343 research outputs found

    Cohesion Policy for rural areas after 2013. A rationale derived from the EDORA project (European Development Opportunities in Rural Areas) – ESPON 2013 Project 2013/1/2

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    The starting point of the EDORA project was the recognition that, rather than becoming more uniform in character, rural Europe is, in many ways, becoming increasingly diverse, implying new challenges and opportunities. The project’s overarching aim was to examine the process of differentiation, in order to better understand how EU policy can enable rural areas to build upon their specific potentials to achieve ‘smart, sustainable and inclusive growth’. The first phase of the project consisted of a literature review in order to establish a conceptual framework for subsequent empirical analysis. This identified a very wide range of aspects of contemporary rural change. In order to manage this complexity, and so that it could be communicated simply and clearly, three ‘meta-narratives’ of rural change were devised. In the second phase the evidence base for rural change was explored, both in terms of large scale patterns, based upon regional data, and local processes. The macro-scale patterns were addressed by three typologies. These were complemented at a micro-level by in-depth studies of 12 exemplar regions, reflecting a wide range of types and contexts. The third phase explored policy implications. The project’s findings point towards neo-endogenous approaches, in which a ‘bottom up’ process of regional programme design is fully supported and guided by available information, expert advice and the kind of strategic perspective which is best assembled at a central level. The EDORA findings are thus generally supportive of the ‘place based’ approaches advocated by the Barca Report

    First observation of two hyperfine transitions in antiprotonic He-3

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    We report on the first experimental results for microwave spectroscopy of the hyperfine structure of antiprotonic He-3. Due to the helium nuclear spin, antiprotonic He-3 has a more complex hyperfine structure than antiprotonic He-4 which has already been studied before. Thus a comparison between theoretical calculations and the experimental results will provide a more stringent test of the three-body quantum electrodynamics (QED) theory. Two out of four super-super-hyperfine (SSHF) transition lines of the (n,L)=(36,34) state were observed. The measured frequencies of the individual transitions are 11.12559(14) GHz and 11.15839(18) GHz, less than 1 MHz higher than the current theoretical values, but still within their estimated errors. Although the experimental uncertainty for the difference of these frequencies is still very large as compared to that of theory, its measured value agrees with theoretical calculations. This difference is crucial to be determined because it is proportional to the magnetic moment of the antiproton.Comment: 8 pages, 6 figures, just published (online so far) in Physics Letters

    Isotope Shift Measurements of Stable and Short-Lived Lithium Isotopes for Nuclear Charge Radii Determination

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    Changes in the mean-square nuclear charge radii along the lithium isotopic chain were determined using a combination of precise isotope shift measurements and theoretical atomic structure calculations. Nuclear charge radii of light elements are of high interest due to the appearance of the nuclear halo phenomenon in this region of the nuclear chart. During the past years we have developed a new laser spectroscopic approach to determine the charge radii of lithium isotopes which combines high sensitivity, speed, and accuracy to measure the extremely small field shift of an 8 ms lifetime isotope with production rates on the order of only 10,000 atoms/s. The method was applied to all bound isotopes of lithium including the two-neutron halo isotope Li-11 at the on-line isotope separators at GSI, Darmstadt, Germany and at TRIUMF, Vancouver, Canada. We describe the laser spectroscopic method in detail, present updated and improved values from theory and experiment, and discuss the results.Comment: 34 pages, 24 figures, 14 table

    Is there a best BĂŒchi automaton for explicit model checking?

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    LTL to BĂŒchi automata (BA) translators are traditionally optimized to produce automata with a small number of states or a small number of non-deterministic states. In this paper, we search for properties of BĂŒchi automata that really influence the performance of explicit model checkers. We do that by manual analysis of several automata and by experiments with common LTL-to-BA translators and realistic verification tasks. As a result of these experiences, we gain a better insight into the characteristics of automata that work well with Spin.Pƙekladače LTL na BĂŒchiho automaty jsou obvykle optimalizovĂĄny tak, aby produkovaly automaty s co nejmenĆĄĂ­m počtem stavĆŻ, či s co nejmenĆĄĂ­m počtem nedeterministickĂœch stavĆŻ. V tĂ©to publikaci hledĂĄme vlastnosti BĂŒchiho automatĆŻ, kterĂ© skutečně ovlivƈujĂ­ vĂœkon nĂĄstrojĆŻ pro explicitnĂ­ metodu ověƙovĂĄnĂ­ modelu (model checking). A to pomocĂ­ manuĂĄlnĂ­ analĂœzy několika automatĆŻ a experimenty s bÄ›ĆŸnĂœmi pƙekladače LTL na automaty a realistickĂœmi verifikačnĂ­mi Ășlohami. VĂœsledkem těchto experimentĆŻ je lepĆĄĂ­ porozuměnĂ­ charakteristik automatĆŻ, kterĂ© jsou dobrĂ© pro model checker Spin

    What Future for LEADER as a Catalyst of Social Innovation?

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    The LEADER Approach was initially designed to promote innovation in European rural areas by sustaining a bottom-up approach to local development. Nowadays the LEADER Approach includes elements that are generally considered to support social innovation. Classical features of the LEADER Approach \u2013 for example, area-based development strategies and cooperation and networking \u2013 are considered catalysts of social innovation as well. By drawing on key elements which support social innovation, the chapter discusses the future role of the LEADER Approach and Local Action Groups, and debates the challenges and potentials of the new rural development policy within emerging social, environmental and economic needs

    The proton radius puzzle

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    High-precision measurements of the proton radius from laser spectroscopy of muonic hydrogen demonstrated up to six standard deviations smaller values than obtained from electron-proton scattering and hydrogen spectroscopy. The status of this discrepancy, which is known as the proton radius puzzle will be discussed in this paper, complemented with the new insights obtained from spectroscopy of muonic deuterium.Comment: Moriond 2017 conference, 8 pages, 4 figure
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