14,239 research outputs found
Point contact studies of rare earth-transition metal compounds
No full textMechanical point contact techniques have been used to study the spin-dependent properties of rare earth-transition metal compounds and transition metal thin films and bi-layers. The transport spin polarisation of Cu, Co and Fe has been measured using point contact Andreev reflection (PCAR), and found to be in good agreement with previous results. In addition, bi-layers of Co/Y and Co/Cu have been used to
demonstrate suppression of the spin polarisation of the Co underlayer via a nonmagnetic capping layer. The spin diffusion length of Cu has been estimated to be larger than 600nm. The spin polarisation of molecular beam epitaxy (MBE) deposited
RFe2 (R = Dy,Y,Er) Laves phase intermetallic films was determined, and found to be close to that of Fe. This suggests that the spin transport behaviour in these materials is
dominated by the Fe sub-lattice. Preliminary evidence for spin transfer torque effects in an RFe2 multilayer and tri-layer is also presented and discussed. Point contact measurements of an ErFe2/YFe2 multilayer at 4.2K show a step in the differential
resistance at a positive current value. It is suggested that this is due to the formation of a nano-domain beneath the tip. Measurements of a DyFe2/YFe2/DyFe2 tri-layer show
peaks in differential resistance for negative applied currents. This is tentatively attributed to the generation of spin waves within the YFe2 layer
Ex ante analysis of U.S. agricultural policy reform using a model of international trade with storage under rational expectations
Get PDFContains a dynamic programming algorithm for projecting policy parameters based on a storage model of international markets featuring uncertainty, forward-looking rational expectations and non-negative storage. This algorithm is motivated by the need for a non-analytical solution to the competitive equilibrium in a storage model of U.S. and foreign cotton policy regimes. Obtaining an analytical solution is difficult, except in a limited number of special cases. The numerical solution algorithm essentially consists of multiple nested numerical approximations that reach convergence simultaneously when the relationship between domestic storage and expected farm price achieves stationarity. Given the stationary relationship between storage and expected farm price, we then run the model forward in time (given a sequence of annual realized yield disturbances) under alternative policy regimes representing FACT and FAIR.Faculty working paper series (Morrison School of Agribusiness and Resource Management) ; MSABR 99-0
Interview with Nicholas Christopher, author of Somewhere in the Night: Film Noir and the American City
Get PDFInterview with Nicholas Christopher, author of Somewhere in the Night: Film Noir and the American Cit
Spiritual Vertigo: Illness, Affect and Modernity in Prelude to Christopher
No full textIn Eleanor Dark’s unpublished play draft, Mr Robinson [1942], Evan, a medical doctor, despairs of what he sees to be the inevitable future of psychological collapse. ‘I see it in my practice every day,’ he says, ‘and so does every other doctor’:
Nerves. Hysteria. Depression. Chronic tiredness. Anxiety. Neuroses of every kind […] And I give him a tonic and send him away, and all the time I know that what’s wrong with him is life – life that won’t give him any sense of peace or serenity, life that doesn’t make sense, life that won’t keep steady … I tell you, Mother, it’s only a matter of degree – we’re all psychologically ill – we’re all suffering from a sort of spiritual vertigo …
In another unpublished work, ‘Magic Wands’, Dark again notes that ‘any psychiatrist, I think, will agree that the only things which are harmful to all minds are certain emotions – fear, guilt, hatred, anxiety, jealousy and so on ...’ In this essay I want to think about the way in which this ‘spiritual vertigo,’ this sense of pervasive psychological distress as a result of negative affect, is explored as a modern condition in Dark’s novel, Prelude to Christopher (1934). The work is often said to be Australia’s first modernist novel, and indeed in Barbara Brooks’ coda (1999) to the Halstead Books publication of the novel, she uses the term ‘risk’ three times to describe Dark’s modernist experiment, arguing that ‘It’s a book that lives on the edge, a book about arguing passionately for your beliefs and rights, about taking risks and saying no to blind conformism’ (186), that it contains ‘an argument about the risks of a scientific model as a basis for controlling human behaviour’ (189), and that it is part of a ‘continuing story’ in a tradition of Australian women’s writing ‘about taking risks, asking questions, about women, especially, who refuse to conform’ (189). In this essay I will argue that Prelude to Christopher not only constitutes an extraordinary experiment in its form but, I will show, in the way it positions emotion itself as a risk to the stability of the nation. In its attention to the threat of madness, the novel articulates an anxiety about the future to come: the risk of psychological and cultural collapse, the uncertainty about the child to be born, and the hazards associated with the construction of a new nation. In its perilous implication that ‘we’re all psychologically ill,’ Prelude to Christopher suggests an inevitable dystopia, a sharp critique of the idealisation of the nation and thus marking the beginning of modernist social critique in Australia
Jen Howe to take position with Georgia Tech; Christopher Morrison named vice president of advancement
Get PDFUniversity of Dayton President Eric F. Spina announced today that Vice President of Advancement Jennifer Howe has accepted a position with Georgia Tech in Atlanta, Georgia, effective July 31. Spina named Christopher Morrison, associate vice president and director of campaign operations, to succeed Howe as vice president
Yves Gaucher and Christopher Pratt
No full textMorrison compares and contrasts the prints of abstract artist Gaucher with Pratt's representational works. Biographical notes
Matt Christopher Papers - Accession 1309
Get PDFThe collection includes letters written by the children’s book author, Matt Christopher, to his son, Marty Christopher. Many of the letters also contain newspaper articles of interest to Matt Christopher, which deal with local sports teams, his writing career, his participation in an exhibition baseball game against the New York Giants in 1938, and other of general interest. Most of the letters are personal in nature, however, a majority of the letters delve into Matt Christopher’s writing career, personal interests, the author’s health, as well as his family life.https://digitalcommons.winthrop.edu/manuscriptcollection_findingaids/2649/thumbnail.jp
Matt Christopher Papers - Accession 1221
Get PDFMatt Christopher (1917-1997) was a prolific author of children’s books having written over 100 books as well as over 300 short stories, articles, poems, and screenplays. Most of his writings dealt with sports themes, but he also wrote fantasy and mystery themed stories as well. The Matt Christopher Papers consist of both published and unpublished manuscripts, articles, and short stories. Also included are personal and business correspondence, biographical information, scrapbooks, photographs, and memorabilia.https://digitalcommons.winthrop.edu/manuscriptcollection_findingaids/1976/thumbnail.jp
Dr. Christopher von Rueden – Faculty Author Interview
No full textDr. Christopher von Rueden, an anthropologist and Assistant Professor in the Jepson School of Leadership Studies, discusses a recent article entitled, “Men’s status and reproductive success in 33 non-industrial societies: Effects of subsistence, marriage system, and reproductive strategy,” which he co-authored with Dr. Adrian Jaeggi, an anthropologist at Emory University. Their findings were recently published in the journal, Proceedings of the National Academy of Sciences
Vagal nerve stimulation can elicit both activation and inhibition of brown adipose tissue sympathetic nerve activity (1131.6)
No full textThe dependence of BAT thermogenesis on the availability of metabolic substrates suggests that metabolic signals from the viscera could influence the sympathetic outflow driving BAT thermogenesis. Viscerosensory afferents in the proximal end of the sectioned left cervical vagus nerve were activated with electrical stimulation in anesthetized, ventilated rats while recording the SNA to the contralateral interscapular BAT pad. Paired-pulse VNS delivered once every 5 sec evoked excitatory evoked potentials in BAT SNA with a peak latency of ~ 180 ms, followed by a ~2 s period of quiescent BAT SNA. Within a few seconds of stimulus onset, continuous, single-pulse VNS at 2 Hz produced a complete inhibition of cold-evoked BAT SNA that was sustained for at least 2 hrs of maintained VNS. Similarly, activation of neurons in the intermediate nucleus of the solitary tract (iNTS), at the level of the area postrema, with nanoinjections (60 pmol) of bicuculline also inhibits the VNS-evoked excitation of BAT SNA. Inhibition of neurons in the rostral ventromedial medullary raphe pallidus region also eliminates the VNS-evoked excitation of BAT SNA. These data support the existence of populations of vagal afferents whose stimulation can (1) increase BAT SNA via activation of BAT sympathetic premotor neurons or (2) inhibit BAT SNA via activation of BAT sympathoinhibitory neurons in the iNTS (see Am. J. Physiol. Regul. Integr. Comp. Physiol., 299:R277-R290, 2010. PMC2904145)
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