Dynamic Renormalization Group Approach to Self-Organized Critical Phenomena

Two different models exhibiting self-organized criticality are analyzed by means of the dynamic renormalization group. Although the two models differ by their behavior under a parity transformation of the order parameter, it is shown that they both belong to the same universality class, in agreement with computer simulations. The asymptotic values of the critical exponents are estimated up to one loop order from a systematic expansion of a nonlinear equation in the number of coupling constants.Comment: 8 pages, RevTeX 3.0, 1 PostScript figure available upon reques

The irony of choice in recruitment: when similarity turns recruiters to other candidates

Across two experimental studies, we examine the influence of similarity perceptions on recruiters’ job fit perceptions of job applicants. In addition, a robustness study extends the effect of similarity by introducing work-related sources of similarity and tests the relationship between workrelated similarities on similarity perceptions. Moreover, we explore the emotional and cognitive mechanisms behind the effects of similarity perceptions on job fit. We also propose and test a boundary condition, such that, when job desirability is low, the effect of demographic similarity on perceived similarity is reversed. The sample for the three studies consist of specialized master’s students with work experience in human resources management who acted as recruiters in a resume screening situation. The results show that the effects of similarity are not always positive for job fit perceptions. The studies provide evidence that when recruiters perceive applicants as similar to themselves, biased evaluations occur. Finally, we provide results that show the effects of mediation and moderation analysis whereby liking mediates the relationship between similarity perceptions and job fit perceptions through emotional, cognitive and motivational sequential mediators. Additionally, job desirability moderates the relationship between demographic similarity and similarity perceptions so that when job desirability is low, the effect of demographic similarity on perceived similarity is reversed

El impacto de la formación en línea en la transferencia de comportamiento y en el desempeño laboral en una gran organización

Este estudio analiza la efectividad de la formación en línea en una gran organización. Se ha probado la influencia de diferentes procesos de la formación, como las estrategias de aprendizaje, las reacciones, el apoyo a la transferencia y las barreras, en la transferencia del comportamiento y el desempeño laboral. Los participantes fueron 3,600 empleados de un banco público brasileño que participaron en una formación en línea en el trabajo. Seis meses después, sus supervisores evaluaron las influencias de la formación en el comportamiento laboral de sus subordinados. Los hallazgos indicaron que en la autoevaluación la transferencia del comportamiento se predijo mediante estrategias de aprendizaje de elaboración/aplicación práctica, reacciones a la formación, apoyo organizacional y de pares; las estrategias de control de la motivación, cognitivas/búsqueda de ayuda y elaboración/aplicación práctica, junto con las reacciones a la formación, se relacionaron significativamente con el desempeño laboral. En la heteroevaluación, el apoyo del supervisor contribuyó a explicar la transferencia del comportamiento y las estrategias cognitivas/búsqueda de ayuda explicaron el desempeño laboral. Se identificó el papel mediador de las reacciones a la formación y el apoyo a la transferencia mostró efectos moderadores marginales.This study analyzes the effectiveness of online training in a large organization. We tested the influence of different training processes, such as learning strategies, reactions, support of transfer, and barriers, on behavioral transfer and job performance. The participants were 3,600 employees of a Brazilian public bank after taking part in online training at work. Six months later, their supervisors evaluated the influences of the training on their subordinates’ work behaviors. Findings indicated that in self-evaluation behavioral transfer was predicted by elaboration/practical application learning strategies, trainees’ reactions to training, organizational, and peer support; motivation control, cognitive/help-seeking, and elaboration/practical application learning strategies, along with trainees’ reactions to training, were significantly related to job performance. In hetero-evaluation, supervisor support contributed to explaining behavioral transfer, and cognitive/help-seeking strategies explained job performance. The mediating role of reactions to training was identified, and support of transfer showed marginal moderating effects.Ministerio de Economía y Competitividad PSI2015-64894-

Learning strategies scale: adaptation to Portuguese and factor structure

Since learning strategies seem to be an important set of variables to explain the effectiveness of training and e-learning in organizations is here to stay, this paper aimed to analyze the factor structure and psychometric properties of a Learning Strategies Scale (LSS) and its relationship with the training transfer in an e-learning corporate context. A total of 3600 employees of a Brazilian bank participated in this study by responding to the LSS after taking part in an online course. We measured training transfer with self-evaluation and hetero-evaluation scales. Internal consistency, confirmatory factor analysis, and multiple regressions were conducted. A four-factor structure and an acceptable level of fit for the model were found. All types of learning strategies were related to training transfer in self-evaluation, and the cognitive and help-seeking strategies contributed to explain training transfer in hetero-evaluation. As a reliable and valid measure that predicts the effectiveness of training and job performance, participants should be advised about the learning strategies that produce better performance results at the workplace. Future research should use it in different contexts and samples, analyzing its relationships with other workplace variables.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior” (CAPES/Brazil

WACline: A Software Product Line to harness heterogeneity in Web Annotation

[EN] A significant amount of research project funding is spent creating customized annotation systems, reinventing the wheel once and again, developing the same common features. In this paper, we present WACline, a Software Product Line to facilitate customization of browser extension Web annotation clients. WACline reduces the development effort by reusing common features (e.g., highlighting and commenting) while putting the main focus on customization. To this end, WACline provides already implemented 111 features that can be extended with new ones. In this way, researchers can reduce the development and maintenance costs of annotation clients.Open Access funding was provided thanks to the CRUE-CSIC agreement with Elsevier. This work was supported by the Spanish Ministry of Science, Innovation and Universities under contract RTI2018-099818-B-I00 and TIN2017-90644-REDT. Onekin Group enjoys support from the program Grupos de Investigación del Sistema Univesitario Vasco 2019–2021 under contract IT1235-19. Haritz Medina and Xabier Garmendia enjoy a grant from the University of the Basque Country - PIF17/15 and PIF20/236 respectively

Erratum: Noise-induced transition in human reaction times

We thank Kenneth H Norwich (University of Toronto, Canada) for his help and support in the derivation of equations (10) and (11).The human reaction/response time can be defined as the time elapsed from the onset of stimulus presentation until a response occurs in many sensory and cognitive processes. A reaction time model based on Piéron’s law is investigated. The model shows a noise-induced transition in the moments of reaction time distributions due to the presence of strong additive noise. The model also demonstrates that reaction times do not follow fluctuation scaling between the mean and the variance but follow a generalized version between the skewness and the kurtosis. The results indicate that noise-induced transitions in the moments govern fluctuations in sensory–motor transformations and open an insight into the macroscopic effects of noise in human perception and action. The conditions that lead to extreme reaction times are discussed based on the transfer of information in neurons

Classification of peacock feather reflectance using principal component analysis similarity factors from multispectral imaging data

This is the author accepted manuscript. The final version is available from the publisher via the DOI in this record.Iridescent structural colors in biology exhibit sophisticated spatially-varying reflectance properties that depend on both the illumination and viewing angles. The classification of such spectral and spatial information in iridescent structurally colored surfaces is important to elucidate the functional role of irregularity and to improve understanding of color pattern formation at different length scales. In this study, we propose a non-invasive method for the spectral classification of spatial reflectance patterns at the micron scale based on the multispectral imaging technique and the principal component analysis similarity factor (PCASF). We demonstrate the effectiveness of this approach and its component methods by detailing its use in the study of the angle-dependent reflectance properties of Pavo cristatus (the common peacock) feathers, a species of peafowl very well known to exhibit bright and saturated iridescent colors. We show that multispectral reflectance imaging and PCASF approaches can be used as effective tools for spectral recognition of iridescent patterns in the visible spectrum and provide meaningful information for spectral classification of the irregularity of the microstructure in iridescent plumage.This research was developed during a visiting research stay of Dr. José M. Medina in the Departamento de Óptica, Universidad de Granada, Spain. We thank to José Medina and Rosalía Ruiz who provided the peacock samples, to David Porcel and Juan de Dios Bueno from the Servicio de Microscopía, (Centro de Instrumentación Científica, Universidad de Granada) for technical assessment, and to the Color Imaging Group (Universidad de Granada) for their hardware partial support. JMM and JAD acknowledge the Departmento de Óptica, Universidad de Granada, Spain. PV acknowledges USAF funding (FA9550-10-1-0020)

Jerarquía funcional y urbana entre las zonas metropolitanas de la región Centro Occidente de México en el contexto de la globalización

Peer Reviewe

An Evaluation of an Intervention Programme in Teacher Training for Geography and History: A Reliability and Validity Analysis

We evaluated a teacher training intervention programme aimed at improving the teaching and learning process relating to history in the secondary classroom. This was carried out via the implementation of several teaching units during the period of teaching practice of trainee teachers specialising in geography and history. The design of the teaching units was based on historical thinking competencies and on the introduction of active learning strategies. The programme was evaluated via a quasi-experimental A-B type methodological approach employing a pretest and a post-test. Both tools were designed on the basis of four dimensions (methodology, motivation, satisfaction and perception). The content of the tools was validated using the interjudge process via a discussion group in the first round and with a Likert scale questionnaire (1–4) with seven experts in the second round. The reliability of the tools has been estimated via three indices (Cronbach’s alpha, composite reliability and omega), and the validity of the construct via an exploratory (EFA) and confirmatory factor analysis (CFA) with the structural equation model. The results regarding reliability and validity have been adequate. Furthermore, the descriptive results show an improvement in all of the dimensions following the implementation of the teaching units, particularly with regard to group work, the use of digital resources and work with primary sources.This article has been possible thanks to the research project “Methodological concepts and active learning methods for the improvement of teaching competencies” (PGC2018-094491-B-C33), funded by Ministry of Science, University and Innovation, co-funded by FEDER, and project “Teacher competencies and active learning methods. An evaluative research with trainee teachers of social sciences” (20638/JLI/18), funded by Seneca Foundation. Agency of Science and Technology from Region of Murcia