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- John F. Affisco, M. Javad Paknejad, Farrokh Nasri
- European Journal of Operational Research
- 2002

- Farrokh Nasri, Javad Paknejad, John F. Affisco
- 2009

This paper considers the basic Economic Order Quantity model that allows stockouts and backordering. It assumes that the number of defectives produced by the manufacturing process is random rather than constant. Specifically, we assume that each lot contains a random proportion of defective units. Based on this scenario, we adjust the EOQ with planned… (More)

- M. Javad Paknejad, Farrokh Nasri, John F. Affisco
- JAMDS
- 2005

Typically, traditional inventory models operate under the assumption of perfect quality. In this paper we modify an inventory model with finite-range stochastic lead time to allow for a random number of defective units in a lot. However, there is an extra cost for holding the defective items in the lot for the period before it is returned to the supplier.… (More)

- Farrokh Nasri, M. Javad Paknejad, John F. Affisco
- JAMDS
- 2008

We study the impact of the efforts aimed at reducing the lead-time variability in a quality-adjusted stochastic inventory model. We assume that each lot contains a random number of defective units. More specifically, a logarithmic investment function is used that allows investment to be made to reduce lead-time variability. Explicit results for the optimal… (More)

- M. Javad Paknejad, Farrokh Nasri, John F. Affisco
- ZOR - Meth. & Mod. of OR
- 1991

- Javad Paknejad, Farrokh Nasri, John F. Affisco
- 2010

This paper extends the results developed by Nasri, Paknejad, and Affisco [7] to the case of basic Economic Order Quantity model with random defective units and two types of shortage. In addition to the general relationships for the optimal values of policy variables, the paper also provides closed form expressions when proportion of defective items in a lot… (More)

- M. Javad Paknejad, Farrokh Nasri, John F. Affisco
- Math. Meth. of OR
- 1996

Recently, a framework for analyzing investment decisions as they relate to setup cost reduction in two stage production processes has appeared in the literature. Closed form results were developed for the case of logarithmic investment function. This paper extends the results to the case of power investment function. We present an algorithm for calculating… (More)

- Farrokh Nasri, M. Javad Paknejad, John F. Affisco
- Computers & Industrial Engineering
- 2012

- Farrokh Nasri, Frank G. Zarb, Javad Paknejad, John F. Affisco
- 2011

This paper extends the results of a series of recent papers which focused on the analytical investigation of the economic trade-offs associated with investment decisions aimed at changing the parameters of yield distribution, and thereby improving process quality, in an EOQ model with planned shortages and random production yield. Production yield is… (More)

- Farrokh Nasri, Frank G. Zarb, Javad Paknejad, John F. Affisco
- 2015

A recent paper developed the analytical framework for a perishable EMQ model with nonlinear holding cost while setup cost was assumed to be constant. This paper extends the previous work for the case of a perishable EMQ model with no backordering, perfect quality of replenishment items, and nonlinear holding cost by considering setup cost to also be a… (More)