scholarly journals PERIODIC REVIEW SYSTEM FOR INVENTORY REPLENISHMENT CONTROL FOR A TWO-ECHELON LOGISTICS NETWORK UNDER DEMAND UNCERTAINTY: A TWO-STAGE STOCHASTIC PROGRAMING APPROACH

2017 ◽  
Vol 37 (2) ◽  
pp. 247-276
Author(s):  
P.S.A. Cunha ◽  
F. Oliveira ◽  
Fernanda M.P. Raupp
Keyword(s):  
Demand Uncertainty ◽  
Periodic Review ◽  
Review System ◽  
Two Stage ◽  
Logistics Network ◽  
Inventory Replenishment

scholarly journals Combined Sales Effort and Inventory Control under Demand Uncertainty

2013 ◽  
Vol 2013 ◽  
pp. 1-8
Author(s):  
Weili Xue ◽  
Xiaolin Xu ◽  
Ruxian Wang
Keyword(s):  
Inventory Control ◽  
Demand Uncertainty ◽  
Periodic Review ◽  
Review System ◽  
Setup Cost ◽  
Single Item ◽  
Effort Level ◽  
Numerical Studies ◽  
Optimal Policies ◽  
Batch Ordering

We study the joint inventory and sales effort management problems of a retailer in a broad context and investigate the optimal policies for a single item, periodic-review system. In each period, the demand is uncertain depending on the sales effort level exerted by the retailer, which incurs an associated cost. The retailer’s objective is to find a joint optimal inventory replenishment and sales effort policy to maximize the discounted profit over a finite horizon. We first consider a basic setting with zero setup cost and no batch ordering, under which the base stock list sales effort policy is optimal. Two extensions are then investigated: (1) the case with nonzero setup cost, under which we show that(s,S,e)policy is optimal; and (2) the case with batch ordering, under which we prove the optimality of the(r,Nq,e)policy. Finally, we conduct numerical studies to provide additional managerial insights.

Managing Inventories: The Periodic Review System

2006 ◽  
Author(s):  
James R. Freeland ◽  
Robert Landel ◽  
Elliott N. Weiss
Keyword(s):  
Periodic Review ◽  
Review System

scholarly journals Model and Algorithm of Two-Stage Distribution Location Routing with Hard Time Window for City Cold-Chain Logistics

2020 ◽  
Vol 10 (7) ◽  
pp. 2564
Author(s):  
Liying Yan ◽  
Manel Grifoll ◽  
Pengjun Zheng
Keyword(s):  
Time Window ◽  
Hybrid Genetic Algorithm ◽  
Distribution Networks ◽  
Cold Chain ◽  
Two Stage ◽  
Logistics Network ◽  
Stage Distribution ◽  
Hard Time ◽  
Location Routing ◽  
Logistics Enterprises

Taking cold-chain logistics as the research background and combining with the overall optimisation of logistics distribution networks, we develop two-stage distribution location-routing model with the minimum total cost as the objective function and varying vehicle capacity in different delivery stages. A hybrid genetic algorithm is designed based on coupling and collaboration of the two-stage routing and transfer stations. The validity and feasibility of the model and algorithm are verified by conducting a randomly generated test. The optimal solutions for different objective functions of two-stage distribution location-routing are compared and analysed. Results turn out that for different distribution objectives, different distribution schemes should be employed. Finally, we compare the two-stage distribution location-routing to single-stage vehicle routing problems. It is found that a two-stage distribution location-routing system is feasible and effective for the cold-chain logistics network, and can decrease distribution cost for cold-chain logistics enterprises.

scholarly journals Evaluasi Persediaan Bahan Baku Dengan Menggunakan Pendekatan Metode Continuous Review System Dan Periodic Review System

OPSI ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 120
Author(s):  
Annisa Indah Pratiwi ◽  
Amelia Nur Fariza ◽  
Ramdani Awaludin Yusup
Keyword(s):  
Periodic Review ◽  
Review System ◽  
Continuous Review

Service capacity coordination in IT services supply chain

2018 ◽  
Vol 13 (4) ◽  
pp. 952-972 ◽  
Author(s):  
Sanjay Kumar Prasad ◽  
Ravi Shankar
Keyword(s):  
Supply Chain ◽  
Demand Uncertainty ◽  
Degree Of Substitution ◽  
Future Research ◽  
It Services ◽  
Two Stage ◽  
Content Type ◽  
Optimal Capacity ◽  
Automated Software ◽  
Capacity Cost

Purpose The purpose of this paper is to investigate capacity coordination in services supply chain (SSC). It provides discussion and application of various contracts in a two-stage single period SSC. Design/methodology/approach This paper considers a two-stage serial supply chain with demand uncertainty and price insensitivity. A model is developed to represent a global IT SSC incorporating services specific factors like over-capacity cost and higher degree of substitution resulting in flexibility to meet unplanned demand. At first, centralized and competitive solutions of the model are studied. Then, the paper studies coordination in this supply chain using some of widely used contract templates. Findings This paper finds several key insights for the researchers and practitioners in this area around adverse impact of over-capacity cost on demand, positive effect of delivery team’s exposure to market on contracting terms and better understanding of efficient frontiers for selected contracting mechanism. Research limitations/implications This paper has limited its analysis to three key and most widely used contracts and made assumptions about risk-neutrality of the firms. Future research can study other contracting templates and/or relax for the model as laid out in this paper. Practical implications An automated software agent can be built leveraging the closed form equations developed here to help decide on optimal capacity investment and devise coordinating contracts. Originality/value This paper established that because of higher degree of substitution, perishability and non-trivial over-capacity cost, SSC behave bit differently than the physical goods supply chain and coordination of participating firms needs to be studied in a services specific context for improving system-wide performance.

Group replacement of a multicomponent system which is subject to deterioration only

1978 ◽  
Vol 10 (04) ◽  
pp. 867-885
Author(s):  
B. D. Sivazlian ◽  
J. F. Mahoney
Keyword(s):  
Operating Cost ◽  
Multicomponent System ◽  
Variational Calculus ◽  
The State ◽  
Cost Structure ◽  
Fixed Cost ◽  
Periodic Review ◽  
Review System ◽  
Increasing Function

The stationary characteristics of an n-component periodic review system which is subject to stochastic deterioration (but not to failure) are investigated. When the n-component vector which expresses the state of deterioration of the system pierces a certain surface the entire multicomponent system is replaced by items of identical cost structure at the time of the next review. In the absence of this situation nothing is replaced. It is assumed that there is a fixed cost associated with each replacement and that the operating cost of each item is a strictly increasing function of its state of deterioration. The conditions for minimizing the long-term cost of maintaining a system which operates under the stated policy were found through solution of a problem in variational calculus. Two examples are worked. A useful graph which aids in the solution of such problems is provided.

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