1,163 research outputs found
Alien Registration- Toner, Earl B. (Bingham, Somerset County)
https://digitalmaine.com/alien_docs/8591/thumbnail.jp
Monogamy of Bell correlations and Tsirelson's bound
We consider three parties, A, B, and C, each performing one of two local measurements on a shared quantum state of arbitrary dimension. We characterize the trade-off between the nonlocality of the Bell correlations observed by AB and of those observed by AC. This generalizes Tsirelson's bound on the quantum value of the CHSH inequality, the latter being recovered when C is completely uncorrelated with AB. We also discuss the trade-off between Bell violations and local expectation values of observables that anticommute with the ones used in the Bell test
Clash of symmetries on the brane
If our 3+1-dimensional universe is a brane or domain wall embedded in a
higher dimensional space, then a phenomenon we term the ``clash of symmetries''
provides a new method of breaking some continuous symmetries. A global
symmetry is spontaneously broken
to , where the continuous subgroup
can be embedded in several different ways in the parent group
, and . A certain
class of topological domain wall solutions connect two vacua that are invariant
under {\it differently embedded} subgroups. There is then
enhanced symmetry breakdown to the intersection of these two subgroups on the
domain wall. This is the ``clash''. In the brane limit, we obtain a
configuration with symmetries in the bulk but the smaller
intersection symmetry on the brane itself. We illustrate this idea using a
permutation symmetric three-Higgs-triplet toy model exploiting the distinct
, and spin U(2) subgroups of U(3). The three disconnected portions
of the vacuum manifold can be treated symmetrically through the construction of
a three-fold planar domain wall junction configuration, with our universe at
the nexus. A possible connection with is discussed.Comment: 30 pages, 9 embedded figure
U.S. CONSUMER ATTITUDES TOWARD FOOD BIOTECHNOLOGY
This study examines consumer attitudes in the U.S. toward genetically modified food over time. Five surveys conducted by the International Food Information Council (1999 - 2001) are used to determine what factors significantly influence consumers' willingness to try food products genetically modified to reduce pesticide usage or improve taste.Consumer/Household Economics,
Ginzburg-Landau theory for the conical cycloid state in multiferroics: applications to CoCrO
We show that the cycloidal magnetic order of a multiferroic can arise in the
absence of spin and lattice anisotropies, for e.g., in a cubic material, and
this explains the occurrence of such a state in CoCrO. We discuss the
case when this order coexists with ferromagnetism in a so called `conical
cycloid' state, and show that a direct transition to this state from the
ferromagnet is necessarily first order. On quite general grounds, the reversal
of the direction of the uniform magnetization in this state can lead to the
reversal of the electric polarization as well, without the need to invoke
`toroidal moment' as the order parameter.Comment: 6 pages, 3 figures, accepted for publication in Phys. Rev.
Dynamic coordinated control laws in multiple agent models
We present an active control scheme of a kinetic model of swarming. It has
been shown previously that the global control scheme for the model, presented
in \cite{JK04}, gives rise to spontaneous collective organization of agents
into a unified coherent swarm, via a long-range attractive and short-range
repulsive potential. We extend these results by presenting control laws whereby
a single swarm is broken into independently functioning subswarm clusters. The
transition between one coordinated swarm and multiple clustered subswarms is
managed simply with a homotopy parameter. Additionally, we present as an
alternate formulation, a local control law for the same model, which implements
dynamic barrier avoidance behavior, and in which swarm coherence emerges
spontaneously.Comment: 20 pages, 6 figure
Sub-Micron CMOS Characterisation for Single Chip Wireless Applications
This paper describes a multifunctional, electronically reconfigurable, small/large signal load pull measurement system and its integrated use with BSIM 3v3 for modelling of sub-micron CMOS transistors and sub-circuits. This turnkey measurement system can be electronically configured from a battery of instruments in order to characterise minimum noise, optimum power, intermodulation, dc and S-parameters, together with harmonic response and dynamic load line information under both source and load pull conditions. The instrumentation provides validation data against the BSIM physical model simulator. Hence, for the first time measurement of all of the significant devices parameters can be made for the device operated under all possible primary modes for model validation so that optimal circuit design can be carried out in a holistic fashion
Revisiting public transport service delivery: exploring rail commuters’ attitudes towards fare collection and verification systems
Making Public Transport services more attractive and effective requires attractive and effective ticketing. This requires a clear understanding of user attitudes, needs and expectations. This study explored commuters’ attitudes to fare collection and verification and the underlying factors, their acceptance of the policy of “No-ticket-purchase on-board” and their preferences for fare verification options. Commuters rated their agreement with 17 ticketing related statements in a cross-sectional questionnaire survey conducted along the corridor with the largest proportion of cross-county commuting in Sweden, Stockholm – Uppsala. Four sets of hypotheses were then tested. The average scores were normally distributed and hence analysed using a two-way ANOVA. A One-way chi-square test was conducted to determine the commuters’ preference for fare verification approach. A t-test was used to analyse the perceived quality of ticketing and the commuters’ reaction to the policy of “No-ticket-purchase on-board PT vehicle”. Whilst the results showed that the commuters were relatively uniform in their attitudes, income, commuting route, ticket type and ticket purchase channel affected their attitudes. They were neutral to the policy of “No-ticket-purchase on-board”. Their attitude to fare collection was more positive than that of fare verification and they showed a preference for automatic fare verification. The study highlights a number of policy implications and recommends further research on the feasibility of passive fare verification and on commuters’ preferred options for fare verification
A Discotic Disguised as a Smectic: A Hybrid Columnar Bragg Glass
We show that discotics, lying deep in the columnar phase, can exhibit an
x-ray scattering pattern which mimics that of a somewhat unusual smectic liquid
crystal. This exotic, new glassy phase of columnar liquid crystals, which we
call a ``hybrid columnar Bragg glass'', can be achieved by confining a columnar
liquid crystal in an anisotropic random environment of e.g., strained aerogel.
Long-ranged orientational order in this phase makes {\em single domain} x-ray
scattering possible, from which a wealth of information could be extracted. We
give detailed quantitative predictions for the scattering pattern in addition
to exponents characterizing anomalous elasticity of the system.Comment: 4 RevTeX pgs, 2 eps figures. To appear in PR
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