The rapid decline in young children's active commutes to and from school has prompted investigations into ways to raise activity levels. The period after school is recognized as very important in the daily activity regime of primary school children. In this study, we examine the relative effects of local environmental factors and socio-economic status on children's after-school commute mode cho...

Congenital fistulae between the tracheobronchial tree and oesophagus usually originate from the lower end of the trachea or right main bronchus. The case history is presented of a man in whom a fistula between the oesophagus and left main bronchus was not diagnosed until the age of 48.

children and adolescents are vulnerable to violent situations in their social, family and school environment. the aim of the study was to characterize morbidity due to violence in brazilian children and adolescents.a cross-sectional study through the analysis of 1,356 corpus delicti medical reports and police reports of children and adolescents aged 0-19 years, victims of interpersonal violence...

Knowledge of spatial and temporal trends in the environmental exposure to radiofrequency electromagnetic fields (RF-EMF) is a key prerequisite for RF-EMF risk assessment studies attempting to establish a link between RF-EMF and potential effects on human health as well as on fauna and flora. In this paper, we determined the validity of RF exposure modelling based on inner-area kriging interpola...

This paper presents an accuracy assessment of Mobile Laser Scanning (MLS) point clouds and the initial results of practical experiments carried out for a custom-built mobile system. To minimise the difficulties of identification and precise measurement of control points, an approach based on line segments is proposed. The main aim of this technique is to compare a series of 3D line segments ext...

Mean streets represent those connected subsets of a spatial network whose attribute values are significantly higher than expected. Discovering and quantifyingmean streets is an important problem with many applications such as detecting high-crime-density streets and high crash roads (or areas) for public safety, detecting urban cancer disease clusters for public health, detecting human activity...

Abstract In urban renewal processes, metro line systems are widely used to accommodate the massive traffic needs and stimulate redevelopment of local area. The route choice pedestrians, emanating from or going stations, is influenced by street-scale built environment. Many processes involve improvement street-level environment thus influence pedestrian flows. To assess effects design on flows, ...

BACKGROUND This study examined the impact of transportation infrastructure at intersection and non-intersection locations on bicycling injury risk. METHODS In Vancouver and Toronto, we studied adult cyclists who were injured and treated at a hospital emergency department. A case-crossover design compared the infrastructure of injury and control sites within each injured bicyclist's route. Int...

The effect of soil contamination by polycyclic aromatic hydrocarbons (PAH) and heavy metals on earthworms and enchytraeids was studied in urban parks, in Brno, Czech Republic. In spring and autumn 2007, annelids were collected and soil samples taken in lawns along transects, at three different distances (1, 5 and 30 m) from streets with heavy traffi c. In both seasons, two parks with two transe...