ch01
成都电台频率

10060 经济之声
10090 双流人民广播电台
10170 四川电台交通频率
10260 四川城市之音
10320 only Radio
10370 中国之声
10440 青白江人民广播电台
10460 泸州交通广播
10500 成都文化休闲
10560 成都电台经济频率
09460 成都文化休闲
09550 四川电台岷江音乐
09590 德阳经济
09650 郫县人民广播电台
09700 四川电台旅游频率
09810 四川电台新闻频率
09870 中国之声
09930 龙泉驿人民广播电台
09960 彭州人民广播电台
09980 成都电台新闻频率
成都fm频道列表
[FM]
CH01=08940,四川电台大众频率
CH02=09400,四川电台经济频率
CH03=09550,四川电台岷江音乐
CH04=09700,四川电台旅游频率
CH05=09810,四川电台新闻频率
CH06=10170,四川电台交通频率
CH07=10260,四川电台岷江音乐
09050 新都人民广播电台
09080 眉山人民广播电台
09140 成都交通
09170 四川经济
09200 中国之声
09220 成都理工大学晨光电台
09270 四川旅游休闲
09330 崇州人民广播电台
09350 都江堰人民广播电台
09400 四川电台经济频率
09420 四川新闻
10610 四川新闻
10650 温江人民广播电台
Ch 01 补充内容(可列集)

1-1
命题:集可列, 结论: 无理数集不可列。 (无理数集的势 > 有理数集的势)
【思考 5】 建立 [0,1] 与 (0,1) 之间的一个双射。 (用构造性证明,即给出双射函数) 【思考 6】建立 (0,1) 与 (0,1) 中无理数集之间的一个双射。 (无理数集与实数集等势)
Ch 01 补充内容
可列集
(无穷)可列集: {1, 3,5,...} , {a1 , a2 , a3 ,...} . 命题:任意二个可列集之间都可以建立一一对应。 (它们等势) 可列集 {a1 , a2 , a3 ,...} 与正自然数集 N+ {1, 2,...} 一一对应。 ( T (an ) n ) 【思考 1】 建立 I (0,1) 与 R ( , ) 之间的一个双射。 【思考 2】建立自然数集与整数集之间的一个一一对应。 【思考 3】建立正有理数集 Q 与正整数集 N 之间的一个双射。 【思考 4】证明 I (0,1) 是不可列集。 (即不能排成一列) 思考题意义: (1) (0,1) 与 (, ) 等势; (2) 整数集为可列集, (3) 正有理数集为可列集; (4) (0,1) 为不可列集。
ch01系统基础信息模块详解

ch01系统基础信息模块详解第1章系统基础信息模块详解1.1 系统性能信息模块 psutil解决VMWare在Windows10的安装问题: 安装VC Redistributable 2017解决虚拟机的上⽹问题:修改VMWare 的⽹络设置解决PuTTY连接不上虚拟机的问题:修改VMnet8的IPv4地址在Centos7安装pip在Centos7安装psutil模块#1、以root⾝份登陆CentOS依次执⾏以下命令:wget https:///packages/source/p/psutil/psutil-2.1.3.tar.gz --no-check-certificatetar zxvf psutil-2.1.3.tar.gzcd psutil-2.1.3/python setup.py install#2、在执⾏以上命令最后的安装命令时,遇到以下问题psutil/_psutil_linux.c:12:20: fatal error: Python.h: No such file or directory这样的错误提⽰,表⽰缺少Python-dev的依赖环境,直接安装Python-devel即可yum -y install python-devel*安装完后,再执⾏ python setup.py install 即可安装完成提⽰:Installed /usr/lib64/python2.7/site-packages/psutil-2.1.3-py2.7-linux-x86_64.eggProcessing dependencies for psutil==2.1.3Finished processing dependencies for psutil==2.1.31.1.1 获取系统性能信息(1) CPU信息>>> import psutil/usr/lib64/python2.7/site-packages/psutil-2.1.3-py2.7-linux-x86_64.egg/_psutil_linux.py:3: UserWarning: Module _psutil_linux was already imported from /usr/lib64/python2.7/site-packages/psutil-2.1.3-py2.7-linux-x86_64.egg/_psutil_linux.pyc, but >>> psutil.cpu_times()scputimes(user=46.0, nice=0.27, system=87.6, idle=10040.74, iowait=52.76, irq=0.0, softirq=9.79, steal=0.0, guest=0.0, guest_nice=0.0)>>> psutil.cpu_times().user46.03>>> psutil.cpu_count()2>>> psutil.cpu_count(logical=False)2>>>(2)内存信息>>> mem = psutil.virtual_memory()>>> memsvmem(total=1907970048L, available=1505476608L, percent=21.1, used=915431424L, free=992538624L, active=423669760, inactive=202493952, buffers=2134016L, cached=510803968)>>> mem.total1907970048L>>> mem.free992538624L>>> psutil.swap_memory()sswap(total=2147479552L, used=0L, free=2147479552L, percent=0.0, sin=0, sout=0)>>>(3)磁盘信息>>> psutil.disk_partitions()[sdiskpart(device='/dev/sda3', mountpoint='/', fstype='xfs', opts='rw,seclabel,relatime,attr2,inode64,noquota'), sdiskpart(device='/dev/sda1', mountpoint='/boot', fstype='xfs', opts='rw,seclabel,relatime,attr2,inode64,noquota')]>>> psutil.disk_usage('/')sdiskusage(total=19001245696, used=4522000384, free=14479245312, percent=23.8)>>> psutil.disk_io_counters()sdiskio(read_count=14186, write_count=8265, read_bytes=432613888, write_bytes=230467072, read_time=225143, write_time=59109)>>> psutil.disk_io_counters(perdisk=True){'sr0': sdiskio(read_count=18, write_count=0, read_bytes=1052672, write_bytes=0, read_time=761, write_time=0), 'sda2': sdiskio(read_count=54, write_count=0, read_bytes=2527232, write_bytes=0, read_time=335, write_time=0), 'sda3': sdiskio(r >>>(4)⽹络信息>>> _io_counters()snetio(bytes_sent=1227849, bytes_recv=34910887, packets_sent=12412, packets_recv=29882, errin=0, errout=0, dropin=0, dropout=0)>>> _io_counters(pernic=True){'lo': snetio(bytes_sent=14274, bytes_recv=14274, packets_sent=144, packets_recv=144, errin=0, errout=0, dropin=0, dropout=0), 'ens33': snetio(bytes_sent=1216087, bytes_recv=34904091, packets_sent=12290, packets_recv=29824, errin=0, >>>(5)其他系统信息>>> ers()[suser(name='root', terminal='tty1', host='', started=1597921920.0), suser(name='root', terminal='pts/0', host='192.168.135.1', started=1597933824.0), suser(name='chenjo', terminal='pts/1', host='192.168.135.1', started=1597923712.0)]>>> import datetime>>> psutil.boot_time()1597925932.0>>> datetime.datetime.fromtimestamp(psutil.boot_time()).strftime("%Y-%m-%d %H:%M:%S")'2020-08-20 20:18:52'>>>1.1.2 系统进程管理⽅法(1)进程信息>>> import psutil>>> psutil.pids()[1, 2, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 36, 37, 38, 39, 47, 48, 49, 50, 51, 53, 66, 97, 638, 649, 655, 664, 666, 805, 810, 1678, 1683, 1824, 1828, 2876, 2877, 2887, 2890, 2893, 2894, 2895, 2896, >>> p = psutil.Process(17557)>>> <bound method of <psutil.Process(pid=17557, name='python') at 139991911690768>>>>> p.exe()'/usr/bin/python2.7;5f3e6c2d'>>> p.cwd()'/tmp'>>> p.status()'stopped'>>> p.create_time()1597928634.08>>> p.uids()puids(real=0, effective=0, saved=0)>>> p.gids()pgids(real=0, effective=0, saved=0)>>> p.cpu_times()pcputimes(user=0.01, system=0.0)>>> p.cpu_affinity()[0, 1]>>> p.memory_percent()0.27350031021032045>>> p.memory_info()pmem(rss=5218304, vms=133287936)>>> p.io_counters()pio(read_count=118, write_count=9, read_bytes=0, write_bytes=0)>>> p.connections()[]>>> p.num_threads()1>>>(2)popen类的使⽤import psutilfrom subprocess import PIPEp = psutil.Popen(["/usr/bin/python", "-c", "print('hello')"], stdout=PIPE)()ername()p.cpu_times()municate()#p.cpu_times()[root@ansible mycode]# pythonPython 2.7.5 (default, Apr 2 2020, 13:16:51)[GCC 4.8.5 20150623 (Red Hat 4.8.5-39)] on linux2Type "help", "copyright", "credits" or "license" for more information.>>> import psutil>>> from subprocess import PIPE>>> p = psutil.Popen(["/usr/bin/python", "-c", "print('hello')"], stdout=PIPE)>>> ()'python'>>> ername()'root'>>> p.cpu_times()pcputimes(user=0.01, system=0.0)>>> municate()('hello\n', None)>>>参考提⽰1.1.1节⽰例参考https:///giampaolo/psutil1.1.1节模块说明参考官⽹/en/latest1.2 实⽤的IP地址处理模块IPyCentos7上安装ipy>>> from IPy import IP>>> IP('10.0.0.0/8').version()4>>> IP('::1').version()6>>>>>> ip = IP('192.168.0.0/16')>>> print ip.len()65536>>> for x in ip:... print(x)...192.168.0.0192.168.0.1192.168.0.2192.168.0.3...>>> print(IP('192.168.1.0').make_net('255.255.255.0'))192.168.1.0/24>>> print(IP('192.168.1.0/255.255.255.0', make_net=True))192.168.1.0/24>>> print(IP('192.168.1.0-192.168.1.255', make_net=True))192.168.1.0/24>>>wantprefixlen 的取值及含义:wantprefixlen = 0,⽆返回,如192.168.1.0。
ch01 第一章 简介.

MCS-51 單晶片的比較 8052 系單晶片
8 位元 8KB 最大可擴充至 64KB 256 bytes 最大可擴充至 64KB 有 可位元定址,4 組 (P0、P1、P2、P3) 3 組 (T0、T1、T2) 6組 (INT0、INT1、T0~T2、RXD 或 TXD) 1 組全雙工 UART
8051 系單晶片
第一章 简介
1.1 微电脑基本结构 1.2 单芯片微电脑 1.3 MCS-51 单芯片微电脑
1
1.1 微电脑基本结构
微电脑基本结构
記憶體單元
輸入單元
算術邏輯單元
輸出單元
資料匯流排 控制匯流排
控制單元
2
1.2 单芯片微电脑
单芯片微电脑
体积小
使用简单 硬件接线容易 扩充性佳
3
1.3 MCS-51 单芯片微电脑
MCS-51 单芯片微电脑
无ROM型单芯片 PROM型单芯片 EPROM 型单芯片 Flash ROM 型单芯片
4
1.3 MCS-51 单芯片微电脑
表1-1 項目
控制晶片 內部程式記憶體 外部程式記憶體 內部資料記憶體 外部資料記憶體 布林運算能力 I/O 埠 計時/計數器 中斷源 串列埠 8 位元 4KB 最大可擴充至 64KB 128 bytes 最大可擴充至 64KB 有
ቤተ መጻሕፍቲ ባይዱ
5
物联网创新中心
National Taiwan University of Science and Technology
台 湾 科 技 大 学
6
可位元定址,4 組 (P0、P1、P2、P3) 2 組 (T0、T1) 5組 (INT0、INT1、T0、T1、RXD 或 TXD) 1 組全雙工 UART
ch01命题逻辑(第一讲)

命题2:今天下雨 “今天是星期五且今天下雨”怎么表示? “今天是星期五或者今天下雨”怎么表示? 例如:“如果今天下雨,我们就不去踢球”怎么表示?
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➢ 否定词“¬”(或“”)
否定词(Negation) 是一元联结词。相当于自 然语言中的“非”、“不”等, 真值表如右图。
命题的真值是具有客观性质的,而不是由人的主观
决定的。
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命题与真值
1.1 命题与联结词
命题的真值:作为命题的陈述句所表示的判断结果称为命题的 真值。
真值的取值:真值只取两个值:真或假。通常用1(或字母T) 表示真,用0(或字母F)表示假。
真命题与假命题:凡是与事实相符的陈述句是真命题,而与事 实不符合的陈述句是假命题。
数理逻辑概述
➢ 数理逻辑是用数学的方法研究思维规律的一门学 科。由于它使用了一套符号,简洁的表达出各种 推理的逻辑关系,因此数理逻辑一般又称为符号 逻辑。
➢ 数理逻辑和计算机的发展有着密切的联系,它为 机器证明、自动程序设计、计算机辅助设计等计 算机应用和理论研究提供必要的理论基础。
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1
(2) 2 + 2 = 4 当且仅当 3 是偶数.
0
(3) 2 + 2 = 4 当且仅当 太阳从东方升起.
1
(4) 2 + 2 = 4 当且仅当 美国位于非洲.
0
(5) 函数 f (x) 在 x0 可导的充要条件是 它在 x0 连续.
0
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1.2 合式公式及分类
1.命题变元
在命题逻辑中,又有命题常元和命题变元之分。如果 P代表一个确定的具体的命题,称P为命题常元;若 P代表一个不确定的泛指的任意命题,称P为命题变 元。显然,命题变元P不是命题,只有用一个特定的 命题或一个真值取代P才能成为命题。这时也说对P 指派或解释,记为I(P)。
CH01 数控加工自动编程技术概述

第1章 数控加工自动编程技术概述教学提示:● CAD/CAM将产品的设计与制造作为一个整体进行规划和开发,实现了信息处理的高度一体化,具有高智力、知识密集、综合性强和效益高等特点。
● CAD/CAM系统需要对产品设计、制造全过程的信息进行处理,包括设计、制造过程中的数值计算、设计分析、绘图、工程数据库、工艺设计及加工仿真等各个方面。
●数控编程一般可分为手工编程和自动编程。
在产品的设计和制造中,有关几何形状的描述、结构分析、工艺过程设计和数控加工等方面的技术都与几何形状有关,几何形状的定义和描述即建立系统的数据模型是其中的核心部分,它为设计、分析计算和制造提供了统一的数据和有关信息。
教学要求:通过学习,了解CAD/CAM技术发展的历史与未来、CAD/CAM的软件和硬件及系统结构组成、常用CAD/CAM软件的功能和特点,了解CAD/CAM一般的作业流程,从而对先进制造技术的框架内容有一个比较完整、清晰的了解,为后续学习奠定基础。
1.1 CAD/CAM基础知识1.1.1 基本概念CAD/CAM就是计算机辅助设计与计算机辅助制造(Computer Aided Design and Computer Aided Manufacturing),是一项利用计算机作为主要技术手段,通过生成和运用各种数字信息与图形信息,帮助人们完成产品设计与制造的技术。
CAD主要指使用计算机和信息技术来辅助完成产品的全部设计过程(指从接受产品的功能定义到设计完成产品的材料信息、结构形状和技术要求等,并最终以图形信息的形式表达出来的过程)。
CAM一般有广义和狭义两种理解,广义的CAM包括利用计算机进行生产的规划、管理和控制产品制造的全过程;狭义的CAM仅包括计算机辅助编制数控加工的程序。
本书所说的CAM一般是指狭义的CAM。
CAD/CAM技术的发展和应用水平已成为衡量一个国家科技现代化和工业现代化水平的重要标志之一。
CAD/CAM技术应用的实际效果是:提高了产品设计的质量,缩短了产品设计制造周期,由此产生了显著的社会经济效益。
工业机器人操作与应用【ch01】PROFINET工业网络通信 培训教学课件

KRC4系统PROFINET连接方式
在KRC4系统中,PROFINET模块可用于连接数字量和模拟量,在实际生产应 用中,比较常用的PROFINET模块目前由西门子、WAGO、Phoenix、P业 等制造厂商提供。 通常为了使现场总线连接渚晰,便于诊断通信模块的故障,KRC4系统还会 通过一个总线耦合器(Scalance交换机)与现场总线模块连接,总线耦合器中 设有可连接PROFINET模块的逻辑电路,现场总线可通过I/0接口与之连接。
KRC4系统PROFINET驱动程序
2 KRC4系统PROFINET驱动程序安装
驱动程序可以借助U盘KUKA.PROFINETOptionsCD(选项光盘)安装,也 可以通过网络安装。 PROFINET驱动程序的安装方式有两种,一种是通过示教器安装,另一种 是通过WorkVisual软件(KRC4系统专用软件)安装。
03
KRC4系统 PROFINET驱动程序
KRC4系统PROFINET驱动程序
1 KRC4系统PROFINET软件堆栈说明
KRC4系统通过库卡线路接口(KUKALineInte.tface,KLI)实现PROFINET通 信,PROFINET通信协议由安装的PROFINET软件堆栈提供,PROFINET软 件堆栈用于模拟传统PROFINET通信卡的功能。 PROFINET软件堆栈不仅简化了硬件配置,而且提高了系统的灵活性。
KRC4系统PROFINET连接方式
1 PROFINET概述
一类是实时通信(RT),这类通信没有时间同步要求,一般要求响应时间为 5~10ms,主要用于工厂自动化。实时通信时,应用程序通常并非同步运行, 应用程序、数据传输和现场设备具有不同的处理周期,周期时间和图像跳 动精度均很不精确。 另一类是等时实时同步通信(IRT),可实现节拍同步式的数据传输。 这种通信方式下,应用程序、数据传输和现场设备的处理周期保待同步, 周期时间小于lms,图像跳动精度小于O.O01ms,主要用于运动控制。
数字图像处理ch01(MATLAB)-课件

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<2>几何处理
放大、缩小、旋转,配准,几何校正,面积、周长计算。
请计算台湾的陆地面积
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<3>图象复原
由图象的退化模型,求出原始图象
图像处理是指按照一定的目标,用一系列的操 作来“改造”图像的方法.
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➢图象处理技术的分类(从方法上进行分类)[2]
1.模拟图象处理(光学图像处理等)
用光学、电子等方法对模拟信号组成的图像,用光学器 件、电子器件进行光学变换等处理得到所需结果(哈哈 镜、望远镜,放大镜,电视等).
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<4>图象重建[3]
[3]此图像来自罗立民,脑成像,
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图形用户界面,动画,网页制作等
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提问
摄像头(机),扫描仪,CT成像装置,其他图象成像装置
2)图象的存储
各种图象存储压缩格式(JPEG,MPEG等),海量图象数据库技术
3)图象的传输
内部传输(DirectMemoryAccess),外部传输(主要是网络)
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Chapter1MARKETING CHANNEL CONCEPTSLearning objectives1)Be aware of the growing importance of marketing channels in the larger contentof overall marketing objectives.2)Understand the definition of the marketing channel from a managerial perspective.3)Show how marketing channels relate to the other strategic variables in themarketing mix.4)Understand the flow in and through the marketing channels and how they relate tochannel management.5)Familiarize the concepts of channel structure and the ancillary structure andrecognize their differences.Chapter Topics1)Growing Importance of Marketing Channels2)The Marketing Channel Defined3)Use of the term Channel Manager4)Marketing Channels and Marketing Management Strategy5)Channel Strategy versus Logistics Management6)Flows in Marketing Channels7)Distribution through Intermediaries8)Channel Structure9)Ancillary StructureGrowing Importance of Marketing ChannelsA) Explosion of Information Technology and E-CommerceThe explosion of information technology and E-commerce in recent years has focused attention to “channel” as a means for sustainable competitive advantage. Marketing channel strategy and management must now deal with E-commerce technology as an integral part of marketing channels and distribution systems.The reasons for this attention to channel, as a means of differentiation is a function of:a)Explosion of information technology and E-commerceb)Greater difficulty of gaining a sustainable competitive advantagec)Growing power of distributors, especially retailers in marketing channelsd)The need to reduce distribution costsKey Terms and DefinitionsMarketing Channel Concepts▪Disintermediation: Shorthand for a metamorphosis that would allow hundreds of thousands of producers to be connected directly with millions of consumers without the help of middlemen. This phenomenon did not occur as predicted.▪Reintermediation: Occurred as new types of middlemen called infomediaries such as eBay and Yahoo! emerged to connect producers to consumers.B) Difficulty in Gaining Sustainable Competitive AdvantageCompanies struggle to find a sustainable competitive advantage that cannot be easily or quickly copied by competitors. In recent years, the finding of such an advantage is far more difficult using pricing, product, or promotion strategies.Place or marketing channel strategy, does offer greater potential for a competitive advantage because it is more difficult for competitors to copy.Key Terms and Definitions▪Sustainable competitive advantage: A competitive edge that cannot be quickly or easily copied by competitors.▪Product strategy: Whereby a company creates or modifies a product offering for new or current markets through the use of product innovation, augmentation or lineextensions. Rapid technology transfer and global competition has made parity in product designs, features, and quality easier for competitors to copy thus reducing a firm‟s competitive advantage through product.▪Pricing strategy: Gaining a competitive advantage through pricing strategies is even less feasible than through product development. Pricing strategy is defined as using price as an element in the marketing strategy to gain or hold market share.▪Promotion: The integration of personal selling, advertising, public relations, price discounts, and trade allowances designed to entice the consumer to purchase. The sheer amount of advertising messages to which consumers are exposed to on a daily basis dramatically reduces the time limit promotion provides a firm a competitive advantage.▪Place: The where and how the product or service is delivered to the consumer, the fourth element in the marketing mix, does offer greater potential for a sustainable competitive advantage.C) Growing Power of DistributorsEconomic power has shifted from the producers of goods to the distributors of goods. These distributors now form and play a role as “gatekeepers” for the consumers acting as buying agents and selecting what products the consumer “sees”. Examples include: Home Depot, Toys …R‟ Us, and other “category killers”.Marketing Channels 7e D) Need to Reduce Distribution CostsDistribution costs for many manufacturing firms often meet or exceed the costs of manufacturing or raw materials. In order to reduce these costs manufacturers must begin the process of focusing attention on marketing channel structure more than they have in the past. (See Table 1.1).The Marketing Channel DefinedThe definition of “marketing channel” is based upon one‟s perspective– that of a consumer versus that of a manufacturer.From the perspective of a marketing manager, the marketing channel is viewed and defined as: “the external contactual organization that management operates to achieve its distribution objectives”.Key Terms and Definitions▪External: Marketing channel exists outside of the firm. Firms must use interorganizational management rather than intraorganizational management.▪Contactual organization: Refers to those firms or parties who are involved in the negotiatory functions. Negotiatory functions include: buying, selling, or transferring title from one firm to another.▪Operates: Involvement by management in the affairs of the channel.▪Distribution objectives: Management has certain distribution goals in mind such as distribution to particular retail stores of key products at or near key times.Use of the term Channel ManagerFew firms actually use this term in their job title descriptions. Figure 1.1 illustrates some of the titles used by selected U.S. firms that involve people in channel management. In fact, many different executives are involved in making channel decisions. In large consumer products companies, the people involved can include the V.P. of Marketing, general marketing manager, product or brand managers, sales managers, or regional sales manager. For industrial products, it might be the V.P. of Sales and V.P. of Marketing. For small business or franchisees, it might be the V.P. of Franchising or small business owner.Marketing Channel ConceptsKey Term and Definition▪Channel Manager: Provides a sense of focus for referring to the important role of channel decision-making within the firm. Anyone in the firm who is making channel decisions is, while involved in that activity, a channel manager.Marketing Channels and Marketing Management StrategyThe marketing mix model portra ys the marketing management process as a “strategic blending” of the four controllable marketing variables (product, price, promotion, and place). External uncontrollable elements include the economy, technology, government, sociocultural patterns of buyer behavior and competition.Channel strategy fits under “place” in the marketing management strategy and managers must operate their marketing channels in such a way as to support and enhance the other strategic variables in the marketing mix.Strategic alliances or partnerships have specific advantages:▪Long-term viability▪Cannot be copied quickly▪Cannot be duplicated with price▪Cannot be substituted with a clever idea or short-term promotional program(s) Channel Strategy versus Logistics ManagementChannel strategy and logistics management comprise the distribution variable of the marketing mix.Channel strategy is concerned with the entire process of setting up and operating the contactual organizations that are responsible for meeting the firm‟s distribution objectives.Logistics management more narrowly focuses on providing product availability at the appropriate place and time in the marketing channel.Channel strategy must first be established before logistics management should be considered. Logistic management is a subsidiary of channel management.Flows in Marketing Channels1.Product flow2.Negotiation flow3.Ownership flowrmation flow5.Promotion flowMarketing Channels 7e 1.Product flow is the actual physical movement of the product from the manufacturerthrough all of the parties to the consumer.2.Negotiation flow represents the interplay of the buying and selling functionsassociated with the transfer of title or rights of ownership. Negotiation is a two-way process involving mutual exchange between buyer and seller.3.Ownership flow is the movement of the title of the product from one stage in theprocess to another.rmation flow involves two directions – from the manufacturer to the consumerand from the consumer to the manufacturer. This flow includes transportation as information deemed necessary for the actual delivery of the product is communicated to the transportation agents.5.Promotion flow refers to the flow of persuasive communication in the form ofadvertising, personal selling, sales promotion and publicity. This flow adds theadvertising agency as an element of promotion.Distribution through IntermediariesEconomic considerations are very important in determining what form intermediaries will have in their appearance in marketing channels. Two important concepts are introduced: specialization and division of labor and contactual efficiency.▪Specialization and Division of LaborWhen applied to distribution, the concept is that of breaking down complex tasks into smaller, less complex ones and allocating them to parties who are specialists atperforming them at greater efficiencies.▪Contactual EfficiencyFrom a channel manager‟s viewpoint, contactual efficiency is the level of negotiation effort between sellers and buyers relative to achieving a distribution objective. Channel StructureKey Term and Definition▪Channel structure: The group of channel members to which a set of distribution tasks has been allocated.The channel manager is faced with allocation decisions, how to allocate or structure the task of distribution.Multi-channel strategy is when the firm has chosen to reach its target consumer through more than one channel. With the advent of E-commerce, many firms have opted to use multi-channel strategies to reach their target market.Marketing Channel ConceptsAncillary StructureThere are others that are not members of the channel structure that assist in the process. These other members will be defined as ancillary structure.Key Term and DefinitionAncillary structure: The group of institutions (facilitating agents) that assist channel members in performing distribution tasks.These ancillary members provide services to the channel members after the basic channel decisions have already been made.Examples of ancillary members include: banks, insurance agents, storage agents, contractors, repair shops, etc.Channel management must also deal with these ancillary members who do not have as great a stake in the channel as channel members but who are nevertheless key components in ensuring that the product is available to the consumer.。