CAST constraints on the axion-electron coupling

In non-hadronic axion models, which have a tree-level axion-electron interaction, the Sun produces a strong axion flux by bremsstrahlung, Compton scattering, and axiorecombination, the "BCA processes." Based on a new calculation of this flux, including for the first time axio-recombination, we derive limits on the axion-electron Yukawa coupling gae and axion-photon interaction strength ga using the CAST phase-I data (vacuum phase). For ma <~ 10 meV/c2 we find ga gae < 8.1 × 10−23 GeV−1 at 95% CL. We stress that a next-generation axion helioscope such as the proposed IAXO could push this sensitivity into a range beyond stellar energy-loss limits and test the hypothesis that white-dwarf cooling is dominated by axion emission

Einschließen oder aufmachen? der Raum, sein Kapital und seine Nutzer

Otto H-U, Kessl F, Ziegler H. Einschließen oder aufmachen? der Raum, sein Kapital und seine Nutzer. In: Riege M, Schubert H, eds. Sozialraumanalyse - Grundlagen Methoden Praxis. Opladen; 2002: 177-190

Development, feasibility and performance of a health risk appraisal questionnaire for older persons

<p>Abstract</p> <p>Background</p> <p>Health risk appraisal is a promising method for health promotion and prevention in older persons. The Health Risk Appraisal for the Elderly (HRA-E) developed in the U.S. has unique features but has not been tested outside the United States.</p> <p>Methods</p> <p>Based on the original HRA-E, we developed a scientifically updated and regionally adapted multilingual Health Risk Appraisal for Older Persons (HRA-O) instrument consisting of a self-administered questionnaire and software-generated feed-back reports. We evaluated the practicability and performance of the questionnaire in non-disabled community-dwelling older persons in London (U.K.) (N = 1090), Hamburg (Germany) (N = 804), and Solothurn (Switzerland) (N = 748) in a sub-sample of an international randomised controlled study.</p> <p>Results</p> <p>Over eighty percent of invited older persons returned the self-administered HRA-O questionnaire. Fair or poor self-perceived health status and older age were correlated with higher rates of non-return of the questionnaire. Older participants and those with lower educational levels reported more difficulty in completing the HRA-O questionnaire as compared to younger and higher educated persons. However, even among older participants and those with low educational level, more than 80% rated the questionnaire as easy to complete. Prevalence rates of risks for functional decline or problems were between 2% and 91% for the 19 HRA-O domains. Participants' intention to change health behaviour suggested that for some risk factors participants were in a pre-contemplation phase, having no short- or medium-term plans for change. Many participants perceived their health behaviour or preventative care uptake as optimal, despite indications of deficits according to the HRA-O based evaluation.</p> <p>Conclusion</p> <p>The HRA-O questionnaire was highly accepted by a broad range of community-dwelling non-disabled persons. It identified a high number of risks and problems, and provided information on participants' intention to change health behaviour.</p

Systems constellations : A better way to identify branding opportunities?

Contains fulltext : 46286.pdf (publisher's version ) (Closed access)Building strong brands has become one of the main marketing priorities for brand-supportive companies. The leading positivist paradigm in marketing may not be, however, the most-effective perspective in identifying branding opportunities. This paper offers an alternative phenomenological point of view by applying the innovative systems constellation technique within the soft systems methodology to identify new branding opportunities. A case study illustrates its content validity but also shows there is limited support for its reliability, which is in line with the positivists' reservation on phenomenological methods and techniques.1 p