Thin, viscous fluid threads falling onto a moving belt behave in a way reminiscent of a sewing machine, generating a rich variety of periodic stitchlike patterns including meanders, W patterns, alternating loops, and translated coiling. These patterns form to accommodate the difference between the belt speed and the terminal velocity at which the falling thread strikes the belt. Using direct nu...

BACKGROUND Older adults could not safely step over an obstacle unless they correctly estimated their physical ability to be capable of a successful step over action. Thus, incorrect estimation (overestimation) of ability to step over an obstacle could result in severe accident such as falls in older adults. We investigated whether older adults tended to overestimate step-over ability compared w...

1 Universidade Estadual de Montes Claros, Faculdade de Medicina, Departamento de Saúde Coletiva. Montes Claros, Minas Gerais, Brasil. 2 Universidade Estadual de Montes Claros, Faculdade de Medicina, Departamento de Clínica Médica. Montes Claros, Minas Gerais, Brasil. 3 Universidade Estadual de Montes Claros, Faculdade de Medicina, Curso de Medicina. Montes Claros, Minas Gerais, Brasil. 4 Univer...

I. Introduction The Immigration Reform and Control Act (IRCA) was enacted in 1986 in an effort to reduce illegal migration by fining those employers who hire unauthorized workers. At the same time, in order to recognize the commitment that many unauthorized workers had already made to the U.S. labor market, the General Legalization Program granted amnesty to approximately 1.7 million people who...

This paper presents results of over 34,000 survey responses to air quality and thermal comfort questions in 215 buildings in US, Canada, and Finland. Results show that 80% or more of the occupants expressed satisfaction with their thermal comfort in only 11% of the buildings surveyed. Air quality scores were somewhat higher, with 26% of buildings having 80% or occupant satisfaction. With respec...

Balance recovery from an unpredictable postural perturbation can be a challenging task for many older people and poor recovery could contribute to their risk of falls. This study examined associations between responses to unpredictable perturbations and fall risk in older people. 242 older adults (80.0 ± 4.4 years) underwent assessments of stepping responses to multi-directional force-controlle...

— Poverty is inherently dynamic: large numbers of people are escaping from poverty at any given time, but large numbers are also falling into poverty simultaneously. Achieving faster poverty reduction requires speeding up the pace of escapes while concurrently slowing down the rate of descents into poverty. Studies undertaken over the past five years in India, Kenya, Peru, and Uganda, consideri...