This paper estimates a theory-guided gravity equation of regional patient flows. In our model, patient’s choice to consult physician in particular region depends on measure spatial accessibility that accounts for the exact locations both patients and physicians. Introducing this concept economics we derive an augmented gravity-type show performs better explaining flows than bilateral distance. ...

A transport system can be defined as a complex characterized by random value of demand, variable weather and climatic factors, set characteristics infrastructure, interconnections. One the key modes providing freight both in domestic international traffic is road. Its mobility ability to deliver cargo from door unique competitive advantage over other transport. To create an effective logistics ...

In studies devoted to the problem of tourism development in host regions (destinations), economic component is always taken into account, sometimes environmental component, and almost never sociocultural account. However, today organizing investment business, taking account cultural impact, becoming more urgent. It causes a great practical need for conducting research on process business theore...

there is a need to analyze and map rainfall erosivity to assess soil erosion at the regional scale. the objectives of this study were to develop a regional model to estimate seasonal erosivity from seasonal rainfall data and to study temporal and spatial distribution of rainfall erosivity for the gorganrood drainage basin in the northeast of iran. six gauging stations with a high temporal resol...