3,035 research outputs found
The message framing of health communications : how to elicit higher intention to get an annual pap test ?
In an online experiment, women (N=209) were randomly exposed to a pamphlet promoting Pap test. The pamphlet was either gain- or loss-framed and emphasized either the prevention or detection function of the Pap. We hypothesized that the fit between framing and function (i.e. gain-prevention and loss-detection) will result in higher intention to follow the recommendation. Moreover, we predicted that under the non-fit condition (i.e. gain-detection and loss-prevention); people higher in perceived vulnerability will have higher intention to follow the recommendation. Analyses revealed that our hypotheses were partially supportedMarketing of health, health communication, message framing
Fermi acceleration along the orbit of {\eta} Carinae
The {\eta} Carinae binary system hosts the most massive stars with the
highest known mass-loss rate. Its dense wind encounters the faster wind
expelled by the companion, dissipating mechanical energy in the shock,
accelerating particles up to relativistic energies and producing high-energy
(HE) {\gamma}-rays. We used the first 7-year data of the Fermi LAT which span
two passages of {\eta} Carinae at periastron. We extracted low and HE light
curves and spectra in different orbital phase bins using the new PASS8
pipeline. We used particle acceleration in hydrodynamic simulations of the
system in a multi-cell geometry and compared the prediction with the
observations. The {\gamma}-ray emission location is compatible with {\eta}
Carinae. Two emission components are distinguished. The low-energy (LE) one
cuts off below 10 GeV and its flux, modulated by the orbital motion, varies by
a factor < 2. Short-term variability occurs at periastron. The HE component
flux varies by a factor 3-4 but differently during the two periastrons. The
variabilities observed at LE and HE during the first half of the observations,
match the prediction of the simulation, assuming a surface magnetic field of
500 G. The HE component and the thermal X-ray emission were weaker than
expected around the second periastron suggesting a modification of the wind
density in the inner wind collision region (WCR). Diffuse shock acceleration in
the WCR provides a convincing match to the observations and new diagnostic
tools to probe the geometry and energetics of the system. Further observations
are required to explain the periastron-to-periastron HE variability and to
associate it firmly with hadronic origin. {\eta} Carinae is a pevatron at
periastron. Its flux can be detected by IceCube after many years of
observations. Orbital modulations of the HE component can be distinguished from
those of photo absorption by CTA.Comment: 11 pages, 8 figure
A reference data access service in support of emergency management
In the field of natural disasters recovery and reduction and of emergency management georeferenced information is strongly needed. In my personal experience obtained in the three years period spent at ITHACA, during the shorter at GFDRR Labs and through the work done indirectly with UN-WFP, after a natural disaster occurs, the experts in geomatics are often asked to provide answers to questions such as: where did it occur? How many people have been involved? How many infrastructures have been damaged and to what extent? How much is the economical loss? Geomatics can give answer to all these questions or give significant help in addressing operations in order to get the answers. The goal can be reached both with the use of base reference data, the ones usually contained in the classic cartography, and by exploiting value added information coming from satellite and aerial data processing, classic surveys and GPS acquisition on the fiel
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