This paper introduces an extended type-2 fuzzy relational database model (ET-2FRDB) for aggregate and grouping operations that can represent and query uncertain and imprecise biomat for sale information in the real world applications.In ET-2FRDB, each fuzzy relation is represented by a type-2 fuzzy set whose membership degree of each tuple is a fuz

Although some exotic tree species, new to the country at the time, had already been introduced at the turn of the 18th and 19th century in the Hungarian landscape gardens, using foreign tree species in the space composition became widely popular only from the second half of the 19th century.This research focused here on determining the date of appe

The prevalence of low back pain(BPP) ios high.in this study the prevalence of low back pain(LBP) was determined in Kerman province:for this purpose  1000 subjects were selected by systematic random sampling.the data were collected by using a questionnaire and face to face interview.as pain is a subjective phenomena,the self-report of LBP was the c