To determine the relative position of any two surfaces in a system, one approach is to use operations (Minkowski sum and intersection) on sets of constraints. These constraints are made compliant with half-spaces of n  where each set of half-spaces defines an operand polyhedron. These operands are generally unbounded due to the inclusion of degrees of invariance for surfaces and degrees of fre...

background: a dramatic increase in healthcare expenditures is a major health policy concern worldwide. understanding factors that underlie the growth in healthcare expenditures is essential to assist decision-makers in finding best policies to manage healthcare costs. we aimed to examine the determinants of healthcare spending in iran over the periods of 1978-2011. methods: a time series analys...

Related Articles The electronic structure origin for ultrahigh glass-forming ability of the FeCoCrMoCBY alloy system J. Appl. Phys. 110, 033720 (2011) Enhancement of glass-forming ability and corrosion resistance of Zr-based Zr-Ni-Al bulk metallic glasses with minor addition of Nb J. Appl. Phys. 110, 023513 (2011) Structural origin underlying poor glass forming ability of Al metallic glass J. A...

Five taxa viz, Agaricus altipes, A. cupreobrunneus, A. placomyces, A. porphyrocephalus, and A. urinascens var. urinascens are reported as new records for Iran. Details of taxonomical important features are also presented herewith. New localities in the west and north-west of the country are reported as habitats of Agaricus speciesin Iran.  

with regard to bycatch problem, this is the first study of the shrimp trawl bycatch in different depth variation in hormuzgan coastal waters. samples were collected during shrimp season in october 2011 and november 2012. the study area was divided into two regions: hormuz-keshtisoukhte (56°, 27ʹ e/27°, 07ʹ n) to (56°, 18ʹ e/27°, 06ʹ n) and keshtisoukhte-toola (56°, 18ʹ e/27°, 06ʹ n) to (55°, 58...

the current study aims to identify the effective factors and barriers to loyalty in electronic banking services in the private banks customers. for this purpose, a survey was done with a questionnaire sampling from 420 customers of private banks in golestan province, who have used electronic banking services in 2011. the results indicated that seven factors including preference, customer satisf...

urbanization and population growth along with an increase in the environmental pollution resulting from human activities which have dramatically changed the green space and land cover have been key factors in the sustainable development of land and the management of land use. to collect reliable data required for providing land cover maps as well as for investigating the environment, remote sen...