Metadata and Memory: Lessons from the Canon of Memoria for the Design of Content Management Systems     

Stewart Whittemore PhD 《Technical Communication Quarterly》2013,22(1):88-109

To date, most of the research on usability and content management systems has focused on the end-user products of such systems rather than on the usability for technical communicators of the single-source authoring tools offered within these systems. While this latter research is undeniably important, attention needs to be paid to the plight of technical communicators attempting to use single-sourcing tools. Otherwise, technical communicators in workplaces risk becoming semi-skilled contingent labor rather than empowered knowledge workers. This essay, therefore, attempts to open a debate about the design of content management systems by turning to the rhetorical canon of memory as an appropriate source for insights into how stored information can be flexibly retrieved and used during composing activities.  相似文献   

Keeping Users at the Center: Developing a Multimedia Interface for Informed Consent     

Loel Kim  Amanda J. Young  Robert A. Neimeyer PhD  Justin N. Baker MD  Raymond C. Barfield 《Technical Communication Quarterly》2013,22(3):335-357

Viewing “informing” as a process to protect patients and support autonomy, we undertook a user-centered design process to develop online support for informed consent in pediatric Phase I research trials. Challenges included (a) delivering accurate information to people unfamiliar with medical terminology; (b) delivering this information humanely under time constraints and heightened emotions; (c) allowing users control over the information, while ensuring availability of legally required information. We addressed these challenges through analyses of audience, task, and information design.  相似文献   

Sport competition as a dynamical self-organizing system     

Tim McGarry  David I. Anderson  Stephen A. Wallace  Mike D. Hughes  Ian M. Franks 《Journal of sports sciences》2013,31(10):771-781

The existence of structure in sport competition is implicated in the widespread practice of using the information gathered from a past contest to prepare for a future contest. Based on this reasoning, we previously analysed squash match-play for evidence of signature traits from among the stochastic relations between the various types of shot. The mixed findings from these analyses led us to re-analyse squash match-play as a dynamical system. Here, we extend this line of investigation with some suggestions as to how various sports might be described further within this theoretical framework. We offer some examples of dynamical interactions in dyadic (i.e. one vs one) and team (e.g. many vs many) sports, as well as some predictions from a dynamical systems analysis for these types of sports contests. This paper should serve to initiate further research into the complex interactions that occur in sport competition.  相似文献   

Physiological and metabolic responses of wheelchair athletes in different racing classes to prolonged exercise     

Ian G Campbell  Clyde Williams  Henryk KA Lakomy 《Journal of sports sciences》2013,31(5):449-456

The aims of this study were to examine and compare selected physiological and metabolic responses of wheelchair athletes in two paraplegic racing classes [T3: n?=?8 (lesion levels T1–T7; paraplegics); T4: n?=?9 (lesion levels below T7; paraplegics)] to prolonged exercise. In addition, we describe the responses of three tetraplegic athletes [T2: n?=?3 (lesion levels C6/C7: tetraplegics)]. Twenty athletes completed 90?min of exercise at 75% [Vdot]O_2peak on a motorized treadmill adapted for wheelchairs. The mean (±s) heart rates of the T3 and T4 racing classes were 165±2 and 172±6 beats?·?min^?1, respectively. For the T4 racing class, heart rate gradually increased during the test (P?<0.05), whereas for the T3 racing class, heart rate reached a plateau after an initial increase. The mean heart rate of the tetraplegics was 114±3 beats?·?min^?1. The T3 and T4 classes exhibited similar respiratory exchange ratios, plasma lactate and glucose concentrations throughout the test. For both the T3 and T4 racing class, free fatty acid, glycerol, ammonia, urea and potassium concentrations had increased from resting values by the end of the test (P?<0.05). In conclusion, the results of this study suggest that endurance-trained wheelchair athletes are able to maintain velocities equivalent to the same relative exercise intensity (75% [Vdot]O_2peak) for prolonged periods irrespective of lesion level.  相似文献   

Relationship between a 14-Day Recall Measure of Leisure-Time Physical Activity and a Submaximal Test of Physical Work Capacity in a Population Sample of Australian Adults     

Michael L. Booth PhD  Neville Owen  Adrian Bauman  Christopher J. Gore 《Research quarterly for exercise and sport》2013,84(2):221-227

Abstract

This paper reports on the validity of a 14-day recall measure of leisure time physical activity (LTPA) in a sample of Australian adults (N = 986). Submaximal cycle ergometry was used to assess physical work capacity per kilogram of body mass (pwc75/kg). The self-report energy expenditure estimates were used to categorize respondents as vigorously active, moderately active, and low active/sedentary. Multiple regression analyses showed that pwc75/kg increased significantly across energy expenditure categories for adults aged less than 40 years; that the vigorous and moderate activity categories had greater mean pwc75/kg values than the low/sedentary category for 40 to 59-year-olds; and, that there were no differences in pwc75/kg between activity categories for those aged 60 years or older.  相似文献   

The Relationship of Self-Efficacy and Perceived Well-Being to Physical Activity and Stair Climbing in Older Adults     

Diane L. Gill PhD  Betty C. Kelley  Kathleen Williams  Jeffrey J. Martin 《Research quarterly for exercise and sport》2013,84(4):367-371

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A Human Science for the Study of Movement: An Integration of Multiple Ways of Knowing     

Larry L. Fahlberg PhD  Lauri A. Fahlberg 《Research quarterly for exercise and sport》2013,84(2):100-109

Abstract

Although the physical science approach to the study of movement was originally adopted as sufficient for the study of humans, the limitations of this approach are increasingly being recognized. This recognition of limitations has led to the widespread use of an often confusing variety of research methodologies. The variety of research methods can be readily understood when differentiated in two ways: first, according to the level of reality to which they refer and, second, according to the specific interest in the inquiry—whether the interest is technical manipulation, the understanding of meaning, or emancipation. The necessity for this realities-based framework is grounded in the recognition that the human world of movement, in addition to relating to the material realm, also includes meaning. This framework then provides an integration of ways of knowing and methodologies for one of the most profound scientific potentials necessary for a human science—understanding meaning.  相似文献   

The effects of caffeine ingestion on performance time,speed and power during a laboratory-based 1 km cycling time-trial     

Jonathan D. Wiles  Damian Coleman  Michael Tegerdine  Ian L. Swaine 《Journal of sports sciences》2013,31(11):1165-1171

Abstract

There is little published data in relation to the effects of caffeine upon cycling performance, speed and power in trained cyclists, especially during cycling of ～60 s duration. To address this, eight trained cyclists performed a 1 km time-trial on an electronically braked cycle ergometer under three conditions: after ingestion of 5 mg · kg^?1 caffeine, after ingestion of a placebo, or a control condition. The three time-trials were performed in a randomized order and performance time, mean speed, mean power and peak power were determined. Caffeine ingestion resulted in improved performance time (caffeine vs. placebo vs. control: 71.1 ± 2.0 vs. 73.4 ± 2.3 vs. 73.3 ± 2.7 s; P = 0.02; mean ± s). This change represented a 3.1% (95% confidence interval: 0.7–5.6) improvement compared with the placebo condition. Mean speed was also higher in the caffeine than placebo and control conditions (caffeine vs. placebo vs. control: 50.7 ± 1.4 vs. 49.1 ± 1.5 vs. 49.2 ± 1.7 km · h^?1; P = 0.0005). Mean power increased after caffeine ingestion (caffeine vs. placebo vs. control: 523 ± 43 vs. 505 ± 46 vs. 504 ± 38 W; P = 0.007). Peak power also increased from 864 ± 107 W (placebo) and 830 ± 87 W (control) to 940 ± 83 W after caffeine ingestion (P = 0.027). These results provide support for previous research that found improved performance after caffeine ingestion during short-duration high-intensity exercise. The magnitude of the improvements observed in our study could be due to our use of sport-specific ergometry, a tablet form and trained participants.  相似文献   

The moral disengagement in sport scale–short     

Ian D. Boardley  Maria Kavussanu 《Journal of sports sciences》2013,31(14):1507-1517

Abstract

A scale has recently been developed to measure moral disengagement in sport (Boardley & Kavussanu, 2007 Boardley, I. D. and Kavussanu, M. 2007. Development and validation of the Moral Disengagement in Sport Scale. Journal of Sport & Exercise Psychology, 29: 608–628. [PubMed], [Web of Science ®] , [Google Scholar]). It consists of 32 items that measure the eight mechanisms of moral disengagement proposed by Bandura (1991 Bandura, A. 1991. “Social cognitive theory of moral thought and action”. In Handbook of moral behaviour and development: Theory, research, and applications, Edited by: Kurtines, W. M. and Gewirtz, J. L. Vol. 1, 71–129. Hillsdale, NJ: Lawrence Erlbaum Associates.  [Google Scholar]). In the present study, we aimed to: (a) examine whether a subset of these items could form a short version of the scale; (b) provide evidence for the construct validity of the short version; and (c) test its measurement invariance across sex and sport type. A total of 992 football, rugby, hockey, basketball, and netball players from three different samples completed the long version of the scale. Data analyses indicated that the short version of the scale consisted of eight items and had high internal consistency. Construct validity of the scale was evidenced via correlations with sport moral disengagement and prosocial and antisocial behaviour. Multisample confirmatory factor analyses established measurement invariance across sex and partial measurement invariance across four team sports. In conclusion, the short version of the scale is a reliable and valid measure of moral disengagement in sport.  相似文献   

The role of representative design in talent development: a comment on “Talent identification and promotion programmes of Olympic athletes”     

Ross A. Pinder  Ian Renshaw  Keith Davids 《Journal of sports sciences》2013,31(8):803-806

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