1,531 research outputs found

    The moderating role of social networks within the radical innovation process:a multidimensionality of human capital-based analysis

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    Knowledge, or intellectual capital, and innovation continue to be key areas subject to rapid change in the current environment. The complexity of the relationship between knowledge and innovation leads to the in-depth study of more specific linkages. Intellectual capital is divided into human, organisational and social capital. This paper attempts to provide empirical evidence relating to the relationship between human capital and radical innovation, along with social networks. Using data collected via a questionnaire, our hypotheses were tested empirically in a sample of 251 Spanish technology-intensive manufacturing firms. The paper provides new, empirically-based insights into the study of radical innovation by adopting a research framework which is built upon the intellectual capital-based view of the firm, based on the multidimensionality of human capital. The main results show the positive and statistically significant role of human assets in radical innovation, and, regarding a moderating role, indicate the existence of a substitution effect between one of the human capital components – experience and abilities – and social networks

    O capital relacional como fonte de inovaçao tecnológica

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    O conhecimento inter-organizacional, assim como suas diferentes manifestaçoes, jogam um papel crucial na hom de desenvolver de forma efetiva os processos e produtos da empresa (Teece, 1998; Alegre y Lapiedra, 2005). O presente trabalho explora o impacto  que podem ter as diferentes manifestaçoes de conhecimento inter-organizacional, baseado nas lelaçoes externas ou capital relacional, sobre a capacidade de inovaçao em empresas de serviços profissionais, Para alcançar este propósito, em uma primeira parte realiza-se uma analise fatorial exploratoria de onde se extraem os tres blocos principais de capital relacional: relaçes com clientes, alianças e reputaçao corporativa, e relaçoes com fornecedores. Na etapa seguinte, estabelecem-se as hipoteses basicas que determinam uma influencia positiva des les tipos de capital relacional sobre a inovaçao empresarial. Dos resultados empiricos alcançados para o caso das empresas de serviços profissionais espanholas, destaca-se o papel que tem as relaçoes com clientes nos resultados de inovaçao, assim como as alianças estabelecidas e a reputaçao das empresas.La connaissance interorganisationnelle, ainsi que ses différentes manifestations, jouent un role important dans Ie developpement effectif des processus et produits de I'entreprise (Teece, 1998: Alegre y Lapiedra, 2005).Ce travail analyse l'impact que peuvent avoir les difflérentes manifestions de connaissance interorganisationnelle, fondees sur les relations externes ou capital relationnel, sur la capacite d'innovation dans les entreprises de services protessionnels dans une premiere partie, une analyse factorielle exploratoire est effecttuée, et 3 blocs principaux de capitalrelationnel en sont extraits: relations avec les clients, alliances et reputation corporative, et relations avec les fournisseurs.Dans une deuxieme etape, les hypotheses fondamentales determinant une influence positive de ces types de capital relationnel sur I'innovation dans I'entreprise sont etablies. Parmi les resultats empiriques atteints dans Ie cas des entreprises de services professionnels espagnols, il faut souligner Ie role que les relations avec les clients ont dans les resultats d'innovation, de meme que les alliances realisees ella reputation des entreprises.Inter-organisational knowledge, as well as its different manifestations, plays a crucial role when effectively developing a company's processes and products (Teece, 1998; Alegre and Lapiedra, 2005). The present work explored the impact of different manifestations of inter-organisational knowledge (based on external relationships or relational capital) regarding innovation capacity in professional service-providing companies. An exploratory factorial analysis was thus carried out where three main blocks of relational capital were extracted: client relationships, alliances and corporate reputation, and relationships with suppliers. The basic hypotheses determining the positive influence of these types of relational capital on entrepreneurial innovation were then posed during the following stage. The results regarding spanish professional service companies showed the positive effect of client relationships on innovation, as well as established alliances and companies' reputations.EI conocimiento interorganizativo, asi como sus diferentes manifestaciones, desarrollan un papel crucial a la hora de desarrollar de forma efectiva los procesos y productos de la empresa (Teece. 1998: Alegre y Lacecra. 2005). EI presente trabajo explica el impacto que pueden tener las diferentes manifestaciones de conocimiento interorganizativo, basaco en las relaciones externas o capital reacional, sobre la capacidad de lnovación tecnológica en empresas de servicios profesionales. Para lograr este propósito, en un primer apartado se lIeva a cabo un analisis factorial exploratorio (AFE) de donde se extraen los tres bloques principales de capital relacional: relaciones con clientes, alianzas y reputación corporativa, y relaciones con proveedores.  En la etapa siguiente se plantean las hipótesis básicas que determinan una influencia positiva de estos tipos de capital relacional sobre la innovación tecnológica. De los resultados empiricos alcanzados para el caso de las empresas de servicios profesionales españolas, destacan el papel que tienen en los resultados de innovación las relaciores con clientes, así como las alianzas establecidas y la reputación con las empresas

    Cover contact graphs

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    We study problems that arise in the context of covering certain geometric objects called seeds (e.g., points or disks) by a set of other geometric objects called cover (e.g., a set of disks or homothetic triangles). We insist that the interiors of the seeds and the cover elements are pairwise disjoint, respectively, but they can touch. We call the contact graph of a cover a cover contact graph (CCG). We are interested in three types of tasks, both in the general case and in the special case of seeds on a line: (a) deciding whether a given seed set has a connected CCG, (b) deciding whether a given graph has a realization as a CCG on a given seed set, and (c) bounding the sizes of certain classes of CCG’s. Concerning (a) we give efficient algorithms for the case that seeds are points and show that the problem becomes hard if seeds and covers are disks. Concerning (b) we show that this problem is hard even for point seeds and disk covers (given a fixed correspondence between graph vertices and seeds). Concerning (c) we obtain upper and lower bounds on the number of CCG’s for point seeds

    Cover Contact Graphs

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    Es una ponencia presentada al 15th International Symposium on Graph Drawing (2007)We study problems that arise in the context of covering certain geometric objects (so-called seeds, e.g., points or disks) by a set of other geometric objects (a so-called cover, e.g., a set of disks or homothetic triangles). We insist that the interiors of the seeds and the cover elements are pairwise disjoint, but they can touch. We call the contact graph of a cover a cover contact graph (CCG). We are interested in two types of tasks: (a) deciding whether a given seed set has a connected CCG, and (b) deciding whether a given graph has a realization as a CCG on a given seed set. Concerning task (a) we give efficient algorithms for the case that seeds are points and covers are disks or triangles. We show that the problem becomes NP-hard if seeds and covers are disks. Concerning task (b) we show that it is even NP-hard for point seeds and disk covers (given a fixed correspondence between vertices and seeds).German Research Foundation WO 758/4-

    An Overview of the 2014 ALMA Long Baseline Campaign

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    A major goal of the Atacama Large Millimeter/submillimeter Array (ALMA) is to make accurate images with resolutions of tens of milliarcseconds, which at submillimeter (submm) wavelengths requires baselines up to ~15 km. To develop and test this capability, a Long Baseline Campaign (LBC) was carried out from September to late November 2014, culminating in end-to-end observations, calibrations, and imaging of selected Science Verification (SV) targets. This paper presents an overview of the campaign and its main results, including an investigation of the short-term coherence properties and systematic phase errors over the long baselines at the ALMA site, a summary of the SV targets and observations, and recommendations for science observing strategies at long baselines. Deep ALMA images of the quasar 3C138 at 97 and 241 GHz are also compared to VLA 43 GHz results, demonstrating an agreement at a level of a few percent. As a result of the extensive program of LBC testing, the highly successful SV imaging at long baselines achieved angular resolutions as fine as 19 mas at ~350 GHz. Observing with ALMA on baselines of up to 15 km is now possible, and opens up new parameter space for submm astronomy.Comment: 11 pages, 7 figures, 2 tables; accepted for publication in the Astrophysical Journal Letters; this version with small changes to affiliation

    Measurement of the cross-section and charge asymmetry of WW bosons produced in proton-proton collisions at s=8\sqrt{s}=8 TeV with the ATLAS detector

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    This paper presents measurements of the W+μ+νW^+ \rightarrow \mu^+\nu and WμνW^- \rightarrow \mu^-\nu cross-sections and the associated charge asymmetry as a function of the absolute pseudorapidity of the decay muon. The data were collected in proton--proton collisions at a centre-of-mass energy of 8 TeV with the ATLAS experiment at the LHC and correspond to a total integrated luminosity of 20.2~\mbox{fb^{-1}}. The precision of the cross-section measurements varies between 0.8% to 1.5% as a function of the pseudorapidity, excluding the 1.9% uncertainty on the integrated luminosity. The charge asymmetry is measured with an uncertainty between 0.002 and 0.003. The results are compared with predictions based on next-to-next-to-leading-order calculations with various parton distribution functions and have the sensitivity to discriminate between them.Comment: 38 pages in total, author list starting page 22, 5 figures, 4 tables, submitted to EPJC. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2017-13

    Search for new phenomena in final states with an energetic jet and large missing transverse momentum in pp collisions at √ s = 8 TeV with the ATLAS detector

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    Results of a search for new phenomena in final states with an energetic jet and large missing transverse momentum are reported. The search uses 20.3 fb−1 of √ s = 8 TeV data collected in 2012 with the ATLAS detector at the LHC. Events are required to have at least one jet with pT > 120 GeV and no leptons. Nine signal regions are considered with increasing missing transverse momentum requirements between Emiss T > 150 GeV and Emiss T > 700 GeV. Good agreement is observed between the number of events in data and Standard Model expectations. The results are translated into exclusion limits on models with either large extra spatial dimensions, pair production of weakly interacting dark matter candidates, or production of very light gravitinos in a gauge-mediated supersymmetric model. In addition, limits on the production of an invisibly decaying Higgs-like boson leading to similar topologies in the final state are presente

    Search for chargino-neutralino production with mass splittings near the electroweak scale in three-lepton final states in √s=13 TeV pp collisions with the ATLAS detector

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    A search for supersymmetry through the pair production of electroweakinos with mass splittings near the electroweak scale and decaying via on-shell W and Z bosons is presented for a three-lepton final state. The analyzed proton-proton collision data taken at a center-of-mass energy of √s=13  TeV were collected between 2015 and 2018 by the ATLAS experiment at the Large Hadron Collider, corresponding to an integrated luminosity of 139  fb−1. A search, emulating the recursive jigsaw reconstruction technique with easily reproducible laboratory-frame variables, is performed. The two excesses observed in the 2015–2016 data recursive jigsaw analysis in the low-mass three-lepton phase space are reproduced. Results with the full data set are in agreement with the Standard Model expectations. They are interpreted to set exclusion limits at the 95% confidence level on simplified models of chargino-neutralino pair production for masses up to 345 GeV

    Search for direct stau production in events with two hadronic tau-leptons in root s=13 TeV pp collisions with the ATLAS detector

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    A search for the direct production of the supersymmetric partners ofτ-leptons (staus) in final stateswith two hadronically decayingτ-leptons is presented. The analysis uses a dataset of pp collisions corresponding to an integrated luminosity of139fb−1, recorded with the ATLAS detector at the LargeHadron Collider at a center-of-mass energy of 13 TeV. No significant deviation from the expected StandardModel background is observed. Limits are derived in scenarios of direct production of stau pairs with eachstau decaying into the stable lightest neutralino and oneτ-lepton in simplified models where the two staumass eigenstates are degenerate. Stau masses from 120 GeV to 390 GeV are excluded at 95% confidencelevel for a massless lightest neutralino
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