Abstract: We propose and justify a model for seasonal rainfall using a copula of maximum entropy to model the joint distribution and using gamma distributions to model the marginal monthly rainfalls. The model allows correlation between individual months and thereby enables a much improved model for seasonal variation. A central theme is the principle of maximum entropy which we use to find the...

An attempt was made to apply Mn-impregnated acrylic fiber to the collection of small amounts of Ra isotopes in natural waters. The Mn compound incorporated in this material was estimated to be KMn8O16•E H2O, which occurred naturally in Japan as cryptomelane. Collection by the Mn-impregnated acrylic fiber was effective in the pH region higher than 4 and the collecting efficiency was dependent on...

of a thesis presented to the Faculty of the University at Albany, State University of New York in partial fulfillment of the requirements for the degree of Master of Science College of Arts and Sciences Department of Earth and Atmospheric Sciences Matthew D. Greenstein 2006 ABSTRACT While forecasters can predict likely areas of precipitation, problems remain inWhile forecasters can predict like...