28,162 research outputs found

    Plane stress analysis of an edge-stiffened rectangular plate, taking into account bending and shear stiffness of the stiffeners

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    Plane stress analysis using Fourier series of edge stiffened isotropic or orthotropic elastic rectangular plate subjected to prescribed temperature distribution and boundary load

    Anisotropic superconducting properties of aligned Sm0.95_{0.95}La0.05_{0.05}FeAsO0.85_{0.85}F0.15_{0.15} microcrystalline powder

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    The Sm0.95_{0.95}La0.05_{0.05}FeAsO0.85_{0.85}F0.15_{0.15} compound is a quasi-2D layered superconductor with a superconducting transition temperature Tc_c = 52 K. Due to the Fe spin-orbital related anisotropic exchange coupling (antiferromagnetic or ferromagnetic fluctuation), the tetragonal microcrystalline powder can be aligned at room temperature using the field-rotation method where the tetragonal ab\it{ab}-plane is parallel to the aligned magnetic field Ba_{a} and c\it{c}-axis along the rotation axis. Anisotropic superconducting properties with anisotropic diamagnetic ratio χc/χab\chi_{c}/\chi_{ab}\sim 2.4 + 0.6 was observed from low field susceptibility χ\chi(T) and magnetization M(Ba_{a}). The anisotropic low-field phase diagram with the variation of lower critical field gives a zero-temperature penetration depth λc\lambda_{c}(0) = 280 nm and λab\lambda_{ab}(0) = 120 nm. The magnetic fluctuation used for powder alignment at 300 K may be related with the pairing mechanism of superconductivity at lower temperature.Comment: 4 pages, 6 figure

    The Fall of Emily Grierson: a Jungian Analysis of a Rose for Emily

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    This paper discusses the tragic life of Faulkner\u27s Emily Grierson, a life dominated by patriarchy and traditional Southern social values, which concludes with her living as a lonely recluse in her family\u27s decaying aristocratic house for more than forty years until her death. The key of the tragedy is her father, who isolates Emily from the outside world and tortures her with traditional patriarchal rules and Southern family duty. Emily is expected to lead a life like other girls; however, under the burden of old-fashioned, patriarchal responsibilities, her inner world collapses. This study uses the Jungian concepts of archetypes, persona and shadow, anima and animus to interpret Emily\u27s transitions and her fall. By examining the process through the lens of Jungian theories, the aspects that affect her fall in the patriarchal, aristocratic society, as well as the inherited social values, can be revealed and specified

    High Input Impedance Voltage-Mode Universal Biquadratic Filters With Three Inputs Using Three CCs and Grounding Capacitors

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    Two current conveyors (CCs) based high input impedance voltage-mode universal biquadratic filters each with three input terminals and one output terminal are presented. The first circuit is composed of three differential voltage current conveyors (DVCCs), two grounded capacitors and four resistors. The second circuit is composed of two DVCCs, one differential difference current conveyor (DDCC), two grounded capacitors and four grounded resistors. The proposed circuits can realize all the standard filter functions, namely, lowpass, bandpass, highpass, notch and allpass filters by the selections of different input voltage terminals. The proposed circuits offer the features of high input impedance, using only grounded capacitors and low active and passive sensitivities. Moreover, the x ports of the DVCCs (or DDCC) in the proposed circuits are connected directly to resistors. This design offers the feature of a direct incorporation of the parasitic resistance at the x terminal of the DVCC (DDCC), Rx, as a part of the main resistance

    An Economy-wide Analysis of Impacts of WTO Tiered Formula for Tariff Reduction on Taiwan

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    In this study we use Taiwan as a case study to provide an economy-wide analysis of impacts on Taiwan of WTO tariff reduction schemes with different combinations of thresholds and reduction rates. The model we utilized in this study is Taiwan General Equilibrium Model with a WTO module (TAIGEM-WTO, hereafter) that is a multi-sectoral computable general equilibrium (CGE) model of the Taiwan's economy derived from Australian ORANI model (Dixon, Parmenter, Sutton and Vincent, 1982). Simulation results show that results are more sensitive to the scheme of tariff-reduction (i.e., Category 1, 2, and 3) than the tiered levels (i.e., A, B, C, and D) and as a strategy we should pay more attention to the arguments related to the amounts of tariff-reduction. Moreover, changes in nominal average tariff rates are more sensitive and shocks to the economy are more severe when we change the tariff reduction categories rather than the tiered levels. This conclusion also applies to the tiered reduction case when only sensitive products are considered. Finally, simulations with sector's bound rate calculated using arithmetic means have bigger effects than those using import values as weights. Therefore, sector's bound rate using import values as weights would be preferred.Computable General Equilibrium (CGE), Tiered Formula, WTO, International Relations/Trade,

    Bounce-free spherical hydrodynamic implosion

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    In a bounce-free spherical hydrodynamic implosion, the post-stagnation hot core plasma does not expand against the imploding flow. Such an implosion scheme has the advantage of improving the dwell time of the burning fuel, resulting in a higher fusion burn-up fraction. The existence of bounce-free spherical implosions is demonstrated by explicitly constructing a family of self-similar solutions to the spherically symmetric ideal hydrodynamic equations. When applied to a specific example of plasma liner driven magneto-inertial fusion, the bounce-free solution is found to produce at least a factor of four improvement in dwell time and fusion energy gain.Comment: accepted by Phys. Plasmas (Nov. 7, 2011); for Ref. 11, please see ftp://ftp.lanl.gov/public/kagan/liner_evolution.gi
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