water quality is a serious issue in tropical grasslands that must be addressed to ensure the continuity and sustainability of water resources. this study aimed to assess the stream water quality of tropical grassland under long-term moderate (2.7 animal unit ha-1 y-1 for 34 years) and short-term heavy (5 animal unit ha-1 y-1 for 2 years) grazing systems at catchment and farm scales in kuala lum...

background and objective : restless legs syndrome (rls) is a sleep disorder with an association to sleep quality. we investigated the sleep quality in patients with rls among health-care workers with or without shift work. materials and methods : all female health-care workers (n = 540) in four educational hospitals were enrolled in this cross-sectional study. international rls study group (irl...

background: this study aimed to investigate the relationship between health related quality of life (hrqol), motor ability and weight status in children. methods: two hundred forty children ages 9-11 yr who were selected via multi stage cluster sampling design from primary schools in the shahre qods at tehran, iran in 2007. hrqol was assessed by the pediatric quality of life inventory (pedsql)....

background pittsburgh sleep quality index (psqi) is one of the most important instruments frequently used to assess sleep quality. this questionnaire is used to assess sleep styles and quality in adults through seven dimensions. objectives the study aims to investigate the reliability, validity and factor structure of the persian version of psqi. materials and methods a survey method with quant...

Controversy exists as to whether self-reported sleep quality declines with age, despite changes in sleep being accepted as part of normal aging. This study sought to investigate age-related differences in self-reported sleep quality, after controlling for conditions that are common with age, such as psychological symptoms and increased risk of sleep-disordered breathing (SDB). The Pittsburgh Sl...

We present details of the analysis of the nonlinear quality of life index for 171 countries. This index is based on four indicators: GDP per capita by Purchasing Power Parities, Life expectancy at birth, Infant mortality rate, and Tuberculosis incidence. We analyze the structure of the data in order to find the optimal and independent on expert’s opinion way to map several numerical indicators ...

Let G be a multidigraph with vertices V (G) and arcs A(G). G is balanced if d+G(v) = d − G(v) for every v ∈ V (G). Let ri, rj be the number of cycles in G that include ai, aj ∈ A(G) respectively, and ri ≥ rj. Local quality index of G is defined as the largest ratio ri rj for opposite arcs ai, aj . Global quality index of G is defined as the largest ratio ri rj for distinct arcs ai, aj . In this...

objective: to evaluate and describe the sleep quality in seven subscales among the patients with mild traumatic brain injury (tbi) and compare it with normal patterns. methods: this cross-sectional study was conducted within a 6-month period from february to august 2014 in shahid rajaei trauma center of shiraz. participants were selected randomly from all adult (18-60 years of age) patients adm...