This paper analyzes the current situation of college teachers’teaching organization ability based on teaching implementation by using the literature method and inductive deduction method,and summarizes the factors af...This paper analyzes the current situation of college teachers’teaching organization ability based on teaching implementation by using the literature method and inductive deduction method,and summarizes the factors affecting the teaching ability of college public physical education teachers,in order to provide references for the improvement of the teaching effect of college physical education,and help the implementation of the national strategy of healthy China and sports power.The teaching implementation of physical education teachers in colleges and universities is mainly affected by the drafting of teaching objectives,teaching design,teaching evaluation,and other factors.The teaching workload makes teachers tired of teaching preparation,teaching design fails to think deeply about the major and learning situation,teaching evaluation method is single,and other phenomena.In view of the problems in the implementation of the curriculum,it is proposed to participate in education and teaching training to update the educational concept,regularly carry out teaching and research activities to improve the teaching organization ability,and write teaching logs to improve the ability of sustainable development.展开更多
The Tibetan Plateau is one of the most important ecological barriers in China. Resolving the internal relations and dynamics ruling the association between regional vegetation and climate change is important to unders...The Tibetan Plateau is one of the most important ecological barriers in China. Resolving the internal relations and dynamics ruling the association between regional vegetation and climate change is important to understand and protect the regional ecosystems. Based on vegetation, temperature and precipitation data of the Tibetan Plateau from 2001 to 2010, we analyze the spatial and temporal variations of vegetation cover over the past 10 years and discuss the vegetation response to climate change using empirical orthogonal function and singular value decomposition. Our results reveal the following:(1) vegetation cover gradually decreases from the southeast to the northwest of the Tibetan Plateau;(2) vegetation cover has increased on the Tibetan Plateau over the past 10 years, mainly in the central and eastern zones; and(3) a significant positive relationship was suggested between vegetation cover during growing season and the temperature in the entire region and with precipitation in the central and southern zones.展开更多
针对光离子化检测器(Photo Ionization Detector),通过原理研究,利用COMSOL进行了气流场和静电场的仿真,在仿真结果的指导下,进行了结构优化,使气室死体积大幅度缩减,并得出偏置电压与收集效率之间的关系。使光离子化检测器的带电离子...针对光离子化检测器(Photo Ionization Detector),通过原理研究,利用COMSOL进行了气流场和静电场的仿真,在仿真结果的指导下,进行了结构优化,使气室死体积大幅度缩减,并得出偏置电压与收集效率之间的关系。使光离子化检测器的带电离子收集效率大幅提升。开发了低干扰和快速响应的电离室。在确定最佳流量为50 m L,紫外灯电离能为10.86 e V的情况下,针对VOC气体(甲苯)进行实验,确定偏置电压为150 V时,离子收集效率可达到85%,且光离子化检测器线性度良好,相关系数为99.84%,最低检测限可达到ppb级。其检测结果符合仿真结果中偏置电压与响应值的关系。展开更多
基金Teaching reform project of Chongqing Three Gorges University(Project number:JGZC2111).
文摘This paper analyzes the current situation of college teachers’teaching organization ability based on teaching implementation by using the literature method and inductive deduction method,and summarizes the factors affecting the teaching ability of college public physical education teachers,in order to provide references for the improvement of the teaching effect of college physical education,and help the implementation of the national strategy of healthy China and sports power.The teaching implementation of physical education teachers in colleges and universities is mainly affected by the drafting of teaching objectives,teaching design,teaching evaluation,and other factors.The teaching workload makes teachers tired of teaching preparation,teaching design fails to think deeply about the major and learning situation,teaching evaluation method is single,and other phenomena.In view of the problems in the implementation of the curriculum,it is proposed to participate in education and teaching training to update the educational concept,regularly carry out teaching and research activities to improve the teaching organization ability,and write teaching logs to improve the ability of sustainable development.
文摘The Tibetan Plateau is one of the most important ecological barriers in China. Resolving the internal relations and dynamics ruling the association between regional vegetation and climate change is important to understand and protect the regional ecosystems. Based on vegetation, temperature and precipitation data of the Tibetan Plateau from 2001 to 2010, we analyze the spatial and temporal variations of vegetation cover over the past 10 years and discuss the vegetation response to climate change using empirical orthogonal function and singular value decomposition. Our results reveal the following:(1) vegetation cover gradually decreases from the southeast to the northwest of the Tibetan Plateau;(2) vegetation cover has increased on the Tibetan Plateau over the past 10 years, mainly in the central and eastern zones; and(3) a significant positive relationship was suggested between vegetation cover during growing season and the temperature in the entire region and with precipitation in the central and southern zones.
文摘针对光离子化检测器(Photo Ionization Detector),通过原理研究,利用COMSOL进行了气流场和静电场的仿真,在仿真结果的指导下,进行了结构优化,使气室死体积大幅度缩减,并得出偏置电压与收集效率之间的关系。使光离子化检测器的带电离子收集效率大幅提升。开发了低干扰和快速响应的电离室。在确定最佳流量为50 m L,紫外灯电离能为10.86 e V的情况下,针对VOC气体(甲苯)进行实验,确定偏置电压为150 V时,离子收集效率可达到85%,且光离子化检测器线性度良好,相关系数为99.84%,最低检测限可达到ppb级。其检测结果符合仿真结果中偏置电压与响应值的关系。
