6,772 research outputs found
Howard, George Elliott (1849-1928)
George Elliott Howard, a distinguished social scientist trained initially in history, rose to the presidency of the American Sociological Society in 1917. Howard earned the A.B. in 1876 at the University of Nebraska. Following two years of advanced study in Germany, Howard joined the Nebraska faculty in 1879. Howard\u27s most prominent Nebraska student from this period, Amos Griswold Warner, later wrote American Charities (1894) - a standard classic in the field. Howard was named to the prestigious First Faculty of Stanford University in 1891
"We are GREAT Britain": British newspaper narratives during the London 2012 Olympic Games
British newspaper narratives were examined during the 2012 London Olympic Games to discern how the British press promoted specific “narratives of the nation.” For the London-based British press, the home Olympics became the ideal medium not only to sell newspapers and electronic format subscriptions, but also to (re)present their views on Britain and what it stood for. Using a qualitative textual analysis methodology, this study drew on Anderson’s theory of the “imagined community” and Edmunds and Turner’s concepts of benign and malign nationalism to provide insights about how Britishness was framed. For a country struggling to shake off the economic recession, early narratives about the Games were imbued with concerns about the escalating costs of hosting the Games and fears of terrorism. However, the critical early tone of British newspaper narratives was supplanted with uplifting, inspirational stories about the unprecedented success of Team GB athletes. This provided British journalists with an opportunity to reengineer Britishness to reinforce some traditional values and inject some new inclusive ones. Although at times, complex, contested and contradictory, the narratives generally linked the internationalism of the Olympics with a progressive, benign version of Britishness that emphasized inclusion, tolerance, and creativity and, at least temporarily, redefined how Britain regarded itself and was viewed.</jats:p
The Academic Data Librarian Profession in Canada: History and Future Directions
ACRL publication
Databrarianship: The Academic Data Librarian in Theory and Practice can by purchased at the ALA store:
http://www.alastore.ala.org/detail.aspx?ID=1177
Symmetry group analysis of an ideal plastic flow
In this paper, we study the Lie point symmetry group of a system describing
an ideal plastic plane flow in two dimensions in order to find analytical
solutions. The infinitesimal generators that span the Lie algebra for this
system are obtained. We completely classify the subalgebras of up to
codimension two in conjugacy classes under the action of the symmetry group.
Based on invariant forms, we use Ansatzes to compute symmetry reductions in
such a way that the obtained solutions cover simultaneously many invariant and
partially invariant solutions. We calculate solutions of the algebraic,
trigonometric, inverse trigonometric and elliptic type. Some solutions
depending on one or two arbitrary functions of one variable have also been
found. In some cases, the shape of a potentially feasible extrusion die
corresponding to the solution is deduced. These tools could be used to thin,
curve, undulate or shape a ring in an ideal plastic material
Ecology and management of plum curculio, Conotrachelus nenuphar [Coleoptera :Curculionidae], in apple orchards
Le charançon de la prune (Conotrachelus nénuphar) est un insecte originaire de l'Amérique du Nord. Il s'attaque aux fruits à pépins et à noyaux de l'est des États-Unis et du Canada. Il est un ravageur prépondérant en vergers de pommiers (Maluspumila) au Québec. Au printemps, les adultes se déplacent de leurs sites d'hibernation, localisés principalement dans les boisés, vers les vergers. Avant la nouaison, l'activité de ces insectes est surtout nocturne, mais elle s'étend à toute la journée dès l'apparition des fruits. Les larves quittent le fruit au moment de la chute physiologique, et la pupaison s'effectue dans le sol. La nouvelle génération d'adultes apparaît en août, et se nourrit de fruits jusqu'à l'automne, puis retourne vers les sites d’hibernation. Plusieurs éléments de la bio-écologie du charançon sont méconnus, notamment les relations entre l’insecte et l’hôte, le comportement, la dispersion, le mode de déplacement, la reconnaissance des plantes hôtes et des sites d’hibernation, l’orientation, et les seuils économiques. Il n’existe actuellement aucune méthode fiable pour dépister ce charançon, et aucun moyen biologique de lutte contre ce ravageur. Cependant, des études récentes sur le comportement et l’activité du charançon de la prune en conditions semi-naturelles et naturelles pourraient permettre le développement de stratégies de lutte plus efficaces. Ces travaux sont présentés ici de même qu’une revue des méthodes de lutte (chimique, biologique, génétique, mécanique et culturale) envisageables contre le charançon de la prune.Plum curculio (Conotrachelus nenuphar) is a native pest of pome and stone fruit in eastern North America. It is a key pest of apple (Malus pumila) orchards in Quebec. In spring, adults disperse primarily from woodland overwintering sites to apple orchards. Before fruit set, the beetles are mainly nocturnal. As fruits become available for oviposition, adults extend their activity to the daytime. Full grown larvae found in dropped apples in June (June drop) enter the soil to pupate. The summer brood emerges in August, feeds on the remaining fruit throughout the fall and then disperses to suitable overwintering sites. Little is known of its community and host plant relationships, dispersal behavior, factors influencing its mode of locomotion, choice of food sources, overwintering sites, micro-habitat selection, orientation, and action threshold. Commercially available biocontrol agents are not effective, and convenient and reliable monitoring techniques for the timing of sprays have not been developed. However, recent field and insectary studies on the behavior and activity of plum curculio adults may allow us to improve the efficiency of control strategies. These findings are presented here, together with their implications for control of the plum curculio by modifying its habitat, and by better timing and location of sprays and other interventions. This paper also includes brief reviews of biological controls, insect growth regulators, and genetic controls for plum curculio
Fully 3D Monte Carlo image reconstruction in SPECT using functional regions
Image reconstruction in Single Photon Emission Computed Tomography (SPECT) is
affected by physical effects such as photon attenuation, Compton scatter and
detector response. These effects can be compensated for by modeling the
corresponding spread of photons in 3D within the system matrix used for
tomographic reconstruction. The fully 3D Monte Carlo (F3DMC) reconstruction
technique consists in calculating this system matrix using Monte Carlo
simulations. The inverse problem of tomographic reconstruction is then solved
using conventional iterative algorithms such as maximum likelihood expectation
maximization (MLEM). Although F3DMC has already shown promising results, its
use is currently limited by two major issues: huge size of the fully 3D system
matrix and long computation time required for calculating a robust and accurate
system matrix. To address these two issues, we propose to calculate the F3DMC
system matrix using a spatial sampling matching the functional regions to be
reconstructed. In this approach, different regions of interest can be
reconstructed with different spatial sampling. For instance, a single value is
reconstructed for a functional region assumed to contain uniform activity. To
assess the value of this approach, Monte Carlo simulations have been performed
using GATE. Results suggest that F3DMC reconstruction using functional regions
improves quantitative accuracy compared to the F3DMC reconstruction method
proposed so far. In addition, it considerably reduces disk space requirement
and duration of the simulations needed to estimate the system matrix. The
concept of functional regions might therefore make F3DMC reconstruction
practically feasible.Comment: 6 pages, 3 figures, 3rd International Conference on maging
Technologies in Biomedical Sciences : ITBS2005, Milos Island, Greece, 25-28
september 2005, submitted to NIM
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