Dielectronic recombination of W^20+ (4d^10 4f^8): addressing the half-open f-shell

A recent measurement of the dielectronic recombination (DR) of W^20+ [Schippers et al Phys. Rev. A83, 012711 (2011)] found an exceptionally large contribution from near threshold resonances (<1eV). This still affected the Maxwellian rate coefficient at much higher temperatures. The experimental result was found to be a factor 4 or more than that currently in use in the 100-300eV range which is of relevance for modeling magnetic fusion plasmas. We have carried-out DR calculations with AUTOSTRUCTURE which include all significant single electron promotions. Our intermediate coupling (IC) results are more than a factor of 4 larger than our LS-coupling ones at 1eV but still lie a factor 3 below experiment here. If we assume complete (chaotic) mixing of near-threshold autoionizing states then our results come into agreement (to within 20%) with experiment below about 2eV. Our total IC Maxwellian rate coefficients are 50-30% smaller than those based-on experiment over 100-300eV.Comment: 10 pages, 8 figures, submitted to Phys.Rev.

The effects of label design characteristics on perceptions of genetically modified food

Objective. To explore the effects on perceptions of labelling food for genetically modified content. Background: there is increasing public pressure for the compulsory labelling of genetically modified food content on all food products, and yet little is known about how the design and content of such food labels will influence product perceptions. The current research draws upon warning label research - a field in which the effect of label design manipulations on perceptions of, and responses to, potential or perceived risks is well documented. Method. Two experiments are reported that investigate how label design features influence the perception of genetically modified foods. The effects of label colour (red, blue and green), wording style (definitive vs. probabilistic and explicit vs. non-explicit) and information source (government agency, consumer group and manufacturer) on hazard perceptions and purchase intentions were measured. Results. Hazard perceptions and purchase intentions were both influenced by label design characteristics in predictable ways. Any reference to genetic modification, even if the label is stating that the product is free of genetically modified ingredients, increased hazard perception, and decreased purchase intentions, relative to a no-label condition. Conclusion. Label design effects generalise from warning label research to influence the perception of genetically modified foods in predictable ways. Application. The design of genetically modified food labels. © 2012 Copyright Taylor and Francis Group, LLC

Whistle while you Work? Disney Animation, Organizational Readiness and Gendered Subjugation

This paper introduces the concept of ‘organizational readiness’: socio-cultural expectations about working selves that prepare young people (albeit indirectly and in complex and multi-faceted ways) for their future life in organizations. This concept emerges from an analysis of Disney animations and how they constitute expectations about working life that may influence children through their representations of work and gendered workplace roles. The paper’s exploration of Disney’s earlier animations suggests they circulated norms of gender that girls should be weak and avoid work. In contrast, its contemporary productions circulate gender norms that suggest girls should be strong and engage in paid work. In this reading, the continued circulation of earlier alongside contemporary animations may convey to young viewers a paradox: girls must and must not work; they must be both weak and strong. We thus offer new insights into the puzzle of the continued relegation of women to the sidelines in organizations; more optimistically, we also point to ways in which future generations of employees may forge ways of constituting forms of gendered selves as yet hardly imaginable

Organizational Readiness: Culturally Mediated Learning Through Disney Animation

This article develops the notion of organizational readiness, a construct that describes the anticipatory expectations about future organizational life that children develop as they imbibe the cultural influences to which they are exposed. We conduct our analyses through an exploration of the depictions of work in Disney's 56 'Classic' feature-length animations (from Snow White and the Seven Dwarfs [1937] to Moana [2016]). We can, of course, make no direct cause and effect claims about the effects of the animations. However, we argue that Disney animations are likely to shape children's learning about organizations significantly. This is because the Disney animated canon regularly provides children with consistent and vivid impressions of the nature of working life; impressions that will have important implications for them, and the staff who teach them, when they eventually enter business schools as undergraduates

Mediating a Global Capitalist, Speciesist Moral Vacuum: How Two Escaped Pigs disrupted Dyson Appliances’ State of Nature

In 1998, two Tamworth Ginger pigs escaped on-route to slaughter, remaining fugitive for over a week on Dyson Appliances’ land in Malmesbury, Wiltshire, England, the United Kingdom. Dyson factory workers helped search for them, and media interest was global. National UK newspaper The Daily Mail bought the animals, preventing their slaughter. Whilst two pigs dubbed “Butch” and “Sundance” were publicly “saved,” slaughter continued in private, justified as “natural.” Dyson Appliance’s subsequent decision to sack all 800 Malmesbury vacuum-cleaner production staff was likewise reported as an inevitable, natural consequence of the market. The Press Gazette voted The Daily Mail’s coverage of the Tamworth two the greatest British media scoop of all time. Adopting a Critical Animal Media Studies lens, we explore the contradictions and connections between moral identification in UK media framing of Malmesbury’s animal escape story, moral invisibility of animal-slaughter in general, and reporting of the factory’s closure as a global capitalist state of nature’s “inevitable” and “natural” consequence

Photoionization and Photoelectric Loading of Barium Ion Traps

Simple and effective techniques for loading barium ions into linear Paul traps are demonstrated. Two-step photoionization of neutral barium is achieved using a weak intercombination line (6s2 1S0 6s6p 3P1, 791 nm) followed by excitation above the ionization threshold using a nitrogen gas laser (337 nm). Isotopic selectivity is achieved by using a near Doppler-free geometry for excitation of the triplet 6s6p 3P1 state. Additionally, we report a particularly simple and efficient trap loading technique that employs an in-expensive UV epoxy curing lamp to generate photoelectrons.Comment: 5 pages, Accepted to PRA 3/20/2007 -fixed typo -clarified figure 3 caption -added reference [15

Superfluid density and condensate fraction in the BCS-BEC crossover regime at finite temperatures

The superfluid density is a fundamental quantity describing the response to a rotation as well as in two-fluid collisional hydrodynamics. We present extensive calculations of the superfluid density \rho_s in the BCS-BEC crossover regime of a uniform superfluid Fermi gas at finite temperatures. We include strong-coupling or fluctuation effects on these quantities within a Gaussian approximation. We also incorporate the same fluctuation effects into the BCS single-particle excitations described by the superfluid order parameter \Delta and Fermi chemical potential \mu, using the Nozi\`eres and Schmitt-Rink (NSR) approximation. This treatment is shown to be necessary for consistent treatment of \rho_s over the entire BCS-BEC crossover. We also calculate the condensate fraction N_c as a function of the temperature, a quantity which is quite different from the superfluid density \rho_s. We show that the mean-field expression for the condensate fraction N_c is a good approximation even in the strong-coupling BEC regime. Our numerical results show how \rho_s and N_c depend on temperature, from the weak-coupling BCS region to the BEC region of tightly-bound Cooper pair molecules. In a companion paper by the authors (cond-mat/0609187), we derive an equivalent expression for \rho_s from the thermodynamic potential, which exhibits the role of the pairing fluctuations in a more explicit manner.Comment: 32 pages, 12 figure

Researching DIY Cultures: Towards a Situated Ethical Practice for Activist-Academia

The empirical study of DIY culture and feminist cultural activism is a flourishing interdisciplinary research area particularly in the USA, Canada, Australia and UK. This has enabled a growth in participant-researchers doing research on their own DIY cultures and activist communities of belonging. Tensions occur here for the participant-researcher in relation to conventional data collection methods, ethical and moral decisions and modes of research dissemination. This article develops discussions of dilemmas experienced by the authors during doctoral research projects on DIY punk, roller derby and queer feminist music cultures. We detail the possibilities and tensions met when the participant-researcher encounters existing subcultural theories, ethical codes of practice, data collection methods and the dissemination of academic research. In addition we offer insights into the under-documented emotional impacts and moments of crisis the participant-researcher needs to attend to when carrying out research with/in personal and political communities of belonging. In conclusion, we offer a series of recommendations for a situated ethical practice for research with/in DIY cultures in relation to engaged data generation