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Summary
Summary
In this volume consideration was given to more advanced theoretical approaches and novel applications of reliability to ensure that topics having a futuristic impact were specifically included. Topics like finance, forensics, information, and orthopedics, as well as the more traditional reliability topics were purposefully undertaken to make this collection different from the existing books in reliability. The entries have been categorized into seven parts, each emphasizing a theme that seems poised for the future development of reliability as an academic discipline with relevance. The seven parts are networks and systems; recurrent events; information and design; failure rate function and burn-in; software reliability and random environments; reliability in composites and orthopedics, and reliability in finance and forensics. Embedded within the above are some of the other currently active topics such as causality, cascading, exchangeability, expert testimony, hierarchical modeling, optimization and survival analysis. These topics, when linked with utility theory, constitute the science base of risk analysis.
Table of Contents
Preface | p. ix |
Contributing Authors | p. xiii |
Part I Networks and Systems | |
1 The Signature of a Coherent System | p. 3 |
1.1 Introduction | p. 3 |
1.2 Related Concepts | p. 10 |
1.3 Comparison of Systems - Theory | p. 16 |
1.4 Comparison of Systems - Applications | p. 18 |
1.5 Discussion and Conclusions | p. 25 |
2 System Reliability Optimization: An Overview | p. 31 |
2.1 Introduction | p. 32 |
2.2 Redundancy Allocation | p. 34 |
2.3 Optimal Reliability-Redundancy Allocation | p. 41 |
2.4 Multi-Objective Optimization in Reliability System Design | p. 43 |
2.5 Optimal Assignment of Components in Coherent Systems | p. 45 |
2.6 Discussion | p. 47 |
3 Methods for Assessing Network Reliability | p. 55 |
3.1 Introduction | p. 55 |
3.2 Notation and Preliminaries | p. 55 |
3.3 Probability Measures for Component Reliability | p. 57 |
3.4 Identical Components and Borel's Paradox | p. 60 |
3.5 Calculating the Reliability of Networks with Unknown Structures | p. 61 |
3.6 Networks with Cascading Failures | p. 65 |
Part II Recurrent Events | |
4 Modelling Heterogeneity: Hierarchical Bayesian Approach | p. 71 |
4.1 Introduction | p. 72 |
4.2 Illustration 1: Valve Failures in Nuclear Power Plants | p. 74 |
4.3 Illustration 2: Repeated Occurrence of Relapses | p. 79 |
4.4 Concluding Remarks | p. 82 |
5 Spatial Neutral to the Right Processes | p. 87 |
5.1 Introduction | p. 88 |
5.2 NTR, Levy and Other Processes | p. 88 |
5.3 Spatial Neutral to the Right Process | p. 91 |
5.4 Total Time on Test Transform | p. 99 |
6 Models for Recurrent Events in Reliability and Survival Analysis | p. 105 |
6.1 Introduction | p. 105 |
6.2 Mathematical Framework | p. 107 |
6.3 Existing Models | p. 108 |
6.4 A New Class of Models | p. 112 |
6.5 Statistical Identifiability Issue | p. 118 |
Part III Information and Design | |
7 Information Functions for Reliability | p. 127 |
7.1 Introduction | p. 127 |
7.2 Discrimination Information Function | p. 128 |
7.3 Entropy | p. 137 |
7.4 Mutual Information | p. 141 |
7.5 Information in Residual Lifetime | p. 147 |
7.6 Information Statistics | p. 150 |
8 Experiments for Reliability Assessment and Improvement | p. 161 |
8.1 Introduction | p. 162 |
8.2 Accelerated Testing for Reliability Assessment | p. 163 |
8.3 Reliability Improvement | p. 168 |
8.4 Reliability Assessment and Improvement with Degradation Data | p. 174 |
9 Analysis of Computer and Physical Experimental Life Time Data | p. 183 |
9.1 Introduction | p. 184 |
9.2 The Basics of Data Integration Using RBHM | p. 186 |
9.3 Ball Bearing Example | p. 189 |
9.4 Conclusions | p. 190 |
Part IV The Failure Rate Function and Burn-in | |
10 The Shape of Failure Rate Mixtures | p. 197 |
10.1 Introduction | p. 197 |
10.2 Limiting Failure Rates of Mixtures | p. 199 |
10.3 Limiting Monotonicities of Failure Rates of Mixtures | p. 200 |
10.4 Anomalies | p. 202 |
10.5 Mixtures of Linear Failure Rates | p. 203 |
10.6 Mixtures of Additive and Multiplicative Failure Rates | p. 204 |
10.7 Related Results on Bathtub Shape | p. 204 |
11 Burn-in-Sequential Stop and Go Strategies | p. 207 |
11.1 Introduction | p. 207 |
11.2 Sequential Burn-in for Different Components with Independent Life-times | p. 210 |
11.3 Sequential Burn-in for Similar Components with Dependent Life-times | p. 218 |
Part V Software Reliability and Random Environments | |
12 Managing Software Development Process | p. 233 |
12.1 Introduction | p. 233 |
12.2 Background | p. 235 |
12.3 Incremental Development Concept | p. 235 |
12.4 Derivation of the Basic Coordination Policy | p. 236 |
12.5 Incremental Development under the Effect of System Size Growth | p. 240 |
12.6 Conclusion | p. 244 |
13 Reliability Modeling and Analysis in Random Environments | p. 249 |
13.1 Introduction and Overview | p. 249 |
13.2 Continuous Time Models with Intrinsic Aging | p. 252 |
13.3 Continuous Time Models in Software Reliability Engineering | p. 255 |
13.4 Discrete Time Models | p. 262 |
Part VI Reliability in Composites and Orthopedics | |
14 Failure of Brittle Fibers and Composites | p. 277 |
14.1 Introduction | p. 277 |
14.2 Failure Rate Properties of Strength Distributions of Load-Sharing Systems | p. 279 |
14.3 Cumulative Damage Models and Inference Procedures | p. 281 |
14.4 Examples: Tensile Strength of Materials | p. 285 |
15 Modeling the Reliability of Hip Replacements | p. 291 |
15.1 Introduction | p. 291 |
15.2 Data and a Model | p. 292 |
15.3 Model Fitting and Checking | p. 293 |
15.4 Reliability Prediction | p. 296 |
15.5 Conclusions | p. 299 |
Part VII Reliability in Finance and Forensics | |
16 The Price of Failure | p. 303 |
16.1 Introduction | p. 303 |
16.2 Financial Fundamentals | p. 304 |
16.3 Parameter Estimation | p. 306 |
16.4 Derivatives | p. 307 |
16.5 Application of Reliability Models | p. 311 |
17 Warranty: A Surrogate of Reliability | p. 317 |
17.1 Introduction: Terminology | p. 317 |
17.2 Equilibrium Probabilities and "Just" Warranties | p. 318 |
17.3 Failure Models Indexed by Time and Usage | p. 324 |
17.4 Forecasting Financial Reserves for Warranty Claims | p. 327 |
17.5 Summary and Conclusions | p. 330 |