In this survey article, we first review the Chern-Weil theory of characteristic classes of vector bundles over smooth manifolds. Then some well-known characteristic classes appearing in many places in geometry and topology as well as some interesting results on them related to elliptic genera which involve some of my joint work in [HZ1, 2], are briefly introduced. 1. Chern-Weil theory for chara...

Most recent key developments in research on knowledge representation (KR) have been of the more theoretical sort, involving worstcase complexity results, solutions to technical challenge problems, etc. While some of this work has influenced practice in Artificial Intelligence, it is rarely—if ever—made clear what is compromised when the transition is made from relatively abstract theory to the ...

The paper is concerned with the specification and improvement of the traditional source-filter model of the human vocal tract proposed by G.Fant and analyzed by many scientists. The new method of recording the glottal wave synchronously with an output speech signal was employed to obtain the experimental material. The comparison of the recorded signals allowed analyzing the structure of the spe...

The deposition behaviors of carboxylate-modified polystyrene latex microspheres (six sizes ranging from 0.1 to 2.0 microm) in packed porous media (soda-lime glass beads) were examined under a variety of environmentally relevant pore fluid velocities (4-8 m-day(-1)) in the presence of an energy barrier to deposition. Hyperexponential profiles of retained colloids were observed for all microspher...

This annotated bibliography gives an overview of the theoretical literature on regional economic growth and examines its conceptual foundations, major competing paradigms, and recent developments. The overview concludes with a discussion of the policy implications suggested by this body of theory. Throughout the review, three themes are emphasized: (1) the theoretical predictions regarding the ...

High prevalence of human herpesvirus type 8 (HHV-8) infection has been reported on the island of Sardinia. Among emigrants from Sardinia, rates of HHV-8 infection are lower than they are in Sardinia and are similar to those observed in the local population. Thus, environmental factors seem to play a relevant role in affecting the prevalence of HHV-8 infection.

by RIChARd KENdALL Using various education and census databases 1 this policy brief explores the Latino education pipeline in New York State and, where possible, uses disaggregated data to analyze the changes in educational enrollment, attainment, and achievement for Latinos between 1990 and 2000. The education pipeline represents the distribution of Latinos nrolled in preschool through graduat...