نتایج جستجو برای: primary and secondary structures
تعداد نتایج: 16992928 فیلتر نتایج به سال:
A possible upgrade of a curriculum in undergraduate course in combinatorics is presented by giving more bijective proofs in the standard (or primary) combinatorics and by adding some topics on more refined (or secondary) combinatorics, including Dyck and Motzkin paths, Catalan, Narayana and Motzkin numbers and secondary structures coming from biology. Some log–convexity properties and asymptoti...
abstract english language learning in iran has become significant in recent years, and english has been included in the curriculum of iranian schools and universities, and considerable attention has been paid to this language in our society. nevertheless, teaching and learning english in iranian schools has not been able to satisfy the specified goals, so different efl institutes have been est...
مدیریت تداخل در شبکههای رادیوشناختگر با استفاده از شکلدهی پرتو همکارانه تحت اطلاعات غیر دقیق کانال
In this paper, a more realistic cognitive radio network is proposed which considers several secondary links, some secondary relays, and one primary link. In the network, there are two steps of transmission from secondary sources to secondary destinations. At the first step, when primary link is idle, all of the secondary sources simultaneously broadcast their information to the relays. At the s...
This commentary presents a conceptual framework, Quality in the Continuum of Cancer Care (QCCC), for quality improvement studies and research. Data sources include review of relevant literature (cancer care, quality improvement, organizational behavior, health services evaluation, and research). The Detecting Early Tumors Enables Cancer Therapy (DETECT) project is used to apply the QCCC model t...
Background and Aim: The results of pervious researches in comparision psychological problems among primary and secondary enuresis has been inconstant. The aim of the present study was to compare the interactions between parent–child and the behavioral problems between these two subtypes. Methods: The present research design was of comparative type and its statistical population consisted of th...
bserved by many teachers that most of the time, mumbling and searching for their intended words, students complain why they have forgotten the words they have learned in the previous semesters. they ask for some new ways that may help them to recall and apply the learned words more efficiently, since as they declare one of the most important skills in foreign language learning is having a g...
in this thesis, structural, electronical, and optical properties of inverse pervskite(ca3pbo) in cubic phase have been investigated.the calculation have been done based on density functional theory and according to generalized gradiant approximate (gga) as correlating potential. in order to calculate the configurations, implementing in the wien2k code have been used from 2013 version. first of ...
this study was carried out to investigate the morphological and anatomical aspects of somatic embryogenesis in date palm. lateral bud and shoot tip explants excised from young offshoots were cultured on ms medium with 2,4-d. somatic embryogenesis was in-duced by transferring the calli produced on the same medium without hormones. micro-tome sectioning of paraffin-embedded specimens was carried ...
this study examines the effetivenss of task-based activities in helping students learn english language structures for a better communication. initially, a michigan test was administered to the two groups of 52 students majoring in english at the allameh ghotb -e- ravandi university to ensure their homogeneity. the students scores on the grammar part of this test were also regarded as their pre...
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