We provide some existence results of stable pricings for natural monopoly as defined in the theory of contestable markets. The main addings are based on the assumption of separated markets and the possibilities of entries. We borrow tools from cooperative game theory. Following the work of...

Literature on environment and endogenous growth suggests that sustainable growth critically depends on technological innovations. In this paper, technological progress takes the form of an expansion in the variety of inputs. In a first scenario, a closed economy is endowed with a renewable...

CONTENTS: 1.Overview / Corinna Hawkes and Marie T. Ruel; 2. Agriculture, Food, and Health: Perspectives on a Long Relationship / Tim Lang; 3. Agricultural Technology and Health / Michael Lipton, Saurabh Sinha, and Rachel Blackman; 4. Agriculture and Nutrition Linkages: Old Lessons and New...

CONTENTS: Brief 1. Overview / Per Pinstrup-Andersen Brief 2. Farmer-Based Agro-Ecological Technology / Jules Pretty Brief 3. Conventional Research-Based Technology / Prabhu Pingali Brief 4. Modern Biotechnology / Calestous Juma Brief 5. Modern Technology for African Agriculture / Jennifer...

CONTENTS: Brief 1. Overview / John Pender and Peter Hazell Brief 2. Technologies for the East African Highlands / Frank Place Brief 3. Technologies for the tropical Andes / Tom Walker et al. Brief 4. Technologies for the Southeast Asian Uplands / Sushil Pandey Brief 5. Returns to public...

Tabla de matieras: Tecnologias para las tierras altas del este de Africa;tecnologias para las zonas tropicales de los Andes; Tecnologias para las tierras altas del sudeste de Asia; Utilidades de la inversion publica: datos de la India y China; Estrategias de desarrollo para las zonas semiaridas del...

"Good health and productive agriculture are both essential in the fight against poverty. In a rapidly changing world, agriculture faces many challenges, both old (natural resource constraints, extreme weather conditions, and agricultural pests) and new (globalization, environmental degradation,...