Estudio histórico-artístico, iconográfico y propuesta de intervención de una talla barroca policromada de San Agustín. Imagen titular de una iglesia de Alzira

This work has been done to know all about the history of this sculpture, and to decide necessary methods for his conserva on and restora on. So that, has been achieved an ini al plan about the town and the church it concerned, whom represented one of more important monastery united in this region, and main established in this town. Too, has been achieved a compara ve plan about his iconoclast with other statues of this saint, which has detected some unknown iconoclas c aspects up to now, and that is the life me’s proof of this philosopher of Chris anity. Besides a short descrip on of materials and cra! s used by the ar st, to create this beau ful carving, an example of valencian baroque ostenta on. Whole has been documented in an exhaus ve photography plan. On the other hand, has been established a right conserva on and restora on plan for his needs. Have been detected altera on causes and has been documented with graphics all altera ons that, in addi on to veil the beauty of his luxurious pain ngs and gilts, is ge" ng in a serious danger stability of wood support. Through this preliminary plans, has been established the suitable methodology for his restora on, and his rear conserva on. Through this work, I pursue to reac ve one of no much works of art that s ll are preserved from this old monastery, and one of the more important historic and ar s c pieces of art of Alzira town.El presente trabajo se ha realizado con la intención de dar a conocer la historia de la siguiente escultura de san Agus! n, así como determinar los métodos necesarios para su conservación y restauración. Para ello, se ha realizado un estudio inicial de la localidad y de la iglesia a la que pertenecía, la cual cons" tuía uno de los conjuntos conventuales más importantes de la provincia, y con mayor arraigo en la localidad. También, se ha realizado un estudio compara" vo de su iconogra# a con otras imágenes del santo, que ha destapado algunos aspectos iconográfi cos desconocidos hasta el momento, y que son el refl ejo de la vida de este fi lósofo-teólogo de la Iglesia cris" - ana. Además de una breve descripción de los materiales y técnicas u" lizados por el ar" sta (estofados, dorados con oro fi no, troquelados…) para dar forma a esta bella talla, tes" go de la ostentación del barroco valenciano. Todo ello, documentado en un exhaus" vo estudio fotográfi co. Por otra parte, se ha establecido un plan de conservación y restauración adecuado a sus necesidades. Se han detectado las causas de degradación y se ha documentado gráfi camente las numerosas alteraciones que, además de velar la belleza de su rica policromía y dorados, pone en serio riesgo la estabilidad del soporte lígneo. A par" r de estos estudios previos, se han determinado la metodología idónea para su restauración, y su posterior conservación. Con este trabajo se pretende reac" var una de las pocas piezas conservadas del an" guo convento agus" no, y una de las obras con mayor valor histórico-ar! s" co de la ciudad de Alzira.Benavent Boluda, JA. (2014). Estudio histórico-artístico, iconográfico y propuesta de intervención de una talla barroca policromada de San Agustín. Imagen titular de una iglesia de Alzira. http://hdl.handle.net/10251/49381.Archivo delegad

Laboratori d'Estructura d'Ordinadors

El document forma part dels materials docents programats mitjançant l'ajut del Servei de Política Lingüística de la Universitat de València..El material correspon a la part experimental de les assignatures: • 34837 Estructura de Computadors, de segon curs del Grau en Enginyeria Multimèdia. • 34657 Estructura de Computadors, de segon curs del Grau en Enginyeria Informàtica. El material està dividit en 8 pràctiques, a desenvolupar en sessions de 2 hores i 30 minuts. La primera pràctica serveix com a introducció al MipsIt, software educacional de distribució gratuïta. MipsIt simula un ordinador bàsic amb la possibilitat de configurar la memòria cau. Addicionalment el programa disposa d'espai d'entrada/eixida (E/E) i gestió d'interrupcions, de manera que és possible provar tècniques bàsiques d'E/E. La segona sessió proposa una sèrie de programes en C que accedeixen a dades. Es proposa que s'analitze el rendiment dels programes en funció de diversos tipus de memòria cau de dades. En la tercera sessió es proposen una sèrie de tècniques que optimitzen el rendiment de la memòria cau, arreglant els problemes detectats en la sessió anterior. A la quarta i cinquena sessió es proposa la implementació de programes que fan ús de l'espai d'E/E. Inicialment mitjançant prova d’estat i posteriorment mitjançant interrupcions. En les tres últimes sessions, s'usa una màquina Linux, per poder així accedir a baix nivell al control dels perifèrics. La sisena sessió proposa l'accés a la controladora de teclat. La setena sessió, dedicada a discos magnètics, analitza les prestacions dels RAIDs: matriu redundant de discos independents, de l'anglès redundant array of independent disks. Finalment la vuitena sessió se centra en l'accés a baix nivell a la memòria de vídeo.The document corresponds to the experimental part of the subjects: Computer Structure (code 34837), in the second year of the Multimedia Engineering degree and the homonymous subject in the second year of the Computer Engineering degree (code 34657). The material is divided into 8 lab sessions, 2 hours and 30 minutes long each. The first lab session serves as an introduction to the software MipsIt. This tool emulates a basic computer with the possibility of configuring the cache memory. Additionally, the program has an input/output (I/O) space with interrupt management, so that it is possible to test basic I/O techniques. The second session proposes several C programs that access data. It is requested to analyse the performance of such programs on different types of data cache. In the third session, a series of techniques are introduced to optimize the performance of the cache, fixing the problems detected in the previous session. In the fourth and fifth sessions, the implementation of programs that make use of the I/O space is explained. Initially through polling (software driven I/O) and later through interruptions. In the last three sessions, a Linux machine is used, in order to be able to allow a low-level access of the peripherals. The sixth session is focalized in the keyboard controller. The seventh session, dedicated to magnetic disks, analyses the performance of RAIDs: redundant array of independent disks. Finally, the eighth session focuses on low-level access to video memory

A comparative analysis of printing techniques by using an active concentric ring electrode for bioelectrical recording

Purpose This paper aims to present a comparison between three types of manufacturing techniques, namely, screen-printed, inkjet and gravure, using different types of inks, for the implementation of concentric ring electrodes which permit estimation of Laplacian potential on the body surface. Design/methodology/approach Flexible concentric ring electrodes not only present lower skin electrode contact impedance and lower baseline wander than rigid electrodes but are also less sensitive to interference and motion artefacts. The above three techniques allow printing of conductive inks on flexible substrates, and with this work, the authors aim to study which is the best technique and ink to obtain the best electrode response. Findings From the results obtained regarding ink thickness, resistivity, electrode resistance and other performance parameters derived from electrocardiographic signal recording tests, it can be said that concentric electrodes using the screen-printing and inkjet techniques are suitable for non-invasive bioelectric signal acquisition. Originality/value The development of new types of inks and substrates for the electronics industry and the adaptation of new manufacturing techniques allow for an improvement in the development of electrodes and sensors.This work was financially supported by the Spanish Government and European FEDER funds (MAT2012-38429-C04-04).García Breijo, E.; Prats Boluda, G.; Lidon-Roger, JV.; Ye Lin, Y.; Garcia Casado, FJ. (2015). A comparative analysis of printing techniques by using an active concentric ring electrode for bioelectrical recording. Microelectronics International. 32(2):103-107. https://doi.org/10.1108/MI-03-2015-0021S103107322Besio, W., Aakula, R., Koka, K., & Dai, W. (2006). Development of a Tri-polar Concentric Ring Electrode for Acquiring Accurate Laplacian Body Surface Potentials. Annals of Biomedical Engineering, 34(3), 426-435. doi:10.1007/s10439-005-9054-8Besio, W., & Chen, T. (2007). Tripolar Laplacian electrocardiogram and moment of activation isochronal mapping. Physiological Measurement, 28(5), 515-529. doi:10.1088/0967-3334/28/5/006He, B., & Cohen, R. J. (1992). Body surface Laplacian mapping of cardiac electrical activity. The American Journal of Cardiology, 70(20), 1617-1620. doi:10.1016/0002-9149(92)90471-aLu, C.C. and Tarjan, P.P. (2002), “An ultra-high common-mode rejection ratio (CMRR) AC instrumentation amplifier for laplacian electrocardiographic measurement”,Biomedical Instrumentation and Technology, Vol. 33 No. 1, pp. 76-83.Prats-Boluda, G. , Ye-Lin, Y. , Garcia-Breijo, E. , Ibanez, J. and Garcia-Casado, J. (2012), “Active flexible concentric ring electrode for non-invasive surface bioelectrical recordings”,Measurement Science & Technology, Vol. 23 No. 12

Textile Concentric Ring Electrodes for ECG Recording Based on Screen-Printing Technology

[EN] Among many of the electrode designs used in electrocardiography (ECG), concentric ring electrodes (CREs) are one of the most promising due to their enhanced spatial resolution. Their development has undergone a great push due to their use in recent years; however, they are not yet widely used in clinical practice. CRE implementation in textiles will lead to a low cost, flexible, comfortable, and robust electrode capable of detecting high spatial resolution ECG signals. A textile CRE set has been designed and developed using screen-printing technology. This is a mature technology in the textile industry and, therefore, does not require heavy investments. Inks employed as conductive elements have been silver and a conducting polymer (poly (3,4-ethylenedioxythiophene) polystyrene sulfonate; PEDOT: PSS). Conducting polymers have biocompatibility advantages, they can be used with flexible substrates, and they are available for several printing technologies. CREs implemented with both inks have been compared by analyzing their electric features and their performance in detecting ECG signals. The results reveal that silver CREs present a higher average thickness and slightly lower skin-electrode impedance than PEDOT: PSS CREs. As for ECG recordings with subjects at rest, both CREs allowed the uptake of bipolar concentric ECG signals (BC-ECG) with signal-to-noise ratios similar to that of conventional ECG recordings. Regarding the saturation and alterations of ECGs captured with textile CREs caused by intentional subject movements, silver CREs presented a more stable response (fewer saturations and alterations) than those of PEDOT: PSS. Moreover, BC-ECG signals provided higher spatial resolution compared to conventional ECG. This improved spatial resolution was manifested in the identification of P1 and P2 waves of atrial activity in most of the BC-ECG signals. It can be concluded that textile silver CREs are more suitable than those of PEDOT: PSS for obtaining BC-ECG records. These developed textile electrodes bring the use of CREs closer to the clinical environment.Grant from the Ministerio de Economia y Competitividad y del Fondo Europeo de Desarrollo Regional. DPI2015-68397-R (MINECO/FEDER). This work was also supported by the Spanish Government/FEDER funds (grant number MAT2015-64139-C4-3-R (MINECO/FEDER)).Lidon-Roger, JV.; Prats-Boluda, G.; Ye Lin, Y.; Garcia Casado, FJ.; Garcia-Breijo, E. (2018). Textile Concentric Ring Electrodes for ECG Recording Based on Screen-Printing Technology. Sensors. 18(1):300-314. https://doi.org/10.3390/s18010300S30031418

Documentar la técnica a través de la restauración. Proceso de intervención de un ninot de falla tradicional

[EN] The paper presents the interesting process of restoration carried out in a "ninot de falla" from 1961. The fallas artist Julian Puche Ferrándiz worked for five years for the commission of the Na'Jordana, a period in which he made this sketch later would become monument. Our object has, since its creation, a specific nature: there isn´t a "indultat ninot" because it was never meant to burn, but a previous study that was subsequently saved and displayed in the at the headquarters. It is endowed with certain uniqueness, and has added elements relative to what would be a classic "ninot indultat." In turn, the quality of work is outstanding, so we have a creation that holds the values that make it worthy of preservation. On the other hand, the work makes a thorough study of traditional execution, so that is characterized invoice our object, essential process before they can undertake restoration. Thus, they have been collected and documented aspects relating to the material of the work, but also the conceptual plane, so that, once known artistic intention, the state of conservation of matter, and possible discrepancies between them, may take appropriate conservation decisions. We have also made a detailed description of the state of conservation and restoration process carried out, in order that it may be known by other restaurateurs, since the intervention on this heritage is not widely known and therefore, our contribution can have a really useful character. Finally there have been some recommendations to adopt preventive conservation, given the need to store or display the object correctly.[ES] El trabajo presenta el interesante proceso de restauración llevado a cabo en un “ninot” de falla del año 1961. El artista fallero Julián Puche Ferrándiz trabajó durante cinco años para la comisión de la falla Na Jordana, periodo en el cual realizó este boceto que posteriormente se convertiría en falla. Nuestro objeto presenta, desde el momento de su creación, una naturaleza específica: no se trata de un “ninot indultat”, ya que nunca fue concebido para arder, sino de un estudio previo que posteriormente quedó guardado y expuesto en el casal fallero. Está pues, dotado de cierta singularidad, pues presenta elementos añadidos con respecto a lo que sería un clásico “ninot de falla indultat”. A su vez, la calidad de la obra es sobresaliente, por lo que nos encontramos ante una creación que atesora los valores que la hacen merecedora de conservación. Por otro lado, el trabajo realiza un profundo estudio de la técnica de ejecución tradicional, de manera que queda caracterizada la factura de nuestro objeto, proceso imprescindible antes de poder emprender la restauración. De este modo, han quedado recogidos y documentados los aspectos que se refieren al plano material de la obra, pero también al plano conceptual, para que, una vez conocida la intención artística, el estado de conservación de la materia, y las posibles discrepancias entre ellos, pudieran tomarse las decisiones adecuadas de conservación. También hemos realizado una detallada descripción del estado de conservación y el proceso de restauración llevado a cabo, con el fin de que pueda ser conocido por otros restauradores, ya que la intervención sobre este tipo de patrimonio no es demasiado conocida y por lo tanto, nuestra aportación puede tener un carácter útil realmente. Por último se han realizado algunas recomendaciones sobre la conservación preventiva a adoptar, dada la necesidad de almacenar o exhibir el objeto correctamente.Benavent Boluda, JA.; García Serrano, Á.; Llamas Pacheco, R. (2015). Documentar la técnica a través de la restauración. Proceso de intervención de un ninot de falla tradicional. En II CONGRESO INTERNACIONAL DE INVESTIGACIÓN EN ARTE VISUALES. Editorial Universitat Politècnica de València. 1006-1012. https://doi.org/10.4995/ANIAV.2015.544OCS1006101

Evolutionary Trends in the Mitochondrial Genome of Archaeplastida: How Does the GC Bias Affect the Transition from Water to Land?

[EN] Among the most intriguing mysteries in the evolutionary biology of photosynthetic organisms are the genesis and consequences of the dramatic increase in the mitochondrial and nuclear genome sizes, together with the concomitant evolution of the three genetic compartments, particularly during the transition from water to land. To clarify the evolutionary trends in the mitochondrial genome of Archaeplastida, we analyzed the sequences from 37 complete genomes. Therefore, we utilized mitochondrial, plastidial and nuclear ribosomal DNA molecular markers on 100 species of Streptophyta for each subunit. Hierarchical models of sequence evolution were fitted to test the heterogeneity in the base composition. The best resulting phylogenies were used for reconstructing the ancestral Guanine-Cytosine (GC) content and equilibrium GC frequency (GC*) using non-homogeneous and non-stationary models fitted with a maximum likelihood approach. The mitochondrial genome length was strongly related to repetitive sequences across Archaeplastida evolution; however, the length seemed not to be linked to the other studied variables, as different lineages showed diverse evolutionary patterns. In contrast, Streptophyta exhibited a powerful positive relationship between the GC content, non-coding DNA, and repetitive sequences, while the evolution of Chlorophyta reflected a strong positive linear relationship between the genome length and the number of genes.This research was funded by the European Commission (Environment - LIFE Programme) project for the Comunidad Valenciana (Spain), LIFE05 NAT/E/000060.Pedrola-Monfort, J.; Lázaro-Gimeno, D.; Boluda, CG.; Pedrola, L.; Garmendia, A.; Soler, C.; Soriano, JM. (2020). Evolutionary Trends in the Mitochondrial Genome of Archaeplastida: How Does the GC Bias Affect the Transition from Water to Land?. Plants. 9(3):1-15. https://doi.org/10.3390/plants9030358S1159

Uterine contractile efficiency indexes for labor prediction: a bivariate approach from multichannel electrohysterographic records

[EN] Labor prediction is one of the most challenging goals in obstetrics, mainly due to the poor understanding of the factors responsible for the onset of labor. The electrohysterogram (EHG) is the recording of the myoelectrical activity of myometrial cells and has been shown to provide relevant information on the electrophysiological state of the uterus. This information could be used to obtain more accurate labor predictions than those of the currently used techniques, such as the Bishop score, tocography or biochemical markers. Indeed, a number of efforts have already been made to predict labor by this method, separately characterizing the intensity, the coupling degree of the EHG signals and myometrial cell excitability, these being the cornerstones on which contraction efficiency is built. Although EHG characterization can distinguish between different obstetric situations, the reported results have not been shown to provide a practical tool for the clinical detection of true labor. The aim of this work was thus to define and calculate indexes from multichannel EHG recordings related to all the phenomena involved in the efficiency of uterine myoelectrical activity (intensity, excitability and synchronization) and to combine them to form global efficiency indexes (GEI) able to predict delivery in less than 7/14 days. Four EHG synchronization indexes were assessed: linear correlation, the imaginary part of the coherence, phase synchronization and permutation cross mutual information. The results show that even though the synchronization and excitability efficiency indexes can detect increasing trends as labor approaches, they cannot predict labor in less than 7/14 days. However, intensity seems to be the main factor that contributes to myometrial efficiency and is able to predict labor in less than 7/14 days. All the GEls present increasing monotonic trends as pregnancy advances and are able to identify (p < 0.05) patients who will deliver in less than 7/14 days better than single channel and single phenomenon parameters. The GEI based on the permutation cross mutual information shows especially promising results. A simplified EHG recording protocol is proposed here for clinical practice, capable of predicting deliveries in less than 7/14 days, consisting of 4 electrodes vertically aligned with the median line of the uterus. (C) 2018 Elsevier Ltd. All rights reserved.The authors are grateful to Zhenhu Liang, of the Yanshan University, who provided essential information for computing the PLV and NPCMI synchronization indexes. This work was supported by the Spanish Ministry of Economy and Competitiveness and the European Regional Development Fund (DPI2015-68397-R, MINECO/FEDER).Mas-Cabo, J.; Ye Lin, Y.; Garcia-Casado, J.; Alberola Rubio, J.; Perales Marín, AJ.; Prats-Boluda, G. (2018). Uterine contractile efficiency indexes for labor prediction: a bivariate approach from multichannel electrohysterographic records. Biomedical Signal Processing and Control. 46:238-248. https://doi.org/10.1016/j.bspc.2018.07.018S2382484

Electrohysterography in the diagnosis of preterm birth: a review

This is an author-created, un-copyedited versíon of an article published in Physiological Measurement. IOP Publishing Ltd is not responsíble for any errors or omissíons in this versíon of the manuscript or any versíon derived from it. The Versíon of Record is available online at http://doi.org/10.1088/1361-6579/aaad56.[EN] Preterm birth (PTB) is one of the most common and serious complications in pregnancy. About 15 million preterm neonates are born every year, with ratios of 10-15% of total births. In industrialized countries, preterm delivery is responsible for 70% of mortality and 75% of morbidity in the neonatal period. Diagnostic means for its timely risk assessment are lacking and the underlying physiological mechanisms are unclear. Surface recording of the uterine myoelectrical activity (electrohysterogram, EHG) has emerged as a better uterine dynamics monitoring technique than traditional surface pressure recordings and provides information on the condition of uterine muscle in different obstetrical scenarios with emphasis on predicting preterm deliveries. Objective: A comprehensive review of the literature was performed on studies related to the use of the electrohysterogram in the PTB context. Approach: This review presents and discusses the results according to the different types of parameter (temporal and spectral, non-linear and bivariate) used for EHG characterization. Main results: Electrohysterogram analysis reveals that the uterine electrophysiological changes that precede spontaneous preterm labor are associated with contractions of more intensity, higher frequency content, faster and more organized propagated activity and stronger coupling of different uterine areas. Temporal, spectral, non-linear and bivariate EHG analyses therefore provide useful and complementary information. Classificatory techniques of different types and varying complexity have been developed to diagnose PTB. The information derived from these different types of EHG parameters, either individually or in combination, is able to provide more accurate predictions of PTB than current clinical methods. However, in order to extend EHG to clinical applications, the recording set-up should be simplified, be less intrusive and more robust-and signal analysis should be automated without requiring much supervision and yield physiologically interpretable results. Significance: This review provides a general background to PTB and describes how EHG can be used to better understand its underlying physiological mechanisms and improve its prediction. The findings will help future research workers to decide the most appropriate EHG features to be used in their analyses and facilitate future clinical EHG applications in order to improve PTB prediction.This work was supported by the Spanish Ministry of Economy and Competitiveness and the European Regional Development Fund under grant DPI2015-68397-R.Garcia-Casado, J.; Ye Lin, Y.; Prats-Boluda, G.; Mas-Cabo, J.; Alberola Rubio, J.; Perales Marin, AJ. (2018). Electrohysterography in the diagnosis of preterm birth: a review. Physiological Measurement. 39(2). https://doi.org/10.1088/1361-6579/aaad56S39

Comparison of non-invasive electrohysterographic recording techniques for monitoring uterine dynamics

Non-invasive recording of uterine myoelectric activity (electrohysterogram, EHG) could provide an alternative to monitoring uterine dynamics by systems based on tocodynamometer (TOCO). Laplacian recording of bioelectric signals has been shown to give better spatial resolution and less interference than mono and bipolar surface recordings. The aim of this work was to study the signal quality obtaines from monopolar, bipolar and Laplacian techniques in EHG recordings, as well as to assess their ability to detect uterine contractions. Twenty-two recording sessions were carried out on singleton pregnant women during the active phase of labour. In each session the following simultaneous recordings were obtained: internal uterine pressure (IUP), external tension of abdominal wall (TOCO) and EHG signals (5 monopolar and 4 bipolar recordings, 1 discrete aproximation to the Laplacian of the potential and 2 estimates of the Laplacian from two active annular electrodes). The results obtained show that EHG is able to detect a higher number of uterine contractions than TOCO. Laplacian recordings give improved signal quality over monopolar and bipolar techniques, reduce maternal cardiac interference and improve the signal-to-noise ratio. The optimal position for recording EHG was found to be the uterine median axis and the lower centre-right umbilical zone.Research partly supported by the Spanish Ministerio de Ciencia y Tecnologia (TEC2010-16945) and the Universitat Politecnica de Valencia (PAID 2009/10-2298). The translation of this paper was funded by the Universitat Politecnica de Valencia, Spain.Alberola Rubio, J.; Prats Boluda, G.; Ye Lin, Y.; Valero, J.; Perales Marin, AJ.; Garcia Casado, FJ. (2013). Comparison of non-invasive electrohysterographic recording techniques for monitoring uterine dynamics. Medical Engineering and Physics. 35(12):1736-1743. https://doi.org/10.1016/j.medengphy.2013.07.008S17361743351

Characterization and Enhancement of Non-Invasive Recordings of Intestinal Myoelectrical Activity

Non