66 research outputs found
Highlighting tensions in recruitment and selection research and practice
In this article we highlight five tensions that exist in recruitment and selection (R&S) research and practice today and that are centered around the 'efficiency press' and so called 'research-practice' gap. Identified tensions are desires for (1) innovation and efficiency, (2) customization and consistency, (3) transparency and effectiveness, (4) wide-reach and coherence, and (5) diversity and standardization. Each tension is illustrated with findings from the five studies of this Special Issue that were presented at the third meeting of the European Network of Selection Researchers (August 2014), and supplemented with empirical data on the research-practice gap in R&S (period 2009-2013). We consider how we might move forward in addressing the 'efficiency press' in research as well as managing these tensions in practice
Exploring phase coherence in a 2D lattice of Bose-Einstein condensates
Bose-Einstein condensates of rubidium atoms are stored in a two-dimensional
periodic dipole force potential, formed by a pair of standing wave laser
fields. The resulting potential consists of a lattice of tightly confining
tubes, each filled with a 1D quantum gas. Tunnel-coupling between neighboring
tubes is controlled by the intensity of the laser fields. By observing the
interference pattern of atoms released from more than 3000 individual lattice
tubes the phase coherence of the coupled quantum gases is studied. The lifetime
of the condensate in the lattice and the dependence of the interference pattern
on the lattice configuration are investigated.Comment: 4 pages, 6 figure
Decoherence of Bose-Einstein condensates in traps at finite temperature
The phase diffusion of the order parameter of trapped Bose-Einstein
condensates at temperatures large compared to the mean trap frequency is
determined, which gives the fundamental limit of the line-width of an atom
laser. In addition a prediction of the correlation time of the number
fluctuations in the condensate is made and related to the phase diffusion via
the fluctuation-dissipation relation.Comment: 4 pages Revtex, revised version, to appear in Phys. Rev. Letter
Metagenomic Analysis of Regularly Microwave-Treated and Untreated Domestic Kitchen Sponges
Kitchen sponges massively absorb and spread microorganisms, leading to contamination of kitchen appliances, surfaces, and food. Microwaving as an effective and widespread technique can rapidly reduce the microbial load of kitchen sponges. However, long-term effects of such treatments are largely unknown. Notably, it has been speculated that regularly applied domestic cleaning and disinfection may select for microbial communities with a higher pathogenic potential and/or malodorous properties. In this study, we distributed newly purchased polyurethane kitchen sponges to 20 participants, with the instruction to use them under normal household conditions for four weeks. Ten of the participants sanitized their sponges regularly by a standardized microwaving protocol, while the remaining ten sponges remained untreated. Metagenomic sequence data evaluation indicated that, in addition to bacteria, viruses, eukaryotes, and archaea were also part of the kitchen sponge microbiome. Comparisons of sanitized and untreated kitchen sponges indicated a trend towards a reduced structural microbial diversity while functional diversity increased. Microwave sanitization appeared to alter composition and metabolic properties of the microbial communities. Follow-up studies will have to show whether these changes are more positive or negative in terms of domestic hygiene, human health, and well-being
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