Data envelopment analysis (DEA) is one of non-parametric methods for evaluating efficiency of each unit. Limited resources in healthcare economy is the main reason in measuring efficiency of hospitals. In this study, a bootstrap interval data envelopment analysis (BIRDEA) is proposed for measuring the efficiency of hospitals affiliated with the Hamedan University of Medical Sciences. The propos...

In portfolio selection models, uncertainty plays an important role. The parameter’s uncertainty leads to getting away from optimal solution so it is needed to consider that in models. In this paper we presented a two-stage robust model that in first stage determines the desired percentage of investment in each industrial group by using return and risk measures from different industries. One rea...

Reliable estimates of runoff are required as a part of the information sets that help watershed managers make informed decisions on water resources planning and management. This study was carried out in Shafaroud watershed located in the north of Iran. In order to achieve the best runoff simulation in the study area, first rainfall data of four stations during 1998 to 2011 were collected and co...

Objectives Generalized Anxiety Disorder (GAD) is a highly prevalent distressing condition for individuals in both community and healthcare staff. In this regard, lack of effective psychological and medical treatments can impose a high cost on the family and society. Methods A total of 22 female patients with GAD after primary clinical evaluation and qualifying conditions were selected and divi...

making capital and investment is the main driving forces of economic development. based on the investment sensitivity to the changes of some of macro-economic variables and risk and uncertainty, the present study evaluated the effective factors on investment in private sector in iran during 1980-2007. at first, the uncertainty variables of real informal exchange rate, nominal interest rate and ...

We derive a thermodynamic uncertainty relation (TUR) for first-passage times (FPTs) on continuous time Markov chains. The TUR utilizes the entropy production coming from bidirectional transitions, and net flux unidirectional to provide lower bound FPT fluctuations. As every transition can also be seen as pair of separate ones, our approach typically yields an ensemble TURs. tightest fluctuation...

The importance of graph search algorithm choice to the directed relation graph with error propagation (DRGEP) method is studied by comparing basic and modified depth-first search, basic and R-value-based breadth-first search (RBFS), and Dijkstra’s algorithm. By using each algorithm with DRGEP to produce skeletal mechanisms from a detailed mechanism for nheptane with randomly-shuffled species or...

The kinetic uncertainty relation (KUR) is a trade-off between the precision of an observable and mean dynamical activity in fixed time interval for time-homogeneous continuous-time Markov chain. In this Letter, we derive KUR on first passage time-integrated current from information inequality at stopping times. shows that bounded above by number jumps up to time. We apply our result simple syst...