A team consisting of an unknown number of mobile agents, starting from different nodes of an unknown network, have to meet at the same node and terminate. This problem is known as gathering. We study deterministic gathering algorithms under the assumption that agents are subject to crash faults which can occur at any time. Two fault scenarios are considered. A motion fault immobilizes the agent...

Regulation 1272/2008 includes provisions for two types of classification: harmonised classification and self-classification. The harmonised classification of substances is decided at Community level and a list of harmonised classifications is included in the Annex VI of the classification, labelling and packaging Regulation (CLP). If a chemical substance is not included in the harmonised classi...

We describe Razor, a planning-based information-gathering agent that assists users by automatically determining which Internet information sites are relevant to their query, accessing those sites in parallel, and integrating the results. Razor uses a disjunctive graphbased plan representation. It then uses a novel and powerful form of local completeness reasoning in order to transform those pla...

InfoSleuth is an agent-based system that can be configured to perform many different information management activities in a distributed environment. InfoSleuth agents provide a number of complex query services that require resolving ontology-based queries over dynamically changing, distributed, heterogeneous resources. These include distributed query processing, locationindependent single-resou...

Consider a set of n > 2 simple autonomous mobile robots (decentralized, asynchronous, no common coordinate system, no identities, no central coordination, no direct communication, no memory of the past, deterministic) moving freely in the plane and able to sense the positions of the other robots. We study the primitive task of gathering them at a point not fixed in advance (Gathering Problem). ...

Gathering a group of mobile agents is a fundamental task in the field of distributed and mobile systems. This can be made drastically more difficult to achieve when some agents are subject to faults, especially the Byzantine ones that are known as being the worst faults to handle. In this paper we study, from a deterministic point of view, the task of Byzantine gathering in a network modeled as...

Routledge Introductions to Applied Linguistics is a series of introductory level textbooks covering the core topics in Applied Linguistics, primarily designed for those entering postgraduate studies and language professionals returning to academic study. The books take an innovative “practice to theory” approach, with a ‘back-to-front’ structure. This leads the reader from real-world problems a...

was previously shewn to correlate with the five-year survival rate of human endometrial cancer patients. Variant cell tines with high (SNG-S) and low {SNG-W) levels of cell surface Leb antigen were isolated from the heterogeneous endometriel cencer cell line SNG-ll celts to characterize the biotegicat significance of Leb antigen on endometriat cancer cetls. SNG-S cetls mainly expressed Leb, whe...