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991.
W. Koelle 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1961,7(1):105-106
Ohne Zusammenfassung 相似文献
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D E Hicks 《American annals of the deaf》1978,123(3):365-71, 419
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G W Gayle R L Pohlman R M Glaser G M Davis 《Research quarterly for exercise and sport》1990,61(3):224-232
The purpose of the present study was to determine the effects of 10-in [0.25-m] versus 16-in [0.41-m] wheelchair handrims on cardiorespiratory and psychophysiological exercise responses during wheelchair propulsion at selected velocities. Fifteen male paraplegics (27.0 +/- 5.5 yrs) performed three discontinuous exercise tests (ACE = arm crank ergometer; WERG = wheelchair roller ergometer) and two 1600-m performance-based track trials (TRACK) under simulated race conditions. There were no significant differences in HR, VO2, VE, HLa, or category-ratio ratings of perceived exertion (RPE) using different handrims during wheelchair propulsion at 4 km.h-1. In contrast, at 8 km.h-1 subjects demonstrated a 13% lower steady state VO2 (p less than .05) using the 10-in handrims, coincident with a 23% lower VE. Steady state HR during WERG at 8 km.h-1 using the 10-in (124.4 +/- 3.9 b.min-1) or 16-in (130.6 +/- 4.6 b.min-1) handrims were not significantly different. There were also no significant differences between ACE or WERG conditions during maximal effort for VO2 or VE. However, HRpeak during ACE was 7% higher than HRpeak during WERG16 (183 +/- 15 b.min-1 vs. 171 +/- 12 b.min-1, p less than .05), and whole blood HLa during ACE was also significantly higher (by 2.3-2.5 mmol; p less than .05) compared to WERG. There were no significant differences for HR, performance time, or RPE between trials using different handrim diameters during the 1600-m event.(ABSTRACT TRUNCATED AT 250 WORDS) 相似文献
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In this article four anxieties expressed by Peter Gardner about our conception of open-mindedness and its educational implications are examined. It is argued that none of Gardner's anxieties undermine our view that open-mindedness requires neither neutrality nor indecision with respect to a matter in question, but rather that open-mindedness is compatible with holding of beliefs and commitments about such matters provided that the beliefs and commitments are formed and held in such a way that they are open to revision in the light of evidence and argument. 相似文献
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