The False Ontology of School Climate Effects     

Steven I. Miller  Janet Fredericks 《Educational theory》1990,40(3):333-342

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Device for on-the-water measurement of rowing output     

Kyle C. Pilgeram  Michael J. Delwiche 《Sports Engineering》2006,9(3):165-174

All those who compete in the sport of rowing have used the land rowing machine, Ergometer (commonly called the ‘erg’), manufactured by Concept II (Morrisville, Vermont, USA). Ergon is the Greek word for work, hence the Ergometer measures work. Rowers are commonly ranked according to their ‘erg score.’ The fault in this ranking is that the land Ergometer cannot account for many of the important technical aspects associated with rowing on the water. The goals of this project were to (1) develop a system for on-the-water measurement of work during rowing and then (2) demonstrate the potential of such a system to quantify performance and improve rowing technique. To achieve these goals, force was measured using strain gauges glued to the shaft of the rowing oar and angular displacement was measured using a potentiometer. The force and displacement measurements were sent to a microcontroller, which calculated the total work done in a particular stroke, as well as other parameters, and displayed the values to the rower. The parameters were used to evaluate the performance of three collegiate rowers on the water. The data were also used to plot force profiles, which were reviewed with each rower and the coach to illustrate the rowers’ habits and facilitate improving technique. One rower was ‘tutored’ with the device through five on-the-water practices, after which his force profiles and parameter values demonstrated significant improvement. The device not only provided a standard to which all rowers were compared on the water, but also supplied the rowers with important information on technical aspects of their strokes and pacing themselves.  相似文献   

Teacher verbal behavior following student success and failure     

Betsy Miller Hobbs  Richard T Walls 《Contemporary educational psychology》1976,1(3):257-268

Undergraduate subjects taught identifying traits of animals (fish, reptiles, amphibians, mammals) to a fifth grade student confederate over a microphone. Subjects were randomly assigned to one of four conditions in which they failed (F) or succeeded (S) in teaching five animal comparison problems. The four conditions were (a) F, S, S, S, S; (b) F, F, F, S, S; (c) S, F, F, F, S; and (d) S, S, S, F, S. The teaching sessions were tape recorded and analyzed for Teaching Time, Word Rate, and Voice Amplitude. Analyses revealed increased Teaching Time and decreased Word Rate following failure. Voice Amplitude increased across teaching sessions independent of success or failure. Findings were interpreted as more consonant with frustration-aggression than frustrative nonreward energizing theory.  相似文献   

Overview: Science curriculum reform     

James A. Shymansky  William C. Kyle 《科学教学研究杂志》1992,29(8):745-747

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SOURCES OF THE PUBLIC AGENDA:THE PRESIDENT-PRESS-PUBLIC RELATIONSHIP     

Miller  Randy E.; Wanta  Wayne 《Int. Journal of Public Opinion Research》1996,8(4):390-402

This agenda-setting study explores ways that individuals processinformation issues by examining two potential public agendasources: the news media and the president of the USA. The researchersused a two-site study to examine the magnitude of influencefrom media exposure and perceived credibility of source. Itwas found that the higher the level of exposure to media anda presidential state-of-the-union message, the more likely thatissues were considered important. However, when both were examinedsimultaneously, media exposure was the more powerful predictor.Source credibility, both of the media and the president, wasalso found to influence how people perceived the importanceof issues.  相似文献   

Discovering relativity for yourself: By Sam Lilley. Pp. xxxiii + 425. Cambridge University Press. 1981. Hard cover £17.50, Paperback £7.95     

J.C Miller 《Endeavour》1982,6(1):42-43

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Semantically assisted medical bibliographic retrieval: an experimental computer system     

P L Miller  J S Morrow  S M Powsner  C A Riely 《Bulletin of the Medical Library Association》1988,76(2):131-136

An experimental computer-based bibliographic retrieval system has been implemented to explore how semantic (conceptual) relationships between MeSH terms might assist the retrieval process. To construct the experimental system's database, lists of abstracts were produced using MEDLINE. Each list contained papers discussing a specified pair of terms. Each abstract was then analyzed to determine the specific relationship(s) between the two terms discussed in that paper. The project then explored how these semantic relationships could be incorporated into the computer to enhance bibliographic retrieval.  相似文献   

Editorial. Keeping the politics of liberation alive     

William C. Kyle Jr. 《科学教学研究杂志》1995,32(1):1-2

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Methods for estimating the number of relevant documents in a collection     

Don Miller  Robert T. Dattola 《Information processing & management》1982,18(4):179-191

Several statistical sampling methods are evaluated for estimating the total number of relevant documents in a collection for a given query. The total number of relevant documents is needed in order to compute recall values for use in evaluating document retrieval systems. The simplest method considered uses simple random sampling to estimate the number of relevant documents. Another type of random sampling, which assigns unequal selection probabilities to the individual documents in the collection, is also investigated. An alternative approach considered uses curve fitting and extrapolation, where a smooth curve is developed which relates precision to document rank. Another curve relates a function of precision to the query-document score. In either case, the curve is extrapolated to the total number of documents in order to estimate the number of relevant documents. Empirical comparisons are made of all three methods.  相似文献   

The Columbian Exposition of 1893 and the American National Character     

Daniel T. Miller 《Journal of American culture (Malden, Mass. : 2003)》1987,10(2):17-22

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