Designing instruction: Practical strategies—8. Teaching psychomotor skills     

Donald A. Stepich  Timothy J. Newby 《Performance Improvement》1990,29(4):47-48

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Resting MAPK expression in chronically trained endurance runners     

Justin X. Nicoll  Andrew J. Galpin  Donald B. Thomason  Christopher A. Moore 《European Journal of Sport Science》2017,17(9):1194-1202

Purpose: There is a paucity of research investigating the expression of mitogen-activated protein kinases (MAPK) in chronically trained (CT) athletes. Thus, it is unclear how MAPK may contribute to performance and muscle adaptation in CT subjects. The purpose of this study was to determine MAPK total protein, and phosphorylated expression of extracellular signal-regulated kinases 1 and 2 (ERK1/2), c-Jun N-terminal kinase (JNK), and p38-MAPK (p38) between untrained, and chronically trained runners. Methods: Tissue samples were analysed from sedentary (SED; n?=?5) controls and chronically trained runners (CT; n?=?5). Resting muscle biopsy samples were analysed for total-MAPK – and ratio of phosphorylated/total (p-MAPK) – ERK1/2, JNK, and p38-MAPK via western blotting. Mann–Whitney U tests and effect sizes were utilized to determine differences in total MAPK protein content and phosphorylation status between SED and CT subjects. Results: There was no difference in total-MAPK expression between SED and CT (p?>?.05). p-p38-MAPK tended to be greater for CT compared to SED (p?=?.07). There were moderate effect sizes of decreased pERK/total-ERK (d?=??0.69) and increased pJNK/total-JNK (d?=?0.54) in CT compared to SED. There was a positive correlation between p-p38-MAPK/total-MAPK and the percentage of type I fibres (r?=?0.73, p?=?.016). Conclusion: Contrary to previous studies, chronic endurance training does not greatly influence total MAPK protein expression in chronically trained runners. However, resting phosphorylation of p38-MAPK may contribute to enhanced oxidative metabolism at chronically trained levels. These alterations are likely involved in the different physiological adaptations that occur following long-term training or at highly competitive levels.  相似文献   

Regular class teachers' perceptions of transition programs for EMR students and their impact on the students     

Donald L. MacMillan  C. Edward Meyers  Roland K. Yoshida 《Psychology in the schools》1978,15(1):99-103

This study was designed to obtain the perceptions of regular class teachers who taught children who had been in EMR programs, but had been decertified (D) and returned to regular classes in response to court cases and recent legislation. A cohort of regular class (RC) students were selected for comparative purposes. It was found that D students were placed into low ability classes; yet, teachers perceived D subjects to be significantly lower than RC students in both academic achievement and social acceptance. Only a small proportion of teachers indicated that the enrollment of D students had much impact on the regular class instructional program. However, the teachers were rather critical of the services received under the auspices of a transitional program, indicating in large part that the services were either not apparent or ineffective.  相似文献   

Predicting student self-concept,anxiety, and responsibility from self-evaluation and self-praise     

Peter J. Brady  Cyril I. Figuerres  Donald W. Felker  Wayne M. Garrison 《Psychology in the schools》1978,15(3):434-438

Nineteen elementary teachers were observed for the frequency with which they modeled self-praise for their students and taught their students to praise and evaluate themselves. Measures of student self-concept, anxiety, and achievement responsibility were taken at the end of the year. It was found that teacher modeling of self-praise correlated negatively with boys' selfconcept and positively with girls'. Teacher encouragement of students to praise other students correlated positively with boys' anxiety and negatively with girls'. Teacher modeling of self-praise and teacher encouragement of students to praise other students were the best predictors of self-concept.  相似文献   

Comparison between artificial and natural solarization and stabilization of special ultraviolet transmitting glasses commercially on the market     

Donald C. Stockbarger  Lyman B. Johnson 《Journal of The Franklin Institute》1930,210(4):455-459

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Mathematics,queen and servant of science: by E. T. Bell. 437 pages,illustrations, 14 × 21 cm. New York,McGraw-Hill Book Co., 1951. Price, $5.00     

Donald B. Houghton 《Journal of The Franklin Institute》1951,251(5):555

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Book reviews     

J. Bruce Francis  Michalina Vaughan  Colin Flood Page  Sally Tomlinson  R. A. Becher  Margaret C. Ives  John Urry  K. G. Collier  Meir Zadok  Charles Carter  Jürgen Schramm  Jean Barry  Graeme C. Moodie  Donald Bligh  R. A. King  D. G. Mulcahy  Peter Scott  F. R. Charmer  T. R. Bone  John A. Hughes  Roger Greenhough  Alec M. Ross  John Wakeford  Joyce Skinner  Duncan B. Nimmo  Cedric Cullingford  L. R. B. Elton 《Higher Education》1979,8(6):709-744

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Book reviews     

A. G. M. Ishumi  Birgit Brock Utne  Donald P. Ely  Arthur Gillette 《Prospects》1979,9(1):115-121

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The preparation and immunogenic properties of an ultraviolet-inactivated poliomyelitis vaccine     

Donald W. McKinstry  Elizabeth H. Reading 《Journal of The Franklin Institute》1944,237(1):71-73

Details of the preparation and the immunogenic properties of an ultraviolet-inactivated poliomyelitis vaccine are described. The data presented indicate that the SK murine strain of the virus may be inactivated by controlled irradiation and yet retain sufficient immunizing potency to protect mice against 1,000 to 10,000 M.L.D. of the active virus administered intraperitoneally or intranasally.  相似文献   

Analogizing as an instructional strategy     

Donald A. Stepich  Timothy J. Newby 《Performance Improvement》1988,27(9):21-23

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