2,097 research outputs found
Authorship in the Interstices of History, Biography, Reality and Memory: Histoire(s) du cinéma and Cabra Marcado para Morrer
No full textEste artigo contrasta Histoire(s) du cinéma de Jean-Luc Godard e Cabra Marcado Para Morrer de Eduardo Coutinho, estão engajadas com a questão da autoria no cinema. Enquanto a imagem de Godard enfatiza a capacidade que tem um filme de transmitir a visão de mundo pessoal de um artista, a presença de Coutinho na tela funciona menos como um meio de subjetivar a obra do que como um catalizador instigando cetas reações nos "atores" filmados
Localization and delocalization of deformation in a bimineralic material
No full textWe investigate how localization and delocalization of deformation occurs in a bimineralic material composed of a strong plagioclase and a weaker quartz phase. We perform numerical, meter-scale shear experiments in which we vary the temperature and the ratio of the two mineral phases. Three micromechanical deformation fields are identified according to the mechanical behavior of the minerals at play (brittle or ductile when both phases are in the brittle or ductile regime, respectively, and semibrittle when one phase is in the brittle and the other in the ductile regime). Besides these micromechanical deformation fields, we identify three deformation types characterizing the degree of localization (type I: localized shear zone, type II: localized anastomosing shear zone, and type III: delocalized shear zone). Type I is expected in the brittle deformation field. In the semibrittle field, all deformation types can be observed depending on the amount of weak phase present. In the ductile field, deformation is dependent on the strength ratio between the two phases. For a low strength ratio, deformation of type III is always observed. For high-strength ratios, deformation of type II can be observed for a moderate amount of weak phase. A small amount of weak phase (This article is published as Jammes, Suzon, Luc L. Lavier, and Jacqueline E. Reber. "Localization and delocalization of deformation in a bimineralic material." Journal of Geophysical Research: Solid Earth 120, no. 5 (2015): 3649-3663. DOI:10.1002/2015JB011890. Posted with permission.</p
Stick-slip and creep behavior in lubricated granular material: Insights into the brittle-ductile transition
No full textCrustal deformation can occur via stick-slip events, viscous creep, or strain transients at variable rates. Here we explore such strain transients with physical experiments comprising a quasi-two-dimensional shear zone with elastic, acrylic discs and interstitial viscous silicone. Experiments of solely elastic discs produce stick-slip events and an overall (constant volume) strengthening. The addition of the viscous silicone enhances localization but does not greatly change the overall pattern of strengthening. It does, however, damp the stick-slip events, leading to transient, creep-like behavior that approaches the behavior of a Maxwell body. There is no gradual transition from frictional to viscous deformation with increasing amounts of silicone, suggesting that the mixed rheology is in effect as soon as an interstitial fluid is present. Our experiments support the hypothesis that a possible cause for strain transients in nature is an interstitial viscous phase in shear zones.This article is published as Reber, Jacqueline E., Nicholas W. Hayman, and Luc L. Lavier. "Stick‐slip and creep behavior in lubricated granular material: Insights into the brittle‐ductile transition." Geophysical Research Letters 41, no. 10 (2014): 3471-3477. DOI:10.1002/2014GL059832. Posted with permission.</p
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
De la laïcité à la française à la théorie normative de la religion (et retour).: Un entretien de Luc Foisneau avec Cécile Laborde
No full textThis interview with Cécile Laborde was conducted by Luc Foisneau in Aubervilliers on 13th April 2023. This interview has been published on the website Politika.io in French and English versions. In addition to Critical Republicanism (Oxford 2008) and a collective volume with John Maynor, Republicanism and Political Theory (Blackwell 2008), Cécile Laborde is the author of Liberalism's Religion (Harvard 2017). She's a Fellow of the British Academy and of the Royal Academy of Belgium.Cet entretien avec Cécile Laborde a été réalisé par Luc Foisneau à Aubervilliers le 13 avril 2023. Cet entretien a été publié sur le site Politika.io en versions française et anglaise. Outre Critical Republicanism (Oxford 2008) et un volume collectif avec John Maynor, Republicanism and Political Theory (Blackwell 2008), Cécile Laborde est l'auteur de Liberalism's Religion (Harvard 2017). Elle est membre de la British Academy et de l'Académie royale de Belgique
A Canonical Form for PROV Documents: Dataset Underpinning Evaluation
No full textDataset supporting:
Luc Moreau (2017) A Canonical Form for PROV Documents and its Application to Equality, Signature, and Validation. ACM Transactions on Internet Technology.
We present a canonical form for PROV that is a normalized way of representing PROV documents as mathematical expressions. As opposed to the normal form specified by the PROV-CONSTRAINTS recommendation, the canonical form we present is defined for all PROV documents, irrespective of their validity, and it can be serialized in a unique way. The paper makes the case for a canonical form for PROV and its potential uses, namely: comparison of PROV documents in different formats, validation, and signature of PROV documents. A signature of a PROV document allows the integrity and the author of provenance to be ascertained; since the signature is based on the canonical form, these checks are not tied to a particular encoding, but can be performed on any representation of PROV.</span
Modes of continental extension in a crustal wedge
No full text© 2015 Elsevier B.V. We ran numerical experiments of the extension of a crustal wedge as an approximation to extension in an orogenic belt or a continental margin. We study the effects of the strength of the lower crust and of a weak mid-crustal shear zone on the resulting extension styles. A weak mid-crustal shear zone effectively decouples upper crustal extension from lower crustal flow. Without the mid-crustal shear zone, the degree of coupling between the upper and the lower crust increases and extension of the whole crust tends to focus on the thickest part of the wedge. We identify three distinct modes of extension determined by the strength of the lower crust, which are characterized by 1) localized, asymmetric crustal exhumation in a single massif when the lower crust is weak, 2) the formation of rolling-hinge normal faults and the exhumation of lower crust in multiple core complexes with an intermediate strength lower crust, and 3) distributed domino faulting over the weak mid-crustal shear zone when the lower crust is strong. A frictionally stronger mid-crustal shear zone does not change the overall model behaviors but extension occurred over multiple rolling-hinges. The 3 modes of extension share characteristics similar to geological models proposed to explain the formation of metamorphic core complexes: 1) the crustal flow model for the weak lower crust, 2) the rolling-hinge and crustal flow models when the lower crust is intermediate and 3) the flexural uplift model when the lower crust is strong. Finally we show that the intensity of decoupling between the far field extension and lower crustal flow driven by the regional pressure gradient in the wedge control the overall style of extension in the models.We are grateful to Patrice Rey and Loic Labrousse for constructive comments that helped to improve the paper, and Editor Yanick Ricard for helpful assistance. This work was supported in part by the Academic Excellence Alliance program award to Luc L. Lavier from King Abdullah University of Science and Technology (KAUST) Global Collaborative Research under the title "3-D numerical modeling of the tectonic and thermal evolution of continental rifting". This is UTIG contribution 2842
Portrait of the Author in (Him/Her)self
No full textA fragment of a philosophical essay by Jean-Luc Nancy and Federico Ferrari titled Iconographie dell’auteur (Paris, 2005), published for the first time in Polish, that addresses the problem of a relationship between the image of the author and his/her work
Touching Freud's dog: H.D.'s tactile poetics
No full text"Do not touch me", Frau Emmy warns Freud in 1889. "Do not touch", Freud echoes in 1933. This time, he is referring to his pet chow, Yofi, warning H.D. that "she snaps - she is very difficult with strangers". Examining the prohibition in light of work by Jacques Derrida and Jean-Luc Nancy, this article charts the withdrawal that always interrupts touch. Despite Freud's taboo, however, H.D.'s writing seeks to make contact in strange and unnerving ways. Developing Julia Kristeva's account of the semiotic, this paper proposes a literature of touch. Reading H.D.'s poems, alongside Tribute to Freud, and her letters, the author demonstrates that H.D.'s poetics are always haunted by the very (im)possibility of contact
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Continental extension in orogenic belts : modes of extension, origin of core complexes, and two-phase postorogenic extension
No full textContinental extension principally occurs in orogenic belts, however, most of numerical simulations use uniform crust that cannot represent an orogenic belt. We simulate lithospheric extension in an orogenic hinterland approximated by a crustal wedge. We first show that the presence of a preexisting weak mid-crustal shear zone dipping at low angle exerts a critical control on whether crustal and mantle deformation are decoupled or coupled. When the lower crust and the mid-crustal shear zone are weak, decoupling occurs and crustal deformation is compensated by lower crustal flow. When the lower crust is strong or a weak shear zone is absent, coupling occurs and crustal deformation is compensated by flow in the mantle. By varying the strength of the lower crust and the weak shear zone in numerical lithospheric extension experiments, we examine structures developed and compare them with structures observed in extended and collapsed orogenic belts. In models with a weak mid-crustal shear zone, we find that decoupling is particularly effective. In these models, we distinguish three modes of extension: 1) localized, asymmetric crustal exhumation in a single metamorphic massif with a weak lower crust, 2) the formation of rolling-hinge normal faults and the exhumation of lower crust in multiple metamorphic core complexes with an intermediate strength lower crust, and 3) distributed domino faulting over the weak mid-crustal shear zone with a strong lower crust. In models without a mid-crustal shear zone, extension is coupled and structures similar to those observed in continental margins form. We further analyze my model to better explain and understand the core complexes and low-angle normal faults which develop when a preexisting weak mid-crustal shear zone is present. We define three types of detachment systems and present four models which produce core complexes that bear striking resemblance to natural examples: 1) bivergent core complexes, 2) metamorphic core complexes, 3) boudinage structures, and 4) flexural core complexes. We also discuss intracrustal isostasy and the thermal history of material particles sampled in modeled detachment. Finally, based on a geological and geophysical synthesis and using numerical simulations, we propose a two-phase postorogenic extensional scenario that approximates the evolution and the structures observed in the South China Sea margins.Earth and Planetary Science
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