diversification of phosphorus sources can bring substantial synergy effects within all thesustainable development domains: environmental, economic and social, and such an opportunity should not beoverlooked. urban sinks accumulate phosphorus and other elements and may serve as sources of secondaryraw materials. this paper evaluates phosphorus sources based on their total material requirement (t...

This paper examines the change in the nature of food demand in India in the last twenty years. It identifies two distinct stages of diet transition associated with the period of economic growth. During the first stage, income-induced diet diversification, consumers move away from inferior goods to superior foods and substitute some traditional staples, especially rice. In the second stage, diet...

Why is GDP so much more volatile in poor countries than in rich ones? To answer this question, we propose a theory of technological diversification. Production makes use of different input varieties, which are subject to imperfectly correlated shocks. Technological progress takes the form of an increase in the number of varieties, raising average productivity. In addition, the expansion in the ...

This paper provides empirical evidence of an U-shaped relationship between the extent of the market (size of the relevant urban market) and the pattern of crop specialization in a village economy. We use the recent two-stage estimator developed by Lewbel (2007) and exploit heteroskedasticity for identification of the causal effects of market size. The results suggest that the portfolio of crops...

INTRODUCTION: High and sustainable export growth, mainly driven by agricultural productivity, is critical for Zambia to reduce poverty and foster economic development. Despite the fact that, Zambia’s economic policies have for a long time emphasised export diversification, copper remains the main export commodity for Zambia. Coffee, an essential export commodity in most eastern African countrie...

With increasingly fragmented rangelands, restricted mobility and climatic stress, diversification has accelerated among East African pastoralists. Diversification is also promoted as a climate change adaptation strategy to reduce exposure. Through study of Maasai communal land in southern Kenya, we analyze how pastoralists navigate changing access key productive resources that are linked proces...

By analyzing the distribution of revenues across the production sectors of quoted firms we suggest a novel dimension that drives the firms diversification process at country level. Data show a non trivial macro regional clustering of the diversification process, which underlines the relevance of geopolitical environments in determining the microscopic dynamics of economic entities. These findin...

This paper considers a monopolistic manufacturer that makes supplier selection and ordering decisions in a setting in which suppliers are unreliable. We find that the manufacturer’s optimal decision to diversify orders across multiple suppliers might not only arise as a result of managing supply risk, but it could also be due to the concavity of the manufacturer’s revenue function or due to the...

Food-based approaches that focus on dietary diversification are effective strategies for reducing microand macro-nutrient deficiencies in malnourished populations. These approaches such as Helen Keller International‘s (HKI) homestead food production (HFP) model seek to improve the micronutrient intake of individuals, increase household food security, and advance women‘s empowerment. The standar...