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Commentary on Antonelli, C.: Localized technological change: a model incorporating switching costs and R&D expenses with endowment advantages
No full textCommentary on Antonelli, C.: Localized technological change: a model incorporating switching costs and R&D expenses with endowment advantages. - In: Innovation in technology, industries, and institutions / ed. by Yuichi Shionoya ... - Ann Arbor : Univ. of Michigan Press, 1994. - S. 89-9
Near-Zero Modal-Dispersion (NEMO) Coupled-Core Multi-Core Fibers
Full text linkWepropose a design for coupled-core multi-core fibers that allows to achieve extremely low levels of modal dispersion. These fibers, which we dub NEar-zero MOdal-dispersion (NEMO) fibers, have an even number of cores regularly distributed on a circle, and the optimal design parameters follow from a simple condition independent of the number of cores. The modal-dispersion reduction trades off some of the fiber mode-mixing effectiveness, yet without compromising its beneficial property of mitigating nonlinear signal distortions. The semi-analytical tool developed for this study allows to effectively characterize the effect of various types of perturbations to the ideal fiber structure
Matthew effects and R&D subsidies: knowledge cumulability in high-tech and low-tech industries
No full textThe Dynamics of Localized Technical Changes: the Role of Demand-Pull in a Skill Intensive Industry. The case of the Italian Mechanical Industry
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