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Cost Effectiveness Analysis on a Vehicle Dispatching Problem: A Case Study of Ready Mixed Concrete Industry 蕭雅竹、邱創鈞

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Cost Effectiveness Analysis on a Vehicle Dispatching Problem: A Case Study of Ready Mixed Concrete Industry

蕭雅竹、邱創鈞

E-mail: [email protected]

ABSTRACT

Ready Mixed Concrete (RMC) plays the important role in the construction industry; because it is one of the most widely used and highly demanded material in the construction industry. Form the construction site perspective; they expect the operations of the casting concrete without interruption. Another perspective from the RMC firms when many delivering requests from various construction sites arriving at the same time, they try to maximize the plant’s profits. Under this condition, the RMC firm must completes all of the RMC batch plant to prevent any delay for the the next coming period of orders. In this research, we find the dispatching schedule which minimizes the total flow time at construction sites and satisfy the requests from various construction sites.

First, a model of dispatching RMC trucks based on the operation of the RMC industry is constructed. Then, we propose Genetic Algorithms (GA) and fast messy Genetic Algorithm (fmGA) to get a near optimal solution in a reasonable computation time. Finally, we address the relation between the orders and the number of trucks for fulfilling the demand from each sites and analyze the effectiveness analysis o investment on purchasing additional trucks. The experimental results can facilitate manager’s to sequence the concrete arrangements delivery to achieve a more cost-effective scheduling.

Keywords : Ready mixed concrete ; Dispatching schedule ; Cost effectiveness analysis ; Genetic algorithms ; Fast messy genetic algorithm

Table of Contents

封面內頁 簽名頁 博碩士論文暨電子檔案上網授權書... iii 中文摘要... iv ABSTRACT... v 誌謝... vi 目錄... vii 圖目 錄... ix 表目錄... x 第一章 緒論... 1 1.1 研究動機與背

景... 1 1.2 研究目的... 3 1.3 研究流程... 4 第二章 預拌車派車排程文獻探 討... 7 第三章 派車排程模式之建構... 11 3.1 研究問題陳述... 12 3.2 研究範圍與限 制... 14 3.3 參數定義... 14 3.4 範例說明... 18 第四章 演算法之建

構... 21 4.1 基因演算法... 21 4.2 快速混雜基因演算法... 27 4.3 基因演算法與快速 混雜基因演算法之異同... 34 第五章 案例驗證與分析... 35 5.1 案例驗證... 36 5.2 基因演算 法與快速混雜基因演算法之分析比較.. 43 5.3 成本效益分析... 45 第六章 結論與未來研究方向... 56 6.1 結論... 56 6.2 未來研究方向... 57 參考文獻... 59 附表A 基因演算 法之工地派遣順序... 62 附表B 快速混雜基因演算法之工地派遣順序... 64

REFERENCES

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運用系統模擬推估物流體系導入無線射頻辨識系統之成本效益分析研究」,聖約翰科技大學自動化及機電整合研究所,2006 [ 12 ] 曾伯 堯,「應正視砂石供給對預拌混凝土業的影響」,全球台商e焦點—台灣財經評論,第53期,2006年6月6日。

http://twbusiness.nat.gov.tw/paper/y06/06/53-241.htm [ 13 ] 陳惠娟,「結合QFD及模糊基因演算法於工程設計之應用」,國立成功大學 土木工程研究所碩士論文,2004 [ 14 ] 鄭凱中,「應用模糊基因演算法於營建企業之投資組合管理」,國立成功大學土木工程研究所碩

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