Quantum suppression of shot noise in field emitters

We have analyzed the shot noise of electron emission under strong applied electric fields within the Landauer-Buttiker scheme. In contrast to the previous studies of vacuum-tube emitters, we show that in new generation electron emitters, scaled down to the nanometer dimensions, shot noise much smaller than the Schottky noise is observable. Carbon nanotube field emitters are among possible candidates to observe the effect of shot-noise suppression caused by quantum partitioning.Comment: 5 pages, 1 fig, minor changes, published versio

Psychology and aggression

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/68264/2/10.1177_002200275900300301.pd

Toward the automatic derivation of XML transformations

Abstract. Existing solutions to data and schema integration require user interaction/input to generate a data transformation between two different schemas. These approaches are not appropriate in situations where many data transformations are needed or where data transformations have to be generated frequently. We describe an approach to an automatic XML-transformation generator that is based on a theory of information-preserving and-approximating XML operations. Our approach builds on a formal semantics for XML operations and their associated DTD transformation and on an axiomatic theory of information preservation and approximation. This combination enables the inference of a sequence of XML transformations by a search algorithm based on the operations ’ DTD transformations.