Search results for "Network"
showing 10 items of 7718 documents
Identifying Oscillatory Hyperconnectivity and Hypoconnectivity Networks in Major Depression Using Coupled Tensor Decomposition
2021
AbstractPrevious researches demonstrate that major depression disorder (MDD) is associated with widespread network dysconnectivity, and the dynamics of functional connectivity networks are important to delineate the neural mechanisms of MDD. Cortical electroencephalography (EEG) oscillations act as coordinators to connect different brain regions, and various assemblies of oscillations can form different networks to support different cognitive tasks. Studies have demonstrated that the dysconnectivity of EEG oscillatory networks is related with MDD. In this study, we investigated the oscillatory hyperconnectivity and hypoconnectivity networks in MDD under a naturalistic and continuous stimuli…
Altered EEG Oscillatory Brain Networks During Music-Listening in Major Depression
2021
To examine the electrophysiological underpinnings of the functional networks involved in music listening, previous approaches based on spatial independent component analysis (ICA) have recently been used to ongoing electroencephalography (EEG) and magnetoencephalography (MEG). However, those studies focused on healthy subjects, and failed to examine the group-level comparisons during music listening. Here, we combined group-level spatial Fourier ICA with acoustic feature extraction, to enable group comparisons in frequency-specific brain networks of musical feature processing. It was then applied to healthy subjects and subjects with major depressive disorder (MDD). The music-induced oscil…
The Junta de Damas de Honor y Mérito (Committee of Ladies of Honour and Merit): Children’s parchments in the Madrid Foundling House (1802)
2023
A finales del siglo XVIII, la Casa de Expósitos de Madrid recibía unos tres o cuatro bebés al día, aproximadamente mil al año. Las tasas de mortalidad eran enormes: más del 90% de los niños morían durante el primer mes de vida. En 1799, una sociedad femenina, la Junta de Damas de Honor y Mérito, sustituyó al anterior comité masculino y asumió la totalidad de las funciones. Este capítulo muestra cómo utilizar la documentación elaborada por la Junta como fuente primaria para recurrir a sus prácticas científicas con el fin de reducir los índices de mortalidad. By the late eighteenth century, the Madrid Foundling House received around three to four babies a day, approximately a thousand babies …
A Novel Bio-Inspired Approach for High-Performance Management in Service-Oriented Networks
2021
Service-continuity in distributed computing can be enhanced by designing self-organized systems, with a non-fixed structure, able to modify their structure and organization, as well as adaptively react to internal and external environment changes. In this paper, an architecture exploiting a bio-inspired management approach, i.e., the functioning of cell metabolism, for specialized computing environments in Service-Oriented Networks (SONs) is proposed. Similar to the processes acting in metabolic networks, the nodes communicate to each other by means of stimulation or suppression chains giving rise to emergent behaviors to defend against foreign invaders, attacks, and malfunctioning. The mai…
E-Fairs: a Cyber-Physical System for Aggregation and Economy of Scale in e-Commerce
2018
In recent years, the e-commerce arena has deeply changed because of the advent of new business models and the growing weight of huge global actors like Amazon. Some business models create competition between users, and the product price tends to rise (e.g., online auctions); other models, including group-buying, make users cooperate, and the price tends to go down. The present study extends the group-buying model and proposes a cyber-physical system called e-fair, in which both sellers and buyers are grouped to negotiate on a specific product or service. E-fairs minimize the global purchase price and the shipping resources respectively with the aggregation of demand and supply as well as or…
Illusion of knowledge through Facebook news? Effects of snack news in a news feed on perceived knowledge, attitude strength, and willingness for disc…
2020
Abstract Research indicates that using social network sites as a source for news increases perceived knowledge even if, objectively, people fail to acquire knowledge. This might result from the frequent repetition of topics in news posts caused by multiple news outlets posting about the same news topics and the algorithm that favors similar postings. These repeated encounters can have a positive effect on the perception of knowing more, even if actual learning hardly occurs. An experiment (N = 810, representative of German Internet users) tested these assumptions. Participants were assigned to one of four groups and received a news feed with no information, few news posts, many news posts, …
Desarrollo, territorio y capital social. Un análisis a partir de dinámicas relacionales en el desarrollo rural
2013
Si bien parece ampliamente aceptada la idea de que una de las principales fuentes de capital social son las redes sociales, llama mucho la atención la escasez de estudios que utilizan el Análisis de Redes Sociales (ARS) para profundizar en el análisis y medición del capital social. Esto es especialmente significativo si tenemos en cuenta la ingente cantidad de publicaciones que existen sobre este concepto. El propósito de este trabajo es llevar a cabo una aproximación al potencial del análisis de redes sociales (ARS) para analizar la presencia y formas de capital, en concreto, en el marco de las agrupaciones para el desarrollo rural (Grupos LEADER), y en su valor complementario a otras técn…
Italian Amateur Pop-Rock Musicians on Facebook
2017
This chapter investigates how and why amateur musicians use social networking sites, employing a mixed-methods approach. Attention is focused on four big Italian Facebook communities of pop-rock musicians: drums, bass, guitar, and keyboard players (overall, 2,101 active users), analyzing the relational and textual data extracted from the web. The chapter analyzes the network structures emerging from the interactions among the users. It also identifies and maps the main areas of discussion (sound shaping, studio recording, marketplace, musical references, computer production, and relations) and the latent semantic dimension characterizing Facebook users’ activities, through social network an…
Islands of vulnerability and resilience: Manufactured stereotypes?
2018
This paper interrogates the aspects of islandness labelled ‘vulnerability’ and ‘resilience’ through analysing the concepts’ definitions from a development perspective. The investigation is conducted through the lens of four assumed islandness aspects: boundedness, smallness, isolation, and littorality. Discussion examines how and why core concepts of vulnerability and resilience have emerged from island studies, demonstrating how these two aspects of islandness are socially and culturally constructed, can influence development approaches taken, and are enhanced by island geographies. Drawing on insights from island geographies around the world, while comparing island and non-island perspect…
Evaluación de necesidades y expectativas ante la construcción de un espacio interactivo de comunicación, información y aprendizaje histórico-educativo
2015
Conscientes de las posibilidades pedagógicas, participativas y de colaboración científica de la Web 2.0, los autores del presente artículo se plantean la detección de las necesidades y expectativas hacia la creación de una plataforma virtual delimitada por un espacio interactivo o red social para la Historia de la Educación y el Patrimonio Histórico-educativo. Gracias a la evaluación mediante un cuestionario en el que han participado un grupo de expertos docentes e investigadores de Historia de la Educación, se han obtenido una serie de conclusiones a tener en cuenta respecto a determinados aspectos (conocimiento y uso, expectativas, componentes, etc.) que orientarán la construcción ad hoc …