Almost all load bearing components usually experience variable amplitude loading (VAL) rather than constant amplitude loading (CAL) during their service lives. Although many models have been proposed on this subject, but life prediction under these complex situations is still under constant improvement. The present study aims at evaluating residual fatigue life under CAL due to application of t...

La correlación es una medida estadística que permite conocer el grado de asociación lineal entre dos variables cuantitativas u ordinales (X, Y). También determina la fuerza y dirección toma esta relación mediante cálculo del coeficiente correlación, cuyo resultado puede variar en intervalo [-1, +1]. Entre más cercano a 1 sea mayor asociación. Cuando aleatoria o no existe, tiende cero. Los coefi...

OBJECTIVE Eliminating health disparities, including those that are a result of socioeconomic status (SES), is one of the overarching goals of Healthy People 2010. This article reports on the development of a new, adolescent-specific measure of subjective social status (SSS) and on initial exploratory analyses of the relationship of SSS to adolescents' physical and psychological health. METHOD...

The objective of this study is to determine how the age onset acquire a foreign language and motivation both influence in pronunciation French university students. To accomplish work, quantitative research was used methodology descriptive correlative. There are previous studies that sustain students began at an early have acquired better FLE compared those who their learning process later age. ...

One of the factors that cause acute respiratory tract infections in toddlers is a history exclusive breastfeeding. Exclusive breastfeeding Indonesia for last 5 years has not met national target 80% so it can increase risk by 15-23%. Breastfeeding, especially breastfeeding, very beneficial children to prevent infectious diseases because breast milk protective substances or immune substances. The...

The purpose of this research was to study the role of non-governmental organization inpreserving of urban green areas in the city of Tehran. This is a descriptive-correlationresearch method. Population of this study was 120 active members of two non-governmentalorganizations in Tehran. After distributing the questionnaires, 62 questionnaires werereturned. Content and face validity of the instru...

BACKGROUND Despite several polysomnographic studies on periodic leg movements (PLM) in healthy sleep, data on the prevalence and characteristics of periodic arm movements (PAM) in normal subjects are lacking. We aimed to investigate PAM and their association with PLM during wakefulness and sleep in healthy subjects. METHODS Ninety-one participants underwent video-polysomnography according to ...

PURPOSE To evaluate the validity and reliability of the telephone-administered long IPAQ version. METHODS The questionnaire was administered by telephone to adults on days 1 and 6. On day 1, the same questionnaire was administered by face-to-face interview, and accelerometers were delivered to subjects. Reliability was measured by comparing data collected using the telephone questionnaire on ...

background: many in vitro studies suggested that choline incorporation into many types of tumors is related to cell proliferation. whether in vivo choline incorporation is related also to cell proliferation or not was my question. therefore, the aim of this pilot study was to investigate the relationship of in vivo [methyl- 14c]-choline incorporation and in vivo [methyl-3h]- thymidine incorpora...

With computer simulations, we examined the performance of the Spearman-Kärber method for analyzing psychometric functions and compared this method with the standard technique of probit analysis. The Spearman-Kärber method was found to be superior in most cases. It generally yielded less biased and less variable estimates of the location and dispersion of a psychometric function, and it provided...