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11.
Mitch Parsell 《Ethics and Information Technology》2008,10(1):41-56
The importance of online social spaces is growing. New Web 2.0 resources allow the creation of social networks by any netizen
with minimal technical skills. These communities can be extremely narrowly focussed. In this paper, I identify two potential
costs of membership in narrowly focussed virtual communities. First, that narrowly focussed communities can polarise attitudes
and prejudices leading to increased social cleavage and division. Second, that they can lead sick individuals to revel in
their illness, deliberately indulging in their disease and denying the edicts of the medical profession. I specifically examine
illness communities centred on the now defunct Multiple Personality Disorder. I highlight these potential problems and point
to some technologies that may help combat them. 相似文献
12.
Andrew Miller Narelle Eather Mitch Duncan David Revalds Lubans 《Journal of sports sciences》2019,37(2):173-179
This study investigated if object control relates to children’s game play competence, and examined these competencies as correlates of physical activity and cardiorespiratory fitness. Game play (Game Performance Assessment Instrument), object control (The Test Gross Motor Development-3), moderate-to-vigorous physical activity (Accelerometry), and cardiorespiratory fitness (20-metre shuttle) assessments were completed for 107 children (57% Female, 43% Male) aged 9–12 years (M 10.53, SD 0.65). Two-level regression of object control on game play competence, and object control and game play competence on physical activity and cardiorespiratory fitness assessed associations. Object control competence was positively associated with game play competence (Std. B = 0.25, t (104.77) = 2.38, p = 0.001). Game play competence (Std. B = 0.33, t (99.81) = 5.21, p < 0.000) was more strongly associated with moderate-to-vigorous physical activity than object control competence (Std. B = 0.20, t (106.93) = 2.96, p = 0.003). Likewise, game competence (Std. B = 0.39, t (104.41) = 4.36, p < 0.000) was more strongly associated with cardiorespiratory fitness than object control competence (Std. B = 0.22, t (106.69) = 2.63, p = 0.002). Object control and game competence are both important as correlates of physical activity and cardiorespiratory fitness in children. 相似文献
13.
The aim of this study was to investigate the effect of pre-induced inspiratory muscle fatigue (IMF) on race-paced swimming and acid-base status. Twenty-one collegiate swimmers performed two discontinuous 400-m race-paced swims on separate days, with (IMF trial) and without (control trial) pre-induced IMF. Swimming characteristics, inspiratory and expiratory mouth pressures, and blood parameters were recorded. IMF and expiratory muscle fatigue (P < 0.05) were evident after both trials and swimming time was slower (P < 0.05) from 150-m following IMF inducement. Pre-induced IMF increased pH before the swim (P < 0.01) and reduced bicarbonate (P < 0.05) and the pressure of carbon dioxide (PCO2) (P < 0.05). pH (P < 0.05), bicarbonate (P < 0.01) and PCO2 (P < 0.05) were lower during swimming in the IMF trial. Blood lactate was similar before both trials (P > 0.05) but was higher (P < 0.01) in the IMF trial after swimming. Pre-induced IMF induced respiratory alkalosis, reduced bicarbonate buffering capacity and slowed swimming speed. Pre-induced and propulsion-induced IMF reflected metabolic acidosis arising from dual role breathing and propulsion muscle fatigue. 相似文献
14.
Darrell Morris Woodrow Trathen Richard G. Lomax Jan Perney Linda Kucan Elizabeth M. Frye Janet W. Bloodgood Devery Ward Robert Schlagal 《Reading and writing》2012,25(1):189-215
This study examined how well elementary students?? performance on a set of commonly-used reading assessments conformed to a model of automatic print processing. The assessments included measures of word recognition-untimed, word recognition-timed, oral reading accuracy, oral reading rate, silent reading rate, and spelling. The proposed print-processing model, based on the work of Perfetti (1992) and Share (1995), held that contextual reading accuracy is directly related to automatized word knowledge which is directly related to reading rate. Structural equation modeling showed that the performance data had an acceptable fit to the proposed model and to a second, post hoc model in which automatic word recognition is directly related to contextual reading accuracy. However, additional regression analyses tended to favor the initial model. Because the six print-processing components in this study proved to be reliable and related, and because two of the components (word recognition?Ctimed and spelling) are seldom used in conventional reading assessments, the results have important implications for practice. 相似文献
15.
This study described the activity patterns of students in a high school fitness class and explored the structural relationships between particular student characteristics and their systematically coded exercise behavior. Although percent of time spent jogging was low (18%), with no gains made in cardiovascular fitness, the amount of time spent jogging, the distance covered, and fitness level were all significantly correlated. A LISREL VI computer program was used to test a structural equation model representing the Fishbein Behavioral-Intention Model. In support of the model, results showed the prediction of exercise behavior by attitude and subjective norm was significantly mediated by intention. Although not significant, it is worth noting that subjective norm was found to be the stronger predictor of intention over attitude. Background variables were found to indirectly influence intention through their significant influence on attitude and subjective norm. For this sample of 9th and 10th graders, significant others, particularly their peers and teachers, had a stronger impact on behavior than personal attitudes about activity. 相似文献
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17.
V S Lomax 《Bulletin of the Medical Library Association》1971,59(4):559-573
Prompted by the apparent unavailability of published information regarding the cataloging practices in North Carolina schools of nursing libraries, this study was conducted using a questionnaire sent to the thirty-eight schools of nursing in the state.The "average" North Carolina school of nursing library is an autonomous facility administered by nonprofessional personnel or by a person with an undergraduate degree in a nonlibrary field. The materials are organized by the National Library of Medicine Classification and Medical Subject Headings in combination with the Library of Congress classification and subject headings, except for bound journals which are shelved alphabetically by exact title.It is recommended that separate school of nursing and hospital or medical school libraries be consolidated under a trained librarian in order to standardize and unify cataloging practices on the local level and to gain the advantages available through regional and national cooperation of health sciences libraries. 相似文献
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19.
E.L. Lomax 《Journal of The Franklin Institute》1917,184(4):597-598
20.
Paul E. Yeatts Mitch Barton Robin K. Henson Scott B. Martin 《Measurement in physical education and exercise science》2017,21(2):83-91
A common practice in general linear model (GLM) analyses is to interpret regression coefficients (e.g., standardized β weights) as indicators of variable importance. However, focusing solely on standardized beta weights may provide limited or erroneous information. For example, β weights become increasingly unreliable when predictor variables are correlated, which is often the case in the social sciences. To address this issue, structure coefficients, which are simply the bivariate correlation between a predictor and the synthetic ? variable, should also be interpreted. By examining β weights and structure coefficients in conjunction, the predictive worth of each independent variable can be more accurately judged. Despite this benefit, researchers in the field of sport and exercise science have rarely reported structure coefficients when conducting multiple regression analysis. Thus, the purpose of the present article is to discuss problems associated with the sole interpretation of β weights and to demonstrate how structure coefficients can be incorporated to improve accuracy of interpretation. Additionally, a content analysis was conducted to examine current trends in reporting multiple regression results within sport and exercise science research. 相似文献