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1、Lean Supply Chain 鮑夢(mèng)可A lean supply chain is one in which all participants perform according to lean principles, including level schedule loading using pull-based demand, deployment of continuous improvement activities, maintenance of sufficient (even excess) all participants across the supply chain,
2、 and establishing of long-term reciprocal relationships among all participants. Establishing a lean supply chain is important for organization. This is because the supply chain will eventually become noncompetitive if it fails to systematically improve its supply chain performance. This is an import
3、ant goal because supply chain costs often range between 50%-80% of all money spent by an organization. Another reason to improve operational performance with a high sense of urgency is the fact that customers demand cost reductions, on-time delivery, and higher quality based on the competitive envir
4、onment. Organizations should also develop internal competencies that competitors cannot easily emulate to remain competitive over time. The 10-step Solution Process can be applied very effectively to improve supply chain performance using Lean Six Sigma and operations research tools and methods.At a
5、n operational level, lean supply chain are characterized by rate-based demand and production smoothing through strict take time adherence. Take time is defined as the ratio of time available per day to produce the required schedule, that is, time per unit. As an example, if there are 480 minutes per
6、 day and the required manufacturing schedule is 48 units, the take time is 10 minutes per unit. This means the system is configured to produce exactly one unit every 10 minutes. A second characteristic of a lean supply chain is use of a mixed-model production schedule. A mixed-model production sched
7、ule minimizes process waste by reducing variations in lead-time and demand through changes to manufacturing schedules. These scheduling changes are enabled through modifications in product and process design. In mixed-model scheduling, the level of design commonality and modularity is significantly
8、increased, insuring that products are scheduled in groups having similar process and design features. A third characteristic of a lean supply chain is use of “demand pull” rather than “demand push” scheduling systems. Demand pull scheduling directly aligns the productive capacity of the supply chain
9、 to external customer demand patterns. In these systems, products are built based only on customer orders in real time, that is, up-front forecasting does not drive the schedule except at a high capacity allocation level. Unfortunately, not every organization has been able to fully implement lean su
10、pply chain concepts due to infrastructure issue related to IT systems and constraints in product and process designs. In these systems, organizations must rely on the master production scheduling (MPS) and material requirement planning (MRP II) systems to build components and products, however, thes
11、e situations make control of the system in real time difficult. To improve the local shop-floor control of orders, hybrid Kanban systems have been developed to integrate MPS/MRPII and Kanban systems.Lean supply chains are characterized by the ability to respond dynamically to changing customer deman
12、d as well as efficient asset utilization. These characteristics translate into high profitability and customer service for the organizations making up the lean supply chain. The effectiveness and maturity of a lean supply chain can be measured using the 20 important supply chain metrics. The first 1
13、2 key metrics are operational in nature and useful in identification and deployment of Lean Six Sigma projects at a tactical level. The 12 key supply chain metrics should be systematically improved at an operational level by the Lean Six Sigma projects at a tactical level. The 12 key supply chain me
14、trics should be systematically improved at an operational level by the Lean Six Sigma improvement team to drive overall supply chain financial performance and achieve customer service targets. The last 8 metrics are financial in nature and measure the overall financial effectiveness of a Lean supply
15、 chain. In particular, they measure the efficiency of asset utilization, including inventory and its impact on profitability. Using these 20 metrics, the degree of “Leanness” of a supply chain can be measured and benchmarked that operational improvements are aligned with business goals and objective
16、s. As an example, in best-in-class originations. The ROA ratio is in the double-digit range for such best-in-class lean supply chains as 3M, Intel, the Home Depot, Johnson and Johnson, Wal-Mart, and Dell. Along this line of though, may studies have shown that the key differentiators for superior sup
17、ply chain performance include proper metric definition, metric linkage, and sustained operational performance to ensure strategic execution. Lean Six Sigma deployments have enabled many supply chains to improve operational performance as measured by one or more of the 20 important supply chain metri
18、cs. Superior supply chain performance is based on specific core competencies inherent within an organizations supply chain. Core competencies may include improved product development, implementation of Lean Six Sigma practices, elimination of promotional activity to smooth demand, and simplification
19、 of product and process designs as well other systems. Some supply chains achieve superior performance by excelling in one more or more of these core competencies. In addition to the competencies already listed, lean supply chains execute strategy will at an operational level. This ensures that suff
20、icient capacity is available for the system to absorb demand variation in real time. These systems are also systematically improved to increase system flexibility. However, lean supply chains do not arbitrarily increase asset levels to achieve system flexibility. This is especially true for inventor
21、y investment levels. On the contrary, products and processes are designed, using lean methods, to ensure quick changeovers from one product to another using a variety of methods including, for example, mixed-model production, transfer batches, and system-constraint identification and management.In t
22、hese planning and control systems, customer demand is forecast at a strategic level, but operations are controlled at a local work-cell level using visual in real time. Supply chain panning and control are enhanced through linkage to external demand using advanced technology. The resultant operation
23、al efficiencies are seen in the form of superior return-on-asset (ROA) utilization efficiencies. In addition to ROA, gross margin return-assets (GMROI), calculated by dividing gross margin by average inventory investment, it a good indicator of the efficiency of inventory utilization.精細(xì)供應(yīng)鏈在精細(xì)供應(yīng)鏈中,所有
24、參與者都遵從精細(xì)原則,包括使用拉式需求的水平卸載計(jì)劃安排、持續(xù)改進(jìn)活動(dòng)的部署、維持足夠的(甚至過(guò)度的)能力去滿(mǎn)足外部的需求,嚴(yán)格的計(jì)劃安排使得整個(gè)供應(yīng)鏈中的參與者的利潤(rùn)最大化,以及在所有參與者中建立一個(gè)長(zhǎng)久的互相合作的關(guān)系。一個(gè)精細(xì)供應(yīng)鏈的建立對(duì)所有企業(yè)來(lái)說(shuō)都很重要。這是因?yàn)槿绻到y(tǒng)地改進(jìn)企業(yè)的供應(yīng)鏈性能失敗,供應(yīng)鏈最終將變得毫無(wú)競(jìng)爭(zhēng)力。這是個(gè)重要的目標(biāo),因?yàn)楣?yīng)鏈的花費(fèi)范圍經(jīng)常占一個(gè)組織所有花費(fèi)的50%-80%。而要以一種高度的緊迫感來(lái)改進(jìn)供應(yīng)鏈性能的另一個(gè)原因,是消費(fèi)者需求的花費(fèi)減少、準(zhǔn)時(shí)交貨、競(jìng)爭(zhēng)環(huán)境要求更高的質(zhì)量這樣一些事實(shí)。組織內(nèi)應(yīng)該提煉出組織內(nèi)部的競(jìng)爭(zhēng)力,使得其他競(jìng)爭(zhēng)者不能簡(jiǎn)單地與
25、之匹敵,從而長(zhǎng)時(shí)間維持競(jìng)爭(zhēng)力。使用精細(xì)西格瑪管理和運(yùn)籌學(xué)工具方法,使用“十步問(wèn)題解決過(guò)程”在改進(jìn)供應(yīng)鏈性能時(shí)變得十分有效。在運(yùn)作層面上,精細(xì)供應(yīng)鏈以基于比率的需求和在嚴(yán)格節(jié)拍時(shí)間中的生產(chǎn)均衡為特點(diǎn)。節(jié)拍時(shí)間的定義為每天可以用來(lái)生產(chǎn)所要求的清單的時(shí)間的比率,也就是生產(chǎn)每一單位的時(shí)間。例如,如果每天有480分鐘用來(lái)生產(chǎn),所要求的生產(chǎn)計(jì)劃為48單位的產(chǎn)品,那節(jié)拍時(shí)間就是每單位10分鐘。這意味著這個(gè)系統(tǒng)被設(shè)置為每10分鐘準(zhǔn)確生產(chǎn)一單位產(chǎn)品。精細(xì)供應(yīng)鏈的第二個(gè)特點(diǎn)是使用混合模型生產(chǎn)計(jì)劃?;旌夏P蜕a(chǎn)計(jì)劃可以減小研制期間的變數(shù)和減小生產(chǎn)計(jì)劃變動(dòng)引起的需求,從而使得生產(chǎn)過(guò)程中的廢物生產(chǎn)最小化。這些生產(chǎn)計(jì)劃變
26、化來(lái)源于產(chǎn)品調(diào)整和生產(chǎn)過(guò)程設(shè)計(jì)。 在混合生產(chǎn)計(jì)劃中設(shè)計(jì)的共性的模塊性水平顯著提高,確保產(chǎn)品都依據(jù)相似的生產(chǎn)過(guò)程和設(shè)計(jì)特點(diǎn)而歸為小組。精細(xì)供應(yīng)鏈的第三個(gè)特點(diǎn)是使用“拉式需求”而不是“推式需求”管理系統(tǒng)。拉式需求管理直接將供應(yīng)鏈的生產(chǎn)能力和外部的消費(fèi)者需求模式聯(lián)合在了一起。在這些系統(tǒng)中,產(chǎn)品生產(chǎn)僅僅基于消費(fèi)者的實(shí)時(shí)訂單,也就是說(shuō),直接的預(yù)測(cè)并不決定生產(chǎn)計(jì)劃,除非是在一個(gè)大數(shù)量的分配層次。然而,由于與技術(shù)系統(tǒng)相關(guān)的基礎(chǔ)設(shè)施器材的缺乏以及生產(chǎn)能力和過(guò)程設(shè)計(jì)上的局限,并不是每個(gè)組織都能夠充分實(shí)施精細(xì)供應(yīng)鏈概念。在這些系統(tǒng)中,組織必須依靠主生產(chǎn)排成和物資需求計(jì)劃系統(tǒng)來(lái)建立組織的組成部分和產(chǎn)品。然而,這些情
27、況使得要實(shí)時(shí)操控這些系統(tǒng)十分困難。為了改進(jìn)當(dāng)?shù)氐挠唵维F(xiàn)場(chǎng)控制,開(kāi)發(fā)了綜合主生產(chǎn)排程和物資需求計(jì)劃,以及看板系統(tǒng)的綜合看板系統(tǒng)。有自動(dòng)回應(yīng)消費(fèi)者需求改變和有效利用資源的能力是精細(xì)供應(yīng)鏈的特點(diǎn)。這些特點(diǎn)將轉(zhuǎn)化為構(gòu)造精細(xì)供應(yīng)鏈的組織的高盈利能力和消費(fèi)者服務(wù)。精細(xì)供應(yīng)鏈的效力和成熟可以用20個(gè)重要的供應(yīng)鏈標(biāo)準(zhǔn)來(lái)衡量。前面12個(gè)關(guān)鍵標(biāo)準(zhǔn)在本質(zhì)上是有關(guān)于操作的,同時(shí)在戰(zhàn)略層面上對(duì)于六西格瑪工程的識(shí)別和提高都很有作用。這12個(gè)關(guān)鍵的供應(yīng)鏈標(biāo)準(zhǔn)應(yīng)該通過(guò)六西格瑪工程的戰(zhàn)略層面來(lái)系統(tǒng)性的在操作層面上提高。同時(shí)由六西格瑪工程改進(jìn)團(tuán)隊(duì)來(lái)實(shí)施從而推動(dòng)整個(gè)供應(yīng)鏈的財(cái)務(wù)業(yè)績(jī)和取得消費(fèi)者服務(wù)的目標(biāo)。后面的八個(gè)標(biāo)準(zhǔn)本質(zhì)上與財(cái)務(wù)
28、無(wú)關(guān),同時(shí)可以衡量整個(gè)精細(xì)供應(yīng)鏈的財(cái)務(wù)效力。特別的是,他們可以測(cè)量資產(chǎn)的有效利用率,包括存貨和存貨對(duì)于盈利程度的影響。使用者20個(gè)標(biāo)準(zhǔn),可以測(cè)量供應(yīng)鏈的精細(xì)程度和標(biāo)桿管理來(lái)確保操作上的提高是與商業(yè)目標(biāo)和客觀性相結(jié)合的。例如,在最佳的初始中,ROA比率在3M,英特爾,家得寶,強(qiáng)生,沃爾瑪和戴爾的最佳的精細(xì)供應(yīng)鏈中都在兩位數(shù)的范圍內(nèi)。沿著這個(gè)思路,許多學(xué)術(shù)研究都已經(jīng)表明了對(duì)于優(yōu)秀的供應(yīng)鏈業(yè)績(jī)來(lái)說(shuō)關(guān)鍵的微分器包括合格的標(biāo)準(zhǔn)的定義,標(biāo)準(zhǔn)的連鎖和持續(xù)的操作業(yè)績(jī)來(lái)確保戰(zhàn)略的實(shí)施。用20個(gè)重要的供應(yīng)鏈標(biāo)準(zhǔn)中的一個(gè)或多個(gè)來(lái)測(cè)量,精細(xì)六西格瑪提高使得許多供應(yīng)鏈能夠提高操作業(yè)績(jī)。 Summary After ne
29、arly a semester of study, let me know more about the knowledge of logistics, especially logistics English" this course is of great help to me. I think the logistics in the daily life of the people plays a very important role. Just look at our country logistics present situation, discovery still
30、 has great market potential, now the development of our country is in a stable growth, the GDP is not increased, the market for goods transport and distribution in great demand.Logistics refers to the use of modern information technology and equipment, the article from supply the ground to receive a
31、ccurate, timely, safe, quality and quantity, door to door rationalization service model and advanced service process. Logistics is the commodity production and the emergence of commodity production, along with the development of logistics, it is one of the oldest traditional economic activities. As
32、everyone knows, the logistics function throughout the enterprise production, sale of the entire process, so that enterprises and many different functions are related, to do a good job in logistics need to understand serve different functions characteristics and needs.Logistics management of Division
33、 has the following classification standard:One, macroscopical and microcosmic logistics logistics.The macroscopical logistics refers to the reproduction of social total logistics activity, from social reproduction overall perspective to understand and study the logistics activities. Macro logistics
34、mainly focuses on the process of social reproduction logistics operation rules and the logistics activities of the overall behavior of.The microcosmic logistics refers to the consumer, producer enterprises involved in the actual, specific logistics activities. In the logistics process, the microcosm
35、ic logistics relates only to the system in a local, a link or a region.Two, the social logistics and enterprise logisticsSocial logistics means beyond to society as a whole category, for the community for the purpose of logistics. The logistics of the social sex is very strong, often by professional
36、 logistics undertaker to complete. Enterprise logistics is from the enterprise point of view on research relating to logistics activities, is a specific, microcosmic logistics activities typical of field, which consists of enterprise production logistics, supply logistics, enterprise logistics, ente
37、rprise logistics, logistics enterprises waste recycling several parts.Three, international logistics and regional logisticsInternational logistics refers to the production and consumption in two or more than two countries (or regions) performed independently of the circumstances, in order to overcom
38、e the production and consumption of the space distance between the distance and time, and the goods (cargo) conducted by the physical movement of an international economic and trade activities. Therefore, the international logistics is the logistics between the different countries, the logistics of international trade is an inevitable part of the mutual trade between countries, eventually to achieve through international logistics. International logistics is a modern logistics system in logistics area
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