High temperature hydrogen attack (HTHA) is a damage mechanism that only affects carbon steel and low alloy material. Most of the data regarding HTHA are experimental-driven. Even though this approach has been successful, there are still much more things that the oil and gas industry does not understand about HTHA. The regions that were considered safe (below the Nelson curves) have experienced catastrophic failure. Our research consists of performing Molecular Dynamics (MD) and the Nudge Elastic Band (NEB) calculation of HTHA to better understand the atomistic behavior of this damage mechanism.

個人防災の充実は、近年の重要な社会的な課題である。本研究は、社会規範のうち、記述的規範が防災行動に及ぼす影響を検討した。多数の他者が実際にある行動をとっているという情報にもとづく記述的規範は、たしかに防災行動を促進させられることが示された。しかし記述的規範は、一定数の少数の他者が防災行動をとっていないという副次的な情報も伝達してしまう。そのため、受け手の態度によっては、記述的規範が望ましい行動を抑制してしまう危険性があることも示された。 / Promoting personal disaster preparation is an important social issue in recent years. This study examined the effect of descriptive norms on disaster prevention behavior. Descriptive norms based on information about the actual behavior of a large number of others can indeed promote disaster-prevention behavior. However, the descriptive norms also convey secondary information that a certain small number of others are not taking the designated actions. Therefore, depending on the attitudes of the receivers, descriptive norms backfire on the desirable behavior. / 博士(心理学) / Doctor of Philosophy in Psychology / 同志社大学 / Doshisha University

Den här rapporten bygger på en studie inom Informationsdesign inriktning textdesign, och handlar om hur patos och logos kan användas i ett informationsmaterial för att påverka och uppmuntra till ett önskat beteende. Miljöfrågor är ständigt aktuella och år efter år syns en ökning av nedskräpning i naturen. Världsnaturfonden meddelade år 2017 att om nedskräpningen fortsätter öka i samma takt kan det finnas mer skräp, framför allt plast, än fisk i haven år 2050. Trots dyra kampanjer, stora evenemang och mycket information verkar inte trenden vända. En anledning till det kan vara att allmänheten vet om problemet men saknar motivation till att göra något för att förbättra miljön.  Studiens syfte är att med hjälp av principer inom informationsdesign, tillsammans med retorikens patos och logos, ta fram informationsmaterial som kan uppmuntra till minskad nedskräpning för att se vilka som upplevs vara mest effektiva. Med teorier inom retorik, stilistik, nudging samt grafisk form, text och bild i samverkan och med resultat från en enkätundersökning och en intervju, blev gestaltningen fyra olika informationsskyltar. Två av skyltarna fokuserar på logos och två fokuserar på patos. En utprovning gjordes också för att undersöka vilka två skyltar som verkar ha störst effekt på allmänhetens attityd och beteende. / This report is based on a study in Information Design focusing on text design, and is about how pathos and logos can be used in an information material to influence and encourage a desired behavior.  Environmental issues are constantly relevant and year after year there is an increase in litter in nature. The World Wide Fund for Nature announced in 2017 that if litter continues to increase at the same rate, there may be more litter, especially plastic, than fish in the oceans by year 2050. Despite expensive campaigns, major events and a lot of information, the trend does not seem to reverse. One reason for this may be that the public knows about the problem but lacks the motivation to do something to improve the environment. The purpose of the study is to use various principles in information design, combined with the pathos and logos of rhetoric, to produce information material that can encourage to reduce littering to see which ones are perceived to be most effective. With theories in rhetoric, stylistics, nudging and graphic form, text and image in collaboration and with results from a survey and an interview, the design became four different information signs. Two of the signs focus on logos and two focus on pathos. A test was also done to investigate which two signs seem to have the greatest effect on the public's attitude and behavior.

Tesis por compendio / [EN] Nowadays, online social networks (OSNs) have become a mainstream cultural phenomenon for millions of Internet users. Social networks are an ideal environment for generating all kinds of social benefits for users. Users share experiences, keep in touch with their family, friends and acquaintances, and earn economic benefits from the power of their influence (which is translated into new job opportunities). However, the use of social networks and the action of sharing information imply the loss of the users’ privacy. Recently, a great interest in protecting the privacy of users has emerged. This situation has been due to documented cases of regrets in users’ actions, company scandals produced by misuse of personal information, and the biases introduced by privacy mechanisms. Social network providers have included improvements in their systems to reduce users’ privacy risks; for example, restricting privacy policies by default, adding new privacy settings, and designing quick and easy shortcuts to configure user privacy settings. In the privacy researcher area, new advances are proposed to improve privacy mechanisms, most of them focused on automation, fine-grained systems, and the usage of features extracted from the user’s profile information and interactions to recommend the best privacy policy for the user. Despite these advances, many studies have shown that users’ concern for privacy does not match the decisions they ultimately make in social networks. This misalignment in the users’ behavior might be due to the complexity of the privacy concept itself. This drawback causes users to disregard privacy risks, or perceive them as temporarily distant. Another cause of users’ behavior misalignment might be due to the complexity of the privacy decision-making process. This is because users should consider all possible scenarios and the factors involved (e.g., the number of friends, the relationship type, the context of the information, etc.) to make an appropriate privacy decision. The main contributions of this thesis are the development of metrics to assess privacy risks, and the proposal of explainable privacy mechanisms (using the developed metrics) to assist and raise awareness among users during the privacy decision process. Based on the definition of the concept of privacy, the dimensions of information scope and information sensitivity have been considered in this thesis to assess privacy risks. For explainable privacy mechanisms, soft paternalism techniques and gamification elements that make use of the proposed metrics have been designed. These mechanisms have been integrated into the social network PESEDIA and evaluated in experiments with real users. PESEDIA is a social network developed in the framework of the Master’s thesis of the Ph.D. student [15], this thesis, and the national projects “Privacy in Social Educational Environments during Childhood and Adolescence” (TIN2014-55206- R) and “Intelligent Agents for Privacy Advice in Social Networks” (TIN2017-89156-R). The findings confirm the validity of the proposed metrics for computing the users’ scope and the sensitivity of social network publications. For the scope metric, the results also showed the possibility of estimating it through local and social centrality metrics for scenarios with limited information access. For the sensitivity metric, the results also remarked the users’ misalignment for some information types and the consensus for a majority of them. The usage of these metrics as part of messages about potential consequences of privacy policy choices and information sharing actions to users showed positive effects on users’ behavior regarding privacy. Furthermore, the findings of exploring the users’ trade-off between costs and benefits during disclosure actions of personal information showed significant relationships with the usual social circles (family members, friends, coworkers, and unknown users) and their properties. This allowed designing better privacy mechanisms that appropriately restrict access to information and reduce regrets. Finally, gamification elements applied to social networks and users’ privacy showed a positive effect on the users’ behavior towards privacy and safe practices in social networks. / [ES] En la actualidad, las redes sociales se han convertido en un fenómeno cultural dominante para millones de usuarios de Internet. Las redes sociales son un entorno ideal para la generación de todo tipo de beneficios sociales para los usuarios. Los usuarios comparten experiencias, mantienen el contacto con sus familiares, amigos y conocidos, y obtienen beneficios económicos gracias al poder de su influencia (lo que se traduce en nuevas oportunidades de trabajo). Sin embargo, el uso de las redes sociales y la acción de compartir información implica la perdida de la privacidad de los usuarios. Recientemente ha emergido un gran interés en proteger la privacidad de los usuarios. Esta situación se ha debido a los casos de arrepentimientos documentados en las acciones de los usuarios, escándalos empresariales producidos por usos indebidos de la información personal, y a los sesgos que introducen los mecanismos de privacidad. Los proveedores de redes sociales han incluido mejoras en sus sistemas para reducir los riesgos en privacidad de los usuarios; por ejemplo, restringiendo las políticas de privacidad por defecto, añadiendo nuevos elementos de configuración de la privacidad, y diseñando accesos fáciles y directos para configurar la privacidad de los usuarios. En el campo de la investigación de la privacidad, nuevos avances se proponen para mejorar los mecanismos de privacidad la mayoría centrados en la automatización, selección de grano fino, y uso de características extraídas de la información y sus interacciones para recomendar la mejor política de privacidad para el usuario. A pesar de estos avances, muchos estudios han demostrado que la preocupación de los usuarios por la privacidad no se corresponde con las decisiones que finalmente toman en las redes sociales. Este desajuste en el comportamiento de los usuarios podría deberse a la complejidad del propio concepto de privacidad. Este inconveniente hace que los usuarios ignoren los riesgos de privacidad, o los perciban como temporalmente distantes. Otra causa del desajuste en el comportamiento de los usuarios podría deberse a la complejidad del proceso de toma de decisiones sobre la privacidad. Esto se debe a que los usuarios deben considerar todos los escenarios posibles y los factores involucrados (por ejemplo, el número de amigos, el tipo de relación, el contexto de la información, etc.) para tomar una decisión apropiada sobre la privacidad. Las principales contribuciones de esta tesis son el desarrollo de métricas para evaluar los riesgos de privacidad, y la propuesta de mecanismos de privacidad explicables (haciendo uso de las métricas desarrolladas) para asistir y concienciar a los usuarios durante el proceso de decisión sobre la privacidad. Atendiendo a la definición del concepto de la privacidad, las dimensiones del alcance de la información y la sensibilidad de la información se han considerado en esta tesis para evaluar los riesgos de privacidad. En cuanto a los mecanismos de privacidad explicables, se han diseñado utilizando técnicas de paternalismo blando y elementos de gamificación que hacen uso de las métricas propuestas. Estos mecanismos se han integrado en la red social PESEDIA y evaluado en experimentos con usuarios reales. PESEDIA es una red social desarrollada en el marco de la tesina de Master del doctorando [15], esta tesis y los proyectos nacionales “Privacidad en Entornos Sociales Educativos durante la Infancia y la Adolescencia” (TIN2014-55206-R) y “Agentes inteligentes para asesorar en privacidad en redes sociales” (TIN2017-89156-R). Los resultados confirman la validez de las métricas propuestas para calcular el alcance de los usuarios y la sensibilidad de las publicaciones de las redes sociales. En cuanto a la métrica del alcance, los resultados también mostraron la posibilidad de estimarla mediante métricas de centralidad local y social para escenarios con acceso limitado a la información. En cuanto a la métrica de sensibilidad, los resultados también pusieron de manifiesto la falta de concordancia de los usuarios en el caso de algunos tipos de información y el consenso en el caso de la mayoría de ellos. El uso de estas métricas como parte de los mensajes sobre las posibles consecuencias de las opciones de política de privacidad y las acciones de intercambio de información a los usuarios mostró efectos positivos en el comportamiento de los usuarios con respecto a la privacidad. Además, los resultados de la exploración de la compensación de los usuarios entre los costos y los beneficios durante las acciones de divulgación de información personal mostraron relaciones significativas con los círculos sociales habituales (familiares, amigos, compañeros de trabajo y usuarios desconocidos) y sus propiedades. Esto permitió diseñar mejores mecanismos de privacidad que restringen adecuadamente el acceso a la información y reducen los arrepentimientos. Por último, los elementos de gamificación aplicados a las redes sociales y a la privacidad de los usuarios mostraron un efecto positivo en el comportamiento de los usuarios hacia la privacidad y las prácticas seguras en las redes sociales. / [CA] En l’actualitat, les xarxes socials s’han convertit en un fenomen cultural dominant per a milions d’usuaris d’Internet. Les xarxes socials són un entorn ideal per a la generació de tota mena de beneficis socials per als usuaris. Els usuaris comparteixen experiències, mantenen el contacte amb els seus familiars, amics i coneguts, i obtenen beneficis econòmics gràcies al poder de la seva influència (el que es tradueix en noves oportunitats de treball). No obstant això, l’ús de les xarxes socials i l’acció de compartir informació implica la perduda de la privacitat dels usuaris. Recentment ha emergit un gran interès per protegir la privacitat dels usuaris. Aquesta situació s’ha degut als casos de penediments documentats en les accions dels usuaris, escàndols empresarials produïts per usos indeguts de la informació personal, i als caires que introdueixen els mecanismes de privacitat. Els proveïdors de xarxes socials han inclòs millores en els seus sistemes per a reduir els riscos en privacitat dels usuaris; per exemple, restringint les polítiques de privacitat per defecte, afegint nous elements de configuració de la privacitat, i dissenyant accessos fàcils i directes per a configurar la privacitat dels usuaris. En el camp de la recerca de la privacitat, nous avanços es proposen per a millorar els mecanismes de privacitat la majoria centrats en l’automatització, selecció de gra fi, i ús de característiques extretes de la informació i les seues interaccions per a recomanar la millor política de privacitat per a l’usuari. Malgrat aquests avanços, molts estudis han demostrat que la preocupació dels usuaris per la privacitat no es correspon amb les decisions que finalment prenen en les xarxes socials. Aquesta desalineació en el comportament dels usuaris podria deure’s a la complexitat del propi concepte de privacitat. Aquest inconvenient fa que els usuaris ignorin els riscos de privacitat, o els percebin com temporalment distants. Una altra causa de la desalineació en el comportament dels usuaris podria deure’s a la complexitat del procés de presa de decisions sobre la privacitat. Això es deu al fet que els usuaris han de considerar tots els escenaris possibles i els factors involucrats (per exemple, el nombre d’amics, el tipus de relació, el context de la informació, etc.) per a prendre una decisió apropiada sobre la privacitat. Les principals contribucions d’aquesta tesi són el desenvolupament de mètriques per a avaluar els riscos de privacitat, i la proposta de mecanismes de privacitat explicables (fent ús de les mètriques desenvolupades) per a assistir i conscienciar als usuaris durant el procés de decisió sobre la privacitat. Atesa la definició del concepte de la privacitat, les dimensions de l’abast de la informació i la sensibilitat de la informació s’han considerat en aquesta tesi per a avaluar els riscos de privacitat. Respecte als mecanismes de privacitat explicables, aquests s’han dissenyat utilitzant tècniques de paternalisme bla i elements de gamificació que fan ús de les mètriques propostes. Aquests mecanismes s’han integrat en la xarxa social PESEDIA i avaluat en experiments amb usuaris reals. PESEDIA és una xarxa social desenvolupada en el marc de la tesina de Màster del doctorant [15], aquesta tesi i els projectes nacionals “Privacitat en Entorns Socials Educatius durant la Infància i l’Adolescència” (TIN2014-55206-R) i “Agents Intel·ligents per a assessorar en Privacitat en xarxes socials” (TIN2017-89156-R). Els resultats confirmen la validesa de les mètriques propostes per a calcular l’abast de les accions dels usuaris i la sensibilitat de les publicacions de les xarxes socials. Respecte a la mètrica de l’abast, els resultats també van mostrar la possibilitat d’estimarla mitjançant mètriques de centralitat local i social per a escenaris amb accés limitat a la informació. Respecte a la mètrica de sensibilitat, els resultats també van posar de manifest la falta de concordança dels usuaris en el cas d’alguns tipus d’informació i el consens en el cas de la majoria d’ells. L’ús d’aquestes mètriques com a part dels missatges sobre les possibles conseqüències de les opcions de política de privacitat i les accions d’intercanvi d’informació als usuaris va mostrar efectes positius en el comportament dels usuaris respecte a la privacitat. A més, els resultats de l’exploració de la compensació dels usuaris entre els costos i els beneficis durant les accions de divulgació d’informació personal van mostrar relacions significatives amb els cercles socials habituals (familiars, amics, companys de treball i usuaris desconeguts) i les seves propietats. Això ha permés dissenyar millors mecanismes de privacitat que restringeixen adequadament l’accés a la informació i redueixen els penediments. Finalment, els elements de gamificació aplicats a les xarxes socials i a la privacitat dels usuaris van mostrar un efecte positiu en el comportament dels usuaris cap a la privacitat i les pràctiques segures en les xarxes socials. / Alemany Bordera, J. (2020). Measures of Privacy Protection on Social Environments [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/151456 / Compendio

Solid state lithium ion electrolytes are important to the development of next generation safer and high power density lithium ion batteries. Perovskite-structured LLT is a promising solid electrolyte with high lithium ion conductivity. LLT also serves as a good model system to understand lithium ion diffusion behaviors in solids. In this thesis, molecular dynamics and related atomistic computer simulations were used to study the diffusion behavior and diffusion mechanism in bulk crystal and grain boundary in lithium lanthanum titanate (LLT) solid state electrolytes. The effects of defect concentration on the structure and lithium ion diffusion behaviors in LLT were systematically studied and the lithium ion self-diffusion and diffusion energy barrier were investigated by both dynamic simulations and static calculations using the nudged elastic band (NEB) method. The simulation results show that there exist an optimal vacancy concentration at around x=0.067 at which lithium ions have the highest diffusion coefficient and the lowest diffusion energy barrier. The lowest energy barrier from dynamics simulations was found to be around 0.22 eV, which compared favorably with 0.19 eV from static NEB calculations. It was also found that lithium ions diffuse through bottleneck structures made of oxygen ions, which expand in dimension by 8-10% when lithium ions pass through. By designing perovskite structures with large bottleneck sizes can lead to materials with higher lithium ion conductivities. The structure and diffusion behavior of lithium silicate glasses and their interfaces, due to their importance as a grain boundary phase, with LLT crystals were also investigated by using molecular dynamics simulations. The short and medium range structures of the lithium silicate glasses were characterized and the ceramic/glass interface models were obtained using MD simulations. Lithium ion diffusion behaviors in the glass and across the glass/ceramic interfaces were investigated. It was found that there existed a minor segregation of lithium ions at the glass/crystal interface. Lithium ion diffusion energy barrier at the interface was found to be dominated by the glass phase.

The awareness of environmental impacts lead to that organizations are starting to work towards UN's global sustainability goals. To influence customers into a more sustainable behaviour, organizations have the potential to look at nudging as a tool. A nudge is a way to alter peoples behaviour into taking a certain decision. However, since many organizations offer their service or product in the digital environment, such as websites or apps, increased knowledge of digital nudging is required. This thesis aims to establish a framework for how nudges should be designed and used on digital platforms to encourage sustainable decisions. The purpose is to enlighten designers of digital environment of the potential of nudges, pitfalls to avoid, and a general design process to follow. The framework is based on a literature study and interviews with people familiar with the concept of nudging. To examine how the framework works a case study is performed, this includes a workshop, performing a user research, developing prototypes and finally, conduct user tests. By testing the framework further methods could be found, this meant that more practical steps could be included in the framework. The result of this thesis shows that the framework proved to be useful and functional to use when designing digital nudges to encourage sustainable decisions.

Between 4000-10 000 ads each day every day. That is how many ads we as customers are exposed to individually, each and every day. To reach a higher efficiency in marketing, marketing managers and store owners nowadays aiming to increase the customer satisfaction by striving to understand the customer behavior and their decisioning-making. For the aim of this thesis, we investigated if coloring cues in the retail environment had an impact on customers’ behavior in a specific retail store environment. This experiment was taken place in a small town within Sweden, named Karlstad. The retail store belongs to the electronic sector and the participants included in the experiment were randomly visiting customers of this electronical retail store. In the experiment we used IoT devices from Texas Instruments, a sensor device, called CC2650, enabled us to collect data from interactions by customers and products. In our experiment we compared three periods of data with the help from the analysis method of one-way ANOVA. The result was showing that there is a significant variance between at least two of our three periods of measurements, and by the results of this thesis we could reject the Null Hypothesis (H0). As the H0, were telling that there would not be any differences between any of the three measured periods of time. Further, with insights from our one-way ANOVA, we could determine with help from a complementary analysis method, the Tukey’s HSD, we could point out which periods that were significant different from one another. This made us come into conclusions that there is a possibility to predict the customer behavior and the customer’s Need for Touch (NFT), a part of the nudging theory, and can give the marketing managers and store owners in retail an increase of understanding of the customer’s behavior. Future research could look into how customer’s behavior can change within different type of retail stores, and also if coloring cues in retail stores within bigger cities will have another impact on customer’s behavior.

The master's thesis is focused on the use of behavioural insights in public policy making. It presents possibilities and limitations that this approach brings in general and in the case study of shared medication record, describes the legislative framework and explores the ethical issues perceived by relevant stakeholders. The shared medication record is based on the principle of presumed consent of access doctors and pharmacists to the database of prescribed and dispensed medicines of the patient. He or she may thus make no effort to allow consent. If the patient does not agree with their access, he or she has the option of so-called opt-out, the granting of a prohibition of access. This type of public policy measure, i.e., nudge, is based on the libertarian paternalism. The paternalistic aspect in the shared medication record is represented by the protection of all citizens from possible unwanted medication interactions, the libertarian aspect is the possibility of opt-out.

Climate change poses the most significant threat to sustainable tourism in the 21st century, impacting destinations globally with abnormal weather phenomena. Climate change not only affects the environment but also our mental health. Extreme weather events linked to climate change increase the risk of anxiety, depressive disorders, and other mental health issues, particularly among young people such as Gen-Z. Nevertheless, climate change anxiety has shown potential to motivate eco-friendly actions, including travel choices. The current research gap exists concerning how climate change anxiety influences travel decision-making. Understanding this relationship is crucial for comprehending the psychological factors driving environmentally responsible decisions. In the present study, the protection motivation theory offers the theoretical lenses for understanding responses to fear stimuli and the motivation for protective actions. This study utilized a nonequivalent quasi-experimental design with focus groups to investigate the impact of climate change anxiety on travel choices among Gen-Z university students. Two groups, a treatment group and a comparison group, were exposed to different climate change videos designed to evoke higher or lower levels of anxiety. While the video shown to the treatment group successfully heightened climate change anxiety, the study found that increased anxiety did not necessarily result in sustainable travel choices. Instead, it often led to feelings of apathy and desensitization. The research identified lack of self-efficacy, cost and time as the main barriers for university students to consider more environmentally travels. It highlights the need for better climate change communication to inspire positive action, emphasizing a vision of a better future. The study’s results offer a baseline for future research aimed at understanding effective climate change communication strategies that prompt pro- environmental actions. Interventions aimed at reshaping travel decision-making, which take into account climate change anxiety and evolutionary biases influencing travel choices, can offer valuable insights for public campaigns promoting sustainable consumption among Gen Z. By nudging tourists and making sustainability the default choice, these interventions could effectively encourage more eco-friendly travel decisions.

L’évolution des notions juridiques de vie privée et de données personnelles. A l’inverse de la littérature foisonnante sur le thème de la surveillance, il ne s’agit pas ici de mettre en avant la nécessité de trouver un équilibre entre la surveillance entendue dans sa dimension sécuritaire et la protection de la vie privée et des données personnelles, en ce qu’elle constitue une liberté fondamentale reconnue par les institutions françaises et européennes. Cette recherche d’une balance équilibrée entre sécurité et liberté doit nécessairement être dépassée pour comprendre le phénomène de surveillance diffuse. La surveillance n’est plus la simple activité de recherche de renseignements concernant un individu potentiellement dangereux. Elle s’inscrit plutôt dans la poursuite de ceque Hannah Arendt qualifie de « crise de la culture ». La surveillance diffuse est même l’une des caractéristiques de la culture contemporaine dominée par la peur, la consommation et l’aliénation par les technologies. Devenue la nouvelle norme sociale admise, la surveillance diffuse désinstitue le droit des données personnelles et la protection de la vie privée. Progressivement, elle désinstitue également le Droit au profit du libéralisme économique qu’elle porte en son sein. / The purpose of this research is to understand how diffuse surveillance fits into the evolution of legal concepts of privacy and personal data. Contrary to the abundant literature on the subject of surveillance, it is not a questionhere of highlighting the need to find a balance between surveillance in its security dimension and the protection of privacy and data, as a fundamental freedom recognized by French and European institutions. This search for a balance between security and freedom must necessarily be overcome to understand the phenomenon of diffuse surveillance. Surveillance is no longer just a search for information about a potentially dangerous individual. Rather, it is a continuation of what Hannah Arendt calls the « crisis of culture ». Diffuse surveillance is even oneof the features of contemporary culture dominated by fear, consumption and alienation by technology. Having become the new accepted social norm, the diffuse surveillance deinstitutes the right of the personal data and the protection of the private life. Gradually, it also deinstitutes the Law to profit from the economic liberalism that it carries within it.