Search results for "attribut"
showing 10 items of 355 documents
Pensar el riesgo. En diálogo con Luhmann
2010
RESUMEN La sociología del riesgo es una de las derivaciones más importantes de la teoría de sistemas de Luhmann. Riesgo no es una realidad sino un esquema de observación característico de nuestro tiempo. El concepto de riesgo es siempre parte de una dicotomía y Luhmann analiza dos posibilidades: riesgo-seguridad, riesgo-peligro. Esta última distinción es la que permite una gestión del riesgo capaz de asignar responsabilidades mediante el manejo de la noción de imputación. Hay una tendencia muy significativa a transformar peligros en riesgos. Los sistemas generan y trabajan con riesgos, que distribuyen y transforman. Aquí se analizan algunos de los riesgos del sistema jurídico. Los riesgos …
3D Object Modeling by Sharing Visual Attributes across Poses and Scales
2014
Scene parsing aims at understanding a scene and the arrangements of the objects in it. While this is a task human beings are pretty good at [7], a machine needs to: recognize the kind of scene (indoor vs outdoor, bedroom vs. living room etc.)[4], detect and recognize 3D objects across multiple poses and scales [8, 5], infer the geometrical arrangement of the objects in the scene [2, 1], etc.. In the proposed framework, a 3D object is modeled as a graph. Each node in the graph represents a visual attribute automatically discovered by considering features that are consistently and repeatedly present across different poses and scales. Such visual attributes are different from “parts” [5], whic…
An Efficient Traceable Attribute-Based Authentication Scheme with One-Time Attribute Trees
2015
Attribute-based authentication (ABA) is a way to authenticate signers by means of attributes and it requests proof of possessing required attributes from the one to be authenticated. To achieve the property of traceability, required attributes should be combined with the signer’s attribute private keys in order to generate a signature. In some schemes, signers’ attribute keys are related to attribute trees, so changing attribute trees will cause the regeneration of all related attribute keys. In this paper, we propose an efficient traceable ABA scheme, where the generation of signers’ attribute keys is independent from attribute trees. Thus the same set of attribute keys can be used with a …
Blockchain Based Delegatable Access Control Scheme for a Collaborative E-Health Environment
2018
Modern electronic healthcare (e-health) settings constitute collaborative environments requiring sophisticated fine-grained access control mechanisms to cater their access demands. Access delegatability is quite crucial to realize fine-grained, flexible access control schemes compatible with such environments. In this paper, we addressed this issue through proposing an attribute based access control scheme integrated with controlled access delegation capabilities suitable for a multi-domain e-health environment. We have utilized the blockchain technology to manage attribute assignments, delegations as well as revocations. The scheme enables delegations in a controlled manner without jeopard…
School teachers bullied by their students: Teachers´ attributions and how they share their experiences
2012
Abstract Previous studies suggest that many teachers worldwide are bullied by students. However, deeper understanding of teachers' bullying experiences; of their interpretations of the causes of bullying; and of how they cope with these experiences, is lacking. Using an Internet survey we examined the attributions made by Finnish elementary and lower secondary school teachers for their victimisation; the people with whom they share their experiences; and the links between these. Three kinds of attribution were identified: student-related, institution-related, and teacher-related. Selection of the persons with whom teachers shared their experiences was determined by the nature of the attribu…
Predicting Mathematics Achievement in Secondary Education: The Role of Cognitive, Motivational, and Emotional Variables.
2020
Academic achievement in general, and in mathematics in particular, is positively associated not only with cognitive abilities, but also with emotional and motivational skills. The objective of this study was to analyze the prediction strength of cognitive, motivational, and emotional variables in mathematics achievement throughout high school, considering students' gender and age. A large sample of 2,365 Spanish students from the 4 years of high school (12-16 years old) participated in the study. Students provided information about their intellectual skills, perceived competence in mathematics, perceived utility of mathematics, intrinsic interest in learning, mathematics anxiety, and their …
The Stigma of Being Overweight
2013
In a job context, we investigated whether controllability of a stigma influences the self-protective effects of attributions to discrimination. Eighty overweight females read a vignette and imagined being rejected for a job because of their (1) personal abilities, (2) sex, (3) being overweight due to a disease, or (4) being overweight from personal causes. Results showed that when the rejection was gender-based, participants blamed themselves less and had higher performance self-esteem than when it was due to personal abilities. Importantly, when being overweight had a personal background – and was hence controllable – women blamed themselves more for the rejection and reported lower perfo…
Testosterone and attribution of successful competition
2000
Mood, personal merit, and/or its perception have been suggested to be mediating factors in testosterone responses to competition. Previously we have found that personal contribution and attribution were related to testosterone levels after successful competition. To confirm such associations, two basketball teams (n = 17 players) that emerged as winners in two actual matches were studied. Salivary testosterone levels and mood were measured before and after the games. Individual contribution to the outcome was assessed, and personal satisfaction and causal attribution of outcome were reported by players. Testosterone concentrations increased to near significance in Team 1 but not in Team 2, …
A weighted logistic regression for conjoint analysis and Kansei engineering
2007
Customer needs for emotional satisfaction are increasingly being considered by product and service designers. While several existing methods such as conjoint analysis (CA), Kano model and quality function deployment support the translation of customer requirements into technical specifications, researchers are now working to develop methods aimed at integrating affective aspects into product design. Kansei engineering (KE) is a design philosophy that considers customer perceptions and emotions by adopting a multi-disciplinary approach. CA is a useful tool within a KE project. This article presents a methodology for conducting a KE project in early development phases. This methodology is bas…
Insights into online reviews of hotel service attributes: A cross-national study of selected countries in Africa
2018
Online travel reviews are paramount to trip planning because they help consumers’ form images of destinations. Despite ample studies on hotel service attributes, knowledge is scarce regarding culturally nuanced attributes, including security perceptions. This study examines consumers’ perceptions of service attributes and security/safety concerns of hotels in Africa. Data were extracted from three hotel categories (3, 4, and 5-stars), which were based on TripAdvisor rankings from Egypt, Ghana, Kenya, Nigeria, and South Africa. A hybrid analysis revealed that hotel service attributes and security/safety are cardinal evaluation criteria for visitors to Africa. Additionally, our study reveals …