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Sammy Perone Stephen J. Molitor Aaron T. Buss John P. Spencer Larissa K. Samuelson 《Child development》2015,86(3):812-827
Executive functions enable flexible thinking, something young children are notoriously bad at. For instance, in the dimensional change card sort (DCCS) task, 3‐year‐olds can sort cards by one dimension (shape), but continue to sort by this dimension when asked to switch (to color). This study tests a prediction of a dynamic neural field model that prior experience with the postswitch dimension can enhance 3‐year‐olds' performance in the DCCS. In Experiment 1A, a matching game was used to preexpose 3‐year‐olds (n = 36) to color. This facilitated switching from sorting by shape to color. In 3 , 3‐year‐olds (n = 18) were preexposed to shape. This did not facilitate switching from sorting by color to shape. The model was used to explain this asymmetry. 相似文献
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Pamela Samuelson 《Publishing Research Quarterly》1995,11(1):27-39
The digitization of works renders them not only easy to copy and distribute. It makes them easy to transform from one medium
to another. Many of the same fair use questions posed by the copying or use of computer programs recur when other kinds of
digital data are copied or manipulated. There are some situations in which digital copying would almost certainly be permitted
as fair use, and some in which fair use defenses would be futile.
This article was adapted from a column that first appeared inACM Communications. Published by permission of the Association for Computing Machinery. 相似文献
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It is generally accepted that engineering requires a strong aptitude for mathematics and science; therefore, students’ judgments regarding their competence in these areas as well as engineering likely influence their confidence in engineering. Little is known about how self-confidence in science, mathematics, and engineering courses (STEM confidence) varies at the intersection of race/ethnicity and gender. To fill this gap, this study examined the STEM confidence of multiple groups in undergraduate engineering programs. Results indicated that although some underrepresented groups may have lower STEM confidence overall, this finding no longer applies to all groups after controlling for personal, environmental, and behavioral factors. Specifically, African-American and Hispanic men report higher average STEM confidence than White men after controlling for these associated measures. In addition, White women continue to report lower average STEM confidence than White men after controlling for these measures, while other groups do not differ from White men. Further, many elements of student perception, including student views of professors, comparisons to peers, perceptions of the field as rewarding, and desirability of chosen major are positively associated with student STEM confidence. The changing patterns of significance for race/ethnicity and gender groups between the two models indicate that personal, environmental, and behavioral factors have different relationships with STEM confidence levels for different groups. This study contributes an understanding that gender differences in STEM confidence are not indifferent to racial and ethnic context. Social-cognitive theory provides a valuable framework for studying student academic confidence and would improve future self-confidence research. 相似文献
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Mitchell V. Charnley Blair Charnley Jerry McGuire David W. Samuelson David W. Samuelson H. William Bockhus 《Communication Booknotes Quarterly》2013,44(10):200-203
Mitchell V. Charnley and Blair Charnley, Reporting (New York: Holt, Rinehart & Winston, 1979—$9.95, paper) Jerry McGuire's How to Write, Direct & Produce Effective Business Films and Documentaries (Blue Ridge Sunimit, Pa.: TAB Books, 1978—$14.95) David W. Samuelson's Motion Picture Camera & Lighting Equipment: Choice & Technique (London and New York: Focal Press, 1977 (but not released in the US until February 1979) David W. Samuelson's Motion Picture Camera Techniques (New York: Focal Press/Hastings House, 1978—$8.95, paper) H. William Bockhus, Jr.'s Advertising Graphics (London: Collier Macmillan/New York: Macmillan, 1979—price not given, paper) Stuart W. Hyde's Television and Radio Announcing (Boston: Houghton Mifflin, 1979-415.95) Robert McLeish, The Technique of Radio Production (London and New York: Focal Press, 1979—$18.95) David Lachenbruch's Videocassette Recorders: The Complete Home Guide (New York: Everest House, 1979—$6.95, paper) Charles Bensinger, The Video Guide (Video-Info Publications, P.O. Box 1507, Santa Barbara, Calif. 93102—$14.95, paper) Deirdre Boyle, ed. Expanding Media (Phoenix, Ar.: Oryx Press, 1977—$13.95) Dan Poynter's The Self-Publishing Manual: How to Write, Print and Sell Your Own Book (Parachusting Publications, P.O. Box 4232, Santa Barbara, Calif. 93103—$14.95/9.95) 相似文献
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Dinitrogen (N2) is a very stable and inert molecule due to the formation of a triple bond between the two atoms. Surprisingly isoelectronic
molecules are quite reactive making dinitrogen very useful and unique. 相似文献
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