منابع مشابه
Lose some, save some: Obesity, automobile demand, and gasoline consumption
This paper examines the unexplored link between the prevalence of overweight and obesity and vehicle demand in the United States. Exploring annual sales data of new passenger vehicles at the model level in 48 U.S. counties from 1999 to 2005, we find that new vehicles demanded by consumers are less fuel-efficient on average as a larger share of people become overweight or obese. The OLS results ...
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A classical assumption in the theory of degradation models is that the quality of a device is described by a non-negative diffusion process {X(t), t ≥ 0} starting at X(0) = x0 > 0. Assuming that large values of X(t) correspond to a better quality, the level X(t) = 0 stands for zero quality, i.e. for the lack of functionality of the device. Consequently, the first-passage time T of {X(t)} throug...
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BACKGROUND AND AIMS There is no consensus among surgeons on the indication of putting drains for in groin hernias. In this study we aimed to investigate the factors that are associated with drain usage by comparing the clinical characteristics of patients who had drains with the patients without drains in the repair of groin hernias. MATERIAL AND METHODS The data of all groin hernia repairs f...
متن کاملReconstructing Repairs of Census Data Forms as Database Repairs
In the context of consistent query answering (CQA) from inconsistent databases, the notion of repair is fundamental. A repair is a new database instance that minimally differs from the original, inconsistent database, but does satisfy the integrity constraints. Minimality usually refers to a minimal set of tuples on which the two instances differ. In this paper we reexamine the process of corre...
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AIM Review of our experience and to develop an algorithm for salvage procedures in the management of hypospadias cripples and treatment of urethral strictures following hypospadias repair. METHODS This is a retrospective review of hypospadias surgeries over a 41-month period. Out of a total 168 surgeries, 20 were salvage/re-operative repairs. In three children a Duplay repair was feasible, wh...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1913
ISSN: 0036-8733
DOI: 10.1038/scientificamerican06281913-583a