Kaluza-Klein monopole and H-monopole solutions, which are T-dual to each other, are the well-known solutions of string theory compactified on T . Since string theory in this case has an S-duality symmetry, we explicitly construct the corresponding dyonic solutions by expressing the D = 4 string effective action in a manifestly SL(2, R) invariant form with an SL(2, R) invariant constraint. The S...

1 UHI Millennium Institute, Scottish Association for Marine Science, Dunstaffnage Marine Laboratory, Oban PA37 1QA, Scotland, UK 2 Scottish Association for Marine Science, Dunstaffnage Marine Laboratory, Oban PA37 1QA, Scotland, UK 3 Environmental Systems Research Group, Geography Department, University of Dundee, Dundee DD1 4HN, Scotland, UK * now at: Institute of Marine Geology and Chemistry,...

After 15 males invaded troops of wild red howler monkeys {Alouatta seniculus) present in Venezuela during the period from Apr. 1989 to May 1991, five infant killings and eight infant disappearances occurred. Among the eight groups that were invaded, 10 infants of less than 3 mo old and three of over 5 mo old were killed either by the adult or subadult males, or disappeared. However, on the five...

The problem of monitoring the mean (or other aspect) of an evolving time series for deviations from some ideal state arises frequently in such fields as industrial quality control, clinical trials and air (or other) pollution monitoring. This so-called sequential detection problem has been widely studied in the case where the time series consists of independent random variables, a situation whi...

The mechanism of protein-only prion replication is controversial. A detailed mathematical model of prion replication by nucleated polymerisation is developed, and its parameters are estimated from published data. PrP-res decay is around two orders of magnitude slower than PrP-sen decay, a plausible ratio of two parameters estimated from very different experiments. By varying the polymer breakag...

Amartya Sen has argued that many development and freedom measures such as health, education, political and civil liberties are important constituents of human welfare. We concur with Sen and conjecture that an important reason these measures affect human welfare is because they allow individuals to better cope with risk and uncertainty that cannot be hedged using market based insurance mechanis...

Social choice theory is concerned with the evaluation of alternative methods of collective decision-making, as well as with the logical foundations of welfare economics. In turn, welfare economics is concerned with the critical scrutiny of the performance of actual and/or imaginary economic systems, as well as with the critique, design and implementation of alternative economic policies. The Ha...

State Key Laboratory of Biocontrol and College of Ecology and Evolution, Sun Yat-sen University, Guangzhou 510275, China, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China, Department of Life Science, National Taiwan Normal University, Taipei 116, Taiwan, Department of Biology, University of Fribourg, Chemin du Mus ee 10, CH 1700 Fribourg, Switzerland, Swiss Insti...

The structure of spinning particle suggested by the rotating KerrNewman ( black hole ) solution, super-Kerr-Newman solution and the Kerr-Sen solution to low energy string theory is considered. Main peculiarities of the Kerr spinning particle are discussed: a vortex of twisting principal null congruence, singular ring and the Kerr source representing a rotating relativistic disk of the Compton s...

Sincerely yours, Xiulan Zhang, MD, PhD Professor of Ophthalmology, Vice director of Glaucoma Department, Director of Clinical Research Center, Director of Institution of Drug Clinical Trials, Zhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, Sun Yat-sen University 54S.Xianlie Road, Guangzhou, China 510060 Email: [email protected]. Tel: +86-20-87330484 Fax: +86-20-87333...