BUS 782 Information Systems for Management.ppt

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1、BUS 782 Information Systems for Management,David Chao,Technology continues to advance,Samsung Galaxy S III smartphone: http:/ Two devices are able to communicate by touching, a feature called S Beam. Share photos, videos by touching another phone Now you dont have to give your number or email just t

2、o share files. A must need. A service enabled by NFC.,What is near field communication (NFC) technology?,NFC is a new wireless technology that enables data transmission between two objects when they are brought within a few inches of each other. Smartphones enabled with NFC technology can exchange d

3、ata with other NFC enabled devices or read information from smart tags embedded in posters, stickers and other products.,An important commercial use of NFC: NFC mobile payment technology,Samsung and Visa launched PayWave NFC app for London Olympics which used Visas PayWave system and Samsungs NFC mo

4、bile technology to enable contactless payments in and around the Olympic venues this summer.,Google Wallet http:/ Wallet is a free Android app on Google Play that turns your mobile phone into your virtual wallet, so you can tap, pay, and save in-store. NFC enabled devices NFC logo:,Information Techn

5、ology,Support day-to-day business operations Create new way of doing business Example: Making reservations United Airlines- http:/ Select your seats Web check-In Mobile check-in with web-enabled mobile phones : http:/ Save your check-in confirmation with the barcode on your mobile device,Technology

6、Life Cycle,Problem: Creates demand for solution Innovation may create demand Search and identify problems New application may create new problems Solution Service Competition: Yahoo Maps vs Google Maps Google Maps vs Apple Maps http:/ Apple iPhone vs Samsung Galaxy: http:/ Obsolete,Why study informa

7、tion systems?,An end-user perspective Enhance personal productivity, and the productivity of their work groups and department. Increase your opportunities for success: be aware of the management problems and opportunities presented by the information technology.,Why study information systems?,An ent

8、erprise perspective: Information systems play a vital role in the success of an enterprise. Efficient operations Effective management Competitive advantage,The Role of Information Systems in Business Today,Information Technology Capital Investment,Information technology investment, defined as hardwa

9、re, software, and communications equipment, grew from 34% to 50% between 1980 and 2004. Source: Based on data in U.S. Department of Commerce, Bureau of Economic Analysis, National Income and Product Accounts, 2006.,Techies might finally be able to move into top management,More Chief Information Offi

10、cers (CIOs) are reporting directly to CEOs. More CIOs are being included on management committees. In a recent survey of executives at capital market firms, 89% believed that technology managers would assume greater responsibilities.,Geek-Suit http:/www.nri.co.jp/english/opinion/papers/2009/pdf/np20

11、09143.pdf,Course Introduction,IT Introduction to information technology Computer hardware, software, network IT management IS Introduction to information systems Information system components Types of information systems PC personal computing Advanced spreadsheet techniques in decision support. Intr

12、oduction to database and database application development Internet techniques,What is Information Technology?,A term used to refer to a wide variety of items and abilities used in the creation, storage, and dispersal of data, information and knowledge. Data: Raw facts, figures, and details. Numerica

13、l, text, multimedia Information: An organized, meaningful, and useful interpretation of data. Summarized information from database Knowledge: Insight of a subject matter. Knowledge base Data mining,Raw data from a supermarket checkout counter can be processed and organized to produce meaningful info

14、rmation, such as the total unit sales of dish detergent or the total sales revenue from dish detergent for a specific store or sales territory.,Data and Information,Hardware,Input devices CPU and primary storage RAM - temporary storage Processor Control Unit - decoder Arithmetic & Logic Unit (ALU) O

15、utput devices Secondary storage devices Communication devices,Computer System Concept,Types of Computer Systems,Micro/Minicomputers Personal computing, workstation,network server. Departmental and workgroup systems, network server, workstation. Mainframes Speed: MIPS million instructions per second

16、26 MIPS to about 17,801 MIPS Enterprisewide systems for organizations have to deal with huge amounts of data. Giga-record or tera-record files are not unusual. Data mining and warehousing Supercomputers Speed: Floating-point operations per second 20 peta flops Supercomputers are often purpose-built

17、for one or a very few specific institutional tasks (E.g. Simulation and Modeling). Scientific calculations Networked computer systems WAN, LAN, PAN,Personal Area Network,A personal area network (PAN) is a computer network used for communication among computer devices (including telephones and person

18、al digital assistants) close to one person. The devices may or may not belong to the person in question. The reach of a PAN is typically a few meters. BlueTooth: It is an industrial specification for wireless PANs. Bluetooth provides a way to connect and exchange information between devices such as

19、mobile phones, laptops, PCs, printers, digital cameras and video game consoles via a short-range radio frequency.,Bluetooth Applications,Business applications: http:/ Device,Terabytes of storage RAID (Redundant Arrays of Inexpensive Disks): Arrays of disk drives that provides a fault tolerant capabi

20、lity by storing multiple copies of data on several disks. Mirroring,Storage Network,Storage Area Network, SAN: A storage area network is an architecture to attach remote computer storage devices to servers in such a way that the devices appear as locally attached to the operating system.,Data Center

21、,A data center is a facility used to house computer systems and associated components, such as telecommunications and storage systems. Modular Data Center Data Center Containers: Microsoft: http:/ Google: http:/ to put data center?,The cost of electric power, labor, taxes, natural disasters and land

22、 are key factors when choosing a data center location. http:/ http:/news.idg.no/cw/art.cfm?id=6ECF9E56-17A4-0F78-31EAB0750688E73E# http:/ Arctic chill brings Facebook data center to Sweden: http:/ Frequency Identification,RFID is a system for tagging and identifying objects. Antenna to send and rece

23、ive signals. RFID reader Applications: An alternative to bar code Supermarket Tracking objects http:/ RFID tag is small compared to current bar-code labels.,Passive & Active RFID,A passive RFID tag does not contain a battery; the power is supplied by the reader. When radio waves from the reader are

24、encountered by a passive rfid tag, the coiled antenna within the tag forms a magnetic field. The tag draws power from it, energizing the circuits in the tag. The tag then sends the information encoded in the tags memory. An active RFID tag is equipped with a battery that can be used as a partial or

25、complete source of power for the tags circuitry and antenna. Active RFID always broadcasts or beacons its signal.,A few interesting RFID applications,RFID tags help you to choose clothes http:/ Digital watermark to prevent counterfeit: http:/ software Operating system Application software University

26、s registration system Application development software,Operating system functions,User interface Resource management (managing hardware) Task management (managing the accomplishment of tasks) File management (managing data and program files) Utilities (providing a variety of supporting services),Cur

27、rent Operating Systems,Todays Operating Systems,Personal computers: IBM PC compatible: Microsoft windows, Unix-like systems such as Linux. Apple Macintosh: Mac OS X, Linux Workgroup computers: MS Windows Server, Mac OS X Server, Linux. Solaris Mainframe computers: IBM z/OS, Linux,Linux and Open Sour

28、ce,Linux has been more widely ported to different computing platforms than any other operating system. Linux is the most prominent example of free software and of open source development. Its underlying source code is available for anyone to use, modify, and redistribute freely, and in some instance

29、s the entire operating system consists of free/open source software.,Free Software: http:/www.gnu.org/,“Free software” is a matter of liberty, not price. To understand the concept, you should think of “free” as in “free speech”, not as in “free beer”. Free software is a matter of the users freedom t

30、o run, copy, distribute, study, change and improve the software. More precisely, it refers to four kinds of freedom, for the users of the software: The freedom to run the program, for any purpose (freedom 0). The freedom to study how the program works, and adapt it to your needs (freedom 1). Access

31、to the source code is a precondition for this. The freedom to redistribute copies so you can help your neighbor (freedom 2). The freedom to improve the program, and release your improvements to the public, so that the whole community benefits (freedom 3). Access to the source code is a precondition

32、for this.,Operating Systems for Mobile Devices,Mobile devices: Pocket PC/PDA Smartphones Tablet computer Smartphone Operating systems, the most important software in any smartphone: http:/ Windows Mobile, Windows Phone iOS for iPhone/iPad Android for Google phone,Virtualization,Virtualization is a t

33、echnology that makes it possible to run multiple operating systems and multiple applications on the same computer at the same time, increasing the utilization and flexibility of hardware. Average server utilization rate 10% Reduce costs Green computing A virtual machine is a software container that

34、can run its own operating systems and applications as if it were a physical computer. A virtual machine behaves exactly like a physical computer and contains its own virtual (ie, software-based) CPU, RAM hard disk and network interface card (NIC). An operating system cant tell the difference between

35、 a virtual machine and a physical machine, nor can applications or other computers on a network. Vendors: VMware, Parallels, etc.,Application development software,Low level language High level language third generation fourth generation Word processing, desktop publishing, spreadsheet, database mana

36、gement, graphic presentation, etc. MS Office OpenOffice.Org http:/www.openoffice.org/,A compiler translates a complete program into a set of binary instructions that the CPU can execute,Object-oriented development tools,Graphical user interface Component programming Event-driven programming Code gen

37、erator/Wizard Object example: Excels cell, chart Object-oriented tool examples: MicroSoft .Net: VB.Net, C# Java, C+, etc.,Portability Java: Write Once Run Anywhere,Java Source Code,Java Byte Code (Intermediate Code),Java Byte Code,Java Virtual Machine (JVM),Executable Code,Microsofts .Net,Language m

38、ust compliance with Common Language Specification, CLS. Compile the language into Microsoft Intermediate Language (MSIL) code. The MSIL code is then executed in the Common Language Runtime (CLR), which conceptually is same as the JVM, where it is translated into machine code by a compiler. Microsoft

39、 .Net is a server-side technology. It runs on any servers that implement the .Net system.,Software as a Service, SaaS,SaaS is a model of software deployment where an application is hosted as a service provided to customers across the Internet. SaaS alleviates the customers burden of software mainten

40、ance, ongoing operation, and support. no upfront investment in software development Conversely, customers relinquish control over software versions or changing requirements; Costs to use the service become a continuous expense, rather than a single expense at time of purchase.,Companies Offer SaaS,S

41、alesF: http:/ Workday: http:/ Google Docs: Demo: http:/ Login: Microsoft WindowsLive https:/ SkyDrive,What is cloud computing?,Cloud computing is a style of computing in which computing resources are provided as a service over the Internet. Users need not have knowledge of, expertise in, or control

42、 over the technology infrastructure in the “cloud“ that supports them. Video: http:/ of Cloud Computing,SaaS Utility computing Companies such as A, Sun, and IBM, now offer storage and virtual servers that others can access on demand. Platform as a service, PaaS This form of cloud computing delivers

43、development environments as a service. You build your own applications that run on the providers infrastructure and are delivered to your users via the Internet from the providers servers. Mainframe, Linux, Windows Server, etc.,Who owns the data?,Privacy: http:/ Facebook introduced a new terms of se

44、rvice agreement in Feb. 09: You hereby grant Facebook an irrevocable, perpetual, non-exclusive, transferable, fully paid, worldwide license (with the right to sublicense) to (a) use, copy, publish, stream, store, retain, publicly perform or display, transmit, scan, reformat, modify, edit, Security:

45、http:/ Top reasons why big businesses are reluctant to adopt SaaS : http:/ products, services, and business models: Business model: describes how company produces, delivers, and sells product or service to create wealth Information systems and technology a major enabling tool for new products, services, business models E.g. Netflixs Internet-based DVD rentals,