9 research outputs found
Water vapor transmittance models for narrow bands in the 13 to 19. mu. m spectral region
No full textThe purpose of this report is to document the development of water vapor transmittance models for narrow bands (satellite sensor channels) in the 13 to 19 ..mu..m spectral region. The models are the result of research efforts of the author in 1971-1972 while on active duty with the US Air Force at the Air Force Global Weather Central (AFGWC). The models were developed for application in studies involving a temperature profiling sensor system carried aboard the satellites of the Defense Meteorological Satellite Program (DMSP), formerly DAPP. Recently, (Lovill et al., 1978; Luther et al., 1981) the models were implemented for studies concerned with methodologies to retrieve total atmospheric column ozone from measurements of newer DMSP Block 5D series satellite sensors with similar channels (see Nichols, 1975)
Technique to extend ozonesonde temperature data to the mesopause
No full textAn analysis of global Multichannel Filter Radiometer radiances and ozone retrieval results revealed that the simulated radiances were not always representative of the measurements for the CO/sub 2/ channels sensing the temperatures in the middle and upper stratosphere. This problem was particularly pronounced, but not limited to, higher latitude winter conditions. Because of the special importance of the middle stratosphere and high latitudes for ozone analyses, a research effort was undertaken to develop an improved method (described below) of extending the temperatures from the ozonesondes used in the simulation procedure. An overview of the radiative transfer theory is provided to show the importance of the temperature profile in the calculation of simulated radiances
The historical exhibition THE FAMILY OF MAN, compiled by Edward Steichen for the Museum of Modern Art, New York, 1955, in dialogue with the private collection TEUTLOFF PHOTO + VIDEO COLLECTION, THE CONTEMPORARY FAMILY OF MAN, 1968 to the present.
No full textDiese Dissertationsschrift untersucht die historische Fotoausstellung The Family of Man und setzt sie in einen kontextuellen Dialog mit der Teutloff Collection, einer privaten zeitgenössischen Fotosammlung, mit dem Ziel eine dauerhafte dialogische Präsentation beider Sammlungen zu befördern und für zukünftige Diskussionen zu öffnen.The Family of Man, von Edward Steichen für das Museum of Modern Art, New York, konzipiert und 1955 eröffnet, ging bis 1965 als Wanderausstellung um die Welt und gilt als einflußreichstes Fotoprojekt des 20. Jahrhunderts. Mit ihrer pazifistischen Ausrichtung kann die bildgewaltige Installation auch als Visualisierung der Menschenrechtsdeklaration der Vereinten Nationen von 1948 gesehen werden. Die letzte vollständige Kopie wurde auf Wunsch Steichens seinem Geburtsland Luxemburg übergeben. Kuratorisch und konservatorisch betreut wird sie von den Steichen Collections CNA (Centre National de lAudiovisuel), dem staatlich geführten nationalen Zentrum für audiovisuelle Kunst Luxemburgs. Im Jahre 2003 kam The Family of Man auf die Liste des UNESCO Weltdokumentenerbes und wird auf Schloss Clervaux, Luxemburg, ausgestellt.The Family of Man hat Generationen von Kulturschaffenden beeinflusst. Sie inspirierte auch Lutz Teutloff, der unter dem Titel The Contemporary Family of Man eine Sammlung humanistischer Fotografie als zeitgenössische Antwort auf Edward Steichens Opus Magnum aufbaute. Nach Teutloffs Tod gelang der Autorin die erfolgreiche Vermittlung und Übergabe eines großen Teils der Sammlung an das CNA. Mit der Sicherung dieser privaten Fotosammlung für die Öffentlichkeit durch die Übernahme der Steichen Collections CNA und der geplanten dialogischen Präsentation gelingt ein Brückenschlag zu einem UNESCO Weltdokumentenerbe, der auf beide Sammlungen einen neuen Fokus setzt.This dissertation paper examines the historical photographic exhibition of The Family of Man and places it in contextual dialogue with the Teutloff Collection, a private contemporary photographic collection, with the aim of promoting a permanent dialogical presentation of both collections and opening it up for future discussion.The Family of Man, conceived by Edward Steichen for the Museum of Modern Art, New York, and opened in 1955, went around the world as a travelling exhibition until 1965 and is considered the most influential photographic project of the 20th century. With its pacifist orientation, the visually powerful installation can also be seen as a visualisation of the United Nations Declaration of Human Rights of 1948. At Steichen's request, the last complete copy was given to his country of birth, Luxembourg. It is curated and conserved by Steichen Collections CNA (Centre National de l'Audiovisuel), Luxembourg's state-run national centre for audiovisual art. In 2003, The Family of Man was added to the UNESCO World Documentary Heritage List and is exhibited at Clervaux Castle, Luxembourg.The Family of Man has influenced generations of cultural practitioners. It also inspired Lutz Teutloff who built a collection of humanist photography under the title The Contemporary Family of Man as a contemporary response to Edward Steichen's Opus Magnum. After Teutloff's death, the author successfully brokered and transferred a large part of the collection to the CNA. By securing this private photo collection for the public through the acquisition of the Steichen Collections CNA and the planned dialogical presentation, a bridge to a UNESCO World Documentary Heritage is being built that places a new focus on both collections.von Sabine Weichel ; Erste Gutachterin: Prof. Dr. Jutta Ströter-Bender (Universität Paderborn), Zweiter Gutachter: Prof. Dr. Wolfgang Bender (Universität Bayreuth)Tag der Verteidigung: 28.11.2018Universität Paderborn, Dissertation, 201
Canada and peacebuilding: human security in practice?
No full textCanada has embarked on a new approach to security in the post-Cold War era. Through its Minister for Foreign Affairs, Lloyd Axworthy, Canada has championed the concept of human security. This paper analyses Canada's successes and failures with regard to each of the seven components of human security. The opening chapter of this paper analyses human security from the Canadian perspective. The chapter outlines the traditional definition of security that Canada followed during the Cold War and the redefinition that occurred in the post-Cold War era. The chapter then describes how the theory of human security is being put into practice by Canada through peacebuilding initiatives. The second chapter provides a checklist of the seven components that make up human security and Canada's efforts in relation to each component. The seven components of human security that are analysed are economic, food, health, environmental, personal, community, and political. Canada has made positive progress on some of the components of human security. However, for the most part Canada's human security efforts suffer from a severe lack of funding. Canada does not contribute nearly as many financial resources as other like-minded nations and is in serious danger of losing its good international reputation if it continues to shrink its commitments financially.The original print copy of this thesis may be available here: http://wizard.unbc.ca/record=b119307
Total ozone retrieval from satellite multichannel filter radiometer measurements
No full textA total ozone retrieval model has been developed to process radiance data gathered by a satellite-mounted multichannel filter radiometer (MFR). Extensive effort went into theoretical radiative transfer modeling, a retrieval scheme was developed, and the technique was applied to the MFR radiance measurements. The high quality of the total ozone retrieval results was determined through comparisons with Dobson measurements. Included in the report are global total ozone maps for 20 days between May 12 and July 5, 1977. A comparison of MFR results for 13 days in June 1977 with Dobson spectrophotometer measurements of ozone for the same period showed good agreement: there was a root-mean-square difference of 6.2% (equivalent to 20.2 m.atm.cm). The estimated global total ozone value for June 1977 (296 m.atm.cm) was in good agreement with satellite backscatter ultraviolet data for June 1970 (304 m.atm.cm) and June 1971 (preliminary data--299 m.atm.cm)
The DMSP/MFR total ozone and radiance data base
No full textThis report describes the entries in sufficient detail so that the data base might be useful to others. The characteristics of the MFR sensor are briefly discussed and a complete index to the data base tapes is given
Domestic energy transition in South Africa in the context of rapid urbanization
No full textBibliography: leaves 139-146.This dissertation deals with the energy transition process which is de-fined herein as the process whereby energy consumption patterns o-f fuels used by a population change over time. The focus is on the domestic sector only and specific attention is paid to the black population o-f South Africa which is urbanizing rapidly. The existing data on -fourteen Sub-Saharan African countries are analysed and indications that the energy transition process is occurring are found. The process is influenced by both the level o-f urbanization and economic development but the rates o-f growth of these indicators do not appear to be influential
Atividade antinociceptiva espinhal e supraespinhal da dipirona nos testes da formalina, capsaicina e glutamato :: estudo do mecanismo de ação /
No full textDissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Biológicas
Characterisation of T cell defects in acute myeloid leukaemia
No full textPhDUnderstanding the immune system in patients with cancer and how it interacts with malignant cells is critical for the development of successful immunotherapeutic strategies at a time when novel cancer treatment approaches are required. Acute myeloid leukaemia (AML) results in widespread interaction between the malignant cells and T cells and as such, offers an opportunity to study these interactions. A flow cytometric analysis of T cells in the peripheral blood of patients presenting with AML illustrated that the absolute number of T cells is increased in AML compared with healthy controls. Furthermore, a large population of CD3+56+ cells was identified. These cells are not natural killer T cells but effector T cells that may represent a failing immunosurveillance mechanism. Two technical issues were explored: how to separate T cells from the peripheral blood of newly diagnosed AML patients and the impact of the method of immunomagnetic cell separation on the gene expression profile of healthy T cells. Gene expression profiling was subsequently performed on T cells from AML patients compared with healthy controls. Global differences in transcription were observed suggesting aberrant T cell activation patterns in AML. As differentially regulated genes involved in actin cytoskeletal formation were noted, a functional assessment of the ability of T cells from AML patients to form immunological synapses was performed. This illustrated that although T cells from AML patients can form conjugates with autologous blasts, their ability to form immune synapses and recruit phosphotyrosine signalling molecules to that signalling interface is impaired. Taken together, these findings demonstrate that numerically T cells are plentiful in AML however they are abnormal in terms of the genes they are transcribing and in their interactions with tumour cells. Targeting immunological synapse formation may represent an important means of improving T cell recognition of tumour cells across a range of cancers
