Search results for " INTERNET"
showing 10 items of 1234 documents
Taxonomy of generative adversarial networks for digital immunity of Industry 4.0 systems
2021
Abstract Industry 4.0 systems are extensively using artificial intelligence (AI) to enable smartness, automation and flexibility within variety of processes. Due to the importance of the systems, they are potential targets for attackers trying to take control over the critical processes. Attackers use various vulnerabilities of such systems including specific vulnerabilities of AI components. It is important to make sure that inappropriate adversarial content will not break the security walls and will not harm the decision logic of critical systems. We believe that the corresponding security toolset must be organized as a trainable self-protection mechanism similar to immunity. We found cer…
Cybersex in the “Net generation”: Online sexual activities among Spanish adolescents
2016
The internet offers several opportunities to explore sexuality among adolescents. However, some studies have also revealed problematic effects of cybersex in earlier stages. Despite this, few studies analyze the online sexual behavior among adolescents, even less in Spain where there is very little data. For this reason, our aim is to examine the use of internet for sexual purposes among Spanish adolescents, including gender differences. Three hundred and twenty-two adolescents completed an ad-hoc questionnaire and the Spanish version of the Internet Sex Screening Test. In general, boys report more cybersex than girls do, for example, in masturbating while the Internet (60.6% of boys and 7.…
Col : A Data Collection Protocol for Vanet
2012
International audience; In this paper, we present a protocol to collect data within a vehicular ad hoc network (VANET). In spite of the intrinsic dynamic of such network, our protocol simultaneously offers three relevant properties: (1) It allows any vehicle to collect data beyond its direct neighborhood (i.e., vehicles within direct communication range) using vehicle-to-vehicle communications only (i.e., the infrastructure is not required); (2) It tolerates possible network partitions; (3) It works on demand and stops when the data collection is achieved. To the best of our knowledge, this is the first collect protocol having these three characteristics. All that is chiefly obtained thanks…
Communication-Efficient Federated Learning in Channel Constrained Internet of Things
2022
Federated learning (FL) is able to utilize the computing capability and maintain the privacy of the end devices by collecting and aggregating the locally trained learning model parameters while keeping the local personal data. As the most widely-used FL framework,Jederated averaging (FedAvg) suffers an expensive communication cost especially when there are large amounts of devices involving the FL process. Moreover, when considering asynchronous FL, the slowest device becomes the bottleneck for the cask effect and determines the overall latency. In this work, we propose a communication-efficient federated learning framework with partial model aggregation (CE-FedPA) algorithm to utilize comp…
Adversarial Attack’s Impact on Machine Learning Model in Cyber-Physical Systems
2020
Deficiency of correctly implemented and robust defence leaves Internet of Things devices vulnerable to cyber threats, such as adversarial attacks. A perpetrator can utilize adversarial examples when attacking Machine Learning models used in a cloud data platform service. Adversarial examples are malicious inputs to ML-models that provide erroneous model outputs while appearing to be unmodified. This kind of attack can fool the classifier and can prevent ML-models from generalizing well and from learning high-level representation; instead, the ML-model learns superficial dataset regularity. This study focuses on investigating, detecting, and preventing adversarial attacks towards a cloud dat…
More Relevant Today Than Ever: Past, Present and Future of Media Performance Research
2020
Media performance is constitutive for functioning democracies. But what is the situation regarding media performance in the age of digitalisation? And how can media performance continue to be assured under the current difficult economic conditions for the news industry? In this essay, we give a short overview of how media performance research has developed from the introduction of private broadcasting to the spread of the Internet and social media. In the course of this development, the initial focus of media performance research on media content has broadened to include media quality from the user perspective. We show how the contributions to this thematic issue relate with existing lines …
Social Media as an Opinion Formulator: A Study on Implications and Recent Developments
2019
Social media has a great influence on how information reaches us and how we form an opinion based on it. For many users, social media increases the variety of information and ensure its accessibility across different platforms. However, recent years have seen an exponential increase in the power of social media. Most often, the forwarding and sharing of journalistic articles serve the recommendation from the user's point of view, but recently, these platforms have been developed into an echo chamber to transport additional information or even a critical attitude. In addition, the uncontrolled influx of social media in different parts of the world favors phenomena such as fake news and socia…
La enseñanza digital en serio y el derecho a la educación en tiempos del coronavirus
2021
Especialmente desde una perspectiva jurídica, el estudio analiza las medidas en el ámbito educativo adoptadas en a nivel mundial y en España en razón del coronavirus: la “suspensión sin suspensión” de la educación especialmente a través de la enseñanza digital. Sin embargo, la educación digital se ha considerado “inferior”, “excepcional” y sólo “complementaria” de la presencial y fuente de graves barreras y peligros para la educación. Así ha sido en el ámbito internacional y también para el TEDH, el TC y nuestra legislación. Se tiene en cuenta el especial peligro de la desigualdad en la educación digital y, ya en el caso de la pandemia, se describen algunas medidas especiales de equidad e i…
Análisis de la bondad de múltiples indicadores para el diagnóstico de la adicción al cibersexo
2021
El uso de Internet con propósitos sexuales (p.e., visionado de pornografía o contacto sexual mediante chat o cámara web) resulta una práctica cada vez más generalizada. Si bien en la mayoría de los casos se realiza de forma recreativa, en algunas ocasiones puede sobrevenir compulsivo, incontrolado y asociado a deterioro funcional en varios ámbitos (adicción al cibersexo). Las escalas de las que disponemos para su diagnóstico se han visto limitadas a la hora de identificar estos pacientes debido a que algunos indicadores diagnósticos han perdido especificidad: por ejemplo, el tiempo online con fines sexuales parece no discriminar usuarios problemáticos debido al uso cada vez más intensivo de…
La diffusion des sites internet en .fr dans l'espace périurbain et rural français
2000
ACL; International audience; II existe à l'heure actuelle très peu d'études sur la localisation et la diffusion des sites Internet compte tenu de la rareté des sources qui n'intègrent pas pour la plupart la dimension géographique (échelle nationale). A partir des fichiers de l'AFNIC, il est possible de spatialiser l'implantation des sites Internet uniquement à l'échelle des codes postaux. Pour évaluer la situation de la diffusion des sites Internet en milieu rural, le zonage en aire urbaine (ZAU) fournit une grille spatiale d'analyse pertinente.En août 1999, seulement 10 % des 40 000 sites recensés sont localisés en zone rurale et autant en milieu périurbain. Le réseau des petites villes (d…