Emergency preparedness is of paramount importance in successful emergency responses at sea. Therefore, drills are regularly conducted to maintain acceptable levels preparedness. However, it needs be considered that drill operations themselves include significant risks, and there no evidence these risks appropriately when planning operations. Human error one the main contributors accidents durin...

In this paper, the dynamic response of a vibratory system equipped with a single-unit impact damper is analyzed. The reliability behavior of this system is investigated when the stress and strength are distributed lognormally. The standard deviation of lognormal stress is realistically calculated by applying external noise and an uncertainty parameter in the simulated model. Variations of the d...

The implementation of Hierarchical Timed Petri Net (HTPN) in our system modelling tool yields a hierarchical analysis method, namely a Hierarchical Reachability State Diagram (HRSD). A Reachability State Diagram (RSD) can be generated for each subnet, and the number of tokens in each H-Block are also record in the state markings. Since the intention of using a HTPN hierarchical representation i...

This is the second in a series of five papers describing the information, decision, and action in crew context (IDAC) model for human reliability analysis. An example application of this modeling technique is also discussed in this series. The model is developed to probabilistically predict the responses of the nuclear power plant control room operating crew in accident conditions. The operator...

The study of diagrammatic reasoning often focuses on computational models of diagram use rather than on studies of human performance. This paper considers diagrams as a notational system that can be used and studied in an experimental context. It presents a review of the experimental psychology literature rather than a complete theoretical framework, and is intended as an introduction to the fi...

The Flory-Huggins interaction is measured for a model rod-coil block copolymer system, poly(alkoxyphenylenevinylene-b-isoprene), by fitting the interfacial segregation of block copolymer to a homopolymer interface and by using the random phase approximation (RPA) for block copolymers. The measured interfacial segregation of a block copolymer to the interface between homopolymers, fit with a sel...

The reliability diagram is a common diagnostic graph used to summarise and evaluate probabilistic forecasts. Its strengths lie in the ease with which it is produced and the transparency of its definition. While visually appealing, major long noted shortcomings lie in the difficulty of interpreting the graph visually; for the most part, ambiguities arise from variation in the distribution of for...

Wave power is a potential technology for generating sustainable renewable energy. Several types of wave energy converters (WECs) have been proposed this purpose. WECs operate in harsh maritime environment that sets strict limitations on how and when the device can be economically safely reached maintenance. Thus, to ensure profitable generation over system life cycle, reliability key aspect con...

Reliability is an increasingly important aspect in the design of systems, especially networks and service offerings. Optimization here is a multi-criteria process finding the right compromise between cost and quality. At the same time, results should be explored online, either as part of interactive, user-centric design tools or for Web based service negotiation. In this paper we consider a gen...

This paper considers the eeect of site perturbations on Voronoi diagrams, where the sites are points in the plane. Given a bound on the distance that any site may move, we ask which pairs of Voronoi neighbors may become non-neighbors and which are guaranteed to remain neighbors. A pair of the second kind is called stable. The paper shows necessary and suucient conditions for stability. Algorith...