p11 managing supply chain inventory
Supply Chain Management
Supply Chain Management供应链的概念要想打造一流的供应链，需要企业全民参与。
因为供应链本身就是一个跨职能部门的概念，企业所有的员工都得了解供应链，并在建设高效供应链的过程中提供支持。
对于企业领导人来说，要在组织中普及有关供应链的知识，帮助员工更清楚地了解自己对成功实施供应链的重要影响，以及每个部门、每个人所扮演的角色。
有这样一个概念：理想情况下，如果公可上下都了解并应用它，便能提升企业的运营效率和财务表现，成为公司竞争优势的新来源；但实际情况中，大部分员工只是耳闻，不知其详，另外一些了解的人对它的解释却是各执一端。
这个概念是什么呢？就是供应链管理（SCM）。
大部分专家很可能对供应链的基本组成甚至定义已经达成了一致。
然而，许多其他部门的经理却并不十分清楚供应链经理在做些什么，对供应链能够带来的好处也并不称道。
可想而知，这些经理们对于自己能为供应链项目的成功实施贡献些什么也是浑然不晓。
供应链知识需要普及供应链经理的工作之所以这么难以被众人理解，部分是因为对"供应链"这个概念的看法和定义太多太杂。
供应链研究的权威、美国密歇根州立大学的蒙兹卡教授（Robert Monczka）指出，关于供应链的说法，一个组织里甚至都可能有上好几种。
下面的例子向你说明了这种情况可能带来的负面结果。
一家消费品企业的高管们组建了一个团队，来改进供应链，但最近他们发现收效甚微。
来自外部的评估结果是：团队成员并没有充分了解供应链管理的概念和目标。
他们没能站在公司整体的高度把握公司究竟须要达到什么目的，或者没能把握企业从垂直结构（职能型）向水平结构（跨职能）的转变需要做哪些事情。
团队的一些成员也承认，他们的视野受到了传统的职能型理念的束缚。
而当他们要跨部门或跨职能边界寻求效率改进的机会时，却总会遭遇到来自职能部门经理的直接阻挠。
这个例子说明，必须在整个企业内部普及供应链常识。
其他部门的经理和团队也须要了解供应链的概念，因为在支持供应链的活动和流程上，他们是不可缺少的一分子。
（完整版）供应链管理第三版Unit11习题与答案
（完整版）供应链管理第三版Unit11习题与答案Chapter 11Managing Uncertainty in the Supply Chain: Safety Inventory True/False1. Safety inventory is inventory carried for the purpose of satisfying demand thatexceeds the amount forecasted for a given period.Answer: TrueDifficulty: Moderate2. Safety inventory is carried because demand forecasts are accurate and aproduct shortage may result if the forecast demand exceeds the actual demand.Answer: FalseDifficulty: Moderate3. Raising the level of safety inventory increases product availability and thus themargin captured from customer purchases.Answer: TrueDifficulty: Moderate4. Raising the level of safety inventory increases inventory holding costs.Answer: TrueDifficulty: Easy5. Carrying excessive inventory can help counter demand volatility when newproducts come on the market.Answer: FalseDifficulty: Moderate6. The appropriate level of safety inventory is determined by the uncertainty of bothdemand and supply and the desired level of cycle inventory.Answer: FalseDifficulty: Moderate7. As the uncertainty of supply or demand grows, the required level of safetyinventories increases.Answer: TrueDifficulty: Moderate8. As the desired level of product availability increases, the required level of safetyinventory decreases.Answer: FalseDifficulty: Easy9. Lead time is the gap between when an order is placed and when it is received.Answer: TrueDifficulty: Easy10. The coefficient of variation measures the size of the relative certainty of cycleinventory.Answer: FalseDifficulty: Easy11. Product availab ility reflects a firm’s ability to fill a customer order out of availableinventory.Answer: TrueDifficulty: Moderate12. Order fill rate is the fraction of product demand that issatisfied from product ininventory.Answer: FalseDifficulty: Moderate13. Product fill rate is the fraction of product demand that is satisfied from product ininventory.Answer: TrueDifficulty: Moderate14. The distinction between product fill rate and order fill rate is significant in a singleproduct situation.Answer: FalseDifficulty: Hard15. Tracking order fill rates is important when customers place a high value on theentire order being filled simultaneously.Answer: TrueDifficulty: Easy16. With continuous review, inventory is continuously tracked and an order for a lotsize Q is placed at regular intervals of time.Answer: FalseDifficulty: Hard17. With periodic review, inventory status is checked at regular intervals and an orderis placed to raise the inventory level to a specified threshold.Answer: TrueDifficulty: Hard18. The expected shortage per replenishment cycle(ESC) isthe average units ofdemand that are satisfied from inventory in stock per replenishment cycle.Answer: FalseDifficulty: Hard19. A shortage occurs in a replenishment cycle only if the demand during the leadtime exceeds the ROP.Answer: TrueDifficulty: Moderate20. The fill rate increases and the cycle service level decreases as the safetyinventory is increased.Answer: FalseDifficulty: Moderate21. For the same safety inventory, an increase in lot size increases the fill rate butnot the cycle service level.Answer: TrueDifficulty: Hard22. The required safety inventory grows rapidly with a decrease in the desiredproduct availability.Answer: FalseDifficulty: Easy23. The required safety inventory increases with an increase in the lead time and thestandard deviation of periodic demand.Answer: TrueDifficulty: Easy24. A goal of any supply chain manager is to reduce the level of safety inventoryrequired regardless of the affect product availability.Answer: FalseDifficulty: Easy25. In most supply chains, the key to reducing the underlying forecast uncertainty isto link all forecasts throughout the supply chain to customer demand data.Answer: TrueDifficulty: Moderate26. A reduction in supply can help dramatically reduce safety inventory requiredwithout hurting product availability.Answer: FalseDifficulty: Moderate27. Aggregation reduces the standard deviation of demand only if demand acrossthe regions being aggregated is not perfectly positively correlated.Answer: TrueDifficulty: Moderate28. In case demand in different geographical regions is about the same size andindependent, aggregation increases safety inventory by the square root of thenumber of areas aggregated.Answer: FalseDifficulty: Moderate29. If aggregation reduces the required safety inventory fora product by a smallamount, it may be best to carry the product in multiple decentralized locations to reduce response time and transportation cost.Answer: TrueDifficulty: Moderate30. The lower the coefficient of variation of an item, the greater the reduction insafety inventories as a result of centralization.Answer: FalseDifficulty: Hard31. Manufacturer-driven substitution increases overall profitability for themanufacturer by allowing some aggregation of demand, which reduces theinventory requirements for the same level of availability.Answer: TrueDifficulty: Moderate32. Postponement allows the supply chain to delay product differentiation, whichresults in disaggregating most of the inventories in the supply chain.Answer: FalseDifficulty: Moderate33. Periodic review policies require more safety inventory than continuous reviewpolicies for the same level of product availability.Answer: TrueDifficulty: Easy34. When using a continuous review policy, a manager has toaccount for theuncertainty of demand during the lead time and the review interval.Answer: FalseDifficulty: EasyMultiple Choice1. Inventory carried for the purpose of satisfying demand that exceeds the amountforecasted for a given period isa. cycle inventory.b. demand inventory.c. safety inventory.d. security inventory.e. all of the aboveAnswer: cDifficulty: Easy2. Safety inventory is carried becausea. demand forecasts are accurate.b. demand forecasts are uncertain.c. adequate supplies are available.d. excess product was manufactured.e. forecast demand exceeds the actual demand.Answer: bDifficulty: Moderate3. The trade-off that a supply chain manager must consider when planning safetyinventory isa. increasing product availability versus increasing inventory holding costs.b. decreasing product availability versus decreasinginventory holding costs.c. increasing product availability versus raising the level of safety inventory.d. decreasing product availability versus decreasing the level of safetyinventory.e. none of the aboveAnswer: aDifficulty: Moderate4. The issue of product availability and the level of safety inventory is particularlysignificant in industries wherea. product life cycles are short and demand is stable.b. product life cycles are short and demand is very volatile.c. product life cycles are long and demand is stable.d. product life cycles are long and demand is very volatile.e. a and b onlyAnswer: bDifficulty: Moderate5. A key to success at which company has been its ability to provide a high level ofproduct availability to customers while carrying very low levels of safety inventory in its supply chain?a. Compaqb. Hewlett-Packardc. Delld. Packard-Belle. all of the aboveAnswer: cDifficulty: Moderate6. What key question(s) need(s) to be considered when planning safety inventoryfor any supply chain?a. What is the appropriate lead time to establish?b. What is the appropriate level of safety inventory to carry?c. What actions can be taken to improve product availability while reducingsafety inventory?d. a and b onlye. b and c onlyAnswer: eDifficulty: Moderate7. The appropriate level of safety inventory is determined bya. the uncertainty of both demand and supply.b. the desired level of product availability.c. the desired level of cycle inventory.d. the processes in a supply chain are divided into 2 categories dependingall of the abovee. a and b onlyAnswer: eDifficulty: Moderate8. As the uncertainty of supply or demand grows, the required level of safetyinventoriesa. decreases.b. increases.c. remains stable.d. both a and be. none of the aboveAnswer: bDifficulty: Moderate9. As the desired level of product availability increases, the required level of safetyinventorya. decreases.b. increases.c. remains stable.d. both a and be. none of the aboveAnswer: eDifficulty: Moderate10. Lead time is the gap betweena. when an order is placed and when it is received.b. when an order is received and when it is put away.c. when an order is received and when it is used.d. when an order is acknowledged and when it is received.e. none of the aboveAnswer: aDifficulty: Easy11. The coefficient of variation measuresa. the accuracy of the demand forecast.b. the size of the uncertainty relative to demand.c. the relevance of cycle inventory to demand.d. the relative certainty of the forecast.e. none of the aboveAnswer: bDifficulty: Moderate12. Which of the following is not a measure of product availability?a. customer fill rateb. product fill ratec. order fill rated. cycle service level(CSL)e. none of the aboveAnswer: aDifficulty: Moderate13. The fraction of orders that are filled from available inventory is thea. customer fill rate.b. product fill rate.c. order fill rate.d. cycle service level(CSL).e. none of the aboveAnswer: cDifficulty: Easy14. The fraction of product demand that is satisfied from product in inventory is thea. customer fill rate.b. product fill rate.c. order fill rate.d. cycle service level(CSL).e. none of the aboveAnswer: bDifficulty: Easy15. The fraction of replenishment cycles that end with all the customer demand beingmet is thea. customer fill rate.b. product fill rate.c. order fill rate.d. cycle service level(CSL).e. none of the aboveAnswer: dDifficulty: Easy16. If a customer order arrives when product is not availablea. a sale results.b. the retailer allocates product to the customer.c. a stockout results.d. the order is filled from safety inventory.e. none of the aboveAnswer: cDifficulty: Moderate17. The distinction between product fill rate and order fill rate isa. not significant in a single product situation.b. significant in a single product situation.c. not significant when a firm is selling multiple products.d. significant when a firm is selling multiple products.e. both a and dAnswer: aDifficulty: Moderate18. A replenishment policya. consists of decisions regarding when to reorder and how much to reorder.b. determines the cycle and safety inventories along with the fr and the CSL.c. may take several forms.d. All of the above are true.e. None of the above are true.Answer: dDifficulty: Moderate19. A company that tracks inventory and places an order fora lot size Q when theinventory declines to the reorder point (ROP) is usinga. continuous review.b. daily review.c. occasional review.d. periodic review.e. none of the aboveAnswer: aDifficulty: Easy20. A company that checks inventory status at regular periodic intervals and placesan order to raise the inventory level to a specified threshold is usinga. continuous review.b. daily review.c. occasional review.d. periodic review.e. none of the aboveAnswer: dDifficulty: Moderate21. Which of the following is correct?a. Average inventory = cycle inventory + safety inventoryb. Average inventory = cycle inventory - safety inventoryc. Average inventory = cycle inventory x safety inventoryd. Average inventory = cycle inventory / safety inventorye. none of the aboveAnswer: aDifficulty: Easy22. The expected shortage per replenishment cycle(ESC) isa. the units of demand that are not satisfied from inventory in stock in agiven replenishment cycle.b. the units of demand that are satisfied from inventory in stock in a givenreplenishment cycle.c. the average units of demand that are not satisfied from inventory in stockper replenishment cycle.d. the average units of demand that are satisfied from inventory in stock perreplenishment cycle.e. none of the aboveAnswer: cDifficulty: Moderate23. The product fill rate (fr)is thus given bya. fr = 1 –ESC/Q + (Q – ES C)/Q.b. fr = 1 –ESC/Q –(Q – ES C)/Q.c. fr = 1 + ESC/Q = (Q + ES C)/Q.d. fr = 1 –ESC/Q = (Q – ES C)/Q.e. none of the aboveAnswer: dDifficulty: Hard24. Given a lot size of Q (which is also the average demandin a replenishment cycle)a. the fraction of demand lost is thus ESC + Q.b. the fraction of demand lost is thus ESC –Q.c. the fraction of demand lost is thus ESC/Q.d. the fraction of demand lost is thus ESC x Q.e. none of the aboveAnswer: cDifficulty: Hard25. A shortage occurs in a replenishment cyclea. only if the demand during the lead time exceeds the ROP.b. only if the demand during the lead time is less than the ROP.c. only if the demand during the lead time exceeds the average demand.d. only if the demand during the lead time is less than the average demand.e. none of the aboveAnswer: aDifficulty: Moderate26. As the safety inventory is increaseda. fill rate increases and cycle service level decreases.b. fill rate decreases and cycle service level increases.c. both fill rate and cycle service level increase.d. both fill rate and cycle service level decrease.e. none of the aboveAnswer: cDifficulty: Moderate27. For the same safety inventory, an increase in lot sizea. decreases the fill rate but not the cycle service level.b. increases the fill rate but not the cycle service level.c. decreases both the fill rate and the cycle service level.d. increases both the fill rate and the cycle service level.e. none of the aboveAnswer: cDifficulty: Hard28. The expected shortage per replenishment cycle is shown asa. ESC = (1 + fr)Q.b. ESC = (1 –fr)Q.c. ESC = (1 + fr)/Q.d. ESC = (1 –fr)/Q.e. none of the aboveAnswer: bDifficulty: Hard29. The required safety inventorya. grows rapidly with a decrease in the desired product availability.b. grows rapidly with an increase in the desired product availability.c. decreases with an increase in the desired product availability.d. remains stable with an increase in the desired product availability.e. none of the aboveAnswer: bDifficulty: Moderate30. The required safety inventorya. increases with an increase in the lead time and thestandard deviation ofperiodic demand.b. decreases with an increase in the lead time and the standard deviation ofperiodic demand.c. remains stable with an increase in the lead time and the standarddeviation of periodic demand.d. increases with a decrease in the lead time and the standard deviation ofperiodic demand.e. none of the aboveAnswer: dDifficulty: Moderate31. A goal of any supply chain manager is toa. increase the level of safety inventory required in a way that does notadversely affect product availability.b. increase the level of safety inventory required regardless of the effect onproduct availability.c. reduce the level of safety inventory required regardless of the effect onproduct availability.d. reduce the level of safety inventory required in a way that does notadversely affect product availability.e. none of the aboveAnswer: dDifficulty: Moderate32. Which of the following is not an approach to reduce the level of safety inventoryrequired in a way that does not adversely affect product availability?a. Reduce the supplier lead time.b. Reduce the underlying uncertainty of demand.c. Reduce the cost of material coming from suppliers.d. All of the above are approaches.e. None of the above are approaches.Answer: cDifficulty: Hard33. Often, safety inventory calculations in practicea. do not include any measure of supply uncertainty, resulting in levels thatmay be higher than required.b. do not include any measure of supply uncertainty, resulting in levels thatmay be lower than required.c. include measures of supply uncertainty, resulting in levels that may behigher than required.d. include any measures of supply uncertainty, resulting in levels that maybe lower than required.e. None of the above are accurate.Answer: bDifficulty: Hard34. Aggregation reduces the standard deviation of demanda. only if demand across the regions being aggregated is perfectly positivelycorrelated.b. only if demand across the regions being aggregated is not perfectlypositively correlated.c. even if demand across the regions being aggregated is not perfectlypositively correlated.d. whenever demand across the regions being aggregated is not perfectlypositively correlated.e. All of the above are accurate.Answer: bDifficulty: Hard35. If the number of independent stocking locations decreases by a factor of n, theaverage safety inventory is expected toa. decrease by a factor of √n.b. decrease by a factor of n.c. increase by a factor of √n.d. increase by a factor of n.e. None of the above are accurate.Answer: aDifficulty: Moderate36. Which of the following is not a major disadvantage of aggregating all inventory inone location?a. Increase in forecast accuracy of customer demand.b. Increase in response time to customer order.c. Increase in transportation cost to customer.d. All of the above are disadvantages.e. All of the above are advantages.Answer: aDifficulty: Easy37. Which of the following is not a method by which a supply chain can extract thebenefits of aggregation without having to physically centralize all inventories inone location?a. information centralizationb. specializationc. product substitutiond. component differentiatione. postponementAnswer: dDifficulty: Moderation38. Which approach to aggregation requires an information system that allowsaccess to current inventory records from each location?a. information centralizationb. specializationc. product substitutiond. component commonalitye. postponementAnswer: aDifficulty: Easy39. Which approach to aggregation would stock the fast-moving items atdecentralized locations close to the customer and slow-moving items at acentralized location?a. information centralizationb. specializationc. product substitutiond. component commonalitye. postponementAnswer: bDifficulty: Moderate40. The use of one product to satisfy demand for a different product isa. information centralization.b. specialization.c. product substitution.d. component commonality.e. postponement.Answer: cDifficulty: Easy41. Which use of common components in a variety of products has been a veryeffective supply chain strategy to exploit aggregation and reduce componentinventories?a. information centralizationb. specializationc. product substitutiond. component commonalitye. postponementAnswer: aDifficulty: Easy42. The ability of a supply chain to delay product differentiation or customization untilcloser to the time the product is sold isa. information centralization.b. specialization.c. product substitution.d. component commonality.e. postponement.Answer: eDifficulty: Moderate43. Which approach to aggregation has the goal of moving product differentiation asclose to the pull phase of the supply chain as possible?a. information centralizationb. specializationc. product substitutiond. component commonalitye. postponementAnswer: eDifficulty: Moderate44. Periodic review policies for inventory replenishment require safety inventory tocover demand duringa. lead time only.b. the review interval only.c. both lead time and the review interval.d. neither lead time or the review interval.e. lead time when it exceeds the review interval.Answer: cDifficulty: Moderate45. Continuous review policies for inventory replenishment require safety inventory tocover demand duringa. lead time only.b. the review interval only.c. both lead time and the review interval.d. neither lead time or the review interval.e. lead time when it exceeds the review interval.Answer: aDifficulty: Moderate46. Periodic review policies requirea. more safety inventory than continuous review policies for the same levelof product availability.b. less safety inventory than continuous review policies for the same level ofproduct availability.c. the same safety inventory as continuous review policies for the samelevel of product availability.d. no more safety inventory than continuous review policies for the samelevel of product availability.e. none of the aboveAnswer: aDifficulty: Moderate47. All inventory between a given stage in the supply chain and the final customer iscalled thea. cycle inventory.b. demand inventory.c. echelon inventory.d. safety inventory.e. none of the aboveAnswer: cDifficulty: Hard48. A distributor should decide his safety inventory levels based ona. the level of safety inventory carried by all retailers supplied by him.b. the level of safety inventory carried by other distributors.c. the level of safety inventory carried by manufacturers supplying him.d. the level of cycle inventory carried by all retailers supplied by him.e. the level of cycle inventory carried by other distributors.Answer: aDifficulty: Hard49. As retailers decrease the level of safety inventory they carry, the distributor willhave toa. decrease his or her safety inventory.b. increase his or her safety inventory.c. keep his or her safety inventory at the same level.d. increase his or her cycle inventory.e. decrease his or her cycle inventory.Answer: bDifficulty: HardEssay/Problems1. Discuss the role of safety inventory in the supply chain and the trade-offsinvolved.Answer: The primary role of safety inventory is providing product availability forcustomers when demand and supply are uncertain. The trade-off that a supplychain manager must consider when planning safety inventory involve productavailability and inventory holding costs. On one hand, raising the level of safetyinventory increases product availability and thus the margin captured fromcustomer purchases. On the other hand, raising the level of safety inventoryincreases inventory holding costs. This issue is particularly significant inindustries where product life cycles are short and demand is very volatile.Carrying excessive inventory can help counter demand volatility but can reallyhurt if new products come on the market and demand for the product in inventory dries up. The inventory on hand then becomes worthless.In tod ay’s business environment, firms experience great pressure to improveproduct availability while increasing product variety through customization. As aresult, markets have become increasingly heterogeneous and demand forindividual products is very unstable and difficult to forecast. Both the increasedvariety and the increased pressure for availability push firmsto increase the level of safety inventory they hold.At the same time, product life cycles have shrunk. This increases the risk to firms of carrying too much inventory. Thus, a key to the success of any supply chain isto figure out ways to decrease the level of safety inventory carried without hurting the level of product availability.Difficulty: Hard2. Discuss the various measures of product availability.Answer: Product availability reflects a firm’s ability to fill a customer order out ofavailable inventory. A stockout results if a customer order arrives when product is not available. There are several ways to measure product availability. Allavailability measures are defined on average over a given time frame, which can range from hours to a year.Product fill rate (fr) is the fraction of product demand that is satisfied from product in inventory. It is equivalent to the probability that product demand is suppliedfrom available inventory.Order fill rate is the fraction of orders that are filled from available inventory. In amulti-product scenario, an order is filled from inventory only if all products in theorder can be supplied from the available inventory. Order fill rates tend to belower than product fill rates because all products must be in stock for an order to be filled.Cycle service level(CSL) is the fraction of replenishment cycles that end with all the customer demand being met. A replenishment cycle is the interval betweentwo successive replenishment deliveries. The CSL is equal to the probability ofnot having a stockout in a replenishment cycle. Observe that a CSL of 60 percent will typically result in a much higher fill rate.The distinction between product fill rate and order fill rate is not significant in asingle product situation. When a firm is selling multiple products, however, thisdifference may be significant. For example, if most orders include 10 or moredifferent products that are to be shipped, an out-of-stock situation of one product results in the order not being filled from stock. The firm in this case may have apoor order fill rate even though it has good product fill rates. Tracking order fillrates is important when customers place a high value on the entire order beingfilled simultaneously.Difficulty: Moderate3. Describe the two types of ordering policies and the impact each has on safetyinventory.Answer: A replenishment policy consists of decisions regarding when to reorderand how much to reorder. These decisions determine the cycle and safetyinventories along with the fr and the CSL. There are several forms thatreplenishment policies may take. We restrict attention to two instances:1. Continuous review: Inventory is continuously tracked and an order for a lotsize Q is placed when the inventory declines to the reorder point (ROP). The time between orders may fluctuate given variable demand. When using a continuousreview policy, a manager has to account only for the uncertainty of demandduring the lead time (L).2. Periodic review: Inventory status is checked at regular periodic intervals andan order is placed to raise the inventory level to a specified threshold. In thiscase, the time between orders is fixed. The size of each order, however, canfluctuate given variable demand. Periodic review replenishment policies requiremore safety inventory than continuous review policies for the same lead time andlevel of product availability, because the safety inventory has to cover fordemand uncertainty over the lead time and the review interval (L + T). Periodicreview policies are simpler to implement for retailers because they do not require that the retailer have the capability of continuously monitoring inventory. Giventhat higher uncertainty must be accounted for, periodic review policies will requirea higher level of safety inventory.Difficulty: Moderate4. Explain the impact of supplier lead time on safety。
supply-Chain-management(中文)
供应链管理供应链管理(Supply Chain Management ,简称SCM)目录[隐藏]∙ 1 供应链管理的定义与内容∙ 2 供应链管理方法∙ 3 为什么要实施供应链管理∙ 4 供应链管理与优化的方法∙ 5 供应链管理提出的时代背景[1]∙ 6 供应链管理中的关键问题∙7 供应链管理的发展趋势∙8 供应链管理理论的演进[2]∙9 供应链管理的载体[7]∙10 供应链管理的基本要求[7]∙11 供应链管理的方法∙12 供应链管理的步骤∙13 供应链管理面临的挑战∙14 供应链管理的四大支点o14.1 1、以顾客为中心o14.2 2、强调企业的核心竟争力o14.3 3、相互协作的双赢理念o14.4 4、优化信息流程∙15 供应链管理思想∙16 供应链管理的八大管理原理∙17 供应链管理的战略意义[7]∙18 实施供应链管理的对策[7]∙19 SCM在制造业的实施[1]∙20 供应链管理案例分析o20.1 案例一：中国石油电子商务[8]o20.2 案例二：丰田汽车精细流程[8]o20.3 案例三：戴尔公司[9]o20.4 案例四：德州仪器的供应链管理[10]∙21 相关链接∙22 参考文献[编辑]供应链管理的定义与内容供应链管理(Supply Chain Management ,简称SCM)：就是指在满足一定的客户服务水平的条件下，为了使整个供应链系统成本达到最小而把供应商、制造商、仓库、配送中心和渠道商等有效地组织在一起来进行的产品制造、转运、分销及销售的管理方法。
供应链管理包括计划、采购、制造、配送、退货五大基本内容。
计划：这是SCM的策略性部分。
你需要有一个策略来管理所有的资源，以满足客户对你的产品的需求。
好的计划是建立一系列的方法监控供应链，使它能够有效、低成本地为顾客递送高质量和高价值的产品或服务。
采购：选择能为你的产品和服务提供货品和服务的供应商，和供应商建立一套定价、配送和付款流程并创造方法监控和改善管理，并把对供应商提供的货品和服务的管理流程结合起来，包括提货、核实货单、转送货物到你的制造部门并批准对供应商的付款等。
供应链管理课后习题答案
第一章课后习题答案一、判断题SCP:分别指市场结构(Structure )，市场行为(Conduct)，市场绩效(Performance)。
哈佛学派认为. 市场结构(Structure )，市场行为(Conduct)，市场绩效(Performance)之间存在着必然的联系.並建立了SCP分析框架來分析行业与企业的发展情況P5三、简答题1答：分析汽车供应链结构简图：（1）汽车行业全球供应链的形成与发展在激烈的市场竞争中，汽车制造业是一个复杂程度和集成度非常高的行业，汽车制造业需要懂得合作与共享，并且在不同的环节有着不同的侧重点，满足不同客户需求，不断完善汽车产业全球价值链的分工体系，才能在激烈的市场中成为佼佼者。
（2）汽车供应链的利益分配及影响因素“微笑曲线”价值分布汽车供应链中有不同的侧重点，对于整车装配、非关键零部件的生产加工、流通环节等均为低附加值环节；对于产品设计与研发、品牌推广和关键零部件的生产和采购等则划分为高附加值环节，汽车企业应重视“微笑曲线”所带来的价值，针对不同的区域有不同的侧重点，有利于节省成本，提高质量。
特征：多种生产策略组合；典型的生产滚动计划；整车厂的生产计划实施，驱动整个供应链；普遍注重精益的物流运作；物流业务外包成主流；严格的零部件供应商准入机制与供应商分级管理；基于框架协议下的全球化采购；汽车售后供应链体系备受关注。
汽车产业发展新趋势汽车产业发展呈现规模化、集群化发展趋势，产业集群化使产业链纵向延伸发展，同时提高了与相关产业进行横向竞争与合作的效率2、答：分析服装供应链结构简图：先分析服装供应链的工艺流程，再分析服装供应链的类型。
服装供应链有四种主要类型的企业：（1）单纯的生产加工企业（2）自有品牌的“虚拟企业”（3）供、产、销一体化的企业（4）服装贸易公司特征：（1）服装产品的生命周期短(2)服装消费需求变动性大(3)服装消费需求的可预测性低(4)服装购买的冲动性高(5)服装产品被模仿的情况严重P14-15发展趋势：（1）产品个性化需求增大消费能力、消费心理与社会的进步三个因素，共同催生了个性化定制这个基于人自身表达诉求的概念。
Supply Chain Management
Supply Chain ManagementSupply chain management is a critical component of any business, ensuring that products and services reach customers in a timely and cost-effective manner. It involves a complex network of activities, including sourcing raw materials, manufacturing, inventory management, transportation, and distribution. In this response, we will explore the various aspects of supply chain management,including its importance, the challenges, and potential solutions.The Importance of Supply Chain ManagementSupply chain management is essential for businesses to remain competitive in today's global market. It helps companies to optimize their operations, reduce costs, and improve customer satisfaction. By effectively managing the flow of goods and information, businesses can ensure that they meet customer demands while minimizing waste and inefficiencies.One of the key benefits of supply chain management is the ability tostreamline operations. By analyzing data and identifying patterns, businesses can make informed decisions about production, inventory levels, and distribution. This can lead to reduced lead times, lower inventory costs, and improved customer service.Challenges in Supply Chain ManagementDespite its many benefits, supply chain management also presents several challenges. One of the most significant is the complexity of the supply chain itself. With multiple stakeholders, each with their own goals and priorities, coordinating activities can be difficult. This can lead to delays, increased costs, and reduced customer satisfaction.Another challenge is the unpredictability of the market. Changes in consumer demand, economic conditions, and geopolitical events can all impact the supplychain. Businesses must be agile and adaptable to respond to these changes and maintain a competitive edge.Potential Solutions for Supply Chain ManagementTo overcome these challenges, businesses can implement various strategies and technologies. One approach is to adopt a more collaborative mindset, workingclosely with suppliers, manufacturers, and distributors to align their goals and share information. This can help to improve communication, reduce errors, and increase efficiency.Another solution is to invest in technology that can help to automate and optimize supply chain processes. For example, advanced analytics can be used to predict demand and to optimize inventory levels. Blockchain technology can also be used to improve transparency and traceability, helping to ensure the quality and integrity of products.In addition, businesses can focus on building resilience into their supply chains. This can involve diversifying suppliers, investing in contingency planning, and developing strong relationships with key stakeholders. By building a more robust supply chain, businesses can better withstand disruptions and maintaintheir operations during challenging times.The Human Element in Supply Chain ManagementWhile technology and automation play a significant role in supply chain management, the human element is also crucial. People are responsible for making decisions, solving problems, and building relationships with suppliers and customers. By fostering a culture of collaboration, innovation, and continuous improvement, businesses can create a more agile and responsive supply chain.Emotional intelligence is another important aspect of supply chain management. By understanding and managing their own emotions and those of others, supply chain professionals can build stronger relationships, negotiate more effectively, andnavigate complex situations. This can lead to better outcomes for the business and its stakeholders.The Future of Supply Chain ManagementAs technology continues to advance, the future of supply chain management is likely to be increasingly digital and automated. Artificial intelligence, machine learning, and the Internet of Things (IoT) are all poised to transform the way businesses manage their supply chains. These technologies can help to optimize processes, improve decision-making, and enhance visibility across the entiresupply chain.However, it is important to remember that technology is not a panacea. Human expertise, creativity, and emotional intelligence will continue to be essential components of supply chain management. By combining the best of both worlds, businesses can create supply chains that are not only efficient and cost-effective, but also adaptable, resilient, and responsive to the needs of customers and stakeholders.In conclusion, supply chain management is a complex and multifaceteddiscipline that plays a critical role in the success of businesses. By understanding the importance of supply chain management, addressing its challenges, and embracing potential solutions, businesses can create supply chains that are both competitive and sustainable. The future of supply chain management is likely to be shaped by technology, but the human element will remain essential inensuring its success.。
supply chain
If the retailer receives 100 boxes of shirts (and each box contains 24 shirts) it has to fold 2,400 shirts! If the average store employee can fold 60 shirts per hour, this represents 40 hours (or 1 week) of labor. At $15 per hour, the cost to do this is $600. Of course, the consumer 由于供应链具备为企业极大 ultimately pays 降低成本和增加收益的潜能 for this as it is part of the shirt’s cost, however it is an unnecessary cost 。 as the 而成为企业新的竞争领域 supplier can be told to re-fold at 8 inches. The new competitive frontier is across supply chains as they have the potential to significantly reduce costs and increase profitability for companies.
使---最优化 （完善） Furthermore, software for optimization
has been embraced by all of these parties, as it offers mathematical 最佳 modeling solutions to supply chain 的 problems. For example, a software package might provide an optimum delivery route of the products, from supplier to manufacture. In conclusion, the goal is to optimize efficiency through supply chain management.
供应链管理_第三版_Unit11_习题与答案
Chapter 11Managing Uncertainty in the Supply Chain: Safety InventoryTrue/False1. Safety inventory is inventory carried for the purpose of satisfying demand thatexceeds the amount forecasted for a given period.Answer: TrueDifficulty: Moderate2. Raising the level of safety inventory increases product availability and thus themargin captured from customer purchases.Answer: TrueDifficulty: Moderate3. Carrying excessive inventory can help counter demand volatility when newproducts come on the market.Answer: FalseDifficulty: Moderate4. The appropriate level of safety inventory is determined by the uncertainty of bothdemand and supply and the desired level of cycle inventory.Answer: FalseDifficulty: Moderate5. As the uncertainty of supply or demand grows, the required level of safetyinventories increases.Answer: TrueDifficulty: Moderate6. As the desired level of product availability increases, the required level of safetyinventory decreases.Answer: FalseDifficulty: Easy7. Lead time is the gap between when an order is placed and when it is received.Answer: TrueDifficulty: Easy8. The coefficient of variation measures the size of the relative certainty of cycleinventory.Answer: FalseDifficulty: Easy9. Product availability reflects a firm’s ability to fill a customer order out of availableinventory.Answer: TrueDifficulty: Moderate10. Order fill rate is the fraction of product demand that is satisfied from product ininventory.Answer: FalseDifficulty: Moderate11. Product fill rate is the fraction of product demand that is satisfied from product ininventory.Answer: TrueDifficulty: Moderate12. The distinction between product fill rate and order fill rate is significant in a singleproduct situation.Answer: FalseDifficulty: Hard13. Tracking order fill rates is important when customers place a high value on theentire order being filled simultaneously.Answer: TrueDifficulty: Easy14. With continuous review, inventory is continuously tracked and an order for a lotsize Q is placed at regular intervals of time.Answer: FalseDifficulty: Hard15. With periodic review, inventory status is checked at regular intervals and an orderis placed to raise the inventory level to a specified threshold.Answer: TrueDifficulty: Hard16. The expected shortage per replenishment cycle(ESC) is the average units ofdemand that are satisfied from inventory in stock per replenishment cycle.Answer: FalseDifficulty: Hard17. A shortage occurs in a replenishment cycle only if the demand during the leadtime exceeds the ROP.Answer: TrueDifficulty: Moderate18. The required safety inventory grows rapidly with a decrease in the desiredproduct availability.Answer: FalseDifficulty: Easy19. In most supply chains, the key to reducing the underlying forecast uncertainty isto link all forecasts throughout the supply chain to customer demand data.Answer: TrueDifficulty: Moderate20. A reduction in supply can help dramatically reduce safety inventory requiredwithout hurting product availability.Answer: FalseDifficulty: Moderate21. Aggregation reduces the standard deviation of demand only if demand acrossthe regions being aggregated is not perfectly positively correlated.Answer: TrueDifficulty: Moderate22. The lower the coefficient of variation of an item, the greater the reduction insafety inventories as a result of centralization.Answer: FalseDifficulty: Hard23. Manufacturer-driven substitution increases overall profitability for themanufacturer by allowing some aggregation of demand, which reduces theinventory requirements for the same level of availability.Answer: TrueDifficulty: Moderate24. Periodic review policies require more safety inventory than continuous reviewpolicies for the same level of product availability.Answer: TrueDifficulty: Easy25. When using a continuous review policy, a manager has to account for theuncertainty of demand during the lead time and the review interval.Answer: FalseDifficulty: EasyEssay/Problems1. Discuss the role of safety inventory in the supply chain and the trade-offsinvolved.Answer: The primary role of safety inventory is providing product availability for customers when demand and supply are uncertain. The trade-off that a supply chain manager must consider when planning safety inventory involve productavailability and inventory holding costs. On one hand, raising the level of safetyinventory increases product availability and thus the margin captured fromcustomer purchases. On the other hand, raising the level of safety inventoryincreases inventory holding costs. This issue is particularly significant inindustries where product life cycles are short and demand is very volatile.Carrying excessive inventory can help counter demand volatility but can reallyhurt if new products come on the market and demand for the product in inventory dries up. The inventory on hand then becomes worthless.In today’s business environment, firms experience great pressure to improveproduct availability while increasing product variety through customization. As aresult, markets have become increasingly heterogeneous and demand forindividual products is very unstable and difficult to forecast. Both the increasedvariety and the increased pressure for availability push firms to increase the level of safety inventory they hold.At the same time, product life cycles have shrunk. This increases the risk to firms of carrying too much inventory. Thus, a key to the success of any supply chain is to figure out ways to decrease the level of safety inventory carried without hurting the level of product availability.Difficulty: Hard答：主要作用是提供安全库存产品供应顾客时，供给和需求是不确定的。
1.supply chain management供应链管理
carry on:经营，从事 coordinated：协调
练习：
项目管理将工商管理的所有功Байду номын сангаас整合于一 个项目小组以达到协调管理的目的。
cycle time
Text 1 Supply Chain Management
【Para 4】The Goal of Supply Chain Management（供应链管理的目标）
Since World War II, with the development of the operations research and management science, there has been an increasing interest in supply chain planning and management. Working together, supply chain planners/managers and all members of the front, middle and back end of the supply chain may enhance revenue, cost control, and asset utilization as well as customer satisfaction.
Text 1 Supply Chain Management
Optimization promises to improve a company's supply chain performance in a variety of areas： Reducing supply costs Improving product margins Increasing manufacturing throughput Better return on assets