A new class of computational methods, referred to as decomposition methods, has been developed for predicting failure probability of structural and mechanical systems subject to random loads, material properties, and geometry. The methods involve a novel function decomposition that facilitates univariate and bivariate approximations of a general multivariate function, response surface generatio...

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There are two main goals in testing software: 1) to achieve adequate quality (debug testing); the objective is to probe the software for defects so that these can be removed and 2) to assess existing quality (operational testing); the objective is to gain confidence that the software is reliable. The names are arbitrary, and most testing techniques address both goals to some degree. However, de...

The use of operational pro®les and usage-based testing has received considerable attention recently in the software engineering literature. Testing under the actual operational pro®le can, however, be expensive, time consuming or even infeasible in situations where the performance of a system is dominated by infrequent but highly critical events. We consider a real application that deals with t...

Depending on the state of the stand-by equipment, can be distinguished loaded, non-loaded and partially loaded relief. In the case of loaded relief, the stand-by unit is in the same state as the operating unit and for this reason has the same intensity of breakdowns. In the partially loaded case, the stand-by device is loaded, but not so fully as the main equipment and for this reason has a dif...

1. Dr Keming Yu (Brunel University) Bayesian quantile regression and applications in energy research In recent years quantile regression has attracted a lot of applications in energy research, for example in electricity price forecasting, electricity demand analysis, energy consumption pattern study, wind power forecasting, gas flow, volatility and so on, but there are many uncertainties in for...

Every computer user is familiar with software bugs. Many seem to appear almost randomly, suggesting that the conditions triggering them must be complex, and some famous software bugs have been traced to highly unusual combinations of conditions. For example, the 1997 Mars Pathfinder mission began experiencing system resets at seemingly unpredictable times soon after it landed and began collecti...

Reliability allocation process may be described as the process of assigning reliability requirements to individual components within a system to attain the specified system reliability. For large systems, the allocation process is often performed at different stages of system design. The allocation process often begins at the conceptual stage. As the system design develops, more information abo...