Alternative market structures are distinguishable by the degree of parallel action exhibited by producers. We show that the correlation between output levels varies systematically with the degree of interdependence among firms, and establish an ordering among alternative behavioral hypotheses (Cournot, Stackelberg, Edgeworth/Bertrand, collusion, and perfect competition). Because the ordering is...

Production leveling (heijunka) is one of the lean tool that is used to stabilize a manufacturing system (reduce the bullwhip effect). Production leveling is a kind of cyclic scheduling that creates production regularity and coordination simplicity. This article describes simulation modeling and multivariate analysis of an assembly production line in a microelectronics factory. The assembly line...

Manuscript describes producing keratin hydrolysate from sheep wool through two-stage technology whose principle consists in first having wool processed in an alkaline environment during the first stage, and then effecting hydrolysis in the second stage through the action of proteolytic enzyme. Experiments were planned in accordance with factor schemes of 23 types in which factors under study we...

in this paper, the random walk hypothesis and the opec oil market efficiency have been examined. the random walk hypothesis states that prices are completely stochastic in nature so that they have 'no memory'. in its weak-form, changes in prices occur stochastically and, as a result, the random walk behavior of prices is usually used to test the weak-form efficiency. in order to study the rando...

Since oil plays an important role in the economy of Azerbaijan, events global market deeply affect national economy. Moreover, COVID-19 pandemic influenced which and gas have a significant place. In April 2020, price one barrel on world fell to $1. One reason for this was decrease demand due lockdown re-gime implemented by many countries rapid outbreak pandemic, another that OPEC (Organization ...