Two protogalaxy candidates in one night

In spite of a lookback time of 77 to 89 percent of the age of the universe, Lilly provided evidence that the dominant stellar population in 0902 was surprisingly old, over 1 Gyr. This age estimate was based on the values K = 18.8 and I-K = 4.5 in the central 3.5 x 3.5 inch. At Lilly's suggestion, we reobserved 0902 at K, and in initial reductions of our data found only an upper limit (K greater than 19.5). After extensive experimentation with reduction techniques and correction for low-level systematic effects, we succeeded in extracting a four sigma detection at K = 19.9 in a 4 inch diameter circular aperture. The morphology and location of this detection were more reminescent of the Ly alpha image than of CCD continuum images, and in Mar. 1992, we obtained a narrow band image which included redshifted (OIII) 4959,5007 A line emission at 2.20 microns. This (OIII) image gave a strong detection which demonstrates that most of the central K flux, already reduced by a magnitude, is due to line emission. Our formal line corrected values in a 4 inch aperture are K = 21.5 and R-K = 1.9. Hence, 0902 has been transformed from relaxed maturity into unsettled youth

Negative-frequency modes in quantum field theory

We consider a departure from standard quantum field theory, constructed so as to permit momentum eigenstates of both positive and negative energy. The resulting theory is intriguing because it brings about the cancellation of leading ultra-violet divergences and the absence of a zero-point energy. The theory gives rise to tree-level source-to-source transition amplitudes that are manifestly causal and consistent with standard S-matrix elements. It also leads to the usual result for the oblique corrections to the standard electroweak theory. Remarkably, the latter agreement relies on the breakdown of naive perturbation theory due to resonance effects. It remains to be shown that there are no problems with perturbative unitarity.Comment: 15 pages. Prepared for the proceedings of DISCRETE2014: the Fourth Symposium on Prospects in the Physics of Discrete Symmetries, King's College London, to appear in the Journal of Physics: Conference Series (JPCS). Presented by P. Millingto

PuShing Performance Brands in Vancouver

What happens when a performing arts institution’s and a producing partner’s mutual desire to attract audiences to intelligent work that speaks to the diverse urban community each claims to represent comes up against a competing corporate brand? I explore this question by investigating the evolving relationship between Vancouver’s PuSh International Performing Arts Festival and SFU Woodward’s, home to Simon Fraser University’s School for the Contemporary Arts and a lightning rod for public debate following a controversial corporate rebranding in the fall of 2010. That rebranding, I argue, also exposes some of the materialist faultlines (cultural, economic, urban) subtending both PuSh’s program- ming at SFU Woodward’s and the latter’s placed-based identity within Vancouver’s economically depressed and socially marginal Downtown Eastside. The paper is divided into three sections. First, I provide some contextual background on PuSh and SFU Woodward’s, and on the development of their respective performance brands. Next, I draw on interviews with PuSh Artistic and Executive Director Norman Armour and Woodward’s Director of Cultural Programming Michael Boucher to assess the benefits and challenges that have so far accrued as a result of their partnership. Finally, I conclude with readings of three productions staged by PuSh at Woodward’s, arguing that their content helps to fore- ground competing ideologies of urban sustainability versus gentrification, and the role of non-profits (cultural and educational) in the rebranding of inner-city neighbourhoods.Que se passe-t-il quand un projet de collaboration entre une institution œuvrant dans le secteur des arts de la scène et un organisme partenaire qui veulent offrir des productions intelligentes à une communauté urbaine diversifiée se heurte à une image de marque concurrentielle ? C’est ce que cherche à savoir Dickinson dans cet article sur l’évolution des rapports entre le PuSh, un festival international des arts de la scène, et SFU Woodward’s, l’école d’arts contemporains de l’Université Simon Fraser, qui se sont attiré les critiques du public après une tentative d’adopter une nouvelle image de marque à l’automne 2010. Dickinson démontre que cette démarche a révélé certaines failles matérialistes (cultu- relles, économiques, urbaines) qui sous-tendaient à la fois la programmation du festival PuSh à SFU Woodward’s et l’identité même de SFU Woodward’s, inspirée de son emplacement dans le Downtown Eastside de Vancouver, un quartier défavorisé et marginalisé. L’article commence par une mise en contexte du festival PuSh et de SFU Woodward’s pour éclairer le processus qui a mené à la création de leurs images de marque respectives. Ensuite, l’auteur propose des extraits d’entretiens avec Norman Amour, directeur général du festival PuSh, et Michael Boucher, directeur de la programmation et des partenariats culturels à Woodward’s, dans lesquels ces derniers exposent les avantages et les défis résultant de leur partenariat. Pour conclure, Dickinson analyse trois pièces mises en scène au festival PuSh à Woodward’s et fait valoir que leur contenu met en relief le débat idéologique qui oppose le développement urbain durable et l’embourgeoisement et soulève la question du rôle que jouent les organismes sans but lucratif (culturels et éducatifs) dans la transformation de l’image associée aux quartiers du centre-ville

Manifesto

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The Fate of Nitrogen in Wastewater Applied to Rapid Infiltration-Percolation Basins

The objectives of the work presented herein were to determine: 1. Changes in nitrogen species within the wastewater resulting from rapid infiltration-percolation and 2. Effects of both basin vegetative cover versus scarified surface and differential hydraulic loading rates on the nitrogen species within the effluent discharged from the pilot units

Erratum to: On the DJL conjecture for order 6

In this note an erratum is provided to the article “On the DJL conjecture for order 6” by Naomi Shaked-Monderer, published in Operators and Matrices 11(1), 2017, 71–88. We will demonstrate and correct two errors in this article. The first error is in the statement of a proposition, which omits a certain category of extreme matrices. The second error is in the proof of a lemma. Fortunately the lemma itself is correct, and in this note we will in fact show that a stronger result holds

Evaluation of Getting Ahead: the Symud Ymlaen/Moving Forward project Interim Report

The SY/MF project has been developed to target young care leavers and young people who have offended in Wales to enhance their chances of finding employment and accessing further learning or training. The project has been designed to reflect learning from other similar projects and take account of the complex range of needs often presented by young people who have offended and/or are in care – and who are rarely 'job ready'. It is to offer intensive, tailored support in the form of: pre-employability and basic skills training; a six month paid work placement for a minimum of 25 hours per week; and, mentor support. SY/MF is delivered through a consortium partnership led by homeless charity Llamau.This report presents the findings of an interim assessment of SY/MF during its first full year of operation, October 2013 to the end of September 2014. The interim evaluation largely focuses on understanding the processes put in place to deliver the project and whether services have been implemented as expected; it also begins to capture outcome information. A full evaluation will build on these findings and include an assessment of impact over the full project (please see Section 1 for full details of the evaluation approach and method)

The K-selected Butcher-Oemler Effect

[abridged] We investigate the Butcher-Oemler effect in a sample of K-selected galaxies in 33 clusters at 0.15 < z < 0.92. We attempt to duplicate the original Butcher-Oemler analysis as closely as possible given the characteristics of our data. We find that the infrared selected blue fractions are lower than those measured in the optical and that the trend with redshift is much weaker. Comparison with optical data in clusters in common with Butcher & Oemler (1984) shows that infrared selection is the primary difference between our study and optically selected samples. We suggest that the Butcher-Oemler effect is in large part due to a population of star-forming low mass galaxies which will evolve into dwarf galaxies. These early results point to the need for larger and deeper infrared samples of cluster galaxies to address this issueComment: 37 pages, 19 figures, ApJ accepted (vol 598 n1