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基于雙層規(guī)劃模型的水產(chǎn)品冷鏈物流網(wǎng)絡(luò)優(yōu)化研究

發(fā)布時(shí)間:2018-11-25 13:46
【摘要】:隨著生活水平的提高,消費(fèi)者對(duì)水產(chǎn)品的品質(zhì)及安全提出了更高的要求。為緩解水產(chǎn)品生產(chǎn)和消費(fèi)的地域性差異,就需要水產(chǎn)品在流通的全過程中有專業(yè)的冷鏈物流進(jìn)行保障。我國冷鏈物流起步比較晚,在較長(zhǎng)的時(shí)間內(nèi)沒有得到足夠的重視,造成了我國冷鏈物流基礎(chǔ)設(shè)施、設(shè)備極為落后,冷鏈物流的技術(shù)標(biāo)準(zhǔn)及相關(guān)法律法規(guī)極為缺乏的局面。水產(chǎn)品冷鏈物流發(fā)展落后的問題有待解決,解決的途徑不僅僅是要加強(qiáng)冷鏈物流基礎(chǔ)設(shè)施建設(shè)及完善相關(guān)法律法規(guī),更要的建立起合理、高效的水產(chǎn)品冷鏈物流網(wǎng)絡(luò)體系。 本文通過對(duì)比國內(nèi)外水產(chǎn)品冷鏈物流網(wǎng)絡(luò)現(xiàn)有模式,分析我國水產(chǎn)品冷鏈物流網(wǎng)絡(luò)中存在的問題,并借鑒發(fā)達(dá)國家的經(jīng)驗(yàn),提出我國水產(chǎn)品冷鏈物流網(wǎng)絡(luò)優(yōu)化的方向。結(jié)合水產(chǎn)品本身具有的易腐性特征,本文構(gòu)建起水產(chǎn)品冷鏈物流網(wǎng)絡(luò)優(yōu)化雙層規(guī)劃模型,上層模型確定最佳的冷鏈物流中心選址;下層規(guī)劃確定配送的運(yùn)輸路徑。雙層規(guī)劃模型從戰(zhàn)略和戰(zhàn)術(shù)兩個(gè)角度,將水產(chǎn)品冷鏈物流網(wǎng)絡(luò)中兩個(gè)關(guān)鍵要素同時(shí)進(jìn)行優(yōu)化,實(shí)現(xiàn)整個(gè)冷鏈物流網(wǎng)絡(luò)總成本最小;谀P偷奶攸c(diǎn),本文設(shè)計(jì)出遺傳算法與蟻群算法相結(jié)合的混合算法對(duì)模型進(jìn)行求解,并引入算例,通過對(duì)算例進(jìn)行求解,得到冷鏈物流網(wǎng)絡(luò)節(jié)點(diǎn)的最佳選址及最優(yōu)配送路徑。 通過以上研究,文章最后得出結(jié)論:只有將冷鏈物流網(wǎng)絡(luò)中的選址優(yōu)化與配送路徑優(yōu)化結(jié)合起來進(jìn)行考慮,才能從根本上實(shí)現(xiàn)水產(chǎn)品冷鏈物流各主體之間的有效協(xié)調(diào)與配合,達(dá)到提高冷鏈物流運(yùn)作效率、降低作業(yè)成本,同時(shí)滿足消費(fèi)者對(duì)于快速、及時(shí)、高品質(zhì)的水產(chǎn)品需求的目的。
[Abstract]:With the improvement of living standards, consumers put forward higher requirements for the quality and safety of aquatic products. In order to alleviate the regional differences between production and consumption of aquatic products, it is necessary for aquatic products to be guaranteed by specialized cold-chain logistics in the whole process of circulation. The cold chain logistics in our country started relatively late and did not get enough attention in a long period of time, which resulted in the situation that the infrastructure of cold chain logistics in our country is extremely backward, the technical standard and relevant laws and regulations of cold chain logistics are extremely lacking. The problem of backward development of cold-chain logistics of aquatic products needs to be solved. The way to solve this problem is not only to strengthen the infrastructure construction of cold-chain logistics and improve the relevant laws and regulations, but also to establish a reasonable and efficient aquatic cold-chain logistics network system. By comparing the existing models of aquatic product cold chain logistics network at home and abroad, this paper analyzes the problems existing in the aquatic product cold chain logistics network in our country, and draws lessons from the experience of developed countries, and puts forward the direction of optimizing the aquatic product cold chain logistics network in our country. Combined with the perishability of aquatic products, this paper constructs the optimization bilevel programming model of aquatic products cold chain logistics network, the upper model determines the best location of cold chain logistics center, and the lower level planning determines the transportation route of distribution. From the perspective of strategy and tactics, the bilevel programming model optimizes the two key elements in the cold-chain logistics network of aquatic products at the same time, so that the total cost of the whole cold-chain logistics network is minimized. Based on the characteristics of the model, a hybrid algorithm combining genetic algorithm and ant colony algorithm is designed to solve the model. An example is introduced to solve the model, and the optimal location and distribution path of cold chain logistics network nodes are obtained. Through the above research, the article finally draws the conclusion: only by combining the location optimization and the distribution route optimization in the cold chain logistics network, can the coordination and cooperation among the main bodies of the aquatic product cold chain logistics be realized fundamentally. To improve the efficiency of cold chain logistics operation, reduce activity costs, and meet the needs of consumers for fast, timely, high quality aquatic products.
【學(xué)位授予單位】:北京交通大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2014
【分類號(hào)】:F252;F326.4

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