1,726,353 research outputs found
Faery stories : by Charles L. Marson.
No full textElectronic reproduction. Canberra, A.C.T. : National Library of Australia, 2009
A wavefront tracking algorithm for N×N nongenuinely nonlinear conservation laws
No full textAbstractWe introduce a wavefront tracking algorithm for N×N hyperbolic systems of conservation lawsut+F(u)x=0, that admits characteristic fields that are neither genuinely nonlinear nor linearly degenerate in the sense of Lax. Instead we assume that, for any nongenuinely nonlinear ith characteristic family, the derivative of the ith eigenvalue λi(u) of DF(u) in the direction of the ith right eigenvector ri(u), vanishes on a single (N−1)-dimensional hypersurface in the u-space, transversal to the field ri(u). Systems that fulfill this type of assumptions are of particular interest in studying elastodynamic or rigid heat conductors at low temperature. The first proof of the existence of weak solutions for nongenuinely nonlinear systems was given by T. P. Liu (Mem. Amer. Math. Soc.30 (1981), no. 240), based on a Glimm scheme. Our construction here provides an alternative method for establishing the global existence of weak solutions for such systems. Moreover, relying on the stability analysis developed in Ancona and Marson, preprint S.I.S.S.A.-I.S.A.S. 27/99/11, 1999, and preprint, 2000, we show that these solutions are entropy admissible in the sense of Lax
SBV-like Regularity of Entropy Solutions for a Scalar Balance Law
Full text linkWe demonstrate that solutions to scalar balance laws,in one space dimension, which exhibit bounded variation, must be functions of special bounded variation (SBV). This case study illustrates the strategy ap- plied in [Ancona-Caravenna-Marson, preprint, University of Padova, 2024] to systems of balance laws, extending the methodologies developed in pioneering previous works by several authors. While for a single balance law a more general work is already available, generalizing the first breakthrough related to a conserva- tion law, the case of 1D systems presents new behaviors that require a different strategy. This is why in this note we make the effort to introduce the notation and tools that are required for the case of more equations. When the flux presents linear degeneracies, it is known that entropy solutions can really present nasty fractal Cantor-like behaviours, although f′(u) is still SBV: We thus discuss SBV-like regularity, as SBV-regularity fails
Landscape in Spatial Planning: Some Evidence on Methodological Issues and Political Challenges
Full text linkIn recent decades, the landscape has given a new impulse to the renewal of spatial planning. This process has nevertheless raised several methodological issues about how to deal with sensitive non-functional aspects in spatial planning tools and procedures, as well as new challenges for policy design. Placemaking, landscape urbanism, and landscape planning do not differ just in scale but in their very idea of public/collective interest and the action that is required to reach them. Reflecting on some evidence from the recent Italian experience of landscape plans and policies, based on direct involvement in practice and academic debate, the author will highlight several main issues at stake today in this field. The conclusions will argue some potentially promising innovation perspectives, on both processes and contents regarding landscape-based spatial planning and policies, as well as some critical conditions of an institutional context
Marson et al. 2005 - PDF
No full textAccess to "Marson, S., Fox, M.G., and Mandrak, N. 2006. Evaluating the Extent of Fish Movement through Recreational Boating Locks. Trent University Honours Thesis." via PD
Marson et al. 2005 - PDF
No full textAccess to "Marson, S., Fox, M.G., and Mandrak, N. 2006. Evaluating the Extent of Fish Movement through Recreational Boating Locks. Trent University Honours Thesis." via PD
West Indies Calling: Una Marson in London
No full textUna Marson with Trinidadian Cricket-Star Learie Constantine, during a recording of “West Indies Calling”, 1943. © Imperial War Museum, Screenshot from IWM CCE 211 The biography of Una Marson is one of many “firsts”. Born in Jamaica in 1905, she lived between London and Kingston as a secretary, journalist, poet and radio broadcaster, with an especially remarkable period of her life as the first female Black broadcaster of the BBC during the Second World War. In the words of the Canadian lite..
In dialogo con Anna Marson
No full textIn questa intervista, si esplora l'evoluzione della pianificazione in Italia attraverso l'esperienza di Anna Marson. L'intervista riflette sul cambiamento della formazione accademica da approccio sperimentale a strutturato, riaffermando la pianificazione come strumento critico per le trasformazioni territoriali e sociali
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