BACKGROUND The purpose of this study is to compare air transportation of critically ill pediatric patients with a mixed air-ground transportation system by evaluating timeliness, safety, and cost. The setting was a tertiary care "hub" center with three outlying-referral "spoke" facilities. STUDY DESIGN Our study included 96 children transported between June and December 1997, with 45% constit...

We show that transportation cost inequalities can be used to derive bounds for isotropic constants of convex bodies. We state a conjecture about transportation costs (and discuss support for it) which would have strong consequences for the slicing problem.

A different intermodal transportation model based on cost analysis considering technical, economical, and operational parameters is presented. The model consists of such intermodal modes as sea-road, sea-railway, road-railway, and multimode of sea-road-railway. A case study of cargo transportation has been carried out by using the suggested model. Then, the single road transportation mode has b...

This study assessed the effect of rural-urban transportation on agricultural produce in Ankpa Local Government Area of Kogi State, Nigeria. Primary data obtained from 90 rural farming households were analysed using frequency count, Ordinary Least Square (OLS) regression analysis and mean score from a 3 point Likert type of scale. Results of the study revealed that majority of the farmers were m...

Many cities around the world encourage transition to battery-powered vehicles minimize carbon footprint of transportation sector. Deploying large-scale wireless charging infrastructures charge electric transit buses when loading and unloading passengers have become an effective way reduce emissions. The standard plug-in a limited amount power stored in battery, resulting frequent stops refill e...