9,055 research outputs found

    Pirate or subscriber? An exploratory study on italian consumers' music habits

    Get PDF
    Purpose of the paper: This paper analyzes Italian consumers’ music habits in terms of online piracy behaviors and their interest toward subscription-based music services (SBMS), i.e. services that for a small monthly fee give users legal access to vast music libraries across multiple devices. The objective is to try and profile a piracy-prone consumer and explore if SBMS could be a viable alternative to online music piracy in Italy, where the general piracy rate is very high. Methodology: The study is based on an empirical quantitative analysis through the collection of 505 questionnaires completed by Italian consumers. Findings: The paper highlights how Italian consumers reflect the ‘attitude-behavior gap’ in music consumption, as they perceive online music piracy as ethically wrong, yet they still show low preference for the legal, reasonably priced choice (such as SBMS). Younger, male, lower education, students have the highest propensity towards online piracy. In addition, consumers’ awareness, familiarity and interest in subscriptionbased music services are still very low. Research limitations: The limitations of the paper are linked mainly to the adapted scales, to the omission of alternative determinants of attitude towards piracy, to the composition of the sample and for analyzing only two subscription-based music services (Napster and Spotify). Managerial implications: The results call for greater efforts by music industry actors and public institutions to educate Italian consumers about the consequences of their online piracy behavior and the possible solutions offered by SBMS. Originality of the paper: This paper is the first to focus on Italian consumers’ music habits, their attitude and behavior towards online piracy and their interest toward subscription-based music services as a viable alternative

    The two-nucleon electromagnetic charge operator in chiral effective field theory (χ\chiEFT) up to one loop

    Full text link
    The electromagnetic charge operator in a two-nucleon system is derived in chiral effective field theory (χ\chiEFT) up to order e Qe\, Q (or N4LO), where QQ denotes the low-momentum scale and ee is the electric charge. The specific form of the N3LO and N4LO corrections from, respectively, one-pion-exchange and two-pion-exchange depends on the off-the-energy-shell prescriptions adopted for the non-static terms in the corresponding potentials. We show that different prescriptions lead to unitarily equivalent potentials and accompanying charge operators. Thus, provided a consistent set is adopted, predictions for physical observables will remain unaffected by the non-uniqueness associated with these off-the-energy-shell effects.Comment: 16 pages, 10 figure

    Electromagnetic Structure and Reactions of Few-Nucleon Systems in χ\chiEFT

    Full text link
    We summarize our recent work dealing with the construction of the nucleon-nucleon potential and associated electromagnetic currents up to one loop in chiral effective field theory (χ\chiEFT). The magnetic dipole operators derived from these currents are then used in hybrid calculations of static properties and low-energy radiative capture processes in few-body nuclei. A preliminary set of results are presented for the magnetic moments of the deuteron and trinucleons and thermal neutron captures on pp, dd, and 3^3He.Comment: Invited talk to the 19th International IUPAP Conference on Few-Body Problems in Physic

    Nuclear response for the Skyrme effective interaction with zero-range tensor terms. II. Sum rules and instabilities

    Full text link
    The formalism of linear response theory for Skyrme forces including tensor terms presented in article [1] is generalized for the case of a Skyrme energy density functional in infinite matter. We also present analytical results for the odd-power sum rules, with particular attention to the inverse energy weighted sum rule, M−1M_{-1}, as a tool to detect instabilities in Skyrme functionals.Comment: Submitted to Phys. Rev.

    Thermal neutron captures on dd and 3^3He

    Full text link
    We report on a study of the ndnd and n\,^3He radiative captures at thermal neutron energies, using wave functions obtained from either chiral or conventional two- and three-nucleon realistic potentials with the hyperspherical harmonics method, and electromagnetic currents derived in chiral effective field theory up to one loop. The predicted ndnd and n\,^3He cross sections are in good agreement with data, but exhibit a significant dependence on the input Hamiltonian. A comparison is also made between these and new results for the ndnd and n\,^3He cross sections obtained in the conventional framework for both potentials and currents.Comment: 4 pages, 4 eps figures; references added; corrections to text and abstract as suggested by referee adde

    Electromagnetic structure of A=2 and 3 nuclei in chiral effective field theory

    Get PDF
    The objectives of the present work are twofold. The first is to address and resolve some of the differences present in independent, chiral-effective-field-theory (\chiEFT) derivations up to one loop, recently appeared in the literature, of the nuclear charge and current operators. The second objective is to provide a complete set of \chiEFT predictions for the structure functions and tensor polarization of the deuteron, for the charge and magnetic form factors of 3He and 3H, and for the charge and magnetic radii of these few-nucleon systems. The calculations use wave functions derived from high-order chiral two- and three-nucleon potentials and Monte Carlo methods to evaluate the relevant matrix elements. Predictions based on conventional potentials in combination with \chiEFT charge and current operators are also presented. There is excellent agreement between theory and experiment for all these observables for momentum transfers up to q< 2.0-2.5 (1/fm); for a subset of them, this agreement extends to momentum transfers as high as q~5-6 (1/fm). A complete analysis of the results is provided.Comment: 34 pages, Revte

    Electromagnetic processes in a χ\chiEFT framework

    Full text link
    Recently, we have derived a two--nucleon potential and consistent nuclear electromagnetic currents in chiral effective field theory with pions and nucleons as explicit degrees of freedom. The calculation of the currents has been carried out to include N3^3LO corrections, consisting of two--pion exchange and contact contributions. The latter involve unknown low-energy constants (LECs), some of which have been fixed by fitting the npnp S- and P-wave phase shifts up to 100 MeV lab energies. The remaining LECs entering the current operator are determined so as to reproduce the experimental deuteron and trinucleon magnetic moments, as well as the npnp cross section. This electromagnetic current operator is utilized to study the ndnd and n3n^3He radiative captures at thermal neutron energies. Here we discuss our results stressing on the important role played by the LECs in reproducing the experimental data.Comment: Invited talk at the 5th International Conference on Quarks and Nuclear Physics, to appear in Chinese Physics

    The Usefulness of Sharing Social Impact Data. Early Findings from an International Benchmarking on SROI Assessments

    Get PDF
    This paper aims at investigating a perspective for the social impact measurability by collecting and analysing open data at the international level. Our goal is to shed light on the unlocked potential of the knowledge produced by a global community of scholars and practitioners engaged in social impact measurement processes. Global open data on social impact assessment (SIA) have been mapped and collected in a database using the impact chain as a reference point for choosing the variables. In this paper, we focus on the potential use of these data to enable forecasting analysis about the expected social value and to inform decision-making processes aimed at responding to complex social challenges. The early findings suggest the opportunity of a wider action research initiative, by engaging different typologies of stakeholders and organizations aimed at incorporating social impact as a key strategic driver

    An Analysis of the Attitudes of Technology Education Students Enrolled in the Military Career Transition Program at Darden College of Education, Old Dominion University

    Get PDF
    Through the analysis of the reasons given by students for enrolling in Old Dominion University\u27s MCTP and Technology Education programs, the following goals will be answered: 1. Determine the reasons why students selected the Military Career Transition Program; 2. Determine the reasons why students enrolled in the Technology Education programs; 3. Assess the motivational and attitudinal factors contributing to their enrollment and completion of the Military Career Transition Program, Technology Education program

    From sweetwater to seawater: An environmental history of Narragansett Bay, 1636--1849

    Get PDF
    This dissertation examines environmental change on and around Narragansett Bay from first European settlement in 1636 to the dissolution of the Blackstone Canal Company in 1849. It uses one of the largest estuaries on the East Coast and one situated at the heart of early English settlement in New England as a means to write estuaries into Atlantic history. Examining the ecological and epistemological complexities that arose at the nexus of land and sea, where improvable space and the push of progress met an eternal or profound ocean, this study reframes estuaries as watery borderlands that people used but never fully subdued. In this sense, this work challenges an older historiographical tradition of progress, while it advances environmental historiography by examining not terrestrial or oceanic environments but the soggy spaces in between. A closer look at the boundary between land and sea, this study shows, provides new insights into the ways Early Modern people envisioned the boundary between humans and nature. By rewriting the history of an estuary from the ground up, so to speak, this work explores the ways people shaped a watery world and how it shaped them in return. It argues that at the confluence of sweetwater and seawater, in the mixing, muddy margins of an estuary, there developed a whole host of political, legal, and cultural ambiguities that shaped patterns of settlement, trade, resource use, and ultimately the Bay itself But much more than the passive recipient of human action, the Bay became a cultural manifestation of the people who lived along its shores, and in consequence it was shaped and reshaped to meet the changing demands of human desire
    • …
    corecore