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作者：Meistering, Malte; Stadtler, Hartmut
作者单位：University of Hamburg
摘要：In practice, deterministic, multi-period lot-sizing models are implemented in rolling schedules since this allows the revision of decisions beyond the frozen horizon. Thus, rolling schedules are able to take realizations and updated forecasts of uncertain data (e.g., customer demands) into account. Furthermore, it is common to hold safety stocks to ensure given service levels (e.g., fill rate). As we will show, this approach, implemented in rolling schedules, often results in increased setup a...
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作者：Chintapalli, Prashant; Disney, Stephen M.; Tang, Christopher S.
作者单位：University of California System; University of California Los Angeles; Cardiff University
摘要：To avoid inventory risks, manufacturers often place rush orders with suppliers only after they receive firm orders from their customers (retailers). Rush orders are costly to both parties because the supplier incurs higher production costs. We consider a situation where the supplier's production cost is reduced if the manufacturer can place some of its order in advance. In addition to the rush order contract with a pre-established price, we examine whether the supplier should offer advance-ord...
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作者：Zhang, Kairen; Tang, Christopher S.; Zhou, Sean
作者单位：Chinese Academy of Sciences; University of Science & Technology of China, CAS; University of California System; University of California Los Angeles; Chinese University of Hong Kong
摘要：When formal distribution channels are absent in developing countries, micro-retailers travel a long distance to replenish their stocks directly from suppliers. This informal replenishment strategy is inefficient due to high imputed travel costs involved in the replenishment process. To improve efficiency, one hybrid replenishment strategy has emerged under which one of the micro-retailers in a neighborhood, while continuing its own retail business, also operates as a wholesaler to serve other ...
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作者：Surasvadi, Navaporn; Tang, Christopher S.; Vulcano, Gustavo
作者单位：National Science & Technology Development Agency - Thailand; National Electronics & Computer Technology Center (NECTEC); University of California System; University of California Los Angeles; Universidad Torcuato Di Tella; Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET)
摘要：We examine a contingent price markdown (CM) mechanism with guaranteed reservation under which a retailer sells multiple units to forward-looking consumers who arrive over time according to a Poisson process. During the early part of the selling season, each arriving consumer can either purchase a unit by paying the regular price or reserve a unit at the discount price. Reserved units can only be claimed later when the number of guaranteed reservations meets a pre-specified threshold, or at the...
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作者：Bradley, James R.
作者单位：William & Mary
摘要：We investigate the interrelationship of distribution center picking policies and supply chain inventory performance. In particular, we show how the picking sequence in the upstream supply chain link affects the inventory levels of items being replenished to a downstream link for a common ship-when-full trailer dispatching policy. Perturbing the picking sequence affects items' inventory levels asymmetrically which causes the aggregate system inventory to vary. We separate the items in replenish...
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作者：Yan, X.; Chao, X.; Lu, Y.; Zhou, S. X.
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作者：Bicer, Isik; Seifert, Ralf W.
作者单位：Erasmus University Rotterdam - Excl Erasmus MC; Erasmus University Rotterdam; Swiss Federal Institutes of Technology Domain; Ecole Polytechnique Federale de Lausanne; International Institute for Management Development (IMD)
摘要：We consider a manufacturer without any frozen periods in production schedules so that it can dynamically update the schedules as the demand forecast evolves over time until the realization of actual demand. The manufacturer has a fixed production capacity in each production period, which impacts the time to start production as well as the production schedules. We develop a dynamic optimization model to analyze the optimal production schedules under capacity constraint and demand-forecast updat...
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作者：Phadnis, Shardul S.; Fine, Charles H.
作者单位：Massachusetts Institute of Technology (MIT)
摘要：This study examines the tradeoffs in sourcing and sales strategies (i.e., upstream and downstream supply chain strategies) by considering them as components of an integral end-to-end supply chain strategy. We evaluate four end-to-end supply chain strategies under various scenarios using a newsvendor model, and compare the model's predictions against the prescriptions in Fisher's () framework, which recommends cost-efficient supply chains for functional products and responsive supply chains for...
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作者：Cheon, SangHyun; Lee, Chung-Yee; Wang, Yimin
作者单位：Hongik University; Hong Kong University of Science & Technology; Arizona State University; Arizona State University-Tempe
摘要：Container seaports play an important role in cross-border logistics as firms increasingly expand their global footprint in sourcing, manufacturing and distribution. Besides convenience of access to hinterland regions, a key metric for a port's attractiveness is its processing time, that is, its ability to clear goods within a consistent, predictable time frame. Due to differences in infrastructure, government regulations, and operating procedures, ports may exhibit different degrees of predict...
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作者：Sapra, Amar
作者单位：Indian Institute of Management (IIM System); Indian Institute of Management Bangalore
摘要：We consider a finite-horizon, periodic-review model for a serial system with two uncapacitated external suppliers. While one external supplier (regular supplier) ships to the most upstream stage, the other one (emergency supplier) ships directly to a downstream stage. For this system, with general lead-times we show that the optimal cost function is multimodular with respect to inventories in transit and inventories at different stages and obtain results that show how the optimal order quantit...
