background: a number of former studies have shown that tuberculosis (tb) is higher in diabetes mellitus (dm) patients than non-diabetics. both dm and tb are major public health problems in iran, and because of the lack of investigation in this field in the region, we conducted this study to evaluate the prevalence of dm in admitted pulmonary tuberculosis patients. methods: the medical files of ...

adsorption of co molecule on the vanadium surface has been studied by using of the dft method with lanl2dz,6-31g* and 6-31g** basis sets by gga approximation of theory. using periodic first principles simulations we investigate the interaction of oxygen molecule with regular v (100) surface. the limitation of this approach is the use of thin metallic slabs with a limited range for their coverag...

We develop a general framework of rule based database update on the basis of prioritized logic programs. This approach has advantages in representing and handling information connict in updates. We then focus on the computational aspect of this approach. We show that under our framework, the model checking in an update is co-NP-complete, while the associated inference problem is P 2-complete. F...

Checking copositivity of a matrix is a co-NP-complete problem. This paper studies copositive matrices with certain spectral properties. It shows that an indefinite matrix with exactly one positive eigenvalue is copositive if and only if the matrix is nonnegative. Moreover, it shows that finding out if a matrix with exactly one negative eigenvalue is strictly copositive or not can be formulated ...

â â â  â â â â â  abstract: â  up to now, the impact of real exchange rate on the non-oil exports of iran has been mainly on focus. however, the more important aspect of the fluctuations in exchange rate is its degree of volatility which can have profound effect on the non-oil exports. hence, the main objective of this paper is to investigate the linkage between non-oil exports and the real exc...