Interaction and imitation in a world of Quixotes and Sanchos

Producción CientíficaThis paper studies a two-population evolutionary game in a new setting in between a symmetric and an asymmetric evolutionary model. It distinguishes two types of agents: Sanchos, whose payoffs are defined by a prisoner’s dilemma game, and Quixotes, whose payoffs are defined by a snowdrift game. Considering an imitative revision protocol, a revising agent is paired with someone from his own population or the other population. When matched, they observe payoffs, but not identities. Thus, agents in one population interact and imitate agents from their own population and from the other population. In this setting we prove that a unique mixed-strategy asymptotically stable fixed point of the evolutionary dynamics exists. Taking as an example the compliance with social norms, and depending on the parameters, two type of equilibrium are possible, one with full compliance among Quixotes and partial compliance among Sanchos, or another with partial compliance among Quixotes and defection among Sanchos. In the former type, Sanchos comply above their Nash equilibrium (as they imitate compliant Quixotes). In the latter type, Quixotes comply below their Nash equilibrium (as they imitate defecting Sanchos)

Polymorphic phase boundary in piezoelectric oxides

The design of phase boundaries has now become a consolidated strategy to improve the functional properties of piezoelectric oxides because of the unique properties that may be obtained in their vicinity. In particular, polymorphic phase boundaries (PPBs) have attracted significant interest in recent years because they represent a significant breakthrough in terms of enhanced piezoelectric activity of lead-free piezoelectric oxides. PPBs are temperature-driven phase transitions where both intrinsic and extrinsic contributions maximize, thereby enhancing the macroscopic properties of piezoelectric materials. This tutorial discusses potassium–sodium–niobate-based systems as model materials to reveal some of the most relevant advances in the design of PPBs through compositional modifications. We focus on how PPBs can be modulated by engineered doping and also discuss the direct relation between PPBs and the enhancement of piezoelectric activity. Finally, we briefly describe the main experimental techniques for detecting PPBs.Postprint (author's final draft

An Extension of NDT to Model Entity Reconciliation Problems

Within the development of software systems, the development of web applications may be one of the most widespread at present due to the great number of advantages they provide such as: multiplatform, speed of access or the not requiring extremely powerful hardware among others. The fact that so many web applications are being developed, makes grotesque the volume of information that it is generated daily. In the management of all this information, it appears the entity reconciliation problem, which is to identify objects referring to the same real-world entity. This paper proposes to give a solution to this problem through a web perspective. To this end, the NDT methodology has been taken as a reference and has been extended adding new activities, artefacts and documents to cover this problem.Ministerio de Economía y Competitividad TIN2013-46928-C3-3-RMinisterio de Economía y Competitividad TIN2016-76956-C3-2-RMinisterio de Economía y Competitividad TIN2015-71938-RED

Gender stereotypes about steam careers in education

Treball Final de Grau en Psicologia. Codi: PS1048. Curs: 2018/2019.The number of girls choosing careers related to science, technology, engineering, arts and mathematics (STEAM) is still very low. One of the explanations focuses on the differentiated choice of professions according to gender due to the importance of the congruence search between the roles that society demands to each sex. The aim of this study is to examine if the gender stereotypes related to STEAM careers continue being reproduced by students and teachers. To this end, we carried out a qualitative study at the IES Ribalta in Castellón de la Plana with 12 female students (50% female) from 14 to 16 years old, and with 6 teachers (50% male). With the students, we hold a group workshop, showing an enigma about the sex of a person introduced as a medical eminence. With the teachers, we conducted semi-structured interviews in which they have been asked if they think if there are innate capacities in the function of gender in the people who are dedicated to STEAM careers. 50% of the students did not solve the enigma, because: masculinization /feminization of the professions (medical eminence, men; nurse, woman), the invisibility of women scientists in textbooks and the media, visualization of STEAM women achievements such as something "unusual". Teachers' responses were in three lines: Yes, there are innate differences in the function of gender and female gender is the most favored; no, there are no innate differences in the function of gender, and; Yes, there are differences and its benefits the male gender. In conclusion, these results confirm the variety of stereotyped beliefs in the educational settings, which are consistent with the low percentages of women in the STEAM careers currently. They also show the evident intention to dismantle them by the participants.El número de chicas que eligen carreras vinculadas a ciencias, tecnologías, ingenierías, artes y matemáticas (STEAM) sigue siendo muy bajo. Una de las explicaciones se centra en la elección diferenciada de profesiones en función del género debido a la importancia que tiene la búsqueda de congruencia entre los roles que la sociedad demanda a cada sexo. El objetivo del presente estudio es examinar si los estereotipos de género relacionados con las carreras STEAM se siguen reproduciendo en alumnado y profesorado. Para ello se ha llevado a cabo un estudio cualitativo en el IES Ribalta de Castellón de la Plana con 12 alumnas/os (50% mujeres) de 14 a 16 años, y con 6 profesores/as (50% hombres). Con el alumnado, se realizó un taller grupal donde debían resolver un acertijo sobre el género de una persona presentada como eminencia médica. Con el profesorado, se realizaron entrevistas semi-estructuradas en las cuales se preguntó si existían capacidades innatas en función del sexo en las personas que se dedican a carreras STEAM. El 50% del alumnado no resolvió el enigma por: masculinización/feminización de profesiones (eminencia médica hombre, enfermera mujer), invisibilidad de las mujeres científicas en libros de texto y medios de comunicación, visibilización de logros de mujeres STEAM como algo “inusual”. Los resultados del profesorado fueron en tres líneas distintas: Si que existen diferencias innatas en las personas de carreras STEAM siendo el género femenino más favorecido; no existen diferencias innatas en función del género y, si existen, benefician al género masculino. En conclusión, mediante estos resultados se confirma la variedad de creencias estereotipadas en el ámbito educativo, son consistentes con los bajos porcentajes de mujeres en carreras STEAM en la actualidad. También se pone de manifiesto por parte de las/los participantes la intención de desmantelarlas

Stretchable electronics for artificial skin

Postprint (published version

Detecting Functional Requirements Inconsistencies within Multi-teams Projects Framed into a Model-based Web Methodology

One of the most essential processes within the software project life cycle is the REP (Requirements Engineering Process) because it allows specifying the software product requirements. This specification should be as consistent as possible because it allows estimating in a suitable manner the effort required to obtain the final product. REP is complex in itself, but this complexity is greatly increased in big, distributed and heterogeneous projects with multiple analyst teams and high integration between functional modules. This paper presents an approach for the systematic conciliation of functional requirements in big projects dealing with a web model-based approach and how this approach may be implemented in the context of the NDT (Navigational Development Techniques): a web methodology. This paper also describes the empirical evaluation in the CALIPSOneo project by analyzing the improvements obtained with our approach.Ministerio de Economía y Competitividad TIN2013-46928-C3-3-RMinisterio de Economía y Competitividad TIN2015-71938-RED

A random version of Simons' inequality

The purpose of this paper is to provide a random version of Simons' inequality