In this paper, we introduce a prewrite operation before a write operation in a mobile transaction to improve data availability. A prewrite operation does not update the state of a...
In this paper, we motivate four di erent user de ned window query classes and derive a probabilistic model for each of them. For each model, we characterize the e ciency of spatia...
Bernd-Uwe Pagel, Hans-Werner Six, Heinrich Toben, ...
In this paper, we present an efficient algorithm for managing replicated data. We impose a logical tree structure on the set of copies of an object. In a failurefree environment t...
In an earlier study a Semantic Content Based Image Retrieval system was developed. The system requires a Visual Object Process Diagram - VOPD to be created for each image in the d...
Provenance, or records of the origin, context, custody, derivation or other historical information about a (digital) object, has recently become an important research topic in a n...