Turbulence statistics in smooth wall oscillatory boundary layer flow

This work has been carried out within the SINBAD project, funded through the UK’s Engineering and Physical Sciences Research Council (EPSRC grant EP/J00507X/1). PS acknowledges the funding from the University of Aberdeen to support his Honoray Research Fellowship and funding from the Ministero dell’Istruzione dell’Universit`a e della Ricerca through PRIN 2012 “Hydromorphodynamic and modeling of coastal processes for engineering purposes”. The authors acknowledge the support of the technical staff at the University of Aberdeen, especially Fluids Laboratory Technician Roy Gillanders. The experimental and numerical datasets presented in this paper are available on https://dx.doi.org/10.5281/zenodo.1095116.Peer reviewedPostprin

An empirical model for velocity in rough turbulent oscillatory boundary layers

Acknowledgements This work was conducted as part of the first author’s PhD, funded by the Carnegie Trust for the Universities of Scotland, and is also included in Dunbar (2022). The authors are grateful to Dr. Jing Yuan (Tsinghua University) for providing the experimental data from Yuan and Madsen (2014).Peer reviewedPublisher PD

An experimental and numerical study of turbulent oscillatory flow over an irregular rough wall

Acknowledgements. This work was conducted as part of the first author’s PhD project and is also included in Dunbar (2022). The authors are grateful for the support of the technical staff at the University of Aberdeen, particularly Fluids Lab technicians Roy Gillanders and Jack Milne. Additionally, the authors are grateful to Dr. Stuart Cameron and Dr. Mark Stewart for assistance with the design and manufacture of the experimental and numerical roughness, and Prof. Vladimir Nikora for his suggestion to look for evidence of secondary flows. Funding. The PhD project from which this work is derived was funded by the Carnegie Trust for the Universities of Scotland (D.D., grant no. PHD00771). P.S. acknowledges the support received from the University of Catania by funding the research project ’Valutazione del rischio idraulico in sistemi complessi (VARIO)’.Peer reviewedPublisher PD

Large-scale wave breaking over a barred beach : SPH numerical simulation and comparison with experiments

Acknowledgements The experiments were supported by the European Community’s Horizon 2020 Programme through the grant to the budget of the integrated infrastructure initiative HYDRALAB＋, Contract no. 654110, and were conducted as part of the transnational access project HYBRID. Dr. Corrado Altomare acknowledges funding from the Spanish government and the European Social Found (ESF) under the programme ’Ramón y Cajal 2020’ (RYC2020-030197- /AEI/10.13039/501100011033). Pietro Scandura acknowledges the support received from the University of Catania, Italy by funding the research project ‘Valutazione del rischio idraulico in sistemi complessi (VARIO)’.Peer reviewedPublisher PD

Exploring the effects of creative CEO leadership on innovation in high-technology firms.

a r t i c l e i n f o a b s t r a c t This study introduces two dimensions of strategic leadership, termed operational and creative specifically developed for top executives of high-technology firms. Creative leadership reflects a CEO's emphasis on developing social and human capital and investing in the firm's internal knowledge development. We contrast this with operational leadership which reflects a CEO's ability to explore new paths of growth as well as exploit existing ones by redefining and extending the boundaries of the firm to new product and market domains. Hypotheses relating these two dimensions of leadership with innovation quantity, innovation resonance and novelty are tested using a sample of 77 high-technology firms. © 2009 Elsevier Inc. All rights reserved. Keywords: More than half of economic growth during 1945-2002 is attributed to innovations within the high-technology sector (Leary, 2002). For high-technology firms, innovation, organizational learning and the creation of new knowledge are vital for long-term survival and renewal because they have to deal with rapid and discontinuous change (Makri, Lane, & Gomez-Mejia, 2006). As such, executive leaders are constantly challenged to leverage the intellectual capital of their firms. This scenario raises the question: how might creative leadership behaviors must executives of technology-intensive 2 organizations balance in order to enhance innovation quantity, innovation quality and innovation novelty? Although leadership and the influence tactics leaders use affect follower's willingness to engage in creative ventures (Mumford, Scott, Gaddos, & Strange, 2002), research in the area of leader influence on creativity and innovation has been scarce (e.g. Cummings & Oldham, 1997; Mumford et al., 2002; Tierney, Farmer, & Graen, 1999). Most studies in strategic leadership that looked at this issue (e.g. Elenkov, Judge, & Wright, 2005; Jung, Chow, & Wu, 2003) have used the traditional conceptualizations of transactional and transformational leadership (e.g. Bass, 1985) to capture CEO leadership characteristics. While these traditional conceptualizations can reflect the CEO's relationship with followers, the concept of strategic leadership in the context of hightechnology firms calls for constructs reflective of the CEO's overall effectiveness in spearheading invention, innovation and commercialization. More specifically, there is a need for refinement of the constructs that measure creative leadership to reflect the CEO's ability to create new knowledge as well as commercialize existing knowledge and derive profit from it. In this study, we examine the relationship between innovation quantity, quality, and novelty and creative leadership. Because the innovation value chain involves idea generation (invention), idea development, and idea commercialization, effective leaders are those who can simultaneously explore and exploit, while at the same time can lead creatively and operationally. The contribution of our research is twofold. First, we bridge the existing gap between creative leadership and organizational innovation (Bontis, Crossan, & Hulland, 2002; Jung et al., 2003; Vera & Crossan, 2004). While several studies examined the relationship between CEO leadership and firm performance, only a handful addressed the effects of leadership on innovation albeit using the traditional measures of transactional and transformational leadership (Elenkov & Manev, 2005; Elenkov et al., 2005; Jung The Leadership Quarterly 21 (2010) 2 Consistent with much of the literature, we use the terms "high technology," "technology intensive," and "R&D-intensive" interchangeably. 1048-9843/$ -see front matte

Vectorial magnetometers for noise reduction in volcanomagnetic monitoring at Mt Etna

The volcanomagnetic monitoring is critically dependent on the ability to detect and isolate magnetic variations related to volcanic activity. Accurate detection of volcanomagnetic anomalies attributable to the volcano’s dynamics requires removing from measurements of the earth’s magnetic field, fluctuations of external origin which may be up to hundreds of nanotesla during geomagnetic storms. The commonly used method of taking simple differences of the total intensity with respect to the simultaneous value at a remote reference is partially successful. Variations in the difference fields arise principally from contrasting electromagnetic properties at magnetometer sites. To improve the noise reduction of geomagnetic data from magnetic network of Mt Etna we developed an adaptive filtering. Magnetic vector data are included as input to the filter, to account for the orientation of the disturbance field. The filter is able to estimate and rectify the model parameters continuously by means of new observations, so that predictions match the observed data. The error of state estimation has been decreased and the filtering accuracy improved. Experimental data collected on Mt Etna during 2010 are analyzed to relate the field variation at a given station to the field at other sites filtering out undesired noise and enhancing signal-to-noise ratio

UFGM - 2006 Annual Report

INGV, SEZIONE DI CATANIAPublished2.6. TTC - Laboratorio di gravimetria, magnetismo ed elettromagnetismo in aree attiveope

Use of domesticated pigs by Mesolithic hunter-gatherers in northwestern Europe

Acknowledgements We thank the Archaeological State Museum Schleswig-Holstein, the Archaeological State Offices of Brandenburg, Lower Saxony and Saxony and the following individuals who provided sample material: Betty Arndt, Jo¨rg Ewersen, Frederick Feulner, Susanne Hanik, Ru¨diger Krause, Jochen Reinhard, Uwe Reuter, Karl-Heinz Ro¨hrig, Maguerita Scha¨fer, Jo¨rg Schibler, Reinhold Schoon, Regina Smolnik, Thomas Terberger and Ingrid Ulbricht. We are grateful to Ulrich Schmo¨lcke, Michael Forster, Peter Forster and Aikaterini Glykou for their support and comments on the manuscript. We also thank many institutions and individuals that provided sample material and access to collections, especially the curators of the Museum fu¨r Naturkunde, Berlin; Muse´um National d0 Histoire Naturelle, Paris; Smithsonian Institution, National Museum of Natural History, Washington D.C.; Zoologische Staatssammlung, Mu¨nchen; Museum fu¨r Haustierkunde, Halle; the American Museum of Natural History, New-York. This work was funded by the Graduate School ‘Human Development in Landscapes’ at Kiel University (CAU) and supported by NERC project Grant NE/F003382/1. Radiocarbon dating was carried out at the Leibniz Laboratory, CAU. This work is licensed under a Creative Commons AttributionNonCommercial-NoDerivs 3.0 Unported License.Peer reviewedPublisher PD

Defining disease modification in myelofibrosis in the era of targeted therapy

The development of targeted therapies for the treatment of myelofibrosis highlights a unique issue in a field that has historically relied on symptom relief, rather than survival benefit or modification of disease course, as key response criteria. There is, therefore, a need to understand what constitutes disease modification of myelofibrosis to advance appropriate drug development and therapeutic pathways. Here, the authors discuss recent clinical trial data of agents in development and dissect the potential for novel end points to act as disease modifying parameters. Using the rationale garnered from latest clinical and scientific evidence, the authors propose a definition of disease modification in myelofibrosis. With improved overall survival a critical outcome, alongside the normalization of hematopoiesis and improvement in bone marrow fibrosis, there will be an increasing need for surrogate measures of survival for use in the early stages of trials. As such, the design of future clinical trials will require re-evaluation and updating to incorporate informative parameters and end points with standardized definitions and methodologies