Food Lion and the Media’s Liability for Newsgathering Torts: A Symposium Preview

Abans de l'arribada de Pere Alberch a la catedral de Barcelona, el magisteri de l'orgue havia estat en mans de l'organista Joan Ferrer, el qual l'exercí entre 1515 i 1536, essent mestre de cant entre 1513 i 1517. La identitat de l'organista de la catedral de Barcelona correspon a la del compositor «Johannes Ffarer», autor del motet «Domine non secundum» del Cancionero musical de Segovia (CMS). La identificació entre «Johannes Ffarer» i Joan Ferrer, i la presència del seu motet processional «Domine non secundum» juntament amb la de l'himne «Conditor alme siderunt» de Marturià Prats, fan palesa la recepció que la capella flamenca va fer del repertori polifònic d'aquests dos compositors catalans, les obres dels quals es devien incorporar al cançoner durant el prolongat sojorn que la capella de Carles I va fer a Barcelona, en el transcurs de l'any 1519. D'altra banda, i gràcies a la documentació capitular de les seus de Vic, Tortosa i Tarragona, sabem que Marturià Prats, i també Antoni Marlet, romanien vinculats a la capella nobiliària que l'infant Enric, comte d'Empúries, mantenia al seu palau del carrer Ample de Barcelona. En el marc del context urbà, social i musical de la Barcelona de principis del segle xvi no costa gaire d'imaginar com devien sovintejar els contactes, i, amb ells, les avinences i els intercanvis musicals en- tre els músics de la capella flamenca i els de les capelles nobiliàries dels Cardona, l'infant Enric, els Montcada, a banda dels cantors de la catedral i dels de les grans parròquies de la ciutat. Un esdeveniment d'aquestes característiques pot ajudar a explicar el motiu de la presència de les dues obres de Joan Ferrer i Marturià Prats en el CMS, convivint amb la riquesa del seu repertori francoflamenc i castellà.Before Pere Alberch arrived at Barcelona Cathedral, the organ master had been the organist Joan Ferrer in the period between 1515 and 1536, and he had also been the magister cantus between 1513 and 1517. The identity of the organist of Barcelona Cathedral corresponds to that of the composer Johannes Ffarer, who was the author of the motet Domine non secundum of the Cancionero musical de Segovia. The identification between Johannes Ffarer and Joan Ferrer, and the presence of his processional motet Domine non secundum together with that of the hymn Conditor alme siderunt of Marturià Prats, evidence the Flemish chapel's reception of the polyphonic repertoire of these two Catalan composers, whose works must have been added to the cancionero or song-book during the long stay of Charles I's chapel in Barcelona in the course of the year 1519. Moreover, thanks to the chapter documents of the cathedrals of Vic, Tortosa and Tarragona, we know that Marturià Prats as well as Antoni Marlet remained attached to the noble chapel which Prince Henry, Count of Empúries, kept in his palace at Carrer Ample in Barcelona. Within the urban, social and musical context of the Barcelona of the early 16th century, it is easy to imagine how frequent the contacts must have been and consequently the understandings and musical exchanges between the musicians of the Flemish chapel and those of the noble chapels of the Cardonas, Prince Henry, the Montcadas, etc., as well as the singers of the Cathedral and those of the major parish churches of the city. An event of this type could help to explain the reason for the presence of the two works of Joan Ferrer and Marturià Prats in the CMS, together with the rich Franco-Flemish and Castilian repertoire to be found there

Application of projection algorithms to differential equations: boundary value problems

The Douglas-Rachford method has been employed successfully to solve many kinds of non-convex feasibility problems. In particular, recent research has shown surprising stability for the method when it is applied to finding the intersections of hypersurfaces. Motivated by these discoveries, we reformulate a second order boundary valued problem (BVP) as a feasibility problem where the sets are hypersurfaces. We show that such a problem may always be reformulated as a feasibility problem on no more than three sets and is well-suited to parallelization. We explore the stability of the method by applying it to several examples of BVPs, including cases where the traditional Newton's method fails

Potential effects of environmental change on mining wastes in a hyperarid climate

Three desert washes were sampled to evaluate the transport of contaminated sediments from abandoned mining sites to downwash environments. The area of concern is an extreme arid climate considered stable and not to pose pathways for contaminated sediments to impact downwash environments. Research of mine wastes in Nelson, Nevada has shown that residual geogenic and anthropogenic trace elements have been mobilized in surface sediments as a result of storm event. Cyanide and trace elements, especially mercury and lead, have transported to 6000 m downwash from source areas. Short term environmental impacts appear to be minimal because of present-day environmental conditions. However, climate shifts caused by the El Nino Southern Oscillations or even a dramatic climate shift might increase regional precipitation promoting a more rapid erosion of contaminated sediment. Currently, wash sediments do not contain levels of CN- or trace elements that pose threats to the environment; however, if erosion and transport of mining waste increased because of additional precipitation, then CN- and trace elements loading in storm water would increase, with their possibly delivery to Lake Mohave

Propagation of Correlations in Quantum Lattice Systems

We provide a simple proof of the Lieb-Robinson bound and use it to prove the existence of the dynamics for interactions with polynomial decay. We then use our results to demonstrate that there is an upper bound on the rate at which correlations between observables with separated support can accumulate as a consequence of the dynamics.Comment: 10 page

On some fundamental results about higher-rank graphs and their C*-algebras

Results of Fowler and Sims show that every k-graph is completely determined by its k-coloured skeleton and collection of commuting squares. Here we give an explicit description of the k-graph associated to a given skeleton and collection of squares and show that two k-graphs are isomorphic if and only if there is an isomorphism of their skeletons which preserves commuting squares. We use this to prove directly that each k-graph {\Lambda} is isomorphic to the quotient of the path category of its skeleton by the equivalence relation determined by the commuting squares, and show that this extends to a homeomorphism of infinite-path spaces when the k-graph is row finite with no sources. We conclude with a short direct proof of the characterisation, originally due to Robertson and Sims, of simplicity of the C*-algebra of a row-finite k-graph with no sources.Comment: 21 pages, two pictures prepared using TiK

Forecasting and Conditional Projection Using Realistic Prior Distributions

This paper develops a forecasting procedure based on a Bayesian method for estimating vector autoregressions. The procedure is applied to ten macroeconomic variables and is shown to improve out-of-sample forecasts relative to univariate equations. Although cross-variables responses are damped by the prior, considerable interaction among the variables is shown to be captured by the estimates.We provide unconditional forecasts as of 1982:12 and 1983:3.We also describe how a model such as this can be used to make conditional projections and to analyze policy alternatives. As an example, we analyze a Congressional Budget Office forecast made in 1982:12.While no automatic causal interpretations arise from models like ours, they provide a detailed characterization of the dynamic statistical interdependence of a set of economic variables, which may help inevaluating causal hypotheses, without containing any such hypotheses themselves.