Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"intermittent demand"”.
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Modelling and prediction of intermittent demand distributions
… concern for mostindustrial firms. However, the demand for spare parts is typically intermittent in naturemeaning that orders arrive sporadically and the order sizes may be highly variable. Anumber of authors have suggested that compound distributions could be used to modelintermittent demand …
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FORECASTING INTERMITTENT DEMAND FOR AIRCRAFT SPARE PARTS USING MACHINE LEARNING
Intermittent demand poses a complex challenge for military aviation logistics due to long periods of zero consumption, followed by sudden peaks of demand, which makes traditional forecasting methods unreliable. This thesis develops and evaluates machine-learning approaches for forecasting …
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Intermittent demand forecasting for inventory control : the impact of temporal and cross-sectional aggregation
Managing intermittent demand is a challenging operation in many industries since this type of demand is difficult to forecast. This challenge makes it hard to estimate inventory levels and thus affects service levels. The purpose of this study is to examine the impact of multiple levels of data …
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Determining Optimal Supply Level for Intermittent and Low Demand Parts
… what optimal level of supply looks like for intermittent and low demand parts. For these parts, it is difficult to forecast the needed demand and set the right amount of inventory level. A number of these parts are Made-as-Order (MAO) with long lead times, therefore when a part is needed, …
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A systematic approach to internal spare parts management
… group of thousands of items. Spare parts exhibit intermittent demand and a variety of prices, lead times, and potential downtime costs that pose challenges for planning and control. Managers can facilitate spare parts decision-making through the utilization of classification methods to prioritize …
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Differentiating the hospital supply chain for enhanced performance
… product based on that product's unit cost, demand, variability, physical size, and criticality. The research analyzes demand data from two hospitals and demonstrates that hospital demand can be modeled using a variation of Croston's method for intermittent demand. This fact was used to …
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Inventory Models for Intermittent Highly Variable Demand and Policy Parameter Adjustments to Meet Desired Service Level Requirements
… first assay examines the robustness of lead time demand models for the continuous review (r;Q) inventory policy. A number of classic distributions as well as distribution selection rules are examined under a wide variety of demand conditions. First, the models are compared to each other by …
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Reliable Prediction Intervals and Bayesian Estimation for Demand Rates of Slow-Moving Inventory
Application of multisource feedback (MSF) increased dramatically and became widespread globally in the past two decades, but there was little conceptual work regarding self-other agreement and few empirical studies investigated self-other agreement in other cultural settings. This study developed a …
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Four Essays on Inventory and Supply Chain Management
… creating data driven models for censored demand (i.e., sales). In particular, we focus on a single-period single-item distributionally robust Newsvendor context, where only observations of sales (censored demand) data are available. We first calculate confidence intervals for the first ℓ = …