The respiratory time and flow profile at volitional exercise termination     

Jamie Kift 《Journal of sports sciences》2013,31(14):1599-1606

Abstract

In this study, we examine the effect of exercise on the time and flow characteristics of the respiratory cycle profile at the point of volitional exercise termination. Eight males (mean age 29 years, s = 10; body mass 74 kg, s = 7; height 1.75 m, s = 0.04) undertook a cycle test to volitional exhaustion on a cycle ergometer, which allowed peak oxygen uptake ([Vdot]O_2peak) to be measured (mean 51 ml · kg^?1 · min^?1, s = 7). At a later date, two sub-maximal tests to volitional exhaustion were completed in a random order at 76% (s = 6) and 86%[Vdot]O_2peak (s = 7). As expected, the magnitude of the respiratory flow and time characteristics varied with the three exercise intensities, as did the point of exercise termination and terminal ventilation rates, which varied from 7 to 27 min and 112 to 132 litres · min^?1 respectively. More importantly, however, at exercise termination some of the characteristics were similar, particularly the breathing frequency (at termination 49 breaths · min^?1), the ratio between inspiration and total breath time (0.5), and the later occurrence of peak inspiratory flow (0.24 – 0.48 s). The coincident unity of these time and flow profile characteristics at exercise termination illustrates how the integration of timing and flow during breathing influence exercise capacity in non-elite athletes.  相似文献   

Going beyond the book: towards critical reading in statistics teaching     

Andrew Gelman 《Teaching Statistics》2012,34(3):82-86

We consider three examples from our own teaching in which much was learned by critically examining examples from books. Even influential and well‐regarded books can have examples where more can be learned with a small amount of additional effort.  相似文献   

关于高校班级规模的调查分析     

杨静  姚利民 《高等教育研究》2012,(7):86-93

对某省七所高校班级规模的统计分析发现:该省高校班级规模很大,平均为65.91人;不同类型高校之间的班级规模由大到小依次排列是:新建高校、一般高校、重点高校、专科学校;不同高校之间的班级规模和不同课程之间的班级规模大多存在非常显著的差异。为此,针对当前因高校班级规模过大而影响课堂教学效果和教学质量的状况,教育行政管理部门要加强对高校班级规模的干预,高校也要努力适当缩小班级规模,更为重要的是,教育行政管理部门、高校特别是高校教师要在班级规模短期内难以控制的情况下,研究和探讨保障和提高课堂教学质量的对策。  相似文献   

科技期刊智慧出版模式的构建路径及实施对策     

李静  亢小玉 《编辑学报》2022,(5):505-509

智慧出版是将人工智能技术与出版产业相互融合,通过重构出版流程和优化知识服务能力,加速推动知识成果的传播及应用。文章从智慧出版流程重构和智能化知识服务升级2方面分析了科技期刊智慧出版模式的具体构建方法,并分别从技术、数据、人员、内容、风险5个方面提出了智慧出版实施的难点及对策,以期为科技期刊从现有出版模式向智慧出版模式转变提供思路。  相似文献   

The Four Ps of Publishing: Demystifying Publishing in Peer-Reviewed Journals for Social Work Doctoral Students     

Kimberly Bender  Liliane Cambraia Windsor 《Journal of Teaching in Social Work》2013,33(2):147-158

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2000年以来我国高等教育学学科研究的特点——基于对中国期刊全文数据库高等教育学学科研究论文的分析     

崔艳丽 《辽宁教育研究》2013,(5):6-9

2000年以来我国高等教育学学科研究的研究主题、研究机构与出版平台以及研究人员有着较为鲜明的特征：研究主题上理论体系、学科建设和学科属性受持久关注;厦门大学、华中科技大学和南京师范大学是推动学科研究的主要力量,以《江苏高教》、《高等教育研究》为代表的几个教育类期刊是学科研究成果的主要出版平台;从事学科研究的作者群体中以高职称人员和博士生为主,学科规训制度在推进学科研究中发挥了重要作用。在基本理论研究上力争突破、重视有组织研究机制创新并发挥主要出版平台的作用将是推进我国高等教育学学科研究未来发展的方向和举措。  相似文献   

‘Fratricidal warfare’: English-Canadian textbook publishers take on the Americans, 1970–1980     

Penney Clark  Wayne Knights 《History of education》2013,42(5):598-621

Educational publishing sits at the intersection of industry, culture and education. Pedagogical aims must be balanced with the need for publishers to make a profit, while also acknowledging Canadian national identity and culture. The events of central interest are related to the tensions between two publishers’ associations in the wake of the sales, in 1970, of Canadian publishers Gage and Ryerson Press to American interests. The Canadian Book Publishers’ Council was comprised mainly of American branch plants and the Independent Publishers Association membership was Canadian-owned publishing companies. The two associations became bitter rivals, engaging in ‘fratricidal warfare’, as they lobbied the provincial and federal governments and fought to maintain their places in the textbook market. About 65% of total sales revenues from publishing in Canada came from textbook sales in this period. Both governments and commercial interests had to balance Canadian sovereignty with commercial gain and educational goals.  相似文献   

Testing a model linking environmental hope and self-control with students' positive emotions and environmental behavior     

Dorit Kerret  Tammie Ronen 《The Journal of environmental education》2013,44(4):307-317

ABSTRACT

This study examined a moderated mediation model with 254 Israeli junior high school students, hypothesizing that students' environmental hope would simultaneously mediate the relationship between their engagement in school-based environmental activities (green engagement) and their environmental behavior as well as their positivity ratio, but that students' self-control skills would moderate these mediation processes. The results showed that engagement was linked to self-reported pro-environmental behavior, as well as experiencing more positive than negative emotions. Multigroup structural equation modeling indicated that the model provided a good fit to the data, and rigorous bootstrap analysis confirmed the simultaneous mediating role of environmental hope—but only for students with high self-control skills. The limitations and implications of the findings are discussed, and future directions are presented.  相似文献   

《全球化语境下的学术写作：英语出版的政治与惯例》评介     

梁凤娟 《外语教学理论与实践》2012,2(1):91

本文评介了Theresa Lillis 与 Mary Jane Curry于2010年合作出版的新作《全球化语境下的学术写作：英语出版的政治与惯例》。文章首先对该书的结构和内容进行简要介绍,然后从三个方面对其进行评述：在理论及实践上的重要指导意义;研究工具的多样性及研究方法的创新性;以及贯穿全书的深刻批判性。该书对学术论文写作及发表的政治与惯例所进行的分析具有开拓性,对应用语言学、写作教学与研究及英语作为第二语言和外语教学具有重要价值。  相似文献   

学术图书馆参与数字出版的动因与条件分析     

刘兹恒  涂志芳 《图书情报工作》2016,60(3):32

[目的/意义]了解学术图书馆对新的出版环境的感知和应对情况以及学术图书馆出版服务现状,分析学术图书馆参与数字出版的潜在动力和优势条件,从理论与实践两方面论证学术图书馆参与数字出版服务的重要性、必要性和可行性。[方法/过程]首先介绍学术图书馆在促进学术交流中所承担的角色与使命,分析学术出版的功能作用;讨论学术图书馆参与数字出版的潜在效益。继之,主要选取分别代表开放存取期刊、仓储和图书的DOAJ、OPenDOAR、DOAB作为开放存取出版现状的调研对象,选择ARL和SPARC研究图书馆出版服务相关报告并调研图书馆出版联盟,以了解国内外学术图书馆的出版服务现状。在此基础上,进一步分析总结学术图书馆参与数字出版所具备的内容资源、技术平台、用户、人才等方面的优势条件,并简要讨论学术图书馆参与数字出版的角色和功能定位。[结果/结论]总结学术图书馆参与数字出版的动因和条件以及可能面临的不确定性,并相应提出可能的应对策略。  相似文献