Science in developing countries     

D. B. Scully 《Higher Education Quarterly》1967,21(2):219-222

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The importance of appropriate problems in the teaching of mathematics     

E. Georgescu-Buzāu  N. Matei  Gr. Bānescu 《Educational Studies in Mathematics》1970,2(4):430-437

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Expanding College Counseling Services Through Graduate Student Utilization     

Stanley B. Escott 《Counselor Education & Supervision》1967,7(1):36-41

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A DEFENSE OF "RATIONAL" PERSONNEL SELECTION, AND TWO NEW METHODS     

RICHARD B. DARLINGTON 《Journal of Educational Measurement》1976,13(1):43-52

This paper presents two new techniques for use in personnel selection. One is a simple graphical technique which non-technical personnel can use to help in deciding how many minority applicants to admit to an institution. The other is a large-scale computer technique which an institution can use to increase personnel diversity on many variables (including culture) simultaneously. Both techniques appear to have major advantages over the particular technique this author advocated previously (1971). However, the new techniques are based on the same general view the author has expressed earlier (1971, 1973): that personnel selection questions concerning culture must be handled rationally—that is, by human judgment—rather than by mechanical formulas. Early sections of the paper summarize and defend that view.  相似文献   

Medical librarianship,a mid-century survey: a symposium; a salute to some milestones,detours, and dead-ends in the history of the Association     

McDANIEL WB 《Bulletin of the Medical Library Association》1957,45(4):461-466

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Problems for clinical diagnosis     

S B Campbell 《Journal of learning disabilities》1979,12(8):511-513

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American communication in a global society : Glen Fisher Norwood, N.J.: Ablex Publishing Corporation, 1979, 157 pp     

William B. Gudykunst 《Int J Intercult Relat》1980,4(3-4)

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Reference and collection development on the internet: A how-to-do-it manual for librarians: by Elizabeth Thomsen. New York: Neal-Schuman, 1996. 177p. $45.00. ISBN 1-55570-243-0. LC 96-14737 (How-To-Do-It Manuals for Librarians, No. 66).     

B.Jane Scales  Electronic Resources Librarian 《The Journal of Academic Librarianship》1996,22(6):472

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Effects of the model's skill level on observational motor learning.     

B J Pollock  T D Lee 《Research quarterly for exercise and sport》1992,63(1):25-29

Observation of a model prior to physical practice often facilitates the acquisition of motor skills. The majority of research studies on observational motor learning has used a skilled model for the demonstration. Recent research, however, suggests that observing an unskilled (learning) model may also be effective. The experiment reported here compared motor skill acquisition following observation of a learning model or a skilled model to the performance of subjects who lacked the benefit of observation. The task was to play a computer tracking game. Subjects were tested in pairs. Observers watched either a skilled or a learning model perform 3 trials. The observers then practiced the game for 3 trials. Observation of another 12 trials was followed by 12 more practice trials. Substantial observational learning was found, as both groups of observers performed better than the learning models after both the 3 initial trials of observation and after 12 more observation trials. However, there were no differences due to observing the skilled or the learning model. These findings are discussed in relation to theoretical issues of observational learning.  相似文献   

The effects of sodium bicarbonate and pyridoxine-alpha-ketoglutarate on short-term maximal exercise capacity.     

J Linderman  L Kirk  J Musselman  B Dolinar  T D Fahey 《Journal of sports sciences》1992,10(3):243-253

The purpose of this study was to determine the effects of the simultaneous use of pyridoxine-alpha-ketoglutarate (PAK) and sodium bicarbonate (NaHCO3) on short-term maximal exercise capacity in eight well-trained male cyclists. The study consisted of the determination of maximal power output and the administration of various combinations of placebos, PAK and NaHCO3, followed by a short-term maximal exercise test. To determine maximal power output (power(max)), the subjects performed a continuous, incremental test on a Monark bicycle ergometer to symptom limited maximum (test 1). To determine the effects of NaHCO3 and PAK on short-term maximal exercise performance, the subjects were administered either placebo (PLA), PAK and sodium bicarbonate (P/B), PAK and placebo (PAK), or sodium bicarbonate and placebo (BIC) prior to performing short-term maximal exercise (test 2). Oral tablets of NaHCO3 and PAK were given in doses of 200 mg kg-1 and 50 mg kg-1 respectively. The subjects pedalled at the power output corresponding to 100% of their VO2 max at 70 rev min-1 until voluntary cessation or until they were unable to maintain pedal revolution rate. Venous blood samples were drawn at rest (RES), cessation of exercise (CES) and after 2 min of recovery (REC) and analysed for lactate, pH and bicarbonate ion concentration. The subjects attained an average maximum power output of 377 +/- 20 W during the graded maximal pre-test (test 1). There were no significant differences between treatments in the ability to sustain power(max) during test 2. During test 2, the subjects were able to sustain power(max) for 7.6 +/- 4.3 min with P/B, 6.7 +/- 2.9 min with PAK, 7.3 +/- 4.9 min with BIC and 6.9 +/- 2.7 min with placebo (mean +/- S.E.). Blood lactate (BLa) was significantly elevated at cessation of exercise and remained elevated during recovery, but there were no significant differences between treatments. Bicarbonate fell significantly during exercise and recovery in each treatment. At rest, bicarbonate levels were significantly higher in both the P/B and BIC than in the PAK or PLA treatments. Pooled data from the P/B and BIC treatments demonstrated a significant increase in pH at rest and end of exercise when compared to PLA treatment. These data suggest that sodium bicarbonate rather than PAK was responsible for this increase. In summary, our data suggest that in the dosages used in this study, administration of sodium bicarbonate or PAK, alone or in combination, is ineffective in increasing short-term maximal exercise capacity.  相似文献