This paper is only a part of research completed for the PhD degree in agricultural economics in University of Miyazaki. The paper is subjected to further improve and finalised.

Investment models typically explain only a small share of the total investment variation within or between firms. A reason for this may be that those models do not explicitly differentiate between the decision to invest and the decision about the level of investment. In this paper, a two-steps...

Systemic weather risk is a major obstacle for the formation of private (nonsubsidized) crop insurance. This paper explores the possibility of spatial diversification of insurance by estimating the joint occurrence of unfavorable weather conditions in different locations. For that purpose copula...

This paper decomposes the variance in food industry return-on-assets into year, country, industry, and firm effects. Besides these main effects, we include several interactions and discuss their theoretical foundations. After determining effect significance in a nested ANOVA with a rotating...

Using a panel data set for about 70 countries, this paper jointly analyzes agri-investment trends and food security developments in vulnerable countries. This work empirically connects two mainly independent debates about impacts of agri-investments on food security and on the proposed...

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