7,090 research outputs found
Recommended from our members
Amy's story: a research agenda for smoking cessation in pregnancy
The purpose of this paper is to report on a case from Nottinghamshire County Primary Care Trust (PCT) as an exploratory study examining the role of social marketingâs contribution to smoking cessation during pregnancy. Insights from the case will be used to inform and stimulate debate around future inquiry regarding the effectiveness of such campaigns, specifically with respect to smoking cessation in pregnancy, the role of low-budget highly-localised programmes and, in response to a recent Chartered Institute of Marketing (CIM) paper (Thorp, 2009), the extent to which social marketers lead the way in producing behavioural change in populations. Whilst well discussed in the health literature, smoking cessation during pregnancy remains under-researched in the marketing literature offering opportunities for research and practice. Also, this study is of contemporary interest in light of the proposed public sector cuts which will restrict social marketing budgets, the move of Public Health to local authority control placing it as central to the Governmentâs public health plans, and the Governmentâs reported interest in behavioural change techniques such as nudge theory (Stamp, 2010). The paper is structured by presenting the case using The National Social Marketing Centreâs (NSMC, 2010) benchmark criteria for effective social marketing, whilst identifying findings and themes from the literature
Sonoluminescence as Quantum Vaccum Radiation
We argue that the available experimental data is not compatible with models
of sonoluminescence which invoke dynamical properties of the interface without
regard to the compositional properties of the trapped gas inside the bubble.Comment: 2 pages,Revtex,No figures,Submitted to PRL(comments
Sonoluminescence: Nature's Smallest BlackBody
The Spectrum of the light emitted by a sonoluminescing bubble is extremely
well fit by the spectrum of a blackbody. Furthermore the radius of emission can
be smaller than the wavelength of the light. Consequences, for theories of
sonoluminescence are discussed.Comment: 8 pages, 3 Figure
Simulation of Dimensionally Reduced SYM-Chern-Simons Theory
A supersymmetric formulation of a three-dimensional SYM-Chern-Simons theory
using light-cone quantization is presented, and the supercharges are calculated
in light-cone gauge. The theory is dimensionally reduced by requiring all
fields to be independent of the transverse dimension. The result is a
non-trivial two-dimensional supersymmetric theory with an adjoint scalar and an
adjoint fermion. We perform a numerical simulation of this SYM-Chern-Simons
theory in 1+1 dimensions using SDLCQ (Supersymmetric Discrete Light-Cone
Quantization). We find that the character of the bound states of this theory is
very different from previously considered two-dimensional supersymmetric gauge
theories. The low-energy bound states of this theory are very ``QCD-like.'' The
wave functions of some of the low mass states have a striking valence
structure. We present the valence and sea parton structure functions of these
states. In addition, we identify BPS-like states which are almost independent
of the coupling. Their masses are proportional to their parton number in the
large-coupling limit.Comment: 18pp. 7 figures, uses REVTe
Debye relaxation and 250 K anomaly in glass forming monohydroxy alcohols
A previous dielectric, near-infrared (NIR), and nuclear magnetic resonance
study on the hydrogen-bonded liquid 2-ethyl-1-hexanol [C. Gainaru et al., Phys.
Rev. Lett. 107, 118304 (2011)] revealed anomalous behavior in various static
quantities near 250 K. To check whether corresponding observations can be made
for other monohydroxy alcohols as well, these experimental methods were applied
to such substances with 5, 6, 7, 8, and 10 carbon atoms in their molecular
backbone. All studied liquids exhibit a change of behavior near 250 K which is
tentatively ascribed to effects of hydrogen bond cooperativity. By analyzing
the NIR band intensities, a linear cluster size is derived that agrees with
estimates from dielectric spectroscopy. All studied alcohols, except
4-methyl-3-heptanol, display a dominant Debye-like peak. Furthermore, neat
2-ethyl-1-butanol exhibits a well resolved structural relaxation in its
dielectric loss spectrum which so far has only been observed for diluted
monohydroxy alcohols.Comment: 39 pages including 12 figure
Flavor Changing Processes in Supersymmetric Models with Hybrid Gauge- and Gravity-Mediation
We consider supersymmetric models where gauge mediation provides the dominant
contributions to the soft supersymmetry breaking terms while gravity mediation
provides sub-dominant yet non-negligible contributions. We further assume that
the gravity-mediated contributions are subject to selection rules that follow
from a Froggatt-Nielsen symmetry. This class of models constitutes an example
of viable and natural non-minimally flavor violating models. The constraints
from mixing in the neutral K system imply that the modifications to the
Standard Model predictions for mixing in the neutral B_d and B_s systems are
generically at most at the percent level, but can be of order ten percent for
large . The modifications for the neutral D system mixing are
generically at most of order a few percent, but in a special subclass of models
they can be of order one. We point out processes relevant for
flavor violation in hybrid mediation.Comment: 30 pages, 3 figure
Improved results for N=(2,2) super Yang-Mills theory using supersymmetric discrete light-cone quantization
We consider the (1+1)-dimensional super Yang--Mills theory
which is obtained by dimensionally reducing super Yang--Mills
theory in four dimension to two dimensions. We do our calculations in the
large- approximation using Supersymmetric Discrete Light Cone
Quantization. The objective is to calculate quantities that might be
investigated by researchers using other numerical methods. We present a
precision study of the low-mass spectrum and the stress-energy correlator
. We find that the mass gap of this theory closes as the
numerical resolution goes to infinity and that the correlator in the
intermediate region behaves like .Comment: 18 pages, 8 figure
Properties of the Bound States of Super-Yang-Mills-Chern-Simons Theory
We apply supersymmetric discrete light-cone quantization (SDLCQ) to the study
of supersymmetric Yang-Mills-Chern-Simons (SYM-CS) theory on R x S^1 x S^1. One
of the compact directions is chosen to be light-like and the other to be
space-like. Since the SDLCQ regularization explicitly preserves supersymmetry,
this theory is totally finite, and thus we can solve for bound-state wave
functions and masses numerically without renormalizing. The Chern-Simons term
is introduced here to provide masses for the particles while remaining totally
within a supersymmetric context. We examine the free, weak and strong-coupling
spectrum. The transverse direction is discussed as a model for universal extra
dimensions in the gauge sector. The wave functions are used to calculate the
structure functions of the lowest mass states. We discuss the properties of
Kaluza-Klein states and focus on how they appear at strong coupling. We also
discuss a set of anomalously light states which are reflections of the exact
Bogomol'nyi-Prasad-Sommerfield states of the underlying SYM theory.Comment: 20pp., 21 figure
- âŠ