Search results for "EFE"
showing 10 items of 5785 documents
The “Refugee Crisis,” Immigration Attitudes, and Euroscepticism
2019
Between 2015 and 2017, the European Union (EU) was confronted with a major crisis in its history, the so-called “European refugee crisis.” Since the multifaceted crisis has provoked many different responses, it is also likely to have influenced individuals’ assessments of immigrants and European integration. Using data from three waves of the European Social Survey (ESS) — the wave before the crisis in 2012, the wave at the beginning of the crisis in 2014, and the wave right after the (perceived) height of the crisis in 2016 — we test the degree to which the European refugee crisis increased Europeans’ anti-immigrant sentiment and Euroscepticism, as well as the influence of Europeans’ anti-…
Image-Evoked Affect and its Impact on Eeg-Based Biometrics
2019
Electroencephalography (EEG) signals provide a representation of the brain’s activity patterns and have been recently exploited for user identification and authentication due to their uniqueness and their robustness to interception and artificial replication. Nevertheless, such signals are commonly affected by the individual’s emotional state. In this work, we examine the use of images as stimulus for acquiring EEG signals and study whether the use of images that evoke similar emotional responses leads to higher identification accuracy compared to images that evoke different emotional responses. Results show that identification accuracy increases when the system is trained with EEG recordin…
ES1D: A Deep Network for EEG-Based Subject Identification
2017
Security systems are starting to meet new technologies and new machine learning techniques, and a variety of methods to identify individuals from physiological signals have been developed. In this paper, we present ESID, a deep learning approach to identify subjects from electroencephalogram (EEG) signals captured by using a low cost device. The system consists of a Convolutional Neural Network (CNN), which is fed with the power spectral density of different EEG recordings belonging to different individuals. The network is trained for a period of one million iterations, in order to learn features related to local patterns in the spectral domain of the original signal. The performance of the…
2018
Physical fitness is crucial to warfighters' performance in the battlefield. Previous studies have shown negative changes in their hormonal and neuromuscular responses induced by military field training (MFT). The purpose of this study was to investigate the changes in hormonal and immunological values and body composition during a prolonged MFT and to find out how warfighters' physical condition influences these changes. Conscripts (n = 49, age 20 ± 1 years, height 179 ± 9 cm, body mass 73.8 ± 7.8 kg, fat 12.6 ± 3.7% and BMI 23 kg/m²) were measured before, during, after MFT, and after a 4-day recovery period. Serum insulin-like growth factor-1 (IGF-1), tumor necrosis factor alpha (TNF-α), i…
Towards a Security Competence of Software Developers
2020
Software growth has been explosive as people depend heavily on software on daily basis. Software development is a human-intensive effort, and developers' competence in software security is essential for secure software development. In addition, ubiquitous computing provides an added complexity to software security. Studies have treated security competences of software developers as a subsidiary of security engineers' competence instead of software engineers' competence, limiting the full knowledge of the security competences of software developers. This presents a crucial challenge for developers, educators, and users to maintain developers' competences in security. As a first step in pushi…
Finding Software Bugs in Embedded Devices
2021
AbstractThe goal of this chapter is to introduce the reader to the domain of bug discovery in embedded systems which are at the core of the Internet of Things. Embedded software has a number of particularities which makes it slightly different to general purpose software. In particular, embedded devices are more exposed to software attacks but have lower defense levels and are often left unattended. At the same time, analyzing their security is more difficult because they are very “opaque”, while the execution of custom and embedded software is often entangled with the hardware and peripherals. These differences have an impact on our ability to find software bugs in such systems. This chapt…
From “Mano Dura” to “Enfrentamiento Directo”: swings of public policies in El Salvador
2019
RESUMEN Introduccion: El presente trabajo analiza las cuatro principales politicas publicas de seguridad contra las pandillas en El Salvador: Mano Dura (2003-2004), Super Mano Dura (2004-2009), Tregua entre pandillas (2012-2014) y Enfrentamiento Directo (2014-2019). El objetivo es identificar la influencia de estas politicas sobre la violencia. Materiales y Metodos: Se trata de una investigacion cualitativa apoyada en 12 entrevistas y el relato de vida con las que se explora la responsabilidad gubernamental frente al problema de la violencia en El Salvador. El trabajo de campo se efectuo durante 7 meses, entre septiembre de 2016 y marzo de 2017. El tratamiento de la informacion se efectuo m…
Condicionamiento de preferencia de lugar: un modelo animal para evaluar las propiedades motivacionales de las drogas
2016
espanolEn el presente trabajo mostramos la tecnica del condicionamiento de preferencia de lugar (CPL) como un modelo util en el estudio de las propiedades motivacionales de las drogas. Se presentan los antecedentes de la tecnica y se discuten algunas cuestiones metodologicas que es necesario considerar para disenar una investigacion empleando el modelo de CPL, como los diferentes tipos de aparatos disponibles, las diferentes fases del protocolo y sus posibles variaciones, el tipo de diseno (sesgado vs. no sesgado) o la necesidad de considerar los efectos del tiempo. Posteriormente se discuten algunas cuestiones a tener en cuenta a la hora de interpretar los datos obtenidos, como que es lo q…
Anomalías congénitas cardíacas en la Comunitat Valenciana 2007-2014, el registro poblacional de anomalías congénitas
2020
Resumen: Introducción: Las anomalías congénitas cardíacas (ACC) son el tipo de anomalías congénitas (AC) mayores de más prevalencia y gravedad. El objetivo fue determinar la frecuencia y distribución de las ACC en la Comunitat Valenciana desde 2007 hasta 2014, describiendo las características comunes de los pacientes y sus madres. Material y Métodos: Se seleccionaron del Registro poblacional de AC de la Comunitat Valenciana los pacientes con ACC nacidos vivos, nacidos muertos e interrupciones voluntarias del embarazo entre 2007-2014 (códigos Q20-Q26 de la Clasificación Internacional de Enfermedades 10.ª Revisión, Asociación Pediátrica Británica). Se calculó la prevalencia por 10.000 nacidos…
Ecological and genomic features of two widespread freshwater picocyanobacteria
2018
We present two genomes of widespread freshwater picocyanobacteria isolated by extinction dilution from a Spanish oligotrophic reservoir. Based on microscopy and genomic properties, both picocyanobacteria were tentatively designated Synechococcus lacustris Tous, formerly described as a metagenome assembled genome (MAG) from the same habitat, and Cyanobium usitatum Tous, described here for the first time. Both strains were purified in unicyanobacterial cultures, and their genomes were sequenced. They are broadly distributed in freshwater systems; the first seems to be a specialist on temperate reservoirs (Tous, Amadorio, Dexter, Lake Lanier, Sparkling), and the second appears to also be abund…