نتایج جستجو برای: sum or negative
تعداد نتایج: 3909530 فیلتر نتایج به سال:
A Cox regression multivariate analysis was done to determine the clinical and pathological indicators that predict for prostate specific antigen (PSA) failure in 347 patients who underwent radical prostatectomy for clinically localized prostate cancer between 1989 and 1993. In the patient subgroups (PSA less than 20 ng./ml. and biopsy Gleason sum 5 to 7 or PSA more than 10 to 20 ng./ml. and bio...
In this paper, our objective is maximizing total sum-rate subject to power constraints on total relay transmit power or individual relay powers, for amplify-and-forward single-antenna relay-based wireless communication networks. We derive a closed-form solution for the total power constraint optimization problem and show that the individual relay power constraints optimization problem is a quad...
in this paper, some results of the chebyshev type integral inequality for the pseudo-integral are proven. the obtained results, are related to the measure of a level set of the maximum and the sum of two non-negative integrable functions. finally, we applied our results to the case of comonotone functions.
Let T = (V,E) be a tree. A core of T is a path P , such that the sum of the weighted distances from all vertices to this path is minimized. In this paper we consider the semi-obnoxious case where the vertices have positive or negative weights. We prove that if the sum of the weights of vertices is negative the core must be a single vertex and when the sum of the weights of vertices is zero ther...
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