2,416,774 research outputs found

    Measuring and Predicting Importance of Objects in Our Visual World

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    Associating keywords with images automatically is an approachable and useful goal for visual recognition researchers. Keywords are distinctive and informative objects. We argue that keywords need to be sorted by 'importance', which we define as the probability of being mentioned first by an observer. We propose a method for measuring the `importance' of words using the object labels that multiple human observers give an everyday scene photograph. We model object naming as drawing balls from an urn, and fit this model to estimate `importance'; this combines order and frequency, enabling precise prediction under limited human labeling. We explore the relationship between the importance of an object in a particular image and the area, centrality, and saliency of the corresponding image patches. Furthermore, our data shows that many words are associated with even simple environments, and that few frequently appearing objects are shared across environments

    Application of a system modification technique to dynamic tuning of a spinning rotor blade

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    An important consideration in the development of modern helicopters is the vibratory response of the main rotor blade. One way to minimize vibration levels is to ensure that natural frequencies of the spinning main rotor blade are well removed from integer multiples of the rotor speed. A technique for dynamically tuning a finite-element model of a rotor blade to accomplish that end is demonstrated. A brief overview is given of the general purpose finite element system known as Engineering Analysis Language (EAL) which was used in this work. A description of the EAL System Modification (SM) processor is then given along with an explanation of special algorithms developed to be used in conjunction with SM. Finally, this technique is demonstrated by dynamically tuning a model of an advanced composite rotor blade

    Alternatives to Fiscal Austerity in Spain

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    This paper looks at the planned austerity measures in Spain, the rationale for the spending cuts and tax increases, likely outcomes for future debt-to-GDP ratios, and the probable results of alternative policies.IMF, Spain, EU, European Central Bank, deficit spending, budget deficits, fiscal policy, monetary policy

    Experiments with phase transitions at very high pressure

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    Diamond cells were constructed for use to 1 Mbar. A refrigerator for cooling diamond cells was adapted for studies between 15 and 300 K. A cryostat for superconductivity studies between 1.5 to 300 K was constructed. Optical equipment was constructed for fluorescence, transmission, and reflectance studies. X-ray equipment was adapted for use with diamond cells. Experimental techniques were developed for X-ray diffraction studies using synchrotron radiation. AC susceptibility techniques were developed for detecting superconducting transitions. The following materials were studied: compressed solidified gases (Xe, Ar), semiconductors (Ge, Si, GaAs), superconductors (Nb3Ge, Nb3Si, Nb3As, CuCl), molecular crystals (I)

    A spoonful of sugar: the application of glycopolymers in therapeutics

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    Glycopolymers, synthetic polymers displaying carbohydrate moieties, have been linked to many potential applications at the biology–chemistry interface. One area that holds particular promise is the employment of glycopolymers as vehicles for therapeutics or as therapeutics themselves. This review summarises some of the more prominent examples as well as those in the early stages of development

    Dependence of the Superconducting Transition Temperature of MgB2 on Pressure to 20 GPa

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    The dependence of Tc on nearly hydrostatic pressure has been measured for an isotopically pure (11B) MgB2 sample in a helium-loaded diamond-anvil-cell to nearly 20 GPa. Tc decreases monotonically with pressure from 39.1 K at ambient pressure to 20.9 K at 19.2 GPa. The initial dependence is the same as that obtained earlier (dTc/dP = -1.11(2) K/GPa) on the same sample in a He-gas apparatus to 0.7 GPa. The observed pressure dependence Tc(P) to 20 GPa can be readily described in terms of simple lattice stiffening within standard phonon-mediated BCS superconductivity.Comment: 9 pages, 3 figure

    Madrid, Spain

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    STEP Category: InternshipsThis is presentation of my STEP Signature Project through the Ohio State University. I participated in the Fisher College of Business's Summer Global Internship Program in Madrid, Spain for a duration of 8 weeks throughout the summer of 2019.The Ohio State University Second-year Transformational Experience Program (STEP)Academic Major: Financ

    Magnetometer uses bismuth-selenide

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    Characteristics of bismuth-selenide magnetometer are described. Advantages of bismuth-selenide magnetometer over standard magnetometers are stressed. Thermal stability of bismuth-selenide magnetometer is analyzed. Linearity of output versus magnetic field over wide range of temperatures is reported

    Counting lattice points and o-minimal structures

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    Let Λ\Lambda be a lattice in Rn\R^n, and let ZRm+nZ\subseteq \R^{m+n} be a definable family in an o-minimal structure over R\R. We give sharp estimates for the number of lattice points in the fibers ZT=xRn:(T,x)ZZ_T={x\in \R^n: (T,x)\in Z}. Along the way we show that for any subspace ΣRn\Sigma\subseteq\R^n of dimension j>0j>0 the jj-volume of the orthogonal projection of ZTZ_T to Σ\Sigma is, up to a constant depending only on the family ZZ, bounded by the maximal jj-dimensional volume of the orthogonal projections to the jj-dimensional coordinate subspaces.Comment: Revised versio
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