Abstract With the so-called ‘long summer of migration’ 2015, there was an urgent need to accommodate many refugees in Germany. This situation framed as a ‘refugee reception crisis’, and it revealed diametrically opposed stances within German society. Within this debate, anti-refugee sentiment is often explained with placement nearby refugee facilities. Conclusive evidence claim yet missing. Mos...

abstract background and purpose:the rapid urbanization and industrialization in many parts of the world have led to the accumulation of heavy metals in the terrestrial environment and pose a serious threat to human health. in this study, a broad assessment was conducted to estimate the levels of heavy metals in groundwater in sistan and baluchestan via geographic information system (gis), iran,...

A practical hierarchical component-based WebGIS model referred to as Geo-Union is presented. Geo-Union consists of four layers: storage layer, service layer, component layer and application layer. Service layer is partitioned into another two layers: Geo-Union client and Geo-Union server. The architectures and object diagram of each layer in Geo-Union are discussed in details. After that, four ...

An argumentation map is an online discussion forum for spatially related topics that combines the forum with an interactive map. The utility of an argumentation mapping tool highly depends on the accuracy and quantity of the geo-tags that link the discussion contributions to geographic locations. These geo-tags can be created manually by the users of the argumentation map or automatically by a ...

Geo-social networks offer opportunities for the marketing and promotion of geo-located services. In this setting, we explore a new problem, called Maximizing Influence Bichromatic Reverse k Nearest Neighbors (MaxInfBRkNN). The objective is to find set points interest (POIs), which are geo-textually socially relevant social influencers who expected largely promote POIs online. other words, probl...