Frequency-domain analysis is applied to a wave energy device composed of two coaxial axisymmetric bodies. For each frequency optimal damping coefficient values which maximize absorbed power are obtained. Several displacement amplitude restriction scenarios are considered. A stochastic model to...

We treat an industrial system which comprises of a number of identical components subject to wear-out. To support the system maintenance an appropriate inventory of spare components is needed. In order to plan the sufficient inventory of spare components, two variants of a simple stochastic...

In Emilia Romagna region (northern Italy), the Water Protection Plan (WPP) — a tool designed to reach the objectives of the Water Framework Directive — established different measures to achieve a good quantitative status of water bodies. The objective of this study is to evaluate the...

<p>We treat an industrial system which comprises of a number of identical components subject to wear-out. To support the system maintenance an appropriate inventory of spare components is needed. In order to plan the sufficient inventory of spare components, two variants of a simple stochastic...</p>

Purpose – The objective of the paper is to consider the problem of the strength of a manufactured item against stress, when the component follows Weibull failure law. Different cases of stress and strength with varying parameters are discussed for the Weibull‐Weibull stress‐strength model...

Purpose – Automated body condition scoring (BCS) through extraction of information from digital images has been demonstrated to be feasible; and commercial technologies are being developed. The primary objective of this research was to identify the factors that influence the potential...

The paper deals with the interesting topic of pricing energy structurated products which are traded in OTC market. The paper concentrates on a specific virtual asset, namely virtual power plant (VPP). The paper contains the definition of VPP, a description of the mathematical approach used in...

Despite the current volatility (early 2007), oil prices have experienced a persistently upward trend since 2004. By examining the cascading and stochastic models of herding, the paper looks at the role of herding and diminishing resources behind the volatility and rapid rise in oil prices. A...

In this paper, we address the optimal configuration of a capacitated production/inventory system with multiple products. The optimisation problem that we consider involves minimisation of the expected total inventory cost within the system subject to a service-level constraint. The functional...

Purpose – The purpose of this paper is to develop a model‐based methodology for the repetitive testing of multiple products with limited capacity, when the testing process is imperfect. Design/methodology/approach – In a repetitive testing process, items that are classified as...