35,767 research outputs found

    Dimensional Analysis and Weak Turbulence

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    In the study of weakly turbulent wave systems possessing incomplete self-similarity it is possible to use dimensional arguments to derive the scaling exponents of the Kolmogorov-Zakharov spectra, provided the order of the resonant wave interactions responsible for nonlinear energy transfer is known. Furthermore one can easily derive conditions for the breakdown of the weak turbulence approximation. It is found that for incompletely self-similar systems dominated by three wave interactions, the weak turbulence approximation usually cannot break down at small scales. It follows that such systems cannot exhibit small scale intermittency. For systems dominated by four wave interactions, the incomplete self-similarity property implies that the scaling of the interaction coefficient depends only on the physical dimension of the system. These results are used to build a complete picture of the scaling properties of the surface wave problem where both gravity and surface tension play a role. We argue that, for large values of the energy flux, there should be two weakly turbulent scaling regions matched together via a region of strongly nonlinear turbulence.Comment: revtex4, 10 pages, 1 figur

    Re-visions of rationality?

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    Empirical evidence suggests proponents of the ‘adaptive toolbox’ framework of human judgment need to rethink their vision of rationality

    Democratising biotechnology?: Deliberation, participation and social regulation in a neo-liberal world

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    There is now significant policy and academic interest in the governance of science and technology for sustainable development. In recent years this has come to include a growing emphasis on issues of public understanding of science and innovative processes of deliberative and inclusive policy-making around controversial technologies such as nuclear power and agricultural biotechnology. Concern with such issues coincides with rising levels of interest in deliberative democracy and its relationship to the structures and processes of global governance. This article connects these two areas through a critical examination of ‘global’ deliberations about agricultural biotechnology and its risks and benefits. It draws on an extensive survey concerned with the diverse ways in which a range of governments are interpreting and implementing their commitments under the Cartagena Protocol on Biosafety regarding public participation and consultation in order to assess the potential to create forms of deliberation through these means. The article explores both the limitations of public deliberation within global governance institutions as well as of projects whose aim is to impose participation from above through international law by advocating model approaches and policy ‘tool kits’ that are insensitive to vast differences between countries in terms of capacity, resources and political culture

    The political economy of global environmental governance

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    This article develops a political economy account of global environmental governance to improve upon our understanding of the contemporary conduct of environmental politics and to clarify thinking about the potential for, and barriers to, effective environmental reform. By elaborating the key contours of a political economy account on the one hand and opening up to critical enquiry prevailing understandings of what is meant by ‘global’ ‘environmental’ and ‘governance’ on the other, such an approach is able to enhance our understanding of the practice of environmental governance by emphasising historical, material and political elements of its (re) constitution and evolution

    Response and Responsibility - Chapter 1 of The Feeling Intellect: Reading the Bible with C.S. Lewis

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    In the sixth month the angel Gabriel was sent by God to a town in Galilee called Nazareth, to a virgin engaged to a man whose name was Joseph, of the house of David. The virgin\u27s name was Mary. And he came to her and said, Greetings, favored one! The Lord is with you. But she was much perplexed by his words and pondered what sort of greeting this might be. The angel said to her, Do not be afraid, Mary, for you have found favor with God. And now, you will conceive in your womb and bear a son, and you will name him Jesus. He will be great and will be called the Son of the Most High, and the Lord God will give to him the throne of his ancestor David ... Mary said to the angel, How can this be, since I am a virgin? The angel said to her, The Holy Spirit will come upon you and the power of the Most High will overshadow you; therefore the child to be born will be holy; he will be called the Son of God. And now your relative Elizabeth in her old age has also conceived a son; and this is the sixth month for her who was said to be barren. For nothing will be impossible with God:\u27 Then Mary said, Here am I, the servant of the Lord; let it be with me according to your word:\u27 Then the angel departed from her (Luke 1:26-38)

    Bostonia. Volume 23

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    Founded in 1900, Bostonia magazine is Boston University's main alumni publication, which covers alumni and student life, as well as university activities, events, and programs

    Against the Stream, How Karl Barth Reframed Church-State Relations (Chapter 3 of Keine Gewalt! No Violence!)

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    Excerpt: Defenders of the Barmen Declaration\u27s apolitical tone remind us that it was never intended to establish a program of political protest, that Karl Barth and the others were pastors not politicians; that the goal was to reassert the integrity of the gospel in the face of the attempted subversion by the German Christians. On the one hand, the soundness of this interpretation is self-evident. And yet it should surprise no one that an apolitical strategy would have little political impact on the German state. It is also true that Barth\u27s views on church and state relations changed after Barmen; that afterward he expressed remorse over his own sins of omission. If we explore Barth\u27s writings over a twenty-year period, the change will become evident and so also his impact on the emerging political theology in Eastern Europe. The next two chapters will chronicle this development

    Current events knowledge of 198 sixth grade children.

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    Thesis (Ed.M.)--Boston Universit

    The Merchant of Article 2

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