• We explore spatial patterns of restaurants across large UK cities Top-rated tend to be spatially more concentrated around the city center locate close other top Bottom-rated away from each A larger quality difference increases dispersion top-rated To relationship between location and differentiation, we build a dataset over 30,000 rated by TripAdvisor, cities. document several new stylized fa...

Groundwater aquifers are an important source of water supply for agriculture, industry and drinking. The present study investigates the changes in the quality of groundwater using geostatistical methods in the Ravar plain during a 10-year period. In this study, after selecting the appropriate spatial interpolation method to draw water quality parameters such as TDS, SAR and EC, zoning maps of R...

The proliferation of GZS technology has great& increased the access to and the usage of spatial data. Making maps is relatively easy even for those who do not have much cartographic training. Nonetheless, the concerns for spatial data quality among GZS and spatial data users have just began to sprout, partly because information about spatial data quality is not readily available or useful. Meta...

In this paper we present an approach for quality inspection and quality improvement of spatial data that is based on map matching and map fusion. Two different datasets (GDF/TeleAtlas and OpenStreetMap) are used in this study. At first, the edges in the two datasets are matched manually with a tool developed in VBA and ArcGIS. Then, the form of the matching pairs in both datasets is calculated ...

Recently standardized wireless systems have multiple Time-Slots in a radio frame, but existing MUMIMO schedulers are not utilizing multiple Time-Slots efficiently. In this paper we propose a sub-optimal user grouping algorithm utilizing multiple Time-Slots efficiently. The proposed algorithm disperses highly-correlated users in different Time-Slots to prevent severe degradation of spatial multi...