6,005 research outputs found

    Cruise Crimes: Economic-Legal Issues and Current Debates

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    Cruise tourism is one of the sunshine sectors of international tourism and is growing rapidly in many parts of the world. It is estimated that the growth rate of cruise tourism is twice the rate of tourism overall. Notwithstanding all the positives that accompany this growth, many critics have drawn attention to the “dark side” of cruise crimes. The eco-system aboard the cruise ship offers a fertile ground for the occurrence of crimes. The present paper examines the issue of crimes onboard from multiple standpoints and suggests some remedial measures that would lead to better management of cruise crimes. A presentation of the recent initiatives by the U.S. legislative bodies aimed at containing cruise crimes is also provided.cruise ships; criminology aboard; cruise crime typology; crime prevention; industry initiative; legislative intervention; and USA

    Supersymmetry, local horizontal unification, and a solution to the flavor puzzle

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    Supersymmetric gauge models with local horizontal symmetries are known to generate large flavor changing neutral current effects induced by supersymmetry breaking D-terms. We show how the presence of a U(1) gauge symmetry solves this problem. We then construct a realistic gauge model with SU(2)_H x U(1)_H as the local horizontal symmetry and suggest that the U(1)_H factor may be identified with the anomalous U(1) induced by string compactification. This model explains the observed hierarchies among the quark masses and mixing angles, accommodates naturally the solar and atmospheric neutrino data, and provides simultaneously a solution to the supersymmetric flavor problem. The model can be excluded if the rare decay \mu --> e \gamma is not observed in the current round of experiments.Comment: 10 pages in RevTe

    Blade for turbine engine

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    A blade for a turbine engine having a centerline. The blade comprises: a root section extending at an angle relative to the centerline; and an airfoil section extending from the root section. The root section is directly adjacent said airfoil section. In other words, the blade is neckless. The blade is part of a rotor assembly, and is preferably a fan blade

    Partial Derivation of Transformation Properties of Quarks and Leptons

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    Under the assumptions that SU(3)c×U(1)Y×GSU(3)_c\times U(1)_Y \times G^{\prime} with GG^{\prime} simple is a local symmetry group at high energies, that color is parity-conserving, and the Y-charges are irreducible, we show that anomaly constraints imply the minimal set of fermions is fifteen in number. Given this minimal set, we further show that GG^{\prime} must be SU(2)SU(2) and the unbroken gauge symmetry is {\it either} color {\it or} the product of color with electric charge.Comment: 9 pages, UMDHEP 94-72 and IFP-487-UN

    4-[(E)-(4-Methyl­phen­yl)imino­meth­yl]phenol

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    In the title compound, C14H13NO, the two rings show significant deviation from coplanarity, with a dihedral angle between the two planes of 49.40 (5)°. The hy­droxy group is involved in an inter­molecular O—H⋯N hydrogen bond, forming an extended one-dimensional zigzag chain along (001)

    4-Bromo-N-(4-hy­droxy­benzyl­idene)­aniline

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    In the title compound, C13H10BrNO, the benzene ring planes are inclined at an angle of 48.85 (17)°, resulting in a nonplanar mol­ecule. A characteristic of aromatic Schiff bases with N-aryl substituents is that the terminal phenyl rings are twisted relative to the HC=N plane. In this case, the HC=N unit makes dihedral angles of 11.1 (4) and 38.5 (3)° with the hy­droxy­benzene and bromo­benzene rings, respectively. In the crystal, the molecules are linked by O—H⋯N hydrogen bonds to form infinite (C8) chains along the b axis

    New vector-scalar contributions to neutrinoless double beta decay and constraints on R-parity violation

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    We show that in minimal supersymmetric standard model (MSSM) with R-parity breaking as well as in the left-right symmetric model, there are new observable contributions to neutrinoless double beta decay arising from hitherto overlooked diagrams involving the exchange of one W boson and one scalar boson. In particular, in the case of MSSM, the present experimental bounds on neutrinoless double beta decay lifetime improves the limits on certain R-parity violating couplings by about two orders of magnitude. It is shown that similar diagrams also lead to enhanced rates for μe+\mu^-\rightarrow e^+ conversion in nuclei, which are in the range accessible to ongoing experiments.Comment: Latex file; 9 pages; 3 figures available on reques
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