Search results for "NETWORKING"
showing 10 items of 1776 documents
A Deep Learning Model for Automatic Sleep Scoring using Multimodality Time Series
2021
Sleep scoring is a fundamental but time-consuming process in any sleep laboratory. Automatic sleep scoring is crucial and urgent to help address the increasing unmet need for sleep research. Therefore, this paper aims to develop an end-to-end deep learning architecture using raw polysomnographic recordings to automate sleep scoring. The proposed model adopts two-dimensional convolutional neural networks (2D-CNN) to automatically learn features from multi-modality signals, together with a "squeeze and excitation" block for recalibrating channel-wise feature responses. The learnt representations are finally fed to a softmax classifier to generate predictions for each sleep stage. The model pe…
Aviokompāniju reklāmu raksturojums sociālo tīklu tīmekļa vietnēs Facebook un Twitter
2018
Reklāma ir profesionālā diskursa žanrs, kas tiek izmantots komunikācijai ar sabiedrību. Mūsdienās internets un sociālo tīklu tīmekļa vietnes tiek bieži izmantotas reklāmas nolūkos. Šī pētījuma mērķis bija analizēt lingvistiskās un paralingvistiskās iezīmes sociālo tīklu tīmekļa vietnēs Facebook un Twitter publicētajās aviokompāniju reklāmās. Pētījums tika balstīts uz Kuka (Cook, 1992) piedāvāto diskursa analīzes modeli, kas ietver teksta un konteksta analīzi. Pētījuma rezultāti parādīja, ka šo reklāmu tekstos izmantotā valoda ir vienkārša un lasītājam draudzīga, kas ir panākts, pārsvarā izmantojot vienkāršus teikumus, kā arī lietojot kontrakcijas un saīsinājumus. Tā arī imitē sarunu ar lasī…
Technostress and social networking services: Explaining users' concentration, sleep, identity, and social relation problems
2018
It is common for users of social networking sites and services (SNS) to suffer from technostress and the various associated strains that hinder their well‐being. Despite prior SNS stress studies having provided valuable knowledge regarding SNS stressors and their use consequences, they have not examined the various strains related to well‐being that those stressors can create nor the underlying SNS characteristics. To address this gap in the research, we used a qualitative approach involving narrative interviews. As a contribution, our findings reveal four types of strains related to well‐being (concentration problems, sleep problems, identity problems, and social relation problems) as well…
Defining collaboration rules in mechatronic Industry
2011
Small and medium companies in order to survive in the global market should promote the creation of partnerships and business networking. Thanks to business networks, in fact, they can reach efficiencies, improve their knowledge and increase their degree of internationalization. The industrial district is a very common type of business network model, especially in Italy. Belonging to an industrial district increases companies inclination to sign inter-firm collaboration contracts such as alliances, outsourcing and joint ventures. However, some Italian districts, mostly those recently constituted and localized in the south of Italy, such as the Sicilian Mechatronic District (SMD), lacks of ac…
Strategic alignment of business network forms and single companies’ objectives
2009
In this paper the most significant theories on firm networking are reviewed and an innovative strategic perspective that underlies at firm network organization is proposed. It is argued that networks are differently organized according to three basic strategic objectives: gaining efficiency, collecting knowledge, pursuing globalization. The research is supported by secondary data analysis based on a sample of about 115 case studies published in different journals and magazines.
Building interpersonal trust in business networks: enablers and roadblocks
2019
Purpose - This study examines how interpersonal trust forms in business networks and anchors relationships. Trust can be seen as a required factor and enabler for co-creation that is needed when business models are created. This study draws on empirical data from a case study of a Finnish business network in the healthcare and pharmaceutical industries. It seeks to answer the research question: How does interpersonal trust start to develop at the business network level and how it can be supported? Design/ methodology/approach – This article draws on a case study of a Finnish business network which was developed through theme interviews and observation conducted in 2012. Findings - The findi…
Fast 3D Ray Tracing for Indoor Coverage Solutions
2016
Optimal wireless indoor network planning requires huge number of iterations and evaluations of indoor coverage for each antenna location until an optimal solution is reached. Consequently, accurate and scalable calculation of power strength for indoor scenarios becomes necessary. The contribution in this paper is to reduce the complexity of 3D ray tracing for deterministic indoor power prediction. In order to achieve that while preserving the accuracy, image theory with feasible reflection volume as preprocessing approach is introduced. This proposed algorithm stores the image, its feasible reflection volume and valid area of receiving points. Significant complexity reduction is achieved by…
Learning-based multiresolution transforms with application to image compression
2013
In Harten's framework, multiresolution transforms are defined by predicting finer resolution levels of information from coarser ones using an operator, called prediction operator, and defining details (or wavelet coefficients) that are the difference between the exact and predicted values. In this paper we use tools of statistical learning in order to design a more accurate prediction operator in this framework based on a training sample, resulting in multiresolution decompositions with enhanced sparsity. In the case of images, we incorporate edge detection techniques in the design of the prediction operator in order to avoid Gibbs phenomenon. Numerical tests are presented showing that the …
Improving IEEE 802.11 Performance in Chain Topologies through Distributed Polling and Network Coding
2009
Wireless multi-hop networks often rely on the use of IEEE 802.11 technology. Despite of the robustness of the IEEE 802.11 Distributed Coordination Function (DCF) for working in various network scenarios, it has been proven that critical inefficiencies can arise in the case of multi-hop packet forwarding. In this paper, we propose a MAC scheme, based on the virtualization of the Point Coordination Function, optimized for working on chain topologies with bidirectional traffic flows. Our scheme is based on a token-like access mechanism coupled with network coding. The basic idea is the use of multiple Point Coordinators (PCs) along the node chain, which are elected by passing special token fra…
Does News Frame Affect Free Movement Attitudes? A Comparative Analysis
2021
The policy of free movement—one of the core principles of the European Union—has become increasingly politicized. This makes it more important to understand how attitudes toward free movement are shaped, and the role of the media. The purpose of this study is therefore to investigate how news frames affect attitudes toward free movement, and whether education moderates framing effects. The findings from a survey experiment conducted in seven European countries show that the effects are few and inconsistent across countries. This suggest that these attitudes are not easily shifted by exposure to a single news frame.