Chapter 03 part IIPPT课件
合集下载
MMC_ppt_ch03
Find Market Opportunities
Marketers find many opportunities by • identifying trends (directions or sequences of events that have some momentum and durability) • identifying megatrends (major social, economic, political, and technological changes that have long-lasting influence)
3-15
Market Demand Functions
Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall
3-16
Market Demand Functions
Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall
3-12
Market Demand
• • There are two types of demand: market demand and company demand. To estimate current demand, companies attempt to determine total market potential, area market potential, industry sales, and market share. To estimate future demand, companies survey buyers’ intentions, solicit their sales force’s input, gather expert opinions, analyze past sales, or engage in market testing. Mathematical models, advanced statistical techniques, and computerized data collection procedures are essential to all types of demand and sales forecasting.
商务英语教学chapter3PPT课件
学生应学会分析长难句的结构和 含义，以更好地理解阅读材料。
Reading and writing skills
• 推断作者意图：学生应通过阅读理解作者的意图和观点， 培养批判性思维能力。
Reading and writing skills
规范格式
学生应了解商务英语写作 的规范格式和要求，如邮 件、报告、提案等。
准确表达
学生应能够用准确、专业 的英语表达自己的观点和 信息，避免语法和拼写错 误。
条理清晰
学生应学会组织文章结构， 使内容条理清晰、逻辑严 密。
Cross cultural Communication in Business English
跨文化意识
尊重文化差异：学生应学会尊重文化差异，避免因文化 误解而引起的冲突和误解。
With the development of cross-border e-commerce, Business English has also been widely used in online business transactions. It is not only a language tool for communication, but also a necessary skill for modern businessmen.
communicate and conduct business.
The Definition and Characteristics of Business English
Business English is a specialized variety of English used in international business and trade activities. It is a bridge between different cultures and industries, and is characterized by accurate language, formal style, and practical application.
Reading and writing skills
• 推断作者意图：学生应通过阅读理解作者的意图和观点， 培养批判性思维能力。
Reading and writing skills
规范格式
学生应了解商务英语写作 的规范格式和要求，如邮 件、报告、提案等。
准确表达
学生应能够用准确、专业 的英语表达自己的观点和 信息，避免语法和拼写错 误。
条理清晰
学生应学会组织文章结构， 使内容条理清晰、逻辑严 密。
Cross cultural Communication in Business English
跨文化意识
尊重文化差异：学生应学会尊重文化差异，避免因文化 误解而引起的冲突和误解。
With the development of cross-border e-commerce, Business English has also been widely used in online business transactions. It is not only a language tool for communication, but also a necessary skill for modern businessmen.
communicate and conduct business.
The Definition and Characteristics of Business English
Business English is a specialized variety of English used in international business and trade activities. It is a bridge between different cultures and industries, and is characterized by accurate language, formal style, and practical application.
精品英语课程ppt课件
8
Chapter Six Four Basic Writing Styles
6. It is time for us to take an active part in… 7. Let us work hand in hand to (solve these social problems). 8. It goes without saying that… 9. I want to be a teacher/ to do something not only because …, but also because…(partly because, and partly because…) 10. Who is to say that (you will not be the victim of fake product again and again/ our scientists may not work out a better theory)?
3. In short, (shortage of water, decrease of fertile fields and environmental pollution) are the major problems to be solved to (increase grain production).
back
9
Chapter Six Four Basic Writing Styles
III.列举事例常用句式
1. There are many (quite a few) examples to show…
2. There is enough (sufficient, much, convincing) evidence showing (supporting, indicating, to show, to support, to indicate, in favor of the opinion) that…
Chapter Six Four Basic Writing Styles
6. It is time for us to take an active part in… 7. Let us work hand in hand to (solve these social problems). 8. It goes without saying that… 9. I want to be a teacher/ to do something not only because …, but also because…(partly because, and partly because…) 10. Who is to say that (you will not be the victim of fake product again and again/ our scientists may not work out a better theory)?
3. In short, (shortage of water, decrease of fertile fields and environmental pollution) are the major problems to be solved to (increase grain production).
back
9
Chapter Six Four Basic Writing Styles
III.列举事例常用句式
1. There are many (quite a few) examples to show…
2. There is enough (sufficient, much, convincing) evidence showing (supporting, indicating, to show, to support, to indicate, in favor of the opinion) that…
chapter3chaucerPPT教学课件
The church owned almost a third of all the land in the country and the clergy as feudal landlords were often terrible and extortionary 勒索的.
They also made use of their ecclesiastical 神职的 courts to oppress the common people and to squeeze as much money as possible out of them.
2020/12/09
4
---the difference between the rich
and the poor
Commerce and manufacture grew apace and brought wealth to the towns and cities and consequently also power to the more wealthy burghers 市民, especially to the citizens of London who began to play an important role in national politics and to be feared by the king.
After Richard II became king, three times he asked the parliament to pass new poll taxes人头税.
All these events led to the great peasants’ rising in 1381.
Though the rising was quelled 镇压 by the treacherous king, the popular discontent had its effect in the abolition of enforced services on the land as well as other laws of medieval serfdom, so that there was actually no more serfdom in England by the end of the 14th century.
They also made use of their ecclesiastical 神职的 courts to oppress the common people and to squeeze as much money as possible out of them.
2020/12/09
4
---the difference between the rich
and the poor
Commerce and manufacture grew apace and brought wealth to the towns and cities and consequently also power to the more wealthy burghers 市民, especially to the citizens of London who began to play an important role in national politics and to be feared by the king.
After Richard II became king, three times he asked the parliament to pass new poll taxes人头税.
All these events led to the great peasants’ rising in 1381.
Though the rising was quelled 镇压 by the treacherous king, the popular discontent had its effect in the abolition of enforced services on the land as well as other laws of medieval serfdom, so that there was actually no more serfdom in England by the end of the 14th century.
International trade chapter3 part__ 2
指示性抬头的汇票既可以由收款人根据自己的需 要，通过背书将收款的权利转让给其他人，具有 一定的流通性；
又由于汇票的转让需经原债权人背书而具有一定 的安全性。
Name of payee 收款人名称
3. Payable to Bearer持票人抬头/来人抬头 （1）pay to bearer 支付给来人 （2）pay to ABC Co. or bearer 支付给ABC公司或来人
October 28, 2010 见票 December 27, 2010 付款
补充
2.见票/出票日/说明日/提单日以后若干月付款（at × × months after sight/date/state date/ B/L date）的到期日算法是：到期日应该为付款 之月的相应日期，如果没有相应日期，则以该月 最后一日为到期日。
补充
远期汇票付款到期日算法 1.见票/出票日/说明日/提单日以后若干天付款（
at × × days after sight/date/stated date/ B/L date）的到期日算法是：“算尾不算 头，若干天的最后一天是到期日，如遇假日顺延 。” 所述日期次日作为起算日
At 60 days after sight October 27, 2010 见票 December 27, 2010 付款
Time of payment 付款期限
(4)Bills payable on a fixed future date 固定将来日期付款汇票 On June 30 fixed pay to… On 14/AUG/2009 fixed pay to the order of ABC
Co. the sum of Five thousand Pounds.
又由于汇票的转让需经原债权人背书而具有一定 的安全性。
Name of payee 收款人名称
3. Payable to Bearer持票人抬头/来人抬头 （1）pay to bearer 支付给来人 （2）pay to ABC Co. or bearer 支付给ABC公司或来人
October 28, 2010 见票 December 27, 2010 付款
补充
2.见票/出票日/说明日/提单日以后若干月付款（at × × months after sight/date/state date/ B/L date）的到期日算法是：到期日应该为付款 之月的相应日期，如果没有相应日期，则以该月 最后一日为到期日。
补充
远期汇票付款到期日算法 1.见票/出票日/说明日/提单日以后若干天付款（
at × × days after sight/date/stated date/ B/L date）的到期日算法是：“算尾不算 头，若干天的最后一天是到期日，如遇假日顺延 。” 所述日期次日作为起算日
At 60 days after sight October 27, 2010 见票 December 27, 2010 付款
Time of payment 付款期限
(4)Bills payable on a fixed future date 固定将来日期付款汇票 On June 30 fixed pay to… On 14/AUG/2009 fixed pay to the order of ABC
Co. the sum of Five thousand Pounds.
《跨境电商实用英语》全套教学课件Unit 4-Chapter 3 Price Negotiation
But some customers will bargain with the seller for discount before placing an order. For them, the seller should analyze the purpose of bargaining, respond and deal with it specifically.
PART 2 Passage Reading
In addition, there are some small wholesale customers on the Cross-border E-commerce platform. Many foreign small buyers favor online orders because of the delivery speed, payment after arrival of products, low risk and relatively high security etc. For them, the seller should give special attention and actively follow up with the inquiry. They should negotiate about the wholesale price according to the quantity and try to retain these small wholesale customers, which will bring great advantages to the positive cycle of online stores. On the one hand, the seller can set the wholesale price when publish the product, so that the buyer can click on the Bulk Price button to see the product's default wholesale price.
PART 2 Passage Reading
In addition, there are some small wholesale customers on the Cross-border E-commerce platform. Many foreign small buyers favor online orders because of the delivery speed, payment after arrival of products, low risk and relatively high security etc. For them, the seller should give special attention and actively follow up with the inquiry. They should negotiate about the wholesale price according to the quantity and try to retain these small wholesale customers, which will bring great advantages to the positive cycle of online stores. On the one hand, the seller can set the wholesale price when publish the product, so that the buyer can click on the Bulk Price button to see the product's default wholesale price.
chapter03part01recommendation推荐系统.ppt
Recommender Systems
How do you know you can trust somebody’s recommendation?
Because experience has taught you? Because critic is trusted source of info? Because a friend/expert likes movies/novels/
Problems Cold-start: at initial stage, users can not get good recommendations Scalability Sparsity Users with different opinion or unusual taste may not get good recommendations
food you like? ???
Applications:
Book Recommender
Red Mars
Found ation
Jurassic Park
Lost World
2001
Difference Engine
Machine Lea User-Based
high correlation
like
A
B
C
Use user-item preferences
Explicit user ratings, transaction data
1. Find highly correlated users
Pearson correlation between user rating data
ru, j wa,u Pa, j uU wa,u ,
Unit3P2PPT课件
Wednesday,September 28th
2020年10月2日
1
Let’s have a look ! What time is it now?
clock
8:00 eight o’clock
2020年10月2日
2
flash
2020年10月2日
3
Hello, I’m________
His name’s… Her name’s…
-Excuse me, are you_____? -Good morning, boys and
-Yes, I am.
girls. My name’s _____.
-I’m ______. Nice to meet What’s your name?
you.
-My name’s _______.
-Nice to meet you, too.
汇报人：XXX 汇报日期：20XX年10月10日
20
four,
Three,
Open the door.
Five, six,
Pick up the sticks.
Seven, eight,
Sit up straight.
Nine, ten,
Give me a pen.
Eleven, twelve,
Look after yourselves.
2020年10月2日
19
演讲完毕，谢谢观看！
Thank you for reading! In order to facilitate learning and use, the content of this document can be modified, adjusted and printed at will after downloading. Welcome to download!
2020年10月2日
1
Let’s have a look ! What time is it now?
clock
8:00 eight o’clock
2020年10月2日
2
flash
2020年10月2日
3
Hello, I’m________
His name’s… Her name’s…
-Excuse me, are you_____? -Good morning, boys and
-Yes, I am.
girls. My name’s _____.
-I’m ______. Nice to meet What’s your name?
you.
-My name’s _______.
-Nice to meet you, too.
汇报人：XXX 汇报日期：20XX年10月10日
20
four,
Three,
Open the door.
Five, six,
Pick up the sticks.
Seven, eight,
Sit up straight.
Nine, ten,
Give me a pen.
Eleven, twelve,
Look after yourselves.
2020年10月2日
19
演讲完毕，谢谢观看！
Thank you for reading! In order to facilitate learning and use, the content of this document can be modified, adjusted and printed at will after downloading. Welcome to download!
第三章 导数与微分 《经济数学》PPT课件
CHAPTER
03
第3章 导数与 微分
PART
03
3.1
导数
导数是数学中的一个分支——微积分的两个基本概念之一,它
表示一个函数的因变量相对于自变量的变化的快慢程度,即因变 量关于自变量的变化率.事物总是在不断地运动和变化的,而描述 这种运动和变化离不开变化率,导数就是对现实生活中各种各样 的变化率的一种统一的数学抽象.导数是微积分以及实际生活中 应用极其广泛的概念,其应用范围包括函数性态的描述、曲线的 描绘、最优化问题的讨论以及变化率的分析等.
,
即函数在点x=0处的右导数不存在,所以函数f(x)在点x=0处的导
数不存在.
3. 1. 5
高阶导数
在本小节中,我们将讨论一个量的变化率的变化率.这样的变化率 有很多种,例如,汽车的加速度是它的速度关于时间的变化率,而 速度本身又是路程关于时间的变化率.如果路程的单位是千米,时 间的单位是小时,那么速度(路程关于时间的变化率)的单位是千 米/小时,而加速度(速度的变化率)的单位则是千米/小时2.
上述有关变化率的变化率的问题,在经济上是常用的.例如,在通 货膨胀时期,你可以听到经济部门的报告指出,“尽管通货膨胀率 在增长,但其增长速度在减缓”,就是指物价在上涨,但已经不比 以前那样增长得快了.
3. 1. 5
高阶导数
1) 高阶导数的概念 ➢ 设函数y=f(x)关于x的变化率由其导函数f '(x)给出.类似地,函数f
3.2 1 微分的定义
关于微分定义的几点说明: ➢ (1)函数的微分dy是Δx的一次函数,它不仅与Δx有关,而且与x也
有关.函数的微分dy与Δy只差一个比Δx高阶的无穷小,它是Δy的 主要部分,所以也称微分dy是函数改变量Δy的线性主部. ➢ (2)若函数y=f(x)在x处的改变量Δy可以表示成Δx的线性函数 k(x)Δx与一个比Δx高阶的无穷小之和Δy=k(x)Δx+o(Δx),则称 函数y=f(x)在点x处可微. ➢ (3)由于自变量x的微分dx=(x)'Δx=Δx,故dx可理解为自变量x的 改变量Δx.于是dy=f '(x)Δx=f '(x)dx,即函数的微分等于函数的 导数乘上自变量的微分.
03
第3章 导数与 微分
PART
03
3.1
导数
导数是数学中的一个分支——微积分的两个基本概念之一,它
表示一个函数的因变量相对于自变量的变化的快慢程度,即因变 量关于自变量的变化率.事物总是在不断地运动和变化的,而描述 这种运动和变化离不开变化率,导数就是对现实生活中各种各样 的变化率的一种统一的数学抽象.导数是微积分以及实际生活中 应用极其广泛的概念,其应用范围包括函数性态的描述、曲线的 描绘、最优化问题的讨论以及变化率的分析等.
,
即函数在点x=0处的右导数不存在,所以函数f(x)在点x=0处的导
数不存在.
3. 1. 5
高阶导数
在本小节中,我们将讨论一个量的变化率的变化率.这样的变化率 有很多种,例如,汽车的加速度是它的速度关于时间的变化率,而 速度本身又是路程关于时间的变化率.如果路程的单位是千米,时 间的单位是小时,那么速度(路程关于时间的变化率)的单位是千 米/小时,而加速度(速度的变化率)的单位则是千米/小时2.
上述有关变化率的变化率的问题,在经济上是常用的.例如,在通 货膨胀时期,你可以听到经济部门的报告指出,“尽管通货膨胀率 在增长,但其增长速度在减缓”,就是指物价在上涨,但已经不比 以前那样增长得快了.
3. 1. 5
高阶导数
1) 高阶导数的概念 ➢ 设函数y=f(x)关于x的变化率由其导函数f '(x)给出.类似地,函数f
3.2 1 微分的定义
关于微分定义的几点说明: ➢ (1)函数的微分dy是Δx的一次函数,它不仅与Δx有关,而且与x也
有关.函数的微分dy与Δy只差一个比Δx高阶的无穷小,它是Δy的 主要部分,所以也称微分dy是函数改变量Δy的线性主部. ➢ (2)若函数y=f(x)在x处的改变量Δy可以表示成Δx的线性函数 k(x)Δx与一个比Δx高阶的无穷小之和Δy=k(x)Δx+o(Δx),则称 函数y=f(x)在点x处可微. ➢ (3)由于自变量x的微分dx=(x)'Δx=Δx,故dx可理解为自变量x的 改变量Δx.于是dy=f '(x)Δx=f '(x)dx,即函数的微分等于函数的 导数乘上自变量的微分.
unit3第二篇.ppt
She programs possible moves that Andy can use if a new situation arises.
Read the text carefully and decide whether the following sentences are true or false.
• 句子
• 她把观看人类比赛时所看到的一切可能动作编入我们的 程序。
• She programs us with all the possible moves she has been while watching human games.
• 不管怎样，在我过目不忘的电子脑的帮助下，运用智能 就是我的一切。
• After all, with the help of my electronic brain which never forgets anything ,using intelligence is what I’m all about !
课文复习
I am p_a_r_t_o_f__(一员)a football team. About
Questions
1. What is Andy’s opinion about the match in Seattle? He thinks that the team who won the first place cheated.
2. How does the programmer help Andy to make up new moves?
• After all, ________（在…帮助之下)my electronic brain which never forgets ____(anything/something),___ (使 用)intelligence is ___( what /that ) I’m all about!.
Read the text carefully and decide whether the following sentences are true or false.
• 句子
• 她把观看人类比赛时所看到的一切可能动作编入我们的 程序。
• She programs us with all the possible moves she has been while watching human games.
• 不管怎样，在我过目不忘的电子脑的帮助下，运用智能 就是我的一切。
• After all, with the help of my electronic brain which never forgets anything ,using intelligence is what I’m all about !
课文复习
I am p_a_r_t_o_f__(一员)a football team. About
Questions
1. What is Andy’s opinion about the match in Seattle? He thinks that the team who won the first place cheated.
2. How does the programmer help Andy to make up new moves?
• After all, ________（在…帮助之下)my electronic brain which never forgets ____(anything/something),___ (使 用)intelligence is ___( what /that ) I’m all about!.
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1~3.5
2.4 3.0 4.0 5.3 7
9 13 18 28 45 71 112
>3.5~6.3 2.5 3.2 4.5 6.0 8 11 16 22 36 56 90 140
>125~400 >6.3~10 2.6 3.6 5.0 6.5
9 13 19 28 45 71 112 180
>10~16 3.0 4.0 5.5 7.5 11 16 22 32 50 80 125 200
float m[12]= ｛4,5,6,7,8,9,10,12,14,16,18,20｝; float d[12] = ｛3.3,4.2,5,6,6.7,7.7,8.5,10.2,11.9,13.9,15.4,17.4｝
方法一：数表的数组化处理
（2）二维数表
二维数组ka[3][3]
齿轮传动工况系数KA
1~3.5
3.0 4.2 5.5 8.0 11 17 24 36 56 90 140 224
>3.5~6.3 3.2 4.5 6.0 9.0 13 18 28 40 63 100 160 250
>800~1600 >6.3~10
3.4 4.8 6.5 9.5
14
20
30
45
71 112 180
380
工作机的载荷特性 工作平稳
中等冲击
原动机的 载荷特性 工作平稳 轻度冲击 中等冲击
工况系数ka[i][j]
i=0 i=1 i=2
j=0
1.00 1.25 1.50
j=1
1.25 1.50 1.75
较大冲击
j=2 1.75 2.00 2.25
（方3）法多一维：数数表 表的数组化处理 渐开线圆柱齿轮的齿型公差
方法一：数表的数组化处理
（1）一维数表
标准螺孔底孔尺寸
公称尺寸 M4 M5 M6 M7 M8 M9 M10 M12 M14 M16 M18 M20
底孔尺寸d 3.3 4.2 5 6 6.7 7.7 8.5 10.2 11.9 13.9 15.4 17.4
要求：根据公称尺寸，查询孔尺寸。 建立一维数组：
1） 特点：数据是单一、严格、无规律可循的数列。 2）方法：用数组存储数据，程序运行直接检索。
方法二：数表的文件化处理
轴 径d
17~22 22~30 30~38 38~44 44~50 50~58 58~65 65~75 75~85 85~95 95~110 110~130
键
b
h
6
6
8
7
10
8
1.8 1.2 0.6
0 0.5 1.0 1.5 2.0
方法一：程序化
1）数组化 2）公式化
方法二：文件化存储
数表的处理
工程手册中数表的类型
常数数表，如各种材料的力学性能、标准零件的尺寸 参数等，标准手册
列表函数，用以表达工程中某些复杂问题参数之间的 关系，经验公式。
数据处理方法：
1. 方法一：数表的数组化处理 2. 方法二：数表的文件化处理 3. 方法三：数表的公式化处理
>16~25 3.4 4.8 6.5 9.5 14 20 30 45 71 112 180 280
1~3.5
2.6 3.4 4.5 6.5
9 12 17 25 40 63 100 160
>3.5~6.3 2.8 3.8 5.0 7.0 10 14 20 28 45 71 112 180
>400~800
>10~16 3.6 5.0 7.5 10.5 15 22 34 50 80 125 200 315
>16~25 4.2 6.0 8.5 12 19 28 42 63 100 160 250 400
>25~40 5.0 7.0 10.5 15 28 36 53 80 125 200 315 500
方法一：数表的数组化处理
第三章 CAD/CAM中的工程数据管理
工程数据的计算机处理
工程中的数据
例3-11 下图表示正常齿轮在不同角速度下影响动载 荷的实验曲线。请问通过什么方法可实现数据的存储？
载荷比
P max Pm
1.8
1.2
0.6
0 0.5 1.0 1.5 2.0
齿轮动载荷实验曲线
c 角速度比
工程数据的处理方法
分度圆直径d 法向模数mn
精度等级
1 2 3 4 5 6 7 8 9 10 11 12
1~3.5
2.1 2.6 3.6 4.8 6
8 11 14 22 36 56
90
<125
>3.5~6.3 2.4 3.0 4.0 5.3 7 10 14 20 32 50 80 125
>6.3~10 2.5 3.2 4.5 6.0 8 11 16 22 36 56 90 140
>6.3~10
3.0 4.0 5.5 7.5
11
16
24
36
56
90 140
224
>10~16 3.2 4.5 6.0 9.0 13 18 26 40 63 100 160 250
>16~25 3.8 5.3 7.5 10.5 16 24 36 56.5 9.5 14.0 21 30 48 71 112 180 280 450
12
8
14
9
16
10
18
11
20
12
22
14
25
14
28
16
32
18
键 t
3．5 4．0 5．0 5．0 5．5 6．0 7．0 7．5 9．0 9．0 10．0 11．0
槽 t1
2．8 3．3 3．3 3．3 3．8 4．3 3．4 4．9 5．4 5．4 6．4 7．4
平键和键槽的剖面尺寸
平键和键槽剖面
｛3.4,…,280｝｝, ｛｛2.6,3.4,…,160｝,｛2.8,3.8,…,180｝, ｛…｝，｛…｝，
｛4.5,…,450｝｝, ｛｛3.0,4.2,…,224｝,｛3.2,4.5,…,250｝, ｛…｝，｛…｝，
｛5.0,…,500｝｝//齿型公差ff
方法一：数表的数组化处理
用数组形式存储数据
float dd[4]=｛125,400,800,1600｝;//齿轮直径d的上限值
float dd[6]=｛3.5,6.3,10,16,25,40｝;//齿轮法向模数上限值
float ff[4][6] [12]= ｛｛｛2.1,2.6,…,90｝,｛2.4,3.0,…,125｝,
｛2.4,3.4,…,140｝｝, ｛｛2.4,3.0,…,112｝,｛2.5,3.2,…,140｝, ｛…｝，｛…｝，