50,560 research outputs found
Sustainable touring: exploring value creation through social marketing
Purpose – The purpose of this paper is to examine the social marketing-based approach to live performance adopted by Jack Johnson and its potential as the basis of a developmental model for sustainable touring. Design/methodology/approach – Musician Jack Johnson has been recognised as a leader in his approach to sustainable touring. The research approach uses stakeholder interviews to examine his “Sleep Through the Static” tour from a phenomenological perspective. Findings – The activities adopted during the global tour provide “upstream” contributions to social change agendas as well as “downstream” contributions to change behaviour. “Downstream” contribution leans towards closed behaviour settings for the corporate community and open behaviour settings for the social community. Limitations are the extent of resources required; better understanding of audience targets and their perceived value of behaviour change. Research limitations/implications – The use of a single example means that consideration of the success of this model is limited to one approach when others might offer other options. However, the phenomenological approach is sufficient to begin to understand the value creation process at work here. Practical implications – A range of performers in different cultural areas might consider the potential of this approach as a means to contribute to sustainable touring goals. Originality/value – Much of the literature available for event managers focuses on environmental concerns to the neglect of other dimensions of sustainability. This work highlights how the social marketing of sustainable development offers a wider scope to touring performers
Results from the OLYMPUS Experiment on the Contribution of Hard Two-Photon Exchange to Elastic Electron-Proton Scattering
Measurements of the ratio of the elastic form factors of the proton
() exhibit a strong discrepancy. Experiments using unpolarized
beams and Rosenbluth separation to determine the form factors have found values
of the ratio approximately consistent with unity over a wide range of ,
while polarization transfer experiments suggest that the ratio decreases as a
function of . The most widely-accepted hypothesis to explain this
discrepancy is that hard two-photon exchange (TPE) significantly contributes to
the elastic cross section. Hard TPE has been neglected in previous
analyses of electron-proton scattering scattering experiments, in part due to
the fact that there exists no model independent way to calculate the
contribution. The effect of hard TPE may be measured experimentally, however,
via precise determination of the ratio of the electron-proton and
positron-proton elastic cross sections. The OLYMPUS experiment collected more
than 3 fb of exclusive and elastic scattering data at
DESY in 2012, and has determined the elastic
ratio to unprecedented precision up to (GeV/),
. This presentation will discuss the OLYMPUS experiment and
analysis, and present the recently published results from OLYMPUS in the
context of the results from the other two TPE experiments.Comment: 8 pages, 5 figures, contribution to the proceedings of the XVII
International Conference on Hadron Spectroscopy and Structure (2017
Application of the SRISM approach to the study of the capacitance of the double layer of a high density primitive model electrolyte
In this study the Singlet Reference Interaction Site Model (SRISM) is
employed to the study of the electrode charge dependence of the capacitance of
a planar electric double layer using the primitive model of the double layer
for a high density electrolyte that mimics an ionic liquid. The ions are
represented by charged hard spheres and the electrode is a uniformly charged
flat surface. The capacitance of this model fluid is calculated with the SRISM
approach with closures based on the hypernetted chain (HNC) and
Kovalenko-Hirata (KH) closures and compared with simulations. As long as the
magnitude of the electrode charge is not too great, the HNC closure shows the
most promise. The KH results are reasonably good for a high density electrolyte
but are poor when applied at low densities.Comment: 6 pages, 2 figure
Scholarly journal access in academic libraries:issues for future development
As academia progresses towards the 21st century, increases in student numbers, distance learning, changes in copyright licensing and lack of funding means that academic institutions have to look more closely at the use of electronic resources in order to meet these challenges. The "wired campus" and "virtual university" mean more users looking for electronic resources and increased pressure on libraries to provide these services. The development of electronic journals in the early 1990s and the onset of electronic publishing appeared to be a solution to the problem. Journals could be stored electronically thereby saving space, the risk of lose, theft or damage is lessened and costs where significantly reduced. Electronic journals have become an increasingly important part of academic library collections, however they have not proved to be the panacea the profession hoped for. Electronic journal useage has created a new set of issues such as archiving, copyright, cataloguing, site licensing, remote access, hardware requirements and journal design. There are many stakeholders involved in the selection of electronic journals within academic libraries from librarians, to users and publishers. This paper attempts to raise awareness of some of the issues which will have to be considered if scholarly electronic journal publishing is to develop over the next decade. The content and ideas presented in the paper are derived from research undertaken in the area for a student Masters dissertation
Renormalized Path Integral in Quantum Mechanics
We obtain direct, finite, descriptions of a renormalized quantum mechanical
system with no reference to ultraviolet cutoffs and running coupling constants,
in both the Hamiltonian and path integral pictures. The path integral
description requires a modification to the Wiener measure on continuous paths
that describes an unusual diffusion process wherein colliding particles
occasionally stick together for a random interval of time before going their
separate ways.Comment: 13 pgs, plain TEX fil
Solitons in a Bilocal Field Theory
We obtain a bilocal classical field theory as the large limit of the
chiral Gross--Neveu (or non--abelian Thirring) model. Exact classical solutions
that describe topological solitons are obtained. It is shown that their mass
spectrum agrees with the large limit of the spectrum of the chiral
Gross--Neveu model.Comment: Tex, 18 pages, no figure
Renormalized Contact Potential in Two Dimensions
We obtain for the attractive Dirac delta-function potential in
two-dimensional quantum mechanics a renormalized formulation that avoids
reference to a cutoff and running coupling constant. Dimensional transmutation
is carried out before attempting to solve the system, and leads to an
interesting eigenvalue problem in N-2 degrees of freedom (in the center of
momentum frame) when there are N particles. The effective Hamiltonian for N-2
particles has a nonlocal attractive interaction, and the Schrodinger equation
becomes an eigenvalue problem for the logarithm of this Hamiltonian. The 3-body
case is examined in detail, and in this case a variational estimate of the
ground-state energy is given.Comment: Plain Te
On the contact values of the density profiles in an electric double layer using density functional theory
A recently proposed local second contact value theorem [Henderson D., Boda
D., J. Electroanal. Chem., 2005, 582, 16] for the charge profile of an electric
double layer is used in conjunction with the existing Monte Carlo data from the
literature to assess the contact behavior of the electrode-ion distributions
predicted by the density functional theory. The results for the contact values
of the co- and counterion distributions and their product are obtained for the
symmetric valency, restricted primitive model planar double layer for a range
of electrolyte concentrations and temperatures. Overall, the theoretical
results satisfy the second contact value theorem reasonably well, the agreement
with the simulations being semi-quantitative or better. The product of the co-
and counterion contact values as a function of the electrode surface charge
density is qualitative with the simulations with increasing deviations at
higher concentrations.Comment: 10 pages, 8 figure
Conversion Efficiencies of Heteronuclear Feshbach Molecules
We study the conversion efficiency of heteronuclear Feshbach molecules in
population imbalanced atomic gases formed by ramping the magnetic field
adiabatically. We extend the recent work [J. E. Williams et al., New J. Phys.,
8, 150 (2006)] on the theory of Feshbach molecule formations to various
combinations of quantum statistics of each atomic component. A simple
calculation for a harmonically trapped ideal gas is in good agreement with the
recent experiment [S. B. Papp and C. E. Wieman, Phys. Rev. Lett., 97, 180404
(2006)] without any fitting parameters. We also give the conversion efficiency
as an explicit function of initial peak phase space density of the majority
species for population imbalanced gases. In the low-density region where
Bose-Einstein condensation does not appear, the conversion efficiency is a
monotonic function of the initial peak phase space density, but independent of
statistics of a minority component. The quantum statistics of majority atoms
has a significant effect on the conversion efficiency. In addition,
Bose-Einstein condensation of an atomic component is the key element
determining the maximum conversion efficiency.Comment: 46 pages, 32 figure
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