In this paper, the minimization of the maximum aggregate inventory of all products for the common cycle time approach to the scheduling problem of a multi-products single machine system is considered. In the case of non-zero set up time and limited resources, a simply and easy to apply rule has been obtained for this optimization problem. Using this rule, one can obtain the optimal production s...

We consider a general problem of finding a strategy that minimizes the exponential moment of a given cost function, with an emphasis on its relation to the more common criterion of minimization the expectation of the first moment of the same cost function. In particular, our main result is a theorem that gives simple sufficient conditions for a strategy to be optimum in the exponential moment s...

We show by construction that the procedure of local search for the problem of finding a local optimum of a quadratic pseudo-boolean function takes exponential time in the worst case, regardless of the neighbor selection and tie-breaking rules.

Code generators based on bottom-up rewrite systems (BURS) are automatically generated from machinedescription grammars. They produce locally optimal code for expression trees, but their tables are large and require compile-time interpretation. This paper describes a program that compiles BURS tables into a combination of hard code and data. Hard-coding exposed important opportunities for compre...

today the industrial wastes are one of the main problems in the developing countries. discharging the industrial wastewater into environment is harmful for human health and other living creatures.thus decreasing of the pollution load of waste waters is an important environmental issue.adsorption of chemical oxygen demand by biomass wastes can be a proper and low cost method for cod removal from...

objective: in sever oligospermia; one of the paths used for surgical sperm retrieval (ssr) is to extract sperm via a testicular biopsy. the aim of our study is to determine the reliable time interval between testicular biopsy and intracytoplasmic sperm injection (icsi) procedure in order to obtain optimumsperm parameters (count, motility and normal morphology). materials and methods: this cohor...

This paper uses a modified Ant Colony Optimization (ACO) algorithm to price simple financial derivatives. We use ants to find the optimum time to exercise an option. Our algorithm searches the solution space to find optimum solution under some user defined constraints. In this preliminary study we show that the modified ACO works in predicting an optimum exercise time of a simple vanilla option.