307 research outputs found
The Global Exploration Roadmap: Opportunities for Lunar Science
The Global Exploration Roadmap (GER) has been developed by the International Space Exploration Coordination Group (ISECG comprised of 14 space agencies) to define various pathways to getting humans beyond low Earth orbit and eventually to Mars. Such pathways include visiting asteroids or the Moon before going on to Mars. This document has been written at a very high level and many details are still to be determined. However, a number of important papers regarding international space exploration can form a basis for this document.This poster will focus on developing the Lunar Vicinity scenario by adding detail via mapping a number of recent reportsdocuments into the GER. The documents highlighted here are in no way meant to be all encompassing and other documents can and should be added, (e.g., the JAXA Space Exploration Roadmap). This exercise is intended to demonstrate that existing documents can be mapped into the GER despite the major differences in granularity, and that this mapping is a way to promote broader national and international buy-in to the Lunar Vicinity scenario.The documents used here are: the Committee on Space Research (COSPAR) Panel on Exploration report on developing a global space exploration program, the Strategic Knowledge Gaps (SKGs) report from the Lunar Exploration Analysis Group (LEAG), the Lunar Exploration Roadmap developed by LEAG, the National Research Council report Scientific Context for the Exploration of the Moon (SCEM), and two journal articles, the scientific rationale for resuming lunar surface exploration, and the astrobiological benefits of human space exploration.In addition, the ISECG is in the process of developing a Science White Paper (SWP) to accompany the next edition of the GER, due in late 2016. The SWP will be an important tool to communicate science which will be able to be accomplished at human exploration destinations to policymakers. This abstract will discuss the process of developing this SWP and ways in which the global science community can become engaged in its development
SynthETIC: an individual insurance claim simulator with feature control
Recent years have seen rapid increase in the application of machine learning
to insurance loss reserving. They yield most value when applied to large data
sets, such as individual claims, or large claim triangles. In short, they are
likely to be useful in the analysis of any data set whose volume is sufficient
to obscure a naked-eye view of its features. Unfortunately, such large data
sets are in short supply in the actuarial literature. Accordingly, one needs to
turn to synthetic data. Although the ultimate objective of these methods is
application to real data, the use of synthetic data containing features
commonly observed in real data is also to be encouraged.
While there are a number of claims simulators in existence, each valuable
within its own context, the inclusion of a number of desirable (but
complicated) data features requires further development. Accordingly, in this
paper we review those desirable features, and propose a new simulator of
individual claim experience called SynthETIC.
Our simulator is publicly available, open source, and fills a gap in the
non-life actuarial toolkit. The simulator specifically allows for desirable
(but optionally complicated) data features typically occurring in practice,
such as variations in rates of settlements and development patterns; as with
superimposed inflation, and various discontinuities, and also enables various
dependencies between variables. The user has full control of the mechanics of
the evolution of an individual claim. As a result, the complexity of the data
set generated (meaning the level of difficulty of analysis) may be dialled
anywhere from extremely simple to extremely complex
An Impact Evaluation of the 'Joy Project'
This report gives an overview of research undertaken to evaluate the impact of the JOY Project which is based in the City of Worcester, England. The project is "a woman only community project which provides support to enable women to gain a variety of skills, enhance their confidence and empower them to make their own informed decisions" (WCT, 2018a).
The evaluation considers the extent to which the project serves the local community by comparing data on service users with local socio-demographics and outlines the extent to which the project's aims and outcomes set by the funder, The Big Lottery Fund) are met. It highlights additional outcomes and captures the impact of project activities on service users. Ultimately, it draws conclusions about the quality, impact and value of the JOY Project
Identifying malaria vector breeding habitats with remote sensing data and terrain-based landscape indices in Zambia
<p>Abstract</p> <p>Background</p> <p>Malaria, caused by the parasite <it>Plasmodium falciparum</it>, is a significant source of morbidity and mortality in southern Zambia. In the Mapanza Chiefdom, where transmission is seasonal, <it>Anopheles arabiensis </it>is the dominant malaria vector. The ability to predict larval habitats can help focus control measures.</p> <p>Methods</p> <p>A survey was conducted in March-April 2007, at the end of the rainy season, to identify and map locations of water pooling and the occurrence anopheline larval habitats; this was repeated in October 2007 at the end of the dry season and in March-April 2008 during the next rainy season. Logistic regression and generalized linear mixed modeling were applied to assess the predictive value of terrain-based landscape indices along with LandSat imagery to identify aquatic habitats and, especially, those with anopheline mosquito larvae.</p> <p>Results</p> <p>Approximately two hundred aquatic habitat sites were identified with 69 percent positive for anopheline mosquitoes. Nine species of anopheline mosquitoes were identified, of which, 19% were <it>An. arabiensis</it>. Terrain-based landscape indices combined with LandSat predicted sites with water, sites with anopheline mosquitoes and sites specifically with <it>An. arabiensis</it>. These models were especially successful at ruling out potential locations, but had limited ability in predicting which anopheline species inhabited aquatic sites. Terrain indices derived from 90 meter Shuttle Radar Topography Mission (SRTM) digital elevation data (DEM) were better at predicting water drainage patterns and characterizing the landscape than those derived from 30 m Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) DEM.</p> <p>Conclusions</p> <p>The low number of aquatic habitats available and the ability to locate the limited number of aquatic habitat locations for surveillance, especially those containing anopheline larvae, suggest that larval control maybe a cost-effective control measure in the fight against malaria in Zambia and other regions with seasonal transmission. This work shows that, in areas of seasonal malaria transmission, incorporating terrain-based landscape models to the planning stages of vector control allows for the exclusion of significant portions of landscape that would be unsuitable for water to accumulate and for mosquito larvae occupation. With increasing free availability of satellite imagery such as SRTM and LandSat, the development of satellite imagery-based prediction models is becoming more accessible to vector management coordinators.</p
The feasibility of measuring calprotectin from a throat swab as a marker of infections caused by group A streptococcus: a case–control feasibility study
Background Most people with sore throat do not benefit from antibiotic treatment, but nearly three-quarters of those presenting in primary care are prescribed antibiotics. A test that is predictive of bacterial infection could help guide antibiotic prescribing. Calprotectin is a biomarker of neutrophilic inflammation, and may be a useful marker of bacterial throat infections.Aim To assess the feasibility of measuring calprotectin from throat swabs, and assess whether individuals with sore throats likely to be caused by streptococcal infections have apparently higher throat calprotectin levels than other individuals with sore throat and healthy volunteers.Design & setting A proof of concept case–control study was undertaken, which compared primary care patients with sore throats and healthy volunteers.Method Baseline characteristics and throat swabs were collected from 30 primary care patients with suspected streptococcal sore throat, and throat swabs were taken from 10 volunteers without sore throat. Calprotectin level determination and rapid antigen streptococcal testing were conducted on the throat swab eluents. Calprotectin levels in the following groups were compared: volunteers without a sore throat; all patients with a sore throat; patients with a sore throat testing either negative or positive for streptococcal antigen; and those with lower and higher scores on clinical prediction rules for streptococcal sore throat.Results Calprotectin was detected in all throat swab samples. Mean calprotectin levels were numerically higher in patients with sore throat compared with healthy volunteers, and sore throat patients who had group A streptococci antigen detected compared with those who did not.Conclusion Calprotectin can be measured from throat swab samples and levels are consistent with the hypothesis that streptococcal infection leads to higher throat calprotectin levels. This hypothesis will be tested in a larger study.leukocyte L1 antigen complexpharyngitisanti-bacterial agentsgroup A streptococciprimary health carecalprotectinsore throatantibiotic
The Joy Project
Community Development for Social Change provides a comprehensive introduction to the theory and practice of community development and associated activities and discusses best practice from global experience and links that to the UK context. The book integrates the realities of practice to key underpinning theories, human rights, values and a commitment to promoting social justice.
A range of practice models are described and analysed, including UK models, popular education and community organising as well as a range of practice issues that need to be understood by community development workers. For example, strategies to promote individual and community empowerment, challenging discrimination, building and sustaining groups, and critical reflection on practice.
Finally, a range of case studies from the UK and overseas illustrates good practice in diverse contexts. These case studies are analysed with reference to the values of community development, the promotion of social justice and the underpinning theories. It is an essential text for those on community development courses as well as for a range of workers, including local government, national and local voluntary agencies, and community based organisations
Evolution of the Macrophage CD163 Phenotype and Cytokine Profiles in a Human Model of Resolving Inflammation
Cantharidin skin blisters were examined over two days to model the acute and resolving phases of inflammation in human skin. Four blisters were created by topical administration of cantharidin (0.1% v/v) to the forearm of healthy volunteers, with IRB approval. Duplicate skin blisters were aspirated at 16 and 40 hours to model the proinflammatory and resolving phases, respectively. There was a significant increase in leukocyte infiltrate at 40 h with appearance of a “resolving macrophage” phenotype CD14(+)CD163(+) by flow cytometry. Neutrophils acquired apoptotic markers at 40 h and were observed to be phagocytosed by macrophagic “Reiter's” cells. Multiplex cytokine analysis demonstrated that monocyte chemoattractant protein (MCP-1/CCL2), interleukin- (IL-) 6, IL-8/CXCL8, macrophage inflammatory protein (MIP1α/CCL3), MIP-1β/CCL4, tumor necrosis factor- (TNF-) α, and eotaxin (CCL11) were all significantly upregulated at 16 h compared with 40 h. In contrast, immunoregulatory transforming growth factor- (TGF-) β, macrophage-derived chemokine (MDC/CCL22), and interferon-inducible protein (IP-10/CXCL10) were significantly elevated at 40 h. Our results demonstrate that the phases of inflammation and resolution can be discriminated in a two-day model of dermal wound healing. This confirms and extends our understanding of wound repair in humans and provides a powerful research tool for use in clinical settings and to track the molecular benefits of therapeutic intervention
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