1,721,103 research outputs found
Evaluación de variedades de espárrago en San Juan
Get PDFTeniendo en cuenta las ventajas comparativas de San Juan para el cultivo del espárrago y el hecho de que la cultivar más usada actualmente presenta problemas de adaptación climática, la EEA San Juan comenzó a estudiar, presenta problemas de adaptación climática, la EEA San Juan comenzó a estudiar,
hace dos años, el comportamiento de diferentes materiales en la zona. El propósito es contribuir al incremento de la producción y calidad comercial El propósito es contribuir al incremento de la producción y calidad comercial de este cultivo. Aquí se presentan resultados y conclusiones preliminares.EEA San JuanFil: Chiquirrín, Griselda. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria San Juan; ArgentinaFil: Pacheco, Daniela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria San Juan; Argentin
Discourses of pedagogical practices in times of COVID 19: a view from the latin american professoriate
No full textEste estudio comprende los discursos producidos por el cuerpo docente de instituciones educativas en Latinoamérica respecto a las prácticas pedagógicas desarrolladas durante la pandemia de COVID-19, en el periodo 2020 –2022. La investigación se desarrolló bajo un enfoque de metodología cualitativo e implementó una revisión documental tradicional como método de recolección. Para la organización y análisis de la información, se empleó la Teoría Fundamentada desde el enfoque constructivista de Kathy Charmaz, lo que permitió identificar categorías emergentes desde los datos. El proyecto se fundamentó teóricamente desde el Análisis Critico del Discurso propuesto por Teun Van Dijk, lo cual permitió comprender cómo las macro estructuras semánticas se entrelazan para producir relaciones de poder y posicionamientos ideológicos. Los hallazgos, por un lado, aportaron a la comprensión crítica de las prácticas pedagógicas frente a la virtualización forzada, las brechas tecnológicas y los desafíos contextuales, y, por otro lado, evidenciaron cómo los discursos docentes reflejaron tensiones y posturas ideológicas frente a las imposiciones del sistema educativo durante la emergencia sanitaria.Especialista en Psicología Social, Cooperación y Gestión ComunitariaEspecializaciónThis study comprises the discourses produced by the teaching staff of educational institutions in Latin America regarding the pedagogical practices developed during the COVID-19 pandemic, in the period 2020 -2022. The research was developed under a qualitative methodology approach and implemented a traditional documentary review as a collection method. For the organization and analysis of the information, Grounded Theory was used from the constructivist approach of Kathy Charmaz, which allowed the identification of emerging categories from the data. The project was theoretically based on the Critical Discourse Analysis proposed by Teun Van Dijk, which allowed understanding how the macro semantic structures and microstructures of meanings are intertwined to produce power relations and ideological positions. The findings, on the one hand, contributed to the critical understanding of pedagogical practices in the face of forced virtualization, technological gaps and contextual challenges, and on the other hand, evidenced how teachers' discourses reflected tensions and ideological positions in the face of the impositions of the educational system during the health emergency
Evaluation of crop forcing technique in Syrah (Vitis vinifera L.) to increase wine quality
Get PDFPosterIn warm climates, grape varieties reach enough soluble solids content, however color intensity is low to obtein wines of high quality. Crop forcing technique, force the regrowth of the buds in the same season of development and change the fenology of the vines. So the period from veraison to harvest occurred with lower temperatures. The aim of this study was to assess the effect of crop forcing technique on phenology, yield and wine quality of Syrah, trained on a vertical trellys system, in San Juan-ArgentinaEEA San JuanFil: Pacheco, Daniela. Unidad Integrada Instituto Nacional de Tecnología Agropecuaria (INTA) - Universidad Nacional de San Juan (UNSJ); ArgentinaFil: Pacheco, Daniela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria San Juan; Argentina.Fil: Pugliese, María Beatriz. Unidad Integrada Instituto Nacional de Tecnología Agropecuaria (INTA) - Universidad Nacional de San Juan (UNSJ); ArgentinaFil: Pugliese, María Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria San Juan; Argentina.Fil: Guzmán, Yanina. Unidad Integrada Instituto Nacional de Tecnología Agropecuaria (INTA) - Universidad Nacional de San Juan (UNSJ); ArgentinaFil: Giménez, Fernanda. Unidad Integrada Instituto Nacional de Tecnología Agropecuaria (INTA) - Universidad Nacional de San Juan (UNSJ); ArgentinaFil: Battistella, Maximiliano. Unidad Integrada Instituto Nacional de Tecnología Agropecuaria (INTA) - Universidad Nacional de San Juan (UNSJ); ArgentinaFil: Battistella, Maximiliano. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria San Juan; Argentina
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
From tissue engineering to engineering tissues: the role and application of in vitro models
No full textEngineered models have emerged as relevant in vitro tools to foresee the translational potential of new therapies from the bench to the bedside in a fast and cost-effective fashion. The principles applied to the development of tissue-engineered constructs bring the foundation concepts to engineer relevant in vitro models. Engineered models often face scepticism, because regularly these do not include the extreme complexity of nature, but rather a simplification of a phenomenon. While engineering in vitro models, a hypothesis is imposed towards which defined parameters are included to assess the degree of similarity between the in vitro model and the native phenomenon, keeping in mind their intrinsic limitations. The development of in vitro models has been highly supported and disseminated by different regulatory agencies. This review aims at defining and exploring the multifaceted potential of tangible, not theoretical, models within the biomedical field to represent physiological tissues and organ-related phenomena
Characterization of vineyard training systems based on remote sensing and crop indices
No full textIn the context of precision viticulture, this work presents the implementation of remote sensing techniques to analyze the spatial variability of a vineyard (Vitis vinifera L.). This work seeks to continue a preliminary investigation conducted in 2020; this time, the study area within the vineyard was expanded, and the campaigns of 2023 and 2024 were considered. This trial was conducted in a vineyard located in the province of San Juan, Argentina. The vineyard was divided into three blocks (replicates), and within each block, three training systems were randomly implemented: Free Cordon, Minimal Pruning and Box Pruning. The analysis was mainly based on
extracting information from various vineyard maps constructed from high-resolution (2.5 cm pixel size) multispectral and thermographic images. These images were captured using special cameras mounted on an unmanned aerial vehicle (UAV).
Vegetation indices NDVI and NDRE were calculated from the orthomosaics. The spatial distribution of each index and the crop temperature (Tc) were studied, and measurements were subsequently recorded in plants within each training system. Based on these measurements, significant differences were identified among the three training systems. The results demonstrated the usefulness of the high-resolution images acquired to assess the vineyard's condition at the plant level, allowing the producer to manage each training system specifically.EEA San JuanFil: Capraro, Flavio. Universidad Nacional de San Juan. Facultad de Ingeniería. Instituto de Automática; ArgentinaFil: Pacheco, Daniela Elizabeth. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria San Juan; Argentina.Fil: Campillo, Pedro. Universidad Nacional de San Juan. Facultad de Ingeniería. Instituto de Automática; Argentin
Effect of regulated deficit irrigation on vegetative growth, yield, fruit quality and reserves accumulation of Superior seedless = Efecto del riego deficitario controlado en postcosecha sobre el crecimiento vegetativo, rendimiento, calidad de fruto y acumulación de reservas en Superior seedless
No full textSuperior Seedless es un cultivar de uva de mesa producido principalmente en San Juan. Posee un ciclo productivo corto (120 días) y un periodo extenso de cosecha a caída de hojas (90 días), donde consume un 45% del total del agua requerida. El objetivo de este trabajo fue desarrollar una estrategia de riego deficitario controlado (RDC) durante pos cosecha, para reducir el consumo de agua y energía, sin afectar la producción, calidad ni acumulación de reservas para la temporada siguiente. Los tratamientos aplicados entre cosecha y caída de hojas fueron % de reposición de la ETc: control (C): 100%, T1: 50%; y T2: 25%. El potencial hídrico a mediodía de T2 se diferenció del control. Los valores alcanzados durante la aplicación de los tratamientos estuvieron en el rango entre: -0.9 a -1(C), -1 a -1.3 (T1) y -1.1 a -1.5 MPa (T2). Las láminas de agua aplicadas en pos cosecha fueron 775,97 mm (C), 408,06 mm (T1) y 234,31 mm (T2). Las reservas en raíz, tanto de almidón como de nitrógeno total, no se vieron afectadas, en cambio en tronco el almidón fue menor en el tratamiento de mayor estrés, y el nitrógeno acumulado mayor en los tratamientos estresados. En la siguiente temporada, el peso
de poda, porcentaje de brotación, crecimiento de brotes, rendimiento y variables de calidad de fruto no fueron afectados por los tratamientos de riego. Es posible ahorrar agua (hasta un 24%), mediante la aplicación de riego deficitario controlado en pos cosecha (50% ETc), sin afectar el rendimiento, la calidad del fruto ni la acumulación de reservas en Superior Seedless.EEA San JuanFil: Pacheco, Daniela Elizabeth. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria San Juan. Unidad Integradora; ArgentinaFil: Pacheco, Daniela Elizabeth. Universidad Nacional de San Juan (UNSJ). Unidad Integrada; ArgentinaFil: Ahún, Nasif. Universidad Nacional de San Juan (UNSJ). Unidad Integrada; ArgentinaFil: Elizondo, Santiago. Universidad Nacional de San Juan (UNSJ). Unidad Integrada; ArgentinaFil: Olguin Pringles, Alfredo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria San Juan. Unidad Integradora; Argentina.Olguin Pringles, Alfredo. Instituto Nacional de Tecnología Agropecuaria (INTA). Universidad Nacional de San Juan (UNSJ). Unidad Integrada; Argentin
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