Hábitos de consumo: el caso de la Feria de Productores de la Universidad Nacional de La Matanza; Consumption habits: the case of the Producers' Fair of the National University of La Matanza Jäger, Mariano; Feito, Maria Carolina; Pelizzari, Cecilia; Mateu, Silvana; Battista, Susana; Solari, Camila El Instituto de Medio Ambiente de la Universidad Nacional de la Matanza organiza, con el apoyo del Instituto Nacional de Tecnología Agropecuaria, desde el año 2015 ferias de agricultura familiar en su campus. Los objetivos de la Feria cuyo lema es “Del Productor al Consumidor”, que en cada evento cuenta con unos 40 feriantes, son sensibilizar a la comunidad educativa y a la población local en relación con la agricultura familiar y a la Economía Social y Solidaria y dar a conocer formas de producción más amigables con el ambiente dentro de un modelo de producción socialmente inclusivo. El artículo enmarca la feria en la realidad nacional en relación con la seguridad alimentaria y resume los resultados de dos tomas de opinión que se han realizado a los consumidores para relevar sus hábitos de consumo y expectativas de alimentos adquiridos en una feria de agricultura familiar.; the environment institute of the national university of la Matanza organizes, with the support from the national institute of agrarian technology and since 2015, family agriculture fairs on its campus. the aims of the fair, whose slogan is "From the producer to the consumer" and which counts with some forty participants in each event, are raising awareness in the educational community and the local population about family agriculture and social, solidary economy and publi cizing the most environment-friendly ways of production within a socially inclusive production model. the article frames the fair within the national reality in regards to food safety and it summarizes the results of two opinion surveys from consumers carried out to gather information about their consumption habits and their expectations about food acquired at a family agriculture fair.food acquired at a family agriculture fair.

The clinical features of patients with chronic hepatitis C virus infections are associated with killer cell immunoglobulin-like receptor genes and their expression on the surface of natural killer cells Podhorzer, Ariel; Dirchwolf, Melisa; Machicote, Andrés Pablo; Belen, Santiago; Montal, Silvina; Paz, Silvia; Fainboim, Hugo; Podestá, Luis G.; Fainboim, Leonardo Killer cell immunoglobulin-like receptor (KIR) genes are known to play a role in the acute phase of hepatitis C virus (HCV) infection. The present study investigated their roles in chronic HCV (CHCV) infection by analyzing the phenotypes and function of natural killer (NK) and T cells that express KIRs. T cells from CHCV patients showed a more differentiated phenotype, and NK cells exhibited an activated profile. These observations are consistent with the increased expression of the degranulation marker CD107a observed after PMA stimulation. We explored the correlations between the expression of KIR genes and lectin type-C receptors with clinical factors that predict progression to fibrosis and cirrhosis. The expression levels of KIR2DS3 and the functional alleles of KIR2DS4-FL were increased in patients with intermediate and high viral loads. Homozygous KIR2DS4 was also associated with the presence of cirrhosis. In the group of individuals with a shorter infection time who developed cirrhosis, we detected decreased expression of KIR3DL1 in CD56dim NK cells in the presence of its ligand. Similarly, in the group of patients with late CHCV infections complicated with cirrhosis, we detected lower expression of the strong inhibitory receptor NKG2A in CD56bright NK cells. We also detected an increase in NKG2C expression in CD56dim NK cells in CHCV patients who displayed high necroinflammatory activity. Decreased KIR3DL2 expression in CD56dim and CD56bright NK cells was associated with a high body mass index, and KIR3DL2 expression may be one factor associated with the more rapid progression of CHCV to fibrosis in patients.

A horse-cloth for Uganda, or how an account by a transhumant veterinary connects histories, animal diseases and continents Podgorny, Irina The picture of a ‘pony in pajamas’ is used to construct the backstory of a deadly animal disease in three parts. First, by focusing on the figure of the ‘author’ of the cloth depicted in the picture, Scottish veterinarian Robert John Stordy, one can examine the repercussions of transhumant biographical itineraries. Second, a focus on regional epizootics helps alter scales defining the local versus the global. Third, the global circulation of mules and the medicines used to cure them illustrate displacement of objects and knowledge that shaped the understanding of sickness and its remedies. Thus, the remedies and horse-clothes used in Uganda not only speak of things and beings that linked distant geographies and contexts, they also mark the multiple hubs where these connections did occur, propelled in part by commercial interests, biographical itineraries and, of course, randomness.

A new high-altitude species of centipede from the Andes of Ecuador (Chilopoda, Geophilomorpha, Schendylidae) Pereira, Luis Alberto Pectiniunguis aequatorialis sp. nov. (Chilopoda: Geophilomorpha: Schendylidae) is described and illustrated on the basis of specimens collected in the Cayambe-Coca Ecological Reserve in the High Andes of Ecuador. The new species is characterized by having ventral pore-fields on the anterior region of the trunk only, a trait that is shared by a single Neotropical congener: Pectiniunguis ascendens Pereira, Minelli & Barbieri, 1994 to which it is similar and is compared taxonomically. This is only the second report of a species of the genus Pectiniunguis Bollman, 1889 from mainland Ecuador. The other taxon is Pectiniunguis roigi Pereira, Foddai & Minelli, 2001, so far only known from the type locality, Limoncocha (Sucumbíos Province), and herein reported for the first time from Parque Nacional Sumaco Napo-Galeras (Napo Province).

Nanomotion Detection Method for Testing Antibiotic Resistance and Susceptibility of Slow-Growing Bacteria Villalba, María Inés; Stupar, Petar; Chomicki, Wojciech; Bertacchi, Massimiliano; Dietler, Giovanni; Arnal, Laura; Vela, Maria Elena; Yantorno, Osvaldo Miguel; Kasas, Sandor Infectious diseases are caused by pathogenic microorganisms and are often severe. Time to fully characterize an infectious agent after sampling and to find the right antibiotic and dose are important factors in the overall success of a patient's treatment. Previous results suggest that a nanomotion detection method could be a convenient tool for reducing antibiotic sensitivity characterization time to several hours. Here, the application of the method for slow-growing bacteria is demonstrated, taking Bordetella pertussis strains as a model. A low-cost nanomotion device is able to characterize B. pertussis sensitivity against specific antibiotics within several hours, instead of days, as it is still the case with conventional growth-based techniques. It can discriminate between resistant and susceptible B. pertussis strains, based on the changes of the sensor's signal before and after the antibiotic addition. Furthermore, minimum inhibitory and bactericidal concentrations of clinically applied antibiotics are compared using both techniques and the suggested similarity is discussed.

Self-replacement after small-scale partial crown dieback in austral Nothofagus dombeyi forests affected by an extreme drought Suarez, Maria Laura; Lloret Sarmiento, Francisco Jose The spectrum of structural response in drought-induced mortality (degree of partial crown mortality) could play a key role in pervasive changes in plant composition, as individual openings could reset self-replacement dynamics or trigger shifts in vegetation. Here we capture the community pattern 17 years after a drought episode over a range of canopy responses in Nothofagus dombeyi forests. We applied a widespread demographic approach to address evidence of species shifts vs. self-replacement and to relate partial dieback to understory structure and composition. Assuming that the outcome of growth release of the understory components can be observed 17 years after canopy loss, this study reveals evidence of self-replacement in N. dombeyi forests heavily affected by drought. Alternatively, when the co-dominant species A. chilensis is widely present in the understory and large gaps are opened, a compositional shift may be possible, with a potential change in forest functionality. Individual partial openings do not favor more shrubby communities or a shift toward a new community. Thus, partial crown dieback contributes to self-replacement mechanisms by hampering strong growth release in understory shrubs, as evident in plots with high mortality, and by facilitating the growth of dominant tree species.

The interactional ventriloquization of written records in the service of authority Van De Mieroop, Dorien; Carranza, Isolda Esmeralda In this article, we analyze three cases in which subordinates’ oral claims are refuted by superiors who draw on written documents of which the subordinates are the (in)direct authors. In this ventriloquization process (Cooren, 2012), the superiors construct these written documents as facts, which have institutionalized the evidential status of the claims. In particular, we use courtroom data and data from performance appraisal interviews in a medical organization. This comparison revealed that the latter allowed for a more flexible handling of written documents, while the former displayed a much more rigid structure in which the ‘incorporation’ of written records immediately entailed a number of interactionally non-negotiable implications. Overall, it became clear that by drawing on the different ontological status of written records, superiors subject subordinate participants to their authority, as such constituting the organization in the name of which they are acting and which reflexively entitles them to act in this way.

Humoral immune response of pregnant goats to two Corynebacterium pseudotuberculosis bacterin formulations Auad, Jordana; Cerutti, Julieta; Cooper, Laura Gabriela; Camussone, Cecilia María; Lozano, Natalia A.; Crespo, Francisco M.; Lozano, Alejandro Caseous lymphadenitis is a chronic suppurative bacterial disease caused by Corynebacterium pseudotuberculosis with a high prevalence in small ruminants. Different vaccine preparations have been employed to control this disease. The adjuvant used in the formulation is a critical factor for the improvement of vaccine efficacy. No commercial vaccines are available in Argentina. The aims of the present work were to compare the specific antibody response against a C. pseudotuberculosis whole cell vaccine formulated with a classical and an immunoestimulant adjuvant in pregnant goats, and to assess the transfer of vaccine- specific antibodies from the goat to the offspring through colostrum. Twenty three pregnant goats were vaccinated. The animals were randomly allocated to three groups: control, aluminum hydroxide Al(OH)3 adjuvant and a new cage-like particle adjuvant (ISPA). Antibodies (IgG) against this antigen were measured by ELISA. A robust humoral immune response was detected in vaccinated animals, with production of specific IgG, without finding significant differences between the vaccines formulated with different adjuvants. High levels of specific antibodies were detected in colostrum samples from both immunized groups, which were passively transfered from goats to offprings. No adverse local reactions in the vaccines injection sites were detected.

Phenolic composition, antioxidant and enzyme inhibitory activities of Cucurbitaceae fruits Ramirez, Maria Rosana; Oyhenart, Jorge Fruits have been known as great source of bioactive natural compounds with potential biological effects. The objective of this work was to perform digestive enzyme inhibition assays with methanolic extracts of six fruits from the family Cucurbitaceas. The extracts were also analyzed for antioxidant capacity (DPPH·), qualitative and quantitative composition of chemical compounds and nutrients. The fruit extracts showed similar antioxidant activities and had substantially different total polyphenolic contents. In addition, the six fruit extracts examined, at a concentration of 100 μg/mL, significantly inhibited β glucosidase and lipase activity, in vitro. These results may be related to the profile of polyphenolic compounds. In conclusion, it can be said that cucurbits fruits are a valuable horticultural product, based on their rich and beneficial chemical composition.

Detection and isolation of faults on the rotor side converter of doubly fed induction generators; Diagnóstico de fallas en el convertidor del rotor en generadores de inducción con rotor bobinado González, Guillermo Noel; de Angelo, Cristian Hernan; Forchetti, Daniel Gustavo; Aligia, Diego Andrés This article presents a fault diagnosis strategy for open switch faults in the rotor side converter of doubly fed induction generators. The proposed strategy uses state observers based on dynamic models obtained from an approach based on differential geometry. These observers allow the generation of residue signals that are sensitive to each fault and insensitive to disturbances. From these signals a residual vector is constructed with information that can be used for the detection and isolation of the fault. The detection strategy consists of evaluating the envelope of the module of the residual vector. Isolation requires evaluating the region of the plane described by the residual vector and comparing that region with the one associated with each fault scenario. Finally, results are presented where it is demonstrated that the proposal allows to detect, isolate and identify open switch faults, both single and multiple, even against parametric errors and other disturbances.

Rodent Abundance and Hantavirus Infection in Protected Area, East-Central Argentina Maroli, Malena; Vadell, María Victoria; Padula, Paula Julieta; Gomez Villafañe, Isabel Elisa We captured 3 hantavirus rodent hosts in Otamendi Natural Reserve, Argentina, during 2007–2012. Hantavirus antibodies were found only in Akodon azarae grass mice, mainly in males and old animals. Higher abundance of this species was associated with warm and rainy weather and high water levels, which peaked after a strong El Niño event.

First report of Colletotrichum siamense causing apple bitter rot in central Argentina Fernandez, Laura Noemí; Alaniz, Sandra; Mondino, Pedro; Roeschlin, Roxana Andrea; Maumary, Roxana Lorena; Gariglio, Norberto Francisco; Favaro, María Alejandra The introduction of low-chill apple cultivars in Argentina allowed the expansion of production into warmer northern and central areas. Bitter rot, caused by Colletotrichum species, is one of the prevalent apple diseases worldwide (Baroncelli et al. 2014, Munir et al. 2016, Velho et al. 2015). In December 2014, bitter rot symptoms were observed on apple fruits cvs. ?Eva?, ?Caricia? and ?Princesa? in four orchards of Santa Fe province. The rot began as brown, 1-2 mm circular spots which enlarged rapidly and became sunken and extended toward the fruit core in a V-shaped pattern. Under high humidity conditions concentric rings of pinhead-size salmon acervuli formed in the lesions. Causal agent was isolated by touching acervuli with a sterile needle and monosporic cultures were obtained on PDA after 7 days at 25°C, with a 12-h light period. Colonies were white to gray on the top and pink on the underside, where concentric rings of salmon acervuli were clearly distinguished. The width and length of one hundred conidia were examined in three isolates (E3, E8 and E9), ranging from 3.37 to 5.54 μm (avg. 4.46), and from 11 to 17.85 μm (avg. 14.58), respectively. Conidia were mainly cylindrical, with rounded ends. After germination, conidia formed oval appressoria ranging from 9.17 to 10.31 μm (avg. 9.65), and from 6.88 to 7.81 μm (avg. 7.39). These morphological characteristics correspond to species belonging to C. gloesporioides complex (Weir et al. 2012). To accurately identify the species, DNA was extracted from isolates and genes corresponding to glyceraldehyde-3-phosphate dehydrogenase (GAPDH), ß-tubulin (TUB2) and calmodulin (CAL) were partially amplified and sequenced. CAL and GAPDH sequences presented a 100% of identity with species of Colletotrichum siamense, whereas TUB2 sequences showed between 99 and 100 % of identity with the same species. The nucleotides sequences were deposited in GenBank (KY656675-KY656677, GAPDH; KY656678-KY656680, TUB2; and MF476801-MF476803, CAL). Multilocus phylogenetic analyses performed with references sequences (Weir et al. 2012) showed that the three isolates clustered with C. siamense, in accordance with BLAST results. To confirm pathogenicity, each isolate was inoculated in eight fruits of the cultivar from which it was originally obtained. Two drops of 10 μl of conidial suspension (1x105 conidia per ml) were deposited in wounded and non-wounded areas on fruits previously disinfested with 1% sodium hypochlorite solution for 1 min and rinsed twice with sterile distilled water. Drops of sterile water were deposited in eight fruits as control. Pathogenicity tests were repeated twice. Fruits were kept under high humidity conditions at 25°C for ten days. First symptoms appeared 3 days after inoculation (DAI) in wounded areas and 5 DAI in non-wounded areas. After that, all of the isolates produced symptoms identical to those previously described, whereas the controls remain symptomless. The pathogen was re-isolated from lesions, and identified as C. siamense by morphological characteristics and based on the CAL sequences, as previously described. To our knowledge, this is the first report of C. siamense in Argentina causing bitter rot on apple. C. siamense was previously reported to be more aggressive than other Colletotrichum species, but it is also more sensitive to fungicides (Munir et al. 2016), which encourages the development of species-specific management strategies for this pathogen in central Argentina.

Calidad visual en el rango de adaptación mesópico Sánchez, Roberto Francisco El nivel de iluminación de una escena visual afecta a diferentes aspectos del sistema visual humano. Por una parte, contribuye a la adaptación de los conos y bastones, pero además modula la respuesta de la pupila, lo cual determina en cierta medida la calidad óptica del ojo. En particular, la reducción de la luminancia trae aparejada un aumento en el tamaño pupilar, produciéndose una disminución de la calidad óptica. Parte de este deterioro es debido a un incremento de las aberraciones del ojo y parte se debe a la difusión intraocular. Para comprender mejor este proceso, en este trabajo se ha realizado un estudio de la calidad óptica del ojo humano en función de la luminancia de adaptación. Un primer objetivo ha sido estudiar la difusión intraocular en base a la zona periférica de la imagen retiniana, en un modelo de ojo ideal. Para ello, se ha diseñado y construido un sistema experimental de doble-paso, basado en el registro de imágenes de una fuente puntual generada con un láser de 780 nm, después de la reflexión en la retina y el doble paso de la luz a través de los medios oculares. De este estudio se ha derivado un método que permite determinar la transmitancia directa de los medios del ojo artificial. Además, se analizó la posibilidad de implementar el método en el ojo humano, mediante medidas en una muestra de sujetos jóvenes normales, obteniendo un parámetro que correlaciona con la transmisión de los medios oculares. Además, se ha determinado la calidad de la imagen ocular en una muestra de población normal en términos de la función de transferencia de modulación (MTF) y de diferentes parámetros de calidad óptica calculados a partir de la medida simultanea de la imagen de doble-paso (frecuencia de corte de la MTF, relación de Strehl, FWHM, y los índices de difusión OSI y AFSI) y de la aberración del frente de onda (RMS). Para este segundo objetivo se ha desarrollado un sensor de frente de onda de Shack-Hartmann. Los parámetros se han medido para distintos tamaños pupilares y luminancias de adaptación conteniendo valores en el rango mesópico en sujetos voluntarios. Se determinó la MTF media para cada nivel de iluminación y cada tamaño de pupila, y se calcularon las aberraciones de hasta el quinto orden. Todos los parámetros de calidad óptica experimentan una sistemática disminución a medida que se reducía la luminancia o aumentaba el tamaño de la pupila. Estos resultados sugieren que es posible simular las condiciones de calidad óptica de una determinada escena visual controlando el tamaño de la pupila. Finalmente, se encontró que el índice de difusión OSI aumenta mientras que el parámetro AFSI se mantiene constante con la cantidad de aberraciones (RMS). Esta independencia de AFSI con las aberraciones permite valorarlo como en una métrica más robusta para describir la difusión en un ojo sano.; The level of illumination of a visual scene affects different aspects of the human visual system. On the one hand, it contributes to the adaptation of the cones and rods but also modulates the response of the pupil, which determines to a certain extent the optical quality of the eye. In particular, the reduction of the luminance brings about an increase in the pupillary size, producing a decrease in the optical quality. Part of this deterioration is due to an increase in the aberrations of the eye and part is due to intraocular scattering. To better understand this process, in this work a study of the optical quality of the human eye as a function of the adaptation luminance has been carried out. A first objective has been to study intraocular scattering based on the peripheral zone of the retinal image, in an ideal eye model. An experimental double-pass system has been designed and built, based on the recording of images from a point source generated with a 780 nm laser, after reflection in the retina and the double pass of light through the ocular media. From this study, a method has been derived that allows determining the direct transmittance of the artificial eye media. In addition, we analyzed the possibility of implementing the method in the human eye, by measuring a sample of normal young subjects, obtaining a parameter that correlates with the transmission of the ocular media. In addition, the quality of the ocular image in a normal population sample has been determined in terms of the modulation transfer function (MTF) and of different optical quality parameters computed from the simultaneous measurement of the double-pass image (cutting frequency of the MTF, Strehl ratio, FWHM, and diffusion indexes OSI and AFSI) and wavefront aberration (RMS). For this second objective, a Shack-Hartmann wavefront sensor has been developed. The parameters were measured for different pupillary sizes and adaptation luminances containing values in the mesopic range in volunteer subjects. The mean MTF was determined for each level of illumination and each pupil size, and aberrations of up to the fifth order were calculated. All the parameters of optical quality undergo a systematic decrease as the luminance was reduced or the pupil size increased. These results suggest that it is possible to simulate the optical quality conditions of a certain visual scene by controlling the size of the pupil. Finally, it was found that the OSI scattering index increases while the AFSI parameter remains constant with the number of aberrations (RMS). This independence of AFSI with aberrations makes it possible to evaluate it as in a more robust metric to describe scattering in a healthy eye.

A CFD study with analytical and experimental validation of laminar and turbulent mass-transfer in electrochemical reactors Colli, Alejandro Nicolás; Bisang, Jose Maria This work presents numerical simulations, with validation considering analytical expressions and experimental results, of masstransfer in electrochemical reactors under laminar and turbulent flows in ducts of rectangular and tubular shape. Sudden expansion at the reactor inlet and segmented electrodes are also analyzed. Computational fluid dynamics (CFD) simulations were performed solving the laminar or RANS equations with the Shear Stress Transport (SST) k-ω turbulence model using the open source code OpenFOAMin steady-state. For mass-transfer simulations, the averaged diffusion-convection equation was implemented and solved. A good agreement between mass-transfer simulations with experimental data and analytical results were attained for both laminar and turbulent flow. Discussions about the segmented electrode technique in order to obtain local mass-transfer data in laminar and turbulent flow are also performed.

Ticks infesting cattle and humans in the Yungas Biogeographic Province of Argentina, with notes on the presence of tick-borne bacteria Saracho Bottero, María Noelia; Tarragona, Evelina Luisa; Sebastian, Patrick Stephan; Venzal, José M.; Mangold, Atilio Jose; Guglielmone, Alberto Alejandro; Nava, Santiago This study was performed to determine the tick species that infest cattle and humans throughout an altitudinal gradient in the Yungas Biogeographic Province of Argentina. The presence of tick-borne bacteria of the genera Rickettsia, Ehrlichia and Borrelia in the collected ticks was also evaluated. Samples of ticks parasitizing cattle and humans were carried out in different seasons. Questing ticks (adults and nymphs) were collected from vegetation and analyzed to detect the presence of Rickettsia, Ehrlichia and Borrelia by a battery of different PCRs. Five species of hard ticks were found parasitizing cattle: Amblyomma sculptum, Amblyomma tonelliae, Amblyomma hadanii, Haemaphysalis juxtakochi and Ixodes pararicinus. Amblyomma sculptum (immature and adults), A. tonelliae (immature and adults), A. hadanii (larvae) and one nymph of I. pararicinus were found attached to humans. Rickettsia amblyommatis was detected in one nymph of A. hadanii. DNA of a Borrelia genospecies belonging to the B. burgdorferi s.l. complex (phylogenetically related to haplotypes previously reported in Ixodes aragaoi from Uruguay and I. pararicinus from Argentina) was detected in adults of I. pararicinus. Amblyomma sculptum and I. pararicinus appear to be the tick species more frequent on cattle in the YBP from Argentina, and A. sculptum and A. tonelliae, were the main ticks found attached to humans. The medical importance of the bacteria of the genus Rickettsia and Borrelia detected in this work remains unknown.

Alteraciones de los bosques nativos en el norte argentino: normativas y mecanismos de compensación por servicios ambientales; Alterations of Native Forests in Northern Argentine: Regulations and Compensation Mechanisms for Environmental Services Luna, Claudia Verónica Los recursos naturales conforman los insumos de cualquier actividad económica desarrollada por el hombre; pero es una realidad que la mayoría de los ecosistemas forestales nativos de Argentina presentan desde serias alteraciones con su consecuente pérdida de biodiversidad; no hay mejor estrategia de política ambiental que aquélla que concurra simultáneamente a resolver los problemas ambientales y los socio-económicos con la insustituible acción del Estado. El objetivo de este trabajo es analizar la situación de los bosques del norte argentino luego de la ley de presupuestos mínimos para la protección ambiental de los mismos; para conocer en profundidad los procesos asociados a su alteración, las normativas vigentes para su protección y uso sustentable, como así también los mecanismos de compensación por servicios ambientales que surgen a partir de ellos.; Natural resources form the inputs of any economic activity carried out by human beings; but it is a reality that most native forest ecosystems in Argentina present from serious alterations with consequent loss of biodiversity. Therefore, there is no better strategy for environmental policy than that which contributes simultaneously to solve environmental and socioeconomic problems with the irreplaceable State action. The objective of this work is to analyze the situation of the forests of northern Argentina after the law the implementation of minimum budgets for their environmental protection, to know in depth the processes associated with its alteration; current regulations for protection and sustainable use; as well as the compensation mechanisms for environmental services arising from them.

Variedades y variaciones de capitalismo en la periferia. América Latina y el Este Asiático reconsiderados Fernández, Víctor Ramiro; Bazza, Alcides; Seiler, Cristhian Rubén El artículo propone un marco analítico alternativo al enfoque institucional de Variedades de Capitalismo para comprender la divergente emergencia y dinamismo industrial entre el Este Asiático y América Latina al interior del denominado Sur Global. El carácter alternativo se fundamenta en el distanciamiento del tratamiento nacionalista metodológico y focalizado en las complementariedades institucionales identificadas en países desarrollados -propio de este enfoque-, para considerar las características que identifican a países en contextos periféricos, y los cambios temporales y espaciales al interior de estos. Se introduce las nociones de ?núcleo de acumulación? y ?núcleo de implicación estatal? como herramentales teóricos alternativos que consideran tal condición periférica -y sus cambios-, entendiendo a los procesos de acumulación y a los Estados que conforman las macro-regiones analizadas en una relación dialéctica e inter-penetrante con permisividades externas y viabilidades internas.

Tube-based MPC with Nonlinear Control for Load Transportation using a UAV Santos, Marcelo A.; Ferramosca, Antonio; Raffo, Guilherme V. This paper presents a two-stage cascade control framework to solve hierarchically the trajectory tracking problem of a Tilt-rotor Unmanned Aerial Vehicle (UAV) carrying a suspended load. Initially, a nonlinear dynamic model is presented, which is after decoupled into two subsystems. The outer control system is designed by means of a robust tube-based Model Predictive Control (MPC) strategy, which is used to control the UAV´s planar motion and stabilize the suspended load. For the inner control system, the input-output feedback linearization (IOFL) technique combined with the dynamic extension approach and a discrete mixed H2/H∞ controller is considered to control the UAV´s altitude and attitude. Simulations results are carried out to corroborate the proposed control strategy.

Aquel lejano Oeste: paradojas de la (in)movilidad en la ciudad de Santa Fe Szupiany, Estefanía Belén El crecimiento desigual y fragmentado del borde Oeste de la ciudad de Santa Fe puede ser analizado en función de la movilidad e inmovilidad allí experimentada. Una paradoja materializada en el trazado de la Avenida Circunvalación en tanto espacio destinado a las altas velocidades y, al mismo tiempo, en tanto formalización de un límite y barrera al intercambio socio-espacial. Con el objetivo de revisar los fundamentos epistemológicos de las políticas urbanas (que derivaron en omisiones y resoluciones tecnocráticas), este artículo propone recuperar la historicidad del proceso de ideación y planificación, a través de los diferentes documentos y planes urbanísticos confeccionados para la ciudad, enfocando el análisis en los modos en que fue concebido el margen Oeste en relación al Río Salado.

Las concepciones políticas de la reforma constitucional de 1949: las visiones del peronismo y la Unión Cívica Radical; The political conceptions of the constitutional reform of 1949: the visions of Peronism and the Unión Cívica Radical; As concepções políticas da reforma constitucional de 1949: Visões do peronismo e da Unión Cívica Radical Ajmechet, Sabrina Artículo enviado con pedido de publicación diciembre 2016. La constitución de 1949, sancionada durante el primer gobierno de Juan Domingo Perón, mantuvo los principios de gobierno representativo: no introdujo un régimen corporativistas de representación ni modificó la división tripartita de poderes. Sin embargo, sentó las bases dogmáticas y se ocupó del articulado institucional de un tipo de gobierno diferente al imaginado en 1853. Bajo la premisa de que era necesario superar las deficiencias del régimen representativo-liberal, el peronismo propuso un diseño constitucional fundado en una visión integrista y organicista de la política. Esta redefinición produjo modificaciones sustanciales tanto en la idea de representación como en la definición misma de democracia. A partir del análisis de las posiciones de los peronistas y de los radicales en la reforma constituyente se analizarán cuestiones fundamentales de lo político: ¿Cómo imaginaron peronistas y radicales la representación política? ¿De qué forma definieron a la democracia? ¿Cómo creían que se debía gobernar?; The 1949 constitution, approved under Juan Domingo Perón’s first presidency, maintained the principles of representative government: it did not introduce corporatist principles of representation or modify the tripartite division of powers. Nevertheless, it laid the dogmatic bases and dealt with the institutional articulation of a type of government different from that imagined in 1853. Under the premise that it was necessary to overcome the deficiencies of the representative-liberal regime, the Peronist goverment proposed a constitutional design based on an organicist visión of politics. This redefinition produced substantial modifications both in the idea of representation and in the very definition of democracy. From the analysis of the positions expresed during the debate of the Constitutional Reform by the Peronists’ and Radicals’ legislators we will analize some basic political conceptions: How did they imagine political representation? How did they define democracy? How did they define the characteristics of a good goverment?; A constituição de 1949, aprovada durante o primeiro governo de Juan Domingo Perón, mantidos os princípios do governo representativo: não introduzido uma representação corporativista ou alterada a divisão tripartida dos poderes. No entanto, ele estabeleceu a base dogmática e um articulado institucional diferente de imaginado em 1853. Sob a premissa de que a reforma era necessária para superar as deficiências do regime liberal representativa, o peronismo proposto um projeto constitucional fundada na visão do governo e política fundamentalistas organísmicos. Esta redefinição produzido mudanças substanciais tanto a ideia de representação como na definição de democracia. A partir da análise das posições dos peronistas e radicais na reforma fundamental constituinte serão discutidas alguns conceitos políticos básicos: Como peronistas e radicais imaginado representação política? Como eles definiram a democracia? Como é que eles acham que era a melhor forma de governo?