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《生产运作管理作业一》答案

《生产运作管理作业一》答案
《生产运作管理作业一》答案

《生产运作管理作业一》答案

《生产管理》作业答卷

第一章

思考与练习题:P24,1,2,6

1、试述生产系统的基本结构。

答:完成输入到输出的转化过程需要一个物质基础,这就是生产运作系统或简称为生产系统。生产系统是由人和机器构成,能将一定输入转化为特定输出的有机整体,使转化过程具有增值性是生产系统的基本功能。

2、生产管理的基本内容包括哪些,

答:生产运作管理是对企业生产服务活动进行计划、组织和控制的总称,包括生产系统设计与运行管理两个方面。

6、服务业的运作管理与制造业的运作管理有哪些不同之处,

答:服务业主要是以提供服务为主与顾客打交道是服务业与制造业的最主要的区别: (1)服务型生产效率难以测量,因为服务型生产的输出是无形的,制造业企业可以统计每天生产的产品数量;

(2)服务型生产的质量标准难以建立,服务质量难以评价,无形产品无法触摸、无法测量,因此没有办法建立一个标准的质量体系;

(3)顾客参与服务型生产是一个重要的内容,有时顾客就是生产系统的一个组成部分,使得生产五

这种参与往往导致效率降低; 福过程难以控制,因此,

(4)制造型生产可以通过增加或者将少库存来处理由于需求变化引起的波动,但是服务型生产不能通过库存来调节,服务型通常的措施是尽量使需求平衡;

服务型的设计更侧重于消费者的感知性要素。

案例题:P26

《F汽车有限公司的供应链运作管理》

1、从运作管理的角度看,F公司目前的运作管理模式是如何实现生产运作管理目标的,

答:(1)业务外包战略(2)全球性资源优化配置(3)供应商管理库存的管理方式(4)战略联盟的合作意识。

2、F公司的运作管理模式还需要从哪些方面做进一步的改进,

答:可以从通过供应链系统、建立战略合作伙伴关系、设立中间仓库这些方面

做进一步的改进。

第二章

练习题:P47-48,2,4,6,10,11

2、运作战略与企业总体战略的区别与联系是什么,

答:运作战略是指企业在其经营战略的总体规划下,决定选择什么样的生产系统,确定什么样的管理方式来达到企业的整体经营目标、对运作系统的整体谋划。现在讲的运作战略不仅包括企业的生产管理战略,也包括与生产或服务配套的物流运作战略。

具体的说运作战略就是要决定企业在产品/服务、生产过程、生产方法、制造

资源、质量、成本、生产周期、生产计划、企业物流模式等方面的行动方案的选择。

企业总体战略是全局性的战略,是从整个企业所处的市场环境、社会文化背景及政治局势出发的包括企业所有职能部门在内的实现企业远景规划的方案及实施策略的长期计划。运作战略是职能战略,它制定出实现企业战略的产品方案,确定构造符合企业战略的生产运作系统及实现企业战略的一系列决策规划内容和程序,是

企业总体战略的一个部分。运作是讲某一部门的连续。企业战略是整个公司的。联系是没有运作管理就没有企业总体。

4、运作战略的制定应包含哪些具体内容,

Subsequently, the Anhui Army military Special Branch, in Shanghai's Central Intelligence Organization and the Communist party organization in Western Zhejiang Province, sent party backbone, respectively, went to Wu Jiangyan opened the Tomb, Tomb of heroic people, under the leadership of the Communist Party, fear no sacrifice and persevering, goal of the anti-Japanese revolutionary struggle. (A) stationed in Taoyuan area (Tomb of) 1, the new army of the Communist Party of China underground organization in September 1938, the CPC Zhuang Shaozhen (Zhuang Zhen, Nanxun people) by the Deputy Director of the political Department of the army on Deng Zihui's dispatch, operating from Jing County, Anhui Province, the Lake reached the Tomb, its tasks are: looking for reliable object, introduce them to the new, to expand the new team. Zhuang Shaozhen KMT-CPC cooperation as an opportunity, after classmates Yao Bi (Nanxun people, Ren Zhuxi force staff Director), introduced into the Kuomintang government political team, and as a political leader. He used this opportunity to invite progressive youth Hong Haiquan form a

political team, at this point, the County Government has just been established, local school, unemployed youth are more quickly absorbed sheng, zhenze, Miaogang, Nanxun, huzhou, more than 20 more than

required-Japanese youth. In order to raise the level of political players and the ability to work, Zhuang Shaozhen Xu Temple, is for the

establishment of "youth ... Political activities will soon attract the attention of the Kuomintang. Is early Zhuang Shaozhen indicating Hong Haiquan to scoop the first elementary school, teacher's identity as a cover, carry out the party's work. However, County Director of education comes into action. To

答:运作战略的制定应包含:

(1)产品或服务的选择---对象决策。

(2)厂址选择---企业生产、服务网络的布局决策。

(3)产品、服务—流程矩阵-----生产类型和流程决策。

(4)物流系统规划与布置-----过程组织决策。

6、何为运作战略矩阵,它由哪几部分构成,请试着选择一个企业,并用运作战

略矩阵将其目前采用的运作战略描述出来。

答:运作战略矩阵是指企业在其经营战略的规划下,决定选择什么样的生产系统、确定什么样的管理方式来达到企业的整体经营目标、对运作系统的整体谋划。

它由生产过程、方法、制造资源、质量、成本、生产周期、生产计划、企业物流等构成。

10、已知5个相同的工件要经4道工序加工,其工序单件时间见表2-3。

表2-3 工序时间

工序号 1 2 3 4

工序单件时间/分 8 2 4 5 求:(1)在顺序移动方式下,这批零件的加工周期。

答:T=5×(8+2+4+5),95

(2)在平行移动方式下,这批零件的加工周期。

答:T=(8+2+4+5)+(5-1)×8,51

(3)在平行移动方式下的平行系数。

答:T,1-51/95,0.46

11、已知4个工件要经5道工序加工,其工序单件时间见表2-4。

表2-4 工序时间

工序号 1 2 3 4 5

工序单件时间/分 8 4 10 5 9

工件之间的转送实践为2分。求:

(1)在平行移动方式下,这批零件的加工周期。

答:T=(8+4+10+5+9)+(5-1)×10,76

(2)在平行顺序移动方式下,这批零件的加工周期。

答:T=4×(8+4+10+5+9)+(4-1)×(4+4+5+5),198

第三章

思考题:P70,2,4,6,8,9

2、讨论产品开发在企业战略中的重要地位。

答:产品开发战略是企业对市场机遇与挑战、内部资源能力的优势和劣势所进行的全面的、前瞻性的思考和认识,也是做出的深思熟虑的选择和决定。产品开发战略能避免企业临时地、随意地、盲目地开发和进入一些没有市场价值的产品,而忽视了那些真正能够提升市场竞争力的产品机会。产品开发战略是企业产品开发的军事路线图,指引产品开发的方向和路标。

4、研究产品开发过程对产品成本的影响,并讨论科学和合理地组织产品开发过程的重要性。

答:产品设计在设计过程中难以考虑到顾客需求制造工程、质量控制等约束因素,容易造成设计和制造脱节,所以设计的产品可造性可装配性比较差。使得产品开发过程变成设计、加工、实验修改等多重循环,从而造成设计改动量大、产品开发周期长、产品成本高。

6、解释基础研究与应用研究的含义。

答:所谓基础研究,主要是指为了认识的目的而获取自然规律、原理的新知识

所进行的创造性研究;所谓应用基础研究,主要是指为了实现某一特定的或具体的应用目的或目标而获取应用原理、规律的新知识所进行的独创性研究。两者的共同点在于:都是获取有关规律、原理的新知识,都进行创造性或独创性研究。两者的区别主要是:前者主要以认识为目的的而无特定的或具体的应用目的,因而强调一般Subsequently, the Anhui Army military Special Branch, in Shanghai's Central Intelligence Organization and the Communist party organization

in Western Zhejiang Province, sent party backbone, respectively, went to Wu Jiangyan opened the Tomb, Tomb of heroic people, under the leadership of the Communist Party, fear no sacrifice and persevering, goal of the anti-Japanese revolutionary struggle. (A) stationed in Taoyuan area (Tomb of) 1, the new army of the Communist Party of China underground organization in September 1938, the CPC Zhuang Shaozhen (Zhuang Zhen, Nanxun people) by the Deputy Director of the political Department of the army on Deng Zihui's dispatch, operating from Jing County, Anhui Province, the Lake reached the Tomb, its tasks are: looking for reliable object, introduce them to the new, to expand the new team. Zhuang Shaozhen KMT-CPC cooperation as an opportunity, after classmates Yao Bi (Nanxun people, Ren Zhuxi force staff Director), introduced into the Kuomintang government political team, and as a political leader. He used this opportunity to invite progressive youth Hong Haiquan form a

political team, at this point, the County Government has just been established, local school, unemployed youth are more quickly absorbed

sheng, zhenze, Miaogang, Nanxun, huzhou, more than 20 more than

required-Japanese youth. In order to raise the level of political players and the ability to work, Zhuang Shaozhen Xu Temple, is for the establishment of "youth ... Political activities will soon attract the attention of the Kuomintang. Is early Zhuang Shaozhen indicating Hong Haiquan to scoop the first elementary school, teacher's identity as a cover, carry out the party's work. However, County Director of education comes into action. To

的创造性;后者则主要以特定的或具体的实际应用为目的,因而强调其独创

性。 8、什么是并行工程,其主要思想和特点是什么,

答:并行工程是对产品及其相关过程,包括制造过程和支持过程,进行并行、

一体化设计的一种系统化方法。

主要思想:1)设计时间同时考虑产品生命周期的所有因素,作为设计结果,同

时产生产品设计规格和相应的制造工艺及生产准备文件。2)在产品设计过程中各活动并行交叉进行。3)不同领域技术人员的全面参与与协同工作,实现产品生命周期中所有因素在设计阶段的集成,实现技术、资源、过程在设计中的集成。4)高效率的组织结构。

特点:1)产品设计的个阶段是一个梯阶、渐进的连续过程,概念设计、初步设计、详细设计等设计阶段的划分只标志着产品和设计的粒度和清晰度。2)产品设计过程和产品信息模型经历着从定性到定量、从迷糊到清晰渐进演化的过程。3)产品设计过程和工艺设计过程不是顺序进行,而是并行展开,同时展开。

9、比较分析并行工程与传统的产品开发组织的区别。

答:传统的企业产品开发一直采用串行的方法,即从需求分析、产品结构设

计、工艺设计一直到加工制造和装配是一步步在各个部门之间顺序进行的。串行的

产品开发过程存在着许多弊端,首要的问题是以部门为基础的组织机构严重地妨碍了产品开发的速度和质量。难以考虑到顾客需求、制造工程、质量控制等约束因素,易造成设计和制造的脱节,它能够并行的集成设计、制造、市场、服务等资源。并行工程是一种强调个阶段领域专家共同参加的系统化产品设计方法,其目的在于将产品的设计和产品的可制造性、可维护性、质量控制等问题同时加以考虑,以减少产品早期设计阶段的盲目性,尽可能早的避免因产品设计阶段不合理因素对产品生命周期后续阶段的影响,缩短研制周期。案例题

案例1

1、从FH公司MSTP跨职能项目组的工作方式看,成功实施并行工程的核心因素是什么,

2、如何规避跨职能协作模式带来的潜在风险,

答 1:核心因素:改善开发项目管理。

2:要有一个集成化产品开发团队,然后有很明确的不同级层次;有充分的授权;有组长负责制;团队成员的日常工作来自团队的领导;有团队精神,项目经理有最终决策权;团体的信息能及时共享;有规范团队的协同工作。

案例2

1、你的建议是什么,

答:建议:首先是玩具公司设计部门设计的产品的需求度和受欢迎度需要做一个市场调查,然后根据实际情况来确认是否需要批量生产;其次如果有需要的话,要严格设计好产品的加工周期,确保50000个玩具能在春节前上市,运用合理的设计方式来确定合理的加工方式。如果可行的话,就可以由自己的公司制造蕾蕾娃娃。

把工作转包给玩具厂家,LSJ公司的采购成本是80元的话,比自己公司生产贵10多元,但是自己公司还会投入前期的设备改造,就需看这批改造的费用多少,从而判断产品的利润大小来觉得是否外包。其二还得考虑外包在产品的整个加工期

间的可能出现的问题能否可以得到及时解决。综合考虑以上方面的因素来决定是

否外包还是自己生产。

第五章

练习题:P132-134,2,3,6,7,8

2、什么是代表产品,什么是假定产品,如何进行生产能力和生产任务之间的平衡,

答:代表产品:在结构与工艺相似的多品种的系类产品中,选择产量与劳动产量

乘积最大的产品作为代表产品,将其他产品按劳动量换算为用代表产品表示的数量。

假定产品:实际上并不存在的产品,只是为了结构与工艺差异大的产品有一个

统一的计量单位而假定的。

计算生产能力的目的就是为了衡量生产计划的可行性,因此要进行生产能力与

生产任务的平衡。如Subsequently, the Anhui Army military Special Branch, in Shanghai's Central Intelligence Organization and the Communist party organization in Western Zhejiang Province, sent party backbone, respectively, went to Wu Jiangyan opened the Tomb, Tomb of heroic people, under the leadership of the Communist Party, fear no sacrifice and persevering, goal of the anti-Japanese revolutionary struggle. (A) stationed in Taoyuan area (Tomb of) 1, the new army of the Communist Party of China underground organization in September 1938, the CPC Zhuang Shaozhen (Zhuang Zhen, Nanxun people) by the Deputy Director of the political Department of the army on Deng Zihui's dispatch, operating from Jing County, Anhui Province, the Lake reached the Tomb, its tasks are: looking for reliable object, introduce them to the new, to expand

the new team. Zhuang Shaozhen KMT-CPC cooperation as an opportunity, after classmates Yao Bi (Nanxun people, Ren Zhuxi force staff Director), introduced into the Kuomintang government political team, and as a political leader. He used this opportunity to invite progressive youth Hong Haiquan form a political team, at this point, the County Government has just been established, local school, unemployed youth are more quickly absorbed sheng, zhenze, Miaogang, Nanxun, huzhou, more than 20 more than required-Japanese youth. In order to raise the level of political players and the ability to work, Zhuang Shaozhen Xu Temple, is for the establishment of "youth ... Political activities will soon attract the attention of the Kuomintang. Is early Zhuang Shaozhen indicating Hong Haiquan to scoop the first elementary school, teacher's identity as a cover, carry out the party's work. However, County

Director of education comes into action. To

果生产能力满足不了计划任务的要求,应采取一定的措施扩大生产能力,如果生产能力大于计划任务,则应设法利用生产能力,以免造成无端的浪费。有了平衡分析,计划人员就可以做到心中有数,采取措施安排好生产能力。对于能力不足的时段,要提出相应的需求计划,落实生产单位所能提供的能力,对于能力有富于的时段,要尽可能加以利用。

3、处理费均匀需求有哪几种策略,

答:第一种是改变需求的方法。1)通过改变价格转移需求2)推迟交货

)改变劳动力数量2)忙时加班加点3)利用半时工人4)利用库第二种是调整能

力的方法。1

存调节5)转包6)改变“自制还是外购”决策。

6、表5-17为某医院急救室3个月的实际需求数据:

表5-17 1~3月份的实际需求数据

月份 1 2 3

实际需求 721 816 671

若第1个月的初始预测值为SA1=706,平滑系数a=0.2,试计算第2~4月的一次指数平滑预测值。

答:F=706+0.2(721-706)=709 2

F=709+0.2(816-709)=730.4 3

F=730.4+0.2(671-730.4)=718.52 4

7、表5-18所示为某种型号赛车轮胎的销售记录:

表5-18 赛车轮胎某年度销售统计

月份 1 2 3 4 5 6 7 8 9 10 11 12

销售量 96 106 100 100 100 98 99 94 106 105 102 99 求:(1)计算当初始预测值X0=100,a=0.2时的一次指数平滑预测值。

(2)计算当初始预测值X0=100,a=0.3时的一次指数平滑预测值。

(3)按12个月的数字计算平均绝对偏差MAE。

答:各月份的一次指数平滑预测值及12个月平均绝对偏差MAE的如下表所示: X0=100,a=0.2 X0=100,a=0.3

月份实际销售量

预测值误差预测值误差 MAE MAE

1 96 98.8 97.

2 -1.2 -2.2

2 106 100.96 98.96 7.04 5.04

3 100 100.67 99.16 0.8

4 -0.67

4 100 100.46 99.32 0.68 -0.46

5 100 100.32 99.45 0.55 -0.32

6 98 99.62 99.16 1.16 -1.62 2.49 2.14

7 99 99.43 99.12 -1.12 -0.43

8 94 98.8 98.09 -4.09 -4.8

9 106 100.96 99.67 6.33 5.04

10 105 102.17 100.73 4.27 2.83

11 102 102.11 100.98 1.02 -0.11

12 99 101.17 100.58 -1.58 -2.17

8、某公司的管理人员已知今后6个月的需求预测及相关生产费用(表5-19)。Subsequently, the Anhui Army military Special Branch, in Shanghai's Central Intelligence Organization and the Communist party organization

in Western Zhejiang Province, sent party backbone, respectively, went to Wu Jiangyan opened the Tomb, Tomb of heroic people, under the leadership of the Communist Party, fear no sacrifice and persevering, goal of the anti-Japanese revolutionary struggle. (A) stationed in Taoyuan area (Tomb of) 1, the new army of the Communist Party of China underground organization in September 1938, the CPC Zhuang Shaozhen (Zhuang Zhen, Nanxun people) by the Deputy Director of the political Department of the army on Deng Zihui's dispatch, operating from Jing County, Anhui Province, the Lake reached the Tomb, its tasks are: looking for reliable object, introduce them to the new, to expand the new team. Zhuang Shaozhen KMT-CPC cooperation as an opportunity, after classmates Yao Bi (Nanxun people, Ren Zhuxi force staff Director), introduced into the Kuomintang government political team, and as a political leader. He used this opportunity to invite progressive youth Hong Haiquan form a

political team, at this point, the County Government has just been established, local school, unemployed youth are more quickly absorbed sheng, zhenze, Miaogang, Nanxun, huzhou, more than 20 more than

required-Japanese youth. In order to raise the level of political players and the ability to work, Zhuang Shaozhen Xu Temple, is for the establishment of "youth ... Political activities will soon attract the attention of the Kuomintang. Is early Zhuang Shaozhen indicating Hong Haiquan to scoop the first elementary school, teacher's identity as a cover, carry out the party's work. However, County Director of education comes into action. To

表5-19 某产品计划编制数据

总计周期/月 1 2 3 4 5 6

预测/件 200 200 300 400 500 200 1800

成本信息:

生产

正常时间=2元/件

加班时间=3元/件

转包合同=6元/件

库存=1元/(件*月)(按平均库存水平考虑)

缺货=5元/(件*月)

现在他们想制定一个总体计划,现有两种思路:

(1)基本思想是用库存吸收需求波动,在正常工作日内按稳定的出产率生产产品,但是允许缺货。他们希望初始库存为零。该公司现有15名工人。

(2)管理人员知道有一个工人将要退休,管理人员不想再招工,而是采用加班的方法弥补生产不足。正常出货量变成280件/月,最大加班产量是40件/月。

请比较两种计划方案,为其选择一个合理的总体计划,计算出总生产费用。

答:根据题意,作如下补充假设:1.两种方案的目标产量相同。库存条件相同且允许缺货。使其总费用具有可比性;2.采用表格计算如下:

通过计算,方案1要比方案二节约费用,60,因此推荐方案一作为最终方案。其总费用为:4200元

案例题:P134-135

《APS在H公司订单管理中的应用》

问题:在大多数企业中,制定计划与更新计划的周期都比较长,有时会大大超过实际的生产周期。另外,由于市场需求是经常变动的,企业要想减少预测的不准确性,只有努力缩短计划制定和更新周期(理想状态是零计划周期)。这样就在两者间出现了矛盾。你认为APS能够解决这对矛盾吗,

答:不一定。

企业计划不论是长期计划和短期计划说到底就是一个企业的信息的管理。需求管理前在收集市场信息的基础上有很多工作,如顾客需求,订单,交货期,内部和外部需求等。

由于有不同生产类型的企业,所以就有不同的需求管理,这样,APS就不一定能够解决问题了。在MTS环境下,顾客实际购买企业的在库产品,客户服务水平根

据产品缺货与否来衡量,需求管理活动的核心是通过优化产品的库存来降低缺货率,提高服务水平,从而提高客户满意度,而服务满意度就会受周期的影响,在服务行业的话,销售的是无形的产品—服务,它具有不可预测性,也就无法指定计划,它的销售是和实际产品同时进行的,因此它的计划制定就是和实际销售是一步到位的,不存在更新这样的概念,所以就不会出现两者的不同时而去更改计划了Subsequently, the Anhui Army military Special Branch, in Shanghai's Central Intelligence Organization and the Communist party organization in Western Zhejiang Province, sent party backbone, respectively, went to Wu Jiangyan opened the Tomb, Tomb of heroic people, under the leadership of the Communist Party, fear no sacrifice and persevering, goal of the anti-Japanese revolutionary struggle. (A) stationed in Taoyuan area (Tomb of) 1, the new army of the Communist Party of China underground organization in September 1938, the CPC Zhuang Shaozhen (Zhuang Zhen, Nanxun people) by the Deputy Director of the political Department of the army on Deng Zihui's dispatch, operating from Jing County, Anhui Province, the Lake reached the Tomb, its tasks are: looking for reliable object, introduce them to the new, to expand the new team. Zhuang Shaozhen KMT-CPC cooperation as an opportunity, after classmates Yao Bi (Nanxun people, Ren Zhuxi force staff Director), introduced into the Kuomintang government political team, and as a political leader. He used this opportunity to invite progressive youth Hong Haiquan form a

political team, at this point, the County Government has just been established, local school, unemployed youth are more quickly absorbed sheng, zhenze, Miaogang, Nanxun, huzhou, more than 20 more than

required-Japanese youth. In order to raise the level of political players and the ability to work, Zhuang Shaozhen Xu Temple, is for the establishment of "youth ... Political activities will soon attract the attention of the Kuomintang. Is early Zhuang Shaozhen indicating Hong Haiquan to scoop the first elementary school, teacher's identity as a cover, carry out the party's work. However, County Director of education comes into action. To

第六章

案例题:P164-168

《神州商店的库存控制》问题:

1、由表6-12计算出的保存费用,明显低于用经济订购批量模型计算出的保存费用,为什么,

答:根据经济订货批量算出的保存费用为:(448/2+40)×400=105600元,而根据表6-11计算的每辆摩托车保存费用为400/12=33.3元,期末总库存为1580辆,总保存成本为400×12×1580=52614元。

产生这种差距的原因是:

1)根据经济订货批量计算出的经济订货批量没有考虑到需求的变化而是假设需求率不变,而保存费是在经济订货批量基础上计算出来的,必定产生巨大误差。

2)徐先生在表6-12中的计算没有考虑安全库存,而经济批量订购模型计算中

考虑了安全库存。

3)徐先生计算的前提前提数据(表6-11中)表示月销量是固定的,而经济批量

订购模型只是假定年订购批量是固定的。

4)徐先生计算的(表6-12中)的库存是每月月末库存累计求和得出的期末库

存,即产品到货后立即销售;而经济订购批量计算的过程考虑的是平均库存水平,

即产品到货后到该期销售完成的持续库存。 2、徐先生的计算有什么不符合实际的地方,他建议的改进措施是否可行,为什么,怎么做才合理,

答:经济订购批量的前提条件与摩托车销售量的变情况不符,徐先生的改进措施显然不可行。因为:

1) 忽视了订购提前期和安全库存。

2) 徐先生采用的方法计算出的结果对库存的计算方式是不实际的,因为只计算了期末库存。

3) 如果采用了该种方法可能会造成该公司服务水平下降,影响公司销售及信誉,风险大。

练习题:P163-164,3,5,6

3、ABC分类法的本质是什么,

答:该方法的核心思想是在决定一个事物的众多因素中分清主次,识别出少数的但对事物起决定作用的关键因素和多数的但对事物影响较小的次要因素。

5、如何理解安全库存与服务水平的关系,

答:安全库存是一种额外持有的库存,它作为一种缓冲器,用来补偿在订货提前期内实际需求超过期望需求量或实际提前期超过期望提前所产生的需求。安全库存对公司的成本有双重的影响,降低缺货损失费,提高服务水平,但会增加维持库存费用。但是,即使有安全库存的存在,仍不能保证顾客的每一次需求都能得到保证,因此缺货是不能避免的。服务水平是衡量随机型库存系统的一个重要指标,它关系到库存系统的竞争能力。服务水平越高,安全库存量越大,所花的代价也越大,但服务水平过低又将失去顾客,减少利润。也就是说,在服务水平较低时,稍稍增加一点安全库存,服务水平提高的效果就很明显。但是,当服务水平增加到比较高的水平,再提高服务水平就需要大幅度增加安全库存。

6、老张所在的公司所需部件A、B要向供应商订购,该公司每年生产52周。

部件A的需求相对稳定,库存下降到订货点是再订货。部件B的供应商每3周访问公司一次。有关数据见表6-8。

部件 A B

年需求量(件) 10000 5000

单件年存储费用(占单价)比例(%) 20% 20%

每次生产准备费用(或采购费用)(元) 150 25

提前期(周) 4 1

安全库存(件) 55 5

单价(元) 10 2

Subsequently, the Anhui Army military Special Branch, in Shanghai's Central Intelligence Organization and the Communist party organization in Western Zhejiang Province, sent party backbone, respectively, went to Wu Jiangyan opened the Tomb, Tomb of heroic people, under the leadership of the Communist Party, fear no sacrifice and persevering, goal of the anti-Japanese revolutionary struggle. (A) stationed in Taoyuan area (Tomb of) 1, the new army of the Communist Party of China underground organization in September 1938, the CPC Zhuang Shaozhen (Zhuang Zhen, Nanxun people) by the Deputy Director of the political Department of the army on Deng Zihui's dispatch, operating from Jing County, Anhui Province, the Lake reached the Tomb, its tasks are: looking for reliable object, introduce them to the new, to expand the new team. Zhuang Shaozhen KMT-CPC cooperation as an opportunity, after classmates Yao Bi (Nanxun people, Ren Zhuxi force staff Director), introduced into the

Kuomintang government political team, and as a political leader. He used this opportunity to invite progressive youth Hong Haiquan form a

political team, at this point, the County Government has just been established, local school, unemployed youth are more quickly absorbed sheng, zhenze, Miaogang, Nanxun, huzhou, more than 20 more than

required-Japanese youth. In order to raise the level of political

players and the ability to work, Zhuang Shaozhen Xu Temple, is for the establishment of "youth ... Political activities will soon attract the attention of the Kuomintang. Is early Zhuang Shaozhen indicating Hong Haiquan to scoop the first elementary school, teacher's identity as a cover, carry out the party's work. However, County Director of education comes into action. To

(1)部件A属于何种存储控制系统,画出示意图。订货点与经济订货批量是多少,

(2)如何对部件B进行存储控制,

答:(1)部件A属于:连续检查库存控制系统。

订货点=(4×10000/364)+55=165

经济订货量:D=150×10000=15000000

(2)每次订货成本150×52=7800

保管费用:0.2×10000=2000

经济订货量:根号2×1500000×7800/2000=3421

B部件定期检查补货进行存储控制。

Subsequently, the Anhui Army military Special Branch, in Shanghai's Central Intelligence Organization and the Communist party organization

in Western Zhejiang Province, sent party backbone, respectively, went to

Wu Jiangyan opened the Tomb, Tomb of heroic people, under the leadership of the Communist Party, fear no sacrifice and persevering, goal of the anti-Japanese revolutionary struggle. (A) stationed in Taoyuan area (Tomb of) 1, the new army of the Communist Party of China underground organization in September 1938, the CPC Zhuang Shaozhen (Zhuang Zhen, Nanxun people) by the Deputy Director of the political Department of the army on Deng Zihui's dispatch, operating from Jing County, Anhui Province, the Lake reached the Tomb, its tasks are: looking for reliable object, introduce them to the new, to expand the new team. Zhuang Shaozhen KMT-CPC cooperation as an opportunity, after classmates Yao Bi (Nanxun people, Ren Zhuxi force staff Director), introduced into the Kuomintang government political team, and as a political leader. He used this opportunity to invite progressive youth Hong Haiquan form a

political team, at this point, the County Government has just been established, local school, unemployed youth are more quickly absorbed sheng, zhenze, Miaogang, Nanxun, huzhou, more than 20 more than

required-Japanese youth. In order to raise the level of political players and the ability to work, Zhuang Shaozhen Xu Temple, is for the establishment of "youth ... Political activities will soon attract the attention of the Kuomintang. Is early Zhuang Shaozhen indicating Hong Haiquan to scoop the first elementary school, teacher's identity as a cover, carry out the party's work. However, County Director of education comes into action. To

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