4,664 research outputs found

    Potential usefulness of CCD imagers in astronomy

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    Two dimensional detectors have been important in astronomy since the earliest days of the science. Recently, the requirements for greater photometric accuracy, sensitivity and spectral coverage have driven the search for better imaging devices. Electron beam readout devices with a variety of target materials and intensification schemes, including the SEC and silicon vidicons, have been used successfully. The CCD as an image detector has several potential advantages over electron beam readout devices; low noise, simple construction and geometric stability are among them

    Asteroid surface materials: Mineralogical characterizations from reflectance spectra

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    Mineral assemblages analogous to most meteorite types, with the exception of ordinary chondritic assemblages, have been found as surface materials of Main Belt asteroids. C1- and C2-like assemblages (unleached, oxidized meteoritic clay minerals plus opaques such as carbon) dominate the population throughout the Belt, especially in the outer Belt. A smaller population of asteroids exhibit surface materials similar to C3 (CO, CV) meteoritic assemblages (olivine plus opaque, probably carbon) and are also distributed throughout the Belt. The majority of remaining studied asteroids (20) of 65 asteroids exhibit spectral reflectance curves dominated by the presence of metallic nickel-iron in their surface materials. The C2-like materials which dominate the main asteroid belt population appear to be relatively rare on earth-approaching asteroids

    Performance of the Private Rental Market in Northern Ireland:Issue 23 H1 2024

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    This survey analyses the performance of the Northern Ireland rental market during the first half (January to June; ‘H1’) of 2024. The report provides the Rental index for Northern Ireland and provide analysis of trends and patterns at a regional level during this six-month period, drawing comparisons with the second half of 2023 as a measure of half yearly change and with the same period in 2023 as an indicator of annual change

    Welsh Housing Quality Standard: Summative Evaluation

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    Developed Toast, Modern Laundry: Nepali Household Appliance Discourses

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    This project investigates discourses of modernity, globalization, class identity, and social change in Kathmandu, Nepal, through the lens of ten Nepali women’s purchase and usage of home appliances. Four weeks of ethnographic research sought to identify prevailing practices and attitudes toward household appliances in the city, situating them in broader discourses of globalization, modernity, class identity, and social change. The project is composed of participant observation in Nepali homes, including informal interviews, with project participants sourced from my own social network. My collaborators’ practices and opinions on appliances engage discourses of the developmentalist and modernizing South Asian state, fluid and shifting markers of class identity in the postmodern, globalizing developing world, and the ways in which western and nonwestern public performativity surrounding appliances interacts in the globalized, time-space compressed 21st Century to create a conflicting and contrasting public and private culture of consumption and commodities
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