402,206 research outputs found

    Time Treadmill

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    This project focuses on an android application of writing a digital logbook. The sole purpose of this project is to assist industrial internship students in doing their internship daily logbook report. Students tend to neglect their daily logbook report as the logbook is a hassle to bring along to office especially if the task involves travelling outside of office. The main objective of this application will be to focus on mobility for students to do their daily logbook. It comes with a simple interface which can be easily use and understand without any proper training or tutorial. By recreating the logbook into an android application, students can deal with their daily report while waiting for bus when going to work just by using their smartphone. At the end of the day, students just need to show or transfer the created logbook to their supervisor for approval. The simplicity of the application will relieve students from the burden of their logbook report. This project is going to take about 4-6 months of development time and I am going to use Iterative and Incremental Development to develop this application

    A case study of the radiative effect of aerosols over Europe: EUCAARI-LONGREX

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    The radiative effect of anthropogenic aerosols over Europe during the 2008 European Integrated Project on Aerosol Cloud Climate and Air Quality Interactions Long Range Experiment (EUCAARI-LONGREX) campaign has been calculated using measurements collected by the Facility for Airborne Atmospheric Measurements (FAAM) BAe-146 aircraft and radiative transfer modelling. The aircraft sampled anthropogenically perturbed air masses across north-western Europe under anticyclonic conditions with aerosol optical depths ranging from 0.047 to 0.357. For one specially designed “radiative closure” flight, simulated irradiances have been compared to radiation measurements for a case of aged European aerosol in order to explore the validity of model assumptions and the degree of radiative closure that can be attained given the spatial and temporal variability of the observations and their measurement uncertainties. Secondly, the diurnally averaged aerosol radiative effect throughout EUCAARI-LONGREX has been calculated. The surface radiative effect ranged between −3.9 and −22.8 W m−2 (mean −11 ± 5 W m−2), whilst top-of-the-atmosphere (TOA) values were between −2.1 and −12.0 W m−2 (mean −5 ± 3 W m−2). We have quantified the uncertainties in our calculations due to the way in which aerosols and other parameters are represented in a radiative transfer model. The largest uncertainty in the aerosol radiative effect at both the surface and the TOA comes from the spectral resolution of the information used in the radiative transfer model (∼ 17 %) and the aerosol description (composition and size distribution) used in the Mie calculations of the aerosol optical properties included in the radiative transfer model (∼ 7 %). The aerosol radiative effect at the TOA is also highly sensitive to the surface albedo (∼ 12 %)

    The inhibiting factors that principal investigators experience in leading publicly funded research

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    Securing public funding to conduct research and leading it by being a principal investigator (PI) is seen as significant career development step. Such a role brings professional prestige but also new responsibilities beyond research leadership to research management. If public funding brings financial and infrastructure support, little is understood about the inhibiting factors that publicly funded PIs face given the research autonomy offered by publicly funded research. Our study finds that there are three key PI inhibiting factors (1) political and environmental, (2) institutional and (3) project based. Traditional knowledge, skills and technical know-how of publicly funded PIs are insufficient to deal with the increasing managerial demands and expectations i.e. growing external bureaucracy of public funding agencies. Public funding is no longer the 'freest form of support' as suggested by Chubin and Hackett (Peerless science: peer review and US science policy. Suny Press, New York, 1990) and the inhibiting factors experienced by publicly funded PIs limits their research autonomy. We also argue that PIs have little influence in overcoming these inhibiting factors despite their central role in conducting publicly funded research

    Perspective study: governance for C2C

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    This perspective study will serve as frame of reference for follow-up activities and exchanges both within and outside the Cradle to Cradle Network (C2CN) and it aims to reflect the current challenges and opportunities associated with implementing a Cradle to Cradle approach. In total, four perspective studies have been written, in the areas on industry, area spatial development, governance and on the build theme

    Next Gen Philanthropy: finding the path between tradition and innovation

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    This guide offers a series of questions that every next generation donor should carefully consider, as well as recommendations based on the past experiences of other next gen donors. It is not designed to tell you what to do or how to think. On the contrary, it starts from the assumption that you are the captain of your destiny when it comes to philanthropy. The goal is to inspire you to dream and consider new possibilities, to plan what joy in giving might look like. Written for emerging philanthropists and for those who are established but considering a slight-to-massive makeover, we want to reveal the potential -- as well as the challenges -- of giving. And we want to do it from the fresh perspective of what some people call the next generation: those who must decide how to honor the legacy of the past while creating a legacy of their own

    Economic evaluation of small desalination plants from brackish aquifers. Application to Campo de Cartagena (SE Spain)

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    The Campo de Cartagena (Eastern Spain) is one of Europe’s driest areas with a mean precipitation of around 300 mm. One of the main challengesin the region is to secure a reliable water supply in both quantity and quality terms, to provide a water supply and agricultural irrigation, while water desalination has become an extensively applied solution, and one of the most sustainable solutions to the water scarcity problem. As water availability is lacking and groundwater quality is poor, the agricultural sector in Campo de Cartagena has developed small private brackish groundwater desalination plants (15-20 m3/h) through already existing agricultural wells. Costs and benefits (C-B) for citrus cultivation (1 ha) in three such plants have been assessed. The results indicate that for the studied cases, current agricultural management is feasible and costs outweigh benefits, with a positive NPV and a cost/benefit ratio higher than 1. The internal rate of return is also positive and higher than 11%. The results evidence practical and theoretical implications as to how to increase water resources in areas where water is scarce by closing the loop, ensuring farmers’ profitability and encouraging private sector investments.Peer ReviewedPostprint (author's final draft

    The dynamical mass and evolutionary status of the type-II Cepheid in the eclipsing binary system OGLE-LMC-T2CEP-211 with a double-ring disk

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    We present the analysis of a peculiar W~Virginis (pWVir) type-II Cepheid, OGLE-LMC-T2CEP-211 (Ppuls=9.393dP_{puls}=9.393\,d), in a double-lined binary system (Porb=242dP_{orb}=242\,d), which shed light on virtually unknown evolutionary status and structure of pWVir stars. The dynamical mass of the Cepheid (first ever for a type-II Cepheid) is 0.64±0.02M0.64\pm{}0.02\,M_\odot and the radius R=25.1±0.3RR=25.1\pm{}0.3\,R_\odot. The companion is a massive (5.67M5.67\,M_\odot) main-sequence star obscured by a disk. Such configuration suggests a mass transfer in the system history. We found that originally the system (Porbinit=12dP_{orb}^{init}=12\,d) was composed of 3.53.5 and 2.8M2.8\,M_\odot stars, with the current Cepheid being more massive. The system age is now \sim{}200 My, and the Cepheid is almost completely stripped of hydrogen, with helium mass of 92%\sim{}92\% of the total mass. It finished transferring the mass 2.5 My ago and is evolving towards lower temperatures passing through the instability strip. Comparison with observations indicate a reasonable 2.7108M/y2.7\cdot{}10^{-8}\,M_\odot/y mass loss from the Cepheid. The companion is most probably a Be main-sequence star with T=22000KT=22000\,K and R=2.5RR=2.5\,R_\odot. Our results yield a good agreement with a pulsation theory model for a hydrogen-deficient pulsator, confirming the described evolutionary scenario. We detected a two-ring disk (Rdisk116RR_{disk}\sim\,116\,R_{\odot}) and a shell (Rshell9RR_{shell}\sim\,9\,R_{\odot}) around the companion, that is probably a combination of the matter from the past mass transfer, the mass being lost by the Cepheid due to wind and pulsations, and a decretion disk around a rapidly rotating secondary. Our study together with observational properties of pWVir stars suggests that their majority are products of a similar binary evolution interaction.Comment: 21 pages, 14 figures, 6 tables, accepted for publication in Ap

    What makes a successful transition from primary to secondary school?

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    This report presents the findings of a sub-study on transitions undertaken as part of the Effective Pre-school, Primary and Secondary Education 3-14 (EPPSE 3-14 project) a major longitudinal study investigating the influence of pre-school, primary and secondary school on children’s cognitive and social/behavioural development in England. The transitions sub-study of more than 500 children and families sheds light on current transition practices and highlights what helps and hinders a successful transition. It takes into account the influence of child and family background characteristics such as socio-economic status (SES) and gender. It suggests how the transition experience could be improved to enhance the smooth continuity between primary and secondary school. By adopting a mixed methods approach, the study investigated the issues related to transition for four distinctive groups: Local Authorities, children, parents and schools. Officers in six Local Authorities were asked about the way transition was dealt with in their Authority. Children in their first term at secondary school completed a questionnaire on their thoughts and experiences of transition, and the study also sought their parents’ opinions in order to illustrate the whole family’s experience. Finally, there were twelve case studies selected from the respondents of the questionnaire because of their positive experiences of transition. These involved interviews with the children and their primary and secondary teachers. This provided further details of the systems in place that support the transition processes between school phases. The sample was drawn from children and families in the wider EPPSE project. 1190 children from the EPPSE sample made a transition at the end of the 2005-06 academic year. Responses were received from 550 children (a 46% response rate) and 569 parents (a 48% response rate) from across England drawn from 6 Local Authorities (Shire County, Inner London borough, Midlands/Metropolitan region, East Anglia area, and two authorities in the North East). Children were recruited to the case studies using stratified selection to get a balanced mix by region, gender, socio-economic status (SES) and ethnicity. A wide range of data, already available from the main EPPSE study was used to complement the analyses
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