منابع مشابه
On reciprocal symmetry
On the positive half-line, there are two natural, and complementary, analogues of the single notion of symmetry of distributions on the real line. One is the R-symmetry recently proposed and investigated by Mudholkar and Wang (2007); the other is the ‘log-symmetry’ investigated here. Log-symmetry can be thought of either in terms of a random variable having the same distribution as its reciproc...
متن کاملCrystallographic Symmetry in Reciprocal Space.
8 Oliver, J., Harvey Lectures, Series XL, 1944-1945, p. 102. J. Mount Sinai Hosp. 15, 175, (1948). 9 Dock, W., New Eng. J. Med., 227, 633 (1942). 10 Randerath, E., Ergeb. d. Allg. Path. u. Path. Anat. des Menschen u. der Tiere, 32, 91 (1937). 11 Smetana, H., Am. J. Path., 18, 1029 (1942) and 23, 255 (1947). 12 Monke, J. V., and Yuile, C. L., J. Exp. Med., 72, 149 (1940). Yuile, C. L., and Clark...
متن کاملFivefold Symmetry 1 N Real and Reciprocal Spaces
Tetrahedrally close-packed structures with juxtaposed pentagonal antiprisms, such as the F, C14 Laves and the newly found C phases, were studied by means of HREM and SAD. It was found that each bright spot in the structural image corresponds to an antiprism. Differently oriented domains of these phases intergrow frequently with a fairly good match at the interphase boundary. All diffraction pat...
متن کاملOn Symmetry of Some Nano Structures
It is necessary to generate the automorphism group of a chemical graph in computer-aided structure elucidation. An Euclidean graph associated with a molecule is defined by a weighted graph with adjacency matrix M = [dij], where for i≠j, dij is the Euclidean distance between the nuclei i and j. In this matrix dii can be taken as zero if all the nuclei are equivalent. Otherwise, one may introduce...
متن کاملImpact of Reciprocal Teaching on EFL Learners’ Reading Comprehension
This study investigated the effect of reciprocal teaching (RT) on EFL learners’ reading comprehension. Fifty intermediate learners participated in the study and were sampled as the experimental (n = 25) and control groups (n = 25). Participants were male and ranged in age from 15 to 16. The Reading section of Key English Test (KET, 2010) was used as the pretest to assess the participants’ entry...
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ژورنال
عنوان ژورنال: Journal of Statistical Planning and Inference
سال: 2008
ISSN: 0378-3758
DOI: 10.1016/j.jspi.2007.11.006