Search results for "Communications"

2018

Adolescents with a strong tendency for irrational task delay (i.e., high trait procrastination) may be particularly prone to use Internet applications simultaneously to other tasks (e.g., during homework) and in an insufficiently controlled fashion. Both Internet multitasking and insufficiently controlled Internet usage may thus amplify the negative mental health implications that have frequently been associated with trait procrastination. The present study explored this role of Internet multitasking and insufficiently controlled Internet use for the relationship between trait procrastination and impaired psychological functioning in a community sample of N = 818 early and middle adolescent…

A comparison study of evolutive algorithms for solving the partitioning problem in distributed virtual environment systems

2004

Fast Internet connections and the widespread use of high performance graphic cards are making Distributed Virtual Environment (DVE) systems very common nowadays. However, there are several key issues in these systems that should still be improved in order to design a scalable and cost-effective system. One of these key issues is the partitioning problem. This problem consists of efficiently assigning clients (3D avatars) to the servers in the system. In this paper, we present a comparison study of different modern heuristics for solving the partitioning problem in DVE systems, as an alternative to the ad hoc heuristic proposed in the literature. Performance evaluation results show that some…

Low-Cost Sensor Based on SDR Platforms for TETRA Signals Monitoring

2021

The paper presents the design and implementation of an electromagnetic field monitoring sensor for the measurement of the Terrestrial Truncked Radio (TETRA) signals using low-cost software defined radio (SDR) platforms. The sensor includes: an SDR platform, a Global Positioning System (GPS) module and a hardware control module. Several SDR platforms having different resolutions of the analog–digital converters were tested in the first phase. The control module was implemented in two variants: a fixed one, using a laptop, and a mobile one, using a Raspberry Pi. The tests demonstrate the following achieved performances: instantaneous acquisition band of 5.12 MHz

Diez años de smartphones. Un análisis semiótico-comunicacional del impacto social de la telefonía móvil

2018

El teléfono móvil con conexión a Internet (o smartphone) es la tecnología que más rápidamente se ha difundido en la sociedad actual y ha producido hábitos decisivos en los estilos de vida de la ciudadanía. Esta investigación examina desde una perspectiva semiótica-comunicacional la relación de diferentes sectores de la sociedad de hoy con estos dispositivos. Se sirve del universo narrativo del programa “Conectados” de la serie Salvados, programa dedicado precisamente al uso social de esta tecnología justo a los diez años de la aparición del primer smartphone. A través del análisis de los contenidos volcados por los diversos actores que intervienen –adolescentes, adultos, familias, escuela y…

Integrated multimedia publishing: combining TV and newspaper content on personal channels

1999

Abstract Fast networks enable the delivery of TV and newspaper content over an Internet connection. This enables new types of integrated publications that include features from both media. The IMU system, described in this paper, automatically integrates newspaper and TV content into a continuously updated World Wide Web-multimedia publication. An active proxy server pursues the integration and delivers the publication through an ATM fibre link to fast networks, such as the bi-directional cable TV network and the ADSL telephone network, providing near-TV quality. The users read the IMU publication from the Internet on their PCs with normal World Wide Web-browsers. You can also watch the pub…

Distance-related energy consumption analysis for mobile/relay stations in heterogeneous wireless networks

2010

While the availability of more than one mobile or wireless technologies is enhancing the ubiquity of the Internet access, the corresponding energy consumption effects on mobile station battery for connection selection has not been investigated in depth yet. In this paper, a heterogeneous wireless network, which consists of three constituent networks, is studied with respect to the amount of data communicated and the battery operation time. Four alternative hybrid paths for separate uplink and downlink traffic, each involving more than one network, are analyzed with respect to energy consumption aspects of the mobile (and relay) station. The energy in these paths is analyzed mainly by consid…

Influence of integrated marketing communication tools upon consumers’ buying decisions in the context of sustainability

2019

A topical business subject of nowadays is the influence of integrated marketing communications (IMC) for sustainability upon various consumer audiences and their buying decisions. From the standpoint of businesses the use of integrated marketing communications in product promotion contributes to the consumption of sustainable, ecological products and, consequently, a healthy lifestyle, yet the factors influencing buyer’s buying decisions still remain topical. In this research the authors surveyed buyers of Latvian food retail chains to find out the influence of promotion-related integrated marketing communication tools for sustainability upon buyers’ buying decisions. The research brings co…

Generalization of Linked Canonical Polyadic Tensor Decomposition for Group Analysis

2019

Real-world data are often linked with each other since they share some common characteristics. The mutual linking can be seen as a core driving force of group analysis. This study proposes a generalized linked canonical polyadic tensor decomposition (GLCPTD) model that is well suited to exploiting the linking nature in multi-block tensor analysis. To address GLCPTD model, an efficient algorithm based on hierarchical alternating least squa res (HALS) method is proposed, termed as GLCPTD-HALS algorithm. The proposed algorithm enables the simultaneous extraction of common components, individual components and core tensors from tensor blocks. Simulation experiments of synthetic EEG data analysi…

Practitioners’ Experiences of Social Media in Career Services

2015

A growing number of career practitioners and career centers are reaching out to individuals and community members in new ways by integrating various social media tools, such as Facebook, Twitter, and LinkedIn, into their professional practices (e.g., Dyson, 2012; Osborn & LoFrisco, 2012). To many, social media are simply online tools to share information and to communicate and socialize with one another. In the broader sense, social media is defined as a process whereby individuals and groups build a common understanding and meaning with contents, communities, and Web 2.0 technology (e.g., Ahlqvist, Back, Heinonen, & Halonen, 2010; Kangas, Toivonen, & Back, 2007).An extensive body of litera…

La eclosión de la prensa satírica en España (1868-1874)

2018

espanolEl nacimiento y consolidacion de la prensa satirica en el periodo revolucionario de 1868-1874, constituye el tema central de este trabajo. Convertidos en instrumento de propaganda por los liberales desde 1808, los periodicos satiricos pronto demostraron su capacidad de influencia sobre un pueblo que, si no podia leer, al menos podia escuchar recitados sus textos o ver sus dibujos comicos. A traves de estos periodicos se desarrollo una intensa y eficaz via de politizacion que culmina en la situacion revolucionaria de 1868-1874 con la proliferacion de cabeceras y la emergencia de sendas culturas politicas: una revolucionaria democratica, otra contrarrevolucionaria carlista. EnglishThe …