Using a high fidelity CCGT simulator for building prognostic systems

Pressure to reduce maintenance costs in power utilities has resulted in growing interest in prognostic monitoring systems. Accurate prediction of the occurrence of faults and failures would result not only in improved system maintenance schedules but also in improved availability and system efficiency. The desire for such a system has driven research into the emerging field of prognostics for complex systems. At the same time there is a general move towards implementing high fidelity simulators of complex systems especially within the power generation field, with the nuclear power industry taking the lead. Whilst the simulators mainly function in a training capacity, the high fidelity of the simulations can also allow representative data to be gathered. Using simulators in this way enables systems and components to be damaged, run to failure and reset all without cost or danger to personnel as well as allowing fault scenarios to be run faster than real time. Consequently, this allows failure data to be gathered which is normally otherwise unavailable or limited, enabling analysis and research of fault progression in critical and high value systems. This paper presents a case study of utilising a high fidelity industrial Combined Cycle Gas Turbine (CCGT) simulator to generate fault data, and shows how this can be employed to build a prognostic system. Advantages and disadvantages of this approach are discussed

Religious pluralism

Religious pluralism is one of the most vibrant topics within current philosophy of religion. This is in part due to the increasingly multi-, or poly-, cultural environment within which philosophy of religion is now practised and taught. More importantly though, it is because thinking about theories of religious pluralism requires that one engage with some of the deepest and most interesting questions lying at the heart of philosophy in general—questions about philosophical methodology, the nature of truth, logic, and language. While this chapter examines one highly influential form of religious pluralism and reviews some criticisms of that form, it seeks to go beyond a surface level discussion of the pros and cons of any particular pluralist theory in order to show where the deeper philosophical issues lie. It begins with some terminological considerations which will clarify further the focus of this chapter

Best practices for local mission work : developing effective and healthy mission in the church

https://place.asburyseminary.edu/ecommonsatsdissertations/2469/thumbnail.jp

NuSTAR observations of the young, energetic radio pulsar PSR B1509-58

We report on Nuclear Spectroscopic Telescope Array (NuSTAR) hard X-ray observations of the young rotation-powered radio pulsar PSR B1509$-$58 in the supernova remnant MSH 15$-$52. We confirm the previously reported curvature in the hard X-ray spectrum, showing that a log parabolic model provides a statistically superior fit to the spectrum compared with the standard power law. The log parabolic model describes the NuSTAR data, as well as previously published gamma-ray data obtained with COMPTEL and AGILE, all together spanning 3 keV through 500 MeV. Our spectral modelling allows us to constrain the peak of the broadband high energy spectrum to be at 2.6$\pm$0.8 MeV, an improvement of nearly an order of magnitude in precision over previous measurements. In addition, we calculate NuSTAR spectra in 26 pulse phase bins and confirm previously reported variations of photon indices with phase. Finally, we measure the pulsed fraction of PSR B1509$-$58 in the hard X-ray energy band for the first time. Using the energy resolved pulsed fraction results, we estimate that the pulsar's off-pulse emission has a photon index value between 1.26 and 1.96. Our results support a model in which the pulsar's lack of GeV emission is due to viewing geometry, with the X-rays originating from synchrotron emission from secondary pairs in the magnetosphere.Comment: 10 pages, 8 figures, 6 tables, ApJ accepte

Developing a serious game for PSS

Purpose: This paper presents the system architecture of a serious game, which is going to be run in parallel to Rolls Royce tra ining on product-service systems (PSS). Design/methodology/approach: The original game is outlined, requirements for an onl ine version are defined, and the architecture is proposed. Findings: The games approach has proven its value in design for service tra ining but an online version is needed to improve the opportunit ies to deliver the game. Originality/value: Such a system presents opportunities for the acquisition and development of specific professional knowledge, skills, and competencie

CONCEPTUAL METAPHORS AND THE SENSE OF KNOWING: EAST AND WEST: METÁFORAS CONCEITUAIS E O SENTIDO DO CONHECIMENTO: ORIENTE E OCIDENTE

 George Lakoff and Mark Johnson’s conceptual metaphor theory is a powerful methodological tool that has been used within many academic fields to investigate a wide range of questions concerning human cognition. Conceptual metaphor theory suggests that both our pre-theoretical sense of what it is to know something and our practices of knowledge acquisition will be shaped by whatever conceptual metaphors are at work within our cognitive processes, and that these may differ between cultures. I argue that regarding the natural sciences as extensions of a specific pre-theoretical sense of what it is to know, one that cognitively maps knowing onto the experience of seeing, contributes to an explanation of why modern science emerged in the West rather than in China. teoria da metáfora conceitual de George Lakoff and Mark Johnson é uma poderosa ferramenta metodológica que tem sido usada em diversos campos acadêmicos para investigar uma série de questões relativas à cognição humana. A teoria da metáfora conceitual sugere que tanto nosso sentido pré-teorico sobre o que é conhecer algo quanto nossas práticas de aquisição de conhecimento serão formados por metáforas conceituais, quaisquer que sejam elas, que operam nos nossos processos cognitivos, e estas podem diferir entre as culturas. Eu proponho que olhar para as ciências naturais como extensões de um sentido específico pré-teórico do que é o conhecer, aquele que mapeia cognitivamente o conhecimento sobre a experiência do ver, contribui para uma explicação de porque a ciência moderna emergiu no Ocidente e não na China