20,020 research outputs found

    Dynamical energy analysis on mesh grids: a new tool for describing the vibro-acoustic response of complex mechanical structures

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    We present a new approach for modelling noise and vibration in complex mechanical structures in the mid-to-high frequency regime. It is based on a dynamical energy analysis (DEA) formulation which extends standard techniques such as statistical energy analysis (SEA) towards non-diffusive wave fields. DEA takes into account the full directionality of the wave field and makes sub-structuring obsolete. It can thus be implemented on mesh grids commonly used, for example, in the finite element method (FEM). The resulting mesh based formulation of DEA can be implemented very efficiently using discrete flow mapping (DFM) as detailed in [1] and described here for applications in vibro-acoustics

    Knowledge of Persons

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    What is knowledge of persons, and what is knowing persons like? my answer combines Wittgenstein’s epistemology with levinas’s phenomenology. It says that our knowledge of persons is a hinge proposition for us. And it says that what this knowledge consists in is the experience that levinas calls ”the face to face’: direct and unmediated encounter between persons. As levinas says, for there to be persons at all there has, first, to be a relationship, language, and this same encounter: ”the face to face’ comes first, the existence of individual persons only second. I explore some consequences of this conception for how we think about personhood, and also for how we read Descartes and Augustine

    Theism in Historical Perspective

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    I will discuss some familiar problems in the philosophy of religion which arise for theistic belief. I will argue that it may be most worthwhile to focus on a particular sort of theistic belief, capital-T ’Theism’, central to which is a particular conception both of God and of the believer’s relation to God. At the heart of ’Theism’ in this sense is the continuing experience of God, both individual and collective. Compared with the evidence for Theistic belief that is provided by this experiential contact with God, most of the usually considered arguments for and against God’s existence are secondar

    The Objectivity of Ordinary Life

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    Metaethics tends to take for granted a bare Democritean world of atoms and the void, and then worry about how the human world that we all know can possibly be related to it or justified in its terms. I draw on Wittgenstein to show how completely upside-down this picture is, and make some moves towards turning it the right way up again. There may be a use for something like the bare-Democritean model in some of the sciences, but the picture has no standing as the basic objective truth about the world; if anything has that standing, it is ordinary life. I conclude with some thoughts about how the notion of bare, “thin” perception of non-evaluative reality feeds a number of philosophical pathologies, such as behaviourism, and show how a “thicker”, more value-laden, understanding of our perceptions of the world can be therapeutic against them
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