The aim of this paper is to study the global reliability of communication networks. We assume that, in a communication network, the weights of the edges quantify the volume or the quality of the information transmitted by the nodes. In such a case, the strength of a path (resp. walk), called the reliability of the path (resp. walk) can be calculated as the product of the weights of the edges be...

This paper develops a risk-based integrated index that reflects power system reliability and security both directly and indirectly. Direct characteristics may express the risk to not fully supply load at various load levels and contingencies. Indirect characteristics address such undesirable conditions as circuit overloads, voltage problems, low stability margins, area interchange violations, i...

while sophisticated analytical methods like morgenstern-price or finite elementmethods are available for more realistic analysis of stability of slopes, assessment of the exactvalues of soil parameters is practically impossible. uncertainty in the soil parameters arisesfrom two different sources: scatter in data and systematic error inherent in the estimate of soilproperties. hence, stability o...

The structure of the construction project logistics system is decomposed in detail; some uncertain factors affecting system reliability are analyzed. This paper applies the probabilityinfluence coordinate graph to screen out the logistics subsystem that has great influence on system reliability under the conditions of occurring failure, and establishes an allocation model of the reliability ind...

Indexes of interrater reliability and agreement are reviewed and suggestions are made regarding their use in counseling psychology research. The distinction between agreement and reliability is clarified and the relationships between these indexes and the level of measurement and type of replication are discussed. Indexes of interrater reliability appropriate for use with ordinal and interval s...

In this research, called the “the maintenance index,” was proposed to evaluate the reliability of nuclear power plant safety systems by taking into account periodic maintenance of the systems. The change in reliability as a result of changing activity is estimated by this index. The Maintenance Index offers a more comprehensive evaluation of nuclear power plant safety. * Corresponding author, E...

accurate calculation of reliability index is very important for the reliability analysis of structures. in some limit state functions with nonlinear characteristic and several local optimum design points, the computational reliability methods may not appropriately determine the failure probability, and iterative reliability approaches may be converged to local optimum design points. in this pap...