School-feeding is an important intervention to attract children to school and augment their learning. The benefits of school-feeding cover several domains. Key to the overall assessment of these benefits is understanding how different implementation model

As structuralists assert, structural constraints define the probabilities of social interactions. I argue, however, that structural constraints are not static. Using Carley¡¯s (1991) social interaction model as a starting point, I discuss three modified scenarios to illustrate two points: 1)...

In this note, we present some refinements of the well-known domination inequalities. Let X be an adapted positive cadlag process dominated by a predictable increasing process A with A0=0. We derive some sharper constants in the inequalities. For the widely used inequality...

Although decades of research have contributed to understanding the operation and implications of minority-concentrated industrial sectors, the reasons for concentration in some sectors but not others remain unclear. To address the question of why some sectors are minority concentrated, this...

The zero-inflated Poisson regression model is a special case of finite mixture models that is useful for count data containing many zeros. Typically, maximum likelihood (ML) estimation is used for fitting such models. However, it is well known that the ML estimator is highly sensitive to the...

In this paper we explore how a value chain framework can inform the design of interventions for achieving improved nutrition. Conceptually, there are three main channels for value chains to improve nutrition: (1) through increased consumption of nutritious foods (a demand side pathway); or (2)...

This review highlights three main findings. First, school feeding programs in low-income countries exhibit large variation in cost, with concomitant opportunities for cost containment. Second, as countries get richer, school feeding costs become a much smaller proportion of the investment in...