Art 11
Art 11
DOI 10.1186/s40852-017-0054-3
* Correspondence: sjjeong@kw.ac.kr
Business School, Kwangwoon              Abstract
University, 26 Kwangwoon-gil
(447-1, Wolgye-dong), Nowon-Gu,         A reverse supply chain, as a post-consumption activity, aims at extracting value from
Seoul 139-701, Korea                    products at end of their life cycle (Mafakher and Nasiri, Journal of Cleaner Production 59:
                                        185–196, 2013). As well, company’s awareness is attracting increasing attention toward
                                        sustainable business practices. Open-innovation is a typical example of coordinative
                                        activity that a manufacturer should share a profits generated through reverse supply
                                        chain with retailer. The aim of this paper provide insights toward open innovation
                                        practice in sharing profits between two strategic partners, manufacturer and retailer to
                                        maximize an individual profits as well as total profits concurrently in reverse supply chain.
                                        For analyzing effects of open innovation strategies, we modeled reverse supply chain
                                        environments using system dynamics approach and compared the gap of profits
                                        between non-coordinative (decentralized) and coordinative activity. Three cooperative
                                        contracts in terms of how to share the cost and profit between two parties are proposed
                                        in this paper. Each contract was analyzed according to the following three contract
                                        processes. The first stage is that manufacturer proposes contracts to retailer. The second
                                        is that retailer evaluates proposed contracts and choices the best contract which can lead
                                        to maximize its expected profit. Finally retailer and manufacturer adjust parameters of the
                                        best contract for achieving mutual goal of supply chain. Through the experimental
                                        results, we discuss best coordinative strategy between manufacturer and retailer in order
                                        to maximize a profit in reverse SC.
                                        Keywords: Reverse supply chain, Open innovation system dynamics, Contract
                                        implementation procedure
Main text
                                         · This paper reviews contract options available with manufacturer and retailer to
                                         collect a higher return rate of used products from consumer
                                         · We generated detailed procedures of contract implementation with three stages:
                                         Proposition, Evaluation and Adjustment
                                         · Manufacturer proposes contracts to retailer as follow: ‘Revenue sharing’, ‘Collect
                                         payment support’ and ‘Transportation cost support’.
                                     © The Author(s). 2017 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International
                                     License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium,
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Yoon and Jeong Journal of Open Innovation: Technology, Market, and Complexity (2017) 3:2                       Page 2 of 13
                   · Retailer evaluates proposed contracts and selects the best contract which can
                   maximize its own profit.
                   · Manufacturer and retailer adjust parameters of the best contract for maximizing total
                   profit of supply chain
                 Introduction
                 Recently, as increasing the needs for activity to return used products from consumer
                 due to the environmental regulation, Firms’ interests and necessary for open innovation
                 of reverse supply chain have slightly been growth.
                    Reverse supply chain focuses on collecting products from customers and reusing them to
                 generate value. Open-innovation is a type of coordinative straggles that manufacturer
                 should share the profits generated through reverse supply chain with retailers. (Čirjevskis
                 2016; Leydesdorff and lvanova 2016; Yusr 2016). The value that reverse supply chains bring
                 is threefold: First, the manufacturer uses the returned products in a remanufacturing
                 process. Second, customer participation in the product return enables open innovation
                 among partners in the supply chain to have a chance to sell new products to participating
                 customers. Third, for auxiliary and consumable products dependent on another device, such
                 as printer ink on printers, the manufacturer can encourage customers to buy new products
                 rather than refurbish or refill used ones when the reverse supply chain is employed.
                    Because collecting used products to remanufacture for resale is increasingly important
                 for corporate profits, many companies explicitly cooperate in the concept of open
                 innovation with their customers. A participant in supply chain have tried to generate
                 firm’s value by cooperation with other participants within the same chain. Manufacturers
                 in particular are considering various cooperative strategies such as working with supply
                 chain partners, including retailers and third party logistics (3PL) companies, to increase
                 their used product collection rate (Savaskan et al. 2004).
                    Generally, various cooperation strategies with partners was done by various contrac-
                 tion methods such as benefit-sharing, sharing of burden of expense (Mafakheri and
                 Nasiri 2013; Govindan and Popiuc 2014; Li et al. 2014; Shi et al. 2016).
                    This paper reviews a few contract options available with manufacturer and retailer to
                 collect a higher return rate of used products from consumer in reverse supply chain.
                 When comparing of decentralized model (No sharing of benefit or cost with supply
                 chain partners), the effects of coordinative options will be tested in perspective of
                 individual by participant or total supply chain profits through simulation approach.
                    This paper focuses on understanding the detailed implementation procedure in deter-
                 mining the optimal contracts through the agreement between two partners, manufacturer
                 and retailer.
                 Literature review
                 Numerous contract forms have been studied, such as buy-back, quantity-flexibility,
                 revenue-sharing, price-discount, sales-rebate, and quantity-discount (wang 2002; Li et
                 al. 2009; Cachon and Lariviere 2005; Coltman et al. 2009; Seifbarghy et al. 2015). Most
                 of them focused on general supply chain model with a two-stage supplier and retailer.
                 However, a few that deal with the effects on contracts with participants in reverse sup-
                 ply chain model have been studied, to our knowledge. Thus, our literature review ex-
                 tended reverse supply as well as general supply chain in order to recognize the types of
Yoon and Jeong Journal of Open Innovation: Technology, Market, and Complexity (2017) 3:2                           Page 3 of 13
                 contracts model and their distinct implementation. Gerchak and Wang (2004) reviewed
                 two difference types of contracts between retailer and suppliers. One scheme was a
                 vender management inventory with revenue sharing, and the other was wholesale-price
                 driven contracts. They explored the resulting components’ delivery quantities equilib-
                 rium in this decentralized supply chain and its implications for participants’ and total
                 expected profits. Through experiment, they indicated revenue sharing should be a best
                 option to supplier to maximize its own profits. Cachon and Lariviere (2005) studied the
                 revenue-sharing contracts in a traditional supply chain model with revenues deter-
                 mined by each retailer’s purchase quantity and price. Their recommend was that rev-
                 enue sharing coordinates a supply chain with a single retailer (i.e., the retailer chooses
                 optimal price and quantity) and arbitrarily allocated the supply chain’s profit. Through
                 comparing among alternative revenue sharing options that include a buy-back con-
                 tracts, price-discount contracts, quantity-flexibility contracts, sales-rebate contracts,
                 franchise contracts, and quantity discounts, they demonstrated revenue sharing is
                 equivalent to buybacks in the newsvendor case and equivalent to price discounts in the
                 price-setting newsvendor case.
                   Wang and Zipkin (2009) investigated how the behavior of participant’s decision making
                 affects the performance of supply chain under a two-stage supplier-retailer model. Under
                 buy back, they experimented for finding the particular viewpoints in both of when retailer is
                 as leader and supplier as leader. The results showed the case that supplier is as leader can be
                 dominated than the other in maximizing total system profits under same experimental con-
                 ditions. Kanda and Deshmukh (2009) presented an evaluation of wholesale price, buy back,
                 and quantity flexibility in relation to the decentralized case and in terms of performance
                 measures improvement under three-level supply chains with a single supplier, assembler,
                 and retailer. Kannan et al. (2012) investigated a series on contracts applied on the two
                 echelon supply chain and indicates that revenue-sharing contracts offer the highest profit
                 margins for the manufacturer.
                 Research model
                 Model procedure
                 As shown in Fig. 1, our research model greatly follows four steps.
                   1. Proposition
                       Step 1.1 for applying open innovation, manufacturer determines
                       coordinative contracts
                         In step 1.1, we design three open innovation-based coordinative strategies with
                         manufacturer and retailer; 1) revenue-sharing of manufacturer to retailer, 2)
                         manufacturer’s financial support for the collect payment to retailer (manufacturer’s
                         additional payment to retailer in order to accelerate return activity of retailer,
                         separately with base return fee), and 3) manufacturer’s support to transportation
                         cost paid by retailer.
                       Step 1.2 Manufacturer estimates its own expected profit, without open
                       innovation strategies above.
                         The experiment to estimate the individual profits of each of manufacturer and
                         collection performance for gaining the effects from excluding open-innovation.
Yoon and Jeong Journal of Open Innovation: Technology, Market, and Complexity (2017) 3:2                          Page 4 of 13
                   Fig. 3 Profit structure of manufacturer and collecting firm under the decentralized
Yoon and Jeong Journal of Open Innovation: Technology, Market, and Complexity (2017) 3:2                                    Page 6 of 13
                            Step 4. Both of two partners agree to change some of recycling fee offered
                            by implementing the open-innovation
                              After final decision of retailer, the detailed of best contract will be
                              proceeded with two partners. In cooperative supply chain, it is more
                              important to maximize total profits than an individual profit of each. Thus,
                              if retailer’s decision does not satisfy the maximization of total profits, we
                              assume that parameters of contract will be partially adjusted by the process
                              of agreement between partners. In this study, we consider the basic return
                              fee as adjustment parameter. From the initial basic return fee, we
                              experiment the change of total profits by smooth decrement of the value of
                              base return fee. We finally select the adjusted best return fee that maximize
                              the total profits and the corresponding maximum allowance level.
                 Table 2 Profit estimation under the decentralized reverse supply chain in step 1
                 Decentralized Reverse Supply Chain
                 Retailer’s profit ($)         Manufacturer’s profit ($)        Total profit ($)    Return rate (Unit)
                 68,393                        1,126,350                        1,194,743           168,800
Yoon and Jeong Journal of Open Innovation: Technology, Market, and Complexity (2017) 3:2                                               Page 9 of 13
                 cost. Her revenue is the recycling fee paid by manufacturer. The manufacturer’s burden
                 includes inventory costs, remanufacturing process costs, and recycling fee paid to the
                 retailer. He creates revenue through sales for remanufactured and new cartridges.
                   Manufacturer would try to collect more used cartridges because remanufactured
                 product can reduce manufacturing cost of raw material. Therefore, Manufacturer
                 would propose contracts which are related to the financial support to retailer for
                 increasing the profit.
                 Simulation model
                 System dynamics model is used for analyzing coordination strategies in reverse supply
                 chain as shown in Fig. 4. Table 1 shows used data of manufacturer and retailer in simu-
                 lation model.
                   Customer’s return attractiveness1) as key important factor is based on the refilling
                 price, the new cartridge price and the retailer’s collect payment. We assumed that the
                 refilling price and the new cartridge price are fixed as a market price but, retailer’s
                 collect payment fluctuate.
                   Retailer’s collect payment is determined as shown in Fig. 5. If retailer’s unit profit is less
                 than zero, retailer does not offer collect payment to customer. Otherwise, the maximum
                 collect payment that retailer can offer to the customer, is calculated by new cartridge price
                 minus refilling price. Therefore, if retailer’s unit profit is less than maximum collect
                 payment, she offers certain of her revenue to customer.
                   Therefore, customer return attractiveness would be 100% if retailer offers maximum
                 collect payment to them. Otherwise, it will be the proportion that retailer’s incentive is
                 divided into maximum incentive.
                 Table 7 Optimal sharing rate of coordination strategies based on collecting firm profit
                 Coordinative Reverse Supply Chain
                 Strategies                 Optimal   Collecting Firm    Manufacturer        Total Supply Chain      Return Rate
                                            Rate      Profit ($)         Profit ($)          Profit ($)              (Unit)
                 Incentive Sharing Rate     30%       136,435            1,136,090           1,272,525               209,600
                 Revenue Sharing Rate       15%       137,348            1,145,250           1,282,598               227,300
                 Transportation cost        100%      77,868             1,198,200           1,276,068               180,300
                 sharing rate
                 Table 8 The partial adjustment of 15% revenue sharing under the agreement of two participants
                 Manufacturer’s Revenue Sharing Rate (15%)
                 Adjustment       Collecting Firm Profit   Manufacturer Profit   Total Supply Chain Profit        Return Rate
                 rate             ($)                      ($)                   ($)                              (Unit)
                 0%               137,348                  1,145,250             1,282,598                        227,300
                 1%               133,089                  1,149,040             1,282,129                        226,300
                 2%               127,598                  1,147,420             1,275,018                        224,900
                 3%               128,412                  1,151,010             1,279,422                        223,400
                 4%               126,618                  1,149,110             1,275,728                        221,700
                 5%               126,593                  1,152,500             1,279,093                        220,300
                 6%               123,124                  1,150,320             1,273,444                        218,800
                 7%               124,031                  1,153,510             1,277,541                        217,300
                 8%               121,596                  1,160,350             1,281,946                        215,800
                 9%               120,791                  1,154,040             1,274,831                        214,300
                 10%              118,958                  1,160,600             1,279,558                        212,800
Yoon and Jeong Journal of Open Innovation: Technology, Market, and Complexity (2017) 3:2                                             Page 12 of 13
                   In step 3, retailer will select the best that is highest of its own profits among above three
                 contracts and its allowance maximum level proposed by manufacturer (see Table 7). From
                 the results of experiment of step 3, the best contract was found that manufacturer share
                 15% of his revenue to retailer. In this case, the individual profits of manufacturer and re-
                 tailer was $ 1,145, 250 and $ 137, 348, respectively and return rate also was 227,300.
                   Table 8 figures out the results of step 4 procedure. In step 4, it is explained that the
                 partial adjustment of 15% revenue sharing under the agreement of two participants. As
                 mentioned in explanation of research model, we considered base return fee as adjusting
                 factor. As doing the smooth decrement of best return fee paid by manufacturer to
                 collection, we captured the change of the total profit (manufacturer profits, plus retailer
                 profit). From the results of experiment, we finally demonstrate that the point of maxi-
                 mizing total profits was to retain the existing value of base return fee.
                 Conclusions
                 In this paper, we propose the detailed open-innovation strategic decision procedure be-
                 tween manufacturer and retailer. For that, we first reviewed three open-innovation
                 strategies; (1) manufacturer’s revenue sharing, (2) manufacturer’s incentive support that
                 retailer pay to customer, (3) manufacturer’s support of transportation cost paid by
                 retailer.
                   We first tested whether open-innovation activity has a positive performance effects
                 that decentralized environment by comparing the gap of profits in two case. From the
                 results, to contract between two partners is superior to none between those. Also, in
                 process of contracting between two partners, we finally found the best contract and its
                 allowance maximum level. Above three contact methods, we demonstrate the best is
                 revenue-sharing that manufacturer share 15% of his profit to retailer in viewpoints of
                 maximizing total profits. Our future research is follows; through the expansion of the
                 current model, we additionally consider penalty costs from retailer. In current study,
                 we assumed that retailer always can meet manufacturer’s expected profits after
                 contracting with two partners. However, the sharing of revenue or cost support from
                 manufacturer can be just possible that manufacturer achieve his expected profits
                 through the increment of number of used cartridge returned by retailer. Thus, if
                 retailer doesn’t keep the promise of contract, manufacturer will require that collection
                 should pay the penalty costs to manufacturer.
                 Endnotes
                   1)
                      Mafakheri and Nasiri (2013). Revenue sharing coordination in reverse logistics.
                 Journal of Cleaner Production, 59, 185–196.
                 Acknowledgement
                 The present Research has been conducted by the Research Grant of Kwangwoon University in 2016.
                 Authors’ contributions
                 SW Data analysis, Simulation modeling and analysis. SJ Manuscript Writing, Idea Generation. Both authors read and
                 approved the final manuscript.
                 Competing interests
                 The authors declare that they have no competing interests.
Yoon and Jeong Journal of Open Innovation: Technology, Market, and Complexity (2017) 3:2                                                              Page 13 of 13
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