| Foreword | 6 |
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| Preface | 8 |
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| Overview | 9 |
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| Table of Contents | 11 |
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| Index of Appendixes | 14 |
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| List of Figures | 15 |
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| List of Tables | 18 |
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| List of Abbreviations | 19 |
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| 1 Problem Set and Course of Investigation | 21 |
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| 1.1 Supply Management’s Bottom Line Impact – A Never Ending Issue? | 21 |
| 1.2 Objectives and Research Questions of his hesis | 25 |
| 1.3 Course of Investigation | 26 |
| 2 Supply Management’s Financial Effectiveness – ‘The Story Behind it’ | 29 |
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| 2.1 Supply Management’s Role and Corporate Value Contribution | 29 |
| 2.1.1 Effective Supply Management – Key for Becoming an Equal Business Partner | 30 |
| 2.1.2 Purchasing Performance Versus Performance of Purchasing – A Modified Understanding of Supply Management’s Value Contributi | 33 |
| 2.1.3 Different Issue, Participants, and Interests – A Principal Agent Perspective | 37 |
| 2.2 Supply Management’s Financial Effectiveness – Return on Spend | 40 |
| 2.2.1 Discussion of Different Performance Management Systems as Potential Role Models for Supply Management’s Effectiveness Indicator | 40 |
| 2.2.2 Discussion of Different Financial Performance Indicators as Potential Role Models for Supply Management’s Financial Effectiveness Indicator | 45 |
| 2.2.3 Supply Management’s Budget Effects as Refined Savings and Basis for Financial Effectiveness Measurement – An Integrated Budgeting Approach | 55 |
| 2.3 Design Implications for Measuring Supply Management’s Budget Effects | 64 |
| 2.3.1 Process-Related Implications – A First Draft of an Integrated Budget Effects Measurement Process | 64 |
| 2.3.2 Organisational Implications – The Consideration of Soft Factors Within the Context of Change | 69 |
| 2.3.3 Research Design and Process from the Design Sciences Perspective | 71 |
| 2.4 Interim Result: Return on Spend as Newly Defined Indicator of Supply Management’s Financial Effectiveness | 80 |
| 3 Measurement of Supply Management’s Bottom Line Impact: Status Quo and Future Requirements | 82 |
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| 3.1 Quantitative Methodology | 82 |
| 3.1.1 Questionnaire Design | 83 |
| 3.1.2 Data Collection | 85 |
| 3.1.3 Sampling | 86 |
| 3.2 Status Quo of Savings Measurement Practices | 87 |
| 3.2.1 Sample Characteristics | 88 |
| 3.2.2 The Relevance of Measuring Supply Management’s Bottom Line Impact | 89 |
| 3.2.3 Current Savings Measurement Practices | 91 |
| 3.3 Requirements for Supply Management’s Budget Effects Measurement | 98 |
| 3.3.1 Components’ Relevance for an Adequate Measurement Approach | 99 |
| 3.3.2 Dependence of Measurement Certainty on Specific Measurement Components | 102 |
| 3.3.3 Desig
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