Search

Your search keyword '"Alba, P."' showing total 15,010 results
Start Over Author "Alba, P." Search Limiters Academic (Peer-Reviewed) Journals

Refine your results

15,010 results on '"Alba, P."'

1. Probing Short-Range Correlations in the van der Waals Magnet CrSBr by Small-Angle Neutron Scattering

Author

Rybakov, Andrey, Boix-Constant, Carla, Venero, Diego Alba, van der Zant, Herre S. J., Mañas-Valero, Samuel, and Coronado, Eugenio

Subjects
Condensed Matter - Strongly Correlated Electrons
Abstract

The layered metamagnet CrSBr offers a rich interplay between magnetic, optical and electrical properties that can be extended down to the two-dimensional (2D) limit. Despite the extensive research regarding the long-range magnetic order in magnetic van der Waals materials, short-range correlations have been loosely investigated. By using Small-Angle Neutron Scattering (SANS) we show the formation of short-range magnetic regions in CrSBr with correlation lengths that increase upon cooling up to ca. 3 nm at the antiferromagnetic ordering temperature (TN ~ 140 K). Interestingly, these ferromagnetic correlations start developing below 200 K, i.e., well above TN. Below TN, these correlations rapidly decrease and are negligible at low-temperatures. The experimental results are well-reproduced by an effective spin Hamiltonian, which pinpoints that the short-range correlations in CrSBr are intrinsic to the monolayer limit, and discard the appearance of any frustrated phase in CrSBr at low-temperatures within our experimental window between 2 and 200 nm. Overall, our results are compatible with a spin freezing scenario of the magnetic fluctuations in CrSBr and highlight SANS as a powerful technique for characterizing the rich physical phenomenology beyond the long-range order paradigm offered by van der Waals magnets., Comment: Main Text + Supplementary Information

Published
2024
Full Text
View/download PDF

2. ROCOv2: Radiology Objects in COntext Version 2, an Updated Multimodal Image Dataset

Author

Rückert, Johannes, Bloch, Louise, Brüngel, Raphael, Idrissi-Yaghir, Ahmad, Schäfer, Henning, Schmidt, Cynthia S., Koitka, Sven, Pelka, Obioma, Abacha, Asma Ben, de Herrera, Alba G. Seco, Müller, Henning, Horn, Peter A., Nensa, Felix, and Friedrich, Christoph M.

Subjects
Electrical Engineering and Systems Science - Image and Video Processing, Computer Science - Computer Vision and Pattern Recognition, Computer Science - Machine Learning
Abstract

Automated medical image analysis systems often require large amounts of training data with high quality labels, which are difficult and time consuming to generate. This paper introduces Radiology Object in COntext version 2 (ROCOv2), a multimodal dataset consisting of radiological images and associated medical concepts and captions extracted from the PMC Open Access subset. It is an updated version of the ROCO dataset published in 2018, and adds 35,705 new images added to PMC since 2018. It further provides manually curated concepts for imaging modalities with additional anatomical and directional concepts for X-rays. The dataset consists of 79,789 images and has been used, with minor modifications, in the concept detection and caption prediction tasks of ImageCLEFmedical Caption 2023. The dataset is suitable for training image annotation models based on image-caption pairs, or for multi-label image classification using Unified Medical Language System (UMLS) concepts provided with each image. In addition, it can serve for pre-training of medical domain models, and evaluation of deep learning models for multi-task learning., Comment: Accepted for Scientific Data

Published
2024
Full Text
View/download PDF

3. Small area variations in non-affective first-episode psychosis: the role of socioeconomic and environmental factors

Author

Gutiérrez, Gerardo, Goicoa, Tomas, Ugarte, María Dolores, Aranguren, Lidia, Corrales, Asier, Gil-Berrozpe, Gustavo, Librero, Julián, Sánchez-Torres, Ana M., Peralta, Victor, García de Jalon, Elena, Cuesta, Manuel J., Martínez, Matilde, Otero, Maria, Azcarate, Leire, Pereda, Nahia, Monclús, Fernando, Moreno, Laura, Fernández, Alba, Ariz, Mari Cruz, Sabaté, Alba, Aquerreta, Ainhoa, Aguirre, Izaskun, Lizarbe, Tadea, and Begué, Maria Jose

Published
2024
Full Text
View/download PDF

4. Autistic Adults' Views on the Design and Processes within Randomised Controlled Trials: The APRiCoT Study

Author

Lucy Beasant, Alba Realpe, Sarah Douglas, Lorcan Kenny, Dheeraj Rai, and Nicola Mills

Abstract

The purpose of this study is to explore the views of autistic adults on randomised controlled trials, specifically on processes such as randomisation and blinding, to understand the barriers and facilitators for recruiting autistic people to randomised controlled trials involving medications. We conducted one-to-one interviews with 49 autistic adults. Interviews were audio-recorded and analysed thematically. The participants found randomised controlled trial processes acceptable and linked positive attitudes towards randomised controlled trial participation to autistic peoples' heightened sense of fairness and preference for evidence-driven knowledge. However, randomised controlled trial designs may be incompatible with a (1) preference for a controlled predictable world, (2) perceived vulnerability at physical and mental health levels and (3) history of misunderstanding and exclusion, crucially from healthcare professionals. Suggestions that emerged from our findings include efforts to co-produce research to nurture trust and adapting communication practices to improve access to trials. Autistic people are a highly motivated group to work with research teams to mitigate barriers to randomised controlled trial participation. We explored what psychosocial determinants play a role in the acceptability of randomised controlled trials to test interventions to improve quality of life and mental health in autistic adults. The study provides useful information that may help the design and conduct of more accessible trials with and for the autistic community.

Published
2024
Full Text
View/download PDF

5. Local Health Service Response to COVID-19 in Mexico: Notes from an Exploratory Qualitative Study

Author

Gaudencio Gutiérrez-Alba, José Alberto Muños Hernández, Clara Juárez-Ramírez, Diana L. Reartes-Peñafiel, and Hortensia Reyes-Morales

Abstract

Background: The main goal of a health system is to maintain or improve people's health. The COVID-19 pandemic showed the fragility of health systems worldwide. In Mexico, the pandemic affected the performance of the health system, along with the presence of contextual conditions such as its segmentation and high prevalence of chronic diseases. Aims: To analyze from an approach to the functions of the health system, the service delivery, human resources, financing, and stewardship/governance in the local health services of five states of Mexico, from the perspective of the staff working in health centers. Methods: This is an exploratory qualitative study conducted from November 2020 to August 2021, involving 124 health professionals from 39 health facilities (18 rural and 21 urban). The technique used was the semi-structured interview. Interview guides were developed according to core topics. Subsequently, the thematic analysis method was used. Results: The lack of financial resources delayed prevention efforts and made it difficult for health centers to adapt to the crisis. Inequity was found in the distributive efficiency of staff between rural and urban areas and levels of care. In addition, there was evidence of capacity for coordination, capacity sharing, and joint participation between health institutions, civil authorities, and the population to face the emergency. Conclusions: We identified relevant public health actions that showed the capacity of local health services to organize a response to the pandemic at the level of the actors responsible for these services.

Published
2024
Full Text
View/download PDF

6. Seeing or Acting? The Effect of Performing Gestures on Foreign Language Vocabulary Learning

Author

Ana B. García-Gámez, Óscar Cervilla, Alba Casado, and Pedro Macizo

Abstract

We evaluate the impact of gestures during the teaching of vocabulary in a foreign language (FL). Spanish speakers learned words in a FL in four gesture conditions according to the relationship between the meaning of the words and the gestures (congruent gestures, incongruent gestures, gestures without meaning, and no gestures). The participants learned the words by performing gestures ('do' teaching group) or by observing the gestures performed by others ('see' teaching group). Compared to the meaningless gesture condition, the processing of congruent gestures facilitated the recall of second language (L2) words in the 'see' and 'do' teaching groups. However, the interference effect associated with the processing of incongruent gestures was greater in the 'see' teaching group than in the 'do' teaching group. Thus, the performance of gestures seems to mitigate the negative impact that the use of gestures may have on the teaching of vocabulary in a foreign language.

Published
2024
Full Text
View/download PDF

7. Configuration of the magnetosome chain: a natural magnetic nanoarchitecture

Author

Orue, I., Marcano, L., Bender, P., García-Prieto, A., Valencia, S., Mawass, M. A., Gil-Cartón, D., Venero, D. Alba, Honecker, D., García-Arribas, A., Barquín, L. Fernández, Muela, A., and Fdez-Gubieda, M. L.

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

Magnetospirillum gryphiswaldense is a microorganism with the ability to biomineralize magnetite nanoparticles, called magnetosomes, and arrange them into a chain that behaves like a magnetic compass. Rather than straight lines, magnetosome chains are slightly bent, as evidenced by electron cryotomography. Our experimental and theoretical results suggest that due to the competition between the magnetocrystalline and shape anisotropies, the effective magnetic moment of individual magnetosomes is tilted out of the [111] crystallographic easy axis of magnetite. This tilt does not affect the direction of the chain net magnetic moment, which remains along the [111] axis, but explains the arrangement of magnetosomes in helical-like shaped chains. Indeed, we demonstrate that the chain shape can be reproduced by considering an interplay between the magnetic dipolar interactions between magnetosomes, ruled by the orientation of the magnetosome magnetic moment, and a lipid/protein-based mechanism, modeled as an elastic recovery force exerted on the magnetosomes.

Published
2024
Full Text
View/download PDF

8. Efficient anytime algorithms to solve the bi-objective Next Release Problem

Author

Domínguez-Ríos, Miguel Ángel, Chicano, Francisco, Alba, Enrique, del Águila, Isabel María, and del Sagrado, José

Subjects
Computer Science - Software Engineering
Abstract

The Next Release Problem consists in selecting a subset of requirements to develop in the next release of a software product. The selection should be done in a way that maximizes the satisfaction of the stakeholders while the development cost is minimized and the constraints of the requirements are fulfilled. Recent works have solved the problem using exact methods based on Integer Linear Programming. In practice, there is no need to compute all the efficient solutions of the problem; a well-spread set in the objective space is more convenient for the decision maker. The exact methods used in the past to find the complete Pareto front explore the objective space in a lexicographic order or use a weighted sum of the objectives to solve a single-objective problem, finding only supported solutions. In this work, we propose five new methods that maintain a well-spread set of solutions at any time during the search, so that the decision maker can stop the algorithm when a large enough set of solutions is found. The methods are called anytime due to this feature. They find both supported and non-supported solutions, and can complete the whole Pareto front if the time provided is long enough.

Published
2024
Full Text
View/download PDF

9. Using metaheuristics for the location of bicycle stations

Author

Cintrano, Christian, Chicano, Francisco, and Alba, Enrique

Subjects
Computer Science - Neural and Evolutionary Computing
Abstract

In this work, we solve the problem of finding the best locations to place stations for depositing/collecting shared bicycles. To do this, we model the problem as the p-median problem, that is a major existing localization problem in optimization. The p-median problem seeks to place a set of facilities (bicycle stations) in a way that minimizes the distance between a set of clients (citizens) and their closest facility (bike station). We have used a genetic algorithm, iterated local search, particle swarm optimization, simulated annealing, and variable neighbourhood search, to find the best locations for the bicycle stations and study their comparative advantages. We use irace to parameterize each algorithm automatically, to contribute with a methodology to fine-tune algorithms automatically. We have also studied different real data (distance and weights) from diverse open data sources from a real city, Malaga (Spain), hopefully leading to a final smart city application. We have compared our results with the implemented solution in Malaga. Finally, we have analyzed how we can use our proposal to improve the existing system in the city by adding more stations.

Published
2024
Full Text
View/download PDF

10. Evaluating Genetic Algorithms through the Approximability Hierarchy

Author

Muñoz, Alba and Rubio, Fernando

Subjects
Computer Science - Neural and Evolutionary Computing
Abstract

Optimization problems frequently appear in any scientific domain. Most of the times, the corresponding decision problem turns out to be NP-hard, and in these cases genetic algorithms are often used to obtain approximated solutions. However, the difficulty to approximate different NP-hard problems can vary a lot. In this paper, we analyze the usefulness of using genetic algorithms depending on the approximation class the problem belongs to. In particular, we use the standard approximability hierarchy, showing that genetic algorithms are especially useful for the most pessimistic classes of the hierarchy, Comment: 17 pages, 1 figures

Published
2024
Full Text
View/download PDF

13. Proposal for a social certification model for agriculture in Latin America aligned with the sustainable development goals

Author

de Alba Verduzco, Javier Eugenio García, Barbosa, Samuel Borges, Hernández, Blanca Catalina Ramírez, Moro, Leila Dal, Rodríguez, Luis Enrique Lomelí, Brandli, Luciana Londero, Deggau, André Borchardt, Peixoto, Maria Gabriela Mendonça, Navarro, Angélica Isabel García, Sehnem, Simone, dos Guimarães Alvim Nunes, Viviane, and de Andrade Guerra, José Baltazar Salgueirinho Osório

Published
2024
Full Text
View/download PDF

18. Efficacy and safety of colistin plus beta-lactams for bone and joint infection caused by fluoroquinolone-resistant gram-negative bacilli: a prospective multicenter study

Author

Mancheño-Losa, Mikel, Murillo, Oscar, Benavent, Eva, Sorlí, Luisa, Riera, Melchor, Cobo, Javier, Benito, Natividad, Morata, Laura, Ribera, Alba, Sobrino, Beatriz, Fernández-Sampedro, Marta, Múñez, Elena, Bahamonde, Alberto, Barbero, José María, del Toro, Mª Dolores, Villa, Jenifer, Rigo-Bonnin, Raül, Luque, Sonia, García-Luque, Isabel, Oliver, Antonio, Esteban, Jaime, and Lora-Tamayo, Jaime

Published
2024
Full Text
View/download PDF

23. Pseudodominance in RFC1-Spectrum Disorder

Author

Falcone, Grazia Maria Igea, Tessa, Alessandra, Arena, Ignazio Giuseppe, Barghigiani, Melissa, Migliorato, Alba, Incensi, Alex, Rodolico, Carmelo, Donadio, Vincenzo, Santorelli, Filippo Maria, and Musumeci, Olimpia

Published
2024
Full Text
View/download PDF

28. Multicenter external validation of prediction models for clinical outcomes after spinal fusion for lumbar degenerative disease

Author

Grob, Alexandra, Rohr, Jonas, Stumpo, Vittorio, Vieli, Moira, Ciobanu-Caraus, Olga, Ricciardi, Luca, Maldaner, Nicolai, Raco, Antonino, Miscusi, Massimo, Perna, Andrea, Proietti, Luca, Lofrese, Giorgio, Dughiero, Michele, Cultrera, Francesco, D’Andrea, Marcello, An, Seong Bae, Ha, Yoon, Amelot, Aymeric, Bedia Cadelo, Jorge, Viñuela-Prieto, Jose M., Gandía-González, Maria L., Girod, Pierre-Pascal, Lener, Sara, Kögl, Nikolaus, Abramovic, Anto, Laux, Christoph J., Farshad, Mazda, O’Riordan, Dave, Loibl, Markus, Galbusera, Fabio, Mannion, Anne F., Scerrati, Alba, De Bonis, Pasquale, Molliqaj, Granit, Tessitore, Enrico, Schröder, Marc L., Stienen, Martin N., Regli, Luca, Serra, Carlo, and Staartjes, Victor E.

Published
2024
Full Text
View/download PDF

30. ECLIM-SEHOP: how to develop a platform to conduct academic trials for childhood cancer

Author

Juan-Ribelles, Antonio, Bautista, Francisco, Cañete, Adela, Rubio-San-Simón, Alba, Alonso-Saladrigues, Anna, Hladun, Raquel, Rives, Susana, Dapena, Jose Luís, Fernández, Jose María, Lassaletta, Álvaro, Cruz, Ofelia, Ramírez-Villar, Gemma, Fuster, Jose Luís, de Heredia, Cristina Diaz, García-Ariza, Miguel, Quiroga, Eduardo, del Mar Andrés, María, Verdú-Amorós, Jaime, Molinés, Antonio, Herrero, Blanca, López, Mónica, Márquez, Catalina, Toboso, María, Lendínez, Frencisco, Sirvent, Jose Gómez, Tallón, María, Rodríguez, Guiomar, Acha, Tomás, Moreno, Lucas, and Fernández-Teijeiro, Ana

Published
2024
Full Text
View/download PDF

32. Reirradiation with radiosurgery or stereotactic fractionated radiotherapy in association with regorafenib in recurrent glioblastoma

Author

Gregucci, Fabiana, Di Guglielmo, Fiorella Cristina, Surgo, Alessia, Carbonara, Roberta, Laera, Letizia, Ciliberti, Maria Paola, Gentile, Maria Annunziata, Calbi, Roberto, Caliandro, Morena, Sasso, Nicola, Davi’, Valerio, Bonaparte, Ilaria, Fanelli, Vincenzo, Giraldi, David, Tortora, Romina, Internò, Valeria, Giuliani, Francesco, Surico, Giammarco, Signorelli, Francesco, Lombardi, Giuseppe, and Fiorentino, Alba

Published
2024
Full Text
View/download PDF

40. A mild increase in nutrient signaling to mTORC1 in mice leads to parenchymal damage, myeloid inflammation and shortened lifespan

Author

Ortega-Molina, Ana, Lebrero-Fernández, Cristina, Sanz, Alba, Calvo-Rubio, Miguel, Deleyto-Seldas, Nerea, de Prado-Rivas, Lucía, Plata-Gómez, Ana Belén, Fernández-Florido, Elena, González-García, Patricia, Vivas-García, Yurena, Sánchez García, Elena, Graña-Castro, Osvaldo, Price, Nathan L., Aroca-Crevillén, Alejandra, Caleiras, Eduardo, Monleón, Daniel, Borrás, Consuelo, Casanova-Acebes, María, de Cabo, Rafael, and Efeyan, Alejo

Published
2024
Full Text
View/download PDF

43. Determinant factors for first-line treatment choice and effectiveness in pediatric eosinophilic esophagitis: an analysis of the EUREOS EoE CONNECT registry

Author

Navarro, Pilar, Feo‐Ortega, Sara, Casabona‐Francés, Sergio, Gutiérrez‐Junquera, Carolina, Savarino, Edoardo V., Amorena, Edurne, Fernández‐Fernández, Sonia, Pérez‐Martínez, Isabel, Oliva, Salvatore, Barrio, Jesús, Masiques‐Mas, Maria Lluisa, Guardiola‐Arévalo, Antonio, Guagnozzi, Danila, Racca, Francesca, Betoré, Elena, Votto, Martina, Rodríguez-Sánchez, Alba, Barrio, Mónica Llorente, Blas‐Jhon, Leonardo, Sánchez‐Vegazo, Carlos Teruel, García-Morales, Natalia, Krarup, Anne Lund, Dainese, Raffaella, Martín‐Dominguez, Verónica, García-Díaz, Alejandro, Maniero, Daria, Santander, Cecilio, Arias, Ángel, Laserna‐Mendieta, Emilio J., and Lucendo, Alfredo J.

Published
2024
Full Text
View/download PDF

49. Influence of the medical treatment schedule in new diagnoses patients with heart failure and reduced ejection fraction

Author

Esteban-Fernández, Alberto, Gómez-Otero, Inés, López-Fernández, Silvia, Santamarta, Miguel Rodríguez, Pastor-Pérez, Francisco J., Fluvià-Brugués, Paula, Pérez-Rivera, José-Ángel, López López, Andrea, García-Pinilla, José Manuel, Palomas, Juan Luis Bonilla, Bonet, Luis Almenar, Cobo-Marcos, Marta, Mateo, Virgilio Martínez, Llergo, Javier Torres, Fernández, Vanesa Alonso, Vives, Cristina Goena, de Juan Bagudá, Javier, Benedicto, Alba Maestro, de Polavieja, José Ignacio Morgado, Solla-Ruiz, Itziar, Solé-González, Eduard, Cardona, Montserrat, Olaetxea, Javier Rekondo, Cortés, Carolina Ortiz, Dosantos, Victor Martínez, López, Antonio Gámez, Amao, Elvis, Sánchez, Borja Casas, Torres, Edgardo Alania, Carrillo, Víctor Gómez, García-Fuertes, Daniel, and Ridocci-Soriano, Francisco

Published
2024
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results