350 research outputs found
Large emergency-response exercises: qualitative characteristics - a survey
Exercises, drills, or simulations are widely used, by governments, agencies and commercial organizations, to simulate serious incidents and train staff how to respond to them. International cooperation has led to increasingly large-scale exercises, often involving hundreds or even thousands of participants in many locations. The difference between ‘large’ and ‘small’ exercises is more than one of size: (a) Large exercises are more ‘experiential’ and more likely to undermine any model of reality that single organizations may create; (b) they create a ‘play space’ in which organizations and individuals act out their own needs and identifications, and a ritual with strong social implications; (c) group-analytic psychotherapy suggests that the emotions aroused in a large group may be stronger and more difficult to control. Feelings are an unacknowledged major factor in the success or failure of exercises; (d) successful large exercises help improve the nature of trust between individuals and the organizations they represent, changing it from a situational trust to a personal trust; (e) it is more difficult to learn from large exercises or to apply the lessons identified; (f) however, large exercises can help develop organizations and individuals. Exercises (and simulation in general) need to be approached from a broader multidisciplinary direction if their full potential is to be realized
Biomass-modulated fire dynamics during the last glacial-interglacial transition at the central pyrenees (Spain)
Understanding long-term fire ecology is essential for current day interpretation of ecosystem fire responses. However palaeoecology of fire is still poorly understood, especially at high-altitude mountain environments, despite the fact that these are fire-sensitive ecosystems and their resilience might be affected by changing fire regimes. We reconstruct wildfire occurrence since the Lateglacial (14.7. cal. ka BP) to the Mid-Holocene (6. cal. ka BP) and investigate the climate-fuel-fire relationships in a sedimentary sequence located at the treeline in the Central Spanish Pyrenees. Pollen, macro- and micro-charcoal were analysed for the identification of fire events (FE) in order to detect vegetation post-fire response and to define biomass-fire interactions. mean fire intervals (mfi) reduced since the Lateglacial, peaking at 9-7.7. cal. ka BP while from 7.7 to 6. cal. ka BP no fire is recorded. We hypothesise that Early Holocene maximum summer insolation, as climate forcing, and mesophyte forest expansion, as a fuel-creating factor, were responsible for accelerating fire occurrence in the Central Pyrenees treeline. We also found that fire had long-lasting negative effects on most of the treeline plant communities and that forest contraction from 7.7. cal. ka BP is likely linked to the ecosystem's threshold response to high fire frequencies.This research has been funded by the projects DINAMO (CGL2009-07992) (funding EGPF — grant ref. BES-2010-038593 and MSC), DINAMO2 (CGL2012-33063), ARAFIRE (2012 GA LC 064), GRACCIE-CONSOLIDER (CSD2007-00067). GGR was funded by the Juan de la Cierva Program (grant ref. JCI2009-04345) and JAE-Doc CSIC Program, LLM was supported by a postdoctoral MINT fellowship funded by the Institute for the Environment (Brunel University), AMC is a Ramón y Cajal fellow (ref: RYC-2008-02431), APS holds a grant funded by the Aragon Government (ref. 17030G/5423/480072/14003) and JAE holds a grant funded by the Basque Country Government (BFI-2010-5)
Formation and evolution of early-type galaxies. II. Models with quasi-cosmological initial conditions
In this study, with the aid of N-Body simulations based on quasi-cosmological
initial conditions, we have followed the formation and evolution of two models
of early-type galaxies, from their separation from global expansion of the
Universe to their collapse to virialized structures, the formation of stars and
subsequent nearly passive evolution. The cosmological background we have
considered is the Standard CDM. The models have significantly different nitial
total mass. Particular care has been paid to the star formation process,
heating and cooling of gas, and chemical enrichment. In both models star
formation is completed within the first Gyrs of evolution. The structural
properties of the present-day models are in good agreement with current
observations. The chemical properties, mean metallicity and metallicity
gradients also agree with available observational data. Finally, conspicuous
galactic winds are found to occur. The models conform to the so-called revised
monolithic scheme, because mergers of substructures have occurred very early in
the galaxy life. Our results agree with those obtained in other similar recent
studies, thus strengthening the idea that the revised monolithic scheme is the
right trail to follow in the forest of galaxy formation and evolution.Comment: 21 pages, 19 figures, 3 tables. To be published on Astronomy &
Astrophysics (accepted April 12, 2006
Caring for quality of care: symbolic violence and the bureaucracies of audit.
BACKGROUND: This article considers the moral notion of care in the context of Quality of Care discourses. Whilst care has clear normative implications for the delivery of health care it is less clear how Quality of Care, something that is centrally involved in the governance of UK health care, relates to practice. DISCUSSION: This paper presents a social and ethical analysis of Quality of Care in the light of the moral notion of care and Bourdieu's conception of symbolic violence. We argue that Quality of Care bureaucracies show significant potential for symbolic violence or the domination of practice and health care professionals. This generates problematic, and unintended, consequences that can displace the goals of practice. SUMMARY: Quality of Care bureaucracies may have unintended consequences for the practice of health care. Consistent with feminist conceptions of care, Quality of Care 'audits' should be reconfigured so as to offer a more nuanced and responsive form of evaluation
Carbon Sequestration in Biogenic Magnesite and Other Magnesium Carbonate Minerals
The stability and longevity of carbonate minerals make them an ideal sink for surplus atmospheric carbon dioxide. Biogenic magnesium carbonate mineral precipitation from the magnesium-rich tailings generated by many mining operations could offset net mining greenhouse gas emissions, while simultaneously giving value to mine waste products. In this investigation, cyanobacteria in a wetland bioreactor enabled the precipitation of magnesite (MgCO3), hydromagnesite [Mg5(CO3)4(OH)2·4H2O], and dypingite [Mg5(CO3)4(OH)2·5H2O] from a synthetic wastewater comparable in chemistry to what is produced by acid leaching of ultramafic mine tailings. These precipitates occurred as micrometer-scale mineral grains and microcrystalline carbonate coatings that entombed filamentous cyanobacteria. This provides the first laboratory demonstration of low temperature, biogenic magnesite precipitation for carbon sequestration purposes. These findings demonstrate the importance of extracellular polymeric substances in microbially enabled carbonate mineral nucleation. Fluid composition was monitored to determine carbon sequestration rates. The results demonstrate that up to 238 t of CO2 could be stored per hectare of wetland/year if this method of carbon dioxide sequestration was implemented at an ultramafic mine tailing storage facility. The abundance of tailings available for carbonation and the anticipated global implementation of carbon pricing make this method of mineral carbonation worth further investigation
A Conceptual Framework for Healthy Eating Behavior in Ecuadorian Adolescents: A Qualitative Study
Objective: The objective of this study was to identify factors influencing eating behavior of Ecuadorian adolescents - from
the perspective of parents, school staff and adolescents - to develop a conceptual framework for adolescents’ eating
behavior.
Study design: Twenty focus groups (N = 144 participants) were conducted separately with adolescents aged 11–15 y (n
(focus groups) = 12, N (participants) = 80), parents (n = 4, N = 32) and school staff (n = 4, N = 32) in rural and urban Ecuador.
A semi-structured questioning route was developed based on the ‘Attitude, Social influences and Self-efficacy’ model and
the socio-ecological model to assess the relevance of behavioral and environmental factors in low- and middle-income
countries. Two researchers independently analyzed verbatim transcripts for emerging themes, using deductive thematic
content analysis. Data were analyzed using NVivo 8.
Results: All groups recognized the importance of eating healthily and key individual factors in Ecuadorian adolescents’ food
choices were: financial autonomy, food safety perceptions, lack of self-control, habit strength, taste preferences and
perceived peer norms. Environmental factors included the poor nutritional quality of food and its easy access at school. In
their home and family environment, time and convenience completed the picture as barriers to eating healthily. Participants
acknowledged the impact of the changing socio-cultural environment on adolescents’ eating patterns. Availability of
healthy food at home and financial constraints differed between settings and socio-economic groups.
Conclusion: Our findings endorse the importance of investigating behavioral and environmental factors that influence and
mediate healthy dietary behavior prior to intervention development. Several culture-specific factors emerged that were
incorporated into a conceptual framework for developing health promotion interventions in Ecuador
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Detection and attribution of human influence on regional precipitation
Understanding how human influence on climate is affecting precipitation around the world is immensely important for defining mitigation policies, and for adaptation planning. Yet despite increasing evidence for the influence of climate change on global patterns of precipitation, and expectations that significant changes in regional precipitation should have already occurred as a result of human influence on climate, compelling evidence of anthropogenic fingerprints on regional precipitation is obscured by observational and modelling uncertainties and is likely to remain so using current methods for years to come. This is in spite of substantial ongoing improvements in models, new reanalyses and a satellite record that spans over thirty years. If we are to quantify how human-induced climate change is affecting the regional water cycle, we need to consider novel ways of identifying the effects of natural and anthropogenic influences on precipitation that take full advantage of our physical expectations
The effect of a supplementary ('Gist-based') information leaflet on colorectal cancer knowledge and screening intention: a randomized controlled trial.
Guided by Fuzzy Trace Theory, this study examined the impact of a 'Gist-based' leaflet on colorectal cancer screening knowledge and intentions; and tested the interaction with participants' numerical ability. Adults aged 45-59 years from four UK general practices were randomly assigned to receive standard information ('The Facts', n = 2,216) versus standard information plus 'The Gist' leaflet (Gist + Facts, n = 2,236). Questionnaires were returned by 964/4,452 individuals (22 %). 82 % of respondents reported having read the information, but those with poor numeracy were less likely (74 vs. 88 %, p < .001). The 'Gist + Facts' group were more likely to reach the criterion for adequate knowledge (95 vs. 91 %; p < .01), but this was not moderated by numeracy. Most respondents (98 %) intended to participate in screening, with no group differences and no interaction with numeracy. The improved levels of knowledge and self-reported reading suggest 'The Gist' leaflet may increase engagement with colorectal cancer screening, but ceiling effects reduced the likelihood that screening intentions would be affected
Genome-wide meta-analysis identifies six novel loci associated with habitual coffee consumption.
Coffee, a major dietary source of caffeine, is among the most widely consumed beverages in the world and has received considerable attention regarding health risks and benefits. We conducted a genome-wide (GW) meta-analysis of predominately regular-type coffee consumption (cups per day) among up to 91 462 coffee consumers of European ancestry with top single-nucleotide polymorphisms (SNPs) followed-up in ~30 062 and 7964 coffee consumers of European and African-American ancestry, respectively. Studies from both stages were combined in a trans-ethnic meta-analysis. Confirmed loci were examined for putative functional and biological relevance. Eight loci, including six novel loci, met GW significance (log10Bayes factor (BF)>5.64) with per-allele effect sizes of 0.03-0.14 cups per day. Six are located in or near genes potentially involved in pharmacokinetics (ABCG2, AHR, POR and CYP1A2) and pharmacodynamics (BDNF and SLC6A4) of caffeine. Two map to GCKR and MLXIPL genes related to metabolic traits but lacking known roles in coffee consumption. Enhancer and promoter histone marks populate the regions of many confirmed loci and several potential regulatory SNPs are highly correlated with the lead SNP of each. SNP alleles near GCKR, MLXIPL, BDNF and CYP1A2 that were associated with higher coffee consumption have previously been associated with smoking initiation, higher adiposity and fasting insulin and glucose but lower blood pressure and favorable lipid, inflammatory and liver enzyme profiles (P<5 × 10-8).Our genetic findings among European and African-American adults reinforce the role of caffeine in mediating habitual coffee consumption and may point to molecular mechanisms underlying inter-individual variability in pharmacological and health effects of coffee
Reconceptualization of information technology flexibility for supply chain management: an empirical study
IT flexibility is an increasingly important factor in today's dynamic business environment. However, earlier research lacks 1) an integrated framework that corresponds to diverse processes for supply chain management and 2) an explanation of how IT flexibility affects firms’ performance in the supply chain context. To fill these gaps, our study theorised a research model by integrating disparate streams of IT flexibility research with three types of IT flexibility, namely, operational, transactional, and strategic, and tested both the direct and indirect effects of the three IT flexibility types on firm performance. Our theoretical model uses an extended resource-based view to highlight the role of IT flexibility in managing interdependent firm relationships in supply chains. Using a partial least squares approach to structured equation modelling analysis on 162 questionnaires from supply chain practitioners, we found two significant relationships: (1) transactional IT flexibility affects operational IT flexibility, and (2) operational IT flexibility affects strategic IT flexibility. Transactional IT flexibility also affects strategic IT flexibility, thus playing a pivotal role in the effectiveness of the other two flexibility types. In addition, it was identified that transactional and operational flexibilities affect firm performance indirectly, via process integration capability, while strategic flexibility directly affects firm performance. By classifying diverse IT flexibility attributes into three types, a comprehensive and explicit concept of IT flexibility in inter-organisational relationships is attained, which allows practitioners to target key resource investments to realise the full potential of IT in the supply chain
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