background : sensory impairment is a common condition that exerts negative effects on health-related quality of life (hrqol) in the elderly. this study aimed to determine the relationship between sensory impairment and hrqol and identify sensory-specific differences in the hrqol of elderly. methods : this study used data from the korean national health and nutrition examination survey v (2010-2...

The improvement in AOR method for solving this system has been carried out by Hadjimos [1], Recently, Yao-Tang et al. [2], improved AOR method which has been developed by [1]. In this work, we construct a preconditioner to improve the Accelerated Over-relaxation (AOR) iterative method for solution of linear systems. We reduce the spectral radius of iterative matrix by multiplication of Precondi...

We consider a class of matrices that are of interest to numerical applications and are large, sparse, but not symmetric or diagonally dominant. We give a criterion for the existence of (and we actually construct) the inverse matrix in terms of powers of a "small" matrix. We use this criterion to find that the spectral radius of the Jacobi iteration matrix, corresponding to a block tridiagonal p...

We present a UML profile for an agent-oriented modeling approach called Agent-Object-Relationship (AOR) modeling, where an entity is either an agent, an event, an action, a claim, a commitment, or an ordinary object, and where special relationships between agents and events, actions, claims and commitments supplement the fundamental association, aggregation/composition and generalization relati...

A sample of seventy specimens of a freshwater catfish, Sperata sarwari was collected from Mangla Lake during February to November 2005 and their guts preserved in 5 % formalin. After the catch, sample was divided into two sub-samples as size class I (31-60 cm) and size class II (61-90 cm). The gut of each fish specimen was examined for the presence of internal helminth parasites. The study reve...

ABSTRACT Objectives: to analyze the factors associated with use of alcohol, tobacco and illicit drugs among Brazilian undergraduate students. Methods: observational, cross-sectional study, convenience sampling, conducted in 2014/2015, involving institutional data a self-completed online questionnaire, analyzed using measures frequency, central tendency/dispersion logistic regression. Results: 1...

OBJECTIVES To estimate the prevalence of youth who use cannabis but have never been tobacco smokers and to assess the characteristics that differentiate them from those using both substances or neither substance. DESIGN School survey. SETTING Postmandatory schools. PARTICIPANTS A total of 5263 students (2439 females) aged 16 to 20 years divided into cannabis-only smokers (n = 455), cannab...