Apuntes preliminares sobre la arqueología del Campo del Pucará y alrededores : (Dto. de Andalgalá, Catamarca)

Fil: Rex González, Alberto. Universidad de Buenos Aires. Facultad de Filosofía y Letras. Museo EtnográficoFil: Núñez Regueiro, Víctor. Universidad de Buenos Aire

Guía de información para el control de la contaminación de gases y humos del proceso de soldadura.

El sector metalmecánico es uno de los más importantes para el desarrollo de un País necesitando la utilización de materias primas importantes como la soldadura que une dos o más metales por medio de una fusión localizada generando varios procesos por los cuales se producen gases y humos que afectan tanto al soldador, dando como resultado diferentes tipos de enfermedades, como también al ambiente y el entorno básico del lugar. Para este proyecto se realiza un diagnóstico de condiciones de trabajo del soldador que incluye factores de riesgo básicos en el desarrollo del mismo como los físicos y químicos, condiciones de seguridad, sicolaborales y ergonómicas. El análisis parte de la base de la identificación del factor de riesgo, siguiendo por la valoración del mismo arrojando como resultados algunas disposiciones que se van a tomar en cuenta para la elaboración de la guía. Se estructura una guía en este trabajo en donde se plasman buenas prácticas para el control de la contaminación de gases y humos de soldaduras y la protección del soldador, advirtiendo tres de los procesos más usados (SMAW, MIG Y TIG) y de los cuales se generan diferentes materiales peligrosos que ocasionan enfermedades que pasan desde una simple molestia o gripa hasta dificultades para respirar con daño pulmonar llegando algunas veces al cáncer. La importancia que tiene la seguridad industrial para el soldador es tenida muy en cuenta con el uso de guantes, gafas, delantal, mangas, capuchón, botas, protectores auriculares, una careta y una mascarilla con filtros que soporten partículas metálicas diminutas. La guía que se desarrolla en este documento es de origen informativa permitiendo reunir elementos importantes para orientar la forma de realizar el trabajo del soldador con buenos estándares de seguridad industrial y respeto por el entorno ambiental con los que relaciona. La forma que debe actuar el trabajador y el empleador está regido por normas que se deben cumplir sin discusión alguna dando la posibilidad de tener buenas prácticas de trabajo y como consecuencia alcanzar niveles notables de productividad por tener personal con adecuadas condiciones de salud minimizando los riesgos profesionales en el sitio, la afectación del entorno ambiental y su posible contaminación. En la búsqueda de buenas prácticas para el desarrollo del trabajo del soldador se relacionan diferentes métodos de control de gases y humos que se pueden generar de los procesos de soldadura y su selección depende del caso en especial en donde se pueden sumar factores como la dimensión de la pieza, la posición para soldar, la movilidad del soldador, el espacio utilizado, el área dispuesta por la empresa, entre otros

The games as a pegagogical tool in the improvement of its teaching practice

The objective of the research was to analyze how the game through its various methodological, playful and didactic strategies enable the development of the pedagogical practice developed by teachers of the initial level in the teachinglearning process. The methodology used was centered on the qualitative approach, based on interpreting the meaning of the actions carried out by the teachers using the semi-structured interview technique, whose instrument was the questionnaire based on open questions. The results showed that the teachers managed to improve their work at the pedagogical level and significantly after having been prepared and developing this strategy

How should the sustainability of the location of dry ports be measured? A proposed methodology using Bayesian networks and multi-criteria decision analysis

The global economic structure, with its decentralized production and the consequent increase in freight traffic all over the world, creates considerable problems and challenges for the freight transport sector. This situation has led shipping to become the most suitable and cheapest way to transport goods. Thus, ports are configured as nodes with critical importance in the logistics supply chain as a link between two transport systems, sea and land. Increase in activity at seaports is producing three undesirable effects: increasing road congestion, lack of open space in port installations and a significant environmental impact on seaports. These adverse effects can be mitigated by moving part of the activity inland. Implementation of dry ports is a possible solution and would also provide an opportunity to strengthen intermodal solutions as part of an integrated and more sustainable transport chain, acting as a link between road and railway networks. In this sense, implementation of dry ports allows the separation of the links of the transport chain, thus facilitating the shortest possible routes for the lowest capacity and most polluting means of transport. Thus, the decision of where to locate a dry port demands a thorough analysis of the whole logistics supply chain, with the objective of transferring the largest volume of goods possible from road to more energy efficient means of transport, like rail or short-sea shipping, that are less harmful to the environment. However, the decision of where to locate a dry port must also ensure the sustainability of the site. Thus, the main goal of this article is to research the variables influencing the sustainability of dry port location and how this sustainability can be evaluated. With this objective, in this paper we present a methodology for assessing the sustainability of locations by the use of Multi-Criteria Decision Analysis (MCDA) and Bayesian Networks (BNs). MCDA is used as a way to establish a scoring, whilst BNs were chosen to eliminate arbitrariness in setting the weightings using a technique that allows us to prioritize each variable according to the relationships established in the set of variables. In order to determine the relationships between all the variables involved in the decision, giving us the importance of each factor and variable, we built a K2 BN algorithm. To obtain the scores of each variable, we used a complete cartography analysed by ArcGIS. Recognising that setting the most appropriate location to place a dry port is a geographical multidisciplinary problem, with significant economic, social and environmental implications, we consider 41 variables (grouped into 17 factors) which respond to this need. As a case of study, the sustainability of all of the 10 existing dry ports in Spain has been evaluated. In this set of logistics platforms, we found that the most important variables for achieving sustainability are those related to environmental protection, so the sustainability of the locations requires a great respect for the natural environment and the urban environment in which they are framed

Rare earth based nanostructured materials: Synthesis, functionalization, properties and bioimaging and biosensing applications

Rare earth based nanostructures constitute a type of functional materials widely used and studied in the recent literature. The purpose of this review is to provide a general and comprehensive overview of the current state of the art, with special focus on the commonly employed synthesis methods and functionalization strategies of rare earth based nanoparticles and on their different bioimaging and biosensing applications. The luminescent (including downconversion, upconversion and permanent luminescence) and magnetic properties of rare earth based nanoparticles, as well as their ability to absorb X-rays, will also be explained and connected with their luminescent, magnetic resonance and X-ray computed tomography bioimaging applications, respectively. This review is not only restricted to nanoparticles, and recent advances reported for in other nanostructures containing rare earths, such as metal organic frameworks and lanthanide complexes conjugated with biological structures, will also be commented on.European Union 267226Ministerio de Economía y Competitividad MAT2014-54852-

iCanCloud: a flexible and scalable cloud infrastructure simulator

Simulation techniques have become a powerful tool for deciding the best starting conditions on pay-as-you-go scenarios. This is the case of public cloud infrastructures, where a given number and type of virtual machines (in short VMs) are instantiated during a specified time, being this reflected in the final budget. With this in mind, this paper introduces and validates iCanCloud, a novel simulator of cloud infrastructures with remarkable features such as flexibility, scalability, performance and usability. Furthermore, the iCanCloud simulator has been built on the following design principles: (1) it's targeted to conduct large experiments, as opposed to others simulators from literature; (2) it provides a flexible and fully customizable global hypervisor for integrating any cloud brokering policy; (3) it reproduces the instance types provided by a given cloud infrastructure; and finally, (4) it contains a user-friendly GUI for configuring and launching simulations, that goes from a single VM to large cloud computing systems composed of thousands of machines.This research was partially supported by the following projects: Spanish MEC project TESIS (TIN2009-14312-C02-01), and Spanish Ministry of Science and Innovation under the grant TIN2010-16497.Publicad

TREATMENT OF UNCERTAINTIES IN THE EXISTENCE OF FREE BERTHS WITH RISK ANALYSIS TECHNIQUES. ESTABLISHMENT OF POLICIES IN PORT OF CADIZ (SPAIN)

[EN] his research discusses the challenges involved in the treatment of uncertainties in the existence of free berths during the arrival of cruise ships at seaports. Pursuing this goal, a three-step methodology is adopted: 1) Identifying risk sources and critical risk variables and how they are related; 2) Fitting the Probability Distribution Functions that best represent the behaviour of each critical risk variable; and 3) Simulating the probability of a ship having to wait because there are no free berths using a technique that combines statistical concepts (random sampling) with the ability of computers to generate pseudo-random numbers and automate estimations of the values of the set of critical risk variables. The innovative use of risk analysis techniques in this field allows the establishment of policies to improve the planning and management of port infrastructure, for example, deciding when it is necessary to work to increase the number of berths. As a case of study, we applied this methodology to study whether the enlargement of the wharf in the port of Cadiz (Spain) is necessary right now considering the number of cruise ships that have arrived at the port in the past three years, their date and hour of arrival, their length and draught, the duration of their stay in port and their waiting time before being able to enter the port. This action would require moving logistics activities to a new terminal, but would bring to the city the opportunity to rethink the seafront, introducing new cruiser links with the city centre and developing a better seaport-city integration.Awad Núñez, S.; Camarero Orive, A.; Romero Sánchez-Brunete, M.; Camarero Orive, A.; González Cancelas, N. (2016). TREATMENT OF UNCERTAINTIES IN THE EXISTENCE OF FREE BERTHS WITH RISK ANALYSIS TECHNIQUES. ESTABLISHMENT OF POLICIES IN PORT OF CADIZ (SPAIN). En XII Congreso de ingeniería del transporte. 7, 8 y 9 de Junio, Valencia (España). Editorial Universitat Politècnica de València. 1418-1429. https://doi.org/10.4995/CIT2016.2016.3721OCS1418142

Interacciones de la Historia del Arte con otras disciplinas científicas I: Arte y Medicina

El proyecto de innovación docente se ha estructurado como una práctica formativa interdisciplinaria que ha vinculado dos áreas científicas: arte y medicina, y ha potenciado, muy especialmente, el aprendizaje autónomo de los estudiantes. Estos dos enfoques constituyen las principales estrategias metodológicas. Los alumnos que participaron en la experiencia innovadora recopilaron imágenes artísticas directamente relacionadas con enfermedades o con las diferentes prácticas y especialidades de la medicina. Una vez realizada esta tarea, elaboraron fichas de análisis de las obras seleccionadas o trabajos alusivos al tema escogido, siguiendo el modelo proporcionado por el equipo docente. La acción formativa se completó con la realización del Seminario Arte y Medicina , en el que participaron los estudiantes implicados, el equipo docente y varios especialistas de la medicina y las bellas artes, y con la creación de la página web del equipo docente, donde se recogen los mejores trabajos de los estudiant

Upgrading the Power Grid Functionalities with Broadband Power Line Communications: Basis, Applications, Current Trends and Challenges

This article reviews the basis and the main aspects of the recent evolution of Broadband Power Line Communications (BB-PLC or, more commonly, BPL) technologies. The article starts describing the organizations and alliances involved in the development and evolution of BPL systems, as well as the standardization institutions working on PLC technologies. Then, a short description of the technical foundation of the recent proposed technologies and a comparison of the main specifications are presented; the regulatory activities related to the limits of emissions and immunity are also addressed. Finally, some representative applications of BPL and some selected use cases enabled by these technologies are summarized, together with the main challenges to be faced.This work was financially supported in part by the Basque Government under the grants IT1426-22, PRE_2021_1_0006, and PRE_2021_1_0051, and by the Spanish Government under the grants PID2021-124706OB-I00 and RTI2018-099162-B-I00 (MCIU/AEI/FEDER, UE, funded by MCIN/AEI/10.13039/501100011033 and by “ERDF A way of making Europe”)

A Subcell Finite-Difference Time-Domain Implementation for Narrow Slots on Conductive Panels

Funded by the European Union under GA no 101101961-HECATE. Views and opinions expressed are, however, those of the author(s) only and do not necessarily reflect those of the European Union or Clean Aviation Joint Undertaking. Neither the European Union nor the granting authority can be held responsible for them. The project is supported by the Clean Aviation Joint Undertaking and its Members and, by Spanish Ministry of Science and Innovation (MICINN) under projects eSAFE-UAV PID2019-106120RB-C32; PID2019-106120RB-C33.Efficiently modeling thin features using the finite-difference time-domain (FDTD) method involves a considerable reduction in the spatial mesh size. However, in real-world scenarios, such reductions can lead to unaffordable memory and CPU requirements. In this manuscript, we present two stable and efficient techniques in FDTD to handle narrow apertures on conductive thin panels. One technique employs conformal methods, while the other utilizes subgridding methods. We validate their performance compared to the classical Gilbert-Holland model and present experimental results in reverberation environments to shed light on these models' actual confidence margins in real electromagnetic compatibility (EMC) scenarios.European Union (EU) 101101961HECATEClean Aviation Joint UndertakinSpanish Government eSAFE-UAV PID2019-106120RB-C32, PID2019-106120RB-C3