Robert R. Odén 1922-2008

In memoriam: Beverly Petterson Bishop (1922-2008).

PTJ does not usually publish tributes, as there are so many physical therapists who have given so much to their profession and to rehabilitation science. We make an exception in this case because of the direct impact that Dr Beverly Bishop has had on PTJ's Editorial Board over the years. B orn in Corning, NY, Bishop earned a bachelor of science degree in mathematics from Syracuse University in ...

In memory of Professor John R. Cameron (1922-2005)

Replicating Robert Rosen's (M,R) Systems

The central interest of this paper is Robert Rosen's replicating (M,R)-Systems, presented in his book Life Itself, where M and R signify Metabolism and Repair, respectively. We look anew at Rosen's model of an organism in the light of extensive research into natural hierarchical systems, and this paper presents conclusions drawn from a comparison between Rosen's relational model of an organism ...

in memory of professor john r. cameron (1922-2005)

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Robert F. Denno (1945-2008): insect ecologist extraordinaire.

Robert F. Denno was widely recognized as one of the leading insect ecologists in the world. He made major contributions to the study of plant-insect interactions, dispersal, interspecific competition, predator-prey interactions, and food web dynamics. He was especially well known for his detailed and comprehensive study of the arthropods that inhabit salt marshes. Denno promoted a research appr...