Episteme: modelo de pódcast para comunicar resultados científicos y de investigación

Con esta propuesta se pretende dar a conocer las claves imprescindibles para la puesta en marcha de ‘Episteme’, un pódcast con carácter científico del Grupo de Investigación ‘Comunicación y Menores’ de la UCAM, que sea capaz de visibilizar las investigaciones en el área de conocimiento de la comunicación. A través del uso del lenguaje radiofónico, la ciencia podría sumarse a la cotidianidad del podcasting. Este tipo de productos ágiles, sencillos y de corta duración, permitirían alcanzar, sin perder el rigor científico, una utopía: la ciencia abierta en el siglo XXI.TECHNO REVIEW | 2023 | ISSN 2695-9933International Technology Science and Society Review / Revista Internacional de Tecnología Ciencia y Sociedad https://doi.org/10.37467/revtechno.v13.4813© GKA Ediciones, authors. Creative Commons Reconocimiento-NoComercial-SinObraDerivadaThe aim of this proposal is to present the essential keys for the launch of 'Epis-teme', a scientific podcast of the UCAM's 'Communication and Minors' Research Group, which is capable of making research in the area of communication knowl-edge visible. Through the use of radio language, science could be added to the ev-eryday life of podcasting. This type of agile, simple and short-lived product would make it possible to achieve, without losing scientific rigour, a utopia: open science in the 21st century.Con esta propuesta se pretende dar a conocer las claves imprescindibles para la puesta en marcha de ‘Episteme’, un pódcast con carácter científico del Grupo de Investigación ‘Comunicación y Menores’ de la UCAM, que sea capaz de visibilizar las investigaciones en el área de conocimiento de la comunicación. A través del uso del lenguaje radiofónico, la ciencia podría sumarse a la cotidianidad del podcasting. Este tipo de productos ágiles, sencillos y de corta duración, permitirían alcanzar, sin perder el rigor científico, una utopía: la ciencia abierta en el siglo XXI.TECHNO REVIEW | 2023 | ISSN 2695-9933International Technology Science and Society Review / Revista Internacional de Tecnología Ciencia y Sociedad https://doi.org/10.37467/revtechno.v13.4813© GKA Ediciones, authors. Creative Commons Reconocimiento-NoComercial-SinObraDerivadaCiencias de la Comunicació

Usabilidad de los smartphones en la infancia: estudio de caso a través de la fotografía

Ver a niños de entre 3 y 6 años interaccionando con los smartphones forma parte de nuestro paisaje urbano más natural. Nos encontramos ante nativos digitales que hacen uso de diversas funcionalidades que poseen estos dispositivos, con el fin de acceder y consumir productos audiovisuales como videojuegos, fotografías, vídeos, etc. Son instrumentos diseñados bajo una estrategia de mercado, pensados para facilitar el acceso a juegos, vídeos y música en cualquier momento y lugar. Esto provoca la facilidad de acceso y uso de esta tecnología por parte de los pequeños, que, sin embargo, encuentran limitaciones en su uso, normalmente impuestas por los progenitores que son los que finalmente deben pautar los tiempos y los contenidos a los que se expondrán sus hijos. La toma de fotografía es una de las actividades más habituales realizada a través de un smartphone por los niños, además de jugar o ver documentos audiovisuales. La experiencia que planteamos convierte al pequeño en un sujeto activo de la propia investigación, ya que aparece en el centro del estudio como sujeto productor y no sólo como sujeto. Nos interesa saber cuál es la percepción que los niños de 5 años tienen del uso de los smartphones y, sobre todo, analizar cómo son en la práctica los productos fotográficos que son capaces de hacer. A través de una metodología caleidoscópica y del desarrollo de técnicas variadas abordamos esta realidad.It is normal to see children between 3 and 6 years interacting with smartphones. They are digital natives who make use of various functionalities that these devices possess, in order to access and consume audiovisual products such as video games, photographs, videos, etc. Smartphones are instruments designed under a market strategy designed to facilitate access to games, videos and music at any time and place. Children easily access the use of this technology, who nevertheless find limitations in its use, normally imposed by the parents who donate those who finally must schedule the times and contents to which their children will be exposed. Photography is one of the most common activities carried out through a smartphone by children, in addition to playing or viewing audiovisual documents. The experience we propose turns the child into an active subject of the research itself as it appears in the center of the study as a producing subject and not only as a subject. We are interested to know what the perception that 5-year-old children have of using smartphones, and above all, to analyze how the photographic products they are capable of doing are in practice. We address this reality through a kaleidoscopic methodology and the development of varied techniques.Ciencias de la ComunicaciónEducació

Balancing porosity and mechanical properties of titanium samples to favor cellular growth against bacteria

Two main problems limit the success of titanium implants: bacterial infection, which restricts their osseointegration capacity; and the stiffness mismatch between the implant and the host cortical bone, which promotes bone resorption and risk of fracture. Porosity incorporation may reduce this difference in stiffness but compromise biomechanical behavior. In this work, the relationship between the microstructure (content, size, and shape of pores) and the antibacterial and cellular behavior of samples fabricated by the space-holder technique (50 vol % NH4HCO3 and three ranges of particle sizes) is established. Results are discussed in terms of the best biomechanical properties and biofunctional activity balance (cell biocompatibility and antibacterial behavior). All substrates achieved suitable cell biocompatibility of premioblast and osteoblast in adhesion and proliferation processes. It is worth to highlighting that samples fabricated with the 100–200 μm space-holder present better mechanical behavior—in terms of stiffness, microhardness, and yield strength—which make them a very suitable material to replace cortical bone tissues. Those results exposed the relationship between the surface properties and the race of bacteria and mammalian cells for the surface with the aim to promote cellular growth over bacteria.University of Seville (Spain) VI Plan Propio de Investigación y Transferencia—US 2018, I.3A

Statistical pattern modeling in vision-based quality control systems

Machine vision technology improves productivity and quality management and provides a competitive advantage to industries that employ this technology. In this article, visual inspection and quality control theory are combined to develop a robust inspection system with manufacturing applications. The inspection process might be defined as the one used to determine if a given product fulfills a priori specifications, which are the quality standard. In the case of visual inspection, these specifications include the absence of defects, such as lack (or excess) of material, homogeneous visual aspect, required color, predetermined texture, etc. The characterization of the visual aspect of metallic surfaces is studied using quality control chars, which are a graphical technique used to compare on-line capabilities of a product with respect to these specifications. Original algorithms are proposed for implementation in automated visual inspection applications with on-line execution requirements. The proposed artificial vision method is a hybrid between the two usual methods of pattern comparison and theoretical decision. It incorporates quality control theory to statistically model the pattern for defect-free products. Specifically, individual control charts with 6-sigma limits are set so the inspection error is minimized. Experimental studies with metallic surfaces help demonstrate the efficacy and robustness of the proposed methodology.Publicad

Associations of accumulated persistent organic pollutants in breast adipose tissue with the evolution of breast cancer after surgery

Dr. JP Arrebola is under contract within the Ramón y Cajal Program (RYC-2016-20155, Ministerio de Economía, Industria y Competitividad, Spain). This study was supported by research grants from Instituto de Salud Carlos III, Junta de Andalucía and European Regional Development Fund – FEDER (PI-0513/2012, PI16/01858, PI18/01573, PI20/01568).Chronic exposure to persistent organic pollutants (POPs) is suspected to contribute to the onset of breast cancer, but the impact on the evolution of patients after diagnosis is unclear. We aimed to analyze the contribution of long-term exposure to five POPs to overall mortality, cancer recurrence, metastasis, and development of second primary tumors over a global follow-up of 10 years after surgery in breast cancer patients in a cohort study. Between 2012 and 2014, a total of 112 newly diagnosed breast cancer patients were recruited from a public hospital in Granada, Southern Spain. Historical exposure to POPs was estimated by analyzing their concentrations in breast adipose tissue samples. Sociodemographic data were collected through face-to-face interviews, while data on evolution tumor were retrieved from clinical records. Statistical analyses were performed using Cox regression (overall survival, breast cancer recurrence or metastasis) and binary logistic regression models (joint outcome variable). We also tested for statistical interactions of POPs with age, residence, and prognostic markers. The third vs first tertile of hexachlorobenzene concentrations was associated with a lower risk of all-cause mortality (Hazard Ratio, HR = 0.26; 95 % Confidence Interval, CI = 0.07-0.92) and of the appearance of any of the four events (Odds Ratio = 0.37; 95 % CI = 0.14-1.03). Polychlorinated biphenyl 138 concentrations were significantly and inversely associated with risk of metastasis (HR = 0.65; 95 % CI = 0.44-0.97) and tumor recurrence (HR = 0.69; 95 % CI = 0.49-0.98). Additionally, p,p & PRIME;dichlorodiphenyldichloroethylene showed inverse associations with risk of metastasis in women with ER-positive tumors (HR = 0.49; 95 % CI = 0.25-0.93) and in those with a tumor size <2.0 cm (HR = 0.39; 95 % CI = 0.18-0.87).Ministerio de Economía, Industria y Competitividad, Spain RYC-2016-20155Instituto de Salud Carlos IIIJunta de AndalucíaEuropean Regional Development Fund – FEDER (PI-0513/2012, PI16/01858, PI18/01573, PI20/01568)University of Granada / CBU

Derivatives Holdings and Systemic Risk in the U.S. Banking Sector

This paper studies the impact of the banks portfolio holdings of financial derivatives on the banks individual contribution to systemic risk over and above the effect of variables related to size, interconnectedness, substitutability, and other balance sheet information. Using a sample of 91 U.S. bank holding companies from 2002 to 2011, we compare five measures of the banks contribution to systemic risk and find that the new measure proposed in this study, Net Shapley Value, outperforms the others. Using this measure we find that the banks holdings of foreign exchange and credit derivatives increase the banks contributions to systemic risk whereas holdings of interest rate derivatives decrease it. Nevertheless, the proportion of non-performing loans over total loans and the leverage ratio have much stronger impact on systemic risk than derivatives holdings. We find that before the subprime crisis credit derivatives decreased systemic risk whereas during the crisis increased it. So, credit derivatives seemed to change their role from shock absorbers to shock issuers. This effect is not observed in the other types of derivatives

Liquidity Commonalities in the Corporate CDS Market around the 2007-2012 Financial Crisis

This study presents robust empirical evidence suggesting the existence of significant liquidity commonalities in the corporate Credit Default Swap (CDS) market. Using daily data for 438 firms from 25 countries in the period 2005-2012 we find that these commonalities vary over time, being stronger in periods in which the global, counterparty, and funding liquidity risks increase. However, commonalities do not depend on firm's characteristics. The level of the liquidity commonalities differs across economic areas being on average stronger in the European Monetary Union. The effect of market liquidity is stronger than the effect of industry specific liquidity in most industries excluding the banking sector. We document the existence of asymmetries in commonalities around financial distress episodes such that the effect of market liquidity is stronger when the CDS market price increases. The results are not driven by the CDS data imputation method or by the liquidity of firms with high credit risk and are robust to alternative liquidity measures

Portfolio Choice with Indivisible and Illiquid Housing Assets: The Case of Spain

This paper presents a procedure for computing the theoretically optimal portfolio under the assumption that housing is an indivisible, illiquid asset that restricts the portfolio choice decision. The analysis also includes the financial constraints households may face when they apply for external funding. The set of financial assets that constitute the household's portfolios are bank time deposits, stocks, mortgage, and housing. We compare the theoretically optimal portfolio against Spanish household's actual choices using a unique data set, the Spanish Survey of Household Finance. In comparison with the optimal portfolio, households significantly underinvest in stocks and deposits. In the case of mortgages, the optimal and actual portfolios weights are not unequal. At a more disaggregated level, some additional differences emerge that are explained by demographic, educational, and income characteristics