In this study, we compare self-perceived unmet need across Canadian provinces and assess how the reasons for unmet need - problems with availability, accessibility and acceptability - vary. This cross-sectional study uses data from the Canadian Community Health Survey (2.1) conducted in 2003. Overall, 11.7% perceived having had unmet healthcare needs in the previous 12 months. The adjusted prov...

This paper presents the main results of a research on the risks incurred by the Metropolitan District of Quito considering the people’s mobility and areas accessibility issues. This analysis relies on a methodology implemented within the framework of a programme called “Information System and risks within the Metropolitan District of Quito” carried out by the French Development Research Institu...

We examine the link between highways and urban development by employing both hedonic analysis and multiple sales techniques to study the impact of the construction of toll roads in Orange County, California, on house prices. Urban economic theory predicts that if highways improve accessibility, that accessibility premium will be reflected in higher land prices. Our empirical analyses of house s...

A major problem addressed in railway network planning relates to distinguishing the role of the railway line in the network, and making a reasonable classification of the lines based on their role. Accessibility has been widely used to measure the role of transportation infrastructure in various studies, but few quantitative models for the classification of the role have been presented yet. In ...

Time geography approach provides quantifiable measures in the form of Time-space prisms which are used for analyzing individual activity spaces resulting from household activity-travel decisions. In the recent concerns to improve accessibility of rural households in developing countries, the need to develop a framework to study economics of household decision-making in the light of their timesp...

This paper considers the engineer’s, economist’s, manager’s, and planner’s perspectives on transportation efficiency respectively. This paper examines the measures used in each perspective and weighs their advantages and disadvantages for various purposes. It illustrates each measure with an example drawn from the case of the Twin Cities ramp metering shut off. The first section summarizes vari...

Heavy and extra heavy crude oils are forming tremendous part of world crudes (about 40%). There are some problems limiting accessibility as a galore hydrocarbon source. One of limiting process is transportation which consumes very huge amount of energy due to their high viscosity. So, if there were a simple, stable, practicable in each situation and environmental friendly solution, these hydroc...