1The first author was supported by Austrian Science Fund (FWF) project M 1408-N25. 2The second author is indebted to W. Hugh Woodin, Ilijas Farah, and Menachem Magidor for crucial conversations on the topics of this paper. He is also grateful to Andrés Caicedo and Paul Larson for many conversations on the topics of this paper in particular during the SQuaRE meetings at the AIM in Palo Alto, May...

One hundred twenty species of aleocharine beetles (Staphylinidae) are recognized in the province of Saskatchewan. Sixty-five new provincial records, including twelve new species and one new North American record, are presented. Oligota inflata (Mannerheim), a Palearctic species, is newly recorded for North America. The following twelve species are described as new to science: Acrotona pseudopyg...

We have investigated the evolution and distribution of molecules in collapsing prestellar cores via numerical chemical models, adopting the Larson-Penston solution and its delayed analogues to study collapse. Molecular abundances and distributions in a collapsing core are determined by the balance among the dynamical, chemical and adsorption time scales. When the central density nH of a prestel...

Paul Larson and Erich Neuhold are previous TCDE chairs and have served TCDE for many years revitalizing its activities. Their valuable experience will be greatly appreciated for promoting TCDE and for serving its members. David Lomet, a previous TCDE chair, has been Chief Editor of Data Engineering Bulletin since 1992. It is his leadership that has been at the heart of the success of IEEE Data ...

introduction: rheumatoid arthritis (ra) is the most common autoimmune joint disease. osteoporosis is a well-known consequence of ra. objective: the aim of the present study was to determine the interrelationship between radiographic findings and bone mineral density (bmd) in patients with ra. methods: 70 patients with established ra (according to 1987 acr criteria) were included in a cross-sect...

This paper examines the theoretical impacts of spatial externalities whose marginal impacts decline with distance, referred to as “edge effect externalities”. A simple one dimensional model appropriate for analysis of policy measures and the potential for bargaining between affected agents is outlined, and the production impacts of this class of externalities are illustrated. Edge effect extern...