bluuebunny/crossref_metadata_2025_split huggingface dataset:
Quelles fonctions potentielles d’un dispositif d’aide pour soutenir la résolution d’une situation-problème mathématique chez des élèves en difficulté du primaire?
Authors: Theis Laurent , Assude Térésa , Tambone Jeanette , Morin Marie-Pier , Koudogbo Jeanne , Marchand Patricia 
Published: January 2015

La résolution de situations-problèmes mathématiques constitue un défi particulièrement grand pour les élèves en difficulté. Dans cet article, nous analysons un dispositif d’aide expérimenté par une enseignante du deuxième cycle du primaire. Ce dispositif consiste à mettre en place un système didactique auxiliaire (SDA), sous la forme d’une séance de travail avec les élèves qu’elle présume être en difficulté, deux jours avant la résolution d’une situation-problème en classe. À l’intérieur de ce SDA, l’enseignante explique la situation-problème et demande aux élèves d’anticiper ce qu’ils devront faire en classe deux jours plus tard. Nous avons dégagé quatre fonctions potentielles de ce dispositif : 1) une fonction chronogénétique, qui se manifesterait entre autres à travers le temps supplémentaire dont disposent les élèves en difficulté et la possibilité de connaître le problème avant qu’il ne soit traité en classe; 2) une fonction topogénétique, qui pourrait aider les élèves en difficulté à assumer leur position d’élève; 3) une fonction mésogénétique, qui permettrait aux élèves de rencontrer les paramètres de la situation-problème; et 4) une dialectique entre la suspension et l’anticipation de l’action. Nous présentons en quoi consistent ces fonctions potentielles et nous nous interrogeons sur les conditions de viabilité de ce système didactique auxiliaire.
Tâches complexes en mathématiques : difficultés des élèves et exploitations collectives en classe
Authors: Demonty Isabelle , Fagnant Annick 
Published: January 2015

Cet article s’intéresse aux tâches complexes proposées en Belgique francophone en guise d’exemples d’outils permettant d’évaluer les compétences en mathématiques des élèves en fin d’enseignement primaire (6e année). En confrontant les résultats de deux recherches portant sur une même tâche complexe (observation d’élèves lors de la résolution de la tâche en petits groupes, d’une part, et observation de situations d’enseignement menées en groupe-classe, d’autre part), le présent article tente d’apporter un éclairage aux questionnements suivants : 1) Quelles exploitations collectives les enseignants proposent-ils pour aider les élèves? 2) Prennent-ils en compte les erreurs et les difficultés des élèves? 3) S’appuient-ils sur leurs démarches efficaces? Globalement, si les résultats montrent que les enseignants s’appuient partiellement sur les difficultés des élèves et sur les démarches qui se sont avérées les plus efficaces lors l’observation des élèves en situation autonome de résolution, ils révèlent également un guidage directif de la part des enseignants et un implicite quant aux raisons guidant certains choix de démarches plutôt que d’autres risquantin finede ne pas suffisamment soutenir le développement des compétences visées.
La fonction de liaison en organisation communautaire
Authors: Lachapelle René 
Published: January 2015

Les organisateurs et organisatrices communautaires (OC) exercent une fonction de liaison qui s’est transformée au fil des diverses périodes de mise en oeuvre de l’approche communautaire et territoriale depuis les CLSC (Centres locaux de service communautaire) jusqu’aux Centres de santé et de services sociaux (CSSS). Avec la multiplication des approches intersectorielles et des métiers du développement dont les pratiques relèvent aussi de l’organisation communautaire, cette fonction s’est aussi diversifiée. Les fonctions, dont la liaison, constituent un angle mort de la littérature québécoise et nord-américaine sur l’organisation communautaire. La recherche a mis en évidence l’importance du contexte politique dans lequel est mise en oeuvre la fonction de liaison et permis de montrer qu’elle repose sur l’exercice de compétences pratiques : connaître le milieu, mobiliser les acteurs, garantir la cohésion du système local d’action, démocratiser les rapports au pouvoir et rendre accessibles les ressources.
Las marcas en el cuerpo de la víctima: la veracidad encarnada en la violencia de género
Authors: Casado Neira David 
Published: January 2015

Resumen: La certeza y la veracidad son dos requisitos imprescindibles para poder dar fe de su condición de víctima, el testimonio incierto despierta dudas y cuestiona la propia condición de víctima, de la misma manera que cuando la víctima se sale de los atributos que consideran la definen. Abordaremos este análisis de la violencia machista recurriendo a las campañas institucionales (entre 1998-2013 a nivel estatal), en las que se recurre a un corpus limitado y muy definido de marcas que estandarizan sobre el cardenal que deja el golpe doméstico. En la representación estética de la víctima el cuerpo ocupa un lugar privilegiado, más allá del testimonio de la palabra. La sangre y las marcas, con su inmediatez y capacidad de impactar (emocionar), responden a la lógica de la búsqueda de la certeza de veracidad. Una forma de dar testimonio no verbal que acaba siendo central en la emergencia de la víctima.Palabras clave: violencia de género, víctima, encarnación, campaña, maltratoAbstract: Reliability and veracity are two essential requirements the victims ought fulfil to attest their status as such. Uncertain testimonies raise doubts and put under question the status of victim, in the same way as when the victim breaks out with the attributes considered proper of her or him. This analysis address the representation of women in institutional campaigns agains gender violence between 1998-2013 in Spain. The corpus of abuse marks in women is narrow and recurrent, in it the bruises are regularly used to show the fact of violence performed by their male partner. In the aesthetic representation of the victim, her/his body occupies a privileged place, beyond the testimonial word. Blood and bruises, their brutal quality to shock people (to rise emotions), obeys the logic of non verbal witnesses: the victim’s testimony is reliable and veracious if embodied. The social representation of the women victim of gender violence is constructed upon a limited and body centred iconography, as if the women were mainly body and their experiences of abuse were mostly of physical origin.Keywords: gender violence, victim, embodiment, campaign, abuse
Desclasamientoy desencanto. La representación de las clases medias como eje de una relectura generacional de la transición española
Authors: Sánchez León Pablo 
Published: January 2015

Resumen: A partir de un ejemplo de cultura underground de mediados de los años setenta, este texto reflexiona sobre los límites de las narrativas convencionales y críticas sobre la instauración de la democracia en España debido a su sesgo politológico y plantea la existencia de un metarrelato sociológico subyacente común. Su fundamento es una representación de la clase media como estrato social que suaviza el conflicto social y garantiza la modernización económica y política. El artículo desvela una parte del proceso de cristalización, a partir de legados anteriores, de un discurso mesocrático en la cultura española durante la dictadura franquista, al que contribuyeron al unísono intelectuales favorables y contrarios al régimen, así como los primeros sociólogos académicos.Palabras Clave: Cultura underground, generación, transición.Abstract: After describing an example of radical culture from the mid-1970s, this text reflects on the limits of the conventional and critical narratives on the establishment of democracy in Spain and points to a sociological metanarrative underlying them all. Such metanarrative is founded in a representation of the middle class as a social layer capable of smoothening social conflict and securing economic and political modernization. The article reveals part of the process of cristallization of a mesocratic discourse in Spanish culture that, following previous legacies, took place during Franco´s dictatorship and which profitted from contributions by anti and pro-regime intellectuals, including the first generation of academic sociologists.Key Words: Underground Culture, Spanish Transition, Generation.
La víctima en el mundo hispánico. Su definición a través del paradigma Barroco
Authors: Martínez Josebe 
Published: January 2015

Resumen: Este artículo examina el feminicidio de Ciudad Juárez y la lucha de las familias de los desaparecidos durante la dictadura argentina (1973-1983). El análisis muestra como el paradigma de El Barroco/lo barroco sirve de archivo y repertorio para la conceptualización de la víctima en el mundo hispánico.Palabras Clave: Barroco, feminicidio, víctima, desaparecido, Argentina.Abstract: This article studies the femicide in Ciudad Juarez and the struggle of families of desaparecidos during the Argentina’ dictatorship (1973-1983). The analysis shows how the paradigm of the Baroque / baroque serves as archive and repertoire for the conceptualization of a “victim” in the Hispanic world.Key Words: Baroque, femicide, victim, dissapeared, Argentina.
Una mirada a la crisis del relato mítico de la Transición: la “Querella argentina” contra los crímenes del franquismo
Authors: Montoto Ugarte Marina 
Published: January 2015

Resumen: Este artículo es una primera aproximación al análisis de un espacio social, tradicionalmente no definido como producto cultural, pero que, como cualquier otro, revisita y reformula desde la perspectiva actual el relato mítico de la Transición. La querella argentina contra los crímenes del franquismo, y el espacio social que genera, es un producto cultural diferente, por sus propias dinámicas y su propio campo de juego, y hace que sea necesario seguir su proceso con una mirada atenta y diferente, prometiendo enriquecer un debate ya abierto en la literatura académica, como es el actual proceso de reelaboración colectiva sobre la historia del siglo XX en España.Palabras Clave: Transición española, Derechos Humanos, discursos sociales, Régimen del 78, sujetos sociales. Abstract: This article is a first approach to the analysis of a social space that traditionally have not been defined as a cultural product, but, as anyone else, revisits and reformulates from a current perspective the mythical story of the Transition. The Argentina complaint against the crimes of Francoism, and the social space that it generates, is a different cultural product by its own dynamics and its own field that makes necessary to analyze the process carefully and with a different look, promising enrich the already opened debate in the academic literature, as it is the current process of collective reelaboration of the history of the twentieth century in Spain. Key Words: Spanish transition, Human Rights, social discourses, 78th Regime, social subjets.
Detenerse En la pausa, abrir la escritura: experiencia y tiempos desarticulados en la novela de Diego Meret
Authors: Gordon Rocío 
Published: January 2015

Este trabajo examina las diferentes posibilidades que plantea la idea de la pausa en la primera novela de Diego Meret, En la pausa (2009). Ya sea como una etapa histórica, como una condición fisiológica o como la escritura misma, la pausa se presenta aquí como aquello que permite proponer una reflexión sobre la recuperación de la experiencia y la irrupción de tiempos desarticulados que quiebran las expectativas o las linealidades argumentales o históricas. Propongo, entonces, la pausa como una estrategia narrativa que expone el carácter letárgico de los años neoliberales del gobierno de Carlos Menem en Argentina y la imposibilidad de recobrar la experiencia durante ese período. Al mismo tiempo, la pausa se convierte en sí misma en narración, totalmente abierta a la incertidumbre. Palabras claves Diego Meret, experiencia, Menem/menemismo, tiempo desarticulado (out of joint), neoliberalismo This article considers the different possibilities represented by the idea of pause in Diego Meret’s first novel, En la pausa (2009). Whether as a historical period, a physiological condition, or as writing itself, pause is here presented as that opens a space for reflection on the recovery of experience and the emergence of disjointed temporalities that break with the expectation of chronological storytelling and historical linearity. I suggest that we understand pause as a narrative device that highlights the social and political lethargy that marked the neoliberal years of the Carlos Menem government in Argentina and the impossibility of recovering experience during that period. At the same time, pause itself becomes narration, completely open to uncertainty. Keywords Diego Meret, experience, Menem/menemismo, time out-of-joint, neoliberalism
Santiago Carrillo 1971. Políticas en transición y transferencia carismática
Authors: Sánchez Biosca Vicente 
Published: January 2015

Resumen: En junio de 1971, el PCE organizó un gran mitin político en las cercanías de París. En él se presentaban ante una masa de militantes, simpatizantes y antifranquistas dos líderes, Dolores Ibárruri (Pasionaria) y Santiago Carrillo, que habían desempeñado un importante papel en la historia de España y que se preparaban para hacerlo en el futuro postfranquista. El encuentro recibió una notable cobertura a través de la prensa y fue ampliamente fotografiado. Un film fue rodado y montado por la Comisión de Cine de Barcelona en colaboración con el colectivo francés Dynadia. El presente texto analiza las distintas dimensiones de este encuentro en relación con la táctica del partido, la lucha contra la Dictadura y, en especial, el proceso de transferencia del carisma entre Pasionaria (un mito viviente del Comunismo) y Carrillo, quien a la sazón ejercía el control orgánico del PCE, pero no era todavía reconocido como líder de masas.Palabras Clave: Transición española, Historia del PCE, Carisma líderes políticos, Cine político, Cine e Historia.Abstract:In June 1971, the Spanish Communist Party held a big rally in the outskirts of Paris. It aimed at introducing its leaders to a considerable mass of militants, sympathisers or simply anti-Francoist population living then in Europe. The two leaders who addressed this multitude were Dolores Ibárruri (known as Pasionaria) and Santiago Carrillo. Both had played a key role in the past, especially during the Spanish Civil War and both were planning to do so in the next future. The rally was profusely covered by press and photography; what’s more, a film was shot and edited by a Catalonian film crew along with the French revolutionary association Dynadia. This text analyses the different dimensions at stake in the rally, from the Party tactics perspective, as well as in relation to the Spanish Dictatorship. More specifically it takes into account what might be called transference of charisma from a living myth of Communism, Pasionaria, to the bureaucratic leader, Carrillo.Key Words: Spanish Transition to Democracy, History of the Spanish Communist Party, Charisma and Political Leaders, Political Cinema, Cinema and History.
Phytoplankton phenology in the coastal upwelling region off central‐southern Chile (35°S–38°S): Time‐space variability, coupling to environmental factors, and sources of uncertainty in the estimates
Authors: Corredor‐Acosta Andrea , Morales Carmen E. , Hormazabal Samuel , Andrade Isabel , Correa‐Ramirez Marco A. 
Published: January 2015

AbstractThe annual cycle and phenology of phytoplankton (satellite‐derived chlorophyll‐a, Chl‐a) in the coastal upwelling region off central‐southern Chile, their time‐space variation, the extent of their coupling with those of wind‐driven upwelling (as Zonal Ekman Transport, ZET), Sea Surface Temperature (SST), and Photosynthetically Active Radiation (PAR) were analyzed using a ∼10 year satellite time series (2002–2012). Wavelet analysis (WA) was applied to extract the dominant frequencies of variability and their recurrence, to derive the phenological indexes, and to assess the extent of the coupling between Chl‐a and environmental forcing in the annual frequency. Index estimates were obtained from minimum and maximum accumulated values in two different frequency bands, annual (WA‐ANF) and all except the synoptic (WA‐ALF). The annual frequency was dominant in all the variables; however, the annual cycle and phenology of Chl‐a displayed higher submeso and mesoscale variability. The mean onset date of Chl‐a was similar to those of PAR and ZET with WA‐ALF and cross WA indicated that, for the most part, their annual cycles were coupled or coherent. Few interannual changes in Chl‐a phenology were detected, including a ∼1 month longer duration (WA‐ALF) during La Niña 2010–2011. The mean anomalies in the magnitudes of Chl‐a and ZET during the upwelling season showed a slight but significant trend, negative for Chl‐a and positive for ZET, while SST remained relatively constant. This pattern was unexpected since three La Niña‐related conditions were identified during the 2007–2012 period.
Exotic crust formation on Mercury: Consequences of a shallow, FeO‐poor mantle
Authors: Vander Kaaden Kathleen E. , McCubbin Francis M. 
Published: January 2015

AbstractThe range in density and compressibility of Mercurian melt compositions was determined to better understand the products of a possible Mercurian magma ocean and subsequent volcanism. Our experiments indicate that the only mineral to remain buoyant with respect to melts of the Mercurian mantle is graphite; consequently, it is the only candidate mineral to have composed a primary floatation crust during a global magma ocean. This exotic result is further supported by Mercury's volatile‐rich nature and inexplicably darkened surface. Additionally, our experiments illustrate that partial melts of the Mercurian mantle that compose the secondary crust were buoyant over the entire mantle depth and could have come from as deep as the core‐mantle boundary. Furthermore, Mercury could have erupted higher percentages of its partial melts compared to other terrestrial planets because magmas would not have stalled during ascent due to gravitational forces. These findings stem from the FeO‐poor composition and shallow depth of Mercury's mantle, which has resulted in both low‐melt density and a very limited range in melt density responsible for Mercury's primary and secondary crusts. The enigmatically darkened, yet low‐FeO surface, which is observed today, can be explained by secondary volcanism and impact processes that have since mixed the primary and secondary crustal materials.
Solid Supported 9‐Amino‐9‐deoxy‐epi‐quinine as Efficient Organocatalyst for Stereoselective Reactions in Batch and Under Continuous Flow Conditions
Authors: Porta Riccardo , Benaglia Maurizio , Coccia Francesca , Cozzi Franco , Puglisi Alessandra 
Published: January 2015

AbstractPolystyrene‐supported 9‐amino‐9‐deoxy‐epi‐quinine was synthesized through co‐polymerization of an ad hoc‐designed chiral monomer with divinylbenzene, in the presence of azobis(isobutyronitile) (AIBN) as radical initiator and toluene and 1‐dodecanol as porogenic solvents. The heterogenized catalyst efficiently promoted the reaction of isobutyric aldehyde with β‐nitrostyrene, in very high yield and enantioselectivity, comparable or even higher than that of the homogeneous counterpart (up to 95% ee). The recyclability of the catalyst, its general applicability and its successful application to other reactions was also demonstrated. Finally, for the first time, a 9‐amino‐epi‐quinine derivative was employed to perform an enantioselective Michael reaction under continuous‐flow conditions; by using a home‐made, packed‐bed catalytic reactor, the aldehyde addition to nitrostyrene was successfully realized in flow mode, leading to the product in up to 93% ee.magnified image
Ruthenium(II)‐Catalyzed CH Arylation of Anilides with Boronic Acids, Borinic Acids and Potassium Trifluoroborates
Authors: Hubrich Jonathan , Himmler Thomas , Rodefeld Lars , Ackermann Lutz 
Published: January 2015

AbstractAn in situ generated cationic ruthenium(II) catalyst allowed for robust CH arylations of anilides with boronic acids. The optimized ruthenium catalyst was found to be both site selective and chemoselective, thereby providing the monoarylated products in excellent yields with ample substrate scope. The catalyst’s high efficacy furthermore set the stage for efficient CH arylations with borinic acids as well as potassium trifluoroborates.magnified image
Spin‐Labelling of Host‐Guest Assemblies with Nitroxide Radicals
Authors: Mezzina Elisabetta , Manoni Roberta , Romano Francesco , Lucarini Marco 
Published: January 2015

AbstractWithin the developing interface between free radicals and supramolecular chemistry, nitroxides play a special role because they are stable and easy to functionalize. This Focus Review summarizes recent progress in the design and synthesis of paramagnetic host‐guest complexes characterized by the presence of a nitroxide label covalently linked to the organic macrocycle. Examples include the synthesis of open‐shell, mechanically interlocked molecules (MIMs), such as rotaxanes, in which the dumbbell, the wheel, or both are tagged with nitroxide radicals, and how electron spin resonance (ESR) spectroscopy methods have been used for detecting and identifying the assemblies and for clarifying their structure and properties.
SiP Double Bonds: Experimental and Theoretical Study of an NHC‐Stabilized Phosphasilenylidene
Authors: Geiß Daniel , Arz Marius I. , Straßmann Martin , Schnakenburg Gregor , Filippou Alexander C. 
Published: January 2015

AbstractAn experimental and theoretical study of the first compound featuring a SiP bond to a two‐coordinate silicon atom is reported. The NHC‐stabilized phosphasilenylidene (IDipp)SiPMes* (IDipp=1,3‐bis(2,6‐diisopropylphenyl)imidazolin‐2‐ylidene, Mes*=2,4,6‐tBu3C6H2) was prepared by SiMe3Cl elimination from SiCl2(IDipp) and LiP(Mes*)SiMe3 and characterized by X‐ray crystallography, NMR spectroscopy, cyclic voltammetry, and UV/Vis spectroscopy. It has a planar trans‐bent geometry with a short SiP distance of 2.1188(7) Å and acute bonding angles at Si (96.90(6)°) and P (95.38(6)°). The bonding parameters indicate the presence of a SiP bond with a lone electron pair of high s‐character at Si and P, in agreement with natural bond orbital (NBO) analysis. Comparative cyclic voltammetric and UV/Vis spectroscopic experiments of this compound, the disilicon(0) compound (IDipp)SiSi(IDipp), and the diphosphene Mes*PPMes* reveal, in combination with quantum chemical calculations, the isolobal relationship of the three double‐bond systems.
An Enzyme Cascade Synthesis of ε‐Caprolactone and its Oligomers
Authors: Schmidt Sandy , Scherkus Christian , Muschiol Jan , Menyes Ulf , Winkler Till , Hummel Werner , Gröger Harald , Liese Andreas , Herz Hans‐Georg , Bornscheuer Uwe T. 
Published: January 2015

AbstractPoly‐ε‐caprolactone (PCL) is chemically produced on an industrial scale in spite of the need for hazardous peracetic acid as an oxidation reagent. Although Baeyer–Villiger monooxygenases (BVMO) in principle enable the enzymatic synthesis of ε‐caprolactone (ε‐CL) directly from cyclohexanone with molecular oxygen, current systems suffer from low productivity and are subject to substrate and product inhibition. The major limitations for such a biocatalytic route to produce this bulk chemical were overcome by combining an alcohol dehydrogenase with a BVMO to enable the efficient oxidation of cyclohexanol to ε‐CL. Key to success was a subsequent direct ring‐opening oligomerization of in situ formed ε‐CL in the aqueous phase by using lipase A from Candida antarctica, thus efficiently solving the product inhibition problem and leading to the formation of oligo‐ε‐CL at more than 20 g L−1 when starting from 200 mM cyclohexanol. This oligomer is easily chemically polymerized to PCL.