Spatial distribution rules and risk factors for syphilis were studied in Jiangsu province, People's Republic of China during 2005 and 2009. Trend surface analysis, spatial autocorrelation analysis and spatio-temporal clustering were applied with the incidence rates of the various counties in the province to determine spatial distribution rules and risk factors. Syphilis was found to be most sev...

Railway transportation plays an important role in the economic development of Iran. National Iranian Railways includes fifteen regional railways which operate independently, but under the supervision of National Iranian Railways Company. Evaluating the efficiency of regional railways is an important issue in Iran and is one of the bases for budget and resource allocation for further developmen...

The relationship between spatial patterns of rural settlements and environment and its dynamics were analyzed in Daxing District, Beijing in the recent 20 years were analyzed using landsat TM images. Results showed that too much of land in total was used for the rural settlements in the study area with a rapid growth, and it had a great potential for land intensive utilization; the rural settle...

The recent US Commodity Flow Survey data suggest that transporting hazardous materials (HAZMAT) often involves multiple modes, especially for long-distance transportation. However, not much research has been conducted on HAZMAT location and routing on a multimodal transportation network. Most existing HAZMAT location and routing studies focus exclusively on single mode (either highways or railw...

Moving objects databases has become an intensive field of research in the recent years with many applications ranging from location-based services, traffic monitoring, fleet management, etc. Most of the works in the literature assume free development of the movement in the 2dimensional space. In some cases, the objects move within spatially embedded networks, e.g. vehicles in highways and train...

Moving objects databases have become an intensive field of research in recent years with many applications such as location-based services, traffic monitoring, fleet management, etc. Most of the works in the literature assume free movement in the 2-dimensional space, although in some cases, the objects move within spatially embedded networks, e.g. vehicles in highways and trains in railways. Mo...

Purpose: This study examines the impact of transport infrastructure on Gross Regional Products in Chinese economic regions. Methods: The analyzes according to eight regions China by using descriptive statistics and regression analysis methods. Results: findings are that a) densities railways highways have strong impacts per capita regions, b) differ among c) construction new has a more positive...

Shortest paths are not always simple. In planar networks, they can be very different from those with the smallest number of turns--the simplest paths. The statistical comparison of the lengths of the shortest and simplest paths provides a non trivial and non local information about the spatial organization of these graphs. We define the simplicity index as the average ratio of these lengths and...

A structural failure of a wind turbine might lead to loss of blade (or parts of it) and thus cause a risk to nearby people and property. In the Netherlands, more densely populated areas are considered to achieve the target set by the Dutch government of implementing 1.500 MW wind power onshore. Because of the public opinion locations close to highways, railways, canals or existing industrial zo...