a国产,中文字幕久久波多野结衣AV,欧美粗大猛烈老熟妇,女人av天堂

不確定隨機(jī)性庫存優(yōu)化策略研究

發(fā)布時(shí)間:2018-05-06 01:29

  本文選題:(R + Q)補(bǔ)貨策略��; 參考:《中國民航大學(xué)》2017年碩士論文


【摘要】:庫存成本是企業(yè)生產(chǎn)經(jīng)營活動(dòng)中的重要組成部分,也是庫存管理的重要內(nèi)容。傳統(tǒng)的庫存問題通常將訂貨提前期或產(chǎn)品需求視為隨機(jī)變量,通過收集樣本數(shù)據(jù)應(yīng)用概率論方法進(jìn)行研究。然而在民航生產(chǎn)實(shí)踐中,飛機(jī)結(jié)構(gòu)件更新后由于缺乏歷史運(yùn)營數(shù)據(jù),其分布函數(shù)無法獲得。假如用概率論來處理這種現(xiàn)象可能會得到不合理的結(jié)果。因此,本文以不確定理論為基礎(chǔ),考慮不確定環(huán)境下的庫存優(yōu)化策略具有實(shí)際意義。具體內(nèi)容可以歸納如下:第一,建立不確定提前期環(huán)境下的連續(xù)性(R,Q)庫存模型。假定需求率是一個(gè)常數(shù),訂貨提前期為一個(gè)不確定變量并且服從不確定分布,決策變量為訂貨點(diǎn)和訂貨量,以庫存系統(tǒng)平均成本最小為目標(biāo)函數(shù),建立庫存成本的數(shù)學(xué)模型。最后,進(jìn)行實(shí)例分析,得出模型的各參數(shù)對庫存成本和最優(yōu)訂貨點(diǎn)都有著顯著影響。第二,建立不確定隨機(jī)需求環(huán)境下的周期性(T,Q)庫存模型。假設(shè)某零部件在原有設(shè)備的需求為隨機(jī)變量,在新設(shè)備中該零部件的未來需求為不確定變量,在原設(shè)備和新設(shè)備中該零部件需求是相互獨(dú)立的,并且允許缺貨,給定總的需求服從機(jī)會分布,建立總利潤最大化的數(shù)學(xué)模型,得到最優(yōu)訂貨量的解析解。最后,通過數(shù)值算例進(jìn)行具體分析,結(jié)果表明最優(yōu)訂貨量會隨著需求、貨物成本、貨物存儲費(fèi)用的變化而變化。
[Abstract]:Inventory cost is an important part of enterprise production and management, and also an important content of inventory management. The traditional inventory problem usually regards the lead time or product demand as random variables, and applies probability theory to research by collecting sample data. However, in the practice of civil aviation production, the distribution function of aircraft structural parts can not be obtained because of the lack of historical operation data. If we deal with this phenomenon with probability theory, we may get unreasonable results. Therefore, based on uncertainty theory and considering inventory optimization strategy in uncertain environment, this paper has practical significance. The specific contents can be summarized as follows: first, establish a continuous inventory model under uncertain lead time environment. Assuming that the demand rate is a constant, the lead time of order is an uncertain variable and the distribution of service is uncertain, the decision variable is order point and order quantity, and the minimum average cost of inventory system is taken as the objective function, the mathematical model of inventory cost is established. Finally, a case study shows that the parameters of the model have a significant impact on the inventory cost and the optimal ordering point. Secondly, the periodic TQs inventory model under the uncertain stochastic demand environment is established. Assuming that the demand for a component in the original equipment is a random variable, that the future demand for the component is an uncertain variable in the new equipment, that the demand for the component in the original equipment and the new equipment is independent of each other, and that the stock is allowed to be out of stock. Given the total demand service from the opportunity distribution, the mathematical model of maximizing the total profit is established, and the analytical solution of the optimal order quantity is obtained. Finally, through numerical examples, the results show that the optimal order quantity will vary with the demand, the cost of goods, and the cost of goods storage.
【學(xué)位授予單位】:中國民航大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:F274;O227

【參考文獻(xiàn)】

相關(guān)期刊論文 前5條

1 傅濤,楊勇智;航空備件訂購策略研究[J];航空維修與工程;2005年02期

2 鞏艷芬,任偉宏;設(shè)備更新的最優(yōu)策略及馬爾可夫決策[J];統(tǒng)計(jì)與決策;2004年12期

3 林勇,馬士華;基于隨機(jī)提前期的通用件安全庫存管理[J];工業(yè)工程與管理;2003年03期

4 羅兵,楊秀苔,熊中楷;隨機(jī)狀態(tài)下需求均值為線性函數(shù)時(shí)的EOQ模型[J];重慶大學(xué)學(xué)報(bào)(自然科學(xué)版);2002年05期

5 馬士華,林勇;基于隨機(jī)提前期的(Q,r)庫存模型[J];計(jì)算機(jī)集成制造系統(tǒng)-CIMS;2002年05期

相關(guān)碩士學(xué)位論文 前1條

1 李玉容;隨機(jī)訂貨提前期的供應(yīng)鏈庫存優(yōu)化[D];中南大學(xué);2010年

,

本文編號:1850185

資料下載
論文發(fā)表

本文鏈接:http://www.wukwdryxk.cn/shoufeilunwen/benkebiyelunwen/1850185.html


Copyright(c)文論論文網(wǎng)All Rights Reserved | 網(wǎng)站地圖 |

版權(quán)申明:資料由用戶e2836***提供,本站僅收錄摘要或目錄,作者需要?jiǎng)h除請E-mail郵箱bigeng88@qq.com
伊人热热久久原色播放www| 久久久久九九精品影院| 18禁免费无码无遮挡不卡网站| 久久96国产精品久久| 亚洲处破女| 久久久综合九色综合| h网站在线观看| 亚洲人成网77777亚洲色| 精品国偷自产在线| 亚洲精品无码AV片| 国产成人精品综合久久久久性色| 尹人香蕉99久久综合网站 | 最新影院| 青青草综合网| 中文二区| 1级黄色片| 无色福利| 国产av一级片| 91熟女| 亚洲一页| 天天操天天搞| 色一情一乱一乱一区免费网站| 99久久99| 亚洲国产一区二区a毛片| 老王亚洲AV综合在线观看| 最新国产精品剧情在线SS| 极品少妇HDXX麻豆HDXX| 精品无码人妻一区二区免费AV | 我在开会他在下添好爽视频| 99成人在线| 少妇高潮a一级| a级视频在线观看| 日韩欧美精品一区二区三区 | 狠狠操影院| 欧美黄色a| 亚洲黄色三级| 久久熟女五十路一区二区| 亚洲六月丁香色婷婷综合久久| 黑人强辱丰满的人妻熟女| 中文字幕一区二区人妻痴汉电车| 91国产|