User Interface Design and Ergonomics - National Open University of ...

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MODULE 2 – USER INTERFACE DESIGN TECHNIQUES UNIT 1 – HUMAN CAPABILITIES IN USER INTERFACE DESIGN UNIT 2 – UNDERSTANDING USERS AND TASK ANALYSIS UNIT 3 - USER-CENTERED DESIGN UNIT 4 – INTERACTIVE DESIGN UNIT 5 – USABILITY UNIT 6 – INTERACTION STYLES AND GRAPHIC DESIGN PRINCIPLES MODULE 2 58
UNIT 1 HUMAN CAPABILITIES IN USER INTERFACE DESIGN Table of Contents 1.0 Introduction 2.0 Objectives 3.0 Main Content 3.1 Human Processor Model 3.2 Perception 3.3 Motor Skills 3.4 Colour 3.5 Attention 3.6 Error 4.0 Conclusion 5.0 Summary 6.0 Tutor Marked Assignment 7.0 Further Reading and Other Resources 1.0 INTRODUCTION This unit describes Human capabilities in User interface design. The concept of Human processor model is introduced alongside perception, motor skills, colour, attention and errors. 2.0 OBJECTIVES By the end this unit, you should be able to: • Explain the Human processor model • Describe various terms like perception, motor skills, e.tc • Explain the concepts of attention and errors 3.0 MAIN CONTENT 3.1 HUMAN PROCESSOR MODEL Human processor model is a cognitive modeling method used to calculate how long it takes to perform a certain task. Other cognitive modeling methods include parallel design, GOMS, and KLM (human-computer interaction). Cognitive modeling methods are one way to evaluate the usability of a product. This method uses experimental times to calculate cognitive and motor processing time. The value of the human processor model is that it allows a system designer to predict the performance with respect to time it takes a person to complete a task without performing experiments. Other modeling 59
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] NATIONAL OPEN UNIVERSITY OF NIGER
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National Open University of Nigeria
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Summary ...........................
Page 8 and 9: UNIT 3 - GRAPHICAL USER INTERFACE (
Page 10 and 11: Assignments File Tutor-Marked Assig
Page 12 and 13: 2 DESIGN and DESIGNING GOOD USER IN
Page 14 and 15: need both the study unit you are wo
Page 16 and 17: CIT 711: USER INTERFACE DESIGN AND
Page 18 and 19: UNIT 1 FUNDAMENTALS OF USER INTERFA
Page 20 and 21: 3.3 TYPES OF USER INTERFACES Curren
Page 22 and 23: 3.5 USER INTERFACE MODALITIES AND M
Page 24 and 25: Table of Contents 1.0 Introduction
Page 26 and 27: 3.1.1 DESIGNING A GOOD USER INTERFA
Page 28 and 29: widgets properly is to read and und
Page 30 and 31: Figure 1:- Showing that alignment o
Page 32 and 33: 6.0 TUTOR MARKED ASSIGNMENT a. How
Page 34 and 35: A graphical user interface is a typ
Page 36 and 37: Operating System. It is easy for a
Page 38 and 39: A list of items from which to selec
Page 40 and 41: collaborative work. For example, sc
Page 42 and 43: MODULE 1 UNIT 4 HUMAN COMPUTER INTE
Page 44 and 45: 3.3 DIFFERNCES WITH RELATED FIELDS
Page 46 and 47: window blinds to automobile braking
Page 48 and 49: Wickens, Christopher D., John D. Le
Page 50 and 51: The International Ergonomics Associ
Page 52 and 53: approach, the Gilbreths reduced the
Page 54 and 55: 3.6 BENEFITS OF ERGONOMICS The thre
Page 56 and 57: Another key to reducing lumbar disc
Page 60 and 61: methods include inspection methods,
Page 62 and 63: Determine time of each operation (b
Page 64 and 65: unable to understand new informatio
Page 66 and 67: M cones, or, misleadingly, green co
Page 68 and 69: Motor skill which is a learned seri
Page 70 and 71: MODULE 2 UNIT 2 UNDERSTANDING USERS
Page 72 and 73: The users of a system must be ident
Page 74 and 75: This example brings up an important
Page 76 and 77: whether you want to have a palette
Page 78 and 79: Task analysis which includes identi
Page 80 and 81: MODULE 2 UNIT 3 USER CENTERED DESIG
Page 82 and 83: or small body text is also hard to
Page 84 and 85: Introduction to User-centered desig
Page 86 and 87: organizations themselves. Interacti
Page 88 and 89: After thorough analysis using vario
Page 90 and 91: Interaction design which is the dis
Page 92 and 93: In human-computer interaction and c
Page 94 and 95: The preferred method for ensuring u
Page 96 and 97: 3.4 ISO STANDARDS FOR USABILITY ISO
Page 98 and 99: In this unit, you have been introdu
Page 100 and 101: affect the way the command is execu
Page 102 and 103: • Guides the user via the predefi
Page 104 and 105: The term direct manipulation was in
Page 106 and 107: There are two important reasons for
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108
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UNIT 1 PROTOTYPING Table of Content
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Figure 12: The iterative steps of p
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select print Figure 13: An interfac
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Ambler, S.W. & Constantine, L.L. (2
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3.2 LOW-FIDELITY PROTOTYPES Low-fid
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Figure 14:- Example of Sketching II
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Much more important for features th
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DENIM, an extension of SILK, is a t
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• Encourage menu & forms style, r
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Another problem is that native widg
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interfaces, so that a realistic sim
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UNIT 3 INPUT AND OUTPUT MODELS Tabl
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Recall that perceptual fusion means
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3.2 OUTPUT MODEL There are basicall
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directly-mapped pixel image will no
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Most stroke models also include som
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UNIT 4 MODEL VIEW-CONTROLLER (MVC)
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3.3.2 AS A DESIGN PATTERN MVC enco
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The Views are XForms controls for s
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UNIT 5 LAYOUTS AND CONSTRAINTS Tabl
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3.5 CONSTRAINTS Constraints are rel
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152
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MODULE 4 UNIT 1 TECHNIQUES FOR EVAL
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a. Card Sorting Card sorting is a w
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Rapid prototyping is a method used
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3.2.1 THE USE OF PROTOTYPES It is o
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Dumas, J.S. and Redish, J.C. (1999)
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the users' respect for you as a pro
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the users will be and what kind of
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speed whenever the average load was
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Table 4:- Table: Average times for
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phases: list the actions, and then
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Nielsen and Molich used their own e
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7.0 REFERENCES AND FURTHER READING
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users. If you do not, you can be ba
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If you are led to develop more and
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It's very easy to shape the comment
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a. Analyzing the Bottom-Line Number
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you use. But then you need some way
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ecruit test users with more similar
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MODULE 4 UNIT 4 OTHER EVALUATION IS
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3.2 CURRENT ISSUES CONCERNING EVALU
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2.0 OBJECTIVES By the end this unit
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It provides a real focal point for
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3.3.4 CONDUCTING THE TEST Having co
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The stages involved in usability te
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