6C radio galaxies at z~1: The influence of radio power on the alignment effect

Powerful radio galaxies often display enhanced optical/UV continuum emission and extended emission line regions, elongated and aligned with the radio jet axis. The expansion of the radio source strongly affects the gas clouds in the surrounding IGM, and the kinematic and ionization properties of the extended emission line regions display considerable variation over the lifetime of individual sources, as well as with cosmic epoch. We present the results of deep rest-frame UV and optical imaging and UV spectroscopy of high redshift 6C radio galaxies. The interdependence of the host galaxy and radio source properties are discussed, considering: (i) the relative contribution of shocks associated with the expanding radio source to the observed emission line gas kinematics, and their effect on the ionization state of the gas; (ii) the similarities and differences between the morphologies of the host galaxies and aligned emission for a range of radio source powers; and (iii) the influence of radio power on the strength of the observed alignment effect.Comment: LaTeX, 6 pages, 5 figures, Elsevier Science format. To appear in "Radio galaxies: past, present & future". eds. M. Jarvis et al., Leiden, Nov 200

Player heart rate responses and pony external load measures during 16-goal Polo

This dataset provides information pertaining to the spatiotemporal stresses experienced by Polo ponies in play and the cardiovascular responses to these demands by Polo players, during 16-goal Polo. Data were collected by player-worn GPS units and paired heart rate monitors, across a New Zealand Polo season. The dataset comprises observations from 160 chukkas of Open Polo, and is presented as per chukka per game (curated) and in per effort per player (raw) formats. Data for distance, speed, and high intensity metrics are presented and are further categorised into five equine-based speed zones, in accordance with previous literature. The purpose of this dataset is to provide a detailed quantification of the load experienced by Polo players and their ponies at the highest domestic performance level in New Zealand, as well as advancing the scope of previous Polo literature that has employed GPS or heart rate monitoring technologies. This dataset may be of interest to equine scientists and trainers, veterinary practitioners, and sports scientists. An exemplar template is provided to facilitate the adoption of this data collection approach by other practitioner

Algebraic Multigrid for Disordered Systems and Lattice Gauge Theories

The construction of multigrid operators for disordered linear lattice operators, in particular the fermion matrix in lattice gauge theories, by means of algebraic multigrid and block LU decomposition is discussed. In this formalism, the effective coarse-grid operator is obtained as the Schur complement of the original matrix. An optimal approximation to it is found by a numerical optimization procedure akin to Monte Carlo renormalization, resulting in a generalized (gauge-path dependent) stencil that is easily evaluated for a given disorder field. Applications to preconditioning and relaxation methods are investigated.Comment: 43 pages, 14 figures, revtex4 styl

Goffman Told Me, It Is Really Hard to Do That Kind of Thing Well, and That Was About all the Advice I Ever Got from Him

This interview with Joel Best was recorded on August 13, 2007, during the ASA Annual meeting in New York. Dmitri Shalin transcribed the audio recording and Joel Best edited the text and gave his approval for posting the present version in the Erving Goffman Archives. Breaks in the conversation flow are indicated by ellipses. Supplementary information appears in square brackets. Undecipherable words and unclear passages are identified in the text as “[?]”. The interviewer’s questions are shortened a bit in several places

Rare B Decays at BaBar

We report recent results in the search for the rare B meson decays B-->rho gamma and B0-->pi0 pi0. These results are based on 56.4 1/fb collected by the BaBar Collaboration at the SLAC PEP-II e+e- B Factory. We set new 90% confidence level upper limits BR(B0 --> rho0 gamma) rho+ gamma) pi0 pi0) < 3.4 x 10^-6.Comment: 4 pages, 4 figures; invited talk given at XXXVIIth Rencontres de Moriond QCD and High Energy Hadronic Interactions, 16-23 March 200

Crossing the Bridge of Size: Reaching a Deal at Nice

The Intergovernmental Conference which should conclude at Nice in December 2000 deals with issues of institutional reform which must be resolved before proceeding with enlargement. There are four main questions. Should all countries be able to name a Member of the European Commission, or should the number of Commissioners be ‘capped’ at a number lower than the number of Member States? How should the weighting of Member States’ votes in the Council be adjusted to ensure that winning coalitions under qualified-majority voting represent an adequate proportion of the total EU population – as well as to ‘compensate’ those five Member States which lose their second Commissioner? How far should qualified-majority voting be extended? Should the conditions for ‘closer cooperation’ be relaxed to make it easier to press ahead with integration in particular areas without the participation of all Member States? A deal must be reached at Nice, but the IGC has revealed serious differences between the Member States. There is likely to be an agreement: for one Commissioner per Member State, probably with an internal hierarchy; a significant reweighting of votes in favour of the big Member States; a moderate extension of qualified-majority voting; and at least the removal of the veto regarding closer cooperation. Yet relative size has emerged as a source of frictions and concerns about long-term solidarity. The big countries fear being tied down. The smaller ones have long-term concerns about being dominated or absorbed, as well as presentational problems. If all the results of the IGC are seen as concessions to the large countries, it will be hard to sell the Nice Treaty at home – and Denmark has again shown that people can say No. Too much intergovernmentalism is not the answer. The Community institutions cannot do everything, but they have played an essential role in overcoming fears about relative power. They need to be renewed, not replaced