نتایج جستجو برای: join economic lot sizing imperfect quality

تعداد نتایج: 1107670  

Journal: :International Journal of Industrial Engineering Computations 2011

Journal: :European Journal of Operational Research 1991

Journal: :European Journal of Operational Research 2021

In this paper, we consider a lot-sizing problem with the remanufacturing option under parameter uncertainties imposed on demands and returns. Remanufacturing has recently been fast growing area of interest for many researchers due to increasing awareness reducing waste in production environments, particular studies involving simultaneously are very scarce literature. We first present min-max de...

Journal: :Discrete Applied Mathematics 1993
Stan P. M. van Hoesel Albert P. M. Wagelmans

In this paper we study sensitivity analysis of the uncapacitated single level economic lot-sizing problem, which was introduced by Wagner and Whitin about thirty years ago. In particular we are concerned with the computation of the maximal ranges in which the numerical problem parameters may vary individually, such that a solution already obtained remains optimal. Only recently it was discovere...

Journal: :Math. Program. 2006
Sergei Chubanov Mikhail Y. Kovalyov Erwin Pesch

We present a fully polynomial time approximation scheme (FPTAS) for a capacitated economic lot-sizing problem with a monotone cost structure. An FPTAS delivers a solution with a given relative error ε in time polynomial in the problem size and in 1/ε. Such a scheme was developed by van Hoesel and Wagelmans [8] for a capacitated economic lot-sizing problem with monotone concave (convex) producti...

2003
Stan Van Hoesel Albert Wagelmans Bram Moerman

In this paper we discuss two basic geometric techniques that can be used to speed up certain types of dynamic programs. We first present the algorithms in a general form, and then we show how these techniques can be applied to the economic lot-sizing problem and extensions. Furthermore, it is illustrated that the geometric techniques can be used to give elegant and insightful proofs of structur...

2017
Stan van Hoesel Albert Wagelmans Stan Van Hoesel

An important special case of the economic lot-sizing problem is the one in which there are no speculative motives to hold inventory, i. e., the marginal cost of ]n'oducing one unit m some period plus the cost of holding it until some future period is at least the marginal production cost in the latter period. It is already known that this special case can be solved in linear time. In this paper...

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