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205 results on '"Béjar, J."'

1. Sleep quality in individuals with post-COVID-19 condition: Relation with emotional, cognitive and functional variables

Author

Arauzo, Vanesa, Bernia, Jose A., Balague-Marmaña, Marta, Valles-Pauls, Berta, Gonzalez-Aguado, Ester, Tayó-Juli, Carme, Forcadell-Ferreres, Eva, Reverte-Vilarroya, Silvia, Forné, Susanna, Bartes-Plans, Anna, Muñoz-Padros, Jordina, Muñoz-Moreno, Jose A., Prats-Paris, Anna, Rico, Inmaculada, Sabé, Nuria, Almeria, Marta, Casas, Laura, Ciudad, Maria José, Ferré, Anna, Garzon, Tamar, Cullell, Marta, Vega, Sonia, Alsina, Sílvia, Maldonado-Belmonte, Maria J., Vazquez-Rivera, Susana, Baillès, Eva, Navarro, Sandra, Carnes-Vendrell, A., Piñol-Ripoll, G., Ariza, M., Cano, N., Segura, B., Junque, C., Béjar, J., Barrue, C., and Garolera, M.

Published
2024
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2. A Visual Embedding for the Unsupervised Extraction of Abstract Semantics

Author

Garcia-Gasulla, D., Béjar, J., Cortés, U., Ayguadé, E., Labarta, J., Suzumura, T., and Chen, R.

Subjects
Computer Science - Computer Vision and Pattern Recognition, Computer Science - Learning, Computer Science - Neural and Evolutionary Computing
Abstract

Vector-space word representations obtained from neural network models have been shown to enable semantic operations based on vector arithmetic. In this paper, we explore the existence of similar information on vector representations of images. For that purpose we define a methodology to obtain large, sparse vector representations of image classes, and generate vectors through the state-of-the-art deep learning architecture GoogLeNet for 20K images obtained from ImageNet. We first evaluate the resultant vector-space semantics through its correlation with WordNet distances, and find vector distances to be strongly correlated with linguistic semantics. We then explore the location of images within the vector space, finding elements close in WordNet to be clustered together, regardless of significant visual variances (e.g. 118 dog types). More surprisingly, we find that the space unsupervisedly separates complex classes without prior knowledge (e.g. living things). Afterwards, we consider vector arithmetics. Although we are unable to obtain meaningful results on this regard, we discuss the various problem we encountered, and how we consider to solve them. Finally, we discuss the impact of our research for cognitive systems, focusing on the role of the architecture being used., Comment: 14 pages, 5 figures, accepted at Cognitive Systems Research

Published
2015

3. Poor sleep quality may trigger cognitive deficits after recovery from COVID-19.

Author

Carnes-Vendrell, A., Piñol-Ripoll, G., Ariza, M., Cano, N., Segura, B., Junque, C., Béjar, J., Barrue, C., and Garolera, M.

Subjects
SLEEP quality, SLEEP interruptions, MEMORY disorders, SHORT-term memory, VERBAL memory, VISUAL memory, SLEEP
Abstract

Objective: In the present study, we aimed to assess the cognition of post-COVID-19 condition (PCC) participants in relation to their subjective sleep quality (Pittsburgh Sleep Quality Index, PSQI) and to analyse possible moderators of this effect, such as quality of life (European Quality of Life-5 Dimensions, EQ-5D), fatigue (Chadler Fatigue Questionnaire, CFQ), cognitive reserve (Cognitive Reserve Questionnaire, CRC), and subjective cognitive complaints (Memory Failures of Everyday Questionnaire, MFE-30). Methods: We included 373 individuals with PCC and 126 healthy controls (HCs) from the NAUTILUS Project (NCT05307549 and NCT05307575) who were assessed with a comprehensive neuropsychological battery and various questionnaires. Results: We found that PCC participants with poor sleep quality had a 4.3% greater risk of immediate verbal memory deficits than those with good sleep quality, as indicated by the greater odds ratio (OR) of 1.043 and confidence interval (CI) of 1.023-1.063. Additionally, their risk of immediate verbal memory disorders was multiplied by 2.4 when their EQ-5D score was low (OR 0.33; CI 0.145-0.748), and they had a lower risk of delayed visual memory deficits with a greater CRC (OR 0.963; CI 0.929-0.999). With respect to processing speed, PCC participants with poor sleep quality had a 6.7% greater risk of deficits as the MFE increased (OR 1.059; CI 1.024-1.096), and the risk of slowed processing speed tripled with a lower EQ-5D (OR 0.021; CI 0.003-0.141). Conclusion: These results indicate that poor subjective sleep quality is a potential trigger for cognitive deficits. Therapeutic strategies to maximize sleep quality could include reducing sleep disturbances and perhaps cognitive impairment in PCC individuals. [ABSTRACT FROM AUTHOR]

Published
2024
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7. Chapter Two - Stress response and adaptation mechanisms in Kluyveromyces marxianus.

Author

Flores-Cosío, G., García-Béjar, J. A., Sandoval-Nuñez, D., and Amaya-Delgado, L.

Abstract

Kluyveromyces marxianus is a non-Saccharomyces yeast that has gained importance due to its great potential to be used in the food and biotechnology industries. In general, K. marxianus is a known yeast for its ability to assimilate hexoses and pentoses; even this yeast can grow in disaccharides such as sucrose and lactose and polysaccharides such as agave fructans. Otherwise, K. marxianus is an excellent microorganism to produce metabolites of biotechnological interest, such as enzymes, ethanol, aroma compounds, organic acids, and single-cell proteins. However, several studies highlighted the metabolic trait variations among the K. marxianus strains, suggesting genetic diversity within the species that determines its metabolic functions; this diversity can be attributed to its high adaptation capacity against stressful environments. The outstanding metabolic characteristics of K. marxianus have motivated this yeast to be a study model to evaluate its easy adaptability to several environments. This chapter will discuss overview characteristics and applications of K. marxianus and recent insights into the stress response and adaptation mechanisms used by this non-Saccharomyces yeast. [ABSTRACT FROM AUTHOR]

Published
2024
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17. Cellular and molecular immune responses of the sea bass ( Dicentrarchus labrax) experimentally infected with betanodavirus

Author

Scapigliati, G., Buonocore, F., Randelli, E., Casani, D., Meloni, S., Zarletti, G., Tiberi, M., Pietretti, D., Boschi, I., Manchado, M., Martin-Antonio, B., Jimenez-Cantizano, R., Bovo, G., Borghesan, F., Lorenzen, N., Einer-Jensen, K., Adams, S., Thompson, K., Alonso, C., Bejar, J., Cano, I., Borrego, J.J., and Alvarez, M.C.

Published
2010
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19. Simultaneous photometric and CARMENES spectroscopic monitoring of fast-rotating M dwarf GJ 3270

Author

E. N. Johnson, S. Czesla, B. Fuhrmeister, P. Schöfer, Y. Shan, C. Cardona Guillén, A. Reiners, S. V. Jeffers, S. Lalitha, R. Luque, E. Rodríguez, V. J. S. Béjar, J. A. Caballero, L. Tal-Or, M. Zechmeister, I. Ribas, P. J. Amado, A. Quirrenbach, M. Cortés-Contreras, S. Dreizler, A. Fukui, M. J. López-González, A. P. Hatzes, Th. Henning, A. Kaminski, M. Kürster, M. Lafarga, D. Montes, J. C.

Published
2021
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23. The CARMENES search for exoplanets around M dwarfs

Author

G. Nowak, R. Luque, H. Parviainen, E. Pallé, K. Molaverdikhani, V. J. S. Béjar, J. Lillo-Box, C. Rodríguez-López, J. A. Caballero, M. Zechmeister, V. M. Passegger, C. Cifuentes, A. Schweitzer, N. Narita, B. Cale, N. Espinoza, F. Murgas, D. Hidalgo, M. R. Zapatero Osorio, F. J. Pozuelos, F. J. Aceituno, P. J. Amado, K. Barkaoui, D. Barrado, F. F. Bauer, Z. Benkhaldoun, D. A. Caldwell, N. Casasa

Published
2020
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28. Identification of an interferon-stimulated gene, isg15, involved in host immune defense against viral infections in gilthead seabream (Sparus aurata L.)

Author

Alvarez-Torres, D., Gómez-Abellán, Victoria, Arizcun-Arizcun, Marta, García-Rosado, E., Béjar, J., Sepulcre, Maria Pilar, Alvarez-Torres, D., Gómez-Abellán, Victoria, Arizcun-Arizcun, Marta, García-Rosado, E., Béjar, J., and Sepulcre, Maria Pilar

Abstract

Interferons (IFNs) play a key role in the innate immunity of vertebrates against viral infections by inducing hundreds of IFN-stimulated genes (ISGs), such as isg15. Isg15 is an ubiquitin-like protein, which can conjugate cellular and viral proteins in a process called ISGylation, although it can also act as a cytokine-like protein. Gilthead seabream (Sparus aurata L.) is an important asymptomatic carrier of viral haemorrhagic septicaemia virus (VHSV) and nodavirus, representing a threat to other co-cultivated susceptible species. In order to better understand virus-host interactions in this fish species, this study addresses the identification and molecular characterization of seabream isg15 (sb-isg15). In addition, the modulation of transcript levels of sb-isg15 was analysed in SAF-1 cells and seabream acidophilic granulocytes (AGs) stimulated in vitro with different pathogenassociated molecular patterns (PAMPs) or inoculated with VHSV and striped jack nervous necrosis virus (SJNNV). The full-length cDNA of sb-isg15 gene, encoding a predicted protein of 155 amino acids, was identified and seen to share the same characteristics as other fish and mammalian isg15 genes. Here we report the clear induction of sb-isg15 transcript levels in SAF-1 cells and AGs stimulated with toll-like receptor (TLR) ligands, such as polyinosinic:polycytidylic acid (poly I:C) or genomic DNA from Vibrio anguillarum (VaDNA), respectively. Furthermore, VHSV and SJNNV inoculation induced a significant degree of sb-isg15 transcription in SAF-1 cells and AGs. However, the relative levels of viral RNA transcription showed that SJNNV replication seems to be more efficient than VHSV in both in vitro systems. Interestingly, sb-isg15 transcript induction elicited by VaDNA was reduced in VHSV- and SJNNV-inoculated AGs, suggesting an interference prompted by the viruses against the type I IFN system. Taken together, these findings support the use of seabream AGs as a valuable experimental system to s

Published
2017

29. Sleep quality in individuals with post-COVID-19 condition: Relation with emotional, cognitive and functional variables

Author

Carnes-Vendrell, A., Piñol-Ripoll, G., Ariza, M., Cano, N., Segura, B., Junque, C., Béjar, J., Barrue, C., Arauzo, Vanesa, Bernia, Jose A., Balague-Marmaña, Marta, Valles-Pauls, Berta, Gonzalez-Aguado, Ester, Tayó-Juli, Carme, Forcadell-Ferreres, Eva, Reverte-Vilarroya, Silvia, Forné, Susanna, Bartes-Plans, Anna, Muñoz-Padros, Jordina, Muñoz-Moreno, Jose A., Prats-Paris, Anna, Rico, Inmaculada, Sabé, Nuria, Almeria, Marta, Casas, Laura, Ciudad, Maria José, Ferré, Anna, Garzon, Tamar, Cullell, Marta, Vega, Sonia, Alsina, Sílvia, Maldonado-Belmonte, Maria J., Vazquez-Rivera, Susana, Baillès, Eva, Navarro, Sandra, and Garolera, M.

Abstract

The study aimed to assess sleep quality in PCC patients and its predictors by analysing its relationship with emotional, cognitive and functional variables, as well as possible differences based on COVID-19 severity. We included 368 individuals with PCC and 123 healthy controls (HCs) from the NAUTILUS Project (NCT05307549 and NCT05307575). We assessed sleep quality (Pittsburgh Sleep Quality Index, PSQI), anxiety (Generalized Anxiety Disorder, GAD-7), depression (Patient Health Questionnaire, PHQ-9), global cognition (Montreal Cognitive Assessment, MoCA), everyday memory failures (Memory Failures of Everyday Questionnaire, MFE-30), fatigue (Chadler Fatigue Questionnaire, CFQ), quality of life (European Quality of Life-5 Dimensions, EQ-5D), and physical activity levels (International Physical Activity Questionnaire, IPAQ). 203 were nonhospitalized, 83 were hospitalized and 82 were admitted to the intensive care unit (ICU). We found statistically significant differences in the PSQI total score between the PCC and HC groups (p < 0.0001), but there were no differences among the PCC groups. In the multiple linear regressions, the PHQ-9 score was a predictor of poor sleep quality for mild PCC patients (p = 0.003); GAD-7 (p = 0.032) and EQ-5D (p = 0.011) scores were predictors of poor sleep quality in the hospitalized PCC group; and GAD-7 (p = 0.045) and IPAQ (p = 0.005) scores were predictors of poor sleep quality in the group of ICU-PCC. These results indicate that worse sleep quality is related to higher levels of depression and anxiety, worse quality of life and less physical activity. Therapeutic strategies should focus on these factors to have a positive impact on the quality of sleep.

Published
2024
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40. Bibliografia

Author

J. A. R., S. R. G., Béjar, J., García, J. M., Cano, F., Ríos, S., and Melendreras, R.

Published
1971
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42. Bibliografia

Author

S. R., Pro, R., Francés, M., Vilablana, J. P., Béjar, J., and Romero, J. A.

Published
1968
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43. Bibliografia

Author

Pro, Rafael, Girón, F. J., S. R. G., Béjar, J., Melendreras, R., Quesada, V., García, Miguel Sánchez, Gil, Pedro, Almaraz, Juan C., Pérez, Ma. del Carmen, and Dávila, Miguel Martín

Published
1973
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49. Participatory process management

Author

Krywkow, J., Hare, M., Sánchez-Marré M., Béjar J., Comas J., Rizzoli A.E., Guariso G., and Water Management

Subjects
METIS-248966
Abstract

Although the process of public and stakeholder participation continues to be intensivelyinvestigated and discussed in academic circles, the implementation of participatory methods inpractice remains problematic. This can be attributed to the lack of knowledge transfer on the onehand, and the general underestimation of participatory approaches in planning processes on theother.A possible solution - participatory processmanagement - is introduced in this article. Participatoryprocess management means that all participatory activities are embedded in the overall planningactivities of a project. The most significant criteria for a participatory process are identified as’objectives’, ’constraints’ and ’process’which together forma framework for combining generallyapplicablemethodswith local constraints and the objectives of a project. Themain elements of theparticipatory management framework introduced here are levels and classes of participation and ageneric process scheme includingmonitoring and evaluation of participatory processes. This workis based upon long-term experiences of consultants and scientists. However, the insights fromthe InterReg project TRUST are particularly valuable and confirm the hypotheses that differentwater management projects are comparable in terms of their participatory process performance.The participatory management framework is a step forward in closing the gap between scientificknowledge about participatory methods and their applicability in practice.

Published
2008

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