Two phase transitions in the fully frustrated XYXY model

The fully frustrated $XY$ model on a square lattice is studied by means of Monte Carlo simulations. A Kosterlitz-Thouless transition is found at $T_{\rm KT} \approx 0.446$, followed by an ordinary Ising transition at a slightly higher temperature, $T_c \approx 0.452$. The non-Ising exponents reported by others, are explained as a failure of finite size scaling due to the screening length associated with the nearby Kosterlitz-Thouless transition.Comment: REVTEX file, 8 pages, 5 figures in uuencoded postscrip

Universal Behavior in Excited Heavy-Light and Light-Light Mesons

A common pattern of large orbital and radial excitations in heavy-light and light-light mesons is demonstrated. Within a general potential model the Regge slopes of the light degrees of freedom for these mesons are shown to be in the ratio of two. The possibility of ``tower'' degeneracy occurs only with pure scalar confinement.Comment: Latex, 10 pages, 2 figures placed using epsf.sty. Z-compressed postscript version available at http://phenom.physics.wisc.edu/pub/preprints/1996/madph-96-970.ps.Z or at ftp://phenom.physics.wisc.edu/pub/preprints/1996/madph-96-970.ps.

Power/knowledge: The discursive construction of an author

This article reports the findings of a study examining the social/discursive construction of an author (Brenda Dervin) by an international community of researchers (information behavior researchers). A crucial conceptual starting point for the study was Michel Foucault's work on the discursive construction of power/knowledge. The study represents one attempt to develop a discourse analytic approach to the study of information behavior. The researcher carried out semistructured qualitative interviews, based in part on Dervin's "Life-Line" and "Time-Line" techniques, with fifteen information behavior researchers from eight universities in five countries in Europe and North America. The study's findings provide a case study in how discourse operates at the microsociological level. It provides examples of how community members engage with, accept, and contest both new and established "truth statements" and discursive practices. They demonstrate that both participants' formal and informal information behaviors are the product of discursive power/knowledge relations. © 2007 by The University of Chicago. All rights reserved

Making sense of the past: The embodied information practices of field archaeologists

© The Author(s) 2016. This paper reports the findings of a study of the information practices of archaeologists, students and volunteers undertaking an excavation in the field. Conceptually, the study was guided by a social constructionist and practice-theoretical epistemological standpoint. Methodologically, the study employed a multi-faceted approach incorporating both ethnographic observation of archaeologists working in the field and in-depth interviews. The findings show that participants' practices were both social and embodied in nature