University of Extremadura
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Online mindfulness-based intervention for stress management in university students
No full textLas intervenciones basadas en mindfulness (IBM) constituyen una herramienta útil para manejar el estrés asociado a la vida académica del alumnado universitario. Actualmente, han empezado a implementarse en formato online, emergiendo como una alternativa eficaz y accesible en diferentes contextos. No obstante, hay pocas investigaciones sobre sus implicaciones en ambientes académicos. El objetivo del presente estudio fue examinar la efectividad de una IBM online para reducir los niveles de estrés académico y optimizar las estrategias de afrontamiento de estudiantes universitarios. Se realizó un diseño cuasiexperimental, con un grupo experimental (GE) y un grupo control (GC) con medición pretest-postest, utilizando como instrumento de medida dos escalas del Cuestionario de Estrés Académico (CEA; Cabanach et al., 2009), relacionadas con las respuestas psicofisiológicas de estrés (R-CEA) y las estrategias de afrontamiento (A-CEA). La muestra estuvo formada por 87 alumnos del primer curso de la Facultad de Ciencias del Deporte de la Universidad de Extremadura. 20 de ellos, se ofrecieron voluntariamente para formar parte del GE y participar en un programa de mindfulness online de ocho semanas.
Los resultados indicaron que el GE obtuvo puntuaciones promedio inferiores en las dimensiones del estrés académico y ligeramente superiores en la mayoría de las dimensiones de afrontamiento tras la intervención, en comparación con el GC. Sin embargo, las diferencias encontradas no alcanzaron significancia estadística. Estos hallazgos sugieren la necesidad de mejorar la planificación y el diseño de las intervenciones online, ofreciendo períodos de seguimiento más extensos para analizar sus efectos a largo plazo y comparar los resultados obtenidos en diferentes poblaciones y contextos.Mindfulness-based interventions (MBIs) are effective tools for managing the stress associated with university student’s academic lives. Recently, these interventions have begun to be implemented online, emerging as effective and accessible alternatives in various contexts. However, there is limited research on their implications in academic settings. The objective of this study was to examine the effectiveness of an online MBI in reducing academic stress levels and optimizing coping strategies among university students. A quasi-experimental design was employed, with an experimental group (EG) and a control group (CG) using a pretest-posttest measurement approach. Two scales from the Academic Stress Questionnaire (ASQ; Cabanach et al., 2009) were used as measurement instruments, focusing on psychophysiological stress responses (R-ASQ) and coping strategies (C-ASQ).
The sample consisted of 87 first-year students from the Faculty of Sport Sciences at the University of Extremadura. Twenty of these students volunteered to form the EG and participate in an eight-week online mindfulness program.
The results indicated that the EG had lower average scores in the dimensions of academic stress and slightly higher scores in most coping strategy dimensions after the intervention, compared to the CG. However, the observed differences did not reach statistical significance. These findings highlight the necessity of enhancing the planning and design of online interventions, providing extended follow-up periods to examine their long-term effects and compare the outcomes in various populations and contexts.peerReviewe
Access to the Habit in the Iberian Military Orders: A comparative study of the Castilian Order of Santiago and the Portuguese Order of Cristo
No full textEl presente trabajo estudia las diferencias existentes entre los procedimientos de concesión de hábitos de la Orden castellana de Santiago y la Orden portuguesa de Cristo durante los siglos XVII y XVIII. Tal disparidad se evidencia especialmente en los requisitos exigidos para la aceptación de los candidatos y en la importancia de la “economía de la merced” para cada una de las milicias. Se presenta, por tanto, un estudio que busca las desigualdades entre las principales milicias de las Coronas de Castilla y Portugal, respectivamente, en su nuevo papel honorífico instaurado en la etapa moderna.This paper studies the differences between the procedures for granting habits in the Castilian Or-der of Santiago and the Portuguese Order of Cristo during de 17th and 18th centuries. Such disparity is particularly evident in the requirements for the acceptance of candidates and the significance of the “Economía de la merced” for each of the militias. Therefore, this study aims to identify the inequalities between the main militias of the Crowns of Castile and Portugal, respectively, in their newly esblished honorary role during the modern era.peerReviewe
Conexión envejecimiento - reprogramación celular en fisiopatología hepática
No full textPrograma de doctorado en Biología molecular y celular, Biomedicina y BiotecnologíaEn la presente Tesis doctoral abordamos el papel del receptor Ahr en el envejecimiento y su implicación en la fisiopatología, utilizando como modelo experimental tejido hepático de ratones carentes de Ahr. Encontramos diferentes firmas genéticas que definen la ausencia del receptor de dioxina y validamos los marcadores de senescencia. Por otro lado, estudiamos la influencia de la edad en la reprogramación in vivo. En esta investigación, reprogramamos ratones OSKM-rtTA-Rosa26 Ahr +/+ y ratones OSKM-rtTA-Rosa26 Ahr -/-, aplicando un tratamiento de reprogramación parcial para inducir una expresión transitoria de factores Yamanaka. Mostramos cómo la reprogramación puede verse alterada por la ausencia de Ahr. Observamos diferencias en el patrón metabólico hepático, descubrimos perfiles transcripcionales de envejecimiento acelerado y detectamos alteración de la diversidad microbiana fecal. Finalmente, examinamos el potencial de Ahr en la fase de inicio de la reprogramación celular. La comprensión de estos procesos y futuros estudios, podrían ser claves para definir posibles tratamientos para las patologías del envejecimiento hepático.In this thesis we address the role of the Ahr receptor in aging and its implication in pathophysiology, using liver tissue from Ahr-deficient mice as an experimental model. We found different genetic signatures that define the absence of the dioxin receptor and validated senescence markers. On the other hand, we studied the influence of age on reprogramming in vivo. In this research, we reprogrammed OSKM-rtTA-Rosa26 Ahr +/+ mice and OSKM-rtTARosa26 Ahr -/- mice, applying a partial reprogramming treatment to induce a transient expression of Yamanaka factors. We show how reprogramming can be altered by the absence of Ahr. We observed differences in the hepatic metabolic pattern, uncovered transcriptional profiles of accelerated aging and detected altered faecal microbial diversity. Finally, we examined the potential of Ahr in the initiation phase of cellular reprogramming. Understanding these processes and future studies could be key to defining possible treatments for liver aging pathologies.- Ayuda para contratos predoctorales para la formación de doctores FPI (PRE2018-085587) del Ministerio de Ciencia, Innovación y Universidades.
- Financiación del proyecto “Mecanismos que regulan la interacción senescencia-reprogramación en carcinoma hepatocelular: implicación en regeneración hepática (SENREPRO) del Plan Estatal de Investigación Científica y Técnica y de Innovación
2017-2020.
- Financiación del proyecto “Regulación de la reprogramación y la senescencia en el carcinoma hepatocelular por el receptor AHR: implicaciones clínicas” (Referencia IB20014) dentro del plan de ayudas destinadas a la realización de proyectos de investigación en los centros públicos de I+D+i de la Comunidad Autónoma de Extremadura. Cofinanciada por la Consejería de Economía, Competitividad e Innovación de la Junta de Extremadura y el Fondo Europeo de Desarrollo Regional (FEDER)
Excess secondary sludge reuse by H2O2 thermal dehydration
No full textThe excess of activated sludge generated in municipal wastewater treatment plants constitutes one of the challenging problems facing modern society. The high-water content of this waste makes difficult the transport, disposal, and management of these solids. In this work, activated sludge excess from a secondary clarifier has been dehydrated by means of a combination of temperature and hydrogen peroxide treatment. Three main operating variables have been considered to affect sludge dewaterability and filterability. Temperature (120–180 °C), hydrogen peroxide dose (0.01–0.03 M), and treatment time (20–60 min) influence have been assessed by completing a 15-run Box Behnken experimental design. Different output variables (water content, resistance to filtration, sedimentation volumetric index, extracellular polymeric substances, etc.) have been monitored. Generally, temperature seems to be the most influencing parameter to obtain a dehydrated sludge with acceptable management/disposal characteristics (sludge volume reduction and filterability). In line with the concept of circular economy, an attempt has been conducted to obtain a sustainable biosorbent from the dehydrated sludge generated in the previous stage. Optimum conditions of carbonization and activation revealed that the solid obtained at 400 °C by using ammonium nitrate as activation agent was the most efficient absorbent to eliminate some model compounds from water (namely, phenol, ofloxacin, and diuron); however, a clear improvement margin in the synthesis is foreseen.Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. Economic support to Junta de Extremadura and European Feder funds through projects IB20042 and TA18037. Ana Udaondo has received research support by secretaria general de la Consejería de Educación y Empleo de la Junta de Extremadura y EXMAN S.L. (TE-0041–19).peerReviewe
Dual vocational training students in Andalusia: Perspectives and challenges
No full textThe implementation of the dual vocational training policy establishes horizontal training between schools and the labour market, contributes to educational continuity and is an effective
measure against early school leaving. In addition, it has a link with the business sector that enables
labour integration and also participates in the training and qualification of students. To approach it,
we start from a historical overview of education, where we analyse the different laws passed in recent
decades and investigate dual vocational training as an effective policy for training for employment
and training of skills, abilities and competences necessary for the acquisition of a job. To this end, we
present a study in which we make visible, through interviews, the perspective of students in relation
to vocational training in the autonomous community of Andalusia. The majority of those interviewed
gave a positive assessment of these studies. Moreover, the interviews show how this educational
policy has a positive impact on the labour market insertion of the participants.This research was funded by the Ministry of Science and Innovation of the Government of Spain; grant number RTI2018-101660-B-100.peerReviewe
Graphic culture in sacred spaces: considerations about a drediscovered set of grisaille in the limits of the old diocese of Cartagena
No full textEl presente estudio profundiza en las fuentes visuales que inspiraron las decoraciones murales realizadas en los espacios sacros de la antigua diócesis de Cartagena durante la Edad Moderna. Muchas de esas pinturas se encuentran perdidas bajo repintes, mal conservadas o totalmente desaparecidas. Por ello, aprovecharemos la reciente restauración de unas pinturas murales ejecutadas mediante la técnica de la grisalla en la sacristía de la iglesia de la Asunción de Yeste. Analizaremos la cultura artística que permitió a estos autores configurar escenas en plena consonancia con los modelos artísticos que se ejecutaban en los grandes centros del arte del ámbito diocesano. Asimismo, queremos conectar nuestro estudio con las fuentes gráficas que inspiraron a aquellos artífices.The aim of this research is to look at in the visual sources that inspire the mural decorations made in the sacred spaces of Antique Cartagena’s diocese during the Early Modern Age. More of these paintings are occulted under repaints, poorly maintained, or completely disappeared. We will take the opportunity the restoration of a wall paint-ings made with the grisaille technique in the sacristy of the Assumption Church of Yeste (Albacete). Thus, the main objective of the research is to analyse the artistic culture that allow these authors to configure scenes in full harmony with the artistic models executed in the great artistic centres of the diocesan area. Likewise, we link our analysis to the graphic sources that inspired these artists.La presente contribución es fruto de los trabajos de investigación y análisis de elementos gráficos y pintores decoradores que estamos llevando a cabo dentro de los proyectos Gemelo digital interactivo e inteligente para la documentación, análisis y divulgación de la azulejería de la basílica del Prado de Talavera de la Reina (PID2022-139696NB-I00), proyecto competitivo cofinanciado por el Ministerio de Ciencia, Innovación y Universidades, la Agencia Estatal de Investigación y por Fondos FEDER U.E; y La azulejería de la Basílica del Prado de Talavera de la Reina: un gemelo digital interactivo e inteligente (SBPLY/23/180225/000074) financiado por el Fondo Europeo de Desarrollo Regional y la Agencia de Investigación e Innovación de Castilla-La Mancha. Asimismo, es también resultado de las actividades de investigación desempeñadas dentro del grupo de I+D de la Universidad de Extremadura Patrimonio&Arte. Unidad de conservación del patrimonio artístico, dirigido por la profesora Pilar Mogollón Cano-Cortés.peerReviewe
Classes of homothetic convex sets
No full textThis is a survey of known results and still open problems on characteristic properties of classes of homothetic convex sets in the n-dimensional Euclidean space. These properties are formulated in terms of orthogonal projections, plane sections, homothety classes, Choquet simplices, and homothetic tilings and partitionspeerReviewe
Visibilizing and managing paradox: Redefining the role of non-executive directors
No full textPublicado en: Corporate Governance, Vol. 24 No. 5, pp. 1156-1170. Con DOI: https://doi.org/10.1108/CG-01-2023-0038Purpose:
This paper aims to discuss the work of non-executive directors (NEDs) as inherently paradoxical. Paradox refers to the presence of persistent contradictions between interdependent forces. Those persistent tensions are explored, and approaches are indicated to stimulate the adaptive use of paradoxes as forces of innovation and renewal.
Design/methodology/approach:
This conceptual approach can be read as an invitation for corporate governance scholars to embrace the logic of paradox to expand the understanding of this topic. Paradox is not conceptualized as an alternative to dominant structural views, including board composition, but as a complementary conceptual perspective, a meta-theoretical lens to shed light on the tensions inherent to governance.
Findings:
The authors propose that paradox theory offers a fresh conceptual lens to study the role of NEDs. This approach may help NEDs to turn tensions and paradoxes visible to develop a rich understanding of their work, as well as helping them navigate the complexities of organizing, a process rich in inherent paradoxicality.
Originality/value:
Organizational paradox theory is a bourgeoning field of study, but the conceptual lens of paradox has still been underexplored in the study of corporate governance.This work was funded by Fundação para a Ciência e a Tecnologia (UID/ECO/00124/2019, UIDB/00124/2020,
UID/GES/00731/2020, UID/GES/00315/2020 and Social Sciences DataLab, PINFRA/22209/2016), POR Lisboa and POR Norte (Social Sciences DataLab, PINFRA/22209/2016
Humor in times of anger. Understanding "humor gráfico español del siglo XX" for a contemporary history class in black and white
No full textEl Humor gráfico español del siglo XX apareció en 1970 formando parte de una colección de 100 títulos, Libros RTV, que también se divulgó como “Biblioteca Básica Salvat”; en esta antología fueron incluidos 96 dibujantes, de los que algunos ya habían trabajado en el siglo anterior. Esta selección vio la luz solo cuatro años después de ser aprobada la “Ley de prensa e imprenta”, que señalaba cierta apertura del régimen franquista; pero, aun así, las autoridades hicieron uso del dirigismo cultural para controlar los contenidos de las ediciones o, como en este caso, autorizaron una lista de obras cuya lectura no iba a reportar problema político alguno. Y esto es lo que se consiguió también en el interior del libro del que tratamos.Humor gráfico español del siglo XX appeared in 1970 as part of a collection of 100 titles, RTV Books, which was also published as the “Salvat Basic Library”; 96 cartoonists were included in this anthology, some of whom had already worked in the previous century. This selection came to light only four years after the “Press and Printing Law” was approved, which signaled a certain openness of the Franco regime; But,
even so, the authorities made use of cultural dirigisme to control the contents of the editions or, as in this case, they authorized a list of works whose reading would not cause any political problems. And this is what was also achieved within the book we are discussing.Esta publicación se ha realizado gracias al apoyo del Grupo de investigación en Didáctica de las
Ciencias Sociales ARGOS-IUCA (S50_23R) del Gobierno de Aragón y es parte del proyecto I+D+i
PID2023-115288RB-I00: Competencias Digitales, procesos de aprendizaje y toma de conciencia sobre el
patrimonio cultural: educación de calidad para ciudades y comunidades sostenibles, financiado por MICIU/
AEI/10.13039/501100011033/.peerReviewe
Retrospective Study of the Epidemiological–Clinical Characteristics of Burns Treated in a Hospital Emergency Service (2018–2022)
No full textBackground: Burns are a common and severe medical emergency requiring immediate specialized care to minimize damage and prevent complications. Burn severity depends on depth, extent, and location, with more complex care needed for burns on critical areas or extensive burns. Nursing is essential in burn management, providing immediate care, adapting treatments, managing pain, preventing infections, and offering emotional support for recovery. The study aims to analyse the epidemiological and clinical characteristics of burns treated at the Hospital Emergency Department of the Hospital Complex of Cáceres (Spain) from January 2018 to December 2022. It looks at factors like gender, age, hospital stay duration, emergency type (paediatric or adult), main diagnosis, skin thickness, burn degree, affected body areas, percentage of body surface area burned, and treatment types. It also investigates how treatment varies by gender, age, skin thickness, and burn severity. The relevance of this research lies in the fact that periodic epidemiological studies are essential to monitor changes in diseases, evaluate the effectiveness of interventions, detect outbreaks quickly, update knowledge on risk factors, and guide health policy decisions. This ensures an adapted and effective response to the needs of the population. Methods: Retrospective, observational study that analysed burn cases treated at the Hospital Complex of Cáceres (Spain) 2018–2022. Inclusion criteria were based on ICD-10 codes for burns, excluding severe cases not treated in this service. Data were analysed using descriptive statistics, Student’s t-tests, Chi-square tests, and ANOVA. Results: 220 patients surveyed, with a mean age of 47 years and 60.9% male. Most burns (95.5%) affected the external body surface, with a mean hospital stay of 7.86 days. Medical treatment was provided to 75.5% of patients, and 24.5% required surgical intervention. Significant differences in treatment procedures were observed according to age, skin thickness, and burn degree. Older patients had more procedures and longer hospital stays. Excision and transfer procedures were more common in full-thickness and severe burns. Conclusions: The findings align with previous research on burn demographics and treatment approaches. Treatment differences by age and burn severity highlight the need for tailored interventions. The study underscores the importance of comprehensive burn management, including psychological support for improved long-term outcomes. Further research could explore the impact of socio-economic factors on burn incidence and treatment. This study was not registered.peerReviewe