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Iterative - Human Resource - Lecture Slides, Slides of Human Resource Management

Bharat Ratna Dr. B. R. Ambedkar UniversityHuman Resource Management

Human Resource is an integral part of Management Science. In these Lecture Slides of HRM, following key concepts are discussed : Iterative, Metrics, Goals Achieved, Features Used, Percentage, Functions Learned, Error Tolerance, Learnability, Trained Users, Satisfaction

Typology: Slides

2012/2013

Uploaded on 07/26/2013

ramana
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some metrics from ISO 9241
Usability Effectiveness Efficiency Satisfaction
objective measures measures measures
Suitability Percentage of Time to Rating scale
for the task goals achieved complete a task for satisfaction
Appropriate for Number of power Relative efficiency Rating scale for
trained users features used compared with satisfaction with
an expert user power features
Learnability Percentage of Time to learn Rating scale for
functions learned criterion ease of learning
Error tolerance Percentage of Time spent on Rating scale for
errors corrected correcting errors error handling
successfully
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some metrics from ISO 9241

Usability Effectiveness Efficiency Satisfaction objective measures measures measures

Suitability Percentage of Time to Rating scale for the task goals achieved complete a task for satisfaction

Appropriate for Number of power Relative efficiency Rating scale for trained users features used compared with satisfaction with an expert user power features

Learnability Percentage of Time to learn Rating scale for functions learned criterion ease of learning

Error tolerance Percentage of Time spent on Rating scale for errors corrected correcting errors error handling successfully

Iterative design and

prototyping

  • Iterative design overcomes inherent problems of incomplete

requirements

  • Prototypes
    • simulate or animate some features of intended system
    • different types of prototypes
      • throw-away
      • incremental
      • evolutionary
  • Management issues
    • time
    • planning
    • non-functional features
    • contracts

Design rationale

Design rationale is information that explains why

a computer system is the way it is.

Benefits of design rationale

– communication throughout life cycle

– reuse of design knowledge across products

– enforces design discipline

– presents arguments for design trade-offs

– organizes potentially large design space

– capturing contextual information

Design rationale (cont’d)

Types of DR:

• Process-oriented

– preserves order of deliberation and decision-making

• Structure-oriented

– emphasizes post hoc structuring of considered

design alternatives

• Two examples:

– Issue-based information system (IBIS)

– Design space analysis

structure of gIBIS

Sub-issue

Issue

Sub-issue

Sub-issue

Position

Position

Argument

Argument

responds to

responds to objects to

supports

questions

generalizes

specializes

Design space analysis

• structure-oriented

• QOC – hierarchical structure:

questions (and sub-questions)

  • represent major issues of a design

options

  • provide alternative solutions to the question

criteria

  • the means to assess the options in order to make a choice

• DRL – similar to QOC with a larger language

and more formal semantics

Psychological design rationale

• to support task-artefact cycle in which user tasks are

affected by the systems they use

• aims to make explicit consequences of design for users

• designers identify tasks system will support

• scenarios are suggested to test task

• users are observed on system

• psychological claims of system made explicit

• negative aspects of design can be used to improve next

iteration of design