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The paper analyses the entry strategies of software firms that adopt the Open Source production model. A new definition of business model is proposed. Empirical evidence, based on an exploratory survey taken on 146 Italian software firms * , shows that firms adapted to an environment dominated by incumbent standards by combining Open Source and proprietary(More)
This paper contributes to the literature on Open Source (OS) by providing empirical evidence on the incentives of firms that engage in the field. Data collected by a survey on 146 Italian companies supplying OS solutions (<i>Open Source firms</i>) show that (surprisingly) intrinsic, community-based incentives do play a role but are not, in general, put into(More)
The aim of this study was to quantitatively assess the field strength dependence of the transverse relaxation rate (R(2) *) change in cortical gray matter induced by hyperoxia and hyperoxic hypercapnia versus normoxia in an intra-individual comparison of young healthy volunteers. Medical air (21% O(2) ), pure oxygen and carbogen (95% O(2) , 5% CO(2) ) were(More)
PURPOSE The feasibility of highly resolved diffusion tensor imaging (DTI) of the human cervical spinal cord was tested on a clinical MR unit operating at 3.0 Tesla. DTI parametrical maps and signal-to-noise ratios (SNRs) were compared to results recorded at 1.5 Tesla. MATERIALS AND METHODS Eight healthy volunteers and one patient participated in the(More)
PURPOSE To develop a reliable technique for diffusion imaging of the human spinal cord at 1.5 Tesla and to assess potential differences in diffusion anisotropy in cross-sectional images. MATERIALS AND METHODS A single-shot echo-planar imaging sequence with double spin-echo diffusion preparation was optimized regarding cerebrospinal fluid artifacts,(More)
Innovation in the software sector is a widely debated issue. Which are the most important dimensions to assess innovation in this field? Can we measure innovative processes carried out by software companies and what kind of innovation do they develop? Are FOSS solutions more innovative than proprietary ones? These are the research questions we endeavor to(More)