In data envelopment analyze (DEA) the scale efficiency in the input-oriented CCR model is less than or equal to the scale efficiency in DEA based on the fractional analysis (DEA-R). Also, the scale efficiency in case of multiple inputs and one output and vice versa the scale efficiencies are equal in DEA and DEA-R. In this paper, first, DEA-R model with weight restrictions when there is relativ...

According to the studies and comments of the experts, addiction is a difficult problem in our society. Nowadays, the most important issue related to addiction in our country is the second return of addicts to narcotic substances after once quitting them. In fact, this is the indication of failure or weak performance of addiction-therapy techniques, emphasizing on its physical aspect. However, a...

Quantitative analysis of production through evaluation of inputs consumption quantity is of main principles in agricultural policies, which is followed by increasing in production through optimal use of resources. This study has been conducted to estimate different types of production functions in mechanized farms of broiler chicks located in Gorgan city. Cross-section survey data were gathered...

We define the notion of a Kirby element of a ribbon category C (not necessarily semisimple). Kirby elements lead to 3-manifolds invariants. We characterize a set of Kirby elements (in terms of the structural morphisms of a Hopf algebra in C) which is sufficiently large to recover the quantum invariants of 3-manifolds of Reshetikhin-Turaev, of Hennings-Kauffman-Radford, and of Lyubashenko. The c...

background: northern ontario, canada has a larger elder population, more resource-based employment, and limited access to physicians and specialists compared to southern ontario. given these important differences, it is possible that work disability rates will vary between the two ontario jurisdictions. objective: to determine the association between time lost due to workplace injuries and illn...

conclusions more than half of the patients were disabled after 3 months of trauma. elderly patients, patient with severe trauma, and long hospitalization and patients with extremity injuries were high risk for disability. results the mean disability scores at 1 and 3 months post-injury was 30.3 (9.2) and 18.8 (8.3), respectively and there was a statistical significant difference between disabil...