نتایج جستجو برای: first record of occurrence
تعداد نتایج: 21216113 فیلتر نتایج به سال:
the purpose of this study is identifying effective factors which make customers shop online in iran and investigating the importance of discovered factors in online customers’ decision. in the identifying phase, to discover the factors affecting online shopping behavior of customers in iran, the derived reference model summarizing antecedents of online shopping proposed by change et al. was us...
X-ray computed tomography is used to identify a unique example of fossilized phoresy in 16 million-year-old Miocene Dominican amber involving a springtail being transported by a mayfly. It represents the first evidence (fossil or extant) of phoresy in adult Ephemeroptera and only the second record in Collembola (the first is also preserved in amber). This is the first record of Collembola using...
the first occurrence of two parasitoid species belonging to the family pteromalidae (hym.: chalcidoidea) in alfalfa fields of maragheh (azarbaijan sharghi province) are reported: 1- halticopterina moczari erdã¶s, which was collected in 22 june 2003, and 2- trichomalus rufinus (walker) which was collected in 3 august 2003. both species were collected on medicago sativa by the second author.
there are two major theories of measurement in psychometrics: classical test theory (ctt) and item-response theory (irt). despite its widespread and long use, ctt has a number of shortcomings, which make it problematic to be used for practical and theoretical purposes. irt tries to solve these shortcomings, and provide better and more dependable answers. one of the applications of irt is the as...
on this project we try to calculated power of hydrogen on dycarbonil compound in different ways ; the first way is shoster way , for sain power of hydrogen notice the different power between central conforms on it and main conform that’s didn’t have hydrogen joint . or in other way different of energy between open and close form. second way, is average way? this is for way that studied conf...
in fact this study is concerned with the relationship between the variation in thematice structure and the comprehension of spoken language. so the study focused on the following questions: 1. is there any relationship between thematic structure and the comprehension of spoken language? 2. which of the themes would have greated thematic force and be easier for the subjects to comprehend? accord...
poecilus beesoni (andrewes) collected at lake izeh (khuzestan) is recorded for the first time for iran. for identification the holotypes of poecilus beesoni and p. affinissimus were compared. based on this study poecilus affinissimus (ali 1967) is synonymized with poecilus beesoni (andrewes, 1927).
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