Depósito Digital e-UCJC
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SOPRENE: Assessment of the Spanish Armada’s Predictive Maintenance Tool for Naval Assets
Get PDFPredictive maintenance has lately proved to be a useful tool for optimizing costs, performance and systems availability. Furthermore, the greater and more complex the system, the higher the benefit but also the less applied: Architectural, computational and complexity limitations have historically ballasted the adoption of predictive maintenance on the biggest systems. This has been especially true in military systems where the security and criticality of the operations do not accept uncertainty. This paper describes the work conducted in addressing these challenges, aiming to evaluate its applicability in a real scenario: It presents a specific design and development for an actual big and diverse ecosystem of equipment, proposing an semi-unsupervised predictive maintenance system. In addition, it depicts the solution deployment, test and technological adoption of real-world military operative environments and validates the applicability.MINISDEFDGAM-PLATI
Las metáforas del periodismo. Mutaciones y desafíos
No full textEl periodismo se encuentra muy cerca de la literatura por el uso de la palabra, por el uso de las estructuras y, sobre todo, por el uso de los recursos. Este libro se ocupa de las metáforas que se usan en el periodismo, especularmente, para hablar del periodismo. A partir de una indagación profunda y con una mirada original el texto recorre las figuras retóricas que la profesión usa para referirse a sí mismo. A partir de ese recorrido por las metáforas que el periodismo cristalizara a lo largo de más de un siglo, el texto cuestiona la vigencia y las paradojas de una profesión que se ha convertido, con la irrupción de lo digital en nuestro tiempo, en protagonista de los medios
Similar ergogenic effect of caffeine on anaerobic performance in men and women athletes
No full textPurpose Caffeine is widely considered an ergogenic aid to increase anaerobic performance although most of this evidence is supported by investigations with only male samples. To date, it is unknown if the ergogenic effect of caffeine on anaerobic performance is of similar magnitude in men and women athletes. The aim of this study was to determine the magnitude of the ergogenic effect of caffeine on the Wingate test in men and women. Methods In a double-blind, placebo-controlled, cross-over experimental trial, ten women athletes and ten men athletes performed a 15-s adapted version of the Wingate test after ingesting 3 mg of caffeine per kg of body mass or a placebo (cellulose).
Results In comparison to the performance obtained in the 15-s Wingate test with a placebo, caffeine increased peak power in men (9.9 ± 0.8 vs. 10.1 ± 0.8 W/kg, p < 0.01, d = 0.26) and in women (8.8 ± 0.9 vs. 9.1 ± 0.8 W/kg, p = 0.04, d = 0.30). Caffeine was also effective to increase the mean power in men (8.9 ± 0.7 vs. 9.0 ± 0.7 W/kg, p = 0.01, d = 0.21) and women (8.1 ± 0.7 vs. 8.3 ± 0.7 W/kg, p = 0.01, d = 0.27). The ergogenic effect of caffeine on the 15-s Wingate peak power (2.3 ± 3.2% in men and 3.2 ± 2.8% in women; p = 0.46) and mean power (2.0 ± 1.7% and 2.4 ± 2.3%, respectively; p = 0.93) was of similar magnitude in both sexes. Conclusion Acute ingestion of 3 mg kg−1 of caffeine enhanced peak and mean cycling power during a 15-s adapted version of the Wingate test in men and women and the ergogenic effect was of similar magnitude in both sexes. This information suggests that both men and women athletes might obtain similar benefits from caffeine supplementation during anaerobic exercise
Efficacy of psychological interventions on psychological outcomes in coronary artery disease: systematic review and meta-analysis
No full textBackground
The benefits of cognitive-behavioral treatment (CBT) and positive psychology therapy (PPT) in patients with cardiovascular disease are still not well defined. We assessed the efficacy of CBT and PPT on psychological outcomes in coronary artery disease (CAD) patients.
Methods
Randomized controlled trials evaluating CBT or PPT in CAD patients published until May 2018 were systematically analyzed. Primary outcomes were depression, stress, anxiety, anger, happiness, and vital satisfaction. Random effects meta-analyses using the inverse variance method were performed. Effects were expressed as standardized mean difference (SMD) or mean differences (MD) with their 95% confidence intervals (CIs); risk of bias was assessed with the Cochrane tool.
Results
Nineteen trials were included (n = 1956); sixteen evaluated CBT (n = 1732), and three PPT (n = 224). Compared with control groups, depressive symptoms (13 trials; SMD −0.80; 95% CI −1.33 to −0.26), and anxiety (11 trials; SMD −1.26; 95% CI −2.11 to −0.41) improved after the PI, and depression (6 trials; SMD −2.08; 95% CI −3.22 to −0.94), anxiety (5 trials; SMD −1.33; 95% CI −2.38 to −0.29), and stress (3 trials; SMD −3.72; 95% CI −5.91 to −1.52) improved at the end of follow-up. Vital satisfaction was significantly increased at follow-up (MD 1.30, 0.27, 2.33). Non-significant effects on secondary outcomes were found. Subgroup analyses were consistent with overall analyses.
Conclusion
CBT and PPT improve several psychological outcomes in CAD patients. Depression and anxiety improved immediately after the intervention while stress and vital satisfaction improve in the mid-term. Future research should assess the individual role of CBT and PPT in CAD populations
“Prólogo” al libro 'Literatura y ELE. Miradas desde los estudios literarios y culturales'
No full textEl prólogo aborda las teorías de la literatura que analiza el libro en diálogo con las necesidades prácticas de los docentes de español como segunda lengua. Con el objetivo de reflexionar acerca del puente tendido entre manifestaciones literarias y enseñanza del idioma, analizo cómo los autores de este libro –que comparten las tareas investigadoras con la capacitación del profesorado y la docencia— indagan cuestiones teóricas y metodológicas que no debaten su profundidad intelectual con la pedagogía aplicada. Variadas perspectivas epistémicas como la narratología, los estudios culturales, los géneros, los audiovisuales, el canon o las teorías feministas, entrecruzan su alcance con orientaciones metodológicas de muy significativa aplicación: la perspectiva interdisciplinar, el enfoque multimodal, la enseñanza global, etc. señalan la posibilidad literaria como acicate de un aprendizaje efectivo, motivador y duradero del idioma. Los once ensayos abordan, así, la centralidad de la literatura en la enseñanza de la lengua, una estrategia que redunda en otras muchas destrezas. Pues, como sugieren la mayor parte de las didácticas, la competencia literaria –esa que llega tras la codificación lingüística y la lectura comprensiva— puede aportar un aprendizaje integrado; capaz de recibir, interpretar y conocer el mundo cultural, histórico y social en el que la lengua se inscribe
A Metro-Based System as Sustainable Alternative for Urban Logistics in the Era of E-Commerce
Get PDFBusiness to consumer e-commerce (B2C) has increased sharply in recent years driven by a growing online population and changes in consumer behavior. In metropolitan areas, the “Amazon effect” (online retailers’ vast selection, fast shipping, free returns, and low prices) has led to an increased use of light goods vehicles. This is affecting the rational functioning of the transport system, including a high degree of fragmentation, low load optimization, and, among other externalities, higher traffic congestion. This paper investigates the potential of a metro system, in a big city like Madrid, to provide delivery services by leveraging its existing carrying capacity and using the metro stations to collect parcels in lockers. It would be a new mixed distribution model for last-mile deliveries associated with e-commerce. To that end, the paper evaluates the cost and impacts of two alternative scenarios for managing the unused space in rolling stock (shared trains) or specific full train services (dedicated trains) on existing lines. The external costs of the proposed scenarios are compared with current e-commerce delivery scenario (parcel delivery by road). The results show that underground transport of parcels could significantly reduce congestion costs, accidents, noise, GHG emissions, and air pollution
Mobility Restrictions and E-Commerce: Holistic Balance in Madrid Centre during COVID-19 Lockdown
Get PDFCOVID-19 has brought about a substantial change in urban mobility, as well as an unprecedented increase in e-commerce throughout the world due to the emergence of new ways of shopping and consumption habits. In this context, urban logistics plays a crucial role in the triple bottom line of sustainability. The present document establishes a holistic vision of the problem aiming to (i) measure and compare the traffic generated in the Madrid Central area (low-emission zone) during the periods before and after the pandemic, and (ii) quantify e-commerce orders made by residents, as well as the Light Commercial Vehicles (LCV) required to deliver these parcels, measuring their environmental impact. The results show that road traffic in the Madrid Central area decreased by approximately 2/3 compared to normal levels and 1/2 in the case of LCVs. With regards to e-commerce, the number of parcels delivered doubled. This fact entailed an increase in the number of LVCs dedicated to package delivery in the central district and more pollution, but to a lesser extent than the growth of e-commerce. The challenge faced by urban logistics in the post-Covid era is managing to blend new mobility within large cities with the high volumes of e-commerce deliveries demanded by residents
Is any feature of the stabilometric evaluation clinically relevant in patients with temporomandibular disorders? A cross-sectional study
Get PDFCurrent neuroanatomical evidence showed the anatomical relationship between the temporomandibular joint innervation with the vestibular system. However, there is no clear evidence regarding if temporomandibular disorders are associated with balance impairments. Therefore, the aims of this study were to assess the clinical relevance of stabilometric features in populations with temporomandibular disorders and to analyze the influence of the mandibular position and visual afference in the balance scores in both healthy and clinical populations. This observational study was conducted in one sample of healthy controls and one sample with temporomandibular disorders. Sociodemographic data (age, gender, height, weight, body mass index, and foot size), clinical data (presence or absence of temporomandibular disorders) and stabilometric data under six different conditions were collected. Sixty-nine subjects (43.5% male; 36.2% patients) were assessed. No differences between Temporomandibular disorders and healthy groups were found in any stabilometric outcomes, unlike oscillation area with closed eyes and medium interscuspidal position (p 0.05). This study found that healthy subjects and patients with temporomandibular disorders showed no balance differences in the stabilometric outcomes assessed. Although visual input played an important role in the balance, mandibular position seems to be irrelevant
CCN2 Increases TGF- Receptor Type II Expression in Vascular Smooth Muscle Cells: Essential Role of CCN2 in the TGF- Pathway Regulation
Get PDFThe cellular communication network factor 2 (CCN2/CTGF) has been traditionally described as a mediator of the fibrotic responses induced by other factors including the transforming growth factor (TGF- ). However, several studies have defined a direct role of CCN2 acting as a growth factor inducing oxidative and proinflammatory responses. The presence of CCN2 and TGF- together in the cellular context has been described as a requisite to induce a persistent fibrotic response, but the precise mechanisms implicated in this relation are not described yet. Considering the main role of TGF- receptors (T R) in the TGF- pathway activation, our aim was to investigate the effects of CCN2 in the regulation of T RI and T RII levels in vascular smooth muscle cells (VSMCs). While no differences were observed in T RI levels, an increase in T RII expression at both gene and protein level were found 48 h after stimulation with the C-terminal fragment of CCN2 (CCN2(IV)). Cell pretreatment with a T RI inhibitor did not modify T RII increment induced by CCN2(VI), demonstrating a TGF- -independent response. Secondly, CCN2(IV) rapidly activated the SMAD pathway in VSMCs, this being crucial in the upregulation of T RII since the preincubation with an SMAD3 inhibitor prevented it. Similarly, pretreatment with the epidermal growth factor receptor (EGFR) inhibitor erlotinib abolished T RII upregulation, indicating the participation of this receptor in the observed responses. Our findings suggest a direct role of CCN2 maintaining the TGF- pathway activation by increasing T RII expression in an EGFR-SMAD dependent manner activation
Twitter presidencial ante la COVID-19: Entre el populismo y la política pop
Get PDFEl trabajo analiza el uso de Twitter como canal de comunicación presidencialista en el periodo inicial de la COVID-19. El objetivo es conocer el manejo de cuatro presidentes (España, Argentina, México y Brasil) y analizar la tesis del presidencialismo populista en líderes en su primera mitad de mandato. El método es cualitativo y compara los mensajes de la cuenta personal de Twitter las primeras 20 semanas de 2020. Se analizan en seis categorías: polarización, conspiración, exaltación y liderazgo carismático, personalización y vida privada, emoción y sentimientos, y publicidad en medios. Los cuatro presidentes comparten rasgos populistas, pero en distinto grado o caracterización. López Obrador y Bolsonaro ofrecen un perfil más populista con apelaciones emotivas al pueblo y su acción sanitaria salvífica. En cambio, Alberto Fernández y Pedro Sánchez responden al perfil de política pop, de liderazgo mediatizado para que la prensa amplifique sus logros. Se concluye que la pandemia ha acentuado el perfil presidencialista y personalista, aun cuando no encajen en el paradigma populista. Así, Sánchez y Bolsonaro sí despliegan una estrategia de comunicación de gestión sanitaria, mientras que López Obrador y Fernández apenas prestan atención a la política sanitaria