677 research outputs found

    Trabajos pasados, trabajos futuros: las formas del trabajo no libre ante el horizonte de la tercerización laboral

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    El siguiente estudio, de carácter colectivo, interdisciplinario y exploratorio, parte de un interrogante surgido en el seno de nuestras funciones como profesionales técnicos del otrora Ministerio de Trabajo, Empleo y Seguridad Social de la Nación: ¿por qué, en un contexto de transformación profunda del paradigma moderno de trabajo (De la Garza, 2007), el Estado argentino ratificó el protocolo 029 de la Organización Internacional del Trabajo, relativo a la erradicación del trabajo forzoso y las formas análogas a la esclavitud moderna? ¿No supondría una “anomalía temporal” acompañar los debates sobre el futuro del trabajo, al mismo tiempo que se asiste a la emergencia de relaciones laborales que evocan y actualizan la figura de la esclavitud? Nuestra participación, en condiciones de organizadores y anfitriones de la IV Conferencia Mundial para la Erradicación Sostenida del Trabajo Infantil y el Trabajo Forzoso que tuvo lugar en la sede central de la Sociedad Rural Argentina, en la ciudad de Buenos Aires, nos permitió dimensionar la importancia que esta problemática había adquirido a escala planetaria. Nos proponemos entonces formular algunos aportes para comprender la utilidad y las limitaciones del paradigma del trabajo no libre y su relación con el avance de la tercerización laboral, a partir de un caso novedoso: el de los rappitenderos.Facultad de Humanidades y Ciencias de la Educación (FAHCE

    Saliva - Blood groups

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    Fil: Ruiz, Ana María. Universidad Nacional de Cuyo. Facultad de OdontologíaFil: Fader, Claudio. Universidad Nacional de Cuyo. Facultad de OdontologíaFil: Biscaro de Massa, Amalia. Universidad Nacional de Cuyo. Facultad de OdontologíaFil: Bravo, Mónica. Universidad Nacional de Cuyo. Facultad de OdontologíaFil: Carminati, Sergio. Universidad Nacional de Cuyo. Facultad de OdontologíaFil: Fernández, María Elizabeth. Universidad Nacional de Cuyo. Facultad de OdontologíaFil: Gil Lorenzo, Andrea. Universidad Nacional de Cuyo. Facultad de Odontologí

    Close detection robotic platform for Search And Rescue missions based on Bluetooth Low Energy

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    Improvements in telecommunications and digitalization directly improve the efficacy of a wide variety of processes. Recently, detection systems have received considerable attention because of the importance of tracking infected people contacts during SARS-CoV-2 pandemic. Such implementations can be useful in the task of finding potential victims in the context of emergency response, especially in situations where GPS is not available or inspection by imaging is not practical. Radio signals come into play, and specifically from devices that transmit periodically and with low power consumption. With the rise of Internet of Things over the last years, the number of wearable devices that support BLE, such as smartbands, smartwatches or smartphones, has been increasing constantly, as well as the number of users that carry them. Those devices can provide considerable assistance in locating injured or unconscious people. This work presents a system for detecting victims by means of a terrestrial search and rescue (SAR) robot. A real implementation of a close detection robotic platform based on BLE for SAR interventions is laid out. To estimate the distance between a robotic agent and potential victims within an experimental area, a Log-distance path loss model is presented. The proposed scheme has been tested in realistic scenarios during SAR exercises.This work was partially funded by the Spanish project RTI2018-093421-B-I00. It has been also performed in the framework of the Horizon 2020 project LOCUS (ICT-871249) receiving funds from the European Union. This work has been also partially funded by Junta de Andalucía and ERDF projects: Consejería de Transformación Económica, Industria, Conocimiento y Universidades, Proyecto de Excelencia PENTA, P18-FR-4647; postdoctoral grant (Ref., DOC 01154, “selección de personal investigador doctor convocado mediante Resolución de 21 de mayo de 2020”, PAIDI 2020) and the I Plan Propio de Investigación, Transferencia y Divulgación Científica of the University of Málaga. The authors want to thank the collaboration of the Chair for Safety, Emergencies and Disasters of the University of Malaga, led by Prof. Jesús Miranda, as well as Javier Serón Barba for his support during the experiments. Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

    Sistema de detección cercana para misiones SAR basado en BLE y sistemas robóticos

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    Detection systems have recently received considerable attention because of the importance of tracking infected people during SARS-CoV-2 pandemic. Such implementations can be very useful for finding potential victims in the context of emergency response, especially in situations where GPS is not available for inspection by imaging is not practical. Radio signals come into play, and specifically from devices that transmit periodically and with low power consumption. With the rise of Internet of Things and the plethora of wearable devices used in everyday life, like a smartphone, Bluetooth Low Energy (BLE) can provide considerable assistance in locating lost people. This work presents a system for detecting victims in a non-structured environment, by means of a search and rescue (SAR) robot. A real implementation of a close detection robotic platform based on BLE for SAR interventions is laid out. In order to estimate the distance between a robotic agent and potential victims within an experimental area, a Log-distance path loss model is presented, which has been tuned to detect beacons with reasonable accuracy within a range of 25 meters in rugged environments. The proposed scheme has been tested in realistic scenarios during SAR exercises.Los autores quieren agradecer la colaboración de la Cátedra de Seguridad, Emergencias y Catástrofes de la Universidad de Málaga, dirigida por el profesor Jesús Miranda, así como a Javier Serón Barba por su apoyo durante los experimentos. Este trabajo ha sido parcialmente subvencionado por el proyecto RTI2018-093421-B-I00. Se ha realizado en el cuadro del proyecto Horizonte 2020 proyecto LOCUS (ICT-871249) recibiendo fondos de la UE. Este trabajo también ha sido parcialmente subvencionado por la Junta de Andalucía y el ERDF (Consejería de Transformación Económica, Industria, Conocimiento y Universidades, Proyecto de Excelencia PENTA, P18-FR-4647). Este trabajo ha sido parcialmente financiado por la Junta de Andalucía y el ERDF en el marco del proyecto 5G-SCARF - 5G Smart Communications for the AiRport of the Future (Ref. UMA-CEIATECH-17, “Proyecto singular de actuaciones de transferencia del conocimiento Campus Excelencia Internacional Andalucía TECH. Ecosistema innovador con inteligencia artificial para Andalucía 2025”). Finalmente, al I Plan Propio de Investigación y Transferencia de Universidad de Málaga. Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

    Dating historical droughts from religious ceremonies, the international pro pluvia rogation database

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    Climate proxy data are required for improved understanding of climate variability and change in the pre-instrumental period. We present the first international initiative to compile and share information on pro pluvia rogation ceremonies, which is a well-studied proxy of agricultural drought. Currently, the database has more than 3500 dates of celebration of rogation ceremonies, providing information for 153 locations across 11 countries spanning the period from 1333 to 1949. This product provides data for better understanding of the pre-instrumental drought variability, validating natural proxies and model simulations, and multi-proxy rainfall reconstructions, amongst other climatic exercises. The database is freely available and can be easily accessed and visualized via http://inpro.unizar.es/.info:eu-repo/semantics/publishedVersio

    LTP Allergy Follow-Up Study: Development of Allergy to New Plant Foods 10 Years Later

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    Introduction: Allergy to nonspecific lipid transfer protein (nsLTP) is the main cause of plant-food allergy in Spain. nsLTPs are widely distributed in the plant kingdom and have high cross-reactivity but extremely variable clinical expression. Little is known about the natural evolution of this allergy, which complicates management. The objective of this study was to assess the development of allergy to new plant foods in nsLTP-sensitized patients 10 years after diagnosis. Methods: One hundred fifty-one patients showing specific IgE to nsLTP determined by ISAC (Thermofisher) were included. After clinical workup (i.e., anamnesis, skin test, and challenge when needed), these patients were divided into two groups: 113 patients allergic to one or more plant food (74.5%) and 38 patients not allergic to any plant food (25.1%). Ten years later, a telephone interview was conducted to check whether patients had developed additional allergic reactions to plant foods. Results: Ten years after diagnosis, 35 of the 113 (31%) plant-food-allergic patients sensitized to nsLTP reported reactions to new, previously tolerated plant foods, mainly Rosaceae/Prunoideae fruits and nuts followed by vegetables, Rosacea/Pomoideae fruits, legumes, and cereals. Five out of 38 (13.2%) patients previously sensitized to nsLTP but without allergy to any plant food had experienced allergic reactions to some plant food: two to Rosaceae/Prunoideae fruits, two to Rosaceae/Prunoideae fruit and nuts, and one to legumes. Conclusion: Patients sensitized to nsLTP developed allergic reactions to other plant foods, mainly Rosaceae-Prunoideae fruits and nuts. This was more frequent among plant-food-allergic patients than among those who had never had plant-food allergy

    Estudio de la forma y tamaño de los incisivos superiores de los estudiantes de odontología según el principio embriogenético de Gerber

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    The aim of this work was to find the pattern more prevalent according to Gerber’s embriogenetic principle. A sample of 100 students of Dentistry of San Marcos University between 18 and 27 years, without alterations in the upper anterior sector, were examinated clinically, photographic analysis and diagnostic models were conducted. Statistical analysis was performed with the program SPSS 19. Results: the most common biotype (according to Mayoral) was braquifatial (50 %), followed mesofatial (44 %) and dolicofatial (6 %). We find consistent agreement with the second and third postulate of Gerber (2nd postulated: proportion between size of the central incisors and lateral incisors, is similar to proportionbe tween the base and the nasal root; and postulated 3rd: there is a relationship between the angulation of the flat incisal and nasal base line - alar index); but was no agreement with the first postulate (1st postulated: the width of the four incisors would correspond to the length of the width of the nasal base). Also was found the central incisor mesiodistal diameter average 8. 62±0. 52 IC 95 8.55-8.69, side incisor average diameter 7.08±0. 55 IC 95 7.00-7.16 and four incisors diameter (31.07 to 31.75 mm IC 95) altogether, just this last measure there was no coincidence with the nasal base (37.32 to 38.7 mm IC 95). Nasal base was always greater than the diameter of the incisors which makes us understand that it is not a standard reference to select the diameter for aesthetic rebuilders aspects in Peruvian population.El objetivo de éste trabajo fue encontrar el patrón mas prevalente acorde con el principio embriogénico de Gerber. Se trabajó con una muestra de 100 estudiantes de odontología de la UNMSM de ambos sexos entre 18 y 27 años, sin alteraciones en el sector anterosuperior, a los que se les realizó un examen clínico, análisis fotográfico y modelos de estudio. El análisis estadístico se realizó con el programa SPSS 19. Se observó comol biotipo mas frecuente (según Mayoral) el braquifacial (50 %), seguido del mesofacial (44 %) y dólicofacial (6 %), se encontró concordancia con el segundo y tercer postulado de Gerber (2do postulado: proporción de los incisivos centrales y laterales similar a la proporción entre la base y la raíz nasal; y 3er postulado: relación entre la angulación del plano incisal con la línea base nasal -índice alar o índice de Gerber-); pero no se encontró concordancia con el primero postulado (1er postulado: el ancho de los cuatro incisivos correspondería a la longitud del ancho de la base nasal). Se halló el diámetro mesiodistal promedio del incisisvo central 8.62±0.52 IC 95% 8.55-8.69, incisivo lateral 7.08±0.55 IC 95% 7.00-7.16 y de los cuatro incisivos en conjunto (31.07 a 31.75 mm IC 95%), ésta última medida fue la no coincidente con la base nasal (37.32 a 38.7 mm IC 95 %), la cual siempre fue mayor que el diámetro de los incisivos, lo que significa que no puede ser un patrón de referencia para la población peruana para aspectos estéticos reahabilitadores

    PR-LncRNA Signature Regulates Glioma Cell Activity Through Expression of SOX Factors

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    Long non-coding RNAs (LncRNAs) have emerged as a relevant class of genome regulators involved in a broad range of biological processes and with important roles in tumor initiation and malignant progression. We have previously identified a p53-regulated tumor suppressor signature of LncRNAs (PR-LncRNAs) in colorectal cancer. Our aim was to identify the expression and function of this signature in gliomas. We found that the expression of the four PR-LncRNAs tested was high in human low-grade glioma samples and diminished with increasing grade of disease, being the lowest in glioblastoma samples. Functional assays demonstrated that PR-LncRNA silencing increased glioma cell proliferation and oncosphere formation. Mechanistically, we found an inverse correlation between PR-LncRNA expression and SOX1, SOX2 and SOX9 stem cell factors in human glioma biopsies and in glioma cells in vitro. Moreover, knock-down of SOX activity abolished the effect of PR-LncRNA silencing in glioma cell activity. In conclusion, our results demonstrate that the expression and function of PR-LncRNAs are significantly altered in gliomagenesis and that their activity is mediated by SOX factors. These results may provide important insights into the mechanisms responsible for glioblastoma pathogenesis.PA, JA-I and AS-A were recipients of a predoctoral fellowship from the Spanish Association Against Cancer (AECC Gipuzkoa), Basque Government and Instituto Salud Carlos III. This work was supported by grants from the Carlos III Institute of Health and the European Regional Development Fund (PI13/02277, CP16/00039, DTS16/084, and PI16/01580) and Industry and Health Departments of the Basque Country

    Évaluation de l’aléa et du risque sismique en Haïti dirigée vers la conception parasismique

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    Après le séisme qui eut lieu en Haïti le 12 janvier 2010, dont l’épicentre a été localisé non loin de la capitale, Port-au-Prince (25 km en direction sud-est), d’une magnitude Mw 7.0 et à une profondeur de 13 km, le pays s’est retrouvé dans une situation catastrophique et d’extrême pauvreté, avec des graves carences en matière de santé, nutrition, éducation et logement. Les effets du tremblement de terre ont été dévastateurs pour la population : on compte plus de 300.000 morts, presque autant de blessés et 1,3 millions de sans-abri logès dans des campements « provisoires ». Quant aux conséquences matérielles, le séisme a totalement détruit près de 100.000 maisons et endommagé près de 200.000 (source : USGS). Ce tremblement de terre a été le plus fort enregistré dans la zone depuis 1770. De plus le séisme fut perceptible dans des pays voisins comme Cuba, la Jamaïque et la République Dominicaine, où il a provoqué l’alarme et des évacuations préventives. La reconstruction du pays reste un sujet prioritaire pour la coopération internationale. Le présent projet, SISMO-HAITÍ, a été développé dans le but d’apporter la connaissance et l’information nécessaires afin de faciliter la prise de mesures préventives face au risque sismique existant, afin d’éviter qu’un éventuel futur séisme ne déclenche une nouvelle catastrophe. Dans le cas d’Haïti, aucune institution n’était chargée d’assurer une surveillance sismique, mais un contact direct a été établi avec l’Observatoire National de l’Environnement et de la Vulnérabilité (ONEV) en Haïti à travers son directeur Dwinel Belizaire Ing. M. Sc., qui est précisément celui qui a sollicité l’aide qui a motivé la présente proposition. Le but ultime de ce projet est l’étude des mesures d’atténuation du risque élevé qui demeure, contribuant ainsi au développement durable de la région. Dans cette optique, la menace sismique en Haïti a été évaluée, constituant la base sur laquelle on prétend élaborer des critères de conception parasismique pour la reconstruction du pays qui pourront être inclus dans la première version de la norme antisismique, ainsi que le risque sismique à Port-au-Prince, dont les résultats serviront de base pour élaborer les plans d’urgence face à ce risque naturel. Les objectifs spécifiques atteints sont : • Évaluation de l'aléa sismique en Haïti. On en obtient des cartes de différents paramètres de mouvement pour différentes probabilités de dépassement (ce qui suppose connaître la probabilité associée aux mouvements dus à des tremblements futurs). • Évaluation de l'effet local à Port-au-Prince et élaboration d'une carte de microzonage de la ville. • Étude de la vulnérabilité sismique locale à Port-au-Prince. • Estimation du risque sismique à Port-au-Prince. • Mesures d'atténuation du risque et de conception parasismique. Ce rapport résume les activités et les résultats obtenus a cours de l'année 2011 lors de la mise en œuvre de ce projet. Le groupe de travail est une équipe multidisciplinaire composée de chercheurs de différents établissements universitaires et de recherche (Université Polytechnique de Madrid-UPM-, Conseil Supérieur de la Recherche Scientifique (CSIC) ; U. Complutense de Madrid-UCM-, U-UA-Alicante, Almeria-UAL-U., U. Autonome de Saint-Domingue, UASD et Université de Porto Rico Mayagüez--UPRM) experts dans les diverses matières impliquées dans le projet: géologie, sismologie, génie parasismique, architecture et gestion de l'information géographique. Tous les membres de cette équipe ont travaillé ensemble tout au long de l'année, en réalisant des réunions, des ateliers de travail, des vidéoconférences, en plus d'une visite à Port-au-Prince en Juillet 2011 afin de procéder à la première collecte de données
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