in this research, we have investigated the relationship between psychological and social factors and green consumer behavior in tehran. with a sample size of 316, we have examined 15 hypotheses. the positive significant relationship between environmental attitudes, personal norms, perceived consumer effectiveness, and social (injunctive) norms with green consumer behavior dimensions (green purc...

the main goal in carrying out this paper was to investigate the impacts of government’s support policies on income risk of egg producers in iran during years 1989-2008. index ccv, was employed to assess the variation in income of the producers. the results revealed that, market price support along with the overall support policies lead to a lowering of the percentage variations in income risk o...

This paper reflects on lessons learned about contemporary teaching at two very different universities located in Mauritius and South Africa. Thinking with digital capabilities as a crucial dimension of transformation, it traces the evolution series commitments to pedagogy first written up Conversation article 2017, which emphasised need for undergraduate students actively contribute global disc...

the food chain refers to a natural system by which energy is transmitted from one organism to another. in fact, a food chain consists of producers, consumers and decomposition. presence of complex food web increase the stability of the ecosystem. classical food chain theory arises from lotka-volterra model. in the present paper, the dynamics behavior of three level food chain is studied. a syst...

We study the dynamics of co-evolution of producers and customers described by bit-strings representing individual traits. Individual ”sizelike” properties are controlled by binary encounters which outcome depends upon a recognition process. Depending upon the parameter set-up, mutual selection of producers and customers results in different types of attractors, either an exclusive niches regime...

price transmission is one of the most important factors that affects the producers, consumers and marketing agents’ welfare. market structure affects price transmission. asymmetric price transmission affects the marketing margin, increases marketing agents’ profit and decreases producers and consumers’ welfare. in recent years high prices of beef has caused consumers’ dissatisfaction however, p...