5,174 research outputs found
OCRIS : online catalogue and repository interoperability study. Final report
The aims and objectives of OCRIS were to: • Survey the extent to which repository content is in scope for institutional library OPACs, and the extent to which it is already recorded there; • Examine the interoperability of OPAC and repository software for the exchange of metadata and other information; • List the various services to institutional managers, researchers, teachers and learners offered respectively by OPACs and repositories; • Identify the potential for improvements in the links (e.g. using link resolver technology) from repositories and/or OPACs to other institutional services, such as finance or research administration; • Make recommendations for the development of possible further links between library OPACs and institutional repositories, identifying the benefits to relevant stakeholder groups
Ionosphere/microwave beam interaction study
A solar power satellite microwave power density of 20mw sq cm was confirmed as the level where nonlinear interactions may occur in the ionosphere, particularly at 100 km altitude. Radio wave heating at this altitude, produced at the Arecibo Observatory, yielded negative results for radio wave heating of an underdense ionosphere. Overdense heating produced striations in the ionosphere which may cause severe radio frequency interference problems under certain conditions. The effects of thermal self-focusing are shown to be limited severely geographically. The aspect sensitivity of field-aligned striations makes interference-free regions above magnetic latitude about 60 deg. A test program is proposed to simulate the interaction of the SPS beam with the ionosphere, to measure the effects of the interaction on the ionosphere and on communication and navigation systems, and to interpret the results
Reforming Japan: Measuring the Success of the Allied Occupation\u27s Economic Educational and Constitutional
Following the surrender of Japan on September 2 of 1945, American forces occupied Japan in an attempt to remove Japan’s ability to wage aggressive war. From 1945 to 1952, Occupation authorities in Tokyo under General Douglas MacArthur undertook a number of reforms intended to ‘demilitarize’ and ‘democratize’ Japan, some of which left major structural changes to the pre-war Japanese system. This thesis will focus on three reforms: the dissolution of Japan’s zaibatsu (large industrial conglomerates such as Nissan), democratization of the education system, and Article IX of Japan’s Constitution which bans Japan from possessing military forces. I analyze the success of each reform through the end of the Cold War by examining if their purpose and structure has remained in place. By 1947 events on the world stage, including the routing of U.S. ally Chiang Kai-Shek’s forces in China, by Mao Zedong’s communist forces, and the rapid emergence of communist regimes in Eastern Europe, became issues of immediate concern among American policymakers. In Japan, continuing economic troubles including inflation and high unemployment lead to the rise of powerful labor movements that were increasingly linked to communists. In light of these events, conservatives in the United States Government and conservatives in the Japanese government joined forces to reverse some of the early reforms hoping to create a stable country free from communist influence. Beginning in 1948, both the structure and purpose of the zaibatsu reforms were undermined as the U.S. withdrew support for the Occupation’s economic reforms, after which the conglomerates again dominated the Japanese economy. While the Ministry of Education began to regain centralized control of the education system in the 1950s, many structural changes remained in place such as teachers Unions; in addition, pacifist curriculums continue to be an important legacy of the Occupation. Finally, Article IX of Japan’s constitution has faced large challenges after independence, however, it has remained unamended 70 years later, and further, during this time Japan has not fought a war. I will argue that the education reforms and Article IX were successful because of widespread popular support while the zaibatsu reforms failed due to lack of popular support and Cold War Pressures to stabilize the economy
The Life-history Tactics Of The Voles, Clethrionomys Gapperi And Microtus Pennsylvanicus, At Two Elevations
The life-history tactics of Clethrionomys gapperi and Microtus pennsylvanicus were examined at two elevations (1450m; 2240m) in southwestern Alberta (Kananaskis Country) to test the hypothesis that females in environments with shorter breeding seasons should produce fewer but larger litters and survive less well than those in environments with longer breeding seasons (Spencer and Steinhoff 1968). Other life-history traits such as body weights and the energetics of reproduction were also compared between elevations.;Life-history data were collected by mark-recapture techniques, kill-trapping and from laboratory colonies.;The high elevation was colder, had fewer frost-free days and more precipitation than the low elevation. The length of the breeding season of C. gapperi averaged two days longer at the low elevation than at the high elevation. The length of the breeding season of M. pennsylvanicus averaged 27 days longer at the low elevation than at the high elevation. The shorter breeding season of M. pennsylvanicus at the high elevation may have been related to spring flooding and colder temperatures compared to the low elevation.;As predicted, the lack of a difference in the lengths of the breeding seasons of C. gapperi between elevations was not associated with any differences in the number of litters, litter size or female survival. Contrary to the hypothesis, the differences in the lengths of the breeding seasons of M. pennsylvanicus did not limit the number of opportunities for breeding for the average female, yet litter size was greater at the high elevation than at the low elevation and there was no difference in female survival between elevations. The average number of litters per season was slightly less than two in all populations; the average female did not survive long enough to produce young over the entire length of the season. Data from the literature also suggested that the length of the breeding season is not associated with litter size and the maximum number of litters per season within these species.;Few traits showed differences between elevations and these were not necessarily the same ones in both species. The maximum weights of over-wintered males, the age when young opened their eyes and one index of reproductive effort showed differences in C. gapperi between elevations. Litter size, nestling survival, maximum weights of over-wintered males, mean weights of mature, young-of-the-year males and the relative fat content of males showed differences in M. pennsylvanicus between elevations. These differences are probably phenotypic responses to environmental conditions such as food quality. Alternatively, some differences may have been fixed at random by genetic drift
Actuarial applications of survival analysis in healthcare
Healthcare actuaries are increasingly responsible for advising their employers and
clients in areas of managed care. Managed care links traditional health actuarial
financial work to areas of medical practice, to address the fundamental question: what
works? These relatively new responsibilities have required an expansion of actuarial
techniques into non-traditional areas, and, in particular, epidemiology and biostatistics.
This study is about a specific area of statistics, survival analysis, a topic of great
potential application in non-traditional managed care actuarial practice. Survival
analysis is used frequently in biostatistics to evaluate the efficacy of treatments and to
identify factors that contribute to patient survival. In this study, we illustrate three
applications of survival models to solve real-world problems in areas of health actuarial
practice: the estimation of survival of permanently disabled workers receiving lifetime
benefits for occupational illness and injury, the rate at which seriously ill hospice
patients, at risk of polypharmacy, are weaned from non-life sustaining drugs, and the
ability to predict, using a model incorporating drug dosage information and specifically
changes in dosage, changes in expected future lifetimes of hospice patients.
All three case studies are examples of practical models that can be applied
within a business context. The study will serve a more important purpose, if it shows
health actuaries the potential value of the application of a non-traditional technique
within their evolving practice
Heating and cooling of coronal loops with turbulent suppression of parallel heat conduction
Using the "enthalpy-based thermal evolution of loops" (EBTEL) model, we
investigate the hydrodynamics of the plasma in a flaring coronal loop in which
heat conduction is limited by turbulent scattering of the electrons that
transport the thermal heat flux. The EBTEL equations are solved analytically in
each of the two (conduction-dominated and radiation-dominated) cooling phases.
Comparison of the results with typical observed cooling times in solar flares
shows that the turbulent mean free-path lies in a range
corresponding to a regime in which classical (collision-dominated) conduction
plays at most a limited role. We also consider the magnitude and duration of
the heat input that is necessary to account for the enhanced values of
temperature and density at the beginning of the cooling phase and for the
observed cooling times. We find through numerical modeling that in order to
produce a peak temperature ~K and a 200~s cooling time
consistent with observations, the flare heating profile must extend over a
significant period of time; in particular, its lingering role must be taken
into consideration in any description of the cooling phase. Comparison with
observationally-inferred values of post-flare loop temperatures, densities, and
cooling times thus leads to useful constraints on both the magnitude and
duration of the magnetic energy release in the loop, as well as on the value of
the turbulent mean free-path .Comment: 16 pages, 4 figures, to be published in The Astrophysical Journa
Persistence of chlorpropham (CIPC) in the concrete flooring of potato stores
The loss of the sprout suppressant, chlorpropham (CIPC), to the fabric of potato stores is currently of concern due to the risk of potential cross contamination of other crops subsequently housed in these stores. HPLC UV/VIS and GCMS methods were successfully employed to detect CIPC in the concrete flooring of research and commercial potato stores with histories of between 1 and 26 years of use. The concentrations in identical research stores, with different numbers of applications, were in the range 0.58–5.7 and 3.4–112 μg g−1, suggesting the magnitude of contamination was influenced by the number of applications. Commercial store A, with a history of 18 seasons of applications (estimate of total CIPC applied 2040 kg), had concentrations varying between 6 and 48 μg g−1 in the top three centimetres, with more than 92% within the top centimetre. In contrast, commercial store B, with a history of less than five seasons of applications (estimate of total CIPC applied 319 kg), had concentrations varying between 0.58 and 304 μg g−1 in the top four centimetres, with less than 47% within the top centimetre. The difference in depth distributions between A and B may be due to the structural integrity of the concrete, which was much poorer in B. CIPC was persistent in all stores irrespective of the total quantities of CIPC applied and date of the final application
The DiSCmap project : digitisation of special collections: mapping, assessment, prioritisation
The paper presents the outcomes of DiSCmap, a JISC and RIN-funded project which aimed to study users' priorities for digitisation of special collections within the context of the higher education institutions in the UK. The project produced a 'long list' of 945 collections nominated for digitisation by intermediaries and end users and a user-driven prioritisation framework. Web surveys were used as a tool to gather data in combination with focus groups and telephone interviews with end users helped to get additional insights on their views in particular domains. The project developed an online forum and a group in Facebook in order to find to what extent the social networking technologies can be used to sustain a professional informal community but this did not prove to be successful. Over 1000 specialists took part in the different forms used to gather intermediaries and end users' nominations of collections for the "long list" and opinions about digitisation priorities. The long list of 945 special collections nominated for digitisation can be useful as an evidence of identified user interest; this list is not seen as a "snapshot" but as an outcome which needs to be sustained and further developed in the future. A user-driven framework for prioritizing digitisation was produced; it fits well with the current JISC digitisation strategy, providing a further level of detail on user priorities. The project also suggests a flexible approach for prioritizing collections for digitisation based on the use of the framework in combination with the long list of collections. The project did not make a representative study; the participation of intermediaries and end users was a matter of good will. Yet, special collections from 44% of the higher education institutions in the UK were nominated to the long list. The work on the project provided new insights and evidence on the user priorities in digitisation of special collections. It also suggests a user-driven digitisation prioritization framework which would be of benefit in future decision making
The DiSCmap project : overview and first results
Traditionally, digitisation of cultural and scientific heritage material for use by the scholarly community has been led by supply rather than demand. The DiSCmap project commissioned by JISC in 2008, aimed to study what refocussing of digitisation efforts will suit best the users of digitised materials, especially in the context of the research and teaching in the higher education institutions in the UK. The paper presents some of its initial outcomes based on quantitative and qualitative analysis of 945 special collections nominated for digitisation by intermediary users (librarians, archivist and museum curators), as well as end users' study involving a combination of online survey, focus groups and in-depth interviews. The criteria for prioritising digitisation advanced by intermediaries and end users were analysed and cross-mapped to a range of existing digitisation frameworks. A user-driven prioritisation framework which synthesises the findings of the project is presented
DiSCmap : digitisation of special collections mapping, assessment, prioritisation. Final project report
Traditionally, digitisation has been led by supply rather than demand. While end users are seen as a priority they are not directly consulted about which collections they would like to have made available digitally or why. This can be seen in a wide range of policy documents throughout the cultural heritage sector, where users are positioned as central but where their preferences are assumed rather than solicited. Post-digitisation consultation with end users isequally rare. How are we to know that digitisation is serving the needs of the Higher Education community and is sustainable in the long-term? The 'Digitisation in Special Collections: mapping, assessment and prioritisation' (DiSCmap) project, funded by the Joint Information Systems Committee (JISC) and the Research Information Network (RIN), aimed to:- Identify priority collections for potential digitisation housed within UK Higher Education's libraries, archives and museums as well as faculties and departments.- Assess users' needs and demand for Special Collections to be digitised across all disciplines.- Produce a synthesis of available knowledge about users' needs with regard to usability and format of digitised resources.- Provide recommendations for a strategic approach to digitisation within the wider context and activity of leading players both in the public and commercial sector.The project was carried out jointly by the Centre for Digital Library Research (CDLR) and the Centre for Research in Library and Information Management (CERLIM) and has taken a collaborative approach to the creation of a user-driven digitisation prioritisation framework, encouraging participation and collective engagement between communities.Between September 2008 and March 2009 the DiSCmap project team asked over 1,000 users, including intermediaries (vocational users who take care of collections) and end users (university teachers, researchers and students) a variety of questions about which physical and digital Special Collections they make use of and what criteria they feel must be considered when selecting materials for digitisation. This was achieved through workshops, interviews and two online questionnaires. Although the data gathered from these activities has the limitation of reflecting only a partial view on priorities for digitisation - the view expressed by those institutions who volunteered to take part in the study - DiSCmap was able to develop:- a 'long list' of 945 collections nominated for digitisation both by intermediaries andend-users from 70 HE institutions (see p. 21);- a framework of user-driven prioritisation criteria which could be used to inform current and future digitisation priorities; (see p. 45)- a set of 'short lists' of collections which exemplify the application of user-driven criteria from the prioritisation framework to the long list (see Appendix X):o Collections nominated more than once by various groups of users.o Collections related to a specific policy framework, eg HEFCE's strategically important and vulnerable subjects for Mathematics, Chemistry and Physics.o Collections on specific thematic clusters.o Collections with highest number of reasons for digitisation
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