bluuebunny/crossref_metadata_2025_split huggingface dataset:
Passages d’innocence : la différence photographique dans l’oeuvre de Jacques Derrida
Authors: Carotenuto Silvana , Rodriguez Tristan 
Published: July 2015

Cet article présente une lecture d’ensemble des différents textes que le philosophe a consacrés à l’art et à la technique de la photographie, de l’oraison funèbre dédiée à Roland Barthes (1981) à ses derniers textes brefs accompagnant Diaspora. Terres natales de l’exil de Frédéric Brenner (2003). Le texte aborde quelques-uns des motifs liés aux questions de la métonymie, du dé/montage comme dé/limitation de la représentation, de la vérité, des temporalités et espaces du développement, de la célébration et du rituel de l’art photographique. Derrida fait rarement usage de l’ekphrasis aux dépens des photographies qu’il lit ; il écrit plutôt la « graphie de la lumière », avec sa référentialité complexe, ses retours spectraux, à travers des effets et des affects déconstruits, à l’intérieur des demeures fragiles et vulnérables qu’elle illumine : telle est la différence de l’interprétation derridienne des images et de la vision.
De l’iconographie : Jean-Luc Nancy et la question de l’image
Authors: Ferrari Federico , Rodriguez Tristan 
Published: July 2015

Cet article s’intéresse au rapport entre l’écriture et l’image, mieux : à la possibilité même d’une iconographie. Jean-Luc Nancy a, à notre époque, montré cette possibilité à l’oeuvre. C’est donc à sa pensée sur l’image qu’est consacré ce texte. Chaque penseur est une occasion de penser : il n’y a rien à « reconstruire », aucune théorie à clarifier, à expliquer ou à illustrer, mais plutôt la nécessité de réactiver une pensée, de lui rendre toutes ses potentialités inexprimées, ou seulement exprimées selon une tonalité déterminée, selon les cordes d’une voix particulière. L’oeuvre de Jean-Luc Nancy, et encore davantage la partie de son corpus dédiée à l’image, n’échappe pas à cette règle. On relira donc ses oeuvres consacrées à l’image à la lumière de la pensée iconologique de Panofsky et de l’histoire de l’art afin d’esquisser la possibilité d’une iconographie considérée comme pensée figurative et ontologie de l’image : une pratique iconographique capable de s’exposer à la question même de la pensée, de demander compte de ce que signifie penser, penser par images et à travers les images.
« Par-dessus le marché » : Derrida et la performativité de l’ekphrasis
Authors: Rabaté Jean-Michel 
Published: July 2015

Partant de l’expression « par-dessus le marché », telle que Derrida l’utilise dans une conversation avec l’artiste coréenne Soun-Gui Kim au sujet des apories et paradoxes créés par notre marché mondial de l’art, j’examine la logique de cette expression idiomatique qui fonctionne comme un performatif ekphrastique, posant à la fois l’excès et son excès. Ceci se relie au silence qui accompagne le dévoilement de la vérité dans et par l’art. Soun-Gui Kim interprète ce silence en termes bouddhistes proches de son travail avec John Cage. J’évoque alors la dialectique du silence et de la musique chez Cage avant de rouvrir le débat entre Derrida et Paul de Man au sujet de la musique et de la voix chez Jean-Jacques Rousseau.
L’ekphrasis à contretemps
Authors: Michaud Ginette , Rodriguez Tristan 
Published: July 2015

À travers l’ekphrasis d’un tableau de Rembrandt, Autoportrait en Zeuxis, une rencontre énigmatique a lieu, à contretemps, ou à retardement, entre ce tableau et une photographie de Jacques Derrida prise par Raymond Depardon en juin 2004. La ressemblance troublante levée par l’autoportrait de Rembrandt, particulièrement dans la version révélée par les rayons X, interroge autant la portée du regard de Derrida (aura-t-il « survu » cette image au moment de la prise photographique ?) que l’effet de la survie inscrite dans le sourire indécidable dont le philosophe aura fait ses « derniers mots ». Énigme du palimpseste qui se joue ici entre le peintre et le philosophe, sans négliger l’intercession d’un tiers, passeur déterminant dans cette scène, Jean Genet.
The Impact of a Cooperative Learning Program on the Academ-ic Achievement in Mathematics and Language in Fourth Grade Students and its Relation to Cognitive Style
Authors: Vega Mery Luz , Hederich Christian M. 
Published: July 2015

Abstract
This study is expected to determine the impact of a program based on the cooperative learning methodology. This, in comparison to a traditional learning situation in both mathematics and language achievement. The study was carried out on a group of fourth grade students of primary school. In addition, it tried to find the differential impact according to the cognitive style in the field dependence-independence dimension. This work was carried out with 76 students of the Colegio José Martí I.E.D. (Bogotá-Colombia) ranging from 8–12 years of age. The control group received a traditional teaching methodology and the experimental group received the cooperative learning program, composed of 35 sessions (from July to November 2009). All the participants were tested in mathematics and language performance, before and after the intervention. All of them were tested in cognitive style as well. The results suggested that the cooperative learning methodology benefited importantly the academic achievement of the students in mathematics in contrast to the competitive and individualist situations. The results also suggested that the three cognitive style groups were positively affected from the cooperative learning situation. These results were not found in the language area.
Deep structure of the Santos Basin‐São Paulo Plateau System, SE Brazil
Authors: Evain M. , Afilhado A. , Rigoti C. , Loureiro A. , Alves D. , Klingelhoefer F. , Schnurle P. , Feld A. , Fuck R. , Soares J. , de Lima M. Vinicius , Corela C. , Matias L. , Benabdellouahed M. , Baltzer A. , Rabineau M. , Viana A. , Moulin M. , Aslanian D. 
Published: July 2015

AbstractThe structure and nature of the crust underlying the Santos Basin‐São Paulo Plateau System (SSPS), in the SE Brazilian margin, are discussed based on five wide‐angle seismic profiles acquired during the Santos Basin (SanBa) experiment in 2011. Velocity models allow us to precisely divide the SSPS in six domains from unthinned continental crust (Domain CC) to normal oceanic crust (Domain OC). A seventh domain (Domain D), a triangular shape region in the SE of the SSPS, is discussed by Klingelhoefer et al. (2014). Beneath the continental shelf, a ~100 km wide necking zone (Domain N) is imaged where the continental crust thins abruptly from ~40 km to less than 15 km. Toward the ocean, most of the SSPS (Domains A and C) shows velocity ranges, velocity gradients, and a Moho interface characteristic of the thinned continental crust. The central domain (Domain B) has, however, a very heterogeneous structure. While its southwestern part still exhibits extremely thinned (7 km) continental crust, its northeastern part depicts a 2–4 km thick upper layer (6.0–6.5 km/s) overlying an anomalous velocity layer (7.0–7.8 km/s) and no evidence of a Moho interface. This structure is interpreted as atypical oceanic crust, exhumed lower crust, or upper continental crust intruded by mafic material, overlying either altered mantle in the first two cases or intruded lower continental crust in the last case. The deep structure and v‐shaped segmentation of the SSPS confirm that an initial episode of rifting occurred there obliquely to the general opening direction of the South Atlantic Central Segment.
Nucleation process of an M2 earthquake in a deep gold mine in South Africa inferred from on‐fault foreshock activity
Authors: Yabe Yasuo , Nakatani Masao , Naoi Makoto , Philipp Joachim , Janssen Christoph , Watanabe Takayoshi , Katsura Taishi , Kawakata Hironori , Georg Dresen , Ogasawara Hiroshi 
Published: July 2015

AbstractUsing a network of sensitive high‐frequency acoustic emission sensors, we observed foreshock activity of an Mw 2.2 earthquake (main shock) in a deep gold mine in South Africa. Foreshock activity, which selectively occurred on a part of the rupture plane of the forthcoming main shock, lasted for at least 6 months until the main shock. Rock samples recovered from the main shock source region showed evidence of ancient hydrothermal alteration on the main shock rupture plane, suggesting that the foreshock activity occurred on a preexisting weakness. The foreshocks during 3 months before the main shock were concentrated in three clusters (F1–F3), which we interpret as representing localized preslip at multiple sites. While the location of mining area, the source of stress perturbations, changed with time, the locations of foreshock clusters did not change, suggesting that the preslip patches were controlled by strength heterogeneity rather than stress distribution. Activity over the entire foreshock area was generally constant, but the largest cluster (F2) showed accelerated activity starting at least 7 days before the main shock, while mining stress did not increase in this period. The main shock initiated at a point close to F1, away from F2. All the six foreshocks during the final 41 h occurred in F1 and F2 and in‐between. These suggest that in the last stage of the preparation process of the main shock, preslip patches interacted with each other through the stress concentration ahead of the expanding preslip patch (F2), which should be the only driving force of the preparation process under the constant external load.
A new seismically constrained subduction interface model for Central America
Authors: Kyriakopoulos C. , Newman A.V. , Thomas A. M. , Moore‐Driskell M. , Farmer G. T. 
Published: July 2015

AbstractWe provide a detailed, seismically defined three‐dimensional model for the subducting plate interface along the Middle America Trench between northern Nicaragua and southern Costa Rica. The model uses data from a weighted catalog of about 30,000 earthquake hypocenters compiled from nine catalogs to constrain the interface through a process we term the “maximum seismicity method.” The method determines the average position of the largest cluster of microseismicity beneath an a priori functional surface above the interface. This technique is applied to all seismicity above 40 km depth, the approximate intersection of the hanging wall Mohorovičić discontinuity, where seismicity likely lies along the plate interface. Below this depth, an envelope above 90% of seismicity approximates the slab surface. Because of station proximity to the interface, this model provides highest precision along the interface beneath the Nicoya Peninsula of Costa Rica, an area where marked geometric changes coincide with crustal transitions and topography observed seaward of the trench. The new interface is useful for a number of geophysical studies that aim to understand subduction zone earthquake behavior and geodynamic and tectonic development of convergent plate boundaries.
Impact of mesoscale meteorological processes on anomalous radar propagation conditions over the northern Adriatic area
Authors: Telišman Prtenjak Maja , Horvat Igor , Tomažić Igor , Kvakić Marko , Viher Mladen , Grisogono Branko 
Published: July 2015

AbstractThe impact of mesoscale structures on the occurrence of anomalous propagation (AP) conditions for radio waves, including ducts, superrefractive, and subrefractive conditions, was studied. The chosen meteorological situations are the bora wind and the sporadic sea/land breeze (SB/LB) during three selected cases over a large portion of the northern Adriatic. For this purpose, we used available radio soundings and numerical mesoscale model simulations (of real cases and their sensitivity tests) at a horizontal resolution of 1.5 km and 81 vertical levels. The model simulated the occurrences of AP conditions satisfactorily, although their intensities and frequency were underestimated at times. Certain difficulties appeared in reproducing the vertical profile of the modified refractive index, which is mainly dependent on the accuracy of the modeled humidity. The spatial distributions of summer AP conditions reveal that the surface layer above the sea (roughly between 30 and 100 m asl) is often covered by superrefractive conditions and ducts. The SB is highly associated with the formations of AP conditions: (i) in the first 100 m asl, where trapping and superrefractive conditions form because of the advection of cold and moist air, and (ii) inside the transition layer between the SB body and the elevated return flow in the form of subrefractive conditions. When deep convection occurs, all three types of AP conditions are caused by the downdraft beneath the cumulonimbus cloud base in its mature phase that creates smaller but marked pools of cold and dry air. The bora wind usually creates a pattern of AP conditions associated with the hydraulic jump and influences distribution of AP conditions over the sea surface.
Trends in the local Hadley and local Walker circulations
Authors: Schwendike Juliane , Berry Gareth J. , Reeder Michael J. , Jakob Christian , Govekar Pallavi , Wardle Richard 
Published: July 2015

Abstract The linear trend in the local Hadley and Walker circulations from 1979 to 2009 is calculated. These local circulations are defined through a decomposition of the vertical mass flux into its zonal and meridional components. Defining the local circulation this way ensures that the two orthogonal circulations (the local Hadley and Walker circulations) sum to the original circulation even after averaging the circulations regionally. Large regional differences in changes in the local Hadley and Walker circulations over a 31 year period are found. For example, the local Hadley circulation has shifted southward over Africa, the Maritime Continent, and the western and central Pacific by about 1°. Over the Americas and the Atlantic the local Hadley circulation has strengthened by about 1–5%. The zonal component of the vertical mass flux has increased by about 10–20% in the tropics over all continents and decreased over the adjacent oceans by about 10–20%. Although the local Walker circulations in the Indian Ocean and the Atlantic have weakened, the circulation in the Pacific has changed little (about 1–2%). The local Walker circulations in all ocean basins have shifted westward by about 1–2°on average.
A novel equation for determining the suction stress of unsaturated soils from the water retention curve based on wetted surface area in pores
Authors: Greco Roberto , Gargano Rudy 
Published: July 2015

AbstractA novel equation is proposed for the evaluation of the suction stress of an unsaturated soil. The equation, based on the assumption that suction is transmitted to soil solid particles only through their wet external surface, allows to easily derive the soil suction characteristic curve from the water retention curve. The proposed equation has been verified against published experimental data of suction stress smaller than 1 MPa for soils of various characteristics. In all cases, an excellent agreement between predicted and observed values of suction stress is achieved, showing that the proposed equation performs better than other currently adopted expressions for the evaluation of soil suction stress.
Surface water types and sediment distribution patterns at the confluence of mega rivers: The Solimões‐Amazon and Negro Rivers junction
Authors: Park Edward , Latrubesse Edgardo M. 
Published: July 2015

AbstractLarge river channel confluences are recognized as critical fluvial features because both intensive and extensive hydrophysical and geoecological processes take place at this interface. However, identifications of suspended sediment routing patterns through channel junctions and the roles of tributaries on downstream sediment transport in large rivers are still poorly explored. In this paper, we propose a remote sensing‐based approach to characterize the spatiotemporal patterns of the postconfluence suspended sediment transport by mapping the surface water distribution in the ultimate example of large river confluence on Earth where distinct water types meet: The Solimões‐Amazon (white water) and Negro (black water) rivers. The surface water types distribution was modeled for three different years: average hydrological condition (2007) and 2 years when extreme events occurred (drought‐2005 and flood‐2009). Amazonian surface water domination along the main channel is highest during the water discharge rising season. Surface water mixing along the main channel depends on the hydrological seasons with the highest mixed‐homogenized area observed during water discharge peak season and the lowest during discharge rising season. Water mixture also depends on the yearly hydrological regime with the highest rates of water mixing in 2009, followed by 2005 and 2007. We conclude that the dominant mixing patterns observed in this study have been persistent over a decadal scale and the anabranching patterns contribute to avoid a faster mixing in a shorter distance. Our proposed approach can be applied to a variety of morphodynamic and environmental analyses in confluences of large rivers around the world.
Short‐term variability in euphotic zone biogeochemistry and primary productivity at Station ALOHA: A case study of summer 2012
Authors: Wilson Samuel T. , Barone Benedetto , Ascani Francois , Bidigare Robert R. , Church Matthew J. , del Valle Daniela A. , Dyhrman Sonya T. , Ferrón Sara , Fitzsimmons Jessica N. , Juranek Laurie W. , Kolber Zbigniew S. , Letelier Ricardo M. , Martínez‐García Sandra , Nicholson David P. , Richards Kelvin J. , Rii Yoshimi M. , Rouco Mónica , Viviani Donn A. , White Angelicque E. , Zehr Jonathan P. , Karl David M. 
Published: July 2015

AbstractTime‐series observations are critical to understand the structure, function, and dynamics of marine ecosystems. The Hawaii Ocean Time‐series program has maintained near‐monthly sampling at Station ALOHA (22°45′N, 158°00′W) in the oligotrophic North Pacific Subtropical Gyre (NPSG) since 1988 and has identified ecosystem variability over seasonal to interannual timescales. To further extend the temporal resolution of these near‐monthly time‐series observations, an extensive field campaign was conducted during July–September 2012 at Station ALOHA with near‐daily sampling of upper water‐column biogeochemistry, phytoplankton abundance, and activity. The resulting data set provided biogeochemical measurements at high temporal resolution and documents two important events at Station ALOHA: (1) a prolonged period of low productivity when net community production in the mixed layer shifted to a net heterotrophic state and (2) detection of a distinct sea‐surface salinity minimum feature which was prominent in the upper water column (0–50 m) for a period of approximately 30 days. The shipboard observations during July–September 2012 were supplemented with in situ measurements provided by Seagliders, profiling floats, and remote satellite observations that together revealed the extent of the low productivity and the sea‐surface salinity minimum feature in the NPSG.
Crystallographic preferred orientations may develop in nanocrystalline materials on fault planes due to surface energy interactions
Authors: Toy Virginia G. , Mitchell Thomas M. , Druiventak Anthony , Wirth Richard 
Published: July 2015

AbstractA layer of substantially noncrystalline material, composed of partially annealed nanopowder with local melt, was experimentally generated by comminution during ∼1.5 mm total slip at ∼2.5 × 10−6 m s−1, Pconf ∼ 0.5 GPa, and 450°C or 600°C, on saw cut surfaces in novaculite. The partially annealed nanopowder comprises angular grains mostly 5–200 nm diameter in a variably dense packing arrangement. A sharp transition from wall rock to partially annealed nanopowder illustrates that the nanopowder effectively localizes shear, consistent with generation of nanoparticles during initial fragmentation, not by progressive grain size reduction. Dislocation densities in nanopowder grains or immediate wall rock are not significantly high, but there are planar plastic defects spaced at 5–200 nm parallel to the host quartz grain's basal plane. We propose these plastic defects developed into through‐going fractures to generate nanocrystals. The partially annealed nanopowder has a crystallographic preferred orientation (CPO) that we hypothesize developed due to surface energy interactions to maximize coincident site lattices (CSL) during annealing. This mechanism may also have generated CPOs recently described in micro/nanocrystalline calcite fault gouges.
Spatiotemporal variations of the slow slip event between 2008 and 2013 in the southcentral Alaska subduction zone
Authors: Fu Yuning , Liu Zhen , Freymueller Jeffrey T. 
Published: July 2015

AbstractWe apply a Kalman filter‐based time‐dependent slip inversion method to model a long‐term Slow Slip Event (SSE) in the southcentral Alaska subduction zone from 2008 to 2013. This event occurred downdip of the asperity that ruptured in the 1964 earthquake, the same part of plate interface that slipped during a previous SSE between 1998 and 2001. Most of the slip deficit that accumulated during the steady period between 2001 and 2008 (8 years total) in the SSE source region was released by this SSE. Our results indicate both lateral and downdip propagation during this event. The SSE started at the end of 2008 at the upper section of the slip patch, and gradually propagated to the east and to the deeper part of the interface. Our results indicate no connection between this SSE in Upper Cook Inlet and another SSE in Lower Cook Inlet that started in 2010. Analysis of the earthquake catalog in the southcentral Alaska subduction zone shows a clear increase in seismicity associated with the 2008–2013 SSE. With the data from a newly available continuous GPS site, we now can better constrain the start time of the 1998–2001 SSE as ∼1998.58.
Rainfall thresholds for the precipitation of carbonate and evaporite minerals in modern lakes in northern China
Authors: Gu Ning , Jiang Wenying , Wang Luo , Zhang Enlou , Yang Shiling , Xiong Shangfa 
Published: July 2015

AbstractAuthigenic carbonate and evaporite minerals in lake sediments are widely used to qualitatively reconstruct climate. However, uncertainties still remain about their quantitative relationship to climate. Here we investigate 86 modern lakes in northern China to examine the relationships between mineral formation, lake water chemistry, and climate. The results show that from east to west, with increasing salinity and ionic concentration, calcite, dolomite, and evaporite minerals (gypsum and halite) occur in sequence. Their eastern boundaries approximate modern isohyets, and we define for the first time rainfall thresholds of 600 mm, 400 mm, and 350 mm for the formation of calcite, dolomite, and evaporite minerals, respectively. Since the 400 mm and 600 mm isohyets also coincide with vegetation boundaries, our findings enable a new approach for the quantitative reconstruction of paleoprecipitation and paleovegetation based on mineral analysis.