Nominal and structural subtyping each have their own strengths and weaknesses. Nominal subtyping allows programmers to explicitly express design intent, and, when types are associated with run time tags, enables run-time type tests and external method dispatch. On the other hand, structural subtyping is flexible and compositional, allowing unanticipated reuse. To date, nearly all object-oriente...

abstract   background: evaluate the adherence to facility management and safety standards among governmental and non-governmental hospitals in shiraz, iran.   methods: in this cross sectional study, 22 hospitals of the 33 hospitals in shiraz, iran including 13 governmental and 9 non-governmental facilities were surveyed. a 74-item self-administered questionnaire was used. collected data were en...

High reliability and operational safety are most important requirements of aerospace products. Structural Safety (Reliability) assessment techniques help to achieve safe designs and also identify effect of uncertainty occur in structural systems of aerospace products. In general the structural safety is evaluated using various statistical methods like Mean Value and Moment Methods. Currently se...

A series of tests have been conducted to investigate fatigue damage characterization in corroded welded steel plates using structural health monitoring (SHM) techniques. Acoustic Emission (AE) is a non-destructive testing (NDT) technique with potential applications for locating and monitoring fatigue cracks in service. In the present work, AE is implemented to characterize damage during crack e...

estimating similarity is expressed in many domains and sciences. for instance, data mining, web mining, clustering, search engines, ontology mapping and social networks require the definition and deployment of similarity. user similarity in social networks is one of the main problems and has many applications in this area. in this paper, a new method is introduced for combining structural and n...