the objective of this study was to determine the optimum replacement strategy using dynamic programming for dairy herds in fars province. a dairy cow is kept several lactations for milk production in the herd. after spending several lactations, milk production gradually begins to decline, while animal health problems rises simultaneously. so one of the most important management decisions of dai...

We investigate the portfolio execution problem under a framework in which volatility and liquidity are both uncertain. In our model, we assume that multidimensional Markovian stochastic factor drives of them. Moreover, model indirect costs as temporary price impact, stipulating power law to relate it agent's turnover rate. first analyse regularized setting, admissible strategies do not ensure c...

Value at Risk (VaR) has emerged in recent years as a standard tool to measure and control the risk of trading portfolios. Yet, existing theoretical analyses of the optimal behavior of a trader subject to VaR limits have produced a negative view of VaR as a risk-control tool. In particular, VaR limits have been found to induce increased risk exposure in some states and an increased probability o...

This paper represents a complete survey on Generation Companies’ (GenCos’) optimal bidding strategy problem in restructured power markets. In this regard after an introduction to competitive electricity markets, concept of optimal bidding strategy is presented. Considering large amount of works accomplished in this area a novel classification is implemented in order to categorize the existing d...

A previous CIFEr paper demonstrated that a genetic algorithm could be used to automatically discover new optimal auction mechanisms for automated electronic marketplaces populated by software-agent traders. Significantly, the new auction mechanisms are often unlike traditional mechanisms designed by humans for human traders; rather, they are peculiar hybrid mixtures of established styles of mec...

This article analyzes the behavior of a Brownian fluctuation process under mixed strategic game setup. A variant compound motion has been newly proposed, which is called Shifted Fluctuation Process to predict turning points stochastic process. evolves until it reaches one step prior point. The Game constructed based on this new find optimal moment actions. Analytically tractable results are obt...

A Hodge structure V of weight k on which a CM eld acts de nes, under certain conditions, a Hodge structure of weight k 1, its half twist. In this paper we consider hypersurfaces in projective space with a cyclic automorphism which de nes an action of a cyclotomic eld on a Hodge substructure in the cohomology. We determine when the half twist exists and relate it to the geometry and moduli of th...