49,386 research outputs found

    Sustainable touring: exploring value creation through social marketing

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    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

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    Measurements of the ratio of the elastic form factors of the proton (μpGE/GM\mu_pG_E/G_M) 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 Q2Q^2, while polarization transfer experiments suggest that the ratio decreases as a function of Q2Q^2. The most widely-accepted hypothesis to explain this discrepancy is that hard two-photon exchange (TPE) significantly contributes to the elastic epep 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 fb1^{-1} of exclusive epe^- p and e+pe^+ p elastic scattering data at DESY in 2012, and has determined the elastic σe+p/σep\sigma_{e^+p}/\sigma_{e^-p} ratio to unprecedented precision up to Q22.2Q^2\approx2.2 (GeV/cc)2^2, ϵ0.4\epsilon\approx0.4. 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

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    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

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    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

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    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

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    We obtain a bilocal classical field theory as the large NN 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 NN limit of the spectrum of the chiral Gross--Neveu model.Comment: Tex, 18 pages, no figure

    Renormalized Contact Potential in Two Dimensions

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    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

    Conversion Efficiencies of Heteronuclear Feshbach Molecules

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    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

    On the contact values of the density profiles in an electric double layer using density functional theory

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    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
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