發(fā)布時間：2018-05-17 01:27

  本文選題：生鮮食品 + 冷鏈物流�。� 參考：《天津商業(yè)大學(xué)》2017年碩士論文

【摘要】：中國經(jīng)濟(jì)的快速發(fā)展使得居民的生活水平得到了極大的提高,居民的飲食結(jié)構(gòu)也變得越來越多樣化,此時,居民對生鮮食品的需求不斷增加。但是,生鮮食品時效性強(qiáng)、保質(zhì)期短等性質(zhì)加大了生鮮食品存儲、運(yùn)輸?shù)碾y度,一般的常溫物流很難滿足生鮮食品配送的條件,這種情況下冷鏈物流應(yīng)運(yùn)而生。冷鏈物流泛指冷藏冷凍類食品在生產(chǎn)、貯藏、運(yùn)輸、銷售,到消費(fèi)前的各個環(huán)節(jié)中始終處于規(guī)定的低溫環(huán)境下,以保證食品質(zhì)量,減少食品損耗的一項系統(tǒng)工程。與發(fā)達(dá)國家相比,我國的冷鏈物流行業(yè)仍然處于起步期,冷鏈技術(shù)尚不完善,缺乏相應(yīng)的專業(yè)型人才,這些都限制了我國冷鏈物流行業(yè)的發(fā)展。冷鏈物流企業(yè)也逐漸認(rèn)識到配送過程中的車輛路徑規(guī)劃問題在配送過程中極為重要,不僅關(guān)系到成本問題、生鮮食品的質(zhì)量,還將直接影響到客戶對配送服務(wù)的滿意程度。本文主要研究生鮮食品冷鏈物流中的路徑問題,在對冷鏈物流的概念、特點進(jìn)行了研究分析的基礎(chǔ)上,分析了我國的冷鏈物流產(chǎn)業(yè)。之后對車輛路徑問題從其定義、分類及解決方法三個方面進(jìn)行了研究。第三部分從運(yùn)籌學(xué)的角度出發(fā),分析了生鮮食品冷鏈物流配送過程中所產(chǎn)生的運(yùn)輸成本、損失成本與能源消耗成本,之后結(jié)合現(xiàn)實情況確定了模型中的六個約束條件,并建立了以總的經(jīng)濟(jì)成本最小化為目標(biāo)函數(shù)的數(shù)學(xué)模型。由于車輛路徑問題屬于NP難題,并不能通過有效算法得到其精確解,本文的第四部分介紹了解決該問題的一種啟發(fā)式算法——蟻群算法,該算法通過對螞蟻群從洞穴出發(fā)尋找食物過程的模擬,來實現(xiàn)對最優(yōu)路徑的搜索,并就如何利用蟻群算法實現(xiàn)路徑優(yōu)化的步驟進(jìn)行了研究。之后,本文選取了一個實例——特易得供應(yīng)鏈管理公司,利用該公司某日的實際配送數(shù)據(jù)對其進(jìn)行了生鮮食品冷鏈物流配送的路徑優(yōu)化研究,通過利用MATLAB軟件編程,得到了最優(yōu)的配送方案,并與該公司的實際配送路線進(jìn)行了成本之間的對比,證明了本模型在成本優(yōu)化方面的可行性、有效性。最后,針對中國冷鏈物流產(chǎn)業(yè)的特點及我國冷鏈產(chǎn)業(yè)在發(fā)展方面的問題,提出了加強(qiáng)配送成本控制、增強(qiáng)應(yīng)對突發(fā)事件的能力、加強(qiáng)冷鏈產(chǎn)業(yè)的信息化建設(shè)、完善冷鏈物流產(chǎn)業(yè)鏈以及完善冷鏈物流產(chǎn)業(yè)相關(guān)的政策法規(guī)與監(jiān)督等五個方面的對策與措施,以提高配送效率,減少生鮮食品配送過程中的損耗,降低配送成本、保障冷鏈物流企業(yè)的效益,推進(jìn)我國冷鏈物流產(chǎn)業(yè)的發(fā)展。
[Abstract]:With the rapid development of China's economy, the living standard of residents has been greatly improved, and the residents' dietary structure has become more and more diversified. At this time, the demand for fresh food is increasing. However, the quality of fresh food is strong and the shelf life is short, which has increased the storage of fresh food, the difficulty of transportation, and the general logistics of normal temperature. It is difficult to meet the conditions of fresh food distribution. In this case, cold chain logistics emerges as the times require. Cold chain logistics refers to a systematic project to ensure the quality of food and reduce the loss of food in all links of production, storage, transportation, sales and consumption before consumption. The cold chain logistics industry in our country is still in the beginning period, the cold chain technology is not perfect and the professional talents are lacking. All these restrict the development of the cold chain logistics industry in our country. The cold chain logistics enterprises have gradually realized that the vehicle routing problem in the distribution process is important for the distribution of Cheng Zhongji, which is not only related to the cost problem, but also to the cost problem. The quality of fresh food will also directly affect the satisfaction of the customer to the distribution service. This paper mainly studies the path problem in the cold chain logistics of fresh food. On the basis of the research and analysis of the concept and characteristics of cold chain logistics, the cold chain logistics industry in China is analyzed, and the vehicle routing problem is defined, classified and solved. The third part studies the three aspects. From the perspective of operational research, the transportation cost, the cost of loss and the cost of energy consumption in the process of fresh food cold chain logistics distribution are analyzed, and then six constraints in the model are determined according to the reality, and the target letter is set up with the total economic cost minimization. As the vehicle routing problem belongs to the NP problem, it can not get the exact solution by the effective algorithm. The fourth part of this paper introduces a heuristic algorithm, ant colony algorithm, to solve the problem. The algorithm can search the optimal path by the simulation of the ant group from the cave to find the food process. The steps of how to implement the path optimization by ant colony algorithm are studied. After that, this paper selects an example, the supply chain management company, which uses the actual distribution data of the company to optimize the cold chain logistics distribution path of fresh food. Through the MATLAB software programming, it gets the best. The distribution scheme is compared with the cost of the actual distribution line of the company, which proves the feasibility and effectiveness of this model in the cost optimization. Finally, in view of the characteristics of the cold chain logistics industry in China and the problems in the development of the cold chain industry in China, this paper proposes to strengthen the control of distribution cost and enhance the ability to deal with emergencies. To strengthen the information construction of cold chain industry, improve the cold chain logistics industry chain and improve the cold chain logistics industry related policies and regulations and supervision and other five countermeasures and measures, in order to improve the efficiency of distribution, reduce the loss in the process of fresh food distribution, reduce the cost of distribution, ensure the efficiency of cold chain logistics enterprises, and promote the cold chain of our country The development of the logistics industry.
【學(xué)位授予單位】：天津商業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：F326.6

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