5,424 research outputs found
Roy F. Harrison
No full textThe Oklahoma A&M College World War I Veterans collection captures the memories and experiences of the men and women of Oklahoma Agricultural and Mechanical College who served in World War I. In 1919, a project headed by Maude Cass, the editor of the 1919 Redskin; Professor Maroney of the Department of History; Margaret Walters, Librarian; and J.W. Cantwell, the College President, was undertaken to survey these veterans. The surveys were returned along with photographs, letters, and newspaper clippings documenting these veterans’ experiences during World War I
Letter from Carl Hayden to Roy W. James and M. J. Hanley
No full textLetter from Carl Hayden to Roy James and M. J. Hanley expressing a wish to soon have a definite answer in regards to their insurance claims
Air quality at risk: Brexit and lobbying from member states could stall progress on reducing pollution
No full textAir pollution is linked to thousands of premature deaths across Europe each year and the European Union has a key role in addressing the problem. Roy M. Harrison states that although much progress has been made in improving air quality, lobbying from member states has led to a notable weakening of the resolve of the Commission to propose a real tightening of emissions ceilings. It also remains to be seen how Brexit will affect Britain’s air quality given the EU has been a major driver of action in the UK
Sources of PM in an Industrial Area: Comparison between Receptor Model Results and Semiempirical Calculations of Source Contributions
Full text linkSource apportionment of PM10 and PM2.5 samples collected in an industrial area of the Po Valley was performed by using the Positive Matrix Factorization (PMF) model and a semiempirical calculation of five macro-source contributions. Samples were collected during four monitoring periods, January-February 2011, June 2012, January-February 2012, May-June 2012, resulting in a total of 720 samples (360 for PM10 and 360 for PM2.5). PMF variables included major elements, ions, elemental carbon and organic compounds and minor and trace elements. In order to increase the selectivity of minor and trace elements as source tracers, a chemical fractionation methodology based on the elemental solubility was employed; it was thus possible to include the extractable, the residual or both thefractions of the minor and trace elements in the database.
PMF resolved six factors for PM10 (crustal matter, marine aerosol, industry, secondary/oil combustion, secondary nitrate/biomass burning/exhaust particles, brake/tyre wear/re-suspended road dust) and seven factors for PM2.5 (crustal matter, marine aerosol, industry, secondary nitrate, biomass burning, other secondary components, secondary sulphate/oil combustion). Mixing properties of the lower atmosphere were monitored by using natural radioactivity. The lack in the separation of some sources was shown to be due to their co-variation during periods of high atmospheric stability in the cold months. Seasonal variations of the source contributions were evaluated and discussed.
PMF results were compared with those obtained by a semiempirical calculation method in which analytical results are grouped into five macro-sources (crustal matter, marine aerosol, secondary inorganic compounds, combustion products from vehicular emissions and organics). Although similar trends in the temporal variation of the main PM sources were obtained, the absolute magnitude of the concentrations varied in some cases, especially for crustal matter and marine aerosol sources.Source apportionment of PM10 and PM2.5 samples collected in an industrial area of the Po Valley was performed by using the Positive Matrix Factorization (PMF) model and a semiempirical calculation of five macro-source contributions. Samples were collected during four monitoring periods, January-February 2011, June 2012, January-February 2012, May-June 2012, resulting in a total of 720 samples (360 for PM10 and 360 for PM2.5). PMF variables included major elements, ions, elemental carbon and organic compounds and minor and trace elements. In order to increase the selectivity of minor and trace elements as source tracers, a chemical fractionation methodology based on the elemental solubility was employed; it was thus possible to include the extractable, the residual or both thefractions of the minor and trace elements in the database.
PMF resolved six factors for PM10 (crustal matter, marine aerosol, industry, secondary/oil combustion, secondary nitrate/biomass burning/exhaust particle
Quantification of air quality impacts of London Heathrow Airport (UK) from 2005 to 2012
Full text linkAmong other emission sources in the Greater London area, the international airport of Heathrow is recognised to be a major source of air pollution and is one of the UK locations where European air quality Limit Values are currently breached. However it is very difficult to differentiate between pollutants arising from airport operations and those from the large volumes of road traffic generated by the airport, as well as the nearby M4 and M25 motorways, A4 and A30 major roads, the conurbation of London and other external sources. In this study, eight years (January 2005-December 2012) of measurements of various air pollutants (NO, NO2, NOx, O3, CO, PM10 and PM2.5) were investigated from 10 sites: eight sites are located within a distance of 2.5 km from the airport, while two sites representative of the regional background and of background air quality in London (Harwell (60 km WNW) and North Kensington (17 km ENE), respectively) were included. A series of statistical tools was thus applied to: (1) investigate the time series by analysing hourly data as diurnal, weekly, seasonal and annual patterns; (2) reveal the effects of the atmospheric circulation upon air pollution by analysing background-corrected polar plots and (3) quantify the impact of the airport upon air quality in the local area using the inter-site differences of measured concentrations. The results show different diurnal patterns in emissions of NOx from the airport and from the motorways. The concentration increment arising from passage of air across the airport during airport activity (6 am-10 pm) and with wind speed > 3 m s-1 is ca. 1-9 μg m-3 of NO2 and 2-20 μg m-3 of NOx at background stations. Such results are slightly lower than in a previous study analysing the 2001-2004 period. Air quality impacts of the M25 and M4 motorways are substantial only at the Hillingdon site (30 m from M4). Concentration increments of particulate matter can take either small positive or negative values.</p
Roy Hoopes papers
No full textRoy Hoopes (1922- ), author, journalist, photographer, and editor was born in Salt Lake City, Utah. However, he grew up in Washington, DC, where his family moved when he was four. After active duty in the Naval Reserves in WWII, he completed his M.A. in 1948 at George Washington University, where he had previously completed his A.B. in 1943. Thereafter he edited and wrote for various magazines such as National Geographic Magazine, Playboy, Modern Maturity, and Maryland, for which he wrote a regular series of articles on Maryland writers. In addition, Hoopes wrote a weekly newspaper column on current events for the Berkshire (MA) Eagle under the pseudonym Peter Potomac from 1957 to 1977. Hoopes was the author of more than thirty books. He was the official biographer of James M. Cain and Ralph Ingersoll as well as co-author of the biography of Mormon apostle Rudger Clawson, of whom he is a descendent. He has written works of fiction such as Our Man in Washington as well as many non-fiction books including When the Stars Went to War, Americans Remember the Home Front and The Peace Corps Experience. Hoopes took up photography in 1969 and provided his own photographs for his books and for many articles. This collection includes drafts of books and magazine articles, research for both published and unpublished articles and books, photographs, serials, correspondence, and original artwork by political cartoonists Richard M. Powers and Herblock. The collection is unprocessed, but a preliminary inventory is available
Dynamic Bayesian models for vector time series analysis & forecasting
Full text linkThis thesis considers the Bayesian analysis of general multivariate DLM's (Dynamic Linear
Models) for vector time series forecasting where the observational variance matrices are
unknown. This extends considerably some previous work based on conjugate analysis for
a special sub—class of vector DLM's where all marginal univariate models follow the same
structure.
The new methods developed in this thesis, are shown to have a better performance than
other competing approaches to vector DLM analysis, as for instance, the one based on the
Student t filter.
Practical aspects of implementation of the new methods, as well as some theoretical properties
are discussed, further model extensions are considered, including non—linear models
and some applications with real and simulated data are provided
Regional integration fifty years after the treaty of Rome. The EU, Asia, Africa and the Americas.
Full text linkThe European Union has been the pioneer and undisputed
leader of regional integration processes. Since its inception in
the 1950s, following the Schuman Declaration that set in motion
Jean Monnet’s innovative idea to join together European coal
and steel industries, Europe has offered a useful model for
regional integration. Strengthened by the 1957 Treaty of Rome
(exactly half a century ago), this bold entity was later transformed
into the European Union by the Maastricht Treaty.
Having successfully accomplished its primary goal (“to make
war unthinkable and materially impossible”), the EU is currently
facing challenges associated with its expansion and the deepening
of its pooled sovereignty. On the other hand, the effects
of the EU in international relations are of paramount relevance.
While the forceful transposition of national and regional structures
into other regions is a historical error, the essence of the
EU as a model to be adapted by other regions is a viable
approach to enhance stability and welfare. In this regard, this
volume examines the current challenges of the EU and the perspectives
of regional integration in Africa, Asia and Latin
America
Aircraft engine exhaust emissions and other airport-related contributions to ambient air pollution:A review
Full text linkCivil aviation is fast-growing (about+5% every year), mainly driven by the developing economies and globalisation. Its impact on the environment is heavily debated, particularly in relation to climate forcing attributed to emissions at cruising altitudes and the noise and the deterioration of air quality at ground-level due to airport operations. This latter environmental issue is of particular interest to the scientific community and policymakers, especially in relation to the breach of limit and target values for many air pollutants, mainly nitrogen oxides and particulate matter, near the busiest airports and the resulting consequences for public health. Despite the increased attention given to aircraft emissions at ground-level and air pollution in the vicinity of airports, many research gaps remain. Sources relevant to air quality include not only engine exhaust and non-exhaust emissions from aircraft, but also emissions from the units providing power to the aircraft on the ground, the traffic due to the airport ground service, maintenance work, heating facilities, fugitive vapours from refuelling operations, kitchens and restaurants for passengers and operators, intermodal transportation systems, and road traffic for transporting people and goods in and out to the airport. Many of these sources have received inadequate attention, despite their high potential for impact on air quality. This review aims to summarise the state-of-the-art research on aircraft and airport emissions and attempts to synthesise the results of studies that have addressed this issue. It also aims to describe the key characteristics of pollution, the impacts upon global and local air quality and to address the future potential of research by highlighting research needs.</p
Analysis of the air pollution climate at a central urban background site
No full textMeasurements of air pollutants from a background site in central London are analysed. These comprise hourly data for CO, NO, NO2, O3, SO2 and PM10 from 1996 to 2008 and particle number count from 2001 to 2008. The data are analysed in terms of long-term trends, annual, weekly and diurnal cycles, and autocorrelation and cross-correlation functions. CO, NO and NO2 show a typical traffic-associated pattern with two daily peaks and lesser concentrations at the weekend. Particle number count and PM10 show a similar cycle, but with smaller amplitude. Ozone has an annual cycle with a maximum in May, influ- enced by the spring maximum in background ozone, but the diurnal and weekly cycles are dominated by losses through reaction with nitric oxide. Particle number count shows a minimum corresponding with maximum air temperatures in August, whereas the CO, NO NO2 and SO2 show a minimum in June/July. There is a lower particle count to NOx ratio at the background site compared to a central London kerbside site (Marylebone Road) and a seasonal pattern in particle count to NOx and PM10 ratios consistent with loss of nanoparticles by evaporation during atmospheric transport. Sulphur dioxide peaks in the morning in summer, but at midday in winter consistent with emissions from elevated sources mixing down from aloft as the diurnal mixed layer deepens. Implications for epidemiological studies of air quality and health are discussed. Sulphur dioxide, carbon monoxide, nitric oxide and nitrogen dioxide show clear downward trends over the measurement period, PM10 declines initially before levels stabilised, and ozone concentrations increased
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