BACKGROUND Injury risk from car-bicycle collisions is particularly high among youth with attention-deficit hyperactivity disorder (ADHD). Here, we capitalized on advances in virtual environment technology to safely and systematically examine road-crossing behavior among child cyclists with and without ADHD. METHODS Sixty-three youth (26 with ADHD, 37 non-ADHD controls) ages 10-14 years crosse...

The SPARC project has entered its installation phase at the Frascati National Laboratories of INFN: its main goal, the promotion of an R&D activity oriented to the development of a high brightness photoinjector to drive SASE-FEL experiments, is being vigorously pursued by a collaboration among ENEA-INFN-CNR-Universita` di Roma Tor Vergata-INFM-ST. In this paper we will report on the installatio...

Aiming at the problem of large-scale deformation track and alleys in East Second Mining Area, numerical analysis method is used to analyze stress law roadway. The results show that critical depth roadway 800m, shear deep about 8.7MPa left right shoulders, vertical increases sharply range 0~5.5m from center roadway, 6~ peak value reached within 8m, plastic zone roof 2.6m, zones are 5.2m 5.4m, re...

Design consistency refers to the conformance of a highway's geometry with driver expectancy. Drivers make fewer errors in the vicinity of geometric features that conform with their expectations. Techniques to evaluate the consistency of a design documented within this report include alignment indices, speed distribution measures, and driver workload. Alignment indices are quantitative measures ...

This project explored a new approach in detecting vehicles on a roadway by making a roadway section itself a traffic flow detector. Sections of a given roadway are paved with carbon-nanotube (CNT)/cement composites; the piezoresitive property of carbon nanotubes enables the composite to detect the traffic flow. Meanwhile, CNTs can also work as the reinforcement elements to improve the strength ...

BACKGROUND Living near major roadways has been associated with an increase in respiratory symptoms, but little is known about how this relates to airway inflammation. OBJECTIVE We assessed the effects of living near local residential roadways based on objective indicators of ventilatory function and airway inflammation. METHODS We estimated ambient air pollution, resolved to the level of th...

In this study, two-state Markov switching multinomial logit models are proposed for statistical modeling of accident-injury severities. These models assume Markov switching over time between two unobserved states of roadway safety as a means of accounting for potential unobserved heterogeneity. The states are distinct in the sense that in different states accident-severity outcomes are generate...

Air quality is a serious and worsening problem in the rapidly growing cities of sub-Saharan Africa (SSA). However, the lack of ambient monitoring data, and particularly urban roadside concentrations for particulate matter in SSA cities severely hinders our ability to describe temporal and spatial patterns of concentrations, characterize exposure–response relationships for key health outcomes, e...

In this paper, two-state Markov switching models are proposed to study accident frequencies. These models assume that there are two unobserved states of roadway safety, and that roadway entities (roadway segments) can switch between these states over time. The states are distinct, in the sense that in the different states accident frequencies are generated by separate counting processes (by sep...

The idea of automated installation/un-installation is a direct consequence of the tedious and time consuming manual efforts put into installing or uninstalling multiple software over hundreds of machines. In this work we propose what is to the best of our knowledge the first learnable method of autonomous software installation/un-installation. The method leverages text classification using as d...