1,747 research outputs found

    Refashioning After the Split: Morocco and the Remaking of French Christianity After the 1905 Law of Separation

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    On December 9, 1905, newspapers announced the French Third Republic had passed the Law on the Separation of the Churches and the State. This law dissolved the complex relationship that had existed between the French state and the Catholic Church and ended the public role of religion. However, while religious conviction seemed to be on the wane within the French metropole, public discourse in the early twentieth century regarding the impending French seizure of Morocco consistently referred to the French populace as “Christians” while the Moroccans were collectively labeled as “Muslim savages.” This thesis argues that the French media, government, and other public figures generated the concept of a “Christian France” in order to underline the moral and civilizational superiority of a supposedly unified French civilization in relation to the inhabitants of Morocco

    Developing a Theory of Instruction: Teaching History in Middle School

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    Preliminary operational results from the Willard solar power system

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    The solar powered system located near Willard, New Mexico, generates mechanical or electrical power at a capacity of 19 kW (25 HP). The solar collection system incorporates east/west tracking parabolic trough collectors with a total aperture area of 1275 sq m (13,720 sq ft). The hot oil type thermal energy storage is sufficient for approximately 20 hours of power system operation. The system utilizes a reaction type turbine in conjunction with an organic Rankine cycle engine. Total collector field efficiency reaches a maximum of 20 percent near the winter solstice and about 50 percent during the summer. During the month of July, 1979, the system pumped 60 percent of the 35,300 cu m (28.6 acre-feet) of water delivered. Operating efficiencies for the turbine component, organic Rankine cycle engine and the complete power system are respectively 65 to 75 percent, 12 to 15 percent and 5 to 6 percent. Significant maintenance time was expended on both the collector and power systems throughout the operational period

    Diversification and hybridization in firm knowledge bases in nanotechnologies

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    The paper investigates the linkages between the characteristics of technologies and the structure of a firms' knowledge base. Nanotechnologies have been defined as converging technologies that operate at the nanoscale, and which require integration to fulfill their economic promises. Based on a worldwide database of nanofirms, the paper analyses the degree of convergence and the convergence mechanisms within firms. It argues that the degree of convergence in a firm's nano-knowledge base is relatively independent from the size of the firm's nano-knowledge base. However, while firms with small nano-knowledge bases tend to exploit convergence in each of their patents/publications, firms with large nano-knowledge bases tend to separate their nano-R&D activities in the different established fields and achieve diversity through the juxtaposition of the output of these independent activitie

    Some Social Aspects of Deafness

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    Author Institution: Superintendent, Ohio State School for the Dea

    Weed Control for Reduced Tillage Systems

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    MCViNE -- An object oriented Monte Carlo neutron ray tracing simulation package

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    MCViNE (Monte-Carlo VIrtual Neutron Experiment) is a versatile Monte Carlo (MC) neutron ray-tracing program that provides researchers with tools for performing computer modeling and simulations that mirror real neutron scattering experiments. By adopting modern software engineering practices such as using composite and visitor design patterns for representing and accessing neutron scatterers, and using recursive algorithms for multiple scattering, MCViNE is flexible enough to handle sophisticated neutron scattering problems including, for example, neutron detection by complex detector systems, and single and multiple scattering events in a variety of samples and sample environments. In addition, MCViNE can take advantage of simulation components in linear-chain-based MC ray tracing packages widely used in instrument design and optimization, as well as NumPy-based components that make prototypes useful and easy to develop. These developments have enabled us to carry out detailed simulations of neutron scattering experiments with non-trivial samples in time-of-flight inelastic instruments at the Spallation Neutron Source. Examples of such simulations for powder and single-crystal samples with various scattering kernels, including kernels for phonon and magnon scattering, are presented. With simulations that closely reproduce experimental results, scattering mechanisms can be turned on and off to determine how they contribute to the measured scattering intensities, improving our understanding of the underlying physics.Comment: 34 pages, 14 figure

    Electron doping evolution of the magnetic excitations in NaFe1x_{1-x}Cox_xAs

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    We use time-of-flight (ToF) inelastic neutron scattering (INS) spectroscopy to investigate the doping dependence of magnetic excitations across the phase diagram of NaFe1x_{1-x}Cox_xAs with x=0,0.0175,0.0215,0.05,x=0, 0.0175, 0.0215, 0.05, and 0.110.11. The effect of electron-doping by partially substituting Fe by Co is to form resonances that couple with superconductivity, broaden and suppress low energy (E80E\le 80 meV) spin excitations compared with spin waves in undoped NaFeAs. However, high energy (E>80E> 80 meV) spin excitations are weakly Co-doping dependent. Integration of the local spin dynamic susceptibility χ(ω)\chi^{\prime\prime}(\omega) of NaFe1x_{1-x}Cox_xAs reveals a total fluctuating moment of 3.6 μB2\mu_B^2/Fe and a small but systematic reduction with electron doping. The presence of a large spin gap in the Co-overdoped nonsuperconducting NaFe0.89_{0.89}Co0.11_{0.11}As suggests that Fermi surface nesting is responsible for low-energy spin excitations. These results parallel Ni-doping evolution of spin excitations in BaFe2x_{2-x}Nix_xAs2_2, confirming the notion that low-energy spin excitations coupling with itinerant electrons are important for superconductivity, while weakly doping dependent high-energy spin excitations result from localized moments.Comment: 14 pages, 16 figure

    Absence of long-range chemical ordering in equimolar FeCoCrNi

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    Equimolar FeCoCrNi alloys have been the topic of recent research as "high-entropy alloys," where the name is derived from the high configurational entropy of mixing for a random solid solution. Despite their name, no systematic study of ordering in this alloy system has been performed to date. Here, we present results from anomalous x-ray scattering and neutron scattering on quenched and annealed samples. An alloy of FeNi_3 was prepared in the same manner to act as a control. Evidence of long-range chemical ordering is clearly observed in the annealed FeNi_3 sample from both experimental techniques. The FeCoCrNi sample given the same heat treatment lacks long-range chemical order
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