased, as Si was added to the soil. These indicators reached their highest levels with a Si application rate of 15.6 μg/kg, showing values respectively 19.78%, 105.09%, 8.34%, 73.12%, 130.36%, 28.12%,and 20.15% higher than those of the controls. Appropriate Si application(10.4 to 15.6 μg/kg) could significantly increase the richness of the soil microbial community involved in cycling of N and P nutrients in the soil. When the Si application rate was15.6 μg/kg, parameters for characterizing microbial abundance such as sequence numbers, operational taxonomic unit(OTU)number, and correlation indices of microbial community richness such as Chao1 index, the adaptive coherence estimator(ACE)index, Shannon index, and Simpson index all reached maximum values, with amounts increased by 14.46%, 10.01%, 23.80%,30.54%, 0.18%, and 2.64%, respectively, compared with the control group. There is also a good correlation between N and P mineralization and addition of Si fertilizer. The correlation coefficients between the ratio of available P/total P(AP/TP) and the number of ammonia-oxidizing bacteria, AP/TP and acid phosphatase activity(AcPA), AP/TP and the Shannon index, the ratio of available N/total amount of N(AN/TN) and the number of ammoniated bacteria, and AN/TN and AcPA were 0.9290, 0.9508,0.9202, 0.9140, and 0.9366, respectively. In summary, these results revealed that enhancement of soil microbial community structure diversity and soil microbial activity by appropriate application of Si is the key ecological mechanism by which application of Si fertilizer improves N and P nutrient availability.