Effects of load mass carried in a backpack upon respiratory muscle fatigue     

Mark Faghy  Sam Blacker  Peter I. Brown 《European Journal of Sport Science》2016,16(8):1032-1038

Purpose: The purpose of this study was to investigate whether loads carried in a backpack, with a load mass ranging from 0 to 20?kg, causes respiratory muscle fatigue. Methods: Eight males performed four randomised load carriage (LC) trials comprising 60?min walking at 6.5?km?h^?1 wearing a backpack of either 0 (LC₀), 10 (LC₁₀), 15 (LC₁₅) or 20?kg (LC₂₀). Inspiratory (P_Imax) and expiratory (P_Emax) mouth pressures were assessed prior to and immediately following each trial. Pulmonary gas exchange, heart rate (HR), blood lactate and glucose concentration and perceptual responses were recorded during the first and final 60?s of each trial. Results: Group mean P_Imax and P_Emax were unchanged following 60-min load carriage in all conditions (p?>?.05). There was an increase over time in pulmonary gas exchange, HR and perceptions of effort relative to baseline measures during each trial (p?p?>?.05). Conclusions: These findings indicate that sub-maximal walking with no load or carrying 10, 15 or 20?kg in a backpack for up to 60?min does not cause respiratory muscle fatigue despite causing an increase in physiological, metabolic and perceptual parameters.  相似文献   

The Florida Geographic Data Library: Lessons Learned and Workflows for Geospatial Data Management     

Crystal Goodison  Sam Palmer 《Journal of Map & Geography Libraries》2016,12(1):73-99

The University of Florida GeoPlan Center has been organizing, standardizing, and distributing geospatial data since 1998 through the Florida Geographic Data Library (FGDL), a collection of Florida geospatial data from various agencies, as well as data developed in-house. With funding from the Florida Department of Transportation (FDOT), FGDL serves as a public distribution mechanism for hundreds of Florida geospatial data layers. Since 2004, FGDL layers have formed the data foundation for FDOT's interagency application known as efficient transportation decision making (ETDM), which facilitates the review and permitting process for proposed transportation projects. Data layers are standardized and inspected to ensure that the data are adequate for use in analysis and decision making. To efficiently manage the geospatial data and workflows, a quality assurance/quality control (QAQC) process and relational database schema was developed to track the standardization procedures, lineage, versioning, and archiving of the data layers. This article details the history of the Florida Geographic Data Library, challenges of managing a large geospatial data repository, development of a QAQC process and database schema, and lessons learned.  相似文献   

Journalism training in Sri Lanka: meeting the needs of working journalists     

Sam Miller 《Changing English: An International Journal of English Teaching》2006,13(2):173-178

The ethnic conflict that has enveloped Sri Lanka since the 1980s has been deeply damaging to Sri Lankan journalism, whose traditions of impartiality and professionalism have been seriously undermined. The BBC World Service Trust has attempted to address these issues through a European‐funded training programme aimed at a broad range of media practitioners in Sri Lanka. This article seeks to assess how successful this programme has been and what lessons can be drawn by training organisations elsewhere who are seeking to implement similar projects.  相似文献   

Guest Editor's Column     

Sam Dragga 《Technical Communication Quarterly》2001,10(3):245-249

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Thinking with Spinoza about education     

Elizabeth de Freitas  Sam Sellar  Lars Bang Jensen 《Educational Philosophy and Theory》2018,50(9):805-808

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Tipping Trouble     

Sam Gordon 《海外英语》2011,(3):43-43

给小费？这在中国似乎不必。对于小费,各国有各国的讲究。在日本,如果给小费的话,会被认为是非常不礼貌的;而在美国,如果不给小费。服务员也许会追到街上问你要。  相似文献   

Paired Reading: a study of process and outcome     

Sam Winter 《教育心理学》1988,8(3):135-151

A peer tutored Paired Reading (PR) project was organised involving 10 and 11 year old pupils at two primary schools. Outcome was assessed by reading age. Tutor and tutee behaviour during PR was analysed by sessional tape recordings. The study indicates that many of the tutors involved in this project failed to follow PR procedures closely, that all tutors employed reinforcement at very low rates, that many important errors were left uncorrected, and that tutors were consistent in their adherence to (or neglect of) the procedures in which they had been trained.

There appeared to be no influence of tutees’ initial reading age on either tutee or tutor behaviour during PR sessions. No aspect of either tutee or tutor behaviour during PR was associated with size of reading gain.

Mechanisms underlying the apparent effectiveness of PR (and a number of other tutoring techniques for oral reading) are discussed in the context of the apparent absence of any relationship between tutor adherence to PR and tutee reading gains.  相似文献   

Mobile learning in higher education: A comparative analysis of developed and developing country contexts     

Rogers Kaliisa  Edward Palmer  Julia Miller 《British journal of educational technology : journal of the Council for Educational Technology》2019,50(2):546-561

The purpose of this paper is to compare and contrast characteristics of use and adoption of mobile learning in higher education in developed and developing countries. A comparative case study based on a survey questionnaire was conducted with 189 students (undergraduate and postgraduate) from Makerere University in Uganda and the University of Adelaide in Australia. The Unified Theory of Acceptance and Use of Technology (UTAUT) was employed as the theoretical framework. The results indicated that higher education students in developed and developing countries use a range of technologies for learning, with major differences between Uganda and Australia. The study concludes that mobile learning in higher education in developed and developing country contexts is still at an experimental stage with students using mobile devices in pedagogically limited ways.  相似文献   

From curriculum to implementation ‐ primary science and teacher development     

Marion Palmer 《Irish Educational Studies》2013,32(1):239-250

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A Rubber Yardstick and the Pursuit of Excellence     

Palmer DePue 《Clearing house (Menasha, Wis.)》2013,86(4):248-250

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