Sleep problems are often under-diagnosed, but may have a profound impact on work performance. The purpose of this study was to validate the Dutch version of the Occupational Impact of Sleep Questionnaire (OISQ). A total of 555 adults with a regular daytime job completed the OISQ. In addition, they also completed the Pittsburgh Sleep Quality Index (PSQI), Epworth Sleepiness Scale (ESS) and the S...

ABSTRACT Objective: to assess sleep quality in menopausal women and its association with symptoms related this period. Method: is a cross-sectional, analytical correlational study. Sleep was assessed using the Pittsburgh Quality Index; climacteric symptoms, according Menopause Rating Scale. To compare total score each Scale domain PSQI classification, Mann-Whitney U non-parametric test used. P&...

To investigate the influence of different intensities and durations of exercise before bedtime on the sleep pattern and core body temperature of individuals considered good sleepers, we selected 17 healthy males and all underwent 5 nonconsecutive days of study. Measurements of polysomnographic parameters and core body temperature were taken at baseline and after each experimental protocol, perf...

OBJECTIVE To examine the association between total sleep duration and the prevalence of metabolic syndrome (MetSyn) in older Chinese. RESEARCH DESIGN AND METHODS Cross-sectional analysis of baseline data from the Guangzhou Biobank Cohort Study (GBCS) was performed. Participants (n = 29,333) were aged ≥50 years. Risk of MetSyn and its components were identified for self-reported total sleep du...

68 October 2007 EngineerIT This article aims to automate such intuitive human skills for future sleeper inspections. Pattern recognition has been proposed for classification and results from sensors based on the abovementioned methods were fused to generate a single output condition. Final results achieved in this work indicate an overall classification rate of around 88% compared to the human ...

The proper fabrication of concrete-embedded tracks is a prerequisite for their long-term durability and their economic efficiency. Frequent defects which are caused either during fabrication or during operation are (partially) debonding between the pre-fabricated sleepers and the site-mixed concrete. This paper deals with the Pulse-ESPI-Technique as a measuring method which enables to detect th...

The dynamic response of a railway track has been investigated by analytical or numerical models. When rail supports (sleepers) foundation contain defects, the damage reduces stiffness and becomes non-uniform. This paper presents new model to calculate responses on non-uniform foundation. In this model, is considered as an infinite beam resting equidistant subjected moving forces. sleepers are s...

Nowadays, railway transport plays a very important role in the system period of positive growth commerce, economy and industry. In accordance with other modes transport, is most stable mode for transporting, safety, capability carrying, social economic benefits. Sleepers have major roles complex distributed load from rails when train goes through to ballast. This study discussed pre-stressed co...

The train is a mode of mass transportation that fast, efficient, and relatively affordable. To support the high demand for this transportation, adequate infrastructure also needed. condition must always be monitored so level security safety rail modes can in optimal conditions. One important component requires regular attention maintenance railway sleepers. In paper, finite element (FE) model w...