This paper analyses the impact of the intensity of improved maize varieties adoption on food security and poverty using data collected in 2010 from maize-legume farming systems in rural Tanzania. We used a continuous treatment approach using generalized propensity score matching and parametric...

Often analysts must conduct risk analysis based on a small number of observations. This paper describes and illustrates the use of a kernel density estimation procedure to smooth out irregularities in such a sparse data set for simulating univariate and multivariate probability distributions.

This paper shows that the theory of circular causation as stated by Myrdal can be ast in a rigorous microeconomic neoclassical model. In doing this, Myrdal's theory of equilibria is extended by showing that existence of stable and unstable types of equilibria and the conditions under which easy...

Agncultural research managers are under increasing pressure to JUStify thetr dec1s10ns 111e empirical analysis of comparative advantage offers considerable potential to provide more precise mformatmn to research resource managers for their dec1s10ns. In this paper, the potential applications of...

Public research in developing countries in Asia continues to grow, but in many countries the rate of change has slowed and it is lower than growth in agriculture. In Asia, private sector research grew twice as fast as public research (see Table 1). Using a new set of data on private research,...

The NERICA (New Rice for Africa) rice varieties, developed by the Africa Rice Center during the 1990s, are providing hopes for raising the productivity of upland rice farmers in Africa because of their reported high yield potential and adaptability to the African conditions. The varieties are...