over the past decades a number of approaches have been applied for forecasting mortality. in 1992, a new method for long-run forecast of the level and age pattern of mortality was published by lee and carter. this method was welcomed by many authors so it was extended through a wider class of generalized, parametric and nonlinear model. this model represents one of the most influential recent d...

Background and aims: The risk of musculoskeletal disorders is high among computer users compared to other occupations. Prevalence of symptoms of musculoskeletal in computer users is 50 percent. This study aimed to determine the prevalence of symptoms of musculoskeletal disorders and predictors of proper posture based on stages of change model among computer users in Tehran University of Medical...

Purpose: This Study aims at the Investigation of the Relationship between Library Anxiety and Computer Attitude (CAS Model) Of Dezful Public Libraries’ Users. Methodology: This research has been done using analytical survey method. Research sample was 370 users that selected randomly from all 10757 users of public libraries of Dezful. Number of sample size calculated using Morgan table. We u...

Background and Aims: Since a large marginal opening allows more plaque accumulation, gingival sulcular fluid flow and bone loss, microleakage, recurrent caries and periodontal disease, marginal fit is of great importance in fixed restorations. The aim of this study was to compare the marginal fit of zirconium-based all ceramic (Cercon) frameworks, made by two different approaches (Direct and Wa...