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showing 10 items of 2747 documents
An Efficient Multi-Show Unlinkable Attribute Based Credential Scheme for a Collaborative E-Health Environment
2017
Modern electronic healthcare (e-health) systems constitute collaborative environments in which patients' private health data are shared across multiple domains. In such environments, patients' privacy can be violated through the linkability of different user access sessions over patient health data. Therefore, enforcing anonymous as well as multi-session unlinkable access for the users in e-health systems is of paramount importance. As a way of achieving this requirement, more emphasis has been given to anonymous attribute credentials, which allows a user to anonymously prove the ownership of a set of attributes to a verifier and thereby gain access to protected resources. Among the existin…
Elliptic Curve-Based Secure Multidimensional Aggregation for Smart Grid Communications
2017
In smart grid, data aggregation is considered as an essential paradigm in assessing information about current energy usage. To achieve the privacy-preserving goal, several homomorphic-based solutions have been proposed. However, these solutions either consider one-dimensional information or use costly pairing computation in order to ensure source authentication. In fact, smart grid data are likely to be multidimensional (e.g., time, purpose, and so on) for more accurate control. In addition, the aggregation node in smart grid needs to verify data that come from several smart meters in a residential area; hence, the verification must be cost-efficient. In this paper, we propose a scheme that…
El trabajo en red y la cooperación como elementos para la mejora escolar
2021
La escuela es un entorno enriquecido de aprendizaje, pero no es el único entorno educativo. La misión educativa de la escuela debe contemplar la coordinación escuela-familia como rasgo de su proyecto social. Buena parte de este puente se fundamenta en el diálogo desde la participación de la familia con el desarrollo educativo integral, base de la noción democratizadora de la escuela. Por ello, esta aportación aborda el trabajo en red como elemento para la mejora escolar desde la cooperación. Se focaliza en el trabajo en red al servicio del aprendizaje y el conocimiento y en los equipos cooperativos como unidad de trabajo en red. Una muestra de esta forma de trabajo se concreta en dos experi…
Ready to Go? Schools’ Preparedness for Teaching and Learning Within a One-to-One Program
2020
Part 6: ICT and Education; International audience; During the years there has been an increasing number of one-to-one programs around the world. In such programs all students are equipped with portable devices, such as laptops, tablets, smartphones for learning purposes. Even if these initiatives are increasing, our knowledge of the impact of such digital transformation of education is still little studied. Based on data from a three years longitudinal study on a large-scale implementation of Chromebooks in a municipality, this paper highlights teachers’ experiences. Key findings suggest that this initiative has been successful when it comes to the administrative and technical implementatio…
Twenty years of the International Society for Pediatric and Adolescent Diabetes Science Schools programs: Assessment of their impact on the participa…
2022
Objective: The following report describes the evaluation of the ISPAD Science School for Physicians (ISSP) and for Healthcare Professionals (ISSHP) in terms of their efficiency and success. Methods: All past attendees from 2000–2019 ISSP and 2004–2019 ISSHP programs were invited to respond to an online survey to assess perceived outcomes of the programs on career development, scientific enhancement, scientific networking, and social opportunities. Results: One-third of the past ISSP (129/428), and approximately 43% of the past ISSHP attendees (105/245) responded to the surveys. Most of ISSP attendees reported that the programs supported their career (82%) by helping to achieve a research po…
Evaluation of touchscreen assistive technology for visually disabled users
2017
Touchscreen assistive technology is designed to support speech interaction between visually disabled people and mobile devices, allowing the use of a choreography of gestures to interact with a touch user interface. This paper presents the evaluation of VoiceOver, a screen reader in Apple Inc. products, made in the research project Visually impaired users touching the screen- A user evaluation of assistive technology together with six visually disabled test participants. The aim was to identify challenges related to the performance of the gestures for screen interaction and evaluate the system response to the gestures. The main results showed that most of the hand gestures were easy to perf…
Reconstruir la identidad de aprendiz en la FP. El efecto de las experiencias escolares y las culturas de enseñanza en la construcción identitaria
2020
La Formación Profesional en España sigue siendo una vía formativa escasamente desarrollada y prestigiada, a pesar de los importantes avances que se han registrado en los últimos años. El Grado Medio, en particular, presenta unos niveles de oferta y demanda muy inferiores a los de Bachillerato. Además, en términos globales, escolariza a un porcentaje mucho mayor de jóvenes de bajo estatus socioeconómico y cultural y con trayectorias de fracaso o desvinculación escolar durante la ESO. El objetivo de este artículo es analizar cómo construyen su identidad de aprendices los alumnos de FP en base a sus experiencias escolares y formativas -tanto anteriores como presentes- y a sus proyecciones de f…
A la nación por la clase. La campaña electoral socialista de noviembre de 1933
2017
El artículo analiza la campaña electoral realizada por el Partido Socialista Obrero Español para las elecciones de noviembre del 1933. A partir de la importancia que la nueva historia sociocultural y política atribuye a los discursos en la conformación de las identidades y la acción colectiva, el artículo intenta poner de manifiesto la capital importancia que tuvo el uso de la narrativa nacional por parte del socialismo. Con ello, se trata de llamar la atención sobre una vía central en la (re)construcción y difusión social de la identidad nacional española, como los procesos de politización y el rol que el socialismo pudo jugar a tal efecto. The article deals with electoral campaign carried…
Modeling Transit Flow Through Port Gates and Connecting Channel in Baltic Sea—Liepaja Port—Liepaja Lake System
2021
This study investigates a water transport features by extending Copernicus Marine Environment Service (CMEMS) to the Liepaja coast-port-channel-lake system with a two-way nested model. The Liepaja lake and Liepaja port are connected by Trade channel. The Liepaja port has three gates—the openings in wave breakers connecting the port aquatory with the Baltic sea. Each of gates has a corresponding dredged channel for securing the navigation. A hydrodynamic model is set up to study the flow and water level in this system. The area of the port gates, port and Trade channel are resolved by 33 m grid. The model results are verified against currents and sea level observations inside/outside port, T…
Analysis of computer user behavior, security incidents and fraud using Self-Organizing Maps
2019
Abstract This paper addresses several topics of great interest in computer security in recent years: computer users’ behavior, security incidents and fraud exposure on the Internet, due to their high economic and social cost. Traditional research has been based mainly on gathering information about security incidents and fraud through surveys. The novelty of the present study is given by the use of Self-Organizing Maps (SOMs), a visual data mining technique. SOMs are applied to two data sets acquired using two different methodologies for collecting data about computer security. First, a traditional online survey about fraud exposure, security and user behavior was used. Second, in addition …