16,890 research outputs found
Wrong Tomorrow, Wrong Yesterday, but not Today: On Sliding into Evil with Zeal but without Understanding
Collaboration with systems of evil-the overall topic of this Symposium-is a problem as fresh as contemporary news accounts. The New York Times recently carried a front-page story about the dilemmas described by young Serbs who were evading military conscription because they understood the evil of Slobodan Milosevic\u27s genocidal policies against the Kosovar Albanians but nonetheless felt a patriotic duty to protect their country against foreign assaults. As one young man put it, \u27\u27\u27we\u27d like to see [Milosevic] hanging.\u27 But ... \u27[i]f the guys from NATO come here, we will shoot them.\u27 ! As wrenching as this kind of dilemma may be, it is not the problem of collaboration that I want to discuss. My concern is with a more difficult problem, as I see it-a problem that is more insidious and difficult to identify as such. The young Serbian resister knows that his President is an evil man, and he feels the moral conflict between his revulsion at this evil and his patriotic impulses. My concern is for circumstances where the evil is not understood as such by its perpetrators, where they are unaware at the time they are acting of the wrongfulness of the actions in which they are engaged
Natural Supergravity Inflation
We show that a single uncharged chiral superfield, canonically coupled to
\mbox{} supergravity with vanishing superpotential, naturally drives
inflation in the early universe for a class of simple Kahler potentials.
Inflation occurs due to the one-loop generation of a Kahler anomaly
proportional to . The coefficient of this term is of the correct
magnitude to describe all aspects of an inflationary cosmology, including
sufficient amplitude perturbations and reheating. Higher order terms
proportional to for are naturally suppressed relative to the
term and, hence, do not destabilize the theory.Comment: 13 pages, CERN-TH.6685/92, UPR-0526
Comparisons of the execution times and memory requirements for high-speed discrete fourier transforms and fast fourier transforms, for the measurement of AC power harmonics
Conventional wisdom dictates that a Fast Fourier Transform (FFT) will be a more computationally effective method for measuring multiple harmonics than a Discrete Fourier Transform (DFT) approach. However, in this paper it is shown that carefully coded discrete transforms which distribute their computational load over many frames can be made to produce results in shorter execution times than the FFT approach, even for large number of harmonic measurement frequencies. This is because the execution time of the presented DFT actually rises with N and not the classical N2 value, while the execution time of the FFT rises with Nlog2N
Serving People with Disabilities through the Workforce Investment Act's One-Stop Career Centers
This paper examines the extent to which people with disabilities are served through WIA's One-Stop system and discusses its capacity to serve people with disabilities who desire employment assistance, both in terms of common barriers to access as well as promising strategies to improve service delivery to people with disabilities
The -parity Violating Decays of Charginos and Neutralinos in the B-L MSSM
The MSSM is the MSSM with three right-handed neutrino chiral multiplets
and gauged symmetry. The symmetry is broken by the third family
right-handed sneutrino acquiring a VEV, thus spontaneously breaking -parity.
Within a natural range of soft supersymmetry breaking parameters, it is shown
that a large and uncorrelated number of initial values satisfy all present
phenomenological constraints; including the correct masses for the ,
bosons, having all sparticles exceeding their present lower bounds and
giving the experimentally measured value for the Higgs boson. For this "valid"
set of initial values, there are a number of different LSPs, each occurring a
calculable number of times. We plot this statistically and determine that among
the most prevalent LSPs are chargino and neutralino mass eigenstates. In this
paper, the -parity violating decay channels of charginos and neutralinos to
standard model particles are determined, and the interaction vertices and decay
rates computed analytically. These results are valid for any chargino and
neutralino, regardless of whether or not they are the LSP. For chargino and
neutralino LSPs, we will-- in a subsequent series of papers --present a
numerical study of their RPV decays evaluated statistically over the range of
associated valid initial points.Comment: 62 pages, 12 figures, added references in section 1, corrected some
calculation error
Two Higgs Pair Heterotic Vacua and Flavor-Changing Neutral Currents
We present a vacuum of heterotic M-theory whose observable sector has the
MSSM spectrum with the addition of one extra pair of Higgs-Higgs conjugate
superfields. The quarks/leptons have a realistic mass hierarchy with a
naturally light first family. The double elliptic structure of the Calabi-Yau
compactification threefold leads to two ``stringy'' selection rules. These
classically disallow Yukawa couplings to the second Higgs pair and, hence,
Higgs mediated flavor-changing neutral currents. Such currents are induced in
higher-dimensional interactions, but are naturally suppressed. We show that our
results fit comfortably below the observed upper bounds on neutral
flavor-changing processes.Comment: 52 pages, 3 figures, 1 table, requires feynm
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