163 research outputs found

    Implicit and explicit risk perception, affect, and trust : an investigation of food "traffic lights"

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    Obesity is a health problem in many developed countries and is a growing problem worldwide. In an effort to improve food choices the "traffic lights" nutritional labelling system has been developed. This system informs consumers of the relative (low, medium, high) levels of fat, saturated fats, sugar, and salt, along with energy information. There is debate over what type of thought processing drives perceptions of affect (or emotion) and risk regarding food products. These are System 1 (quick, intuitive) processing and System 2 (slower, deliberative) processing. In order to capture data on both types of processing, we used explicit and implicit measures (we developed an implicit measure of risk for this study). We also investigated the relationships of risk with affect, and trust. The results showed the presence of food "traffic lights" sometimes influenced both risk and affect perceptions but this was more pronounced for explicit measures. We also found that high risk was associated with negative affect, and low risk with positive affect, with larger effects when the “traffic lights” were present. We concluded that "traffic lights" can influence risk perception at both explicit and implicit levels but the influence was stronger if either the risk information was clear or the person was consciously evaluating the risk. Future research was discussed

    Electronic adverse incident reporting in hospitals

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    The purpose of this study was to assess attitudes toward and use of an electronic adverse incident reporting system in all four hospitals in one NHS Scotland Health Board area. A questionnaire was used to assess Medical Consultants', Managers', and Nurses' attitudes and perceptions about electronic adverse incident reporting. Actual adverse incident reporting data were also analysed. The main findings from this study are that Consultants, Managers, and Nurses all had positive attitudes about responsibility for reporting adverse incidents. All respondents indicated that the design of and information collected by the electronic adverse incident reporting system (DATIX) was adequate but Consultants had more negative attitudes and perceptions than Managers and Nurses about DATIX. All respondents expressed negative attitudes about the amount and type of feedback they receive from reporting, and Consultants expressed more negative attitudes about how DATIX is managed than Managers and Nurses. Analysis of adverse incident reporting data found that the proportion of Consultants using DATIX to report incidents was significantly lower than that of Managers and Nurses. The findings suggest that there are no additional barriers to incident reporting associated with the use of a bespoke electronic adverse incident reporting system as compared to other types of systems. Although an electronic adverse incident reporting system may be able to increase incident reporting and facilitate organisational learning by making it easier to report incidents and analyse incident reporting data, strong leadership within hospitals / healthcare professions (or healthcare subcultures) is still required in order to promote and sustain incident reporting to improve patient safety

    'Cyber gurus' : a rhetorical analysis of the language of cybersecurity specialists and the implications for security policy and critical infrastructure protection

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    This paper draws on the psychology of risk and "management guru" literature (Huczynski, 2006) to examine how cybersecurity risks are constructed and communicated by cybersecurity specialists. We conduct a rhetorical analysis of ten recent cybersecurity publications ranging from popular media to academic and technical articles. We find most cybersecurity specialists in the popular domain use management guru techniques and manipulate common cognitive limitations in order to over-dramatize and over-simplify cybersecurity risks to critical infrastructure (CI). We argue there is a role for government: to collect, validate and disseminate more data among owners and operators of CI; to adopt institutional arrangements with an eye to moderating exaggerated claims; to reframe the debate as one of trade-offs between threats and opportunities as opposed to one of survival; and, finally, to encourage education programs in order to stimulate a more informed debate over the longer term

    Multi-core cyclic executives for safety-critical systems

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    In a cyclic executive, a series of pre-determined frames are executed in sequence; once the series is complete the sequence is repeated. Within each frame individual units of computation are executed, again in a pre-specified sequence. Although they suffer from a number of limitations, cyclic executives have the advantage of being fully deterministic, and may be implemented with very low runtime overhead; as a consequence of these advantages, run-time schedulers in highly safety-critical real-time systems have historically been implemented as cyclic executives. Industrial applications of the cyclic executive framework are currently primarily restricted to uniprocessor platforms; in this paper, we consider the implementation of cyclic executives upon multi-core platforms. We present a Linear Programming (LP) based formulation of the problem of constructing cyclic executives upon multiprocessors for a particular kind of recurrent real-time workload — collections of implicit-deadline periodic tasks. We describe techniques for solving the LP formulation under different kinds of restrictions in order to obtain preemptive and non-preemptive cyclic executives. Our algorithms for constructing preemptive cyclic executives have running time polynomial in the size of the cyclic executive. We present an exact algorithm for constructing non-preemptive cyclic executives that has worst-case running time exponential in the size of the cyclic executive; however, state-of-the-art LP solvers appear to often be able to construct fairly large cyclic executives in a reasonable amount of time. We also present an approximation algorithm for constructing non-preemptive cyclic executives that does run in polynomial time, and evaluate the effectiveness of this approximation algorithm both theoretically via the speedup factor metric, and experimentally via experiments on synthetically generated workloads. We additionally identify a particular restricted kind of workload that is quite commonly found in practice, for which non-preemptive cyclic executives can be constructed more efficiently than in the general case

    Management of Monophasic Synovial Sarcoma of the Small Intestine

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    Although prognosis for patients with intraabdominal synovial sarcoma is poor, laparoscopic wide regional excision may allow for a more prolonged disease-free survival

    Why some health and social care workers resisted compulsory COVID vaccination

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    The UK planned to make COVID vaccination compulsory for frontline NHS and social care staff, but ultimately did not. Sian Moore (University of Greenwich), Christina Clamp (Southern New Hampshire University), and Eklou R Amendah (University of Southern Maine) and colleagues look at vaccine hesitancy among this group in the UK and US, many of whom are BME, and how employers and trade unions tackled it

    Radiolysis of water ice in the outer solar system: Sputtering and trapping of radiation products

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    We performed quantitative laboratory radiolysis experiments on cubic water ice between 40 and 120 K, with 200 keV protons. We measured sputtering of atoms and molecules and the trapping of radiolytic molecular species. The experiments were done at fluences corresponding to exposure of the surface of the Jovian icy satellites to their radiation environment up to thousands of years. During irradiation, O2 molecules are ejected from the ice at a rate that grows roughly exponentially with temperature; this behavior is the main reason for the temperature dependence of the total sputtering yield. O2 trapped in the ice is thermally released from the ice upon warming; the desorbed flux starts at the irradiation temperature and increases strongly above 120 K. Several peaks in the desorption spectrum, which depend on irradiation temperature, point to a complex distribution of trapping sites in the ice matrix. The yield of O2 produced by the 200 keV protons and trapped in the ice is more than 2 orders of magnitude smaller than used in recent models of Ganymede. We also found small amounts of trapped H2O2 that desorb readily above 160 K.Fil: Bahr, D.A.. University of Virginia; Estados UnidosFil: Famá, M.. University of Virginia; Estados UnidosFil: Vidal, Ricardo Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; ArgentinaFil: Baragiola, Raul Antonio. University of Virginia; Estados Unido

    The Atacama Cosmology Telescope: Cosmology from Galaxy Clusters Detected via the Sunyaev-Zel'dovich Effect

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    We present constraints on cosmological parameters based on a sample of Sunyaev-Zel'dovich-selected galaxy clusters detected in a millimeter-wave survey by the Atacama Cosmology Telescope. The cluster sample used in this analysis consists of 9 optically-confirmed high-mass clusters comprising the high-significance end of the total cluster sample identified in 455 square degrees of sky surveyed during 2008 at 148 GHz. We focus on the most massive systems to reduce the degeneracy between unknown cluster astrophysics and cosmology derived from SZ surveys. We describe the scaling relation between cluster mass and SZ signal with a 4-parameter fit. Marginalizing over the values of the parameters in this fit with conservative priors gives sigma_8 = 0.851 +/- 0.115 and w = -1.14 +/- 0.35 for a spatially-flat wCDM cosmological model with WMAP 7-year priors on cosmological parameters. This gives a modest improvement in statistical uncertainty over WMAP 7-year constraints alone. Fixing the scaling relation between cluster mass and SZ signal to a fiducial relation obtained from numerical simulations and calibrated by X-ray observations, we find sigma_8 = 0.821 +/- 0.044 and w = -1.05 +/- 0.20. These results are consistent with constraints from WMAP 7 plus baryon acoustic oscillations plus type Ia supernoava which give sigma_8 = 0.802 +/- 0.038 and w = -0.98 +/- 0.053. A stacking analysis of the clusters in this sample compared to clusters simulated assuming the fiducial model also shows good agreement. These results suggest that, given the sample of clusters used here, both the astrophysics of massive clusters and the cosmological parameters derived from them are broadly consistent with current models.Comment: 12 pages, 7 figures. Submitted to Ap

    Ancient hydrothermal seafloor deposits in Eridania basin on Mars

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    Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/ licenses/by/4.0/. The file attached is the Published/publisher’s pdf version of the article

    Reducing Implicit Racial Preferences: II Intervention Effectiveness Across Time

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    Implicit preferences are malleable, but does that change last? We tested 9 interventions (8 real and 1 sham) to reduce implicit racial preferences over time. In 2 studies with a total of 6,321 participants, all 9 interventions immediately reduced implicit preferences. However, none were effective after a delay of several hours to several days. We also found that these interventions did not change explicit racial preferences and were not reliably moderated by motivations to respond without prejudice. Short-term malleability in implicit preferences does not necessarily lead to long-term change, raising new questions about the flexibility and stability of implicit preferences. (PsycINFO Database Recor
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