Physical resources such as land, labour and livestock, and nonphysical resources such as indigenous knowledge and institutions of producers in the grain surplus and deficit regions of the Central Highlands of Ethiopia are examined under situation of environmental and policy risks. Frequency...

Multidisciplinary research methods such as observatory, participatory and multivariate regression analysis were employed to examine goals and strategies of two peasant communities in the Central highlands of Ethiopia. Continuing the family tradition of participating in social networks is found...

Descriptive and logit analysis were employed to investigate the impact of social, economic and technical factors on decisions to adopt new agricultural technologies in the Ada and Selale districts of Ethiopia. Peasants follow sequential adoption of technologies. In both study areas, priority is...

In the past, environmental decision making has been based on analysis of policy options with respect to emission reduction, deposition or concentration of pollutants and the design of preventive strategies using disparate single-model and discipline results. It was impossible to obtain optimal...

The 1990 Canadian long-range transport of air pollutants and acid deposition report divided North America into 40 sources of emission and 15 sensitive receptor sites. For the purpose of national policy making and international negotiation, the use of these large sources and few receptors may...

In the past environmental management practices have been based on disparate analysis of the impacts of pollutants on selected components of ecosystems. However, holistic analysis of emission reduction strategies is necessary to justify that actions taken to protect the environment would not...

Stochastic frontier production function analysis was performed to examine relative crop and milk production efficiency among peasants in Ada and Selale districts of the Central highlands of Ethiopia. The results indicate that Ada farmers exhibit relatively higher efficiency scores in cereal...

In the past environmental management practices have been based on disparate analysis of the impacts of pollutants on selected components of ecosystems. However, holistic analysis of emission reduction strategies is necessary to justify that actions taken to protect the environment would not...

Radical changes took place with respect to several agricultural policies in Ethiopia in 1990-91. Different agricultural technologies were being delivered by several international agencies. Shifts in government policies and technological intervention would induce changes in the production...

Decision support system often requires the combined knowledge of multiple domains. A knowledge-based approach is proposed to include not only the process modelling knowledge but also the descriptive knowledge in the integration. Descriptive knowledge such as survey statistics and expert opinions...