Group scheduling is significant for efficient and cost effective production system. However, there exist setup times between the groups, which require to decrease it by sequencing groups in an efficient way. Current research is focused on a sequence dependent group scheduling problem with an aim to minimize the makespan in addition to minimize the total weighted tardiness simultaneously. In mos...

Portfolio optimization involves the optimal assignment of limited capital to different available financial assets to achieve a reasonable trade-off between profit and risk objectives. In this paper, we studied the extended Markowitz’s meanvariance portfolio optimization model. We considered the cardinality, quantity, pre-assignment and round lot constraints in the extended model. These four rea...

Surgical theater is one of the most expensive hospital sources that a high percentage of hospital admissions are related to it. Therefore, efficient planning and scheduling of the operating rooms (ORs) is necessary to improve the efficiency of any healthcare system. Therefore, in this paper, the weekly OR planning and scheduling problem is addressed to minimize the waiting time of elective pati...

We study the problem of allocating indivisible goods fairly and efficiently among a set of agents who have additive valuations for the goods. Here, an allocation is said to be fair if it is envy-free up to one good (EF1), which means that each agent prefers its own bundle over the bundle of any other agent, up to the removal of one good. In addition, an allocation is deemed to be efficient if i...

This paper analyzes the role of production distortion for income redistribution in an international trade model. In particular, this paper examines the role of the Stolper and Samuelson effect (Stolper and Samuelson 1941) on efficient income redistribution. It first shows that production inefficiency can be a part of a Pareto-efficient tax system when there is an asymmetric information problem ...

We study the problem of rationing a divisible good among a group of people. Each person’s preferences are characterized by an ideal amount that he would prefer to receive and a minimum quantity that he will accept: he finds any amount less than this threshold to be just as good as receiving nothing at all. Further, any amount beyond his ideal quantity has no effect on his welfare. The focus of ...

In this paper an approach in data envelopment analysis dealing with evaluation of non – zero slacks was propounded. This approach intends that weight of inefficient and weak efficient points that have been evaluated as zero weight, be considered as positive weight, and also in this approach, the pareto efficiency evaluates the picture of this point. In this approach positive weights in the i...

For a set T of n points in a metric space (X, d), a point y ∈ X is dominated by a point x ∈ X if d(x, t) ≤ d(y, t) for all t ∈ T and there exists t ∈ T such that d(x, t) < d(y, t). The set of nondominated points of X is called the Pareto envelope of T. H. Kuhn (1973) established that in Euclidean spaces, the Pareto envelopes and the convex hulls coincide. Chalmet et al. (1981) characterized the...

IN THIS PAPER WE SEARCH for solutions to various classes of allocation problems. We Ž require them to be Pareto efficient and indi idually rational in the sense that no agent is . ever worse off than he would be on his own . In addition to these minimal requirements we also would like agents not to be able to profitably misrepresent their preferences. This property is known as strategy-proofnes...

the theory of efficient breach states that it is socially useful to breach a contract whenever the breach would leave no party worse off, while leaving at least one party better off. in other words, economic analyses of breach are mainly concerned with situations in which breach is pareto-superior, rather than just overall profit-maximizing. in contrast with moral theories that hold that breach...