Northwestern Statues-menhir in context: connectivity and material connections during the Late Bronze Age

Este artículo analiza las estatuas-menhir noroccidentales que se distribuyen en el área comprendida entre los valles del río Duero y el río Miño, pero que descubrimientos recientes han extendido a regiones fuera de este área nuclear. Partiendo de tres aspectos claves para su interpretación (la cronología, su relación con el paisaje y su sentido iconográfico), se examinan las relaciones entre estas formas materiales y un paisaje socio-material de acción específico (las formas socio-materiales de interacción propias del Bronce final atlántico). Para ello, se tiene en cuenta diferentes conexiones materiales (presencia, encuentro, coexistencia, hibridación, etc.) que permiten contextualizar las estatuasmenhir dentro de un proceso histórico particular: la integración del noroeste de la península Ibérica en un contexto de relaciones mediterráneo-atlánticas, en la segunda mitad del II milenio a.C.This paper examines the northwestern staute-menhirs which are distributed in the area between the valleys of the river Duero and the river Miño, but that recent findings have extended to other regions outside that core area. Taking three key issues on the interpretation of them (chronology, landscape and image) as a starting point, this analysis focuses on the material relations between these material forms and a specific socio-material landscape of action (the sociomaterial forms of interaction characteristic to Atlantic Late Bronze Age). To this end, it takes into account different material connections (such as presence, encounter, coexistence, hybridization, etc.) that enable to contextualize the statues-menhir as part of a specific historical process: the integration of the northwestern Iberia in the interaction contexts between the Mediterranean and the Atlantic since the end of the 2nd millennium BC

In the land of tin men? Warrior stelae, mobility, and interaction in western Iberia during the Late Prehistory

Funding for open access publishing: Universidad de Sevilla/ CBUA Javier Rodriguez-Corral is a fellow of the VI PPIT-US funded by Universidad de Sevilla. Carlos Rodriguez Rellán is an EMERGIA fellow (EMERGIA20_00349), funded by the Secretaría General de Universidades, Investigación y Tecnología de la Junta de Andalucía. This research was also funded in the framework of a research project with reference number PID2022-139879NB-I00, funded by the Minis- terio de Ciencia e Innovación of the Government of Spain.The warrior stelae, also called southwestern stelae or western stelae, emerge as one of the most characteristic manifestations of the Bronze Age in Iberia. Since the earliest findings more than a century ago, these monoliths have received great attention from scholars, becoming the subject of an intense debate, without a consensus having been reached on their meaning and sense. A slow but steady trickle of new findings, as well as the implementation of new approaches to their study, has only enriched these discussions in recent years. One of the most successful lines has been the spatial analysis focused on the relationship of these monuments with routes, transit areas, and resources of great value. It is within this line that this article explores the potential relationship that the stelae may have had with a critical mineral resource: the tin ores distributed in western Iberia, which is the highest concentration of this mineral in Europe. To do this, a detailed spatial analysis has been conducted in order to explore if the uneven density of these monuments across western Iberia may be linked with the presence of tin ores or, alternatively, with the control of the routes that allowed the circulation of this mineral by land.Universidad de Sevilla/CBUASecretaría General de Universidades, Investigación y Tecnología de la Junta de Andalucía EMERGIA20_00349Ministerio de Ciencia e Innovación of the Government of Spain PID2022-139879NB-I0

Theory and interpretation in archeology of death

La arqueología de la muerte y la identidad es clave para comprender las sociedades pretéritas. A través de los restos de rituales funerarios, los arqueólogos estudian no solo las actitudes y sentimientos que los individuos en el pasado desarrollaron en relación a la muerte y el Más Allá, sino también su cultura, sistema social y visión del mundo. Este artículo proporciona una visión y síntesis de uno de los campos de estudio más relevantes en la investigación, centrándose especialmente en las cuestiones teóricas que han alentado las diferentes aproximaciones al tema a lo largo del tiempo.The archaeology of death and identity is crucial to our attempts to understand past societies. Through the remains of funerary rituals, archaeologists study not only ancient people’s attitudes and feelings toward death and the afterlife but also about their culture, social system, and world view. This paper provides an overview and synthesis of one of the most revealing fields of research into the past, focusing on the theoretical issues that have encouraged the different approaches over the time

A metal-organic framework based on Co(II) and 3-aminoisonicotinate showing specific and reversible colourimetric response to solvent exchange with variable magnet behaviour

Supplementary data to this article can be found online at https://doi.org/10.1016/j.mtchem.2022.100794.This work has been funded by the Spanish Ministry of Science, Innovation and Universities (MCIU/AEI/FEDER, UE; PGC2018- 102052-A-C22, PGC2018-102052-B-C21 and PID2019-108028GBC21), University of the Basque Country (GIU20/028), Gobierno Vasco/Eusko Jaurlaritza (IT1005-16, IT1291-19) and Junta de Andalucía (FQM-394, B-FQM-734-UGR20). O.P.C. thanks his predoctoral fellowship to UPV/EHU. The authors thank for technical and human support provided by SGIker of UPV/EHU and European funding (ERDF and ESF).A versatile metal-organic system consisting of Co-based compounds that show reversible transformations between a 3D metal-organic framework (MOF) of {[Co(μ-3isoani)2]·DMF}n (1) formula (where 3isoani = 3-aminoisonicotinato and DMF = dimethylformamide) and a 0D monomeric [Co(3isoani)2(H2O)4] (2) complex is reported. These 1 ↔ 2 transformations, triggered by the exposure of the MOF and the monomer-based compound to H2O and DMF, respectively, involve colour changes from purple (in MOF 1) to light brown (in monomeric complex 2), which imbues the system with colourimetric sensing capacity towards these solvents. Despite the high reactivity of the MOF in contact with water, it presents good thermal stability and permanent porosity with a remarkably high CO2 capture capacity at room temperature (3.35 mmol/g), which is further analysed by in situ single-crystal X-ray diffraction. Experimental magnetic properties and CASSCF/NEVPT2 calculations of all compounds reveal distinct slow magnetic relaxations for 3D and 0D compounds.Spanish Ministry of Science, Innovation and Universities (MCIU/AEI/FEDER, UE; PGC2018- 102052-A-C22, PGC2018-102052-B-C21 and PID2019-108028GBC21)University of the Basque Country (GIU20/028)Gobierno Vasco/Eusko Jaurlaritza (IT1005-16, IT1291-19)Junta de Andalucía (FQM-394, B-FQM-734-UGR20

TPU Cloud-Based Generalized U-Net for Eye Fundus Image Segmentation

Medical images from different clinics are acquired with different instruments and settings. To perform segmentation on these images as a cloud-based service we need to train with multiple datasets to increase the segmentation independency from the source. We also require an ef cient and fast segmentation network. In this work these two problems, which are essential for many practical medical imaging applications, are studied. As a segmentation network, U-Net has been selected. U-Net is a class of deep neural networks which have been shown to be effective for medical image segmentation. Many different U-Net implementations have been proposed.With the recent development of tensor processing units (TPU), the execution times of these algorithms can be drastically reduced. This makes them attractive for cloud services. In this paper, we study, using Google's publicly available colab environment, a generalized fully con gurable Keras U-Net implementation which uses Google TPU processors for training and prediction. As our application problem, we use the segmentation of Optic Disc and Cup, which can be applied to glaucoma detection. To obtain networks with a good performance, independently of the image acquisition source, we combine multiple publicly available datasets (RIM-One V3, DRISHTI and DRIONS). As a result of this study, we have developed a set of functions that allow the implementation of generalized U-Nets adapted to TPU execution and are suitable for cloud-based service implementation.Ministerio de Economía y Competitividad TEC2016-77785-

Radio-frequency heating of the cornea: theoretical model and in vitro experiments

[EN] We present a theoretical model for the study of cornea heating with radio-frequency currents. This technique is used to reshape the cornea to correct refractive disorders. Our numerical model has allowed the study of the temperature distributions in the cornea and to estimate the dimensions of the lesion. The model incorporates a fragment of cornea, aqueous humor, and the active electrode placed on the cornea surface. The finite element method has been used to calculate the temperature distribution in the cornea by solving a coupled electric-thermal problem. We analyzed by means of computer simulations the effect of: a) temperature influence on the tissue electrical conductivity; b) the dispersion of the biological characteristics; c) the anisotropy of the cornea thermal conductivity; d) the presence of the tear film; and e) the insertion depth of the active electrode in the cornea, and the results suggest that these effects have a significant influence on the temperature distributions and thereby on the lesion dimensions. However, the cooling of the aqueous humor in the endothelium or the realistic value of the cornea curvature did not have a significant effect on the temperature distributions. An experimental model based on the lesions created in rabbit eyes has been used in order to compare the theoretical and experimental results. There is a tendency toward the agreement between experimental and theoretical results, although we have observed that the theoretical model overestimates the lesion dimension.Berjano, E.; Saiz Rodríguez, FJ.; Ferrero Corral, JM. (2002). Radio-frequency heating of the cornea: theoretical model and in vitro experiments. IEEE Transactions on Biomedical Engineering. 49(3):196-205. doi:10.1109/10.983453S19620549

Effect of silvicultural treatments on forest diversity and structure in temperate forests under management in Durango, Mexico

The present study evaluated the effect of silvicultural treatments on the diversity and structure of species in temperate forest ecosystems in the Municipality of Pueblo Nuevo in the State of Durango, Mexico; it was carried out to know if forest use modifies the diversity, mixture of species, spatial distribution, and dimensional differentiation of individuals in these ecosystems. The evaluation was carried out by comparing 10 plots with management history, which were measured before the application of the treatment and five years later. The diversity indices of Shannon, Simpson and Margalef were compared, as well as indices of structure of mixture of species, spatial distribution, and dimensional differentiation. According to the silvicultural treatments applied, the values of the indices do not present significant differences in their evaluations (p> 0.05), which indicates that forest use does not modify the diversity and structure of species of the tree stratum of this plant community

Creating datasets for data analysis through a cloud microservice-based architecture

Data analysis is a trending technique due to the tendency of analyzing patterns or generating knowledge in different domains. However, it is difficult to know at design time what raw data should be collected, how it is going to be analyzed or which analysis techniques will be applied to data. Service-oriented architectures can be applied to solve these problems by providing flexible and reliable architectures. In this paper, we present a microservice-based software architecture in the cloud with the aim of generating datasets to carry out data analysis. This architecture facilitates acquiring data, which may be located in a data center, distributed, or even on different devices (ubiquitous computing) due to the rise of the IoT. It provides an infrastructure over which multiple developer’ groups can work in parallel on the microservices. These microservices also provide a reliable and affordable adaptability to the lack of specific requirements in some functionalities and the fast evolution and variability of them, due to the fast changing of client needs