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La transformación digital en las administraciones públicas: efectos de las TICS en los recursos humanos y las relaciones laborales
Get PDFEn este trabajo se analiza el resultado del impacto de la transformación digital en las administraciones públicas y como las TICs han modificado la gestión interna y los recursos humanos de esto organismos públicos.Estudiando el marco normativo se examinan los avances que se han logrado y los desafíos que surgen en este cambio como son, la falta de coordinación entre administraciones, la brecha digital y la resistencia al cambio. Se abordan herramientas clave como el Sistema RED y el Sistema Cl@ve, así como los planes de digitalización vigentes. También se analiza el teletrabjo como una nueva e importante modalidad de trabajo y el papel de la negociación colectiva para satisfacer las necesidades de las diferentes administraciones. Por último, se mencionan los derechos que tienen los ciudadanos ante la digitalización como son, la privacidad, la accesibilidad o la desconexión digital y se destaca un enfoque centrado en la ciudadanía para lograr una Administración Pública inclusiva, segura y eficiente. <br /
Calor de hogar: sentimentalismo en el audiovisual postcriminal
No full textEste artículo propone explorar la aparición de una tendencia cultural emergente en el audiovisual criminal, tanto el cine como la televisión, que descansa sobre su componente más melodramático. La formación cultural resultante constituiría un ejemplo del fenómeno postgenérico en el que habría entrado la creación cinematográfica y televisiva durante las últimas dos décadas. Esta tendencia está presente en mayor medida en el audiovisual criminal realista, con especial relevancia en aquellos productos que descansan sobre la representación de la mujer. En estas creaciones audiovisuales la experiencia que acompaña al crimen es más relevante que el crimen en sí, lo cual redirige las narrativas hacia el ámbito privado, dejando el ámbito público o institucional en un segundo plano, o mejor dicho mediante la atención a lo privado canalizan un discurso relativo al lugar del individuo dentro del entramado social. Más concretamente, el artículo argumenta que el audiovisual perteneciente al postgénero criminal construye un discurso que representa una estructura de sentimiento caracterizada por un elemento de esperanza que contradiría la desesperanza típicamente atribuida al género clásico. En última instancia, se argumenta que en oposición a una visión pesimista del postgénero, que lo entiende como una dinámica más del postmodernismo, el audiovisual criminal canaliza un cierto optimismo que al apropiarse del imaginario del sentimentalismo no está exento de potencial ideológico
The challenge of science in the face of polarization around recreational hunting and wildlife management
Get PDFScience is currently confronting a loss of prestige in the face of the proliferation of subjective “truths”. In a world saturated with information, verifiable facts are giving way to personal and collective beliefs that are amplified by biases in the media and on social networks. This undermines confidence in the scientific method and encourages disinformation and social polarization, all of which weaken constructive dialogue among sectors on many key issues. One emblematic case of this disconnection between science and social perception is recreational hunting. This activity is seen by some as essential for conservation, while others view it as harmful and obsolete. Wildlife science is often instrumentalized or delegitimized by both extremes, thus perpetuating a harmful cycle of mistrust and confrontation. In this perspective paper we highlight how this phenomenon reflects a greater problem: the challenge of reconciling science with an increasingly fragmented society that is polarized by post-truth
Assessment of Myofascial Trigger Points with ultrasound: a methodology combining external vibration with Power Doppler Imaging and B-mode
Get PDFIntroduction: This case series explores a novel methodology for identifying myofascial trigger points (MTrPs) by integrating Doppler and B-mode ultrasound with externally applied vibratory stimulation. The study aims to address the current lack of accessible and objective tools for MTrP assessment in clinical settings.
Case presentation: Five participants were included: four healthy individuals and one post-stroke patient. A custom-designed vibration device was developed to apply mechanical stimulation to the gastrocnemius medialis muscle, while ultrasound imaging was collected using a standardized setup. To optimize vibration signal detection within muscle tissue, different configurations of the electrodes transmitting the vibration and the Doppler modes (Color Doppler and Power Doppler Imaging (PDI)) were tested.
Results: PDI demonstrated superior sensitivity to vibration-induced muscle responses compared to conventional Color Doppler. A consistent pattern was identified among healthy participants. This pattern consisted of well-defined, non-vibratory zones surrounded by vibratory regions, corresponding to hypoechoic areas on B-mode ultrasound. These findings are suggestive of MTrPs and distinct from other stiff anatomical structures, such as fascia, tendons, or fibrotic tissue, which appear hyperechoic. In the stroke patient, pathological muscle adaptations reduced the consistency and visibility of vibratory stimulus propagation; however, MTrP-compatible areas were still identified. Notably, dry needling altered the Doppler signal in this case, attenuating the previously observed pattern.
Conclusions: This proof-of-concept study demonstrates the feasibility and reproducibility of a cost-effective assessment protocol that uses conventional ultrasound modes. Combining PDI, B-mode, and vibration may improve the objective identification of MTrPs and expand capabilities in musculoskeletal practice
Structural and functional comparison of hemoglobin Glb2-1 of Lotus japonicus with Glb1-1 and leghemoglobins
Get PDFThe legume Lotus japonicus expresses nine hemoglobins, including leghemoglobins (Lbs), class 1 phytoglobin (Glb1-1), and an unusual phytoglobin (Glb2-1). Quantitative PCR, proteomics, and plant mutant analyses indicated that Glb2-1 is mainly present in nodules without replacing Lb function, but is also in roots and photosynthetic tissues. Comparison of hormonal profiles of the knock-out mutants glb1-1, glb2-1, and glb1-1/2-1 showed that Glb1-1 and Glb2-1 have distinct functions. The increase of salicylic acid in the leaves of glb1-1 revealed a role of Glb1-1 in the defense response, which was corroborated by accumulation of pipecolic acid, a metabolite involved in plant immunity. In contrast, the decrease of bioactive jasmonoyl-isoleucine in glb2-1 was consistent with a role of Glb2-1 in the plant's reproductive stage. The mutants also showed changes in cytokinins, gibberellins, and polyamines, but without clear distinctive patterns. The crystal structure of Glb2-1 was determined to 1.6 Å resolution and compared with those of soybean Lba and Arabidopsis Glb1. In combination with mutant versions of Glb2-1, residues Tyr31, His64, and Cys65 were identified as critical for O2-binding stability. Spectral changes in heme coordination when Tyr31 is substituted for Phe highlights the importance of the residue at the B10 position for Lb and Glb function
Shaping Hierarchical Porosity Beads from Metal–Organic Framework Powders Using Freeze Spherification
Get PDFMicroporous powdered Metal–Organic Frameworks (MOFs) shaped by conventional mechanical densification methods (e.g., pelletization, granulation) present internal diffusion limitations and pressure drops that limit their technological leap to industrial applications. Therefore, the ongoing search for novel shaping methods that could manufacture controlled hierarchical porous structures with enhanced diffusion, high surface area, crystallinity, and mechanical robustness is needed. In this work, a freeze spherification method is developed to shape MOF-808 powder into spherical beads with hierarchical micro/macro porosity. The optimum spherical bead composition, in terms of suspension solids loading (10, 20, or 30 vol %) and hydroxypropyl methylcellulose (HPMC) binder content (30, 25, and 20 wt %), is determined by considering the bulk density, MOF surface accessibility, and the formation of a highly permeable porous structure in the final beads. The MOF-808 in powder and spherical bead forms is characterized by PXRD, IR, TGA, SEM, N2 physisorption, and mercury porosimetry. The analyses confirm the formation of hierarchically ordered porosity with varying pore sizes, morphologies, and MOF coating degrees, which depend on both suspension solids loading and binder content. The combination of MOF-808 with the HPMC binder does not affect its crystallinity, but a reduction of the binder content of 30 vol % beads from 30 to 25 wt % is key to retain 86% of the MOF-808 surface area . Noteworthy, the beads processed under optimum conditions exhibit sufficient mechanical integrity and superior accessibility, highlighting freeze spherification as a promising shaping method to bring powdered MOF-based catalysts and adsorbents to real-world applications
Binary and ternary eutectic composites of the CaO – ZrO2 – MgO system for porous ceramic supports
Get PDFWe recently reported on the use of c-ZrO2-MgO eutectic composites produced by directional solidification as supports for CO2-selective membranes based on molten carbonates. Here, we explore other compositions, particularly within the CaO – ZrO2 – MgO system, with the ultimate goal of improving the membrane permeation by either increasing the support’s ionic conductivity or reducing its tortuosity. The three eutectic-like composites studied display MgO fibres embedded in single-phase or two-phase matrices. The composite with 8.5CaO/48.5ZrO2/43MgO mol% composition consists of MgO fibres in an oxide-ion conducting c-ZrO2 matrix containing both Ca and Mg. A binary CaZrO3 – MgO eutectic-like composite forms at ∼33CaO/35ZrO2/32MgO mol% with MgO fibres in a Ca-poor, Mg-doped CaZrO3 matrix displaying mixed oxide-ion and hole conductivity. For 22CaO/45ZrO2/33MgO mol% composition, a ternary eutectic forms with MgO fibres at the interfaces of CaZrO3 and c-ZrO2 phases. Acid etching tests were conducted to verify the feasibility of fabricating a porous support
Dual Fast-Track Cache: Organizing Ring-Shaped Racetracks to Work as L1 Caches
No full textStatic Random-Access Memory (SRAM) is the fastest memory technology and has been the common design choice for implementing first-level (L1) caches in the processor pipeline, where speed is a key design issue that must be fulfilled. On the contrary, this technology offers much lower density compared to other technologies like Dynamic RAM, limiting L1 cache sizes of modern processors to a few tens of KB. This paper explores the use of slower but denser Domain Wall Memory (DWM) technology for L1 caches. This technology provides slow access times since it arranges multiple bits sequentially in a magnetic racetrack. To access these bits, they need to be shifted in order to place them under a header. A 1-bit shift usually takes one processor cycle, which can significantly hurt the application performance, making this working behavior inappropriate for L1 caches. Based on the locality (temporal and spatial) principles exploited by caches, this work proposes the Dual Fast-Track Cache (Dual FTC) design, a new approach to organizing a set of racetracks to build set-associative caches. Compared to a conventional SRAM cache, Dual FTC enhances storage capacity by 5× while incurring minimal shifting overhead, thereby rendering it a practical and appealing solution for L1 cache implementations. Experimental results show that the devised cache organization is as fast as an SRAM cache for 78% and 86% of the L1 data cache hits and L1 instruction cache hits, respectively (i.e., no shift is required). Consequently, due to the larger L1 cache capacities, significant system performance gains (by 22% on average) are obtained under the same silicon area
¿Sueñan los androides con ovejas eléctricas? Conversación con Salvador Pérez Arroyo
No full textSalvador Pérez Arroyo tiene algo de maestro oriental. Incluso antes de haber hecho las maletas y trasladado su vida a lo que nosotros llamamos el Extremo Oriente, el ser de Salvador tenía ya una presencia próxima y distante a la vez. Desde la elegancia de su deambular por las aulas y pasillos de la vieja Escuela de Arquitectura de Madrid, Salvador ejercía un magisterio profundo, original y culto, muy distinto del de otros colegas contemporáneos. En su heterodoxa cátedra convocaba a muy variados profesionales –desde Iñaki Ábalos o Juan Herreros a Alejandro Zaera– con la única condición de estar dispuestos a trabajar codo con codo con los estudiantes para desvelar conjuntamente el futuro de la arquitectura.
Salvador es un arquitecto y un académico atípico. Un fuera de radar que, en estos tiempos convulsos, todavía mantiene el magisterio de quien no ha renunciado a vivir el tiempo que le ha tocado en suerte. También se puede decir de él que nunca ha rehusado a responder a ninguna fórmula que le hayamos planteado: entrevistas, reflexiones, escritos, etcétera. Esta conversación que se publica aquí se ha producido en el momento de un nuevo traslado de Salvador. En este caso desde Vietnam a Italia, a Padua en concreto, donde ha decidido instalarse por el gusto de recuperar las conversaciones con sus colegas de antaño.
El título de la conversación, un evidente robado a la obra de Philip K. Dick, ilustra su interés y su autoridad por la contemporaneidad. En este caso le planteamos cuestiones relacionadas con la práctica del proyecto y con su docencia, en esta nueva era que abre la inteligencia artificial. En su discurso aparecen igualmente muchos de los personajes que han ayudado a configurar nuestro tiempo, desde David Lynch a Michel Houellebecq, pasando también por los arquitectos Sigurd Lewerentz o Le Corbusier
Solid/Gas Synthesis of Isobutyl Propionate Catalyzed by Packed-Bed CalB Cross-Linked Enzyme Aggregates (CLEA)
No full textThis research examines the viability and effectiveness of cross-linked enzyme aggregates (CLEA) ofCandida antarctica lipase B (CalB)/bovine serum albumin (BSA) for the green synthesis of isobutyl propionate (isoPro) from propionic acid (aciP) and isobutyl alcohol (isoB). Solid/gas (S/G) biocatalysis is proposed as a more sustainable alternative to chemical synthesis, which involves toxic catalysts and harsh conditions, or plant extraction compounds, which are economically unfeasible for bulk production. A formulation containing 10 mg mL–1 BSA and 3% glutaraldehyde (GA) was selected based on CalB-CLEA’s demonstrated catalytic efficiency in n-heptane as solvent, along with its thermal and operational stability. Using 600 mg of the selected CalB-CLEA in the S/G bioreactor yielded 91.71% isoPro at a water activity (aw) of 0.52, with a nitrogen flow rate of 62 mL min–1 and a 1:4 acid/alcohol molar ratio, operating at 55 °C and 585 mmHg. Although 1.0 g of commercial CalB ImmoPlus achieved a higher yield (98.9%), its total turnover number (TTN) (mol product mol–1 enzyme) and specific space–time yield (STYspe) (g product L–1 h–1 mg–1 CalB) under steady-state conditions were 6- and 4-fold lower, respectively, than those of CalB-CLEA. Additionally, CalB-CLEA eliminates resin disposal costs, yielding similar outputs with lower enzyme loads while achieving comparable productivity. Ultimately, the S/G system incorporating CalB-CLEA outperforms both CalB ImmoPlus (in S/G) and CalB-CLEA (in n-heptane) in green, mass-based sustainability metrics, underscoring its strong potential for industrial-scale applications