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...

Qinlong Luo,1,2 Andrew Nicholson,1,2 José Riera,3 Dao-Xin Yao,4 Adriana Moreo,1,2 and Elbio Dagotto1,2 1Department of Physics and Astronomy, The University of Tennessee, Knoxville, Tennessee 37996, USA 2Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA 3Instituto de Fı́sica Rosario, Universidad Nacional de Rosario, 2000-Rosario, Argentina 4...

a Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai, 519082, Guangdong, China b Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China c State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China d Center for Theoretical Nuclear Physics, National Laboratory for Heavy Ion P...

This study examines the impact of contract farming with Farmer Organizations on farmers’ income. Contract farming with farmer organizations is a smallholder farmer-inclusive contract farming system. Field surveys were conducted in August 2010 with 75 farmers (including 39 contract farmers) in Kampong Thom province, Cambodia. The analysis—i.e., using a treatment effects model—indicates that cont...