In this paper, we consider a discrete-time queue of Geo/Geo/c type with geometric repeated attempts. It is known that its continuous counterpart, namely the M/M/c queue with exponential retrials, is analytically intractable due to the spatial heterogeneity of the underlying Markov chain, caused from the retrial feature. In discrete-time, the occurrence of multiple events at each slot increases ...

The geo-spatial database is a new technology in database systems which allow storing, retrieving and maintaining the spatial data. In this paper, we seek to design and implement a geo-spatial database for managing the traveler’s demand with the aid of open-source tools and object-relational database package. The building of geo-spatial database starts with the design of data model in terms of c...