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2,506,129 research outcomes, page 1 of 250,613
  • publication . Article . 1988
    Closed Access
    Authors:
    Jessberger, Elmar K.; Christoforidis, Alexander; Kissel, Jochen;
    Persistent Identifiers
    Publisher: Springer Science and Business Media LLC

    The chemical composition of the solid grains from comet Halley can be inferred from impact-ionization time-of-flight mass spectrometry. Halley's dust in the vicinity of the VEGA-1 spacecraft is a mixture of a refractory organic component and unequilibrated silicates, bu...

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  • publication . Conference object . 2009
    Closed Access English
    Authors:
    Antonio Riccardo Buonomo; Alessandro Lo Schiavo;
    Persistent Identifiers
    Country: Italy

    We present a nonlinear approach based on the perturbation theory to analyze the synchronized oscillations in circuits made up of two coupled LC differential oscillators (LC-VCO), widely used in RF systems to generate quadrature oscillations. Closed-form expressions are ...

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  • It is well documented that ancient sickle harvesting led to tough rachises, but the other seed dispersal properties in crop progenitors are rarely discussed. The first steps toward domestication are evolutionary responses for the recruitment of humans as dispersers. See...

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  • publication . Article . 2003
    Open Access
    Authors:
    Ulrich Meyer;
    Persistent Identifiers
    Publisher: Elsevier BV

    We study the average-case running-time of single-source shortest-path (SSSP) algorithms assuming arbitrary directed graphs with n nodes, m edges, and independent random edge weights uniformly distributed in [0,1]. We give the first label-setting and label-correcting alg...

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  • publication . Article . 2005
    Open Access
    Authors:
    Patrizia Polverino de Laureto; Vincenzo De Filippis; Elena Scaramella; Marcello Zambonin; Angelo Fontana;
    Persistent Identifiers
    Publisher: Wiley

    Proteolysis of hen egg-white lysozyme by thermolysin in 50% aqueous trifluoroethanol for 6–24 h at 40–52 °C produces a ‘nicked’ protein species which was purified to homogeneity by reverse-phase HPLC and characterized. Protein chemistry analytical methods were used to e...

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  • publication . Article . Other literature type . 2013
    Open Access
    Authors:
    Roscher, Christiane; Schumacher, Jens; Lipowsky, Annett; Gubsch, Marlén; Weigelt, Alexandra; Pompe, Sven; Kolle, Olaf; Buchmann, Nina; Schmid, Bernhard; Schulze, Ernst-Detlef;
    Publisher: Elsevier BV
    Country: Switzerland
    Project: SNSF | Mechanisms underlying pla... (310030E-131193), SNSF | Community history and eco... (31003A_130720)

    a b s t r a c t Several multi-year biodiversity experiments have shown positive species richness-productivity rela- tionships which strengthen over time, but the mechanisms which control productivity are not well understood. We used experimental grasslands (Jena Experim...

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  • publication . Preprint . Article . 2015
    Open Access
    Authors:
    Maria Cristina Recchioni; Gabriele Tedeschi; Mauro Gallegati;
    Persistent Identifiers
    Publisher: Elsevier
    Country: Spain

    In this paper we introduce a calibration procedure for validating of agent based models. Starting from the well-known financial model of (Brock and Hommes, 1998), we show how an appropriate calibration enables the model to describe price time series. We formulate the ca...

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  • publication . Article . 2012
    Authors:
    Domenico da Empoli;
    Persistent Identifiers
    Publisher: Bristol University Press

    Abstract This paper questions the long-established view in the Musgrave-Samuelson public goods theory about voters’ incentives to misrepresent their preferences for public goods. The arguments are structured as follows: The concept of‘democracy’ as ‘government by the pe...

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  • publication . Conference object . 2015
    Authors:
    Giordano Spadacini; Flavia Grassi; Sergio A. Pignari;
    Persistent Identifiers
    Publisher: IEEE

    The common-mode voltage induced by an external plane-wave field in the terminal loads of a bundle of twisted-wire pairs (TWPs) is investigated. In particular, a deterministic bundle is firstly considered (i.e., a bundle with TWPs running parallel each other), and the di...

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  • publication . Article . 2009
    Closed Access
    Authors:
    Diamond, Nina; Sherry, John F.; Muñiz, Albert M.; McGrath, Mary Ann; Kozinets, Robert V.; Borghini, Stefania;
    Persistent Identifiers
    Publisher: SAGE Publications

    This article describes an investigation of the American Girl brand that provides a more complete and holistic understanding of sociocultural branding. Recent research on emotional branding, together with prior work on brands’ symbolic nature and their role as relations...

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2,506,129 research outcomes, page 1 of 250,613