227 research outputs found

    Traceability Links Recovery among Requirements and BPMN models

    Full text link
    Tesis por compendio[EN] Throughout the pages of this document, I present the results of the research that was carried out in the context of my PhD studies. During the aforementioned research, I studied the process of Traceability Links Recovery between natural language requirements and industrial software models. More precisely, due to their popularity and extensive usage, I studied the process of Traceability Links Recovery between natural language requirements and Business Process Models, also known as BPMN models. In order to carry out the research, I focused my work on two main objectives: (1) the development of the Traceability Links Recovery techniques between natural language requirements and BPMN models, and (2) the validation and analysis of the results obtained by the developed techniques in industrial domain case studies. The results of the research have been redacted and published in forums, conferences, and journals specialized in the topics and context of the research. This thesis document introduces the topics, context, and objectives of the research, presents the academic publications that have been published as a result of the work, and then discusses the outcomes of the investigation.[ES] A través de las páginas de este documento, presento los resultados de la investigación realizada en el contexto de mis estudios de doctorado. Durante la investigación, he estudiado el proceso de Recuperación de Enlaces de Trazabilidad entre requisitos especificados en lenguaje natural y modelos de software industriales. Más concretamente, debido a su popularidad y uso extensivo, he estudiado el proceso de Recuperación de Enlaces de Trazabilidad entre requisitos especificados en lenguaje natural y Modelos de Procesos de Negocio, también conocidos como modelos BPMN. Para llevar a cabo esta investigación, mi trabajo se ha centrado en dos objetivos principales: (1) desarrollo de técnicas de Recuperación de Enlaces de Trazabilidad entre requisitos especificados en lenguaje natural y modelos BPMN, y (2) validación y análisis de los resultados obtenidos por las técnicas desarrolladas en casos de estudio de dominios industriales. Los resultados de la investigación han sido redactados y publicados en foros, conferencias y revistas especializadas en los temas y contexto de la investigación. Esta tesis introduce los temas, contexto y objetivos de la investigación, presenta las publicaciones académicas que han sido publicadas como resultado del trabajo, y expone los resultados de la investigación.[CA] A través de les pàgines d'aquest document, presente els resultats de la investigació realitzada en el context dels meus estudis de doctorat. Durant la investigació, he estudiat el procés de Recuperació d'Enllaços de Traçabilitat entre requisits especificats en llenguatge natural i models de programari industrials. Més concretament, a causa de la seua popularitat i ús extensiu, he estudiat el procés de Recuperació d'Enllaços de Traçabilitat entre requisits especificats en llenguatge natural i Models de Processos de Negoci, també coneguts com a models BPMN. Per a dur a terme aquesta investigació, el meu treball s'ha centrat en dos objectius principals: (1) desenvolupament de tècniques de Recuperació d'Enllaços de Traçabilitat entre requisits especificats en llenguatge natural i models BPMN, i (2) validació i anàlisi dels resultats obtinguts per les tècniques desenvolupades en casos d'estudi de dominis industrials. Els resultats de la investigació han sigut redactats i publicats en fòrums, conferències i revistes especialitzades en els temes i context de la investigació. Aquesta tesi introdueix els temes, context i objectius de la investigació, presenta les publicacions acadèmiques que han sigut publicades com a resultat del treball, i exposa els resultats de la investigació.Lapeña Martí, R. (2020). Traceability Links Recovery among Requirements and BPMN models [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/149391TESISCompendi

    Extracción de variables forestales a partir de datos tomados con láser escáner terrestre en Sierra Espadán, Castellón

    Full text link
    [ES] La correcta gestión de los importantes espacios forestales de la Comunitat Valènciana requiere de un amplio y pleno conocimiento de su realidad. Pero la captura de esa información no es una tarea sencilla ni rápida. Los inventarios forestales pretenden mediante medidas manuales un tanto imprecisas la determinación de variables tanto arbóreas como arbustivas. Algunas de esas variables, como alturas dominantes, diámetros medios de tronco, área basimétrica, altura de inicio de copa, contenido de combustible y biomasa, se determinan mediante ecuaciones alométricas en las que intervienen algunas medidas manuales puntuales. La creciente versatilidad de los equipos láser escáner terrestre está permitiendo su uso en aplicaciones hasta ahora poco exploradas, como son las forestales. La inmensa cantidad de datos que aportan estos dispositivos permite tener unas estimaciones de las variables forestales mucho más precisas que con los métodos clásicos. Este TFG pretende explorar las vías de caracterización geométrica forestal a partir de nubes de puntos tomadas con láser escáner en parcelas circulares de 30 metros de diámetro. Se usará software libre como Computree, Cloudcompare y 3D Forest para no estar limitados por la dipsonibilidad de licencias comerciales.[EN] The correct management of the important forest areas of the Comunitat València requires a wide and full knowledge of their reality. But capturing that information is not a simple or quick task. Forest inventories seek by means of somewhat imprecise manual measures the determination of both arboreal and shrub variables. Some of these variables, such as dominant heights, mean trunk diameters, basal area, crown height, fuel content and biomass, are determined by allometric equations in which some manual point measures are involved. The growing versatility of laser scanner equipment is allowing its use in applications so far little explored, such as forestry. The immense amount of data provided by these devices allows us to have much more precise estimates of forest variables than with classical methods. This paper intends to explore the pathways of geometric forest characterization from clouds of points taken with laser scanner in circular plots of 30 meters in diameter. Free software such as Computree and Cloudcompare will be used in order not to be limited by the dipsi - ability of commercial licenses.[CA] La correcta gestió dels importants espais forestals de la Comunitat Valenciana requereix d’un ampli i ple coneixement de la seua realitat. Però la captura d’aquesta informació no es una tarea fàcil ni ràpida. Els investaris forestals pretenen obtindre per mig de mesures manuals, un tant imprecises, l’adquisició de variables asociades tant als arbres com als arbustos. Alguna d’aquestes variables son les altures dominants, el diàmetre mig dels troncs, l’àrea basimètrica, l’altura de l’inici de les copes dels arbres, el contingut de combustible i la biomasa, les quals son determinades per mig d’equacions alomètriques en les que intervenen algunes medides manuals puntuals. La creixent versatilitat dels equips làser escáner en el terreny esta permitint el seu ús en aplicacions fins ara inexplorades, com son les forestals.La inmensa quantitat de dades que ofereix aquestos dispositius permeteix tindre unes estimacions de les variables forestal molt mes precisos que la metodología clàsica. Aquest treball de fi de grau preten explorar les vies de propietats geomètriques forestals a partir de nuvols de punts obteses amb làser escáner dins de parceles circulars de 30 metres de diàmetre. S’usarà software lliure com CompuTree, CloudCompare i MatLAB per no estar limitat per la disponibilitat de la llicènciaMartí Sanfeliu, R. (2017). Extracción de variables forestales a partir de datos tomados con láser escáner terrestre en Sierra Espadán, Castellón. Universitat Politècnica de València. http://hdl.handle.net/10251/82302TFG

    The Influence of Energy Certification on Housing Sales Prices in the Province of Alicante (Spain)

    Get PDF
    This work examines the implementation of energy labelling by the residential real estate sector. First, it considers the interest by real estate sellers in not publishing energy certification information, and then, it quantifies the impact of the housing’s energy certification on the asking price. The results are compared with those obtained from other studies conducted in distinct European countries. The study’s final sample was collected, including information from 52,939 multi-family homes placed on the real estate market in the province of Alicante (Spain). One-way analysis of variance (ANOVA) was used, as well as an ordinary least squares regression model. This study highlights the fact that, in the current market, owners and sellers have no incentive to reveal the energy certification, since this permits them to sell homes with low energy ratings at prices similar to those of more energy efficient homes. In addition, it was found that homes with better energy ratings (letters A and B) are not sold at higher prices than homes with other rating letters, unlike the case of other European countries that were examined.This research and the ACP were partially funded by Universidad de Alicante (http://dx.doi.org/10.13039/100009092)

    Characteristics and emplacement mechanisms of the Coranzulí ignimbrites (Central Andes)

    Get PDF
    We present a detailed stratigraphy of the Coranzulí caldera-forming deposits. This caldera, located in the Altiplano-Puna Volcanic Complex (Central Andes), generated four ignimbrite deposits with similar field characteristics and facies that differ from each other in, above all, the nature of the lithic fragments they contain. Three different lithofacies (fine-grained cross-stratified facies, massive lithic breccia facies and massive ignimbrite facies) are found in all the ignimbrite deposits, which occasionally also contain a lenticular lithic-rich facies and/or a pumice-rich facies. These field characteristics and, in particular, local deposit thicknesses were used to develop a theoretical model of the dynamics and emplacement mode of the Coranzulí pyroclastic flows. Our results show that these ignimbrites were emplaced by dense pyroclastic density currents subjected to high accumulation rates and velocities, thereby indicating rapid en masse emplacement that was also influenced by local paleotopography as deduced from facies analysis.Fil: Guzman, Silvina Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Bio y Geociencias del NOA. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Museo de Ciencias Naturales. Instituto de Bio y Geociencias del NOA; ArgentinaFil: Doronzo, Domenico M.. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias de la Tierra Jaume Almera; EspañaFil: Martí, Joan. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias de la Tierra Jaume Almera; EspañaFil: Seggiaro, Raúl. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Bio y Geociencias del NOA. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Museo de Ciencias Naturales. Instituto de Bio y Geociencias del NOA; Argentin

    High throughput FT-MIR analysis of sugars and acids in watermelon

    Get PDF
    Indirect measurements of taste-related compounds are required when a high number of samples has to be analyzed in a short period of time, with a minimum cost. For this purpose, FT-MIR partial least square (PLS) regression models for the prediction of total soluble solids, sugars and organic acids have been developed using three sample sets including breeding lines and commercial varieties of watermelon. Specific models with excellent performance were obtained only for sugars. Nevertheless, a general model supposed a compromise between the best and worse models and offered %RMSEP values of 11.3%, 11.1% and 11.7% for fructose, glucose and sucrose respectively. The model was applied to the selection of high content samples (selection pressure 20% and 30%) obtaining good sensitivity levels and mean percentile of selected samples close to the expected values (100% sensitivity). The robustness of FT-MIR models was assessed with predictions of external assays, obtaining reasonable performances

    First Case of a Cerebrocortical Ganglioglioma in a Dog

    Get PDF
    Gangliogliomas are extremely rare tumors of the nervous system composed of neoplastic glial and neuronal cells. The aim of the present paper is to describe the clinical presentation, magnetic resonance imaging (MRI) findings and histopathological and immunophenotypical characteristics of a cerebral cortex ganglioglioma in a 7-year-old Border Collie. The dog presented an acute onset of tonic-clonic epileptic seizures. MRI revealed a well-defined large intra-axial mass located on the left forebrain, mainly affecting the frontal cortex. Following humane euthanasia, the histopathological examination of the mass revealed a diffuse proliferation of neoplastic glial cells mixed with anomalous neuronal bodies. Immunohistochemical analyses confirmed the presence of two different populations of neoplastic cells. Most neoplastic glial cells were immunoreactive to glial fibrillary acidic protein (GFAP) and the other subset of neoplastic cells were positive to neuronal markers such as PGP 9.5, synaptophysin (SYN) and neuron-specific enolase (NSE), suggestive of neuronal cells. These findings confirmed the diagnosis of a cerebrocortical ganglioglioma. To the authors knowledge, this is the first description of a ganglioglioma of the cerebral cortex in a dog

    Fast simultaneous determination of prominent polyphenols in vegetables and fruits by reversed phase liquid chromatography using a fused-core column

    Get PDF
    A reversed-phase high-performance liquid chromatography method with photodiode array detection has been developed enabling the joint determination of 17 prominent flavonoids and phenolic acids in vegetables and fruits. A multi-segmented gradient program using a fused-core column for the separation of several phenolic classes (phenolic acids and flavonoids) has been optimised. The influence of extraction conditions (sample freeze-drying, ultrasound extraction, solvent composition and extraction time) has been also optimised using response surface methodology with tomato samples as a model. Complete recoveries (76–108%) were obtained for the phenolic compounds present in tomato. The developed method provided satisfactory repeatability in terms of peak area (RSD < 2.9%) and retention time (RSD < 0.2%) both for standards and real samples. Detection limits ranged between 3 and 44 μg kg−1 for the detected polyphenols. This method is recommended for routine analysis of large number of samples typical of production quality systems or plant breeding programs

    Evaluating the potential use of a dairy industry residue to induce denitrification in polluted water bodies: a flow-through experiment

    Get PDF
    Improving the effectiveness and economics of strategies to remediate groundwater nitrate pollution is a matter of concern. In this context, the addition of whey into aquifers could provide a feasible solution to attenuate nitrate contamination by inducing heterotrophic denitrification, while recycling an industry residue. Before its application, the efficacy of the treatment must be studied at laboratory-scale to optimize the application strategy in order to avoid the generation of harmful intermediate compounds. To do this, a flow-through denitrification experiment using whey as organic C source was performed, and different C/N ratios and injection periodicities were tested. The collected samples were analyzed to determine the chemical and isotopic composition of N and C compounds. The results proved that whey could promote denitrification. Nitrate was completely removed when using either a 3.0 or 2.0 C/N ratio. However, daily injection with C/N ratios from 1.25 to 1.5 seemed advantageous, since this strategy decreased nitrate concentration to values below the threshold for water consumption while avoiding nitrite accumulation and whey release with the outflow. The isotopic results confirmed that nitrate attenuation was due to denitrification and that the production of DIC was related to bacterial whey oxidation. Furthermore, the isotopic data suggested that when denitrification was not complete, the outflow could present a mix of denitrified and nondenitrified water. The calculated isotopic fractionation values (ε15NNO3/N2 and ε18ONO3/N2) might be applied in the future to quantify the efficiency of the bioremediation treatments by whey application at field-scale

    Underwater Wireless Communications for Cooperative Robotics with UWSim-NET

    Get PDF
    The increasing number of autonomous underwater vehicles (AUVs) cooperating in underwater operations has motivated the use of wireless communications. Their modeling can minimize the impact of their limited performance in real-time robotic interventions. However, robotic frameworks hardly ever consider the communications, and network simulators are not suitable for HIL experiments. In this work, the UWSim-NET is presented, an open source tool to simulate the impact of communications in underwater robotics. It gathers the benefits of NS3 in modeling communication networks with those of the underwater robot simulator (UWSim) and the robot operating system (ROS) in modeling robotic systems. This article also shows the results of three experiments that demonstrate the capabilities of UWSim-NET in modeling radio frequency (RF) and acoustic links in underwater scenarios. It also permits evaluating several MAC protocols such as additive links online Hawaii area (ALOHA), slotted floor acquisition multiple access (S-FAMA) and user defined protocols. A third experiment demonstrated the excellent capabilities of UWSim-NET in conducting hardware in the loop (HIL) experiments

    Numerical modeling of enhanced biodenitrification in a laboratory flow-through experiment

    Get PDF
    High concentration of nitrate (NO3) in water resources has become a widespread and important environmental contaminant, being anthropogenic nitrogen input the principal source of NO3− pollution (Arauzo, 2017). Underanaerobic conditions, microbial reduction of NO3 to N2(g) to oxidize dissolved organic carbon (DOC) is the principal NO3 attenuation process in groundwater aquifers (Matchett et al., 2019)
    • …
    corecore