61,021 research outputs found

    REDIRECTING STATE ECONOMIC GROWTH

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    Community/Rural/Urban Development,

    Financing the U.S. Health System: Issues and Options for Change

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    Explores key issues of health reform and options for financing health care -- redirecting funds to more effective uses, rolling back tax cuts, modifying tax exclusions for health benefits, an employer play-or-pay model, and a value-added tax

    Enhancing and redirecting carbon nanotube photoluminescence by an optical antenna

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    We observe the angular radiation pattern of single carbon nanotubes' photoluminescence in the back focal plane of a microscope objective and show that the emitting nanotube can be described by a single in-plane point dipole. The near-field interaction between a nanotube and an optical antenna modifies the radiation pattern that is now dominated by the antenna characteristics. We quantify the antenna induced excitation and radiation enhancement and show that the radiative rate enhancement is connected to a directional redistribution of the emission

    Redirecting US Diplomacy

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    Review of simulating four classes of window materials for daylighting with non-standard BSDF using the simulation program Radiance

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    This review describes the currently available simulation models for window material to calculate daylighting with the program "Radiance". The review is based on four abstract and general classes of window materials, depending on their scattering and redirecting properties (bidirectional scatter distribution function, BSDF). It lists potential and limits of the older models and includes the most recent additions to the software. All models are demonstrated using an exemplary indoor scene and two typical sky conditions. It is intended as clarification for applying window material models in project work or teaching. The underlying algorithmic problems apply to all lighting simulation programs, so the scenarios of materials and skies are applicable to other lighting programs

    Evaluating Interaction Techniques in an Interactive Workspace: Comparing the Effectiveness of a Textual Interface, Virtual Paths Interface, and ARIS

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    ARIS is an interface that enables users to visually relocate applications and redirect input among myriad devices in an interactive workspace. While we previously claimed that ARIS is more effective than other interfaces for performing these tasks, this work seeks to empirically validate our claim. We compared the use of ARIS to an interaction design of a text-based and virtual paths interface for relocating applications and redirecting input in an interactive workspace. Results show that (i) users can relocate applications and redirect input faster with ARIS than a text-based interface, (ii) users commit fewer errors with ARIS than a text-based interface, (iii) users experience less workload and are more satisfied with ARIS than a text-based interface, and (iv) ARIS was comparable to the use of a virtual paths interface. ARIS is more effective than an interaction design that requires a user to mentally map and select textual identifiers, while supporting functionality beyond that of a virtual paths interface

    A computationally efficient simulation method for optimizing front contacts of concentrator multijunction solar cells

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    In this work, a novel multidiode model is proposed for optimizing the front grid of multijunction solar cells operating under concentration conditions. The model allows for quickly exploring the maximum achievable efficiency under a wide range of operating conditions and design parameters such as the redirecting capability, period and width of the fingers, the light concentration, and the metal and emitter sheet resistivity. The proposed multidiode model shows to be consistent with experimental data and with more complex modeling approaches such as the simulation program with integrated circuit emphasis (SPICE) model

    Non-nequilibrium model on Apollonian networks

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    We investigate the Majority-Vote Model with two states (−1,+1-1,+1) and a noise qq on Apollonian networks. The main result found here is the presence of the phase transition as a function of the noise parameter qq. We also studies de effect of redirecting a fraction pp of the links of the network. By means of Monte Carlo simulations, we obtained the exponent ratio γ/ν\gamma/\nu, β/ν\beta/\nu, and 1/ν1/\nu for several values of rewiring probability pp. The critical noise was determined qcq_{c} and U∗U^{*} also was calculated. The effective dimensionality of the system was observed to be independent on pp, and the value Deff≈1.0D_{eff} \approx1.0 is observed for these networks. Previous results on the Ising model in Apollonian Networks have reported no presence of a phase transition. Therefore, the results present here demonstrate that the Majority-Vote Model belongs to a different universality class as the equilibrium Ising Model on Apollonian Network.Comment: 5 pages, 5 figure
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