This paper describes the development and application of a fully digital, aerial image acquisition system which is integrated with GPS. A high resolution digital camera captures overlapping vertical images from an airplane. The exposure stations are tagged with the GP S time and the accurate position of the airplane. During post-processing images and navigation data are integrated. All informati...

1 Traffic has become a major problem in metropolitan areas around the world. It is of a great 2 importance to understand the complex interplay of road networks and traffic conditions. We 3 propose a novel framework to estimate traffic conditions at metropolitan scale using GPS traces. 4 Our approach begins with a coarse inference of network travel times by solving a convex 5 optimization progra...

Geographic information systems (GIS) are being used with increasing frequency in environmental epidemiology studies. Reported applications include locating the study population by geocoding addresses (assigning mapping coordinates), using proximity analysis of contaminant source as a surrogate for exposure, and integrating environmental monitoring data into the analysis of the health outcomes. ...

Analytical work on rapid data identification based modeling spatial analysis of geographic information systems (GIS) and technologies is required. As a result, with the help GIS technologies, population density in regions; natural growth dynamics; histogram respect to species; dependence location terrain; it possible carry out analytical through describing demographic processes such as employme...

the problems of land degradation and soil loss are among the major problems of watersheds in iran. for erosion andsediment estimation one can use statistical and empirical methods. for doing this, land unit map and the map of effectivefactors should be prepared. for erosion and sediment estimation one can use statistical and empirical methods. however,these empirical methods are usually time co...

ةصلاخلا Allopeas gracilis is recorded for the first time in southern Iraq. It was collected from two localities (Abu-Al Khaseeb region and Hareer region) from Basrah city. ضرلاا عقوقلا نم ةنيع نورشعو نامث ي Allopeas gracilis مت للاخ ةرصبلا ةنيدم ،ريرح ةقطنم و بيصخلا وبا ةقطنم نم اھعمج ناسين رھش 2008 راذاو 2008 يلاوتلا ىلع . ليجستلا اذھ ربتعي دعب ةرصبلا ةنيدم نم ةيضرلاا عقاوقلا نم ثلاثلا Monacha...

Travel recommendation and travel diary generation applications can benefit significantly from methods that infer the durations and locations of visits from travelers’ GPS data. However, conventional inference methods, which cluster GPS points on the basis of their spatial distance, are not suited to inferring visit durations. This paper presents a pace-based clustering method to infer visit loc...

Pedestrian navigation services guide people to reach their destinations as the vehicle navigation services do. However, the moving way of people differs from that of vehicles, and hence the assumptions for car-navigation services are not suitable for pedestrian navigation. People may walk through the place without GPS signals due to the shelter in the sky. In some space, the accuracy of GPS may...

This paper presents our efforts in the updating of the Storm Water (SW) Database using Global Positioning System (GPS), direct survey and measurements of the Storm Water structures (or called Manhole) in GIS database management. The main task assignments include (1) Designing a data structure, which becomes an effective geodatabase structure to represent the storm water structures and the corre...

BACKGROUND Active travel is a possible method to increase physical activity in children, but the precise contribution of walking to school to daily physical activity is unclear. PURPOSE To combine accelerometer and GPS data to quantify moderate-to-vigorous physical activity (MVPA) on the walk to and from school in relation to overall daily levels. METHODS Participants were 141 children aged...