47 research outputs found

    Shell model description of normal parity bands in odd-mass heavy deformed nuclei

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    The low-energy spectra and B(E2) electromagnetic transition strengths of 159Eu, 159Tb and 159Dy are described using the pseudo SU(3) model. Normal parity bands are built as linear combinations of SU(3) states, which are the direct product of SU(3) proton and neutron states with pseudo spin zero (for even number of nucleons) and pseudo spin 1/2 (for odd number of nucleons). Each of the many-particle states have a well-defined particle number and total angular momentum. The Hamiltonian includes spherical Nilsson single-particle energies, the quadrupole-quadrupole and pairing interactions, as well as three rotor terms which are diagonal in the SU(3) basis. The pseudo SU(3) model is shown to be a powerful tool to describe odd-mass heavy deformed nuclei.Comment: 11 pages, 2 figures, Accepted to be published in Phys. Rev.

    Everything old is new again: Quoted Domain Specific Languages

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    We describe a new approach to domain specific languages (DSLs), called Quoted DSLs (QDSLs), that resurrects two old ideas: quotation, from McCarthy's Lisp of 1960, and the subformula property, from Gentzen's natural deduction of 1935. Quoted terms allow the DSL to share the syntax and type system of the host language. Normalising quoted terms ensures the subformula property, which guarantees that one can use higher-order types in the source while guaranteeing first-order types in the target, and enables using types to guide fusion. We test our ideas by re-implementing Feldspar, which was originally implemented as an Embedded DSL (EDSL), as a QDSL; and we compare the QDSL and EDSL variants

    Consumers\u27 Perceptions Of Fairness And The Resultant Effect On Customer Satisfaction

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    This study investigated the effects of interactional, distributive, and procedural fairness on overall fairness and customer satisfaction and of overall fairness on customer satisfaction across a broad spectrum of service encounter outcomes within the service sector, not just in the context of a service failure. Nearly 50% of those encounters recalled represented hospitality and leisure businesses exclusively. The model tested here has been adapted from a larger theoretical model of the customer\u27s path to loyalty which is an adaptation of previous models of the service profit chain, customer satisfaction with service failure and recovery, and complaint handling relationships. This research provides practical information that can lead to a better understanding of customers\u27 evaluation methods and be used to guide the formation of improved service strategies that provide fairness, a key to satisfaction in hospitality, leisure and service sector affiliated businesses. © 2006 by The Haworth Press, Inc. All rights reserved

    Hazard management in structural integrity Vol 5, performance standards

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    SIGLEAvailable from British Library Document Supply Centre-DSC:6244.385(98-152) / BLDSC - British Library Document Supply CentreGBUnited Kingdo

    JavaScript as an Embedded DSL

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    Abstract. Developing rich web applications requires mastering different environments on the client and server sides. While there is considerable choice on the server-side, the client-side is tied to JavaScript, which poses substantial software engineering challenges, such as moving or sharing pieces of code between the environments. We embed JavaScript as a DSL in Scala, using Lightweight Modular Staging. DSL code can be compiled to JavaScript or executed as part of the server application. We use features of the host language to make client-side programming safer and more convenient. We use gradual typing to interface typed DSL programs with existing JavaScript APIs. We exploit a selective CPS transform already available in the host language to provide a compelling abstraction over asynchronous callback-driven programming in our DSL
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