There are different amounts of cognition involved in navigation when considering different species and different goals. This starts with simple aiming and obstacle avoidance already present in one-cell organisms, over route-following for example in insects, to high-level survey navigation which includes both topological and metric information. A useful categorisation of these different skill le...

Richard L. Hall 1 , Wolfgang Lucha 2 , and Franz F. Schöberl 3 (1) Department of Mathematics and Statistics, Concordia University, 1455 de Maisonneuve Boulevard West, Montréal, Québec, Canada H3G 1M8 (2) Institut für Hochenergiephysik, Österreichische Akademie der Wissenschaften, Nikolsdorfergasse 18, A-1050 Wien, Austria (3) Institut für Theoretische Physik, Universität Wien, Boltzmanngasse 5,...

New in this issue is the first of what is intended to be a series of ‘Meet the committee’ interviews. e featured interviewee is Jill House, a loyal and long-standing member of the Club and committee, and a singer of remarkable versatility. Other items include reviews of last season’s CMC concerts and of a seminar at the Institute of Musical Resear; articles on two of ’s anniversary compos...

Abstract: The objective of this study was to fabricate topical formulations of diclofenac diethylamine (DD) using isopropyl myristate (IPM) and isopropyl palmitate (IPP) as permeation enhancers. Franz cell and bacterial cellulose were used as analytical instrument and diffusion membrane, respectively. Permeation enhancers exhibited significant effect on the permeation characteristics of DD. It ...