Frank Beichelt is a sessional lecturer at the University of Witwatersrand, where he was a professor of operations research before retiring in 2008. He was previously a professor of mathematics at Ingenieurhochschule Mittweida and an associate professor of reliability and maintenance theory at the University for Transportation and Communication "Friedrich List" Dresden. Extensively published in the field of stochastic modeling, Dr. Beichelt has authored nine books and coauthored three books.Peter Tittmann is a professor of mathematics at the University of Applied Sciences Mittweida. He teaches courses in linear algebra, discrete mathematics, graph theory, operations research, enumerative combinatorics, and network analysis. Dr. Tittman’s research interests include network reliability, graph theory, and combinatorics.

• COHERENT BINARY SYSTEMS: Fundamental System Structures. Complex Systems. Lifetime of Coherent Systems. NETWORK RELIABILITY: Modeling Network Reliability with Graphs. Reliability Analysis. Connectedness in Undirected Graphs. Partitions of the Vertex Set and Vertex Separators. Algorithmic Aspects of Network Reliability. MAINTENANCE MODELS: Random Point Processes in System Replacement. Time-Based System Replacement. System Replacement Based on Cost Limits. Maintenance Models with General Degree of Repair. Inspection of Systems. Bibliography. Index.

Frank Beichelt is a sessional lecturer at the University of Witwatersrand, where he was a professor of operations research before retiring in 2008. He was previously a professor of mathematics at Ingenieurhochschule Mittweida and an associate professor of reliability and maintenance theory at the University for Transportation and Communication "Friedrich List" Dresden. Extensively published in the field of stochastic modeling, Dr. Beichelt has authored nine books and coauthored three books.Peter Tittmann is a professor of mathematics at the University of Applied Sciences Mittweida. He teaches courses in linear algebra, discrete mathematics, graph theory, operations research, enumerative combinatorics, and network analysis. Dr. Tittman’s research interests include network reliability, graph theory, and combinatorics.

• COHERENT BINARY SYSTEMS: Fundamental System Structures. Complex Systems. Lifetime of Coherent Systems. NETWORK RELIABILITY: Modeling Network Reliability with Graphs. Reliability Analysis. Connectedness in Undirected Graphs. Partitions of the Vertex Set and Vertex Separators. Algorithmic Aspects of Network Reliability. MAINTENANCE MODELS: Random Point Processes in System Replacement. Time-Based System Replacement. System Replacement Based on Cost Limits. Maintenance Models with General Degree of Repair. Inspection of Systems. Bibliography. Index.