نتایج جستجو برای: Returns to Scale (RTS)
تعداد نتایج: 10722379 فیلتر نتایج به سال:
Objective To verify correlations between age, injury severity, length of stay (LOS), cognition, functional capacity and quality of life (QOL) six months after hospital discharge (HD) of victims of traumatic brain injury (TBI). Method 50 patients consecutively treated in a Brazilian emergency hospital were assessed at admission, HD and six months after HD. The assessment protocol consisted in Ab...
An important property of production functions is the concept return to scale (RTS) as found in the literature. There are two common variations RTS in data envelopment analysis (DEA) used, constant return to scale (CRS) and variation return to scale (VRS). The envelopment surface in BCC model is VRS and this is the result of the presence of the convexity constraint in the dual model and, equival...
the purpose of this quantitative study was to investigate the relation between efl teachers’ self-efficacy beliefs and their success. moreover, the study was an analysis of the teacher age, gender and years of teaching experience, to examine the manner in which these factors relate to teacher self-efficacy as defined by bandura (1997) and teaching effectiveness as evaluated by their own student...
to explore the idea the investingation proposed, aimed at finding whether the performances of the population of iranians students studying english in an efl context are consistent in l1 and l2 writing taks and whether there is a cross-linguistic transfer in this respect. in this regard the subjects were instructed to write four compositions-two in english and two in farsi-which consisted of an ...
background: in response to the need for diagnosis and treatment, medical radiation has been increasingly used worldwide. this study investigated the medical utilization of radiation-related diseases among radiological technologists (rts) and factors that influence such diseases. materials and methods: data were collected from the taiwan national health insurance research database. a panel study...
We estimate a health investment equation, derived from a health capital model that is an extension of the well-known Grossman model. Of particular interest is whether the health production function has constant returns to scale, as in the standard Grossman model, or decreasing returns to scale, as in the Ehrlich-Chuma model and extensions thereof. The model with decreasing returns to scale has ...
The broadcast nature of wireless networks is the source of both their utility and much of their complexity. To turn what would otherwise be unwanted interference into an advantage, this paper examines an entirely backwardscompatible extension to the 802.11 link-layer protocol for making use of overheard packets, called RTS-id. RTS-id operates by augmenting the standard 802.11 RTS/CTS process wi...
∗ Much research has shown that a carefully designed auto rate medium access control can utilize the underlying physical multi-rate capability to exploit the time-variation of channel. In this paper, we develop a simple analytical model to investigate the rule maximizing the throughput of RTS/CTS based multi-rate wireless local area networks. Based on the obtained rule, we propose two distribute...
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