نتایج جستجو برای: and challenge
تعداد نتایج: 16843943 فیلتر نتایج به سال:
A QTW VTOL UAV, featured tandem tilt wings and propellers mounted at the mid-span of each wing, is one of the most promising UAV configurations having both a VTOL capability and high cruise performance. A small prototype QTW UAV has been constructed to prove the concept and full transition between vertical and horizontal flight has been successfully demonstrated under remote manual control. The...
abstract: fortunately in recent years in iran, semiotics arguments in literature and art study are noticed by researchers. in according to, the denotation and connotation functions in photography are updated and expanded. thus, necessary bases for continuing this argument are available. although denotation and connotation are belong to semiotics area, but in photography, specially critique of p...
From the early beginning of his mission, the Prophet of Islam (pbuh) was ordered to introduce the God, who had come to his knowledge, to the pagans inhabited in Mecca and invite them to the monotheism and unitarianism. He knew that the racked intellectual and social structure of Mecca will create some difficulties in the way of his mission. In spite of the obstacle, which method was selected by...
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This document expands on TR98-13, adding details consistent with operation of an initial prototype for AnimMagix and including projections for further development. AnimMagix is part of the Magix series of playful learning environments. In AnimMagix, children create whimsical creatures with anthropomorphic behaviors and launch them onto a field in which the creatures interact and affect one anot...
A record of Pb isotopic compositions and Pb and Ba concentrations are presented for the EPICA Dome C ice core covering the past 220 ky, indicating the characteristics of dust and volcanic Pb deposition in central East Antarctica. Lead isotopic compositions are also reported in a suite of soil and loess samples from the Southern Hemisphere (Australia, Southern Africa, Southern South America, New...
objective: during recent years, opium consumption has increased among iranian diabetic men. the belief that opium consumption can control or even eradicate dm is increasing. this study was conducted to compare the blood sugar, hba1c, lipid profile and the frequency of diabetes complications in male type ii diabetic patient with and without opium consumption. materials and methods: two hundred t...
s:1858:"Background: Infertility is defined as inability in pregnancy after one year of regular intercourse without using contraceptive methods. Approximately15-10% of couples in childbearing appears infertile. It is the cause of infertility in men and women and infertility treatment depends on type of failure and is one of the methods of treating infertility in vitro fertilization. This researc...
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