高职模拟电子技术课直流稳压电源一章的调整

传统高职模拟电子技术课以大量的篇幅讲解性能差，当前应用很少的串联型稳压电源，而多项性能指标优越应用广泛的开关电源讲解甚少。本文通过对两种电源性能指标的比较，结合作者近年来的教学经验对原教学内容做了适当增补，并给出具体增补内容。     

日本的果树有机栽培技术

从土壤管理、EM技术及病虫害防治技术方面对日本果树的有机栽培技术作了介绍。     

焦点判罚与篮球运动员、规则和裁判员之间的相互关系

焦点判罚不是单纯的裁判问题，它与篮球理念、规则、运动员技术规范化程度和运动员运用临界技术的能力等因素有着本质的联系。研究焦点判罚与运动员、规则与裁判员之间的相互关系，不仅与提高裁判员的业务水平和运动员技、战术水平密切相关，而且对提高篮球运动水平和促进篮球运动的发展与进步也具有一定的指导作用。     

Science classroom activities and student situational engagement

This study examines the association between student situational engagement and classroom activities in secondary school science classrooms in Finland and the U.S. Situational engagement is conceptualised as times when students feel that a task is interesting and challenging to them and that they have the skills to complete it (see Schneider et al., 2016. Investigating optimal learning moments in U.S. and Finnish science classes. Journal of Research in Science Teaching, 53(3), 400–421. doi:10.1002/tea.21306). Data on situational engagement and classroom activities were obtained using the experience sampling method (ESM) from 247 Finnish students in 13 secondary science classrooms and 281 U.S. students in 18 secondary science classrooms. In both samples, the students tended to be situationally engaged only a small proportion of the time during their science classes. However, the Finnish students were more likely than the U.S. students to report being situationally engaged. To investigate when the students were most likely to report being situationally engaged, hierarchical logistic regression models were employed, which suggested that some classroom activities were associated with higher levels of student situational engagement than others. The Finnish students were more likely to report being situationally engaged when calculating and presenting scientific information. In the U.S., the students were more likely to report being situationally engaged while discussing scientific information and less likely when listening to the teacher. The results suggest that situational engagement is momentary and associated with specific science classroom activities.     

果树套袋技术

果树套袋对果实的外观品质、果园的生态效益、经济效益都有明显促进,但其效果也因不同的套袋材料、套袋时期等而不同,因此要做好套袋前的准备工作,摘袋、除袋、肥水管理及病虫害防治等工作。找出套袋中存在的问题及解决方法。     

网页制作的技能与技巧

就使用FrontPage制作网页与使用HTML语言编写网页各自的优缺点进行了比较，从中，得出两者只有有机的结合在一起才能制作出引人入胜的网页．我们根据网页的制作实践经验，在本文中浅谈网页制作的基本技能和几点技巧。     

一类比式问题的求解算法

对一类的线性比式和问题（P）提出了一确定性全局优化算法。利用等价问题和新的线性化技术给出了问题（P）的松弛线性规划（RLP），通过对RLP可行域的细分以及一系列RLP的求解过程，提出了分枝定界算法收敛到问题（P）的全局最优解，最终数值实验表明了提出方法的可行性。     

关于提高高校学生足球技术的思考

足球技术，就是指运动员在足球比赛中所采用的合理行动和动作方法的总称。本通过对高校足球比赛中，学生暴露出的技术问题，抓住影响比赛的关键技术环节，提出在高校教学和训练中，提高高校学生足球技术的方法和思路。     

食用菌液体菌种培养技术研究

本研究在相同培养生长条件下，对固、液体菌种的培养；液体菌种的连续培养技术，进行了初步对比实验研究。研究表明：食用菌菌种培养生产过程中，采用类似生物液体深层发酵技术培养菌种，可以大大缩短生产周期，适于工厂化大规模生产。     

旅游地域单元的系统性分析

随着现代旅游的发展,旅游活动与自然科学和社会科学的有机融合使业已形成的旅游业积累了大量经验,形成了庞大的旅游业技术体系.旅游业相关技术作为旅游地域系统正常运作的一个必要条件,除了为系统运行活动提供不可或缺的科学手段外,还利用其团聚作用达到优化整个旅游地城系统结构.目前,区域旅游业的发展应当充分认识区城系统内各类旅游要素的组合特点,并在此基础上寻求最科学的组合方式和管理途径,以促进区域旅游业的发展.