信息系统Information-Systems-“课程-6课件.ppt

1、14.1 2010 by Prentice Hall14.2 2010 by Prentice HallLEARNING OBJECTIVESIdentify and describe the objectives of project management and why it is so essential in developing information systems.Compare methods for selecting and evaluating information systems projects and methods for aligning them with

2、the firms business goals.Describe how firms can assess the business value of information systems projects.Analyze the principal risk factors in information systems projects.Select appropriate strategies for managing project risk and system implementation.14.3 2010 by Prentice HallMcKessons Prescript

3、ion for Project ManagementProblem:Inconsistent,fragmented data in multiple sources hampering operational efficiency and decision making for order processing and inventory managementSolutions:Replace existing systems with common business intelligence infrastructure with single enterprise data warehou

4、se Massive project completed in under 2 years due to use of sound project management practices Demonstrates project managements role in reducing projects costs and completion times14.4 2010 by Prentice Hall Runaway projects and system failure Runaway projects:30-40%IT projects Exceed schedule,budget

5、 Fail to perform as specified Types of system failure Fail to capture essential business requirements Fail to provide organizational benefits Complicated,poorly organized user interface Inaccurate or inconsistent dataThe Importance of Project Management14.5 2010 by Prentice HallFigure 14-1Without pr

6、oper management,a systems development project takes longer to complete and most often exceeds the allocated budget.The resulting information system most likely is technically inferior and may not be able to demonstrate any benefits to the organization.The Importance of Project Management14.6 2010 by

7、 Prentice HallThe Importance of Project Management Project management Activities include planning work,assessing risk,estimating resources required,organizing the work,assigning tasks,controlling project execution,reporting progress,analyzing results Five major variables Scope Time Cost Quality Risk

8、14.7 2010 by Prentice Hall Read the Interactive Session:Management,and then discuss the following questions:Classify and describe the problems Kaiser faced in setting up the transplant center.What was the role of information systems and information management in these problems?What were the manageme

9、nt,organization,and technology factors responsible for these problems?What steps would you have taken to increase the projects chances for success?Were there any ethical problems created by this failed project?Explain your answerKaiser Permanente Botches Its Kidney Transplant Center ProjectManaging

10、Project Risk14.8 2010 by Prentice Hall Management structure for information systems projects Hierarchy in large firms Corporate strategic planning group Responsible for firms strategic plan Information systems steering committee Reviews and approves plans for systems in all divisions Project managem

11、ent group Responsible for overseeing specific projects Project team Responsible for individual systems projectSelecting Projects14.9 2010 by Prentice HallFigure 14-2Each level of management in the hierarchy is responsible for specific aspects of systems projects,and this structure helps give priorit

12、y to the most important systems projects for the organization.Selecting Projects14.10 2010 by Prentice Hall Linking systems projects to the business plan Information systems plan:Road map indicating direction of systems development,includes:Purpose of plan Strategic business plan rationale Current s

13、ystems/situation New developments to consider Management strategy Implementation plan BudgetSelecting Projects14.11 2010 by Prentice Hall In order to plan effectively,firms need to inventory and document existing software,hardware,systems To develop effective information systems plan,organization mu

14、st have clear understanding of both long-term and short-term information requirements Strategic analysis or critical success factors(CSF)approach Sees information requirements as determined by a small number of critical success factors Auto industry CSFs might include styling,quality,costSelecting P

15、rojects14.12 2010 by Prentice Hall Critical success factors Principal method:Interviews with 3-4 top managers to identify goals and resulting CSFs Personal CSFs aggregated into small number of firm CSFs Systems built to deliver information on CSFs Suitable for top management,building DSS and ESS Dis

16、advantages:No clear methods for aggregation of personal CSFs into firm CSFs Confusion between individual CSFs and organizational CSFs Bias towards top managersSelecting Projects14.13 2010 by Prentice HallFigure 14-3The CSF approach relies on interviews with key managers to identify their CSFs.Indivi

17、dual CSFs are aggregated to develop CSFs for the entire firm.Systems can then be built to deliver information on these CSFs.Selecting Projects14.14 2010 by Prentice Hall Portfolio analysis Used to evaluate alternative system projects Inventories all of the organizations information systems projects

18、and assets Each system has profile of risk and benefit High-benefit,low risk High-benefit,high risk Low-benefit,low risk Low-benefit,high risk To improve return on portfolio,balance risk and return from systems investmentsSelecting Projects14.15 2010 by Prentice HallFigure 14-4Companies should exami

19、ne their portfolio of projects in terms of potential benefits and likely risks.Certain kinds of projects should be avoided altogether and others developed rapidly.There is no ideal mix.Companies in different industries have different profiles.Selecting Projects14.16 2010 by Prentice HallSelecting Pr

20、ojects Scoring models Used to evaluate alternative system projects,especially when many criteria exist Assigns weights to various features of system and calculates weighted totalsCRITERIAWEIGHTSYSTEM A%SYSTEM A SCORESYSTEM B%SYSTEM B SCOREOnline order entry46726873292Customer credit check36619859177

21、Inventory check47228881324Warehouse receiving27114275150ETCGRAND TOTALS3128330014.17 2010 by Prentice Hall Information system costs and benefitsTangible benefits:Can be quantified and assigned monetary valueSystems that displace labor and save space:Transaction and clerical systemsIntangible benefit

22、s:Cannot be immediately quantified but may lead to quantifiable gains in the long run E.g.,more efficient customer service or enhanced decision makingSystems that influence decision making:ESS,DSS,collaborative work systemsEstablishing the Business Value of Information Systems14.18 2010 by Prentice

23、Hall Capital budgeting for information systems Capital budgeting models:Measure value of investing in long-term capital investment projects Rely on measures the firms Cash outflows Expenditures for hardware,software,labor Cash inflows Increased sales Reduced costs There are various capital budgeting

24、 models used for IT projects:Payback method,accounting rate of return on investment,net present value,internal rate of return(IRR)Establishing the Business Value of Information Systems14.19 2010 by Prentice Hall Real options pricing models(ROPM)Can be used when future revenue streams of IT projects

25、are uncertain and up-front costs are high Use concept of options valuation borrowed from financial industry Gives managers flexibility to stage IT investment or test the waters with small pilot projects or prototypes to gain more knowledge about risks before investing in entire implementation Limita

26、tions of financial models Do not take into account social and organizational dimensions that may affect costs and benefitsEstablishing the Business Value of Information Systems14.20 2010 by Prentice Hall Dimensions of project risk Level of project risk influenced by:Project size Indicated by cost,ti

27、me,number of organizational units affected Organizational complexity also an issue Project structure Structured,defined requirements run lower risk Experience with technologyManaging Project Risk14.21 2010 by Prentice Hall Change management Required for successful system building New information sys

28、tems have powerful behavioral and organizational impact Changes in how information is used often lead to new distributions of authority and power Internal organizational change breeds resistance and oppositionManaging Project Risk14.22 2010 by Prentice Hall Implementation All organizational activiti

29、es working toward adoption,management,and routinization of an innovation Change agent:One role of systems analyst Redefines the configurations,interactions,job activities,and power relationships of organizational groups Catalyst for entire change process Responsible for ensuring that all parties inv

30、olved accept changes created by new systemManaging Project Risk14.23 2010 by Prentice Hall Role of end users With high levels of user involvement System more likely to conform to requirements Users more likely to accept system User-designer communication gap:Users and information systems specialists

31、 Different backgrounds,interests,and priorities Different loyalties,priorities,vocabularies Different concerns regarding a new systemManaging Project Risk14.24 2010 by Prentice Hall Management support and commitment Positive perception by both users and technical staff Ensures sufficient funding and

32、 resources Enforcement of required organizational changesManaging Project Risk14.25 2010 by Prentice Hall Very high failure rate among enterprise application and BPR projects(up to 70%for BPR)Poor implementation and change management practices Employees concerns about change Resistance by key manage

33、rs Changing job functions,career paths,recruitment practices Mergers and acquisitions Similarly high failure rate of integration projects Merging of systems of two companies requires:Considerable organizational change Complex systems projectsManaging Project Risk14.26 2010 by Prentice Hall Controlli

34、ng risk factors First step in managing project risk involves identifying nature and level of risk of project Each project can then be managed with tools and risk-management approaches geared to level of risk Managing technical complexity Internal integration tools Project leaders with technical and

35、administrative experience Highly experienced team members Frequent team meetings Securing of technical experience outside firm if necessaryManaging Project Risk14.27 2010 by Prentice Hall Formal planning and control tools Document and monitor project plans Help identify bottlenecks and determine imp

36、act of problems on project completion times Chart progress of project against budgets and target dates Gantt chart Lists project activities and corresponding start and completion dates Visual representation of timing of tasks and resources required PERT chart Portrays project as network diagram Node

37、s represent tasks Arrows depict task dependenciesManaging Project Risk14.28 2010 by Prentice HallFigure 14-5AThe Gantt chart in this figure shows the task,person-days,and initials of each responsible person,as well as the start and finish dates for each task.The resource summary provides a good mana

38、ger with the total person-days for each month and for each person working on the project to manage the project successfully.The project described here is a data administration project.Managing Project Risk14.29 2010 by Prentice HallFigure 14-5BManaging Project Risk14.30 2010 by Prentice HallFigure 1

39、4-5CManaging Project Risk14.31 2010 by Prentice HallFigure 14-6This is a simplified PERT chart for creating a small Web site.It shows the ordering of project tasks and the relationship of a task with preceding and succeeding tasks.Managing Project Risk14.32 2010 by Prentice Hall Increasing user invo

40、lvement and overcoming user resistance External integration tools consist of ways to link work of implementation team to users at all organizational levels Active involvement of users Implementation teams responsiveness to users User resistance to organizational change Users may believe change is de

41、trimental to their interests Counterimplementation:Deliberate strategy to thwart implementation of an information system or an innovation in an organization E.g.,increased error rates,disruptions,turnover,sabotageManaging Project Risk14.33 2010 by Prentice Hall Strategies to overcome user resistance

42、 User participation User education and training Management edicts and policies Incentives for cooperation Improvement of end-user interface Resolution of organizational problems prior to introduction of new systemManaging Project Risk14.34 2010 by Prentice Hall Read the Interactive Session:Organizat

43、ions,and then discuss the following questions:Identify the risks in the BioSense project.What management,organization,and technology factors explain why this project has been difficult to implement.Is the CDCs new approach to improving pandemic warnings a viable solution?Why or why not?Why Cant BioS

44、ense Take Off?Managing Project Risk14.35 2010 by Prentice Hall Designing for the organization Information system projects must address ways in which organization changes when new system installed Procedural changes Job functions Organizational structure Power relationships Work structure Ergonomics:

45、Interaction of people and machines in work environment Design of jobs Health issues End-user interfacesManaging Project Risk14.36 2010 by Prentice Hall Organizational impact analysis How system will affect organizational structure,attitudes,decision making,operations Sociotechnical design Addresses

46、human and organizational issues Separate sets of technical and social design solutions Final design is solution that best meets both technical and social objectivesManaging Project Risk14.37 2010 by Prentice Hall Project management software Can automate many aspects of project management Capabilitie

47、s for Defining,ordering,editing tasks Assigning resources to tasks Tracking progress Microsoft Project Most widely used project management software PERT,Gantt charts Critical path analysis Product Guide wizards Enterprise Project Management Solution versionManaging Project Risk14.38 2010 by Prentice

48、 HallAll rights reserved.No part of this publication may be reproduced,stored in a retrieval system,or transmitted,in any form or by any means,electronic,mechanical,photocopying,recording,or otherwise,without the prior written permission of the publisher.Printed in the United States of America.Copyright 2010 Pearson Education,Inc.Publishing as Prentice Hall