T paper studies how judicious resource allocation in networks mitigates risk. Theory is presented for general utility functions and mean-variance formulations and is illustrated with networks featuring resource diversification, flexibility (e.g., inventory substitution), and sharing (commonality). In contrast to single-resource settings, risk-averse newsvendors may invest more in networks than ...

BACKGROUND We aimed to assess the measurement properties and the minimal important difference (MID) of the 1-min sit-to-stand (STS) test in cystic fibrosis (CF). METHODS Patients with CF were tested during a pulmonary rehabilitation program. Five STS tests were performed during the program; two tests at the beginning (STS0 and STS1) and three tests at the end (STS2a-2c). Exercise capacity, pu...

The amplitude-constrained capacity of a scalar Gaussian channel is shown to be achieved by a unique discrete random variable taking on a finite number of values. Necessary and sufficient conditions for the distribution of this random variable are obtained. These conditions permit determination of the random variable and capacity as a function of the constraint value. The capacity of the same Ga...

in this project creep feed grinding process of gas turbine blade root is investigated with the aim of consistant and controlable production. inthispaper, effectiveness of creep feed grinding process prometers suchas wheel speed, workpiece speed, grind depth and dresser speed are investigated. this investigation include their interaction on thelob of gas torbine blade root, as amajor cause of a ...

the purpose of this study was to determ the degree, level and capacity indices of agricultural mechanization in sarab region (n: 37º45', e: 47º30') in eastern azarbayjan province, comprising about 65,164 hectares of farming land. the number of tractors, types of machines, and degree, level, and capacity of mechanization were calculated as the method of study. data showed that the average level ...

The present study examined the claim that secondary memory processes account for the correlation between working memory capacity and fluid intelligence via a latent variable analysis. In the present study, participants performed multiple measures of secondary memory, working memory capacity, and fluid intelligence. Structural equation modeling suggested that both secondary memory and working me...

management scientists state that for the purpose of surviving and developing, it is necessary to be engaged in learning forever. learning can help' organizations with any changes, innovations, and creations. according to studies, the learning capacity in nationwide administrative organizations is rather low. in this article, first the concept and also the necessary characteristics for learning ...