The introduction of spatio-temporal information in database systems presents us with an important data modelling challenge: the design of data models general and powerful enough to handle conventional thematic data, purely temporal or spatial concepts and spatio-temporal concepts. General purpose DBMS (e.g., relational) are not appropriate for storing and manipulating spatio-temporal data becau...

We present the combination of microscopic model calculations and direct experimental evidence for complex spatio-temporal dynamics on a picosec-ond timescale in the near-eld of a broad area semiconductor laser induced by the interplay of self-focusing, diiraction, and spatial hole burning. We demonstrate the formation of migrating optical laments within the turn-on dynamics of such a laser and ...

In this paper a new concept, spatio-temporal generalized frequency response functions (STGFRF), is introduced for the first time to characterize nonlinear spatio-temporal dynamical systems in the frequency domain. A probing method is developed to calculate the STGFRFs recursively for both continuous and discrete spatio-temporal systems. The algorithm is computationally compact and exposes the e...

Copyright © 2008, IGI Global. Copying or distributing in print or electronic forms without written permission of IGI Global is prohibited. Association rule mining in spatial databases and temporal databases have been studied extensively in data mining research. Most of the research studies have found interesting patterns in either spatial information or temporal information, however, few studie...