Grain markets of Alemata, Maychew, Mokone, Mekelle and Himora are observed to operate in highly inefficient market structure, with very low level of trust at meso and macro level. As result the marking system is less developed and less efficient in terms of creating space and time utility. In...

The oil shock of 1973-1974 was an economic and politic important event that produced controversies in the years that followed. No event in the last decades of the 20th century was as visible as the fourfold increase of the oil price in 1973-1974. Due to different opinions and the topic itself...

Oil price behavior has changed dramatically in the last twenty years. These changes can be explained rather simply in terms of the delayed responses of supply and demand to prices, and in terms of changes in the rate of discovery of reserves. This analysis can be used to forecast possible future...

In this paper, we use experimental data to study players' stability in normal-form games where subjects have to report beliefs and to choose actions. Subjects saw each of 12 games four times in a regular or isomorphic form spread over two days without feedback. We document a high degree of...

We use two theoretical categories of the work of Robert Nozick (1974), (a) protection agencies and (b) minimal state, to illustrate by analogy to the CMSP, the dilemmas arising from the use of private military in regions with civil wars and conflicts irregular. We see that the relations...

This paper investigates the conventional wisdom that markets would naturally allocate the rights for performing decisional task to those players who might be best suited to perform the task. We embedded the decisional tasks in a stylised setting of a game, motivated by Littlewood(1953) Red Hat...

In this paper I examine the paradoxical role of language in conflict situations. Support the war and negotiation belong to a game of "speech acts" structured by a double metonymic and metaphorical relationship. That metaphorical relationship between both conceptualizes negotiation as a condensed...

This paper implements an experimental test of a game-theoretic model of equilibrium profiling. Attackers choose a demographic “type” from which to recruit, and defenders choose which demographic types to search. Some types are more reliable than others in the sense of having a higher...

This paper concerns assimilation between physiques and economics. Assuming fixed time value of goods each year along with a new concept of empty goods and its interpretation on good’s exchange. We redefined the economy and briefly described the macroeconomic, the microeconomic and Islamic...

This paper exposes a formal model of the spiral of silence theory. It is based on game theoy. The game consists on three players: players 1 and two have two strategies, to speak (s) or not (~s); the third player is Nature, which decides whether players 1 and 2 agree in their opinion or not. If...