Kepler-22b: A 2.4 Earth-radius Planet in the Habitable Zone of a Sun-like Star

A search of the time-series photometry from NASA's Kepler spacecraft reveals a transiting planet candidate orbiting the 11th magnitude G5 dwarf KIC 10593626 with a period of 290 days. The characteristics of the host star are well constrained by high-resolution spectroscopy combined with an asteroseismic analysis of the Kepler photometry, leading to an estimated mass and radius of 0.970 +/- 0.060 MSun and 0.979 +/- 0.020 RSun. The depth of 492 +/- 10ppm for the three observed transits yields a radius of 2.38 +/- 0.13 REarth for the planet. The system passes a battery of tests for false positives, including reconnaissance spectroscopy, high-resolution imaging, and centroid motion. A full BLENDER analysis provides further validation of the planet interpretation by showing that contamination of the target by an eclipsing system would rarely mimic the observed shape of the transits. The final validation of the planet is provided by 16 radial velocities obtained with HIRES on Keck 1 over a one year span. Although the velocities do not lead to a reliable orbit and mass determination, they are able to constrain the mass to a 3{\sigma} upper limit of 124 MEarth, safely in the regime of planetary masses, thus earning the designation Kepler-22b. The radiative equilibrium temperature is 262K for a planet in Kepler-22b's orbit. Although there is no evidence that Kepler-22b is a rocky planet, it is the first confirmed planet with a measured radius to orbit in the Habitable Zone of any star other than the Sun.Comment: Accepted to Ap

Re-examining the deployment of market orientation in the public leisure sector

Author Posting © Westburn Publishers Ltd, 2012. This is a post-peer-review, pre-copy-edit version of an article which has been published in its definitive form in the Journal of Marketing Management, and has been posted by permission of Westburn Publishers Ltd for personal use, not for redistribution. The article was published in Journal of Marketing Management, 28, 2012,11-12, pp. 1249-1269, doi: 10.1080/0267257X.2011.645857, http://dx.doi.org/10.1080/0267257X.2011.645857This paper examines the moderating effects of market orientation's intelligence generation and dissemination components on the response-performance relationship. We offer valuable insight into the application of, and subsequent returns to, market orientation in the public leisure sector, thereby helping to broaden the appeal, relevance, and usefulness of this important marketing theory to other contexts. The research involved a national survey questionnaire to 1060 public leisure managers of local government leisure facilities in England. Empirical testing through structural equation modelling revealed two important findings. First, intelligence generation efforts of the organisation can in part affect the performance returns to an organisation from its responsiveness to market intelligence. Second, intelligence generation coupled with organisation-wide dissemination of intelligence can have a destructive impact on the response-performance relationship, demonstrated by a negative significant moderating impact on this relationship. This paper provides an alternative explanation to the deployment of market orientation as a means to create value and an explanation that transcends its current linear portrayal in public-service delivery. © 2012 Copyright 2012 Westburn Publishers Ltd

Mobile Graphic-based Communication: Investigating Reminder Notifications to Support Tuberculosis Treatment in Africa

Visual communication is a method of communication using visual elements, which is suggested to be more effective than text or voice, and has the additional advantage that it, can also be used by who are unable to read. In this paper, the findings of a user requirements study, which was conducted at MnaziMmoja Hospital in Zanzibar, are presented. In a cross-sectional study, twenty nine people including TB patients and TB Health care workers were interviewed. The findings show that participants agreed that the use of mobile graphic-based communications could support TB patients in their treatment. The contribution of this work is the process to investigate and develop a new mobile graphic-based application for push notification services that are literacy-level and language agnostic

Pion contamination in the MICE muon beam

The international Muon Ionization Cooling Experiment (MICE) will perform a systematic investigation of ionization cooling with muon beams of momentum between 140 and 240\,MeV/c at the Rutherford Appleton Laboratory ISIS facility. The measurement of ionization cooling in MICE relies on the selection of a pure sample of muons that traverse the experiment. To make this selection, the MICE Muon Beam is designed to deliver a beam of muons with less than $\sim$1\% contamination. To make the final muon selection, MICE employs a particle-identification (PID) system upstream and downstream of the cooling cell. The PID system includes time-of-flight hodoscopes, threshold-Cherenkov counters and calorimetry. The upper limit for the pion contamination measured in this paper is $f_\pi < 1.4\%$ at 90\% C.L., including systematic uncertainties. Therefore, the MICE Muon Beam is able to meet the stringent pion-contamination requirements of the study of ionization cooling.Department of Energy and National Science Foundation (U.S.A.), the Instituto Nazionale di Fisica Nucleare (Italy), the Science and Technology Facilities Council (U.K.), the European Community under the European Commission Framework Programme 7 (AIDA project, grant agreement no. 262025, TIARA project, grant agreement no. 261905, and EuCARD), the Japan Society for the Promotion of Science and the Swiss National Science Foundation, in the framework of the SCOPES programme