نتایج جستجو برای: dose step up

تعداد نتایج: 1429827  

ژورنال: سنجش و ایمنی پرتو 2020

Brachytherapy, is a method to treat prostate cancer in which a radiation source is placed inside or next to the cancer affected tissues. Purpose of this article is to determine the uncertainty level of received dose in prostate tissue due to the relocation of the placed radiation sources and inflation in prostate after positioning the radiation seeds. To simulate the model 6711 Amersham (activi...

Journal: :Science 2017
Naomi J Schrag G Michael Purdy

n response to calls for change from within and outside the scientific community, funding agencies, journals, and professional societies are developing new requirements to promote reproducibility and integrity in research. Amid this activity, the voices of academic institutions—both their leadership and rank-and-file faculty—have largely been quiet. Yet journals, societies, and funding agencies ...

2005
NHAN LEVAN DOUGLAS G. LAMPARD

Abstracf-This paper presents a method of characterizing n-port networks. It is shown that a large class of lossless n-ports can he characterized by sequences of step-up vectors, i.e., vectors that form successive incident voltages to the networks and are orthonorma1 at the same time. As a result, lossless networks can be classified into several classes. The most interesting one is, perhaps, the...

Journal: :Math. Comput. 2011
Felix Fontein

In this paper, we show a general way to interpret the infrastructure of a global field of arbitrary unit rank. This interpretation generalizes the prior concepts of the giant-step operation and f -representations, and makes it possible to relate the infrastructure to the (Arakelov) divisor class group of the global field. In the case of global function fields, we present results that establish ...

Journal: :Journal of Research of the National Bureau of Standards, Section C: Engineering and Instrumentation 1960

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