5,194 research outputs found

    Hyperbolic cone-manifolds, short geodesics, and Schwarzian derivatives

    Get PDF
    Given a geometrically finite hyperbolic cone-manifold, with the cone-singularity sufficiently short, we construct a one-parameter family of cone-manifolds decreasing the cone-angle to zero. We also control the geometry of this one-parameter family via the Schwarzian derivative of the projective boundary and the length of closed geodesics

    The space of Kleinian punctured torus groups is not locally connected

    Full text link
    We show that the space of Kleinian punctured torus groups is not locally connected

    Introducing Marijuana Law into the Legal Writing Curriculum

    Get PDF
    Interest in marijuana law continues to grow, due in large part to the complicated and rapidly evolving landscape of marijuana laws in the United States. Nearly every day, newspapers report on new or proposed legislation and the legal controversies that have arisen with regard to this evolving landscape. There are now several marijuana-law blogs on the Internet, Congress is considering sweeping legislation that would essentially grant significant deference to the individual states, and public opinion continues to move in favor of increased legalization. For the last two years, Newsweek magazine has published special editions devoted exclusively to marijuana law and the movement toward legalization, with cover captions “WEED NATION,” and featuring a large red, white, and blue cannabis leaf. In light of this growing interest in marijuana law, we propose that the topic is ripe for the legal writing classroom. Not only is marijuana law a rapidly evolving area of law, and therefore a fertile source of new legal issues, it also is an area of significant interest for many students, and it raises many fascinating legal issues—civil, criminal, and constitutional. This article therefore proposes that legal writing professors consider incorporating marijuana law issues into their first-year courses, and it offers some ideas for how they might create marijuana-related legal writing problems

    Introducing Marijuana Law into the Legal Writing Curriculum

    Get PDF
    Interest in marijuana law continues to grow, due in large part to the complicated and rapidly evolving landscape of marijuana laws in the United States. Nearly every day, newspapers report on new or proposed legislation and the legal controversies that have arisen with regard to this evolving landscape. There are now several marijuana-law blogs on the Internet, Congress is considering sweeping legislation that would essentially grant significant deference to the individual states, and public opinion continues to move in favor of increased legalization. For the last two years, Newsweek magazine has published special editions devoted exclusively to marijuana law and the movement toward legalization, with cover captions “WEED NATION,” and featuring a large red, white, and blue cannabis leaf. In light of this growing interest in marijuana law, we propose that the topic is ripe for the legal writing classroom. Not only is marijuana law a rapidly evolving area of law, and therefore a fertile source of new legal issues, it also is an area of significant interest for many students, and it raises many fascinating legal issues—civil, criminal, and constitutional. This article therefore proposes that legal writing professors consider incorporating marijuana law issues into their first-year courses, and it offers some ideas for how they might create marijuana-related legal writing problems

    Plasmatron Reformation of Renewable Fuels

    Get PDF
    The characteristics of plasmatron reformers for the generation of hydrogen rich gas using renewable fuels is discussed. Biodiesel and ethanol have been investigated. Operating as a function of the air/fuel ratio is evaluated, as well as the impact of the plasma. I

    Experimental Investigation of Plasma Assisted Reforming of Methane II: Start-up

    Get PDF

    Experimental Investigation of Plasma Assisted Reforming of Propane

    Get PDF
    Plasmatron fuel converters have been investigated for the conversion of a wide range of fuels. This paper is one of a series of paper investigating the performance of plasmatron reformers. In this paper a systematic experimental investigation is carried out of the reformation of propane in a plasmatron fuel reformer. The effect upon reformation of flow rate distribution and electrical power level are investigated for a given geometry that has been thoroughly studied with a similar gaseous fuel, methane. A limited set of startup experiments with propane are discussed 1

    Experimental Investigation of Plasma Assisted Reforming of Methane I: Steady State Operation

    Get PDF
    Plasmatron fuel converters have been investigated for the conversion of a wide range of fuels. This paper is one of a series of paper investigating the performance of plasmatron methane reformers. In this paper a systematic experimental investigation is carried out of the reformation of methane in a plasmatron fuel reformer at steady state conditions. The effect upon reformation of flow rate distribution and electrical power level are investigated for a given geometry that has been thoroughly studied with a similar gaseous fuel, propane. Startup issues are investigated in an accompanying paper. 1

    Quantum and classical correlations in waveguide lattices

    Full text link
    We study quantum and classical Hanbury Brown-Twiss correlations in waveguide lattices. We develop a theory for the propagation of photon pairs in the lattice, predicting the emergence of nontrivial quantum interferences unique to lattice systems. Experimentally, we observe the classical counterpart of these interferences using intensity correlation measurements. We discuss the correspondence between the classical and quantum correlations, and consider path-entangled input states which do not have a classical analogue. Our results demonstrate that waveguide lattices can be used as a robust and highly controllable tool for manipulating quantum states, and offer new ways of studying the quantum properties of light.Comment: Comments are welcom

    Quantum walks of correlated particles

    Get PDF
    Quantum walks of correlated particles offer the possibility to study large-scale quantum interference, simulate biological, chemical and physical systems, and a route to universal quantum computation. Here we demonstrate quantum walks of two identical photons in an array of 21 continuously evanescently-coupled waveguides in a SiOxNy chip. We observe quantum correlations, violating a classical limit by 76 standard deviations, and find that they depend critically on the input state of the quantum walk. These results open the way to a powerful approach to quantum walks using correlated particles to encode information in an exponentially larger state space
    • …
    corecore