59,742 research outputs found

    Demons and Abelian Projection QCD: Action and Crossover

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    I evaluate S_{APQCD}, the exact action of Abelian projection QCD, using the microcanonical demon method. Starting with a trial action consisting of L=1, L=2, & L=3 LxL plaquettes plus a Smit-van-der-Sijs magnetic monopole ``mass'' operator, I show that coefficients of the L=2 and L=3 plaquettes vanish at all beta_{SU2}. In fact, at strong coupling S_{APQCD} is essentially the 1x1 compact QED action with beta_{U1}=beta_{SU2}/2. Beyond beta_{SU2}>=2, S_{APQCD} gains an exogenous negative 1x1x1 magnetic monopole mass shift. Note that my approach differs fundamentally from the Smit-van-der-Sijs approach in that I do not make an a priori assumption about monopole or plaquette size in S_{APQCD}. Indeed, these results suggest that QCD monopoles are pointlike, in contrast to the ``effective'' condensation picture put forth by Smit and van der Sijs.Comment: to appear in Physics Letters B347 (1995) 367-37

    Design education in the age of media convergence

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    Dynamic literature mapping : typography in screen-based media

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    This paper chronicles the development of a visual map representing a literature search on key theorists and thinkers in two principal topics: Typography and New Media. Its aim is to visualise and facilitate conceptual connections between key ideas and philosophies across disciplines. This literature map was drawn up by reviewing available influential literature within these topics. Related categories were later added and a further series of literature searches were conducted to build references in each topic. This on-going cyclical process serves to construct a comprehensive contextual map of knowledge. The benefit of the map is twofold. Primarily, aiding the researcher to navigate and understand complex layers of information. Secondly, allowing the researcher to present and share representations of knowledge. The clarity of the representation is crucial in eliciting the participation of fellow design researchers and practitioners to the development and growth of the literature map

    Deuteron photodisintegration with polarized photons at astrophysical energies

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    Following precise experimental studies at the Duke Free-Electron Laser Laboratory, we discuss photodisintegration of deuterons with 100% linearly polarized photons using a model independent theoretical approach taking together M1M1 and E1E1 amplitudes simultaneously. The isoscalar M1sM1_s contribution is also taken exactly into account. From the existing experimental measurement on doubly polarized thermal neutron capture, it is seen that the isoscalar M1sM1_s contribution could be of the same order of magnitude as the experimentally measured cross sections at energies relevant to Big Bang Nucleosynthesis (BBN). Therefore appropriate measurements on deuteron photodisintegration are suggested to empirically determine the M1sM1_s contribution at astrophysical energies.Comment: 5 Pages, Latex-2

    Connecting practice to research (and back to practice): making the leap from design practice to design research

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    This paper explores two questions: what skills and knowledge can be derived from research and brought back into design practice; and how can we better prepare designers to undertake research? Its aim was to enable design practitioners wishing to pursue research to understand the process and anticipate the scope and level of work. Additionally, it addressed the questions of how design education can incorporate a research-based curriculum and how professional bodies can promote the value of research to practitioners? A complementary paper was co-written and presented at the CONNECTED 07 conference, Sydney. It explores the process of undertaking a PhD within the framework of the UK design education system by examining it from a design and business perspective (Yee, J.S.R, Michlewski, K. and Bohemia, E. (2007) 'Interrogating the Academic Research Process in UK Design Education from Design and Business Perspectives', ConnectED 2007 – International Conference on Design Education, Sydney, (http://www.designdictator.com/publications/connected07.pdf). Yee’s research bridges the gap between contemporary design practice, the growth of professional knowledge and pedagogy, via empirical study and theoretical discourse. Yee is currently 2nd supervisor for a PhD, entitled; ‘The Development of a Framework to Understand Potential Relationships Between Services and Their Users’ and is contributing to the development of the Professional Practice Doctorate in Design in the CfDR
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