To first order, seismic data provides the geologist and the geophysicist with information on the geometrical relationships between subsurface lithologic boundaries. Generally, this spatial information is used to construct conceptual geologic and process models with which to explain the origins of stratigraphic features. From such models we infer lithologic content. Various methods (e.g. AVO, Co...

This paper introduces GAVIP, an interactive and immersive platform allowing for audio-visual virtual objects to be controlled in real-time by physical gestures and with a high degree of intermodal coherency. The focus is particularly put on two scenarios exploring the interaction between a user and the audio, visual, and spatial synthesis of a virtual world. This platform can be seen as an exte...

Recently there has been considerable interest in cache coherency protocols in shared-memory multiprocessor systems, particularly in protocols which are scalable, i.e. suitable for very large systems. However, cache coherency scalability (CCS) entails heavy performance overhead and system cost, so a critical examination of the assumptions underlying the quest for CCS is undertaken here. A non-CC...

JUMP-1 is currently under development by seven Japanese universities to establish techniques of an e cient distributed shared memory on a massively parallel processor. It provides a memory coherency control scheme called the hierarchical bit-map directory to achieve cost e ective and high performance management of the cache memory. Messages for maintaining cache coherency are transferred throug...

In this paper, we describe new protocols augmenting traditional cache coherency mechanisms to implement fault-tolerance based on Recovery Blocks and checkpointing. Concurrent processes compound rollback recovery since the rollback can potentially lead to a "domino-effect" whereby the process is rolled back to the beginning. Several approaches have been proposed to limit the domino effect. One s...

This paper considers the effects of gravitational induced uncertainty on some well-known quantum optics issues. First we will show that gravitational effects at quantum level destroy the notion of harmonic oscillations. Then it will be shown that, although it is possible(at least in principle) to have complete coherency and vanishing broadening in usual quantum optics, gravitational induced unc...