In computational markets utilizing algorithms that establish a general equilibrium, competitive behavior is usually assumed: each agent makes its demand (supply) decisions so as to maximize its utility (profit) assuming that it has no impact on market prices. However, there is a potential gain from strategic behavior via speculating about others because an agent does affect the market prices, w...

We address the exact resolution of a MINLP model where resources can be activated in order to satisfy a demand (a partitioning constraint) while minimizing total cost. Cost functions are convex latency functions plus a fixed activation cost. A branch and bound algorithm is devised, featuring three important characteristics. First, the lower bound (therefore each subproblem) can be computed in O...

We demonstrate that in a CAPM economy Walras Law and the Tobin Separation Property characterize market demand on nite sets of prices. Consequently, for any number n there exist CAPM economies which have at least n equilibria and hence have n di erent beta pricing formulas. It is shown that the lower bound on the number of equilibria, n, is robust to pertubations of endowments.

Characterization and evaluation of a biological submerged filter was carried out on a full-scale pilot plant performing removal of biochemical oxygen demand (BOD) and total nitrogen (TN) from pre-treated urban wastewater. The average influent values of BOD5, chemical oxygen demand (COD) and TN were 370, 1,015 and 60 mg/L, respectively. The pilot plant produced good discharge quality during stea...

In contrast to single-product pricing models, multi-product pricing models have been much less studied because of the complexity of multi-product demand functions. It is highly nontrivial to construct a multi-product demand function on the entire set of nonnegative prices, not to mention approximating the real market demands to a desirable accuracy. Thus, many decision-makers use incomplete dem...