bluuebunny/crossref_metadata_2025 huggingface dataset:
Acerca del 'fenómeno' Lucía Etxebarria
Authors: Henseler Christine
Published: December 2012

Lucía Etxebarria participa en las discusiones de producción y consumo de su empresa novelística y estimula el debate al usar el género como tipología. El poder de atracción de Etxebarria se encuentra en su habilidad para ubicarse entre portada y texto, imagen y palabra, allí donde la creación de la literatura encuentra la diseminación del libro como objeto material. La pregunta que persigue este trabajo sobre Etxebarria —¿A qué viene tanto jaleo?— ofrece una mirada comprensiva de cómo la autora juega con la construcción comercial de género durante la parte de su carrera que más claramente ha confrontado las tensiones consumistas en el campo cultural y ha moldeado una posición para ella en la escena literaria contemporánea de los noventa; escena que va desde 1997 al 2003.
Crítica y sátira social en la poesía de Luis Felipe Vivanco: Prosas Propicias (1976)
Authors: Romarís Pais Andrés
Published: December 2012

La mayor parte de la obra poética de Luis Felipe Vivanco se caracteriza por su reflexión intimista sobre una realidad hondamente personal centrada en lo cotidiano, lo familiar, lo religioso y la naturaleza, con una estética y estilo que el propio poeta denominó «realismo intimista trascendental». Sin embargo, en Prosas propicias, su última obra publicada póstumamente, reflexiona también sobre la realidad social y política de los últimos años de la dictadura franquista, lo que sin duda es algo novedoso en su poesía. El estudio de este nuevo ámbito temático es precisamente el objetivo de este artículo.
Acerca de los tonos en literatura
Authors: Spang Kurt
Published: December 2012

En este artículo se intenta formular una definición de los tonos en las artes y en la literatura. La definición se basa en los afectos como desencadenantes. Se distingue entre tonos naturales y ficcionales; en ambos casos la transmisión se realiza en tres fases: los tonos se desencadenan a través de los afectos, luego se plasman sensorialmente en tonos y, finalmente, se vuelve a transformar en afectos en la recepción. Al final se ofrece un esbozo de los tonos en las diversas artes haciendo especial hincapié en la literatura.
Conversaciones, diálogos y triálogos durante la Guerra de la Independencia Española
Authors: Romero Peña María Mercedes
Published: December 2012

Analizamos en estas páginas los diálogos patrióticos y políticos que se compusieron durante los años de la invasión napoleónica en España. Unos tuvieron como fin primordial impulsar a los españoles a la lucha, y otros fueron reflejo de las rivalidades políticas del momento. Ofrecemos sus características principales y comentamos una selección de los diálogos más famosos y que más difusión tuvieron en su época.
Espacios dramáticos en Rojas Zorrilla
Authors: Suárez Miramón Ana
Published: December 2012

El espacio resulta fundamental en el teatro y Rojas utiliza con gran habilidad tanto los espacios abiertos como los cerrados. Incluso alterna unos y otros y los acompaña del contraste entre luz y oscuridad para intensificar la tensión dramática. Un examen detenido de la función del espacio en Lo que quería ver el marqués de Villena y Casarse por vengarse, muestra la importancia del espacio para la acción, para transmitir estados emocionales, situaciones dramáticas e incluso representar la teatralidad.
Memoria de actores: Entre bobos anda el juego en la escena del teatro Español de Madrid (1895-1896)
Authors: Menéndez Onrubia Carmen
Published: December 2012

La gran labor dramática desarrollada por María Guerrero en su larga vida escénica como actriz y empresaria, arrancó en la temporada teatral 1894-95 con dos grandes logros. De una parte, los autores contemporáneos más comprometidos se aglutinaron en torno a ella, iniciándose así la tan necesaria renovación teatral. De otra, el teatro clásico español vivió en los años finales del siglo XIX, gracias a la Guerrero, uno de sus momentos más esplendorosos. A él dedicó la actriz un día a la semana, los «lunes clásicos», y con él se paseó por Europa y América del Sur. Al estudio de la puesta en escena de Entre bobos anda el juego, obra con la que inauguró la primera temporada completa en el teatro Español de Madrid (1895-1896), va dedicado este trabajo, en el que se destaca la cuidada labor escenográfica y artística de la joven empresaria y actriz, así como la que desarrolló Donato Jiménez, uno de los mejores intérpretes de Don Lucas del Cigarral.
De la fortuna escénica de Rojas Zorrilla en los teatros de Madrid
Authors: García Lorenzo Luciano
Published: December 2012

Siguiendo la labor de René Andioc y Mireille Coulon para el siglo XVIII y de otros estudiosos en épocas posteriores, entre los cuales el propio autor del artículo, se ofrecen en este trabajo los datos correspondientes a los estrenos de Francisco de Rojas Zorrilla en los teatros madrileños, desde principios del siglo XVIII hasta nuestros días. De la actividad de cada siglo se extraen una serie de conclusiones para un mejor conocimiento de la recepción del autor toledano y el puesto que le corresponde en la suerte en los escenarios de nuestros clásicos.
El vejamen de Rojas para la Academia de 1638. Estudio y edición
Authors: Julio María Teresa
Published: December 2012

Durante el mes de febrero de 1638 se celebraron en el palacio del Buen Retiro las fiestas de carnestolendas. Entre las actividades programadas, se realizó una academia literaria en la que participaron poetas y cortesanos. De ella se conservan tres vejámenes: el de Alfonso de Batres, el de Antonio Coello y el de Francisco de Rojas Zorrilla.
En el presente artículo se analiza y edita críticamente el vejamen que Rojas defendió ante sus majestades en el Salón Real del Retiro el 11 de febrero de 1638.
Los juegos narrativos de Max Aub en Juego de cartas
Authors: Valles Calatrava José R.
Published: December 2012

Tras examinar las fechas de escritura y publicación, las ilustraciones de los naipes y las vinculaciones temáticas de las 106 epístolas que integran la obra de Max Aub Juego de cartas (1964), este artículo estudia las dimensiones lúdica y experimental de la novela y su estructura abierta, analizando sucesivamente de modo detallado los procedimientos técnicos narrativos empleados por Aub en su composición: disociación autoral y presencia del apócrifo, retextualización ilimitada de la historia narrativa (texto diseminado y montaje abierto), máxima interactividad, diseño caleidoscópico.
El lugar de la sátira en la poética: los tratados españoles del siglo XIX
Authors: González Alcázar Felipe
Published: December 2012

Se propone en este artículo investigar el género satírico y sus relaciones con la Poética a través de los tratados poético-retóricos de preceptiva españoles del siglo XIX. A lo largo de toda esa centuria la teoría literaria estuvo sujeta a grandes transformaciones, entre ellas, el triunfo de los principios hegelianos acerca de los géneros literarios. La sátira se enfrenta a esas mismas transformaciones y a su propia evolución: primero, identificada con la satura romana, y luego, a través de sus numerosas formas, convertida en un género mixto o de transición. Su lábil naturaleza parece enfrentarse directamente con la perennidad normativa de los tratados que, a pesar de la ruptura romántica, pueden considerarse herederos de los principios clasicistas.
Garcilaso de la Vega y Pedro Salinas: la voz a ti debida
Authors: Escarpín Gual Montserrat
Published: December 2012

El artículo muestra la relación entre dos escritores españoles: Garcilaso de la Vega y Pedro Salinas; o mejor, la influencia del primero sobre el segundo. Esta puede observarse en diferentes niveles: el uso de géneros literarios (églogas, elegías o cancioneros), la concepción del amor, el uso de mitos y tópicos, la música del verso, etc. Algunas características del estilo de Salinas proceden claramente de Garcilaso (el intimismo, la sencillez, la oralidad, el empleo del diálogo, el presente verbal, la primera persona, etc.). Nuestro ensayo estudia la incidencia de Garcilaso en el libro Largo lamento, 1937?, que Salinas escribió en paralelo a un ensayo sobre el poeta renacentista —además de otros trabajos inéditos y su correspondencia personal—, para mostrar la presencia de Garcilaso en su pensamiento y en su producción.
/Literatura/ Investigaciones sobre el campo entre poesía
Authors: Garrido Gallardo Miguel Ángel
Published: December 2012

Este trabajo se propone establecer los límites definitorios del término literatura en su sentido estético con las precisiones que se derivan de la historia cultural de sus dos siglos de vida y de la limitación que le impone la irrupción de la cultura cibernética. Propondrá además algunas consecuencias institucionales que implica la noción de literatura a tenor del desarrollo mencionado. Se trata de una investigación que conecta estudios filológicos y estudios culturales, respetando sus respectivos estatutos epistemológicos.
“Idea del siglo XVIII”: sobre la Ilustración en el Memorial Literario (1801)
Authors: Checa Beltrán José
Published: December 2012

Publicado en el Memorial Literario de 1801, la Idea del siglo XVIII es un texto que ha pasado prácticamente desapercibido para la generalidad de los dieciochistas, a pesar de su enorme interés. Constituye una de las primerísimas miradas que el recién inaugurado siglo XIX dirige sobre la centuria anterior, el «siglo ilustrado», como lo denomina el propio autor (presumiblemente Pedro María Olive). El objetivo de este trabajo es dar a conocer este importante y temprano texto español sobre la Ilustración y estudiarlo como espejo y lámpara de los debates y controversias del panorama político, literario y cultural de la España de 1801.
Aproximaciones al apócrifo en la órbita de Max Aub: del modelo francés a las últimas manifestaciones peninsulares
Authors: Rosell María
Published: December 2012

En este trabajo se realiza una lectura del mapa de manifestaciones apócrifas alrededor de la figura de Max Aub, escritor que construye un universo de superchería literaria desde sus obras iniciales, abarcando y fusionando diferentes géneros. A partir del contraste con algunos de los textos franceses que leyó, y que supusieron una herencia cultural de gran valor, se esbozará un panorama que incluya tanto a los maestros y predecesores en la práctica apócrifa aubiana, André Gide y Valéry Larbaud fundamentalmente, como a sus sucesores más representativos: los narradores leoneses creadores de Sabino Ordás. Entre unos y otros, se rastrearán los casos peninsulares de mayor trascendencia, con el fin de llamar la atención, por una parte, sobre la relevancia de este corpus y su función con respecto al canon. Por otra parte, se analizará su voluntad de subversión de los mecanismos convencionales del arte y de la autobiografía.
La violencia en los libros de pastores
Authors: Castillo Martínez Cristina
Published: December 2012

Se suele entender que los libros de pastores se caracterizan en su totalidad por describir espacios idílicos presididos por la armonía y la paz. Pero esto no siempre es así. La lectura de los títulos que han llegado hasta nosotros nos muestran, en algunas casos, episodios en los que aparecen distintas manifestaciones de violencia, ya sea ejecutada sobre uno mismo, en forma de suicidio; ejecutada sobre los demás, en forma de asesinato; o expresada simplemente en la descripción de personajes descomunales o de animales salvajes. Al análisis de estos episodios dedico las siguientes páginas.
La propiedad literaria de las obras de Gustavo Adolfo Bécquer
Authors: Ménguez Rodríguez Felipe
Published: December 2012

Mencionamos aquí un contrato editorial entre el editor madrileño Fernando Fe y la viuda de Bécquer, Casta Esteban y Navarro, que corrige las afirmaciones realizadas por Julia Bécquer sobre la propiedad literaria de las obras de su tío. El artículo muestra también la evolución posterior de esta propiedad.
Los autores como actores en el teatro experimental español de los años veinte
Authors: Fraga Fernández-Cuevas María Jesús
Published: December 2012

En los ensayos de renovación teatral de los años veinte, varios dramaturgos intervinieron como actores. Los hermanos Baroja actuaron en la compañía ‘El Mirlo Blanco’: la participación de D. Pío fue entusiasta pero breve; de su hermano Ricardo se recuerda con mayor interés su labor de escenógrafo. Las numerosas actuaciones de Rivas Cherif fueron unánimemente valoradas por su coherencia con los presupuestos del nuevo teatro que tanto defendió. Eusebio de Gorbea fue el dramaturgo más reconocido en su labor de actor, si bien sus rasgos más destacados, tono, ademán, rudeza le sitúan cercano al naturalismo. La labor interpretativa de estos autores como componentes de un grupo, cuyo núcleo se mantiene en los sucesivos intentos renovadores, es también alabada por su disciplina, renuncia al lucimiento y supeditación al tratamiento escénico.
Juan de la Cueva y su Tragedia de Los siete Infantes de Lara
Authors: Froldi Rinaldo
Published: December 2012

Este artículo examina, en el marco de la literatura teatral española, la tragedia de finales del siglo XVI y, en particular, la Tragedia de los siete Infantes de Lara, de Juan de la Cueva. La histórica leyenda, narrada en las crónicas y en los romances, es asumida en el teatro solo en su parte final: la parte inicial se confía a las narraciones de algunos personajes. La estructura de la tragedia es original: Juan de la Cueva procede a través de «cuadros» sucesivos que se refieren a los episodios más dramáticamente sugerentes. Es destacable el interés del poeta por el valor de la palabra y por la búsqueda formal y culta, no sin algunos abusos retóricos. El ensayo pone de relieve las características del gusto humanístico que inspira a Cueva, así como los contradictorios puntos de vista en la historia crítica de esta composición, que posiblemente tuvo el mérito de levantar admiratio, pero también de elevar moralmente al público, como el poeta se propuso.
Un libelo antijudío en la literatura popular impresa del siglo XVI
Authors: Sánchez Pérez María
Published: December 2012

En este artículo se edita y estudia un libelo antijudío conservado en un pliego suelto poético del siglo XVI y atribuido al ciego coplero Francisco González de Figueroa. Gracias a un rastreo de diversas fuentes medievales y coetáneas, hispánicas y extranjeras, relacionadas con las acusaciones de crímenes rituales contra los judíos, hemos comprobado que esta narración es un eslabón más de una larga cadena de libelos de sangre antijudíos surgidos en Europa, que tuvieron una amplia y dilatada difusión durante varios siglos.
Imprenta y crítica textual: la iconografía del Libro de las maravillas del mundo de Juan de Mandevilla
Authors: Rodríguez Temperley María Mercedes
Published: December 2012

El surgimiento de la imprenta significó un cambio sustantivo en el modo de circulación de los textos, hasta entonces de difusión manuscrita, e implicó asimismo un grado de participación cada vez mayor de impresores y cajistas sobre las obras, en detrimento de la figura autorial. Entre las innovaciones introducidas se destaca la inclusión de grabados xilográficos, destinados a ilustrar secciones del texto o a funcionar como recurso mnemotécnico. Sin embargo, dicho corpus xilográfico ha sido a menudo olvidado por los editores modernos, quienes al momento de realizar ediciones críticas de impresos antiguos, privilegian —comprensiblemente— las variantes textuales, pero por lo general omiten toda referencia a las variaciones iconográficas. En nuestra edición crítica de los cinco impresos castellanos del siglo XVI del Libro de las maravillas del mundo, de Juan de Mandevilla, advertimos que las xilografías varían de una edición a otra, llegando incluso a desviar el significado del texto escrito o introduciendo variantes textuales sólo explicables en relación con las imágenes que acompañan el texto. Por ello, consideramos que el aparato crítico debería dar cuenta de estos cambios iconográficos del mismo modo en que lo hace con las variantes léxicas.
El otro y su desplazamiento en la última literatura de viaje
Authors: Almarcegui Patricia
Published: December 2012

Este artículo pretende avanzar en el estudio de la representación del Otro en la literatura de viaje. Para ello, presenta una serie de ejemplos puntuales que recogen algunos de los momentos de la evolución del término heredado de la antropología. Para, finalmente analizar la última literatura, que muestra el cambio de significado o desplazamiento que ha sufrido dicha categoría.
Attitudes Toward Product Messages on Social Media
Authors: Chung Christina , Austria Kristine P.
Published: December 2012

This study investigates consumers’ motivations behind social media usage and attitudes toward product messages on social media sites and how the product messages affect consumer online shopping perspectives. An integrated conceptual model is proposed based on the Uses and Gratifications theory and the concepts of hedonic shopping value and impulsive shopping behavior. Structural Equation Modeling (SEM) is used to test the structural model and hypotheses. The proposed conceptual model shows a good model fit. The results and findings found from this study are explained in detail further in the article.
What Drives Online Compulsive Buying
Authors: Lee Eun-Jung , Lee Seung Sin , Park JungKun
Published: December 2012

An increase in e-commerce activity has both positive and negative consequences for consumers. The ease with which experienced online shoppers can access a broad assortment of goods and services are likely to contribute to compulsive buying behavior is an example of this. Although researchers have examined factors related to offline compulsive buying, little is known about online compulsive buying behavior. This study examines the influence of perceived skill and knowledge, facilitating conditions, attitude toward online shopping, and actual online purchasing behavior on the tendency to engage in compulsive buying online. The moderating effect of self-esteem is examined as well. As expected, active online shopping coupled with low esteem may potentially lead to a tendency to engage in compulsive online shopping.
Increased Myeloid-Derived Suppressor Cells in Gastric Cancer Correlate with Cancer Stage and Plasma S100A8/A9 Proinflammatory Proteins
Authors: Wang Linda , Chang Esther W. Y. , Wong Siew Cheng , Ong Siew-Min , Chong Debra Q. Y. , Ling Khoon Lin
Published: December 2012

Immune dysfunction may contribute to tumor progression in gastric cancer (GC) patients. One mechanism of immune dysfunction is the suppression of T cell activation and impairment of the efficacy of cancer immunotherapy by myeloid-derived suppressor cells (MDSCs). We assessed the phenotype and immunosuppressive function of MDSCs in GC patients. We further investigated the role of S100A8/A9 in GC and the relationship between S100A8/A9 and MDSC function. Lastly, the effect of MDSCs on survival rates and its potential as a prognostic factor in GC patients were investigated. MDSCs from PBMCs of GC patients were identified by comparing the expression of specific surface markers with PBMCs from healthy individuals. The ability of MDSCs to suppress T lymphocyte response and the effect of S100A8/A9 and RAGE blocking were tested in vitro by (autologous) MLR. GC patients had significantly more MDSCs than healthy individuals. These MDSCs suppressed both T lymphocyte proliferation and IFN-γ production and had high arginase-I expression. Levels of S100A8/A9 in plasma were higher in GC patients compared with healthy individuals, and they correlated with MDSC levels in the blood. Blocking of S100A8/A9 itself and the S100A8/A9 receptor RAGE on MDSCs from GC patients abrogated T cell effector function. We found that high levels of MDSCs correlated with more advanced cancer stage and with reduced survival (p = 0.006). S100A8/A9 has been identified as a potential target to modulate antitumor immunity by reversing MDSC-mediated immunosuppression.
Energy analysis to assess the environmental sustainability of the dairy chain
Authors: Giovenzana Valentina , Fusi Alessandra , Beghi Roberto , Guidetti Riccardo
Published: December 2012

In the 1990s, attention was focused on saving energy and water with the aim of reducing production costs. Since the turn of this century, problems relating to the management of greenhouse gases have gradually assumed greater importance. Research has highlighted the problems that may arise regarding energy consumption in an Italian dairy chain. Using life-cycle assessment methods, the main steps along the production chain have been identified: breeding, dairy, and food store (FS). Our analysis shows that the different issues involved are often not easily reconcilable. Energy data need to undergo a careful and specific normalization process when dealing with specific data on different parameters (kWh/tmilk, kWh/tmilk processed, kWh/m2store). This study examined a variety of production cases (2 farms, 2 dairies, and 2 FSs) located in Lombardy, northern Italy, and electric and thermal energy consumption and carbon dioxide emissions were evaluated. A total of 2.8 kgCO2/kgcheese carbon dioxide emissions relating to the production process were recorded (39% breeding, 40% dairy, 1% FS). Further studies are needed in order to provide consumers with more precise and correct information (carbon labeling or green label). This may become an important element in consumer choice.
An update of the sediment fluxes investigation in the Rio Cordon (Italy) after 25 years of monitoring
Authors: Picco Lorenzo , Mao Luca , Rigon Emanuel , Moretto Johnny , Ravazzolo Diego , Delai Fabio , Lenzi Mario Aristide
Published: December 2012

Quantification of bed-load transport in high-gradient mountain streams is important, but the field data needed to test transport models are scarce and difficult to obtain. In the present study, we describe the experimental station for monitoring water and sediment fluxes built in 1985 on the Rio Cordon, a small step-pool channel in the eastern Italian Alps. The measuring station consists of an inclined frame that separates fine from coarse sediments (D>20 mm), which are continuously measured by a series of ultrasonic sensors fitted above a storage area. The acquired 25-year dataset, which comprises a high-magnitude/ low-recurrence flood event, has allowed a magnitude-frequency analysis of bed-load volumes to be performed. Results from a combined frequency analysis of peak water discharge and total bed-load volumes are presented. In addition, the integration between the sediment transport dataset and the repeated surveys of sediment sources and of channel changes allowed us to assess the geomorphological effectiveness of different flood events. Despite the importance of the experimental station for making these bed-load observations possible, its maintenance costs are not low and these may have an impact on its future existence. At the same time, improving current instrumentation and future installations with novel technology would make the station an ideal location for calibrating surrogate techniques for sediment transport monitoring.
Vernacular farm buildings in landscape planning: a typological analysis in a southern Italian region
Authors: Picuno Pietro
Published: December 2012

Farm buildings play a central role in the environmental characteristics of agricultural land. Over the centuries they have accompanied the development of the agricultural activities of man who has thereby been able to breed cattle, to grow and yield crops, and to store, transform and process agricultural products in a functional and efficient way. Farm buildings have allowed man to work in intensive conditions unaffected by the external climate. On the other hand, constructions built by farmers marked their territory, influencing and steering the spontaneous development of nature while leading to production that enabled man to get food. In the present paper, a typological analysis of farm buildings was conducted with reference to the Basilicata region, a southern Italian region rich in a history and culture connected with its traditional agricultural vocation, where rural houses still remain as witnesses to the social and cultural changes that have taken place over the years. Vernacular farm buildings, synthesizing in their architectural expression the culture, traditions and ways of life of generations of rural populations, were identified, analyzed and typologically classified all over the regional land. The results showed that many of the vernacular farm buildings visited are now abandoned; the technical survey often showed a situation of structural and functional degradation that makes their restoration difficult and expensive. Possible ways of reuse, making their recovery more economically profitable are, therefore, analyzed and discussed.
Stress-sensitive neurosignalling in depression: an integrated network biology approach to candidate gene selection for genetic association analysis
Authors: Eekelen J. Anke M. van , Ellis Justine A. , Pennell Craig E. , Saffery Richard , Mattes Eugen , Craig Jeff , Olsson Craig A.
Published: December 2012

Genetic risk for depressive disorders is poorly understood despite consistent suggestions of a high heritable component. Most genetic studies have focused on risk associated with single variants, a strategy which has so far only yielded small (often non-replicable) risks for depressive disorders. In this paper we argue that more substantial risks are likely to emerge from genetic variants acting in synergy within and across larger neurobiological systems (polygenic risk factors). We show how knowledge of major integrated neurobiological systems provides a robust basis for defining and testing theoretically defensible polygenic risk factors. We do this by describing the architecture of the overall stress response. Maladaptation via impaired stress responsiveness is central to the aetiology of depression and anxiety and provides a framework for a systems biology approach to candidate gene selection. We propose principles for identifying genes and gene networks within the neurosystems involved in the stress response and for defining polygenic risk factors based on the neurobiology of stress-related behaviour. We conclude that knowledge of the neurobiology of the stress response system is likely to play a central role in future efforts to improve genetic prediction of depression and related disorders.
Mathematics education, democracy and development: Exploring connections
Authors: Vithal Renuka
Published: December 2012

Mathematics education and its links to democracy and development are explored in this article, with specific reference to the case of South Africa. This is done by engaging four key questions. Firstly, the question of whether mathematics education can be a preparation for democracy and include a concern for development, is discussed by drawing on conceptual tools of critical mathematics education and allied areas in a development context. Secondly, the question of how mathematics education is distributed in society and participates in shaping educational possibilities in addressing its development needs and goals is used to examine the issues emerging from mathematics performance in international studies and the national Grade 12 examination; the latter is explored specifically in respect of the South African mathematics curriculum reforms and teacher education challenges. Thirdly, the question of whether a mathematics classroom can be a space for democratic living and learning that equally recognises the importance of issues of development in contexts like South Africa, as a post-conflict society still healing from its apartheid wounds, continuing inequality and poverty, is explored through pedagogies of conflict, dialogue and forgiveness. Finally the question of whether democracy and development can have anything to do with mathematics content matters, is discussed by appropriating, as a metaphor, South Africa’s Truth and Reconciliation Commission’s framework of multiple ‘truths’, to seek links within and across the various forms and movements in mathematics and mathematics education that have emerged in the past few decades.
Mathematics education, democracy and development: A view of the landscape
Authors: Vithal Renuka , Skovsmose Ole
Published: December 2012

No abstract available.
On the Torsion of Brieskorn Modules of Homogeneous Polynomials
Authors: Shabbir Khurram
Published: December 2012

Let

f\in \mathbb C[X_1,...,X_n]

be a homogeneous polynomial and

B(f)

be the corresponding Brieskorn module. We describe the torsion of the Brieskorn module

B(f)

for

n = 2

and show that any torsion element has order

1

. For

n > 2

, we find some examples in which the torsion order is strictly greater than

1

.
Knit Products of Some Groups and Their Applications
Authors: Ateş Firat , Çevik A. Sinan
Published: December 2012

Let

G

be a group with subgroups

A

and

K

(not necessarily normal) such that

G = AK

and

A \cap K = \{1\}

. Then

G

is isomorphic to
the knit product
, that is, the “two-sided semidirect product” of

K

by

A

. We note that knit products coincide with
Zappa-Szep products
(see [18]).

In this paper, as an application of [2, Lemma 3.16], we first define a presentation for the knit product

G

where

A

and

K

are finite cyclic subgroups. Then we give an example of this presentation by considering the (extended) Hecke groups. After that, by defining the Schur multiplier of

G

, we present sufficient conditions for the presentation of

G

to be efficient. In the final part of this paper, by examining the knit product of a free group of rank

n

by an infinite cyclic group, we give necessary and sufficient conditions for this special knit product to be subgroup separable.
A Note on Primes Between Consecutive Powers
Authors: Bazzanella Danilo
Published: December 2012

In this paper we carry on the study of the distribution of prime numbers between two consecutive powers of integers.
Local Structure of Brill-Noether Strata in the Moduli Space of Flat Stable Bundles
Authors: Martinengo Elena
Published: December 2012

We study the Brill-Noether stratification of the coarse moduli space of locally free stable and flat sheaves of a compact Kähler manifold, proving that these strata have quadratic algebraic singularities.
A Group of Automorphisms of the Rooted Dyadic Tree and Associated Gelfand Pairs
Authors: D'Angeli Daniele , Donno Alfredo
Published: December 2012

In this paper we study the group

G

of automorphisms of the rooted dyadic tree generated by translation by 1 and multiplication by an odd integer

q

, showing that

G

admits a self-similar presentation and it is isomorphic to the Baumslag–Solitar group

\mathit{BS}_q

. Moreover, we show that the action of

G

on each level of the tree gives rise to a Gelfand pair.
A Geometric Realization of $sl(6, \mathbb C)$
Authors: Gaiffi Giovanni , Grassi Michele
Published: December 2012

Given an orientable weakly self-dual manifold

X

of rank two, we build a geometric realization of the Lie algebra

\boldsymbol{sl}(6,\mathbb C)

as a naturally defined algebra

\mathcal L_{\mathbb C}

of endomorphisms of the space of differential forms of

X

. We provide an explicit description of Serre generators in terms of natural generators of

\mathcal L_{\mathbb C}

. This construction gives a bundle on

X

which is related to the search for a natural Gauge theory on

X

. We consider this paper as a first step in the study of a rich and interesting algebraic structure.
A Property of Generalized McLain Groups
Authors: Arikan Ahmet
Published: December 2012

In this short note we show that if
S
is a connected unbounded poset and
R
a ring with no zero divisors, then a generalized McLain group
G
(
R
,
S
) with trivial center is a product of two proper normal subgroups.
Fibrant Presheaves of Spectra and Guillén–Navarro Extension
Authors: Rubió i Pons Llorenç
Published: December 2012

In this remark we prove that the Guillén–Navarro extension of a presheaf of spectra in the category of algebraic varieties over a field of characteristic zero, when exists, coincides up to weak equivalence with the fibrant replacement of the presheaf in the injective model category structure with the cd-topology of abstract blow-ups.
A Duality Result for Moduli Spaces of Semistable Sheaves Supported on Projective Curves
Authors: Maican Mario
Published: December 2012

We show that the map sending a sheaf to its dual gives an isomorphism of the moduli space of semistable sheaves with fixed multiplicity and Euler characteristic and supported on projective curves to the moduli space of semistable sheaves of dimension one on the projective space with the same multiplicity but with opposite Euler characteristic.
Fair-Sized Projective Modules
Authors: Příhoda Pavel
Published: December 2012

We investigate a condition on particular chains of ideals that allows us to determine properties of infinitely generated modules over noetherian rings. The results apply to semilocal noetherian rings, integral group rings of finite groups and universal enveloping algebras of solvable Lie algebras of finite dimension.
Dihedral F-Tilings of the Sphere by Equilateral and Scalene Triangles-I
Authors: d'Azevedo Breda Ana M. , Ribeiro Patrícia S. , Santos Altino F.
Published: December 2012

The study of dihedral f-tilings of the Euclidean sphere

S^2

by triangles and

r

-sided regular polygons was initiated in 2004 where the case

r = 4

was considered [6]. In a subsequent paper [1], the study of all spherical f-tilings by triangles and

r

-sided regular polygons, for any

r ≥ 5

, was described. Later on, in [3] the classfication of all f-tilings of

S^2

whose prototiles are an equilateral triangle (a 3-sided regular polygon) and an isosceles triangle are obtained. In this paper we extend these results presenting the study of all spherical f-tilings by equilateral triangles and scalene triangles in a particular way of adjacency. For this particular case of adjacency, we get two continuous families of f-tilings denoted by

\mathcal F_1^δ

and

\mathcal F_2^δ

. The combinatorial structure including the transitive properties under the action of their symmetry groups is given in Table 1.
A Short Proof of the Hölder-Poincaré Duality for $L_p$-Cohomology
Authors: Gol'dshtein Vladimir , Troyanov Marc
Published: December 2012

We give a short proof of the duality theorem for the reduced

L_p

-cohomology of a complete oriented Riemannian manifold.
Metric Currents and Geometry of Wasserstein Spaces
Authors: Granieri Luca
Published: December 2012

We investigate some geometric aspects of Wasserstein spaces through the continuity equation as worked out in mass transportation theory. By defining a suitable homology on the flat torus

\mathbb T^n

, we prove that the space

\mathcal P_p(\mathbb T^n)

has non-trivial homology in a metric sense. As a byproduct of the developed tools, we show that every parametrization of a Mather’s minimal measure on

\mathbb T^n

corresponds to a mass minimizing metric current on

\mathcal P_p(\mathbb T^n)

in its homology class.
The Schur Multiplier of a Generalized Baumslag-Solitar Group
Authors: Robinson Derek J.S.
Published: December 2012

The structure of the Schur multiplier of an arbitrary generalized Baumslag-Solitar group is determined and applications to central extensions are described.
Global Weak Solutions of the Navier–Stokes Equations with Nonhomogeneous Boundary Data and Divergence
Authors: Farwig Reinhard , Kozono H. , Sohr H.
Published: December 2012

Consider a smooth bounded domain

\Omega\subseteq\mathbb R^3

with boundary

\partial\Omega

, a time interval

[0,T)

, with

T\in(0,\infty]

, and the Navier–Stokes system in

[0,T) \times \Omega

, with initial value

u_0 \in L^2_{\sigma} (\Omega)

and external force

f= {\mathrm{div}}\,F

,

F \in L^2 (0,T;L^2(\Omega))

. Our aim is to extend the well-known class of Leray-Hopf weak solutions

u

satisfying

u_{\vert{\partial \Omega}}=0

,

{\mathrm{div}}\,u=0

to the more general class of Leray-Hopf type weak solutions

u

with general data

u_{\vert{\partial \Omega}} =g

,

{\mathrm{div}}\,u=k

satisfying a certain energy inequality. Our method rests on a perturbation argument writing

u

in the form

u=v+E

with some vector field

E

in

[0,T)\times \Omega

satisfying the (linear) Stokes system with

f=0

and nonhomogeneous data. This reduces the general system to a perturbed Navier–Stokes system with homogeneous data, containing an additional perturbation term. Using arguments as for the usual Navier–Stokes system we get the existence of global weak solutions for the more general system.
Root Separation for Reducible Monic Quartics
Authors: Dujella Andrej , Pejkovič Tomislav
Published: December 2012

We study root separation for reducible monic integer polynomials of degree four. If

\text{H}(P)

is the height and

\mathrm{sep}(P)

the minimal distance between two distinct roots of a separable integer polynomial

P(x)

, and

\mathrm{sep}(P)=\mathrm{H}(P)^{-e(P)}

, we show that

\limsup e(P)=2

, where limsup is taken over all reducible monic integer polynomials

P(x)

of degree

4

.
Stabilité de l'holonomie sans structure de Frobenius: cas des courbes
Authors: Caro Daniel
Published: December 2012

By using Christol and Mebkhout's algebrization and finiteness theorem, we prove that in the case of smooth curves, Berthelot’s strongest conjecture on the stability of holonomicity is still valid without Frobenius structure but under some non-Liouville type hypotheses.
Formal Extension of the Whitney Functor and Duality
Authors: Martins Ana Rita , Monteiro Fernandes Teresa
Published: December 2012

On a complex manifold we introduce the formal extension of the Whitney functor and the polynomial extension of the tempered cohomology functor, and prove a natural topological duality between them.
Functional Solutions for a Plane Problem in Magnetohydrodinamics
Authors: Cimatti Giovanni
Published: December 2012

We study the flow in a channel of a fluid obeying the equations of magnetohydrodynamics under the hypotheses that viscosity, resistivity and thermal conductivity depend on the temperature. The special class of solutions for which two functional dependences between temperature and magnetic field and velocity and magnetic field exist is considered.
Opérateurs invariants sur un immeuble affine de type $\tilde B_n (n\ge3)$
Authors: Kellil Ferdaous , Rousseau Guy
Published: December 2012

We consider a building

\Delta

of type

\widetilde{B}_n~(n\geq 3)

, different subsets

\mathcal{S}'

of the set

\mathcal{S}

of vertices in

\Delta

and an automorphism group

G

strongly transitive and type preserving on

\Delta

. We prove that the algebra of

G

-invariant operators acting on the space of functions on

\mathcal{S}'

is not commutative (contrarily to the classical results) and we give its generators. We give also the precise structure of some commutative subalgebras.
Políticas públicas de acesso à informação científica: Portal de Periódicos da Capes
Authors: Santana Jaciane Freire , Garcia Joana Coeli Ribeiro , Teles Lorena , Aguiar Niliane
Published: December 2012

Focaliza as políticas de C&T no Brasil, ressaltando o papel desempenhado pelo Portal de Periódicos da Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Capes). Por meio de um estudo exploratório/bibliográfico, apresenta-se o histórico e a evolução das atividades exercidas pelo Portal. O texto revisita os conceitos de políticas públicas de acesso a informação no Brasil, com ênfase para o Portal da Capes, por ser considerado a maior iniciativa de política pública de acesso a informação em C&T no Brasil, objetivando apresentar dados de acesso em termos de Brasil, Pernambuco e Nordeste. Conclui que deve existir um intenso e ininterrupto trabalho para modernização da plataforma, por meio do acréscimo de conteúdos, mas também da consonância com os requisitos de usabilidade e acessibilidade.
O impacto da curadoria digital dos dados de pesquisa na Comunicação Científica
Authors: Sales Luana Farias , Sayão Luís Fernando
Published: December 2012

Oferecer acesso aos dados gerados no decorrer das atividades científicas é um desejo cada vez mais relevante para a comunidade científica. Assim como existe uma tendência mundial em dar acesso livre aos resultados de pesquisa por meio da criação de repositórios digitais e da publicação de periódicos livres, existe também uma demanda em torno do acesso livre aos dados gerados pela pesquisa científica. A importância desses dados é cada vez mais patente, visto que eles que dão sustentação aos resultados que serão discutidos nas publicações acadêmicas tradicionais e podem servir de base para novos projetos. Por outro lado, o uso intensivo de computadores, de tecnologias de rede, instrumentação avançada e de simulação na pesquisa científica proporciona o surgimento de uma ciência inteiramente baseada nos fluxos de dados e de conjunto de objetos digitais armazenados em repositórios distribuídos globalmente. Essa nova forma de gerar e disseminar conhecimento é chamada de eScience. Os dados digitais gerados a partir dessa forma de praticar ciência precisam ser tratados e gerenciados de modo que a preservação por longo prazo, o acesso, a autenticidade e o reuso para novas pesquisas desses dados possam ser assegurados. Este trabalho visa apresentar o conceito de Curadoria Digital enquanto uma nova atividade de tratamento e representação da informação que, desenvolvida de forma correta, poderá alterar o ciclo da comunicação científica.
Acesso livre via repositórios: políticas de instituições brasileiras
Authors: Chalhub Tania , Benchimol Alegria , Guerra Claudia
Published: December 2012

Esta é uma pesquisa descritiva documental com o objetivo de analisar as políticas institucionais para criação e povoamento de repositórios de universidades e institutos de pesquisa brasileiros. Foi realizada busca no ROAR para levantar os repositórios brasileiros e no ROARMAP para identificar as políticas registradas por instituições brasileiras. Das 100 instituições brasileiras registradas no ROAR, 34 atendem ao critério de inclusão, porém somente três já efetuaram registro de suas políticas no ROARMAP, sejam elas: Universidade Federal do Rio Grande do Sul (UFRGS), Universidade Federal do Rio Grande (FURG) e Universidade de São Paulo (USP), a qual refere-se a teses. As políticas analisadas recomendam: o depósito das publicações científicas com revisão por pares (artigos de revistas, comunicações em conferências); disponibilização dos metadados imediatamente em Acesso Livre, respeitando períodos de embargo quando necessário; e incentivo para que o autor conserve a propriedade dos direitos autorais de suas publicações. Pode-se inferir que as políticas da UFRGS e FURG foram bem sucedidas, uma vez que os repositórios das mesmas são, respectivamente, o primeiro e o terceiro no ranking brasileiro em povoamento.
Evaluated kinetic and photochemical data for atmospheric chemistry: Volume VI – heterogeneous reactions with liquid substrates
Authors: Ammann M. , Cox R. A. , Crowley J. N. , Jenkin M. E. , Mellouki A. , Rossi M. J. , Troe J. , Wallington T. J.
Published: December 2012

Abstract. This article, the sixth in the ACP journal series, presents data evaluated by the IUPAC Task Group on Atmospheric Chemical Kinetic Data Evaluation. It covers the heterogeneous processes involving liquid particles present in the atmosphere, for which uptake coefficients and adsorption parameters have been presented on the IUPAC website since 2009. The article consists of an introduction and guide to the evaluation, giving a unifying framework for parameterisation of atmospheric heterogeneous processes. We provide summary sheets containing the recommended uptake parameters for the evaluated processes. The experimental data on which the recommendations are based are provided in data sheets in separate appendices for the four surfaces considered: liquid water, deliquesced halide salts, other aqueous electrolytes and sulfuric acid.
A Functional Group Oxidation Model (FGOM) for SOA formation and aging
Authors: Zhang X. , Seinfeld J. H.
Published: December 2012

Abstract. Secondary organic aerosol (SOA) formation from a volatile organic compound (VOC) involves multiple generations of oxidation that include functionalization and fragmentation of the parent carbon backbone and, likely, particle-phase oxidation and/or accretion reactions. Despite the typical complexity of the detailed molecular mechanism of SOA formation and aging, a relatively small number of functional groups characterize the oxidized molecules that constitute SOA. Given the carbon number and set of functional groups, the volatility of the molecule can be estimated. We present here a Functional Group Oxidation Model (FGOM) that represents the process of SOA formation and aging. The FGOM contains a set of parameters that are to be determined by fitting of the model to laboratory chamber data: total organic aerosol concentration, and O:C and H:C atomic ratios. The sensitivity of the model prediction to variation of the adjustable parameters allows one to assess the relative importance of various pathways involved in SOA formation. An analysis of SOA formation from the high- and low-NOx photooxidation of four C12 alkanes (n-dodecane, 2-methylundecane, hexylcyclohexane, and cyclododecane) using the FGOM is presented, and comparison with the Statistical Oxidation Model (SOM) of Cappa et al. (2012) is discussed.
Governing processes for reactive nitrogen compounds in the European atmosphere
Authors: Hertel O. , Skjøth C. A. , Reis S. , Bleeker A. , Harrison R. M. , Cape J. N. , Fowler D. , Skiba U. , Simpson D. , Jickells T. , Kulmala M. , Gyldenkærne S. , Sørensen L. L. , Erisman J. W. , Sutton M. A.
Published: December 2012

Abstract. Reactive nitrogen (Nr) compounds have different fates in the atmosphere due to differences in the governing processes of physical transport, deposition and chemical transformation. Nr compounds addressed here include reduced nitrogen (NHx: ammonia (NH3) and its reaction product ammonium (NH4+)), oxidized nitrogen (NOy: nitrogen monoxide (NO) + nitrogen dioxide (NO2) and their reaction products) as well as organic nitrogen compounds (organic N). Pollution abatement strategies need to take into account the differences in the governing processes of these compounds when assessing their impact on ecosystem services, biodiversity, human health and climate. NOx (NO + NO2) emitted from traffic affects human health in urban areas where the presence of buildings increases the residence time in streets. In urban areas this leads to enhanced exposure of the population to NOx concentrations. NOx emissions generally have little impact on nearby ecosystems because of the small dry deposition rates of NOx. These compounds need to be converted into nitric acid (HNO3) before removal through deposition is efficient. HNO3 sticks quickly to any surface and is thereby either dry deposited or incorporated into aerosols as nitrate (NO3−). In contrast to NOx compounds, NH3 has potentially high impacts on ecosystems near the main agricultural sources of NH3 because of its large ground-level concentrations along with large dry deposition rates. Aerosol phase NH4+ and NO3− contribute significantly to background PM2.5 and PM10 (mass of aerosols with an aerodynamic diameter of less than 2.5 and 10 μm, respectively) with an impact on radiation balance as well as potentially on human health. Little is known quantitatively and qualitatively about organic N in the atmosphere, other than that it contributes a significant fraction of wet-deposited N, and is present in both gaseous and particulate forms. Further studies are needed to characterise the sources, air chemistry and removal rates of organic N emissions.