biological invasions form a major threat to the provision of ecosystems productsand services and can affect ecosystems across a wide spectrum of bioclimatic conditions.therefore, it is important to systematically monitor the spread of species over broad regions. ithas long been recognized that remote sensing and geographical information system couldcontribute to this capacity. this paper aims t...

As plantas alimentícias não convencionais (PANCs) são hortaliças nativas, normalmente encontradas em calçadas ou terrenos abandonados, sempre fizeram parte do cardápio dos antepassados. No entanto, com a modernização da agricultura e êxodo rural, seu consumo foi esquecido de ser repassado para as gerações futuras. O objetivo deste estudo consistiu realizar um levantamento bibliográfico sobre (P...

Received for publication 15 July 1985. t Nematologist, Istituto Nematologia Agraria, CNR, via Amendola 165/A, 70126 Bari, Italy. Nematologist, Servicio Agricola y Ganadero, Division Protection Agricola, Ministerio de Agricultura, Santiago, Chile. s Nematologist, Division of Plant Industry, P.O. Box 1969, Gainesville, FL 32602. cliophora arenaria Raski, Longidorus spp., Paratrichodorus spp., Tri...

We propose an algebra of regular hedge expressions built on top of regular hedge grammars as a framework for the analysis and manipulation of hedge languages. We show how linear systems of hedge language equations (LS for short) can be used as an intermediate representation on which to perform the computation of quotient, intersection, product derivative, and factor matrix of regular hedge lang...

We consider portfolio allocation in which the underlying investment instruments are hedge funds. We consider a family of utility functions involving the probability of outperforming a benchmark and expected regret relative to another benchmark. Non-normal return vectors with prescribed marginal distributions and correlation structure are modeled and simulated using the normal-to-anything method...

The Mystery of Pain, a little book which sets forth the Panglossian thesis that "all that which we feel as painful is really giving-something that our fellows are better for, even though we cannot trace it." It gives some idea of the tum of the son CQaries Hinton's mind to lea:rn that he wrote a piece, "The Persian King," in which he attempted to use higher dimensions and infinite series to obt...