浅论职业院校教育管理中人文精神的培养

随着社会的发展,职业院校除了加强其技术培训功能,也逐步开始重视对学生的综合人文素质培养,这就需要在职业院校在教育管理过程中加强人文精神主义教育。     

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.     

社区远程教育为空巢家庭服务的模式

社区远程教育是建设和谐文化的重要途径。空巢家庭目前在中国一直呈上升趋势,由于空巢家庭成员本身所具有的特点,使他们成为社区远程教育的重要对象。本文针对空巢家庭特点,从教学资源、教学内容、教学方式和考核方式等几个角度,提出社区远程教育对这一群体的教学服务模式。     

The effect of peer feedback for blogging on college students' reflective learning processes

Reflection is an important prerequisite to making meaning of new information, and to advance from surface to deep learning. Strategies such as journal writing and peer feedback have been found to promote reflection as well as deep thinking and learning. This study used an empirical design to investigate the interaction effects of peer feedback and blogging on college students' reflective thinking skills and their learning approaches. Forty-four first- and second-year undergraduate students participated in the study. Students kept blogs each week throughout a whole semester. Two journals were sampled at the beginning and end of the semester for each student. A repeated measure one-way ANOVA suggested that students' reflective thinking level increased significantly over time; however, peer feedback was found to negatively affect students' reflective thinking skills. The result of the study suggests more carefully designed uses in the future.     

孔、墨忠观念之比较

在儒家创始人孔子那里,"忠"主要是一种发自内心的真诚、尽己为人,是一种普遍伦理要求。当进而扩大至政治领域时,"忠"作为政治伦理规范,表示的是一种尽心事上的价值追求和工作态度。虽然也有"忠君"之义蕴,但主要是在道义的准则之下,表现出的一种相对的忠君观。在墨子那里,臣下对君主的忠是以君主对臣下的惠为前提的,但由于在判断君惠与否的标准上陷入了神秘主义的天志论,最终却是以尚同而导向了绝对的忠君观。     

北京民办高等教育在城市化进程中的辐射功能

民办高等教育的区域化研究一直是民办教育研究的重点课题。首都北京作为全国高等教育资源中心,民办高等教育获得了长足的发展,它在促进北京城市化进程中发挥着辐射功能,并与城市化形成一种互动关系。     

Novel high torque bearingless two-sided rotary ultrasonic motor

Applications are limited at present because the currently available ultrasonic motors (USMs) do not provide suffi-ciently high torque and power. The conventional travelling-wave USM needs the bearing to support, which required lubricant. To solve the above problem, a bearingless travelling-wave USM is designed. First, a novel structure of the two-sided USM consisting of a two-sided teeth stator and two disk-type rotors is designed. And the excitation principle of the two-sided travelling-wave USM is analyzed. Then, using ANSYS software, we set up the model of the stator to predict the excitation frequency and modal response of the stator. The shape of the vibration mode was obtained. Last, the load characteristics of the USM are measured using ex-perimental method. The maximum stall torque and the no-load speed were obtained. The results showed that the characteristics of the two-sided USM are better than those of the conventional one-sided USM.     

运动控制系统实验软件开发平台

为满足实验教学的要求,利用Matlab平台开发了一款可视化的运动控制系统实验教学软件。该系统内容丰富,覆盖范围广,包含:电机的特性仿真,电机起动、制动、调速,调节器的设计及电力电子变流。以GUI作为人机交互途径,方便实现参数的设置及修改,简化了仿真操作过程,提高了仿真效率,可以作为实验辅助工具或指导实际系统的设计。     

大学英语教师网络在线培训学习心得

在本文中,笔者通过参加高教司组织的"大学英语教师网络在线培训",结合自己对大学英语一线教学的经验和认识,得出了以下教学的新想法,即:要真正做到"人机交互、课上课下交互";要极大的重视学生听说能力的练习和提高;要强调"常态化的"英语环境。     

试析元话语的语篇功能与人际功能——以学术论文摘要为个案的研究

本文采用Hyland和Tse对元话语的分类方法,对学术论文摘要中元话语的语篇功能和人际功能进行了探讨。通过列举该类摘要中出现的多种引导式元话语与互动式元话语的使用,本文着重分析了元话语在构建语篇,表达命题内容,以及建立作者与读者人际对话关系中发挥的重要作用。