Since the original publication on Data Envelopment Analysis (DEA) by Charnes et al. (1978), a considerable amount of research publications have appeared in decision science literature, a significant portion of which focusing on efficiency and productivity in the banking sector. A comprehensive survey of bank efficiency studies could be found in Fethi and Pasiouras (2010). They have examined ban...

Motivated by the recent popularization of beta prime distribution, a more flexible generalization is presented to fit symmetrical or asymmetrical and bimodal data, non-monotonic failure rate. Thus, Weibull-beta distribution defined, some its structural properties are obtained. The parameters estimated maximum likelihood, new regression model proposed. Some simulations reveal that estimators con...

• The distribution of the variables that originates from monitoring the variance when the mean encountered a sustained shift is considered — specifically for the case when measurements from each sample are independent and identically distributed normal random variables. It is shown that the solution to this problem involves a sequence of dependent random variables that are constructed from inde...

Neutrinoless double beta decay ($0\nu\beta\beta$) nuclear matrix elements (NME) are the object of many theoretical calculation methods, and very important for analysis guidance a large number experimental efforts. However, there discrepancies between NME values provided by different methods. In this paper we propose statistical $^{48}$Ca $0\nu\beta\beta$ using interacting shell model, emphasizi...

We study the cyclic vectors and spanning set of circle for $\ell^p\_\beta(\mathbb{Z})$ spaces all sequences $u= (u\_n ){n\in \mathbb{Z}}$ such that $(u\_n (1+|n|)^{\beta} \mathbb{Z}} \in \ell^p(\mathbb{Z})$ , with $p>1$ $\beta>0$. The uniqueness distribution on whose Fourier coefficients are in $\ell^q\_{-\beta}(\mathbb{Z})$ is spaces, where $q$ conjugate $p$. Our characterizations given terms ...

ABSTRACT Background: were made each week during year 2002 from samples of atmospheric aerosols filtered from theair at Tehran Nuclear Research Center.Measurement of gross beta activities and cosmogenic Beryllium-7 concentrationsMaterials and Methodssampler at the Nuclear Research Center meteorological station in Tehran (40contents of samples were determined with semiconductor gamma spectrometry...