Search results for "Video"

Performance analysis and comparison of symmetrical and asymmetrical configurations of evanescent mode ridge waveguide filters

2009

[1] In this paper, the trade-offs between out-of-band performance, filter length, power-handling capability, and insertion loss of both symmetrical and asymmetrical evanescent mode ridge rectangular waveguide filters are investigated. As a result, clear design methodologies for optimizing such performances are proposed. The developed methodologies are then applied to design several evanescent mode filters, and a complete performance analysis of the symmetrical and asymmetrical structures is performed. From the performance analysis results, the designer can choose the more appropriate filter topology and design strategy to satisfy the prescribed specifications.

Diagnostics of stator winding failures in wind turbine pitch motors using Vold-Kalman filter

2019

Pitch systems are among the most failure-prone components in wind turbines. Winding failures in pitch motors are common due to high start-up loads and poor ventilation. This article presents a diagnostics scheme that can detect the stator winding failures in the pitch motors under time-varying speed and load conditions. The proposed approach based on three-phase motor currents can be directly integrated into the motor drive and can be used for induction as well as permanent magnet synchronous machines. The extended Park's vector calculated on the motor currents is order tracked based on the supply frequency from the drive using Vold-Kalman filter. The approach is shown to be robust under ar…

Supporting scalable video transmission in MANETs through distributed admission control mechanisms

2009

Emerging multimedia applications over mobile devices are becoming very popular, especially over infrastructure wireless networks such as cellular and WLANs. However, providing this kind of services over infrastructureless networks like ad hoc networks presents many additional problems. One of these problems is how to share resources fairly among the users involved. In this article we propose a QoS framework supporting scalable video streaming in mobile ad hoc networks based on distributed admission control and video traffic awareness. Our framework promotes fairness between video flows in terms of resource consumption. It also guarantees a significant reduction of the idle times experienced…

Real-time hermeneutics : meaning-making in ludonarrative digital games

2015

Visualizing pectin polymer-polymer entanglement produced by interfacial water movement.

2020

In this report, we investigated the physical conditions for creating pectin polymer-polymer (homopolymer) entanglement. The potential role of water movement in creating pectin entanglement was investigated by placing water droplets-equivalent to the water content of two gel phase films-between two glass phase films and compressing the films at variable probe velocities. Slow probe velocity (0.5 mm/sec) demonstrated no significant debonding. Corresponding videomicroscopy demonstrated an occasional water bridge, but no evidence of stranding or polymer entanglement. In contrast, fast probe velocity (5 mm/sec) resulted in 1) an increase in peak adhesion strength, 2) a progressive debonding curv…

Similarity Mashups for Recommendation

2013

Recommendation systems are becoming a state of the art for web-based systems as they produce additional product exposure and customer satisfaction. The Semantic Web and mashups can improve recommendation systems and provide new ways for their creation. In the web it is possible to analyze product descriptions and to use Linked Data for characterizing the similarity of objects or of objects and user interests. In this chapter, we give a brief overview of existing technical approaches and tools for creating recommendation systems that can be used to create mashups as recommendation systems.

The political irruption of short video: Is TikTok a new window for Spanish parties?

2022

This paper analyses the use of TikTok by the main Spanish parties. The article studies the intensity of use of the short video social network by the accounts of the Partido Popular, Vox, Podemos and Ciudadanos, their narratives and themes, and the views obtained based on them. The research applies a content analysis to the videos published by these groups from account creation until the end of 2020, a period in which the PSOE had no presence. The corpus amounts to 182 units of analysis. The results show that the partisan use of TikTok is still in its infancy and that its intensive use is limited to newly emerging parties, with more favourable results for the most polarised groupings. Moreov…

Kiedy dziecko staje się autorytetem...O recepcji medialnych tekstów kultury

2017

Artykuł prezentuje sylwetki oraz twórczość młodych, popularnych vlogerów. Jego celem jest odpowiedź na pytania: Jak odbierają youtuberów ich rówieśnicy, a jak osoby dorosłe? Jakie cechy youtubera podobają się młodym widzom? Odpowiedzi na te pytania wprowadzą czytelnika w dyskusję o autorytecie. Kluczowym problemem podejmowanym w tekście jest postrzeganie dziecka jako autorytetu. W artykule zostaną zbadane elementy, które budują wizerunek niedorosłego jako wzoru dla innych.

Prank – gdzie przebiega gra-nica internetowej rozgrywki?

2019

Artykuł podejmuje temat pranku – gry, która podbija obecnie internet, a dokładnie przestrzeń wideoblogów, gdzie realizuje się z największym rozmachem. Celem tekstu jest zdefiniowanie pojęcia pranku przede wszystkim w odwołaniu do jego przedstawień w wideoblogach. Istotną część wywodu stanowi ukazanie przebiegu pranków uznanych za najbardziej ekstremalne – pozorujące śmierć, wypadek, ciążę, odurzenie itp. Całość rozważań zmierza do odpowiedzi na pytania: czy można wyznaczyć granice owej gry? Czy grających obowiązują jakiekolwiek normy i ograniczenia? I wreszcie – jakie są lub mogą być niepożądane skutki tej rozgrywki?

"So today I want to talk to you guys about something" : coming out videos and the stance features of YouTube celebrity-fan relationships

2017

YouTube kasvattaa jatkuvasti suosiotaan viihdepalveluna ja on tuonut suosituimmille sisällöntuottajille eli ’tubettajille’ myös laajaa julkisuutta. YouTube-julkisuutta ei ole kuitenkaan ilmiönä tutkittu vielä kovinkaan paljon, ja erityisesti YouTube-videoiden multimodaaliset piirteet ovat jääneet toistaiseksi tutkimushuomion ulkopuolelle. Videopalvelussa on myös huomattava queer-edustus, ja seksuaalivähemmistöjen videotuotantoja onkin tutkittu jo jonkin verran lähinnä sosiologisesta näkökulmasta käsin. Tämän tutkimuksen tarkoituksena on tutkia kielitieteellisen stance-käsitteen avulla, miten suositut tubettajat asennoituvat videoissaan yleisöään ja fanejaan kohtaan. Tutkimusaineistona on kä…