Search results for "DCA"
showing 10 items of 188 documents
Latvijas Vēstures Institūta Žurnāls. 2014, Nr. 2 (91)
2014
Valsts kultūrkapitāla fonds
Personalized multimedia touristic services for hybrid broadcast/broadband mobile receivers
2010
This paper presents the topology of a multimedia tourism service that targets mobile devices equipped with broadband and either multicast or broadcast access capabilities. Multicast / Broadcast access is used to handle the delivery of multimedia data to many simultaneous users in the service area. The solution adopted is based on existing standards for mobile TV services, but introducing features that enable the provision of generic multimedia services on top of mobile hybrid broadband and broadcast networks. Furthermore, this paper shows how to use standardized interfaces originally defined for interactive mobile TV broadcasting to build personalized mobile multimedia services that do not …
Dimēriskas dCas9-FokI sistēmas izveidošana efektīvai zīdītāju šūnu genoma rekombinēšanai
2015
CRISPR/Cas9 sistēma nodrošina robustu un plaši pielietojamu genoma rekombinēšanas tehnoloģiju, kas paver iespēju zinātniekiem precīzi manipulēt ar specifickiem genoma elementiem, ko izmantot gēnu funkciju pētījumos bioloģijā un slimību attīstībā. Darba mērķis bija izveidot un optimizēt dCas9-FokI sistēmu, kas nodrošinātu stabilu un specifisku genoma rekombinēšanu cilvēka šūnās. Mēs piedāvājam alternatīvu tehnoloģiju, kas ir balstīta uz RNS vadītu dCas9-FokI sistēmu un piedāvā ievērojamu genoma rekombinēšanas potenciālu ar samazinātu nespecifiskās šķelšanas (off-targeting) efektu. Iegūtie dati liecina, ka šī izveidotā sistēma var tikt efektīvi izmantota genoma rekombinēšanai zīdītāju šūnās. …
Design of an efficient digital down-converter for a SDR-based DVB-S receiver
2007
This paper presents the design of an area-power efficient digital down-converter suitable for broadband communication systems. The DVB-S standard has been used as a design example. It has been shown that by selecting a bandpass sampling to generate only one spectral image, the case in which the relationship between the digital carrier frequency and the sampling frequency is 1/4, not only gives the smallest area but the lowest power consumption.
Reply to Dr Michaudet al.
2015
There is no abstract
Looking over the channel: The balance of media coverage about the “refugee crisis” in Germany and the UK
2022
Abstract This study compares the balance of newspaper and television news coverage about migration in two countries that were differently affected by the so-called “refugee crisis” in 2015 in terms of the geopolitical involvement and numbers of migrants being admitted. Based on a broad consensus among political elites, Germany left its borders open and received about one million migrants mainly from Syria during 2015. In contrast, the conservative British government was heavily attacked by oppositional parties for closing Britain’s borders and, thus, restricting immigration. These different initial situations led to remarkable differences between the news coverage in both countries. In line…
Broadcasting Indigenous Voices
2008
Ethnic minority media embody much of the multiculturalist, multilingual and transnational changes in the media landscape and in the wider societal frame as well. Often minority media aim at providing relevant information, but also alternative publicity and empowering experiences in regard to their own identity, language and culture. Through an analysis of journalists' interviews and ethnographic data, this article examines how these tendencies, possibilities and limitations are played out in the indigenous Sami media. The findings suggest that the Sami journalists have managed to provide an alternative public space and contribute to linguistic revitalization. Yet, working within translocal …
Audiovisual Representation in Spanish and European Election Debates
2020
The presence of ever more conflicting stances between Europhiles and Eurosceptics has revealed some audiovisual discourses unknown until now. The fragmentation of inconclusive narrative discourse and staged situations with a clear intent to clash all make it necessary to analyse in detail the role given by the audiovisual media to the European process of democratisation. This study addresses the audiovisual discourse in Spanish public television (TVE) with the intention of discovering how the different topics addressed in debates are dealt with in audiovisual production, and whether those topics have benefited from certain decisions by the production team that are subjective a priori. Using…
Seasonal and daily variation in physical activity among three-year-old Finnish preschool children
2013
The purposes of this study were to assess seasonal, daily, and gender variations in children’s physical activity (PA). ActiGraph GT3X accelerometers were used to record the three-year-old children’s PA levels for five consecutive days in autumn and winter. Complete data for both seasons were obtained for 47 children. Despite a significant difference in seasonal temperatures (p < .001), differences were only found for weekdays light PA (p = .021). No difference in PA was observed between weekdays and weekend days. Only 20% of the sample had ≥120 minutes light-to-vigorous PA (LMVPA), and 46% of children had ≥60 minutes moderate-to-vigorous PA (MVPA). Boys spent more minutes in LMVPA (p = .001…
An efficient distributed algorithm for generating and updating multicast trees
2006
As group applications are becoming widespread, efficient network utilization becomes a growing concern. Multicast transmission represents a necessary lower network service for the wide diffusion of new multimedia network applications. Multicast transmission may use network resources more efficiently than multiple point-to-point messages; however, creating optimal multicast trees (Steiner Tree Problem in networks) is prohibitively expensive. This paper proposes a distributed algorithm for the heuristic solution of the Steiner Tree Problem, allowing the construction of effective distribution trees using a coordination protocol among the network nodes. Furthermore, we propose a novel distribut…