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The growth-employment-poverty nexus in Latin America in the 2000s: Dominican Republic Country Study

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The growth-employment-poverty nexus in Latin America in the 2000s: Dominican Republic Country Study Cruces, Guillermo Antonio; Fields, Gary; Jaume, David José; Viollaz, Mariana During the 2000s, the Dominican Republic experienced above-average economic growth along with mixed results in labour market indicators. GDP per capita stagnated through 2004 and, for the most part, grew rapidly from 2005 through 2012. Comparing 2000 with 2012, many unfavourable developments were seen. Among them: an increase in unemployment; worsening in the employment composition by occupation and position; a substantial fall in labour earnings; and no progress in reducing poverty. The international crisis slowed economic growth but did not reverse it and had a negative effect on some labour indicators, which failed to return to pre-crisis levels by 2012.

The growth-employment-poverty nexus in Latin America in the 2000s: Costa Rica Country Study

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The growth-employment-poverty nexus in Latin America in the 2000s: Costa Rica Country Study Cruces, Guillermo Antonio; Fields, Gary; Jaume, David José; Viollaz, Mariana In the 2000s, Costa Rica experienced moderate economic growth and a general improvement in labour market conditions. From 2000 to 2012, Costa Rica grew at the Latin American average. Most labour market indicators improved during 2001–09 and 2010–12 (the series with comparable data). However, the unemployment rate increased in both periods, the mix of employment by occupations polarized from 2010 to 2012, and some poverty and inequality indicators increased from 2010 to 2012. The international crisis had substantial negative effects on the economic growth rate, unemployment, poverty, and inequality indicators, and not all of them recovered after the crisis.

Transición presidencial, frontes electorais e reconfiguración ideolóxica do campo político na Arxentina contemporánea

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Transición presidencial, frontes electorais e reconfiguración ideolóxica do campo político na Arxentina contemporánea Spota, Julio César Entre el amplio conjunto de problemáticas susceptibles de recibir atención analítica en elpanorama político argentino contemporáneo, este artículo se ocupa de tres ejes de reflexióncuyo contenido político-institucional los señala como elementos concatenados. En primerlugar se describen los lineamientos generales de la transición presidencial a la luz de la experienciapolítica argentina reciente. Luego se realiza un repaso orientado a presentar losfrentes electorales en formación ante la inminencia de la contienda presidencial. Por último ,y en vinculación directa con lo anterior, se ensaya una discusión ocupada de analizar lareconfiguración del terreno ideológico argentino, donde las nociones opositivas de izquierda y derecha ceden su centralidad teórica a favor de una dicotomía teóricamente irreconciliable:República frente a Populismo.

Entre las intervenciones feministas y el arte de mujeres: Aportes, rupturas y derivas contemporáneas de los cruces entre arte y feminismos

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Entre las intervenciones feministas y el arte de mujeres: Aportes, rupturas y derivas contemporáneas de los cruces entre arte y feminismos; Women’s art or feminist artistic interventions: Contemporary intersections between art and feminism Gutierrez, Maria Laura El presente ensayo indaga los cruces, aportes y derivas de las intervenciones artísticas feministas en el arte contemporáneo. Se organiza a partir de una cronología de sus debates iniciales y se pregunta sobre los modos en que se cristalizó en la actualidad, como si de sinónimos se tratara, la idea del arte feminista y arte de mujeres o de género en los diferentes acercamientos a las teorías y metodologías artístico-visuales actuales. En sus preguntas finales, busca indagar en los aportes que desde la geopolítica del sur pueden hacerse a estas intervenciones del archivo feminista artístico para recuperar la politicidad que toda intervención feminista en el arte tiene.; This paper explores the complex issue of feminist artistic interventions in contemporary art. It traces a genealogy of the debates and main questions around feminist artistic interventions and tries to tackle down the ways in which the notions of feminist art and women’s art have been crystallized as synonyms both by gender theories as well as by visual art’s methodological approaches. Finally, this work highlights the contributions Latin American feminist interventions have made to the art and political fields from a southern geo-political location.

Ni Dios ni Destino: El Teatro de la Experiência de Flávio de Carvalho

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Ni Dios ni Destino: El Teatro de la Experiência de Flávio de Carvalho Cabezas Baamonde, Laura María Soledad En la obra de teatro O Bailado do Deus Morto de 1931, el ingeniero y artista paulista Flávio de Carvalho propone, a través de su proyecto “Teatro de la Experiencia”, al primitivismo como una forma de vida heterodoxa que no necesita ni de Dios ni del Destino para habitar el mundo. En la línea inaugurada por Nietzsche y en consonancia con Artaud, Carvalho crea, en su texto dramático, la posibilidad de una vida que exceda los límites de los humano y problematice la configuración del cuerpo en la modernidad.; In the play O Bailado do Deus Morto of 1931, the engineer and artista paulist Flávio de Carvalho proposes, through its project "Theatre of Experience", primitivism as an unorthodox form of life that has no need of God or Doom to inhabit the world. In the line inaugurated by Nietzsche and consistent with Artaud, Carvalho created, in his dramatic text, the possibility of life beyond the limits of the human and problematice body configuration in modernity.

Tecnología lítica y contexto geoarqueológico de la ocupación temprana del Sitio 2 de la Localidad Arqueológica Amalia, provincia de Buenos Aires (Argentina)

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Tecnología lítica y contexto geoarqueológico de la ocupación temprana del Sitio 2 de la Localidad Arqueológica Amalia, provincia de Buenos Aires (Argentina); Lithic technology and geoarchaeological context in the early occupation of the archaeological Site 2 of the Amalia locality, province of Buenos Aires (Argentina) Bonnat, Gustavo Federico; Mazzanti, Diana Leonis; Martinez, Gustavo Adolfo En el presente trabajo se exponen los resultados del análisis tecno-morfológico del conjunto artefactual lítico procedente de una pequeña cueva que compone un sector del Sitio 2 de la localidad arqueológica Amalia (LAA). El sitio se encuentra en un pequeño cerro ubicado en un ambiente de transición entre las sierras de Tandilia y Llanura Interserrana Bonaerense. El objetivo central es interpretar y discutir el contexto arqueológico correspondiente a la ocupación humana basal datada en la transición Pleistoceno-Holoceno. Este sitio fue utilizado de modo efímero y presenta materiales arqueológicos producidos sobre rocas transportadas desde afloramientos cercanos del sitio, de la región de Tandilia, como otras rocas cuya procedencia corresponde a lugares distantes que superan los 500 km. Se analiza también el contexto geoarqueológico donde se hallaron los artefactos líticos, el cual responde a un cambio en la sedimentación vinculado a oscilaciones en las condiciones paleoclimáticas propias del inicio de ciclos más húmedos.; In this paper, we present the results of techno-morphological analysis carried on lithic artifacts from the site 2 of Amalia archaeological locality (LAA). This site is nestled on a small hill located in a transitional environment between two geological provinces: the Tandilia range and the Pampas plains. Our main goal is interpreting and discussing the archaeological context of the oldest human occupation dated to the Pleistocene-Holocene transition. The place was used as an ephemeral camp and presents evidences of many archaeological artifacts produced on different rock types transported from different regions of the Tandilia hills, as well as other rocks from sources located at 500 km from the site. In regard to the geoarchaeological context, the analyses show a change in the sedimentation, which is related to the fluctuations of the climatic conditions and indicate wetter cycles in the beginning of the Holocene.

Tentativas del viajero contemporáneo: Oliverio Coelho y sus “Apuntes en viaje”

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Tentativas del viajero contemporáneo: Oliverio Coelho y sus “Apuntes en viaje” Gomez, Facundo Enrique La serie de columnas que el escritor argentino Oliverio Coelho ha publicado en el diario Perfil conforma un corpus que puede ser incluido en la tradición literaria del relato de viaje. Desde esta perspectiva, es posible analizar las operaciones que Coelho realiza en torno a las distintas convenciones y tópicos del género, en función de construir una textualidad heterogénea, cruzada por el ensayo sociológico, el diario autobiográfico y la reflexión literaria. A lo largo de sus columnas, van siendo reformuladas las ciudades emblemáticas de los viajeros latinoamericanos y también los procedimientos usuales para representar esos y otros lugares, como la narración de anécdotas o la descripción exótica. Los textos de Coelho indagan de esta forma la problemática del relato de viaje en un mundo contemporáneo en el que las coordenadas geopolíticas y los linajes narrativos configuran un escritor viajero con particulares características y retóricas.; The series of columns published by Oliverio Coelho, the Argentine writer, in the newspaper Perfil constitute a corpus that could be included as a part of the tradition of travel literature. From this perspective, it is possible to analyze how Coelho rethinks different topics and conventions in order to build up a heterogeneous textuality, interrelated with other genres such as sociological essay, autobiographical diary and literary reflection. Throughout his work, the representation of emblematic cities for Latin American travelers are rephrased, as well as certain procedures to represent those and other places, such as anecdotal narration or exotic description. Coelho’s columns discuss the issue of travel literature in a contemporary world, where the transformation of geopolitical frontiers and narrative traditions implies a new configuration of the traveler writer, with particular features and rhetoric.

¿Dónde están los machos?: Sindicalización anarquista, masculina y femenina, en la industria del dulce (Buenos Aires, 1920-1929)

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¿Dónde están los machos?: Sindicalización anarquista, masculina y femenina, en la industria del dulce (Buenos Aires, 1920-1929) Scheinkman, Ludmila Este trabajo da cuenta de las tensiones en la construcción de identidades militantes en clave de géneros, en la experiencia de sindicalización de los obreros y obreras del dulce porteños durante la década del veinte, analizando El Obrero en Dulce, periódico de la organización gremial anarquista Sociedad Obreros en Dulce Unidos. En una rama industrial que se estaba feminizando, en un contexto de crisis del anarquismo, los activistas varones construyeron una identidad militante en clave excluyentemente masculina. Creemos que este factor debe ser ponderado a la hora de evaluar las dificultades organizacionales del gremio, que no supo "ganar" a su causa a las mujeres, siendo, por el contrario, expulsivo para ellas.

Introduction: Searching for the Natural Origins of Content: Challenging Research Project or Benighted Quest?

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Introduction: Searching for the Natural Origins of Content: Challenging Research Project or Benighted Quest? Hutto, Daniel D.; Satne, Glenda Lucila This paper introduces this special issue which is focused on its target paper - The Natural Origins of Content. The target paper has had a robust and considered set of fifteen replies; a literal A to Z of papers (from Abramova’s to Zawidzki’s). This extended introduction explains the background thinking and challenges that motivated the target article's proposed research programme. It also provides a sneak peak preview and navigational aid to the special issue’s contents. Brief highlights of each commentary are provided and they are grouped together under broad headings. We do not attempt to give detailed replies to these suggestions or answer the various critiques at this stage of the proceedings: that is for future work.

La última xo´on del fin del mundo: Cuerpos, tiempo y espacio en las estéticas descoloniales selknam

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La última xo´on del fin del mundo: Cuerpos, tiempo y espacio en las estéticas descoloniales selknam Bidaseca, Karina Andrea En el campo de la antropología la crisis de la representación marcó cierto escepticismoetnográfico que habilitó nuevos lenguajes de subversión. El tratamiento de la narración visualen la literatura de la teórica feminista y artista vietnamita Trinh T. Minha-ha sobre mundos nooccidentales, es parte de estos nuevos tiempos. En este ensayo deseo reflexionar sobre la vidacotidiana de Lola Kiepja, la última xo´on Selknam de Tierra del Fuego, para proponer unaestética descolonial. Me interesa revisar su relato utilizando las herramientas que provienen delfeminismo negro (tal el concepto de interseccionalidad) y del feminismo descolonial.

Historia del arte y universidad : momentos clave en la Facultad de Filosofía y Letras de la UBA (1915-1986)

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Historia del arte y universidad : momentos clave en la Facultad de Filosofía y Letras de la UBA (1915-1986); History of art and university. Key moments in the School of Philosophy and Literature of the University of Buenos Aires (1915-1986) García, Carla Guillermina; Schwartzman, Ana Este artículo recupera los recorridos cardinales de la historia del arte en la Facultad de Filosofía y Letras de la Universidad de Buenos Aires, considerando el período previo a la creación de la carrera específica en el año 1963 y las posteriores instancias de cambios y reajustes de contenidos en relación a contextos políticos concretos e influjos de figuras emergentes. Nuestra principal documentación la constituyen los programas de estudio, que permiten conocer los procesos de selección y abordaje metodológico de los contenidos y temas en el ámbito académico, y señalar los supuestos conceptuales que rigieron en la concepción de la disciplina Historia del Arte desde la Universidad.; This article retrieves the cardinal paths of art history at the School of Philosophy and Literature of the University of Buenos Aires, considering the period before the creation of the specific course in 1963 and the subsequent instances of changes in content and readjustments related to political context and influence of emerging figures. The study programs constitute our main documentation as an analytic tool that allows us to study the selection process and methodological approach of contents and topics in the academic field and point out the conceptual assumptions that ruled over the conception of art history as an academic discipline.

Reflexiones sobre la relación entre la comunidad académica de defensa y el CDS

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Reflexiones sobre la relación entre la comunidad académica de defensa y el CDS; Reflections on the relationship between the academic defense community and the CDS Vitelli, Marina Gisela El artículo pone en valor el rol de los expertos académicos en las iniciativas de cooperación regional. Si bien el CDS valoriza las instancias de investigación y reflexión sobre conceptos y enfoques de defensa, no incluye de forma apropiada a la comunidad académica de estudios de defensa existente en Sudamérica.; While the South American Defense Council takes seriously the importance of research and discussion on defense policy concepts and approaches, it still does not appropriately include the extensive South American academic community of defense studies. The article highlights the role of academic experts in regional cooperation.

Petrov type of linearly perturbed type-D spacetimes

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Petrov type of linearly perturbed type-D spacetimes Araneda, Bernardo Gabriel; Dotti, Gustavo Danie We show that a spacetime satisfying the linearized vacuum Einstein equations around a type-D background is generically of type I, and that the splittings of the principal null directions (PNDs) and of the degenerate eigenvalue of the Weyl tensor are non-analytic functions of the perturbation parameter of the metric. This provides a gauge-invariant characterization of the effect of the perturbation on the underlying geometry, without appealing to differential curvature invariants. This is of particular interest for the Schwarzschild solution, for which there are no signatures of the even perturbations on the algebraic curvature invariants. We also show that, unlike the general case, the unstable even modes of the Schwarzschild naked singularity deform the Weyl tensor into a type-II one.

Alternativas del intervencionismo estatal en la agroindustria del azúcar: Argentina y Brasil, 1880-1938

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Alternativas del intervencionismo estatal en la agroindustria del azúcar: Argentina y Brasil, 1880-1938; Alternatives of state interventionism in the sugar agroindustry: Argentina and Brazil, 1880-1938 Campi, Daniel Enrique A.; Pinto de Moura Filho, Héctor; Bravo, Maria Celia El texto propone un análisis comparativo de las diversas alternativas de intervención estatal en la agroindustria del azúcar que se implementaron en Brasil y Argentina a partir de la década de 1880. Crisis de sobreproducción, pérdida de competencia en el mercado internacional, conflictos entre diferentes actores y zonas productoras dieron origen a arreglos institucionales en los dos países que perseguían valorizar el producto, conciliar intereses y hacer previsible el comportamiento de un mercado siempre complejo. El análisis se cierra en 1937-1938 con la inauguración de la experiencia del Estado Novo en Brasil, que profundizó el intervencionismo, y el fracaso en la Argentina de un intento de aprobar una ley que habría involucrado de manera decisiva el Estado en el desarrollo azucarero.; This paper proposes a comparative analysis of the various options of State intervention in the sugar agroindustry, which were implemented in Brazil and Argentina beginning in the 1880s. Overproduction crisis, loss of international competitiveness, conflicts among the various actors and production zones, all led to new institutional arrangements in each country, as they sought to increase prices, harmonize interests and bring planning to an always complex market. The analysis closes in 1937-1938 with the start of the Estado Novo experience in Brazil, which increases state intervention, and the failure, in Argentina, of the attempt to approve a law which would involve the State decisively in the development of the sugar industry.

Cognitive impairment and morphological changes in the dorsal hippocampus of very old female rats

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Cognitive impairment and morphological changes in the dorsal hippocampus of very old female rats Morel, Gustavo Ramón; Andersen, Tomas; Pardo, Joaquin; Zuccolilli, Gustavo Oscar; Cambiaggi, Vanina Laura; Hereñú, Claudia Beatriz; Goya, Rodolfo Gustavo The hippocampus, a medial temporal lobe structure necessary for the formation of spatial memory, is particularly affected by both normal and pathologic aging. In previous studies, we observed a significant age-related increase in dopaminergic neuron loss in the hypothalamus and the substantia nigra of female rats, which becomes more conspicuous at extreme ages. Here, we extend our studies by assessing spatial memory in 4-6. month-old (young), 26-month-old (old) and 29-32-month-old (senile) Sprague-Dawley female rats as well as the age-related histopathological changes in their dorsal hippocampus. Age changes in spatial memory performance were assessed with a modified version of the Barnes maze test. We employed two probe trials (PTs), one and five days after training, respectively, in order to evaluate learning ability as well as short-term and longer-term spatial memory retention. A set of relevant hippocampal cell markers was also quantitated in the animals by means of an unbiased stereological approach. The results revealed that old rats perform better than senile rats in acquisition trials and young rats perform better than both aging groups. However, during short-term PT both aging groups showed a preserved spatial memory while in longer-term PT, spatial memory showed deterioration in both aged groups. Morphological analysis showed a marked decrease (94-97%) in doublecortin neuron number in the dentate gyrus in both aged groups and a reduction in glial fibrillary acidic protein-positive cell number in the stratum radiatum of aging rats. Astroglial process length and branching complexity decreased in aged rats. We conclude that while target-seeking activity and learning ability decrease in aged females, spatial memory only declines in the longer-term tests. The reduction in neuroblast number and astroglial arborescence complexity in the dorsal hippocampus are likely to play a role in the cognitive deficits of aging rats.

Effect of early addition of bone morphogenetic protein 5 (BMP5) to embryo culture medium on in vitro development and expression of developmentally important genes in bovine preimplantation embryos

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Effect of early addition of bone morphogenetic protein 5 (BMP5) to embryo culture medium on in vitro development and expression of developmentally important genes in bovine preimplantation embryos Garcia, Elina Vanesa; Miceli, Dora Cristina; Rizo, Gabriela; Valdecantos, Pablo Alberto; Barrera, Antonio Daniel Previous studies have reported that bone morphogenetic protein 5 (BMP5) is differentially expressed in the isthmus of bovine oviducts and it is present in the oviductal fluid. However, the specific action of this factor is unknown. To evaluate whether BMP5 exerts some effect during early bovine embryo development, gene expression of BMP5, BMP receptors, and the effect of exogenous BMP5 on in vitro development and expression of developmentally important genes were assessed. In experiment 1, pools of embryos at two-cell, four-cell, eight-cell, and blastocyst stages, derived from in vitro fertilization, were collected for analysis of BMP5 and BMP receptors (BMPR1A, BMPR1B, and BMPR2) messenger RNA (mRNA) expression. On the basis of previous results, in experiment 2, presumptive zygotes were cultured for the first 48 hours after insemination in CR1aa medium assaying three different treatments: (1) control (CR1aa); (2) vehicle control (CR1aa + 0.04 mM HCl), and (3) BMP5 treatment (CR1aa + 100 ng/mL of BMP5). The cleavage rate was evaluated 48 hours after insemination (Day 2), and then, embryos were transferred to CR1aa + 10% fetal bovine serum. The blastocyst rate was determined on Day 7. In experiment 3, pools of embryos at two-cell, four-cell, eight-cell, and blastocyst stages, derived from control and BMP5-treated groups, were collected for analysis of ID2 (BMP target gene), OCT4, NANOG, and SOX2 (pluripotency genes) mRNA expression. BMP5 transcripts were not detectable in any of the embryonic stages examined, whereas the relative mRNA abundance of the three BMP receptors analyzed was greater in early embryo development stages before maternal?embryonic transition, raising the possibility of a direct effect of exogenous BMPs on the embryo during the first developmental period. Although early addition of 100 ng/mL of BMP5 to the embryo culture medium had no effect on the cleavage rate, a significantly higher proportion of cleaved embryos developed to the blastocyst stage in the BMP5 group. Moreover, reverse transcription quantitative real-time polymerase chain reaction analysis showed a significant increase in the relative abundance of SOX2 in two-cell stage embryos, ID2 and OCT4 in eight-cell stage embryos, and NANOG and OCT4 in blastocysts derived from BMP5-treated embryos. In conclusion, our results report that early addition of BMP5 to the embryo culture medium had a positive effect on the blastocyst rate and affected the relative expression of BMP target and pluripotency genes, suggesting that BMP5 could play an important role in the preimplantation development of bovine embryos.

Draft Genome Sequence of the Entomopathogenic Bacterium Bacillus pumilus 15.1, a Strain Highly Toxic to the Mediterranean Fruit Fly Ceratitis capitata

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Draft Genome Sequence of the Entomopathogenic Bacterium Bacillus pumilus 15.1, a Strain Highly Toxic to the Mediterranean Fruit Fly Ceratitis capitata García Ramón, Diana Carolina; Palma, Leopoldo; Berry, Colin; Osuna, Antonio; Vilchez, Susana We present the draft whole-genome sequence of the entomopathogenic Bacillus pumilus 15.1 strain that consists of 3,795,691 bp and 3,776 predicted protein-coding genes. This genome sequence provides the basis for understanding the potential mechanism behind the toxicity and virulence of B. pumilus 15.1 against the Mediterranean fruit fly.

Victimización en la escuela: relación de la crianza y variables funcionales-disfuncionales del desarrollo

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Victimización en la escuela: relación de la crianza y variables funcionales-disfuncionales del desarrollo; Victimization at school: relationship of parenting and functional-dysfunctional developmental variables Samper García, Paula; Mestre Escrivá, Vicenta; Malonda, Elisabet; Mesurado, Maria Belen El presente estudio tiene como principal objetivo analizar elpapel diferencial de la crianza (apoyo y comunicación versus control), devariables funcionales del desarrollo (empatía y mecanismos de afrontamientofuncionales) y las variables disfuncionales (inestabilidad emocional yafrontamiento improductivo) en la victimización ocurrida en el entorno escolar,o por el contrario, con el apego entre pares. Participaron en el estudio418 alumnos, 224 chicas y 194 chicos adolescentes, entre 13 y 14 años,escolarizados en los niveles de 3º y 4º curso de Educación SecundariaObligatoria. Para analizar estas relaciones se llevó a cabo un modelo deecuaciones estructurales EQS. Los resultados obtenidos muestran que losestilos de crianza de apoyo y comunicación versus control negativo estándirectamente relacionados con las variables funcionales y disfuncionales deldesarrollo. El control negativo aparece relacionado con la victimización. Asu vez, las variables funcionales están directamente relacionadas tanto conla victimización como con el apego, mientras que las variables disfuncionalessolo alcanzan una correlación significativa con la victimización. Finalmentese discuten los resultados y sus posibles implicaciones; This study has the aim to analyze the different role of parental styles (affect and communication versus control), of functional developmental variables (empathy and adaptative coping styles) and dysfunctional variables (emotional instability and inefficient coping styles) in school victimization, or conversely with peer attachment. Participants were 418 Spanish adolescents, 224 girls and 194 boys, aged between 13 - 14 years old and attending year 7 and year 8 of secondary school. Structural equation modeling was carried out using the EQS program. Results shows that parenting styles of affect and communication versus negative control are both directly related to functional and dysfunctional developmental variables. Negative control is also directly related to the school victimization. Also, functional variables are directly related to the school victimization and peer attachment, while dysfunctional variables only are related to school victimization. Finally, results and their possible implications are discussed.

Modelos de productividad para procesadores forestales en el noreste argentino

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Modelos de productividad para procesadores forestales en el noreste argentino; Forestry processors productivity models in northeastern Argentina Hildt, Eduardo; Mac Donagh, Patricio Miguel O presente estudo analisou a performance de três processadores florestais operando em plantações de Pinus taeda no nordeste da Argentina e foi desenvolvido um modelo geral para determinar as características dos equipamentos e combinações de produtos processados que afetam a produtividade e os custos operacionais. Foram avaliados por meio de um estudo de tempos e movimentos, um processador florestal John Deere 2154 D equipado com cabeça Waratah HTH 622B, um processador florestal Caterpillar 320D FM equipado com cabeça Log Max 7000b e uma escavadora John Deere 200D LC equipada com cabeça Log Max 7000c. Os equipamentos operaram realizando corte raso em florestas de 13 anos, com volumes médios variando entre 0,42 e 0,57 m3. Foi analisada a potencia dos equipamentos e o desenvolvimento de combinações de productos: toras trituráveis e toras trituráveis e serráveis. Foi ajustado um modelo de misto de efeitos fixos alcançando um coeficiente de R2 de 0,7. O delineamento florestal afetou positivamente a produtividade efetiva implicando também um aumento no custo de produção. A potência apresentou uma interação com o volume das árvores, afetando a produtividade para volumes a 0,5 m3. O desenvolvimento de varios productos afetou negativamente a produtividade.; This study analyzed the performance of three forest processors working in Pinus taeda clear-cutting of plantations in the Northeast of Argentina and development a general model for determining how the characteristics of machines and the products sorting affected the productivity and cost of the operation. We evaluated, by a time and motion study, a John Deere 2154 D forestry processor equipped with a head Waratah HTH 622B, a Caterpillar 320D FM forestry processor equipped with a head Log Max 7000B and a John Deere 200D LC excavator hybrid processor equipped with a head Log Max 7000C. The machines clearcut a forest plantation of 13 years, with average volumes between 0.42 and 0.57 m3. Analyzed were the influence of the power of the equipment and the development of two product combinations: pulpwood, and pulpwood and saw timber. The general predictive model resulted in a coefficient of determination (R2) of 0.7. The forest design positively affected the productivity, also involving an increase in the cost of production. The power provided an interaction with the volume of trees, affecting productivity for larger volumes to 0.5 m3. The development of various products negatively affected productivity.

Movilidad y accesibilidad en el Gran Resistencia: principales problemas y desafíos

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Movilidad y accesibilidad en el Gran Resistencia: principales problemas y desafíos Alcalá, Laura Inés; Scornik, Marina En los últimos 30 años, el Gran Resistencia se ha consolidado como un área metropolitana íntimamente relacionada con la ciudad de Corrientes, cambiando su escala territorial y la intensidad de las funciones. La movilidad es uno de los indicadores donde se expresa con mayor notoriedad la relación interfuncional que existe entre los municipios que la integran. Al incremento de la movilidad obligada, se suma el problema de la existencia de condiciones desiguales de conectividad y accesibilidad, la presencia de barreras arquitectónicas, la carencia en determinados casos de alternativas de transporte público y el elevado costo general de éste. Estas condiciones, sumadas a la vulnerabilidad económica de una amplia franja de la sociedad, ha propiciado el uso masivo de la motocicleta, agravando los conflictos del tránsito e incrementando los índices de siniestralidad. A pesar de lo expuesto, el Gran Resistencia ofrece condiciones infraestructurales altamente favorables para la reversión de estos problemas como los anchos de calles y avenidas, la regularidad de la macromalla constituida por las avenidas que configuran los bordes de chacra, etc., condiciones topográficas y una escala aún controlada para potenciar el uso masivo del transporte público y el uso de la bicicleta como medio de movilidad alternativo

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