نتایج جستجو برای: cops

تعداد نتایج: 1057  

2015
Saeed Akhoondian Amiri Lukasz Kaiser Stephan Kreutzer Roman Rabinovich Sebastian Siebertz

In cops and robber games a number of cops tries to capture a robber in a graph. A variant of these games on undirected graphs characterises tree width by the least number of cops needed to win. We consider cops and robber games on digraphs and width measures (such as DAG-width, directed tree width or D-width) corresponding to them. All of them generalise tree width and the game characterising i...

2012
Roman Kislov Kieran Walshe Gill Harvey

BACKGROUND Effective implementation of change in healthcare organisations involves multiple professional and organisational groups and is often impeded by professional and organisational boundaries that present relatively impermeable barriers to sharing knowledge and spreading work practices. Informed by the theory of communities of practice (CoPs), this study explored the effects of intra-orga...

2014
Vanessa M Schmidt Nicola J Williams Gina Pinchbeck Caroline E Corless Stephen Shaw Neil McEwan Susan Dawson Tim Nuttall

BACKGROUND Coagulase-positive (CoPS) and coagulase-negative (CoNS) staphylococci are normal commensals of the skin and mucosa, but are also opportunist pathogens. Meticillin-resistant (MR) and multidrug-resistant (MDR) isolates are increasing in human and veterinary healthcare. Healthy humans and other animals harbour a variety of staphylococci, including MR-CoPS and MR-CoNS. The main aims of t...

Journal: :Theor. Comput. Sci. 2014
Robert Sámal Tomás Valla

The guarding game is a game in which several cops try to guard a region in a (directed or undirected) graph against a robber. The robber and the cops are placed on the vertices of the graph; they take turns in moving to adjacent vertices (or staying), cops inside the guarded region, the robber on the remaining vertices (the robber-region). The goal of the robber is to enter the guarded region a...

2015
Dariusz Dereniowski Danny Dyer Ryan M. Tifenbach Boting Yang

We examine the zero-visibility cops and robber graph searching model, which differs from the classical cops & robber game in one way: the robber is invisible. We show that this model is not monotonic. We also provide bounds on both the zero-visibility copnumber and monotonic zerovisibility copnumber in terms of the pathwidth.

2007
Bernadette Charlier Liliane Esnault France Henri Christine Vanoirbeek

The paper aims at showing how Participatory Design contributes to the understanding of learning processes related to Communities of Practice (CoPs) and, at the same time, to the design and implementation of Web Services to support organisational and individual learning in CoPs. This research builds on the European PALETTE project.

Journal: :Discrete Mathematics 2012
Nancy E. Clarke Gary MacGillivray

We give two characterizations of the graphs on which k cops have a winning strategy in the game of Cops and Robber. One of these is in terms of an order relation, and one is in terms of a vertex ordering. Both generalize characterizations known for the case k = 1. © 2012 Elsevier B.V. All rights reserved.

2011
Deepak Bhadauria Volkan Isler

We study a pursuit-evasion game in which one or more cops try to capture a robber by moving onto the robber’s current location. All players have equal maximum velocities. They can observe each other at all times. We show that three cops can capture the robber in any polygonal environment (which can contain any finite number of holes).

Journal: :CoRR 2011
Robert Sámal Tomás Valla

The guarding game is a game in which several cops try to guard a region in a (directed or undirected) graph against a robber. The robber and the cops are placed on the vertices of the graph; they take turns in moving to adjacent vertices (or staying), cops inside the guarded region, the robber on the remaining vertices (the robber-region). The goal of the robber is to enter the guarded region a...

Journal: :The Journal of Cell Biology 1996
D Faulstich S Auerbach L Orci M Ravazzola S Wegchingel F Lottspeich G Stenbeck C Harter F T Wieland H Tschochner

Coatomer is a cytosolic protein complex that forms the coat of COP I-coated transport vesicles. In our attempt to analyze the physical and functional interactions between its seven subunits (coat proteins, [COPs] alpha-zeta), we engaged in a program to clone and characterize the individual coatomer subunits. We have now cloned, sequenced, and overexpressed bovine alpha-COP, the 135-kD subunit o...

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