نتایج جستجو برای: quality and quantity
تعداد نتایج: 16922884 فیلتر نتایج به سال:
a significant problem in multicarrier communication systems is the necessity to reduce the value of papr (peak-to-average power ratio) of transmitting signal. in this thesis we study the effect of the system parameters such as coding and modulation types on papr and ultimate ber in a mc-cdma system. in this study we consider fading channel as well as the nonlinearity of transmitter’s amplifier ...
Eric S Underbakke and Laura L Kiessling The EMBO Journal (2010) 29, 4237. doi:10.1038/emboj.2010.303 Correction to: The EMBO Journal (2010) 29, 3435–3436. doi:10.1038/emboj.2010.246 Since the publication of this paper, the authors have noticed errors in reference citations. On page 3436, left column, rows 24 and 32, the reference citations for ‘Sourjik and Berg, 2004’ should instead refer to ‘N...
Journal of Hematology & Oncology is pleased to see the exponential growth in the number of publications from China, especially in hematology and oncology. This editorial calls for putting more weight on the quality of the future scientific output and invites rigorous dialogs among policy makers, granting agencies, academic leaders, physicians, and scientists, followed by concrete actions, to ac...
the high quality and quantity seed production in old saxual shrubs are essential for regeneration and sustainable development of saxual forests in desert areas. the objective of this study was to determine the effects of different pruning height on saxual seed production. the study was carried out in an obviously wilted saxual forest located in ashkezar desert in yazd in 1994. the experiment wa...
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