1,924 research outputs found
Silen, Juan Angel, We, the Puerto Rican People – A Story of Oppression and Resistance, New York, Monthly Review Press, 1971, 75 p.
Gauvreau, D. Gregory, J. Kempeneers, M. et Piché, V. éd. (1986) Démographie et sous-développement dans le Tiers-Monde. Montréal, Université McGill, Centre for Developing Area Studies, Monograph Series no 21, 316 p.
Collectif (1987) Survivances et modèles de développement. Revue internationale d’action communautaire, 17 (57).
Weissman, Steve et al., The Trojan Horse : A Radical Look at Foreign Air, Pacific Studies Center and the North American Congress on Latin America (A Ramparts Press Reader), San Francisco, 1974, 249 p.
Paquette, Romain (1982) Désengagement paysan et sous-production alimentaire. Montréal, Presses de l’Université de Montréal, 212 p.
Desouches-Aznar, Marie-Brigitte, Calpulalpan, Reforma agraria e industria nueva en un municipio del centro mexicano, Paris, Institut des Hautes Études de l’Amérique latine, laboratoire associé 111, 1970, 56 p.
Lewis, Gordon K., Notes on the Puerto Rican Revolution. An Essay on American Dominance and Caribbean Resistance, Monthly Review Press, New York, 1974, 288 p.
Spatio-temporal patterns in a mechanical model for mesenchymal morphogenesis
We present an in-depth study of spatio-temporal patterns in a simplified version of a mechanical model for pattern formation in mesenchymal morphogenesis. We briefly motivate the derivation of the model and show how to choose realistic boundary conditions to make the system well-posed. We firstly consider one-dimensional patterns and carry out a nonlinear perturbation analysis for the case where the uniform steady state is linearly unstable to a single mode. In two-dimensions, we show that if the displacement field in the model is represented as a sum of orthogonal parts, then the model can be decomposed into two sub-models, only one of which is capable of generating pattern. We thus focus on this particular sub-model. We present a nonlinear analysis of spatio-temporal patterns exhibited by the sub-model on a square domain and discuss mode interaction. Our analysis shows that when a two-dimensional mode number admits two or more degenerate mode pairs, the solution of the full nonlinear system of partial differential equations is a mixed mode solution in which all the degenerate mode pairs are represented in a frequency locked oscillation
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