Approximate conditional distributions of distances between nodes in a two-dimensional sensor network

When we represent a network of sensors in Euclidean space by a graph, there are two distances between any two nodes that we may consider. One of them is the Euclidean distance. The other is the distance between the two nodes in the graph, defined to be the number of edges on a shortest path between them. In this paper, we consider a network of sensors placed uniformly at random in a two-dimensional region and study two conditional distributions related to these distances. The first is the probability distribution of distances in the graph, conditioned on Euclidean distances; the other is the probability density function associated with Euclidean distances, conditioned on distances in the graph. We study these distributions both analytically (when feasible) and by means of simulations. To the best of our knowledge, our results constitute the first of their kind and open up the possibility of discovering improved solutions to certain sensor-network problems, as for example sensor localization

'Education, education, education' : legal, moral and clinical

This article brings together Professor Donald Nicolson's intellectual interest in professional legal ethics and his long-standing involvement with law clinics both as an advisor at the University of Cape Town and Director of the University of Bristol Law Clinic and the University of Strathclyde Law Clinic. In this article he looks at how legal education may help start this process of character development, arguing that the best means is through student involvement in voluntary law clinics. And here he builds upon his recent article which argues for voluntary, community service oriented law clinics over those which emphasise the education of students

A Metropolitan Library in Action; A Survey fo the Chicago Public Library (Book Review)

published or submitted for publicatio

Professional Library Associations

published or submitted for publicatio

1971 Sub-Librarians Meeting

The program included toasts from Helen Quinn, Dr. J.H. Shera, Francine Morris, and Laverne Prewitt. Research papers were presented by Jason Rouby, B.S.I; E.W. McDiarmid, B.S.I, and John N. Storck, Chief Drone of the Beekeepers of Lima, Ohio. In lieu of a toast and as a tribute to The Great Detective a reading of 221B Baker Street Vincent Starrett\u27s noted sonnet given by John Bennett Shaw, B.S.I