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Probability characteristics of nonlinear dynamical systems driven by δ -pulse noise

ABSTRACT For a nonlinear dynamical system described by the first-order differential equation with Poisson white noise having exponentially distributed amplitudes of δ pulses, some exact results for the stationary probability density function are derived from the Kolmogorov-Feller equation using the inverse differential operator. Specifically, we examine the “effect of normalization” of non-Gaussian noise by a […]

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PDRL at the 8th CIRP IPS2 Conference

The 8th CIRP IPS2 conference will kick-off this weekend with a Welcome reception at Chiostro Santa Marta, in the beautiful city of Bergamo, in Northern Italy CIRP IPS2 is a major yearly event for PDRL. The conference gathers researchers worldwide to share theoretical and practical experiences showing that transition towards Industrial Product-Service System. The conference this year is […]

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Evaluating Health Information Systems Using Ontologies

ABSTRACT Background: There are several frameworks that attempt to address the challenges of evaluation of health information systems by offering models, methods, and guidelines about what to evaluate, how to evaluate, and how to report the evaluation results. Model-based evaluation frameworks usually suggest universally applicable evaluation aspects but do not consider case-specific aspects. On the […]

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Urban Mining as a Case for PSS

ABSTRACT Reports about the depletion and pollutant of the earth by human interference and the increasing need for urbanised areas require us to think differently about how we go about achieving this increased urbanisation. In this context, urban mining, where demolition sites are mined for increased recycling and value extraction. Due to high specialisation of […]

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Experimenting the use of Value Models as Boundary Objects in Conceptual PSS Design

ABSTRACT The paper presents the results of experimental activities aiming at investigating the role of ‘value models’ as ‘boundary objects’ that facilitate cross-functional discussions in the PSS conceptual design phase. The experiment featured 6 separate sessions involving a total of 22 students in the final year of three different Master Programmes. In the sessions participants […]

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Virtual Modeling for Lifecycle Performance Assessment in Aerospace Design

ABSTRACT The aim of the paper is to present an approach for the multidisciplinary evaluation of alternative modular concepts in preliminary design with the intent of enhancing engineers’ capability to simulate alternative scenarios with different design configurations, so to derive decisions about the most valuable design concepts to further develop. The research contribution is novel […]

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Boundary objects for PSS Design

ABSTRACT In PSS design, hardware and service developers often have different objectives. Lacking to communicate and negotiate them across boundaries might lead to solutions unable to generate market shares and long-term profitability. This paper aims to contribute to the definition of ‘boundary objects’ that facilitate the sharing of knowledge between members of cross-functional teams engaged […]

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DESIGN 2016_Excellence in design

PDRL at 14th International DESIGN Conference

From May 16th to May 19th Alessandro Bertoni has represented PDRL at the 14th International DESIGN conference in Cavtat, Croatia. More than 300 participants from more than 30 countries have attended this biannual event gathering researchers and industrial practitioners worldwide to reach and share the current state-of-the-art of design research and practices. PDRL contribution consisted […]

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Powerful Modelling Techniques in ABAQUS to Simulate Failure of Laminated composites

ABSTRACT In this study, laminated composites consisting of LDPE (Low Density Polyethylene), Al-foil (Aluminum foil)and an adhesive interface layer is focused. The defects like necking in LDPE, Al-foil layer and interfacial delamination can significantly impact the loading capacity of the laminated material. However, the influence mechanisms of the defects are still unclear, and no appropriate […]

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Value-driven product service systems development: Methods and industrial applications

ABSTRACT In recent times a service-dominant logic is permeating the design of complex systems. However, in spite of their appeal, initiatives such as Product Service Systems (PSS) have not become mainstream, and methods are lacking to support this transition. This paper argues that methodological guidance, as well as tools for decision support, may be found […]

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