• Title/Summary/Keyword: Cooperative Chain

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International Competitive Improvement through Stream Supply Chain Cooperative System Building of Textile Industry in the Daegu District (대구지역 섬유산업 스트림 공급망 협력체계 구축과 국제경쟁력 강화 방안)

  • Ryu, Geun-Woo;Kim, Seung-Ho
    • International Commerce and Information Review
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    • v.12 no.2
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    • pp.3-27
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    • 2010
  • This paper covers a plan to build supply chain cooperation systems among stream of the textile industry to strengthen international competitiveness. To obtain the study objective, it has been reviewed the theoretical rationale relating to organizational cooperation model and discussion and performed the case study that analyzed stream group and participated firms to the textile stream policy project. The analyzed stream cooperative types that measured configuration of cooperative degree and productive type are new market creation, technology improvement, relation maintenance, and relation cease. Two types - new market creation and technology improvement - have significant effect of the textile stream cooperation. Key successful factors of these two effective types are the external intervention of specialized consulting organization and build internal coordination and integrated mechanism to the cooperative stream group and participated firms.

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Energy Harvesting in Multi-relay Multiuser Networks based on Two-step Selection Scheme

  • Guo, Weidong;Tian, Houyuan;Wang, Qing
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.11 no.9
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    • pp.4180-4196
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    • 2017
  • In this paper, we analyze average capacity of an amplify-and-forward (AF) cooperative communication system model in multi-relay multiuser networks. In contrast to conventional cooperative networks, relays in the considered network have no embedded energy supply. They need to rely on the energy harvested from the signals broadcasted by the source for their cooperative information transmission. Based on this structure, a two-step selection scheme is proposed considering both channel state information (CSI) and battery status of relays. Assuming each relay has infinite or finite energy storage for accumulating the energy, we use the infinite or finite Markov chain to capture the evolution of relay batteries and certain simplified assumptions to reduce computational complexity of the Markov chain analysis. The approximate closed-form expressions for the average capacity of the proposed scheme are derived. All theoretical results are validated by numerical simulations. The impacts of the system parameters, such as relay or user number, energy harvesting threshold and battery size, on the capacity performance are extensively investigated. Results show that although the performance of our scheme is inferior to the optimal joint selection scheme, it is still a practical scheme because its complexity is much lower than that of the optimal scheme.

Transaction Models within a Supply Chain and Optimal Wholesale Pricing of Two Competing Suppliers (경쟁이 있는 공급사슬의 거래모형과 최적납품가격)

  • Park, Hae-Churl;Ahn, Bong-Hyun
    • Journal of the Korean Operations Research and Management Science Society
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    • v.37 no.3
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    • pp.117-134
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    • 2012
  • We analyze a systematic relationship between transaction mechanisms and wholesale pricing schemes within a supply-chain with two competing suppliers and a monopolistic retailor. When one of the suppliers changes its transaction mechanism from an independent scheme to a cooperative one, then the wholesale prices of the suppliers become cheaper than before. When one supplier changes its transaction scheme to a cooperative one while the other supplier sticks to the existing independent transaction scheme, we show that the supplier with a cooperative transaction scheme can realize the increased profit via a profit sharing contract with the retailer but the supplier with independent transaction scheme can face the decreased profit. We also show that both suppliers can achieve the higher profits by adopting the cooperative schemes with the retailer.

Multi-Stage Supply Chain Network Design Using a Cooperative Coevolutionary Algorithm Based on a Permutation Representation (순열 표현 기반의 협력적 공진화 알고리즘을 사용한 다단계 공급사슬 네트워크의 설계)

  • Han, Yong-Ho
    • Korean Management Science Review
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    • v.29 no.2
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    • pp.21-34
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    • 2012
  • This paper addresses a network design problem in a supply chain system that involves locating both plants and distribution centers, and determining the best strategy for distributing products from the suppliers to the plants, from the plants to the distribution centers and from the distribution centers to the customers. This paper suggests a cooperative coevolutionary algorithm (CCEA) approach to solve the model. First, the problem is decomposed into three subproblems for each of which the chromosome population is created correspondingly. Each chromosome in each population is represented as a permutation denoting the priority. Then an algorithm generating a solution from the combined set of chromosomes from each population is suggested. Also an algorithm evaluating the performance of a solution is suggested. An experimental study is carried out. The results show that our CCEA tends to generate better solutions than the previous CCEA as the problem size gets larger and that the permutation representation for chromosome used here is better than other representation.

Optimal Routing and Uncertainty Processing using Geographical Information for e-Logistics Chain Execution

  • Kim, Jin Suk;Ryu, Keun Ho
    • Management Science and Financial Engineering
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    • v.10 no.2
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    • pp.1-28
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    • 2004
  • The integrated supply chain of business partners for e-Commerce in cyber space is defined as Logistics Chain if the cooperative activities are logistics-related. Logistics Chain could be managed effectively and efficiently by cooperative technologies of logistics chain execution. In this paper, we propose a routing and scheduling algorithm based on the Tabu search by adding geographical information into existing constraint for pick-up and delivery process to minimize service time and cost in logistics chain. And, we also consider an uncertainty processing for the tracing of moving object to control pick-up and delivery vehicles based on GPS/GIS/ITS. Uncertainty processing is required to minimize amount of telecommunication and database on vehicles tracing. Finally, we describe the Logistics Chain Execution (LCE) system to perform plan and control activities for postal logistics chain. To evaluate practical effects of the routing and scheduling system, we perform a pretest for the performance of the tabu search algorithm. And then we compare our result with the result of the pick-up and delivery routing plan generated manually by postmen.

Analysis of Relationship between Supply Chain Management and Food Production Strategies for Food Supplies in Hotel Restaurants (호텔 레스토랑의 식자재 조달 관련 공급 체인 관리와 푸드 생산 전략 간의 관계 분석)

  • Kang, Seok-Woo;Park, Ji-Yang
    • Culinary science and hospitality research
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    • v.13 no.4
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    • pp.107-118
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    • 2007
  • This research aimed to understand the relationship between comparative superiority elements of the supply chain activities for food supplies in the hotel industry. The samples are obtained from exclusive hotels located in the Seoul area. A statistic package program called SPSS was employed to conduct reliability analysis, factor analysis, t-test, correlation analysis, and multiple regression analysis. Results of a multiple regression analysis between supply chain management and food production strategies were as follows; company's characters and cooperative relations with suppliers had a significant impact on cost while quality was significantly affected by company's characters, information system, cooperative relations with suppliers, and supply chain activities. It was revealed that all factors had a significant impact on flexibility and delivery date.

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An Empirical Study on the Influence of Collaborative Performance of Large Corporations and SMEs Value Chain Competence in SMEs (중소기업 가치사슬 경쟁력이 대.중소기업 상생활동 성과에 미치는 영향에 관한 실증연구)

  • Park, Woo-Jong;Park, Kwang-Ho
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.35 no.3
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    • pp.16-23
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    • 2012
  • Large corporations and small and medium-sized enterprises businesses have tried finding cooperative partner models through win-win activity. In this study, certain factors were researched, which affect on the achievements by win-win activity of large corporative and SMEs from a standpoint of development by SMEs, the establishment of confidence, technical innovation and competence of value chain competence in order to enforce supplying value under the win-win activity. The result of this research presents that the achievement of win-win activity by large corporations and SMEs is related positively to developmental capability, cooperative culture, developmental innovation, innovation of process, outer technological innovation and value chain.

Link-Level Performance of Cooperative Multi-Hop Relaying Networks with MDS Codes

  • Sakakibara, Katsumi;Ito, Daichi;Taketsugu, Jumpei
    • Journal of Communications and Networks
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    • v.13 no.4
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    • pp.393-399
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    • 2011
  • We evaluate the link-level performance of cooperative multi-hop relaying networks with an maximum distance separable (MDS) code. The effect of the code on the link-level performance at the destination is investigated in terms of the outage probability and the spectral efficiency. Assuming a simple topology, we construct an absorbing Markov chain. Numerical results indicate that significant improvement can be achieved by incorporating an MDS code. MDS codes successfully facilitate recovery of the message block at a relaying node due to powerful error-correcting capability, so that it can reduce the outage probability. Furthermore, we evaluate the average number of hops where the message block can be delivered.

Cooperative Game Theory Application for Three-Echelon Supply Chain (3단계 공급사슬게임을 위한 협조적 게임이론의 적용)

  • Lee, Dongju
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.42 no.3
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    • pp.15-24
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    • 2019
  • Fair Allocation of profits or costs arising from joint participation by multiple individuals or entities with different purposes is essential for their continuing involvement and for their dissatisfaction reduction. In this research, fair allocation of the profits of forming a grand coalition in Three-Echelon Supply Chain (TESC) game that is composed of manufacturer, distributor and retailer, is studied. In particular, the solutions of the proportional method of profit, the proportional method of marginal profit, and Shapley value based on cooperative game theory are proved to be in the desirable characteristics of the core. The proportional method of profit and the proportional method of marginal profit are often used because of their ease of application. These methods distribute total profit in proportion to profits or marginal profits of each game participant. In addition, Shapley value can be defined as the average marginal profit when one game player is added at a time. Even though the calculation of the average of all possible marginal profits is not simple, Shapley value are often used as a useful method. Experiments have shown that the solution of the incremental method, which calculates the marginal cost of adding game players in the order of manufacturers, distributors and retailers, does not exist in the core.

Trend of Food Industry: Structural Change of Food Supply Chain and Prospect of Cooperative Network with Producer (국내외 산업동향: 식품 서플라이체인(supply chain)의 구조전환과 산지와의 협동형 네트워크 전망)

  • Choi, Tae-Dong
    • Bulletin of Food Technology
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    • v.23 no.1
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    • pp.96-103
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    • 2010
  • 생산, 가공, 유통, 그리고 소매로 이어지는 식품 공급의 흐름은 분업체제에서 복잡하게 뒤얽혀 있는 통합적인 형태로 변화해오고 있다. 그 변화를 뒤돌아보고 금후의 협동적 시스템 구축을 위한 과제를 찾아본다.

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