ii Acknowledgments................................................................................................ v Map of proposed and accomplished dams in Sudan.......................................vi.............................................................................................................................vi List of abbreviations..........................................................................................vii

data, alog with the most likely path taken by the robot. Experimental results in cyclic environments of size up to 80 by 25 meter illustrate the appropriateness of the approach. Keywords: Bayes rule, expectation maximization, mobile robots, navigation, localization, mapping, maximum likelihood

Human institutions—ways of organizing activities—affect the resilience of the environ-ment. Locally evolved institutional arrangements governed by stable communities and buffered from outside forces have sustained resources successfully for centuries, al-though they often fail when rapid change

This paper addresses two unresolved issues about web caching. The first issue is whether web requests from a fixed user community are distributed according to Zipf's law [22]. Several early studies have supported this claim [9], [5], while other recent studies have suggested otherwise [16], [2

local routing algorithms and time daemons. Status of this Memo This RFC specifies an IAB standards track protocol for the Internet community and requests discussion and suggestions for improvements. Please refer to the current edition of the <169>IAB Official Protocol Standards<170>

in information systems. However, the process of objectifying ontologies results in ontological drift over time (as the community and its understanding evolves independently of the agreement) and results in the loss of local views over the domain. Several authors have suggested emergent semantics as a solution [1

a notion of hyperlinked communities on the www through an analysis of the link topology. Byinvoking a simple, mathematically clean method for de ning and exposing the structure of these communities, we are able to derive anumber of themes: The communities can be viewed as containing a core

Abstract: For many local communities in developing countries and elsewhere, the existence of large attractions nearby generates both benefits and costs. This paper examines some of the dynamics of the complex, nested relationships among host communities, their local her-itage sites, and tourism

There has been much recent research on identifying global community structure in networks. However, most existing approaches require complete information of the graph in question, which is impractical for some networks, e.g. the World Wide Web (WWW). Algorithms for local community detection have

(writing in a personal capacity) The drive to encourage the direct involvement of communities in their own governance, increasingly evident in political discourses from the turn of the century, was given a statutory basis in Scotland by The Local Government in Scotland Act 2003 which formally