Seabirds fly considerable distances during the breeding season in search for food for themselves and their young. Variation in the distance from the breeding colony to the offshore food resources is expected to impact the energy spent on foraging trips. In 2005-06 and 2006-07 we studied foraging behaviour, derived time budgets during foraging trips (commuting, hunting or drifting on the sea sur...

The estimation of commuting flows at different spatial scales is a fundamental problem for different areas of study. Many current methods rely on parameters requiring calibration from empirical trip volumes. Their values are often not generalizable to cases without calibration data. To solve this problem we develop a statistical expression to calculate commuting trips with a quantitative functi...

This article presents a methodology to estimate the maximum potential impact of well-built and conserved cycling infrastructure, measured as modal share for accessibility trips, well associated transport energy that can be saved in those trips. The uses Geographic Information Systems (GIS) active trip probabilities, from which output variables obtained. It was applied case study mid-sized city ...

Travel demand is derived from activities that people have to or want to engage in. Work trips have been a primary concern for transportation researchers and an early focus of transportation modeling was on commuting behavior (Ben-Akiva and Lerman 1974; Train 1980). Subsequently, non-work activities, such as shopping or doctor visits, increasingly caught the attention of transportation analysts,...

This article describes a framework that capitalizes on the large-scale opportunistic mobile sensing approach for tourist behavior analysis. The article describes the use of massive mobile phone GPS location records to study tourist travel behavior, in particular, number of trips made, time spent at destinations, and mode of transportation used. Moreover, this study examined the relationship bet...

This study examines the pricing strategy of a parking sharing platform that rents daytime-usage rights private spaces from owners and sells them to users. In an urban area with both shared curbside parking, choice equilibrium model is proposed predict number users under any given platform. We analytically analyze how (price charged on rent paid or sharers) would affect several system efficiency...

The monocentric city ultimately becomes inefficient as urban growth continues because of increasing congestion close to the CBD. Although the exhaustion of CBD agglomeration economies is another major reason for the breakdown of monocentricity, these congestion costs are sufficient grounds alone for the emergence of the policentric metropolitan region. Theoretical models of the policentric city...