This paper assesses several broad approaches to language analysis with respect to the problem of lexical ambiguity. The impact of the problem on both syntactic and semantic analysis is discussed, and several common methods for disambiguation, including the use of selectional restrictions and scriptal lexicons, are analyzed. Their shortcomings illustrate the need for complex inference to resolve...

Parallel computation fortwo-dimensionat co)wective flows in cavities with adiabatic horizontal boundaries and driven by differential heating of the two vertical end walk, are investigated using the Intel Paragon, Intel Touchstone Delta, and Cray 13D. I’he numerical scheme, including a parallel multigrid solver, and domain decomposition techniques for parallel computing are discussed in detail. ...

Markov automata describe systems in terms of events which may be nondeterministic, may occur probabilistically, or may be subject to time delays. We define a novel notion of weak bisimulation for such systems and prove that this provides both a sound and complete proof methodology for a natural extensional behavioural equivalence between such systems, a generalisation of reduction barbed congru...

Due to the distinct application conditions and environment, ad-hoc wireless network presents particular requirements on security establishment. Traditional solutions and frameworks for trust building and authentication do not fit anymore, because of either lack of some key elements or the new constraints imposed. This paper examines the differences of ad-hoc wireless network, extracts the probl...

High performance scientific data analysis is plagued by chronically inadequate I/O performance. The situation is aggravated by ever improving processor performance. For high performance multicomputers, such as the Touchstone Delta that possess in excess of 500, 60 megaflops, processor I/O will be the bottleneck for many scientific applications. This report describes ELFS (an ExtensibLe File Sys...

Winter, and an anonymous referee. Special thanks to Pauline Jacobson for extensive and incisive discussion. The analysis presented in this paper is a modest extension of joint work with Chung-chieh Shan (see Shan and Barker 2006 and Barker and Shan 2006), and many of the insights developed here are due to conversations with Shan. However, I have drawn conclusions here that Shan may not necessar...

In this study we investigate a case of an outsourced information systems (IS) failure (OISF) within the collaborative partnership among asymmetric partners. A small and medium-sized enterprise (SME) is dealing with an independent software vendor (ISV) conducting a project of implementing an IS that fails. We used a narrative research methodology for our enquiry. In the construction of our narra...

The goal of GILS is to make it easier for people to locate information, in all its forms, in all languages, for all time. This is perhaps a somewhat grand statement, but the free flow of information really is the touchstone of GILS. This leads into all sorts of interesting implications-ranging over technology policy, scientific research, socio-economics, geo-politics, and so on. Whether you cal...