Due to the abundance of information, querying the World Wide Web has become increasingly difficult. Geographic properties of Internet resources can be directly used for making Internet search more personalized and for increasing the quality of results. However, little work has been done in this area so far and the general direction of research and development has been uncertain. In this paper, ...

But it has its flaws. As early as the 1980's, the GIS community has been accused of elitism, archaism and being, in essence, “ivory tower geomancers.” Although not all of the GIS community deserved these pejoratives, the problem may have arisen because of the things we “fought” about, such as the use of mainline IT databases, the separation of geometry and “nongraphic” attributes, the effective...

DEFINITION: A geographic information system (GIS) is a computer application designed to perform a wide range of operations on geographic information. Geographic information is defined as information about locations on or near the surface of the Earth, and may be organized in a variety of ways. Thus a GIS includes functions to input, store, visualize, export, and analyze such information. Commer...

The aim of this study was to geospatially explore the occurrence rates of car accidents involving pedestrians in Cercado de Lima (Lima District), Peru. Car accidents involving pedestrians recorded in the 2015 National Police Station Census of the National Statistics and Information Institute were described and georeferenced. Subsequently, a Kernel Density analysis was carried out to locate area...

This tutorial provides a foundation in GIS including its basic structure and concepts, and spatial analysis. Spatial Decision Support Systems are introduced, emphasizing one current model. The links of GIS to related technologies such as GPS, wireless, location-based technologies, and RFID are examined. The tutorial gives an overview of vertical-sector uses of GIS, and concentrates on a few exa...

Assessment of geographic information infrastructures (or spatial data infrastructures) is increasingly attracting the attention of researchers in the Geographic information (GI) domain. Especially the assessment of value added GI appears to be complex. By applying the concept of value chain analysis to GI, this paper provides a research framework for unambiguously assessing GI value adding. The...

graph graph and geography the geographical problem Figure 3.11: The Koenigsberg bridge problem and its graphical representation. The problem and its associated graph is shown in Figure 3.11 and this allows us to prove it is impossible to visit all the land masses, crossing each bridge only once. Graphs are a topological construct, and do not have a notion of distance associated with them in gen...

In this work we outline the vision of geographic information observatories, explain how and why GIScience would benefit from broadening its range to studies of the information universe (without necessarily relating it back to the physical universe), how our technology stack puts the GIScience community in a unique position to develop such observatories, and illustrate how these observatories wo...