Jaume I University

Repositori Institucional de la Universitat Jaume I
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    La elocuencia de la arquitectura. Invención, ejecución y fruición de los programas iconográficos del tardo-barroco valenciano (1693-1792)

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    Doctorat internacionalEntre 1693 y 1792 las superficies de los templos y palacios del territorio valenciano fueron sometidas a las necesidades del mensaje que se procuró transmitir a través de ellos. Se convirtieron, pues, en meros soportes para discursos de carácter visual que, como sus homólogos retóricos, fueron el resultado de la invención de los contenidos y tipos iconográficos, de la disposición en el espacio mediante técnicas inusitadas y de la trasmisión al público. La presente tesis doctoral pretende analizar estos fenómenos, cuyo desarrollo cronológico protagoniza los cinco capítulos que componen el primer tomo. El segundo está compuesto por dos apéndices: el iconográfico, en el cual los conjuntos decorativos más destacados de este estudio se analizan según el método iconográfico, y el apéndice documental, donde se transcriben doce documentos inéditos.Between 1693 and 1792 Valencian territory temples and palaces surfaces were hidden by decorative programs that ensured to convey specific and original messages. Therefore, the buildings became mere supports for visual discourses that, like their rhetorical counterparts, were the result of a careful process of the iconographic contents and types invention, their positioning in the space using unusual techniques and their transmission to the public. This doctoral thesis aims to offer an exhaustive analysis of this phenomenon, which is examined diachronically throughout the five chapters that make up its first volume. The second consists of two appendices: the iconographic one, in which the most prominent decorative complexes are analysed according to the iconographic method, and the documentary appendix, where twelve unpublished documents are transcribed.Programa de Doctorat en Història de l'Ar

    A dynamical mathematical model for crime evolution based on a compartmental system with interactions

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    We use data on imprisonment in Spain to fit a system of three ordinary differential equations that describes the temporal evolution of three different groups in the country: offenders that are not in prison, offenders that are in prison, and the rest of people. These remaining people are considered as susceptible, who may become offenders by their relationships. That is, crime is regarded to behave as a social epidemic. We first investigate the dynamics of the model to find out when criminality becomes extinct or endemic in the long run, depending on the basic reproduction number. Then, we estimate the parameters of the model and conduct a sensitivity analysis. Finally, a random error is incorporated, and nonlinear regression is carried out to gather the unexplained variability of the data. Our results report a satisfactory model fitting to the crime data, closely delineating their dynamics

    Análisis del impacto de la exposición al idioma fuera del aula en la escritura de los estudiantes

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    The impact of language exposure on language learning is acknowledged (Pujadas & Muñoz, 2020; Pattemore & Muñoz, 2020), but few studies have addressed its influence on writing (Strobl & Baten, 2021). This study examines how English exposure beyond the classroom relates to student writing. A total of n = 40 participants (n = 20 with B2 level; n = 20 with C2 level) participated in the study. The study follows a mixed methods research approach and data were collected, on one hand, by means of a questionnaire adapted from Lasagabaster & Huguet, (2007) and a written composition that was analyzed using Jacobs et al.', (1981) taxonomy. On the other hand, semi-structured interviews were conducted with ten of the participants. Findings show that English exposure outside of school has a positive connection with writing scores. Moreover, a positive association exists between students’ engagement in out-of-school activities and their writing scores. Besides, interviews reveal individual differences that influence activity engagement, subsequently impacting writing scores. These findings suggest that combining language exposure with out-of-school engagement is beneficial for language learning.El impacto de la exposición al idioma en el aprendizaje del idioma es reconocido (Pujadas y Muñoz, 2020; Pattemore y Muñoz, 2020), pero pocos estudios han abordado su influencia en la escritura (Strobl y Ba-ten, 2021). Este estudio examina cómo la exposición al inglés fuera del aula se relaciona con la escritura de los estudiantes. Un total de n = 40 participantes (n = 20 con un nivel B2; n = 20 con un nivel C2) participa-ron en el estudio. El estudio sigue un enfoque de investigación de mé-todos mixtos y los datos fueron recopilados, por un lado, mediante un cuestionario adaptado de Lasagabaster y Huguet (2007) y una com-posición escrita que se analizó utilizando la taxonomía de Jacobs et al. (1981). Por otro lado, también se realizaron entrevistas semiestructu-radas. Los resultados muestran que la exposición al inglés fuera de la escuela tiene una conexión positiva con las puntuaciones de escritura. Además, existe una asociación positiva entre la participación de los estudiantes en actividades fuera de la escuela y sus puntuaciones de escritura. Las entrevistas revelan diferencias individuales que influyen en la participación en actividades. El estudio sugiere combinar la ex-posición al idioma en el aula con la participación fuera de la escuela

    Experimental tuning of PI controllers with symmetric send-on-delta sampling from the step response

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    This paper proposes a technique for tuning PI controllers with symmetric send-on-delta (SSOD) sampling,using three measurements taken from the step response. The tuning procedure is based on a previouslypublished experimental PI tuning method developed for standard sampling and the adaptation of thismethod to the SSOD sampling case. It is well known that the SSOD sampling strategy may induce per-manent oscillations in the closed loop if the controller is not designed properly. The proposed approachavoids those oscillations through fixing some limitations in the tuning parameters using only the experi-mental step response measurements as input data. The result is an experimental PI tuning method, basedonthreesimplemeasurementsinthestepresponse,thatguaranteestheabsenceofoscillationswhenSSODsampling is used in the loop

    Gender differences in social preferences: experimental evidence

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    Doctorat internacionalThis thesis sheds light on the relevance of gender differences that are consistently found on economic experiments under diverse contexts. Gender (here understood as biological sex) is a crucial element determining individuals’ behaviour, but there are other factors such as preferences driving the gender difference. These should always be considered and examined. Additionally, we prove it is not only my gender that influences my decisions, but also the gender of the others. In this sense, presenting subjects with a social cue about the gender of their opponent affects individual decisions. Finally, feeling observed by others leads to a reduction of antisocial behaviour and, also in this case, both the gender of the observer and the gender of the decision maker determine behaviour. The evidence obtained in this thesis can be applied to real-world situations presented in our daily lifes, related to any type of prosocial or antisocial decision framing.Programa de Doctorat en Economia i Empres

    Assessing circularity in organisations. Measurement, monitoring and communication in the university context.

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    Compendi d'articles.The transition to a circular economy represents one of the most significant challenges for society. Educational institutions, as organisations dedicated to education, research and community services, play a key role in promoting and adopting circular economy models. Therefore, they require methods to quantify and monitor their level of circularity. In recent years, various methods to assess circularity in organisations have been developed. However, these generic methods do not consider the specific characteristics of universities. In this context, the aim of this thesis is to develop a useful method to measure the level of circularity, evaluate its progress, identify improvement potentials and propose circularity strategies. The proposal is based on a set of 82 indicators, with their corresponding metrics, designed considering the particularities of universities. In addition, these indicators are modelled in an assessment tool called CExUNV which assists in decision-making and generates a concise and complete report of results.Programa de Doctorat en Tecnologies Industrials i Material

    Key factors influencing knowledge acquisition through game-based learning

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    This research enriches the current understanding of digital marketing knowledge acquisition through game-based learning (GBL). The study is based on a sample of 476 participants who provided data before and after playing The Ecommerce Game(™). In this serious game, players must optimize the conversion rate of an e-commerce venture. Data on key variables measuring players' digital marketing knowledge were collected. Before playing the game, participants reported on their perceived ease of use, perceived usefulness, and attitude. After the game, participants' knowledge, motivation, enjoyment, and concentration were measured. The purpose of this study was to determine the positive impact of GBL on the professional development of participants. Participants reported that the skills acquired in GBL improved their professional performance. Thus, the results suggest that acceptance of a game can be an effective tool for players to acquire knowledge of digital marketing and e-commerce. The motivation from gameplay was significant in aiding participants' learning experiences. Encouragingly, participants expressed a willingness to replay the game, emphasizing the enjoyableness of the learning process

    Influence of subcooling in R-449A supermarket refrigeration system and screening of refrigerant mixtures for its energetic and environmental improvement

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    Current demands of the cooling sector are focused on using refrigerants with a low Global Warming Potential (GWP) and increasing energy efficiency in vapour compression installations. The main objectives of this paperwork arise from these needs, in which the use of subcooling in an R-449A commercial refrigeration system is evaluated. In addition, eco-friendly alternative refrigerants are proposed and studied. Firstly, the effect of an integrated type of subcooling is semi-empirically analysed with Engineering Equation Solver (EES). Then, the refrigeration system’s operation is simulated using low-GWP alternative refrigerants, R-454C and R-290, which have been scarcely studied in commercial refrigeration systems due to their safety classification. Moreover, new refrigerant mixtures are searched from the binary and ternary combination of pure refrigerants using the software REFPROP. The best refrigerant with safety classification A1, A2L, and A2/A3, for both medium temperature (MT) and low temperature (LT) systems is obtained from this search. After their determination, the supermarket’s operation is simulated with these refrigerants. Finally, an environmental assessment is performed. The highest energy efficiency is obtained with R-152a for the MT system and the R-290/R-1270 mixture for the LT system. However, the highest reduction of GHG emissions is achieved by R-290, with a reduction of 73.78 % with respect to the baseline system.Funding for open access charge: CRUE-Universitat Jaume IThis scientific publication is part of the R + D + i project PID2020-117865RB-I00, funded by MCIN/AEI/10.13039/501100011033, and UJI-A2022-03, funded by Universitat Jaume I. Adrián Mota-Babiloni acknowledges contract IJC2019-038997-I, funded by MCIN/AEI/10.13039/501100011033. Cosmin Mihai Udroiu acknowledges grant PRE2021-097369 funded by MCIN/AEI/10.13039/501100011033 and by “ESF Investing in your future”. Pau Giménez-Prades acknowledges grant CIACIF/2021/182, funded by the Generalitat Valenciana (GV) and the European Social Fund (ESF)

    General framework for re-assuring numerical reliability in parallel Krylov solvers: A case of bi-conjugate gradient stabilized methods

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    Parallel implementations of Krylov subspace methods often help to accelerate the procedure of finding an approximate solution of a linear system. However, such parallelization coupled with asynchronous and out-of-order execution often makes more visible the non-associativity impact in floating-point operations. These problems are even amplified when communication-hiding pipelined algorithms are used to improve the parallelization of Krylov subspace methods. Introducing reproducibility in the implementations avoids these problems by getting more robust and correct solutions. This paper proposes a general framework for deriving reproducible and accurate variants of Krylov subspace methods. The proposed algorithmic strategies are reinforced by programmability suggestions to assure deterministic and accurate executions. The framework is illustrated on the preconditioned BiCGStab method and its pipelined modification, which in fact is a distinctive method from the Krylov subspace family, for the solution of non-symmetric linear systems with message-passing. Finally, we verify the numerical behavior of the two reproducible variants of BiCGStab on a set of matrices from the SuiteSparse Matrix Collection and a 3D Poisson’s equation

    Dubbing as a tool for the integration of older people and language transmission

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    This paper addresses the first stage of a three-year project developed in the community of Santo Amaro — Sao Tome and Principe — where many older people are living in circumstances of exclusion or risk of exclusion. Based on an understanding of language as an essential element of culture, dubbing is presented as a playful and attractive initiative for all generations, allowing them to socialise with one another and contribute to the transmission of Forro Creole, and also serving to integrate the older people into the wider community. We started by designing a series of questionnaires to measure participants’ attitudes towards the language and its speakers. Secondly, groups of children and older people were organised to dub cartoons into Forro. Finally, the groups of children were surveyed again to learn about how they experienced these activities in terms of language and intergenerational interaction. We found that dubbing enhances socialisation between the participating older people and children, introduces Forro Creole to the youngest generation, and facilitates a change in the perception of Creoles and their speakers — mainly older people. It is also a useful tool for enhancing the well-being and integration of older people within coordinated projects for sustainable development cooperation in the community

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    Repositori Institucional de la Universitat Jaume I is based in Spain
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