University of Malaga

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    35436 research outputs found

    Validation in Spanish of the GAIN instrument for its application in caregivers of patients with multimorbidity in the home environment

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    Objetivo Validación de la escala de ganancias GAIN en el cuidado informal disponible en español, para extenderla a una versión para cuidadores de pacientes con multimorbilidad en el domicilio. Método Estudio de validación psicométrico en cuidadores familiares de personas con multimorbilidad en atención domiciliaria. Se procedió a la validación de contenido mediante panel de expertos y técnica Delphi y posterior validación empírica en una muestra de cuidadores familiares de pacientes con multimorbilidad en atención domiciliaria. Resultados Fase I. Se modificaron 3 de los 10 ítems para especificar la población de estudio. Fase II. Un total de 227 sujetos, con una edad mediana de 84 años en pacientes y 59 años en cuidadores familiares. El 78,9% de los cuidadores eran mujeres. El análisis de la fiabilidad ofreció valores de omega de McDonald de 0,82, con una correlación media inter-ítem de 0,41. La fiabilidad test-retest ofreció un valor de 0,95. La estructura bifactorial obtuvo un buen ajuste: RMSEA de 0,08 (IC90% 0,06 a 0,11), TLI 0,88, explicando un 40,6% de la varianza. El instrumento mostró capacidad discriminativa entre cuidadores en función de la sobrecarga (p < 0,001). Conclusiones La escala GAIN es un instrumento válido y fiable para la medición de las ganancias de los cuidadores familiares de personas con multimorbilidad en atención domiciliaria. Es de fácil uso y permite comprender qué factores potenciar en los cuidadores para preservar su resiliencia durante el proceso.Funding for open access charge: Universidad de Málaga / CBU

    Photobiological and Biochemical Characterization of Conchocelis and Blade Phases from Porphyra linearis (Rhodophyta, Bangiales)

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    Porphyra specimens are red macroalgae with significant economic importance for food and pharmaceutical industries due to their physiological activities resulting from their bioactive compounds (BACs). Due to its economic importance, this research aimed to characterize the photosynthetic and biochemical aspects of the conchocelis and blade phases of Porphyra linearis to understand and help improve production of this algae. The algae were cultured for 7 days with nutrients for blade phase measurements, while another portion was cultured without nutrients for 21 days to release carpospores, which were cultivated for 4 months. For both phases, the content of BACs (chlorophyll a, carotenoids, phycobiliproteins, phenols, carbohydrates, proteins, mycosporine-like amino acids), antioxidant activity, and photosynthetic parameters were analyzed. Most of the parameters showed the blade phase had better results than conchocelis, except for carbohydrates. Phycobiliproteins showed no statistical differences between the phases. These findings highlight that conchocelis is not a good BACs source compared to the blade phase, but it is a crucial phase in the life cycle of Porphyra. Understanding the key parameters for maintaining the cultivation of conchocelis stocks for the development of the blade phase is a way to produce macroscopic biomass of this economically important algae throughout the year.NUVAPY-BLU

    María Magdalena: La imagen barroca de la penitencia en el arte europeo de los siglos XVII y XVIII.

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    La imagen de María Magdalena penitente, más allá del cariz sensual que se desprende de las muchas representaciones llevadas a cabo, especialmente, durante la Edad Moderna, responde a un modelo configurado para la lucha contra el pecado y la afirmación del sacramento de la penitencia. Y es el interés por descubrir de dónde surge esa imagen y todo lo que ello conllevó, el motivo de esta Tesis Doctoral. Este trabajo de investigación pretende analizar la figura bíblica de María Magdalena desde la perspectiva de la iconografía de la penitencia, a partir de las obras literarias que se han dado desde la Edad Antigua hasta la Edad Moderna y de las obras artísticas de los siglos XVII y XVIII, acorde al sentido impreso por el Concilio de Trento a este sacramento en el contexto de la Reforma Católica del siglo XVI. Es decir, como la literatura, tanto religiosa como artística, ha creado una imagen de la pecadora arrepentida de sus pecados, que se ha ido adaptando a la estética artística de cada momento; pero, manteniendo una serie de elementos que han hecho de ella el icono de uno de los pecados capitales que los propios escritos bíblicos, sin embargo, nunca respaldaron. El desarrollo de la tesis se ha dividido dos grandes capítulos. En el primero, María Magdalena y su construcción iconográfica, se han reunido y analizado las fuentes que han permitido perfilar la identidad de María Magdalena a partir de las fuentes bíblicas; es decir, las que dieron lugar a la imagen que de ella se forjó tanto en la Iglesia oriental como en la occidental, mediante las Sagradas Escrituras; y cómo, a partir de las ideas que se difundieron en Occidente, los literatos religiosos y artistas configuraron mediante sermones, hagiografías, literatura religiosa y artística, etc., los estadios de la vida y de la conversión de una mujer fruto de la mezcolanza con otras mujeres bíblicas

    The innovation effects of engaged actors in Open Platform Ecosystems

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    Capítulo de investigación. Política de acceso abierto: https://www.springernature.com/gp/open-science/policies/book-policiesThis chapter explores how innovation emerges within open platform ecosystems, using the Service-Dominant Logic (SDL) as a theoretical foundation and focusing on rewards-based crowdfunding as a practical case. Open platforms democratize innovation by enabling diverse actors to interact and integrate resources beyond firm boundaries. Innovation is no longer seen as serendipitous but rather as the outcome of deliberate engagement and resource exchange. The chapter introduces the “Crowdfunding Ecosystem Resource-Density Management Model,” which links actor engagement and resource density to ecosystem innovation capacity. Actor engagement—understood as both the willingness and activity of integrating resources—drives the system’s potential for emergence and transformation. The model presents four strategic scenarios based on combinations of high or low engagement and resource density: increase resources, maintain innovation, pivot the business model, or enhance engagement. The work contributes to theory by clarifying how ecosystems self-adjust and evolve through recursive interactions. It also offers practical guidance for designing strategies in dynamic, digital, multi-actor environments. Future research is encouraged to further explore actor engagement, resource liquefaction, and innovation processes in open and complex contexts like crowdfunding platforms

    Commutative algebras with one-dimensional square

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    In this paper, we classify and study commutative algebras having a one-dimensional square. In finite dimension (see Theorem 3.9) besides some cases (which are all associative and nilpotent with nilpotency index 3), the algebras with zero annihilator are either of symplectic type (appearing only in characteristic 2), or evolution algebras. In infinite dimension, ruling out the associative case, we prove that our algebras are either of symplectic type or evolution algebras provided some technical conditions are satisfied (see Theorem 3.12). Our main tool is the theory of inner product spaces and quadratic forms. More precisely, if A denotes an evolution algebra with dim (A2)=1 and a a generator of A2, then A admits an inner product {·, · } such that the product of A is given by xy = {x, y}a. There are three classes to consider: (1) a ∈ Ann(A); (2) a ∉ Ann(A) and a is isotropic relative to {·, ·}; (3) a ∉ Ann(A) and a is anisotropic relative to {·, ·} The isomorphism problem among these objects is investigated. For some of these algebras, we have also determined the existence of faithful associative representations in certain Clifford algebras.Funding for open access charge: Universidad de Málaga / CBU

    Ciencia Abierta. Open Access

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    Presentación de apoyo a las sesión online del "Curso avanzado sobre recursos de información y publicación científica", dirigido a estudiantes de doctorado

    Academic Search Ultimate - 2025

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    Tutorial sobre el uso de la base de datos Academic Search Ultimate como recurso para la búsqueda de información

    Transformaciones sociales, mujer e identidad en la evolución de la fricativa velar sorda /x/ en los corpus de PRESEEA-Málaga

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    El objeto principal del trabajo que se presenta es mostrar los principales resultados obtenidos al comparar la distribución de los diferentes alófonos de la consonante fricativa velar sorda /x/ del español andaluz, especialmente entre hablantes de género femenino, en un conjunto de corpus obtenidos en diferentes intervalos temporales en la ciudad de Málaga. El fin último es observar si se han producido cambios significativos a lo largo del tiempo y si se pueden explicar a partir de las recientes transformaciones sociales que han afectado al papel desempeñado por las mujeres del siglo XXI. La propuesta se relaciona, por tanto, no solo con el proyecto PRESEEA (Moreno-Fernández 1993), sino también con el proyecto MAYHO: “Mujer Ayer y Hoy. Transformaciones sociales y su efecto en el cambio lingüístico en Andalucía”.Proyecto de investigación Mujer Ayer y Hoy: Transformaciones sociales y su efecto en el cambio lingüístico en Andalucía (MAYHO). Plan Propio de la Universidad de Málaga (PPRO-B2-2023-03)Universidad de Málag

    Metabolite-Driven Modulation of Biofilm Formation in Shewanella: Insights from Shewanella sp. Pdp11 Extracellular Products

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    Biofilm formation is a survival strategy for bacteria, contributing to their persistence in natural and industrial environments. In this study, we investigated the ability of extracellular products (ECPs) produced by the probiotic strain Shewanella sp. Pdp11 under different culture conditions to inhibit biofilm formation in pathogenic and environmental Shewanella strains. ECPs from specific culture conditions altered biofilm formation in several Shewanella strains, with Shewanella hafniensis P14 displaying the highest sensitivity. Metabolomic analysis of the ECPs identified glycogen as a key metabolite associated with biofilm inhibition. Further genomic analysis of S. hafniensis P14 revealed an interruption in its glycogen synthesis pathway, suggesting a dependency on external glycogen-related metabolites for biofilm development. These findings demonstrate that Shewanella sp. Pdp11 ECPs can modify biofilm formation across multiple Shewanella strains, particularly in S. hafniensis P14 through glycogen-associated mechanisms.Funding for open access publishing: Universidad de Málaga/CBUA and Ministerio de Ciencia e Innovación PID2020-113637RB-C21, PID2020-113637RB-C22

    The Impact of Video-Assisted Debriefing on Fostering Self-Critical Thinking in Mental Health Nursing Students

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    This study investigated the impact of video recordings from simulated mental health scenarios on the self-critical thinking of undergraduate nursing students. Video-assisted debriefing (VAD) enables students to review their own performance, clarifying memory gaps, applying theory to practice, and fostering self-reflection to identify strengths and areas for improvement. Although widely used, few studies have examined its effect specifically on self-critical capacity in mental health nursing education. A quasi-experimental exploratory design was used, collecting both quantitative and qualitative data after two debriefing formats: verbal and video-assisted. Quantitative data tracked trends in self-evaluation, while qualitative data explored students' reflections on performance, emotions, strengths, and weaknesses. Data integration provided comprehensive insight. Quantitative results showed no significant changes between the two evaluation moments. However, qualitative analysis revealed deeper reflections and stronger identification of strengths during VAD sessions. Students felt more self-aware and critical when watching themselves, recognizing specific areas for improvement and reporting enhanced emotional insight. VAD proved valuable in developing students’ self-perception and reflective thinking in mental health simulations. Some mental health care aspects remained difficult regardless of feedback type, suggesting the need for focused training. Mixed-method approaches offered richer understanding of learning processes. Implications for Nursing Management: Incorporating VAD into clinical training can enhance studenFunding for open access charge: Universidad de Málaga / CBUA. 2is research was supported in part by the University of Malaga within the framework of the 9nancing program of educational innovation projects under number PIE 19-039. Funding for open access charge: Universidad de Málaga/ CBUA

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