The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The explosion of web-based GIS technologies and the opening up of mapping services to citizens in the past decade have resulted in a whole range of Volunteered Geographic Information (VGI) communities like OpenStreetMap, Ushahidi, and Wikimapia, which are used to assist emergency management operations on a large scale. However, many crowdsourcing systems for disaster recovery have multiple obstacles...
Research shows that public events can be violence attractors or generators. Recent studies focus on the effect of crowd events on spatial crime analysis, using environmental criminology theories as a background. Also, social media analyses show possible influences of social media in crowd movements. This study displays and correlates spatial patterns of crimes and tweets around two stadiums in Manchester,...
Detecting outliers in massive trajectory data is helpful to discover anomalous events and understand human mobility. Traditional trajectory outlier detection methods are inadequate in dealing with massive data. Researchers have studied several ways to introduce distributed solutions to outlier detecting, trying to enhance massive data process efficiency. But most of these methods employ MapReduce...
Flow path plays an important role in hydrological analysis modeling, especially in the dynamic simulation of surface flow discharge. The existing flow-path network model (FPN) can extract the flow path from random flow source point to the basin outlet and simplify the three-dimensional terrain surface to the one-dimensional representation. However, with the increasing of the number of flow source...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.