منابع مشابه
Epidemiology of Alcohol-Related Accidents and the Grand Rapids Study.
Although it was evident from the early years of this century that alcohol was associated with motor vehicle injury, and although strict laws were enacted in both the U.S. and elsewhere imposing severe penalties for drunken driving, in the U.S. drinking and driving was so widespread that it was generally not viewed as a major offense. Severe penalties were rarely imposed, and the practice of red...
متن کاملGrand Challenges in Educational Psychology
Educational Psychology has a long tradition as a specialty within the field of psychology , formally recognized as a discipline in 1910, when the Journal of Educational Psychology (JEP) began publication. Early psychologists, such as William James and Wilhelm Wundt 1900) both focused on issues central to educational psychology today (e.g., cog-nitive processes, memory, and effective teaching). ...
متن کاملInteraction between Kinetin and Light on Germination of Grand Rapids Lettuce Seeds.
At 260 Grand Rapids lettuce seeds require an exposure to white or red (6500A-6800A) light in order to germinate. This stimulating effect is reversed if this illumination is followed immediately by a brief exposure to far-red light (7000A-7500A). This phenomenon, discovered by Flint and McAllister (4), has been widely studied (3, 8). Many factors, such as lowering the temperature to 160 (1), can...
متن کاملMeasurement in Educational Research
Without measurement, forward progress would not be possible in educational or other research contexts. Measurement, the process by which a variable is operationalized for the purpose of describing that variable in a quantitative manner (Hills, 1981; Kane, 2001), serves as the link between questions and answers. While the process of measurement bridges the gap between research objectives/questio...
متن کاملGrand Challenges in BSDF Measurement and Modeling
Measuring and representing reflection and transmission accurately are core to high fidelity visual simulation of materials. However, state-of-the-art Bidirectional Scattering Distribution Function (BSDF) models do not suggest a general solution for any surface class, from glasses to metals, isotropic to anisotropic materials, and daylight redirecting films. Furthermore, an accurate BSDF acquisi...
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ژورنال
عنوان ژورنال: The Journal of Educational Research
سال: 1920
ISSN: 0022-0671,1940-0675
DOI: 10.1080/00220671.1920.10879095