“Color Science: Concepts and Methods, Quantitative Data and Formulas” (Günter Wyszecki and W. S. Stiles; 1967) [Books Reviewed]

1967 ◽  
Vol 76 (11) ◽  
pp. 1154-1154 ◽  
Author(s):  
Pierre Mertz

1967 ◽  
Vol 18 (10) ◽  
pp. 353-353 ◽  
Author(s):  
W D Wright


Physics Today ◽  
1968 ◽  
Vol 21 (6) ◽  
pp. 83-84 ◽  
Author(s):  
Günter Wyszecki ◽  
V. S. Stiles ◽  
Kenneth L. Kelly


1968 ◽  
Vol 81 (1) ◽  
pp. 128
Author(s):  
Jozef Cohen ◽  
Gunter Wyszecki ◽  
W. S. Stiles




2020 ◽  
Vol 4 (1) ◽  
pp. 41-49
Author(s):  
Nur Akcanca ◽  
Lale Cerrah Özsevgeç

This study aimed to investigate the effects of different active teaching techniques on pre-school student teachers' concept learning and academic achievement. The study group consisted of 46 third year pre-school student teachers in a public university. Different active teaching methods were used during the single term Science Course, a compulsory course in the Preschool Programme. The treatment process took ten weeks in total (4 hours per week). The study had both qualitative and quantitative data. The quantitative data were collected using a three-tiered science concepts test, and qualitative data were collected through observation by the researcher. The alpha Cronbach values calculated for the test's reliability were 0.642 for Success-1 (S1) and 0.52 for Misconception-3 (MC3) scores. A dependent t-test was used to compare the pre and post-test scores of the pre-school student teachers. The researcher took observation notes during the in-class teaching exercises. The findings revealed that there were significant differences between the student teachers' pre and post-test scores. They understood science concepts significantly better by the end of the course. It is concluded that combining different teaching methods enhances science concept understanding among student teachers.  In addition, misconceptions decreased after instruction.



Author(s):  
L.E. Murr

Ledges in grain boundaries can be identified by their characteristic contrast features (straight, black-white lines) distinct from those of lattice dislocations, for example1,2 [see Fig. 1(a) and (b)]. Simple contrast rules as pointed out by Murr and Venkatesh2, can be established so that ledges may be recognized with come confidence, and the number of ledges per unit length of grain boundary (referred to as the ledge density, m) measured by direct observations in the transmission electron microscope. Such measurements can then give rise to quantitative data which can be used to provide evidence for the influence of ledges on the physical and mechanical properties of materials.It has been shown that ledge density can be systematically altered in some metals by thermo-mechanical treatment3,4.



Author(s):  
M.E. Rosenfeld ◽  
C. Karboski ◽  
M.F. Prescott ◽  
P. Goodwin ◽  
R. Ross

Previous research documenting the chronology of the cellular interactions that occur on or below the surface of the endothelium during the initiation and progression of arterial lesions, primarily consisted of descriptive studies. The recent development of lower cost image analysis hardware and software has facilitated the collection of high resolution quantitative data from microscopic images. In this report we present preliminary quantitative data on the sequence of cellular interactions that occur on the endothelium during the initiation of atherosclerosis or vasculitis utilizing digital analysis of images obtained directly from the scanning electron microscope. Segments of both atherosclerotic and normal arteries were obtained from either diet-induced or endogenously (WHHL) hypercholesterolemic rabbits following 1-4 months duration of hypercholesterolemia and age matched control rabbits. Vasculitis was induced in rats following placement of an endotoxin soaked thread adjacent to the adventitial surface of arteries.



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