Mike Berridge and Bob Michell

John Michell Clarke

Michell Trusses and Lines of Principal Action

We study the problem of Michell trusses when the system of applied equilibrated forces is a vector measure with compact support. We introduce a class of stress tensors which can be written as a superposition of rank-one tensors carried by curves (lines of principal strains). Optimality conditions are given for such families showing in particular that optimal stress tensors are carried by mutual...

Mike Anderson

Mike Holcombe

The generalized stream X-machines (stream X-machines with basic functions replaced by relations and having as output, strings of symbols rather than single symbols) with output delimiter (any output string has at the right end side a special delimiter) are introduced. It is proved that testing methods similar to those already developed for ordinary determi-nistic stream X-machines may be applie...

Bob Steneck

Bob Steneck is professor of marine biology, oceanography and marine policy in University of Maine’s School of Marine Sciences. He is a marine ecologist whose ‘laboratories’ include coral reefs in the Caribbean and Indopacific oceans and kelp forests of the North Atlantic and North Pacific Oceans. He has published over 150 scientific papers on topics including lobsters, sea urchins, fish, corals...