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pro vyhledávání: '"Walid W. Nasr"'
Autor:
Walid W. Nasr
Publikováno v:
Annals of Operations Research. 309:163-187
Modeling the behavior of customer demand is a key challenge in inventory control, where an accurate characterization of the demand process often involves accounting for a wide range of statistical descriptors. This motivates the use of Markovian proc
Autor:
Mohamad Y. Jaber, Walid W. Nasr
Publikováno v:
International Journal of Production Economics. 216:349-363
Companies have to account for continuously evolving technologies that are driven by the consumer's appetite for new and innovative products, requiring them to modify their production systems to become flexible, where items do not have standard featur
Autor:
Walid W. Nasr, Mohamad Y. Jaber
Publikováno v:
Computers & Industrial Engineering. 131:477-487
We consider learning and forgetting in the context of two-server queueing systems and evaluate the tradeoff between utilizing specialized and flexible servers. Specifically, we investigate the performance of two queueing systems. The first system uti
Autor:
Ibrahim J. Elshar, Walid W. Nasr
Publikováno v:
European Journal of Operational Research. 270:198-217
Non-stationary demand is common in many industrial settings and accounting for the non-stationarity in the demand process significantly complicates the analysis of inventory policies. This work presents an efficient computational framework, which uti
Publikováno v:
Stochastic Models. 34:292-321
We identify key characteristics of a correlated point process which include moments of the time between arrivals as well as measures of variability and correlation obtained from the counting process over different time intervals. A computational fram
Publikováno v:
Omega. 105:102514
Investing in recoverable items is an increasing trend in a variety of manufacturing industries. Such industries seek to balance their supply chain costs while reducing solid waste (non-biodegradable). Our work develops mathematical models of inventor
Publikováno v:
European Journal of Operational Research. 262:602-619
We consider the problem of allocating processing times in a multi-station series system characterized by high variability. Servers are arranged into multiple stations in series with the objective of minimizing the waiting time through a truncation sc
Publikováno v:
International Journal of Production Research. 55:4544-4556
This paper considers an economic production quantity with imperfect items where the quality of items produced within the same production run is correlated. Production and scheduled maintenance policies for a correlated binomial production system are
Publikováno v:
Applied Mathematical Modelling. 40:3242-3256
Most production systems produce items which are of imperfect quality. Handling of the defective items varies by industry and product types. For example, defective items may be sold at discount in the apparel industry, or reworked in the automobile in
Autor:
Walid W. Nasr, Bacel Maddah
Publikováno v:
European Journal of Operational Research. 246:874-885
This work considers a continuous inventory replenishment system where demand is stochastic and dependent on the state of the environment. A Markov Modulated Poisson Process (MMPP) is utilized to model the demand process where the corresponding embedd