نتایج جستجو برای: dual two
تعداد نتایج: 2557693 فیلتر نتایج به سال:
Introduction and purpose: Balancing is recognized as one of the most important challenges in the aging period. The purpose of the present study was to determine the effect of dual and single task training on the balance traits of male elderly people. Materials and methods: Twenty elderly subjects who were available and qualified were selected and randomly divided into two groups of 10, includi...
Background and purpose: Dual-energy mammography is a technique which is used to enhance the accuracy of breast cancer diagnosis especially in dense breasts. This study was conducted based on the simultaneous use of two contrast agents for automatic separation and also to evaluate their accuracy using dual-energy digital mammography. Materials and methods: A breast phantom was designed and b...
in this paper, first we develop the duality concept for $g$-bessel sequences and bessel fusion sequences in hilbert spaces. we obtain some results about dual, pseudo-dual and approximate dual of frames and fusion frames. we also expand every $g$-bessel sequence to a frame by summing some elements. we define the restricted isometry property for $g$-frames and generalize some resu...
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