TABLE OF CONTENTS
Chapter One Introduction
1.1 Background to the Study
1.2 Statement of the Problem
1.3 Objective of the Study
1.4 Research Questions
1.5 Significance of the Study
1.6 Scope of the Study
1.7 Methodology
1.8 Operational Definition of Terms
1.9 Organisation of Subsequent Chapters
Chapter Two Review of Literature
2.0 Introduction
2.1 Definition of usability
2.1.1 Attributes of usability
2.1.2 Importance of usability
2.1.3 The role of usability in digital libraries
2.2 Usability Evaluation Models
2.2.1 Usability in ISO 9126
2.2.2 ISO/IEC 9126-1
2.2.3 Usability in ISO 9241
2.2.4 ISO 9241-11
2.2.5 Dix et al usability evaluation model
Content
2.2.6 Nielsen usability evaluation model
2.2.7 Eason usability evaluation model
2.2.8 Enhanced usability evaluation model
2.2.9 Normative usability evaluation model
2.2.10 Modified Nielsen’s usability evaluation model
2.3 Usability evaluation methods
2.3.1 Card Sorting
2.3.2 Open card sort
2.3.3 Closed card sort
2.3.4 Cognitive walkthrough
2.3.5 Focus group
2.3.6 Think aloud
2.3.7 Contextual Inquiry
2.3.8 Heuristic evaluation
2.3.9 Questionnaire
2.4 Digital library
2.4.1 Role of digital library in Education
2.4.2 Sources of digital library
2.5 Review of closely related work on usability evaluation
Chapter Three Methodology
3.0 Introduction
3.1 Research Design
3.2 Population
3.2.1 UNILAG digital library
3.2.2 FCE. (T) Akoka digital library
3.2.3 LASPOTECH digital library
3.3 Sample size and sampling technique
3.4 Usability model design/development
3.5 Method of data collection
3.5.1 Think Aloud
3.5.2 Heuristic evaluation
Content
3.5.3 Modified heuristic think aloud method
3.5.4 Modified heuristic think aloud evaluation
3.6 Evaluation Tool
3.7 Tasks in Usability Testing
Chapter Four DATA ANALYSIS, Results and Discussion of Findings
4.0 Introduction
4.1 Results of Usability Tests
Research Question One
4.1.1 Discoverability Test
4.1.2 Cognitive Load Test
4.1.3 Learnability Test
4.1.4 Effectiveness Test
4.1.5 Efficiency Test
4.1.6 Satisfaction Test
Research Question Two
Chapter Five Summary, Conclusion and Recommendations
5.1 Summary
5.1.1 Summary of Findings
5.2 Conclusion
5.3 Recommendations
References