13,581,494 research outputs found

    Introduction: Finding common ground beyond fragmentation

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    This chapter begins with an outline of the European context within which the twenty six research papers presented in this book emerged. A particularly important aspect of this context is Network 27 on Didactics, Learning and Teaching of the European Educational Research Association (EERA) which formed the core of the research community in which this work was developed over a five year period (2006-11). The next part of the chapter provides an overview of the six sections which make up the structure of the book as a whole. A discussion then follows of the clear continental divide with respect to didactics, learning and teaching in the European landscape which is based on the references used by the contributors to this book. This leads to a consideration of the historical origin of present-day didactics which can be traced back to a common heritage in the work of Jan Amos Comenius (1592-1670) in order to provide a platform in the search for common ground. In the section which then follows there is a discussion of the didactic triad as a tool for holding the complexity of teaching-studying-learning situations and this is considered in an expanded context in which classroom interaction in the school is placed within a wider societal context. Based on a review of the contributions to this book, the final parts of this chapter consider existing knowledge gaps between different national traditions and also identify themes that form the basis for building and extending common ground. The themes that have been identified through this process of synthesis relate to pedagogical content knowledge, learner knowledge, joint didactical action, curriculum research, the so called shift from teaching to learning, the philosophy of Bildung and its practical implications, links between theory and practice and the significant role of experimental schools. Finally these themes are proposed for consideration within the wider research, policy and practice community as the basis for future international co-operation that offer the potential to advance mutual understanding and common insights in this fiel

    Higher Twist Effects in Photon-Photon Collisions

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    In this article, we investigate the contribution of the high twist Feynman diagrams to the large pTp_{T} single pseudoscalar and vector mesons inclusive production cross section in two-photon collisions and we present the general formulae for the high and leading twist differential cross sections. The pion wave function where two non-trivial Gegenbauer coefficients a2a_2 and a4a_4 have been extracted from the CLEO data, Braun-Filyanov pion wave function, the asymptotic and the Chernyak-Zhitnitsky wave functions are used in the calculations. For ρ\rho-meson we used Ball-Braun wave function. The results of all the calculations reveal that the high twist cross sections, the ratio R, the dependence transverse momentum pTp_{T} and the rapidity yy of meson in ΦCLEO(x,Q2)\Phi_{CLEO}(x,Q^2) wave function case is very close to the Φasy(x)\Phi_{asy}(x) asymptotic wave function case. It is shown that the high twist contribution to the cross section depends on the choice of the meson wave functions.Comment: REVTEX4, 23 pages, 7 figure

    Introduction to the Anthropocene

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    https://nanocrit.com/issues/issue13/Editors-Introduction-for-NANO-Special-Issue-13-The-Anthropocenehttps://nanocrit.com/issues/issue13/Editors-Introduction-for-NANO-Special-Issue-13-The-AnthropoceneAccepted manuscrip

    Book Review: Hinde on Commercial Leases

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    This article reviews the book: “Hinde on Commercial Leases”, by G.W. Hinde

    Introduction: The effectiveness of impact assessment instruments

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    The global application of impact assessment instruments to achieve a variety of policy integration goals (e.g. the mainstreaming of environmental, gender or economic efficiency concerns) continues to proliferate. These instruments represent important components of contemporary political governance and hence are an important locus for applied research. This special issue of Impact Assessment and Project Appraisal critically examines 'state-of-the-art' knowledge and understanding of the effectiveness of impact assessment instruments. Six articles explore this subject from a variety of orientations (in terms of theoretical versus empirical emphasis, policy integration concerns, contributors' beliefs and framing etc.). Individually and cumulatively, these articles make a powerful contribution to learning about the 'thorny' issue of effectiveness and its implications for the theory and practice of impact assessment

    Exchange Return Co-movements and Volatility Spillovers Before and After the

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    This paper examines co-movements and volatility spillovers in the returns of the euro, the British pound, the Swiss franc and the Japanese yen vis-à-vis th
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