Trapping with biased diffusion species

We analyze a trapping reaction with a single penetrable trap, in a one dimensional lattice, where both species (particles and trap) are mobile and have a drift velocity. We obtain the density as seen from a reference system attached to the trap and from the laboratory frame. In addition we study the nearest neighbor distance to the trap. We exploit a stochastic model previously developed, and compare the results with numerical simulations, resulting in an excellent agreement.Comment: 6 pages, 7 Postscript figure

Technological collaboration : bridging the innovation gap between small and large firms

This paper analyses technological collaboration as an input to the innovation processes of SMEs. Technological collaboration may be a useful mechanism to offset some of the weaknesses in SMEs resource endowments and bring their innovation capabilities closer to that of their large counterparts. The results, based on a large longitudinal sample of Spanish manufacturing firms, show that technological collaboration is a critical factor in improving the capabilities and innovativeness of SMEs. While a general bridging of the gap between the innovativeness of SMEs and large firms was observed, the most significant advance was in product rather than process innovations

Geodesic connectedness and conjugate points in GRW spacetimes

Given two points of a Generalized Robertson-Walker spacetime, the existence, multiplicity and causal character of geodesic connecting them is characterized. Conjugate points of such geodesics are related to conjugate points of geodesics on the fiber, and Morse-type relations are obtained. Applications to bidimensional spacetimes and to GRW spacetimes satisfying the timelike convergence condition are also found.Comment: 31 pages and 2 figure

Novelty of product innovation : the role of different networks

In the current competitive scenario, firms are driven to introduce products with a higher degree of novelty. Consequently, there is a growing need to understand the critical success factors behind radical innovation. Specifically, this work empirically and theoretically analyses the role of different types of collaborative networks in achieving product innovation and, more precisely, the degree of novelty. Using a longitudinal data of Spanish manufacturing firms, our results show that the continuity on the co-operative strategy, the type of partner and the diversity of collaborative networks are critical factors in achieving a higher degree of novelty in product innovatio