808 resultados para Strange Attractor


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The aim of this paper is to propose a mathematical model to determine invariant sets, set covering, orbits and, in particular, attractors in the set of tourism variables. Analysis was carried out based on a pre-designed algorithm and applying our interpretation of chaos theory developed in the context of General Systems Theory. This article sets out the causal relationships associated with tourist flows in order to enable the formulation of appropriate strategies. Our results can be applied to numerous cases. For example, in the analysis of tourist flows, these findings can be used to determine whether the behaviour of certain groups affects that of other groups and to analyse tourist behaviour in terms of the most relevant variables. Unlike statistical analyses that merely provide information on current data, our method uses orbit analysis to forecast, if attractors are found, the behaviour of tourist variables in the immediate future.

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Resulte incuestionable que, en la actualidad, el Turismo constituye un complejo fenómeno con perfiles complejos y heterogéneos dentro del cual son abordados ámbitos muy diversos (económico, jurídico, político, cultural…). De forma inicial, dentro de la pluralidad de las relaciones que circunscriben el mismo, presentan especial transcendencia las conectadas, en mayor o menor grado, con la gestión y el alojamiento turístico. Lo que hace medio siglo resultaba inimaginable o, casi extravagante, constituye hoy una circunstancia común y frecuente en el escenario propuesto, de forma particular, dentro del complejo y escasamente analizado ámbito de la gestión hotelera. Al hilo de lo expresado, en este trabajo se analizará, partiendo del supuesto de que la colaboración interempresarial en el sector turístico puede sustentarse en capital o en relaciones contractuales, sus esenciales trazos conformadores (gestor hotelero y titular del hotel gestionado) sobre los cuales poder elaborar un concepto ordenado y de subsunción del mismo como paso previo para la fijación de su régimen jurídico básico. Con idéntico tenor, se discutirá la posibilidad de integración del hotel determinado en las grandes cadenas hoteleras, la utilización de su know-how estandarizado y marca propia. Finalmente, será estudiada su incidencia en las grandes cadenas hoteleras al objeto de valorar su expansión tanto desde un punto de vista nacional como internacional.

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Handwritten letter sent by Joseph Moody, schoolmaster in York, to Harvard Tutor Nathan Prince recommending student Amos Main for acceptance to the College. In the letter, Moody requests Prince give Main an examination for admission, with the caveat that though Main has been studying Latin and Greek he has a difficult home life and is "somewhat Raw; yet I hope you'l wink at it." The letter, dated July 2, 1725, is written on a folded folio-sized leaf; there are handwritten notes about Massachusetts towns on the verso.

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Faced with a diagnosis of multiple sclerosis, I began with the objective of discovering methods for creating art that were still accessible to me. Along the way, I encountered others who had travelled this road before me. Their experiences led me to examine, not only my art, but also my political orientations, my love obligations and my transitioning self. In my varied art pieces, I conjure something from diverse sources and different worldviews, including contemporary feminist performance art and disability cultural theory. My thesis is a project. I make things: puppets, videos and performances, which included the exhibition, Need to be Adored (2014), staged in the digital media lab of the Isabel Bader Centre for the Performing Arts in Kingston, Ontario, Canada. The exhibition introduced thirteen of my puppets and a thirty-two-minute looped video. Following the exhibition, I put the puppets away and spent two years reading. Finally, taking my inspiration from Carolyn Ellis’s The Autoethnographic I (Ellis 2004), I turned my processes into words. I wrote out my experiences. I created an alternative text of my identity from an able-bodied cis-identified woman into a disabled trans-feminist artist academic. The writing required an uncomfortably intimate examination of my life. Nothing less than complete honesty would allow me to understand my new location. The resulting text is a lyrical and sometimes whimsical flow of consciousness that invites the reader to imagine what it might be like to engage in such a candid review of everything one holds close to one’s heart. Contained within are all my identities. In this text I let some out. This is a story of unsettling. I am working on my art practices, creating a cast of characters from cloth. Puppets. El becomes the exulted main character of a fictional accounting. She uncovers her queer roots and begins to see that she is at the centre of a very strange geography. Her desire to make film is revealed as she re-remembers her childhood through a disability lens.

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The present understanding of the initiation of boudinage and folding structures is based on viscosity contrasts and stress exponents, considering an intrinsically unstable state of the layer. The criterion of localization is believed to be prescribed by geometry-material interactions, which are often encountered in natural structures. An alternative localization phenomenon has been established for ductile materials, in which instability emerges for critical material parameters and loading rates from homogeneous conditions. In this thesis, conditions are sought under which this type of instability prevails and whether localization in geological materials necessarily requires a trigger by geometric imperfections. The relevance of critical deformation conditions, material parameters and the spatial configuration of instabilities are discussed in a geological context. In order to analyze boudinage geometries, a numerical eigenmode analysis is introduced. This method allows determining natural frequencies and wavelengths of a structure and inducing perturbations on these frequencies. In the subsequent coupled thermo-mechanical simulations, using a grain size evolution and end-member flow laws, localization emerges when material softening through grain size sensitive viscous creep sets in. Pinch-and-swell structures evolve along slip lines through a positive feedback between the matrix response and material bifurcations inside the layer, independent from the mesh-discretization length scale. Since boudinage and folding are considered to express the same general instability, both structures should arise independently of the sign of the loading conditions and for identical material parameters. To this end, the link between material to energy instabilities is approached by means of bifurcation analyses of the field equations and finite element simulations of the coupled system of equations. Boudinage and folding structures develop at the same critical energy threshold, where dissipative work by temperature-sensitive creep overcomes the diffusive capacity of the layer. This finding provides basis for a unified theory for strain localization in layered ductile materials. The numerical simulations are compared to natural pinch-and-swell microstructures, tracing the adaption of grain sizes, textures and creep mechanisms in calcite veins. The switch from dislocation to diffusion creep relates to strain-rate weakening, which is induced by dissipated heat from grain size reduction, and marks the onset of continuous necking. The time-dependent sequence uncovers multiple steady states at different time intervals. Microstructurally and mechanically stable conditions are finally expressed in the pinch-and-swell end members. The major outcome of this study is that boudinage and folding can be described as the same coupled energy-mechanical bifurcation, or as one critical energy attractor. This finding allows the derivation of critical deformation conditions and fundamental material parameters directly from localized structures in the field.

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"This catalogue has been compiled by Mr. E.F. Strange".

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Mode of access: Internet.

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"Address before the National Association of Cotton Manufacturers at Copley-Plaza Hotel, Boston, Massachusetts, April 22nd, 1921."

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WorldStarHipHop.com (WSHH) is an online video aggregating website that describes itself as “the premiere online hip hop destination” and a home for “urban media.” Yet, browsing through the site provides little clarity on what constitutes a hip-hop video or urban Internet space because of the disparate video content, the actual racial diversity of the performers, and the website’s generic design. As a result, WSHH’s taglines make a strange claim about the current state of the black musical tradition. Through close readings of the site, this article considers the architecture of this space of interracial exchange and identifies the interface as an example of Modernist architectural simplicity. I argue WSHH’s modular design is flexible enough to include non-black bodies, while remaining a black “urban” space. Thus, the site’s straightforward architecture paradoxically becomes the scaffolding of a much more complex, de-corporealized, and “shareable” blackness.

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Mode of access: Internet.

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Mode of access: Internet.

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This work is considered a forgery by Dr. Montague R. James in his Apocryphal New Testament, Oxford, 1924, p. 90.

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Mode of access: Internet.