Many natural and man-made lineaments form networks that can be analysed through entropy and energy considerations. Here we report the results of a detailed study of the variations in trends and lengths of 1554 named streets and 6004 street segments, forming a part of the evolving street network of the city of Dundee in East Scotland. Based on changes in the scaling exponents (ranging from 0.24 ...

One hundred and fifty-six homeless adolescents and 319 homeless adults interviewed directly on the streets and in shelters were compared for backgrounds of abuse, adaptations to life on the streets, and rates of criminal victimization when on the streets. Homeless adolescents were more likely to be from abusive family backgrounds, more likely to rely on deviant survival strategies, and more lik...

STUDY OBJECTIVE To examine how child pedestrian exposure to risk, as measured by the mean number of streets crossed, varies according to indices of material disadvantage and ethnic group. DESIGN A questionnaire on pedestrian exposure to risk was distributed to children for completion by parents and return to school. Children from 40 schools were selected using a probability cluster design. ...

The study of patterns urban mobility is utter importance for city growth projection and development planning. In this paper, we analyze the topological aspects street network coastal Cartagena de Indias employing graph theory spatial syntax tools. We find that resulting can be understood on basis 400 years city’s history its peripheral location strongly influenced shaped city, statistical prope...

Networked Infrastructure systems deliver services and/or products from point to point along the network. Demand for the services provided by such systems is typically cyclic, creating inefficiencies in capacity utilization. Congestion pricing provides incentives to shift demand from peak time periods to lower demand periods. This effectively increases the capacity of the system without the need...

Urban residents share access to a number of local resources in which they have a common stake. These resources range from local streets and parks to public spaces, to a variety of shared neighborhood amenities. Collectively shared urban resources suffer from the same rivalry and free-riding problems that Garrett Hardin described in his Tragedy of the Commons tale. Scholars have not yet worked u...

In recent years, the assessment of environmental performance has been received considerable attention by environmental policy indicators and decision makers. In this regard, this paper applies data envelopment analysis (DEA) as a management tool for evaluating the environmental performance of the firms and uses the extended bounded adjusted measure (extended BAM) for including undesirable outpu...

Mean streets represent those connected subsets of a spatial network whose attribute values are significantly higher than expected. Discovering and quantifyingmean streets is an important problem with many applications such as detecting high-crime-density streets and high crash roads (or areas) for public safety, detecting urban cancer disease clusters for public health, detecting human activity...

We explore geometry of London’s streets using computational mode of an excitable chemical system, Belousov-Zhabotinsky (BZ) medium. We virtually fill in the streets with a BZ medium and study propagation of excitation waves for a range of excitability parameters, gradual transition from excitable to subexcitable to non-excitable. We demonstrate a pruning strategy adopted by the medium with decr...