Agglomeration Economies, or production cost savings due to geographic clustering of firms and industries, can enhance the growth and development of firms, industries, regions and cities. We provide an overview of the theory and empirical literature of agglomeration, and highlight several applications from the cost function perspective. These applications include cost savings from density in the...

A matrix inversion algorithm based on the Sherman-Morrison formula is analyzed and compared with the classical Gauss-Jordan algorithm. In particular the results obtained in a Cray T3-E by the parallel versions of both algorithms are compared. Key-Words:Sherman-Morrison formula, matrix inversion, Parallel algorithms, Cray T3-E

The results of a large number of studies suggest that children with learning disorders are more likely to experience adjustment problems than are their typically developing peers (e.g., Morrison & Cosden, 1997; Wenz-Gross & Siperstein, 1998). Studies have indicated that in addition to their learning difficulties, these children evidence a high level of peer rejection and loneliness, a deficit i...

High megaherbivore species richness is documented in both fossil and contemporary ecosystems despite their high individual energy requirements. An extreme example of this is the Late Jurassic Morrison Formation, which was dominated by sauropod dinosaurs, the largest known terrestrial vertebrates. High sauropod diversity within the resource-limited Morrison is paradoxical, but might be explicabl...