Recursos de colección

RiuNet. Repositorio institucional de la Universitat de Valencia (73.332 recursos)

RiuNet es el Repositorio Institucional de la Universitat Politècnica de València, gestionado por la Biblioteca, cuyo objetivo es ofrecer acceso en Internet a la producción científica, académica y corporativa de la comunidad universitaria con la finalidad de aumentar su visibilidad y hacerla accesible y preservable.

Mostrando recursos 1 - 20 de 25

  1. Window repositioning for Printed Arabic Recognition

    Ihab Alkhoury; Giménez Pastor, Adrián; Alfons Juan; Andrés Ferrer, Jesús
    Bernoulli HMMs are conventional HMMs in which the emission probabilities are modeled with Bernoulli mixtures. They have recently been applied, with good results, in off-line text recognition in many languages, in particular, Arabic. A key idea that has proven to be very effective in this application of Bernoulli HMMs is the use of a sliding window of adequate width for feature extraction. This idea has allowed us to obtain very competitive results in the recognition of both Arabic handwriting and printed text. Indeed, a system based on it ranked first at the ICDAR 2011 Arabic recognition competition on the Arabic...

  2. Temperature modulates the vitellogenesis progression in European eel

    Mazzeo, Ilaria; Peñaranda, D.S.; Gallego Albiach, Victor; Baloche, Sylvie; Nourizadeh-Lillabadi, Rasoul; Tveiten, H.; Dufour, Sylvie; Asturiano Nemesio, Juan Francisco; Weltzien, Finn-Arne; Pérez Igualada, Luz María
    [EN] Wild female European eels were matured with CPE (carp pituitary extract) under three thermal regimes, two of which were variable (T10–15 and T15–18, moving from 10 to 15 °C and from 15 to 18 °C, respectively) and one constant, at 18 °C (T18). Before and during hormonal treatment, the eels were sampled and biometric measurements were taken. Immunoassays of sex steroids and vitellogenin were performed, as well as qPCR analyses of gene expression (ovarian cyp19a1) and ovarian histology. Prior to the hormonal treatment, the silver eels which had been maintained at 18 °C showed lower 11-KT and E2 plasma levels compared to those maintained at...

  3. On the modification of binarization algorithms to retain grayscale information for handwritten text recognition

    Mauricio Villegas; Romero Gómez, Verónica; Sánchez Peiró, Joan Andreu
    The final publication is available at Springer via

  4. Improving the minimum description length inference of phrase-based translation models

    González Rubio, Jesús; Casacuberta Nolla, Francisco
    The final publication is available at Springer via

  5. Applying basic features from sentiment analysis on automatic irony detection

    Hernández Farías, Irazú; Benedí Ruiz, José Miguel; Rosso, Paolo
    The final publication is available at Springer via

  6. Au@UiO-66: a base free oxidation catalyst

    Leus, K; Concepción Heydorn, Patricia; Vandichel, M.; Meledina, M.; Grirrane, Abdessamad; Esquivel, D.; Turner, S.; Poelman, D.; Waroquier, M.; Van Speybroeck, V.; Van Tendeloo, G.; García Gómez, Hermenegildo; Van Der Voort, P.
    We present the in situ synthesis of Au nanoparticles within the Zr based Metal Organic Framework, UiO-66. The resulting Au@UiO-66 materials were characterized by means of N-2 sorption, XRPD, UV-Vis, XRF, XPS and TEM analysis. The Au nanoparticles (NP) are homogeneously distributed along the UiO-66 host matrix when using NaBH4 or H-2 as reducing agents. The Au@UiO-66 materials were evaluated as catalysts in the oxidation of benzyl alcohol and benzyl amine employing O-2 as oxidant. The Au@MOF materials exhibit a very high selectivity towards the ketone (up to 100%). Regenerability and stability tests demonstrate that the Au@UiO-66 catalyst can be...

  7. Guiding Classical Biological Control of an Invasive Mealybug Using Integrative Taxonomy

    Beltrà Ivars, Aleixandre; Addison, Pia; Ávalos Masó, Juan Antonio; Crochard, Didier; Garcia Marí, Ferran; Guerrieri, Emilio; Giliomee, Jan H.; Malausa, Thibaut; Navarro Campos, Cristina; Palero, Ferran; Soto Sánchez, Antonia Isabel
    The analysed sequences were deposited in Genbank under accession numbers KP771926-KP771972. Mealybug slides are available at the Polytechnic University of Valencia (Valencia, Spain). Parasitoid slides are deposited at Università degli Studi di Napoli Federico II (Portici, Italy).

  8. Determination of photostability, biocompatibility and efficiency as photo-Fenton auxiliaries of three different types of soluble bio-based substances (SBO)

    Gomis, Juan; Gonçalves, Mayara G.; Vercher Aznar, Rosa; Sabater Marco, Consuelo; Castillo López, Mª Ángeles; Alessandra Bianco prevot; Amat Payá, Ana María; Arqués Sanz, Antonio
    [EN] The aim of this work is to determine the photostability biocompatibility and efficiency of water soluble bio-based substances (SBO) in photo-oxidative processes for wastewater treatment. Three batches of SBO, isolated from different sources, have been investigated. Differences in the functional groups present in these substances can explain major trends in their physical/chemical properties. Bioassays have proven those materials to be non-toxic but to show poor biodegradability. Their ability to enhance a photo-Fenton process at milder pH (5.2) has been investigated using a mixture of emerging compounds in wastewaters. All the tested SBO were able to remove all pollutants in...

  9. Transient thermal model of a vehicle's cabin validated under variable ambient conditions

    Torregrosa Jaime, Barbara; Bjurling, Filip; Corberán Salvador, José Miguel; Di Sciullo, Fausto; Payá Herrero, Jorge
    This paper presents a lumped-parameter thermal model of the passengers' compartment of a vehicle. The model is completely dynamic and has been thoroughly validated under variable ambient conditions including solar radiation. The proposed model reproduces accurately the warm-up and cool-down of the cabin and can help analyse capacity reduction actions for air-conditioning systems. In this study, the thermal loads have been calculated by means of the model. For the tested minibus in real outdoor conditions, air renewal represents from 7% up to 53% of the thermal load, while the solar radiation accounts for 18% 31%. According to the results, a decrease...

  10. Extending MAM5 Meta-Model and JaCalIVE Framework to Integrate Smart Devices from Real Environments

    Rincón Arango, Jaime Andrés; Poza Luján, José Luis; Julian Inglada, Vicente Javier; Posadas Yagüe, Juan Luís; Carrascosa Casamayor, Carlos
    This paper presents the extension of a meta-model (MAM5) and a framework based on the model (JaCalIVE) for developing intelligent virtual environments. The goal of this extension is to develop augmented mirror worlds that represent a real and virtual world coupled, so that the virtual world not only reflects the real one, but also complements it. A new component called a smart resource artifact, that enables modelling and developing devices to access the real physical world, and a human in the loop agent to place a human in the system have been included in the meta-model and framework. The proposed...

  11. Chemical spray pyrolysis of β-In2S3 thin films deposited at different temperatures

    SALL, THIERNO; Marí Soucase, Bernabé; Mollar García, Miguel Alfonso; Hartitti, Bouchaib; Fahoume, Mounir
    In2S3 thin films were deposited onto indium tin oxide-coated glass substrates by chemical spray pyrolysis while keeping the substrates at different temperatures. The structures of the sprayed In2S3 thin films were characterized by X-ray diffraction (XFD). The quality of the thin films was determined by Raman spectroscopy. Scanning electron microscopy (SEM) and atomic force microscopy were used to explore the surface morphology and topography of the thin films, respectively. The optical band gap was determined based on optical transmission measurements. The indium sulfide phase exhibited a preferential orientation in the (0, 0, 12) crystallographic direction according to the XRD analysis. The phonon vibration modes determined...

  12. Desarrollo de modelos de idoneidad de hábitat para la trucha balcánica (Salmo fariodes, Karaman) y estimación de caudales ecológicos en ríos de montaña de Grecia

    Papadaki, Christina; Muñoz Mas, Rafael; Ntoanidis, Lazaros; Martínez Capel, Francisco; Zogaris, Stamatis; Dimitriou, Elias
    Esta investigación, enmarcada en el proyecto ECOFLOW (Grecia), está enfocada a la estimación de caudales ecológicos en ríos de Grecia. La alteración hidrológica y la degradación de los hábitats fluviales han sido escasamente estudiados en este país, y permanecen aún fuera de su legislación. En este trabajo se aplicó el enfoque de la simulación del hábitat físico, basado en simulación hidráulica y del hábitat. Por primera vez para la trucha balcánica occidental (Salmo fariodes, Karaman) adulta, se realizó un modelo de idoneidad del hábitat multivariante (a escala de microhábitat) mediante modelos generalizados aditivos (GAM). Dichos adultos escogían principalmente los microhábitats con escasa...

  13. Support vector machine classifier for diagnosis in electrical machines: Application to broken bar

    Matic, Dragan; Kulic, Filip; Pineda Sánchez, Manuel; Kamenko, Ilija
    This paper presents a support vector machine classifier for broken bar detection in electrical induction machine. It is a reliable online method, which has high robustness to load variations and changing operating conditions. The phase current is only physical value to be measured. The steady state current is analyzed for broken bar fault via motor current signature analysis technique based on Hilbert transform. A two dimensional feature space is proposed. The features are: magnitude and frequency of characteristic peak extracted from spectrum of Hilbert transform series of the phase current. For classification task support vector machine is used due to...

  14. Design, Development and Assessment of Control Schemes for IDMS in a Standardized RTCP-based Solution

    MONTAGUD AGUAR, MARIO; Boronat Segui, Fernando; Stokking, Hans; Cesar, Pablo
    Currently, several media sharing applications that allow social interactions between distributed users are gaining momentum. In these networked scenarios, synchronized playout between the involved participants must be provided to enable truly interactive and coherent shared media experiences. This research topic is known as Inter-Destination Media Synchronization (IDMS). This paper presents the design and development of an advanced IDMS solution, which is based on extending the capabilities of RTP/RTCP standard protocols. Particularly, novel RTCP extensions, in combination with several control algorithms and adjustment techniques, have been specified to enable an adaptive, highly accurate and standard compliant IDMS solution. Moreover, as different...

  15. Comparison of different model solutions to simulate membrane fouling in the ultrafiltration of a secondary effluent from a municipal wastewater treatment plant

    TORA GRAU, MIRIAM; Soler Cabezas, José Luis; Vincent Vela, Maria Cinta; Mendoza Roca, José Antonio; Martínez Francisco, Francisco Juan
    The quality of the secondary treatment effluent (STE) from a municipal wastewater treatment plant (MWWTP) is not good enough for some applications such as agriculture. Membrane ultrafiltration (UF) has been proven to be a reliable tertiary treatment to achieve the needed water quality. The productivity of the UF processes depends on the membrane fouling. The aim of this work is to prepare a model wastewater that could mimic the fouling trend of a STE wastewater from a MWWTP. Several model wastewaters consisting of different proteins and carbohydrates were used in the UF experiments. UF was also performed with a STE....

  16. Language model adaptation for lecture transcription by document retrieval

    Martínez-Villaronga, Adrià; Del Agua Teba, Miguel Angel; Silvestre Cerdà, Joan Albert; Andrés Ferrer, Jesús; Juan, Alfons
    The final publication is available at Springer via

  17. Propylene epoxidation with in situ generated H2O2 in supercritical conditions

    Prieto Arnal, Alejandro; Palomino Roca, Miguel; DÍAZ MORALES, URBANO MANUEL; Corma Canós, Avelino
    Several bi-functional materials based on palladium nanoparticles supported onto nanocrystalline tita-nium silicalite zeolite (Pd@TS-1) were prepared and used as active and reusable catalysts to direct POproduction from hydrogen, oxygen and propylene through one-pot two-step combined process. Thistype of catalysts was able to carry out the consecutive process where palladium nanoparticles catalyzed the formation of H2O2that was used as intermediate reagent for propylene epoxidation catalyzed byTS-1 nanocrystals, used as supporting active matrix. Influence of supercritical CO2conditions in batch reactions was evaluated together with the associated effect due to the presence of platinum promoters (Pd(Pt)@TS-1). Other reaction parameters were also considered, such...

  18. Improvement of the electrochemical behaviour of Zn-electroplated steel using regenerated Cr(III) passivation baths

    García Antón, José; Fernández Domene, Ramón Manuel; Sánchez Tovar, Rita; ESCRIVÁ CERDÁN, CLARA; LEIVA GARCÍA, RAFAEL; García, Verónica; Urtiaga, Ane
    Conversion coatings based on trivalent chromium are more sensitive to the presence of zinc and iron impurities than the chromate formulations. This fact contributes to a decrease in the quality of passivation and to the generation of a significant amount of hazardous liquid waste. Recently, a new eco-innovative process based on Emulsion Pertraction Technology (EPT) is being implemented at industrial scale for selectively removing Zn and Fe from spent passivation baths in order to enhance the lifetime of the Cr (III) baths. In this study, the effect of Zn and Fe removal on the electrochemical behaviour of Zn-electroplated steel samples...

  19. Ambient and fire behavior of eccentrically loaded elliptical slender concrete-filled tubular columns

    Espinós Capilla, Ana; Romero, Manuel L.; Portolés Flag, Jose Manuel; Hospitaler Pérez, Antonio
    This paper presents the results of an experimental program carried out on slender elliptical hollow section columns filled with concrete. Given the reduced number of experimental results found in the literature on concrete filled tubular columns with elliptical cross-section, the main objective of this paper is to compare the behavior of such innovative cross-sections under ambient and high temperatures. The test parameters covered in this experimental program were the load eccentricity (0, 20 and 50 mm) and the type of infill (plain concrete or bar-reinforced concrete). Six room temperature tests were performed, while other six tests were carried out at...

  20. Overview of the 3rd International Competition on Plagiarism Detection

    Potthast, Martin; Eiselt1, Andreas; Barrón Cedeño, Luis Alberto; Stein, Benno; Rosso, Paolo
    This paper overviews eleven plagiarism detectors that have been developed and evaluated within PAN’11. We survey the detection approaches developed for the two sub-tasks “external plagiarism detection” and “intrinsic plagiarism detection,” and we report on their detailed evaluation based on the third revised edition of the PAN plagiarism corpus PAN-PC-11.

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