In order to characterize the set of desirable social choice functions, researchers have proposed axioms that all social choice functions should satisfy. However, it has been shown that achieving these axioms is impossible. Instead of viewing this impossibility result as a limitation, it can be viewed as an opportunity. In this paper, we develop a means of comparing various social choice functio...

Lu and Boutilier proposed a novel approach based on"minimax regret"to use classical score based voting rules in the setting where preferences can be any partial (instead of complete) orders over the set of alternatives. We show here that such an approach is vulnerable to a new kind of manipulation which was not present in the classical (where preferences are complete orders) world of voting. We...

CORREsPOnDEnCE TO: Janet Copeland Research and Professional development, new Zealand society of Physiotherapists, PO Box 27386, Wellington, new Zealand janet@physiotherapy. org.nz Although Primary Health Organisations (PHOs) were established to provide coordinated primary health care involving a range of providers, physiotherapy involvement in PHOs is limited. This means that access to physioth...

Martin Kunz, Pier-Stefano Corasaniti, David Parkinson, and Edmund J. Copeland Astronomy Centre, University of Sussex, Brighton, BN1 9QJ, United Kingdom Department of Physics and Astronomy, University of Sussex, Brighton, BN1 9QJ, United Kingdom ISCAP, Columbia University, Mailcode 5247, New York, New York 10027, USA Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth, P...

Bulk and intra-tooth enamel stable isotopes of waterbuck Kobus ellipsiprymnus from Queen Elizabeth National Park, Uganda Sandi R. Copeland*, Matt Sponheimer, Clive A. Spinage and Julia A. Lee-Thorp Max Planck Institute for Evolutionary Anthropology, Department of Human Evolution, Deutscher Platz 6, D-04103, Leipzig, Germany, Department of Anthropology, University of Colorado at Boulder, 233 UCB...

MICHAEL L. PUCCI,1 YI BAO,1 BRENDA CHAN,1 SHIGEKAZU ITOH,1 RUN LU,1 NEAL G. COPELAND,2 DEBRA J. GILBERT,2 NANCY A. JENKINS,2 AND VICTOR L. SCHUSTER1 1Departments of Medicine, Physiology, and Biophysics, Albert Einstein College of Medicine, Bronx, New York 10461; 2Mammalian Genetics Laboratory, ABL-Basic Research Program, National Cancer Institute-Frederick Cancer Research and Development Center...

P. S. Corasaniti, M. Kunz, D. Parkinson, E. J. Copeland, and B. A. Bassett ISCAP, Columbia University, New York, New York 10027, USA Astronomy Centre, University of Sussex, Brighton, BN1 9QJ, United Kingdom Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth, PO1 2EG, United Kingdom Department of Physics and Astronomy, University of Sussex, Brighton, BN1 9QJ, United Kin...

Methods Fifty-five patients who underwent arthroscopic subacromial decompression were analyzed. Pre-operatively patients completed an assessment form consisting of visual analogue pain score, and shoulder satisfaction. The degree of clinical impingement was also recorded. At arthroscopy impingement was classified according to the Copeland-Levy classification. Post-operatively the shoulder asses...

SARAH J. CADDICK, CHUNSHENG WANG, COLIN F. FLETCHER, NANCY A. JENKINS, NEAL G. COPELAND, AND DAVID A. HOSFORD Department of Neurology, Medical College of Virginia, Richmond, Virginia 23298; Department of Medicine, Division of Neurology and Department of Neurobiology, Duke University Medical Center and Durham Veterans Affairs Medical Center, Durham, North Carolina 27705; and Mammalian Genetics L...

A central political and decision science issue is to understand how election outcomes can change with the choice of a procedure or the slate of candidates. These questions are answered for the important Copeland method (CM) where, with a geometric approach, we characterize all relationships among the rankings of positional voting methods and the CM. Then, we characterize all ways CM rankings ca...