This paper presents a procedure for assigning zone data to links in the context of a Geographic Information System (GIS) environment. This may be used for several applications; the one motivating this paper is the need to approximate how much secondary traffic is accessing the main street network from adjacent zones. This will then be used in models to predict the number of accidents on the mai...

Given a road network, a fundamental object of interest is the matrix of origin destination (OD) flows. Estimation of this matrix involves at least three sub-problems: (i) determining a suitable set of traffic analysis zones, (ii) the formulation of an optimisation problem to determine the OD matrix, and (iii) a means of evaluating a candidate estimate of the OD matrix. This paper describes a me...

Industrial air pollution is of major concern to upcoming Indian cities like Trivandrum and Pune in terms of industrialization and urbanization. Even the urban population is exposed to ambient air pollutants; on the other hand the sub-rurals contribute to the cigarette smoke and kitchen cooking fuels. A quantitative analysis on the mean concentration of SO2, NOX, and SPM in four different indust...

This study assessed the clinical utility of contrast sensitivity (CS) relative to attention, executive function, and visuospatial abilities for predicting driving safety in participants with Parkinson's disease (PD). Twenty-five, non-demented PD patients completed measures of contrast sensitivity, visuospatial skills, executive functions, and attention. All PD participants also underwent a form...

This research attempts to build a framework for determination of optimal routes for hazardous material transportation. Previous works have suggested incorporation of many conflicting objectives in the analysis, such as travel cost, population exposure, environmental risk or security concerns. Multiplying the number of objectives leads to complex shortest path problems that often have several ef...

Abstract Roads can have a significant impact on the frequency of mass wasting events in mountainous areas. However, characterizing extent and pervasiveness movements over time has rarely been documented due to limitations available data sources consistently map such events. We monitored evolution road network assessed its effect for 11-year window Arhavi, Turkey. The main construction projects ...

Road networks shape traffic mobility in a city. These dynamics are often represented as traffic flows in and out of defined urban travel zones. The functional dynamics of traffic zones can be represented by time-dependant correlations between time series of traffic flows in and out of these zones. In this paper we address the question: given the dense timevarying functional correlations of traf...

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