A gambler moves between the vertices 1, . . . , n of a graph using the probability distribution p1, . . . , pn. Multiple cops pursue the gambler on the graph, only being able to move between adjacent vertices. We investigate the expected capture time for the gambler against k cops as a function of n and k for three versions of the game: • known gambler: the cops know the gambler’s distribution ...

Communities of practice (CoPs) have been identified as a means to enable acquisition and sharing of tacit knowledge in organizations. CoPs complement or even replace approaches where the focus is on storing and retrieving codified knowledge in documents and systems. This paper highlights some of the problematic aspects of using CoPs as a tool to improve knowledge sharing. Theories on coordinati...

Purpose – Communities of practice (CoPs) have gained a great deal of attention from practitioners and scholars alike. However, critical antecedents of knowledge sharing in CoPs have not been fully researched yet. Particularly, empirical results are still scarce. The aim of this paper is to analyse the role of community members’ motivation to participate in CoPs, the importance of the community ...

Two studies were conducted to determine the effects of dietary cholesterol (CHO) and cholesterol oxides (COPs) on the development of atherosclerosis and the changes in fatty acid and blood characteristics in rabbits. In the first study, forty male New Zealand white rabbits were divided into 5 groups and fed commercial rabbit chow with no added CHO or COPs, 1 g CHO, 0.9 g CHO + 0.1 g COPs, 0.8 g...

The work presented in this paper aims to elaborate a model of knowledge evaluation within ICT solutions-supported Communities of Practice (e-CoPs). It is placed in the context of Knowledge Management (KM) services that are developed in the PALETTE project dedicated to enhance learning dynamics within e-CoPs. Building upon a study of participation and reification processes within e-CoPs, we dist...

– Reference 32 was added to the following sentence, “This CoP exhibited the features of a successful CoP described by others [21, 29, 32].” – Citations in the sentence, “Some studies have reported on CoPs and their broad impact on systems where CoPs were part of a multi-faceted intervention [32-36]” were changed to, “Some studies have reported on CoPs and their broad impact on systems where CoP...

We study the problem of cops and robbers on the grid where the robber is allowed to move faster than the cops. It is well known that two cops are necessary and sufficient to catch the robber on any finite grid when the robber has unit speed. Here, we prove that when the speed of the robber is a sufficiently large constant, the number of cops needed to catch the robber on an n× n grid is exp(Ω(l...

This study was conducted to determine the effects of dietary cholesterol (CHO) and cholesterol oxidation products (COPs) on the induction of pathological lesions in rabbit liver tissues. Liver lesions were induced only when the levels of CHO and COPs in the diet were very high. The amount of CHO measured in the liver increased when dietary CHO was increased; by comparison, dietary COPs affected...

Copy Number Alterations (CNAs) such as deletions and duplications; compose a larger percentage of genetic variations than single nucleotide polymorphisms or other structural variations in cancer genomes that undergo major chromosomal re-arrangements. It is, therefore, imperative to identify cancer-specific somatic copy number alterations (SCNAs), with respect to matched normal tissue, in order ...

BACKGROUND Communities of Practice (CoPs) are promoted in the healthcare sector as a means of generating and sharing knowledge and improving organisational performance. However CoPs vary considerably in the way they are structured and operate in the sector. If CoPs are to be cultivated to benefit healthcare organisations, there is a need to examine and understand their application to date. To t...