Predictive value of ventilatory inflection points determined under field conditions     

Christian Heyde  Hubert Mahler  Kai Roecker  Albert Gollhofer 《Journal of sports sciences》2016,34(9):787-793

The aim of this study was to evaluate the predictive potential provided by two ventilatory inflection points (VIP₁ and VIP₂) examined in field without using gas analysis systems and uncomfortable facemasks. A calibrated respiratory inductance plethysmograph (RIP) and a computerised routine were utilised, respectively, to derive ventilation and to detect VIP₁ and VIP₂ during a standardised field ramp test on a 400 m running track on 81 participants. In addition, average running speed of a competitive 1000 m run (S_1k) was observed as criterion. The predictive value of running speed at VIP₁ (S_VIP1) and the speed range between VIP₁ and VIP₂ in relation to VIP₂ (VIP_SPAN) was analysed via regression analysis. VIP_SPAN rather than running speed at VIP₂ (S_VIP2) was operationalised as a predictor to consider the covariance between S_VIP1 and S_VIP2. S_VIP1 and VIP_SPAN, respectively, provided 58.9% and 22.9% of explained variance in regard to S_1k. Considering covariance, the timing of two ventilatory inflection points provides predictive value in regard to a competitive 1000 m run. This is the first study to apply computerised detection of ventilatory inflection points in a field setting independent on measurements of the respiratory gas exchange and without using any facemasks.  相似文献   

试论清末女子学校教育   总被引：2，自引：0，他引：2  

常晓京  张慨 《信阳师范学院学报(哲学社会科学版)》2001,21(2):62-66

清末女子学校教育是近代妇女解放的发端，其显特征是：1、戊戌维新时期女子学校教育与新化事业并进，呈现出贵族化倾向；2、辛亥女子学校教育与前相比各种矛盾日益突出。  相似文献   

普通高校“GIS二次开发”课程实践教学探讨     

秦凯  杨杰 《南阳师范学院学报》2007,6(6):84-85

“G IS二次开发”是地理信息系统专业的核心课程之一,结合教学实际,介绍了普通高校“G IS二次开发”课程教学和实践的实现过程,从课程特点、教学过程组织、学生科研等方面探讨了实践教学的方法。  相似文献   

香果树种子贮藏寿命的研究     

陈黎  周凯 《黄山学院学报》2007,9(5):64-66

对黄山地区香果树种子贮藏及发芽能力等进行了研究,设置常温、5℃、-5℃三种温度进行贮藏,在不同时期、不同条件下,分别对其进行发芽试验,结果表明5℃是香果树种子贮藏的最佳温度.  相似文献   

University,Knowledge and Regional Development: Factors Affecting Knowledge Transfer in a Developing Region     

Neba Samuel Fongwa 《Africa Education Review》2016,13(3-4):191-210

The role of knowledge in the current knowledge economy cannot be overly emphasised. Successful regions are continuously being linked to excellence in the production, accumulation, and application of knowledge. Universities have increasingly been at the centre of such knowledge production, application and transfer. Yet, there is little research and evidence in this regard pertaining to less developed countries. The paper aims to fill this gap. The study uses the conceptual notion of knowledge transfer to interrogate the engagement level between the university and its region. Using a qualitative approach comprising the use of primary and secondary data, the authors capture some of the factors affecting knowledge transfer. Highlighting both supply-side and demand-side factors, the authors argue in favour of a nuanced and complex negotiation of the knowledge-development interface between universities as knowledge producers and regional stakeholders as knowledge users. Such negotiations should take cognisance of local realities.  相似文献   

Some correlates of the choice of educational streams in Israeli High Schools     

Avi Hofstein  Ruth Ben-Zvi  David Samuel  Richard F. Kempa 《科学教学研究杂志》1977,14(3):241-247

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浅谈导学群的服务体系和技术环节的作用     

李凯 《山西广播电视大学学报》2004,9(3):5-6

导学群新概念的提出是我省电大开放教育新模式的教学服务理念,它的运行机制是围绕学生自主学习服务体系而构建的技术环节在导学群服务体系中起着非常重要的作用。  相似文献   

论抗日战争时期山西地方实力派的政治策略     

王凯 《信阳师范学院学报(哲学社会科学版)》2007,27(3):121-125

抗日战争时期，以阎锡山为首的山西地方实力派，从维护自身在山西利益的前提出发，对日本帝国主义、共产党和蒋介石集团采取了不同的政治策略，充分体现了其政治策略的反复性和复杂性。这种策略有其深刻的原因，同时对抗战局势及其自身的发展影响颇为深远。  相似文献   

高等师范工笔花鸟画教学中的几个问题及对策     

章凯 《毕节学院学报》2006,24(3):52-55

目前师范类美术专业的很多学生进校时仅有一点素描和色彩的基础,对民族传统绘画知之甚少,而需要学习的各类文化、专业课程多,在工笔花鸟画课程方面的课时较少。在教学中,学生面对丰富的工笔画形式无法着手学习传统的基础技法、学习基础技法后不知如何结合现当代的美学思想及工笔画发展趋势,拓展思维,培养创作意识。因此指导学生选择临本、熟悉工具材料性能、选择典型题材进行教学、大胆进行新材料、新技法的尝试等,在有限的教学时间内就能提高学生的学习效果。  相似文献   

Local Language-related Research: Some Trends and Issues     

Ho Wah Kam 《Asia Pacific Journal of Education》1985,7(1):1-3

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