AIM The present study examined the association between vision, fear of falling and fear-related activity restriction, and assessed the effect of vision on the relationship between fear of falling and mobility, using data from a nationally representative sample of community-dwelling adults aged ≥ 50 years. METHODS Participants (n=5003) completed an interview and health assessment (including Ti...

Researchers have reported that network characteristics are associated with substance use behavior. Considering that social interactions within online networks are increasingly common, we examined the relationship between online network characteristics and substance use in a sample of emerging adults (ages 18-24) from across the United States (N = 2,153; M = 21 years old; 47% female; 70% White)....

BACKGROUND While age-related increases of between-person variability in a variety of cognitive measures are commonly reported in cross-sectional studies, the nature of short-term intraindividual fluctuation in elderly people's performance is relatively unexplored. OBJECTIVE The goal of the present study is to examine short-term fluctuations in elderly people's sensorimotor functioning and the...

According to recent studies, Ganoderma may be the third genus, after Alternaria and Cladosporium, the spores of which cause symptoms of allergy, and concentration is related to meteorological factors. The aerobiology of Ganoderma spores in Szczecin in urban and suburban districts was examined using Lanzoni Volumetric Spore Traps in 2008-2010. Ganoderma spores were present in the atmosphere on m...

Gas condensate reservoirs are characterized by a distinctive retrograde behavior and potential for condensate drop out during production and sampling. Efficient modeling of gas condensate reservoir requires careful phase behavior studies of samples collected prior to and during the production life of reservoir. In this work, an integrated characterization and tuning algorithm is proposed to ana...

J is used for the development of algorithms for a variety of statistical calculations including means, medians and quartiles, frequency tabulations, variances and covariances, regression analysis, graphical presentation, analysis of variance, random number generation and simulation, nonparametric tests, and probability distributions. Apart from the first two sections the organization of the pap...

In this paper, we show a general way to interpret the infrastructure of a global field of arbitrary unit rank. This interpretation generalizes the prior concepts of the giant-step operation and f -representations, and makes it possible to relate the infrastructure to the (Arakelov) divisor class group of the global field. In the case of global function fields, we present results that establish ...

We compare the performance of eight controllers for quadruped robot trot gaits. The controller variations couple the robot’s actuators using a different symmetry each, to reduce the effective number of parameters required to control the trot gait. We compare the performance of all controllers on a learning task where robots learn to walk fast without falling, in a physically realistic simulatio...

Purpose: To investigate the factors affecting communicational skills of regimental commanders toward conscripts at an army introductory military training center in Tehran. Materials and Methods: The participants were 82 regimental commanders of the regiments and battalions of an introductory military training center. A 21-item questionnaire was used to collect the required data. Descriptive...