This paper develops and estimates a simple on-the-job search model with skills accumulation. In our model, contrary to previous works, skills are not fully firm-specific nor general but partially transferable. When a worker experience a job transition from firm A to firmB a fraction τ of the skills are lost where τ depends on some distance between firm A and B. In this framework the interaction...

We prove that, given a sequence of points in a complex domain Ω without accumulation points, there are functions having prescribed values at the points of the sequence and, simultaneously, having dense orbit in the space of holomorphic functions on Ω . The orbit is taken with respect to any fixed nonscalar differential operator generated by an entire function of subexponential type, thereby ext...

Wide field BVI photometry and CO(1→0) observations are presented in the region of the open cluster NGC 6520 and the dark molecular cloud Barnard 86. From the analysis of the optical data we find that the cluster is rather compact, with a radius of 1.0±0.5 arcmin, smaller than previous estimates. The cluster age is 150±50 Myr and the reddening EB−V =0.42±0.10. The distance from the Sun is estima...

It is known that accumulation points of a pointwise bounded sequence (f n) n of continuous functions on a Polish space are pointwise limits of subsequences if all accumulation points are Borel. Here we present a quantitative variant of this result: For 0 0 and any accumulation point f there is a subsequence (f nk) k with lim sup k jf(x) ? f nk (x)j 0 for all x provided that every accumulation p...

Information-systems (IS) has become a 'broad church' that includes academics and practitioners in several areas of theory and application. Although collaborations among these and other groups are hailed as a wealthy sign, it is not clear yet though how collaborations are really contributing to firm up, maintain or expand the boundaries of IS as a relevant discipline. We assess the extent to whi...

The effect of 250 generations of mutation accumulation (MA) on the second chromosome competitive viability of Drosophila melanogaster was analyzed both in homozygous and heterozygous conditions. We used full-sib MA lines, where selection hampers the accumulation of severely deleterious mutations but is ineffective against mildly deleterious ones. A large control population was simultaneously ev...

The dynamics of range formation are important for understanding and predicting species distributions. Here, we focus on a process that has thus far been overlooked in the context of range formation; the accumulation of mutation load. We find that mutation accumulation severely reduces the extent of a range across an environmental gradient, especially when dispersal is limited, growth rate is lo...

Under the assumption that knowledge is endogenously produced through a learning-by-doing process, we show that a standard one-sector real business cycle model augmented with only a learning-by-doing technology can exhibit an expectations-driven business cycle in response to news about a future temporary change in total factor productivity. News about future productivity immediately increases th...

This paper provides a new metric, knowledge management performance index (KMPI), for assessing the performance of a firm in its knowledge management (KM) at a point in time. Firms are assumed to have always been oriented toward accumulating and applying knowledge to create economic value and competitive advantage. We therefore suggest the need for a KMPI which we have defined as a logistic func...