This paper presents an assessment method for fast and quantified estimation of the Perceived Quality of Service (PQoS) for homogeneous MPEG-4 video content, enabling optimized utilization of the corresponding storage and bandwidth resources. Besides, the Mean Perceived Quality of Service (MPQoS) as a function of the video encoding rate is introduced and exploited as a metric for objective video...

Background and Purpose: Researchers have mentioned that perceived organizational support for safety may predict occupational accidents and psychological distresses in the workplace. The present study examined the degree of perceived organizational support for safety related to injuries reporting rate and its dimensions among workers’ Isfahan Steel Company. Materials and Method...

The perceived rate of movement of sine wave gratings has been measured over a range of contrasts. At temporal frequencies below about 8 Hz a decrease in contrast reduces apparent velocity. At 16 Hz a reduction in contrast increases perceived velocity.

Introduction: The phenomenon of basic vaccine hesitancy in parents is the biggest challenge faced byhealth workers global era currently. This study aimed to analyze relationship between perceivedbenefits, perceived barriers, and knowledge about vaccines towards among anti provaccinecommunities on social media Facebook.Methods: used a cross-sectional design. sample was 150 members anti-vaccineco...

Key messages • Older people are particularly vulnerable to social isolation or loneliness owing to loss of friends and family, mobility or income. • Social isolation and loneliness impact upon individuals' quality of life and wellbeing, adversely affecting health and increasing their use of health and social care services. • People who use befriending or Community Navigator services reported th...

BACKGROUND People with HIV with access to treatment are growing older and living healthier lives than in the past, and while health improvements and increased survival rates are welcome, the psychological and social consequences and quality of life of ageing are complex for this group. Understanding how ageing, HIV and quality of life intersect is key to developing effective interventions to im...

BACKGROUND Support groups for people living with HIV are integrated into HIV care and treatment programs as a modality for increasing patient literacy and as an intervention to address the psychosocial needs of patients. However, the impact of support groups on key health outcomes has not been fully determined. METHODS We searched electronic databases from January 1995 through May 2014 and re...

Despite a reduction in the workplace injury rate for most industries in Canada, the number of compensation claims for the Canadian Forest Industry is not declining at a comparable rate. While mechanisation, particularly of tree harvesting operations, has improved injury rates in the last 5 to 7 years, the forest industry, along with similar labour-intensive industries such as mining, constructi...