A Process Approach to Corporate Coherence

We address the notion of 'corporate coherence', recently made prominent by Teece, Rumelt, Dosi and Winter (1994). We argue that the literature is confused on the meaning of the notion (and similar notions) in a number of dimensions. Drawing on insights from market-process theories, we put forward a dynamic understanding of corporate coherence as involving the corporate capacity to strike a favorable balance between the production and the exploitation of new knowledge. This argument is elaborated drawing on Austrian, evolutionary and post- Marshallian economics.Corporate coherence, knowledge, competences

Explanation and Acquisition in Expert Systems Using Support Knowledge

There are many criteria that an expert system must meet in order to be considered successful in a domain. An important criterion is that it be able to solve problems in its domain with a satisfactory level of expertise. In addition to this an expert system should also be able to communicate well with its users. This means not only asking for relevant information when needed but also providing explanations of its reasoning process that are acceptable to a user. Furthermore, an expert system should be easily .expandable to incorporate new knowledge or correct outdated or erroneous knowledge

Tracer Dispersion in a Self-Organized Critical System

We have studied experimentally transport properties in a slowly driven granular system which recently was shown to display self-organized criticality [Frette {\em et al., Nature} {\bf 379}, 49 (1996)]. Tracer particles were added to a pile and their transit times measured. The distribution of transit times is a constant with a crossover to a decaying power law. The average transport velocity decreases with system size. This is due to an increase in the active zone depth with system size. The relaxation processes generate coherently moving regions of grains mixed with convection. This picture is supported by considering transport in a $1D$ cellular automaton modeling the experiment.Comment: 4 pages, RevTex, 1 Encapsulated PostScript and 4 PostScript available upon request, Submitted to Phys. Rev. Let