In this paper, we develop an OLG model where both longevity and fertility are endogenous. The authorities provide two types of public expenditures: health services and environmental maintenance that participate to increase agents’ life expectancy. Under proper conditions on the fiscal policy implemented by the government, the global dynamics is featured by multiple equilibria: a high growth rat...

In automatic recognition of non-native proper names, it is critical to be able to handle a variety of different pronunciations. Traditionally, this has been solved by including alternative pronunciation variants in the recognition lexicon at the risk of introducing unwanted confusion between different name entries. In this paper we propose a pronunciation variant selection criterion that aims t...

in this paper, the performance of 11 different distances for image retrieval and classification, based on color, shape and texture, is evaluated. the precision-recall measure and the correct classification rate of the k-nn classifier are used to evaluate retrieval and classification performances, respectively. the experimental results for a database of 1000 images from 10 different semantic gro...

We consider a discrete-time stochastic growth model on d-dimensional lattice. The growth model describes various interesting examples such as oriented site/bond percolation, directed polymers in random environment, time discretizations of binary contact path process and the voter model. We study the phase transition for the growth rate of the “total number of particles” in this framework. The m...

The proper orientation number χ→(G) of a graph G is the minimum k such that there exists an edges with all vertex-outdegrees at most and for any adjacent vertices, outdegrees are different. Two major conjectures about resolved. First it shown, planar 14. Secondly, shown every graph, , where r=χ(G) usual chromatic maximum average degree taken over subgraphs G. Several other related results deriv...