Cartesian routing is a fast packet routing mechanism intended for geographic addresses and can effectively accelerate the packet routing process within a local or metropolitan environment. The wide area Cartesian routing described in this paper is an extension of the Cartesian routing algorithms designed to make the exchange of internetwork packets between geographical regions possible. It also...

In this short paper we describe a Wide Area Audio Synchronisation demonstration using the Quality of Service (QoS) facilities of the Nemesis operating system. The Nemesis operating system is a result of the ESPRIT funded Pegasus I research project. A stereo audio stream is split with each channel being input to one of two distinct network digitisation devices; one of the resulting streams is se...

In an ideal world the need to provide data communications between facilities separated by a large ocean would be filled simply. One would estimate the bandwidth requirement, place an order with a global telecommunications company, then just hook up routers on each end and start using the link. Our experience was considerably more painful, primarily due to three factors: 1) The behavior of some ...

In this paper we describe a mobile camera localization system that is able to accurately estimate the pose of an hand-held camera inside a known urban environment. The work leverages on a precomputed 3D structure obtained by a hierarchical Structure from Motion pipeline to compute the 2D-3D correspondences needed to orient the camera. The hierarchical cluster structure, given by the SfM, guides...

The TISDAG (Technical Infrastructure for Swedish Directory Access Gateway) project provided valuable insight into the current reality of deploying a wide-scale directory service. This document catalogues some of the experiences gained in developing the necessary infrastructure for a national (i.e., multi-organizational) directory service and pilot deployment of the service in an environment wit...

The last decades have seen the emergence of the sea of objects paradigm for structuring complex distributed systems on workstations and local area networks. In this approach, applications and system services are composed of and communicate among themselves through reliable and transparently accessible object interfaces, leading to the interaction of hundred or thousands of unstructured objects....

Sharing global remote data over large networks poses two major problems: rstly, the data must be discovered; and secondly, the data must be made accessible to the application. Our aim is to provide a single uniied interface to both local and remote data, removing location dependence and improving performance. Our solution incorporates shared memory and caching techniques. A location server prov...