University of Portsmouth

About: University of Portsmouth is a education organization based out in Portsmouth, Portsmouth, United Kingdom. It is known for research contribution in the topics: Population & Galaxy. The organization has 5452 authors who have published 14256 publications receiving 424346 citations. The organization is also known as: Portsmouth and Gosport School of Science and Art & Portsmouth and Gosport School of Science and the Arts.

Erratum: The eighth data release of the sloan digital sky survey: First data from SDSS-III (The Astrophysical Journal Supplement Series (2011) 193 (29))

Abstract: Section 3.5 of Aihara et al. (2011) described various sources of systematic error in the astrometry of the imaging data of the Sloan Digital Sky Survey (SDSS). In addition to these sources of error, there is an additional and more serious error, which introduces a large systematic shift in the astrometry over a large area around the north celestial pole. The region has irregular boundaries but in places extends as far south as declination δ ≈ 41◦. The sense of the shift is that the positions of all sources in the affected area are offset by roughly 250 mas in a northwest direction. We have updated the SDSS online documentation to reflect these errors, and to provide detailed quality information for each SDSS field.

Beyond expertise: theory, practice and the reflexive practitioner

Abstract: This paper reconsiders Benner's book From Novice to Expert, in which the expert is portrayed as a reflective practitioner who works intuitively, drawing almost unconsciously on a repertoire of context-specific paradigm cases. In the light of more recent writings on informal, practice-based theory, it is suggested that there is a sixth level beyond expertise which is characterized by mindful practice and informal theory building. At this level, the practitioner constructs informal theory out of practice, applies that theory back into practice, and reflexively modifies the theory as a result of the changed clinical situation. Seen in this way, theory and practice are two parts of the same process, and the theory-practice gap is closed.