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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
401

A realistic named data networking architecture for the Internet of things / Une Architecture NDN realiste pour l'Internet des Objets

Abane, Amar 02 December 2019 (has links)
L’Internet des objets (IdO) utilise l’interconnexion de milliards de petits appareils informatiques, appelés «Objets», pour fournir un accès à des services et à des informations partout dans le monde. Cependant, la suite de protocoles IP a été conçue il y a plusieurs décennies dans un but totalement différent, et les fonctionnalités de l’IoT soulignent désormais les limites de l’IP. En parallèle aux efforts d’adaptation de l’IP à l’IdO, des architectures alternatives basées sur les réseaux orientés information promettent de satisfaire nativement les applications Internet émergentes. L’une de ces architectures est appelée réseau de données nommées (NDN). Nos objectifs à travers le travail rapporté dans ce manuscrit peuvent êtrerésumés en deux aspects. Le premier objectif est de montrer que NDN est adapté à la prise en charge des systèmes IdO. Le deuxième objectif est la conception de deux solutions de communication légères pour les réseaux sans fil contraints avec NDN. / The Internet of Things (IoT) uses the interconnection of billions of small computing devices, called “Things”, to provide access to services and information all over the world. However, the IP protocol suite has been designed decades ago for a completely different purpose, and IoT features now highlight the limitations of IP. While adapting IP for the IoT might be seen as cutting corners, alternative architectures based on the Information Centric Networking (ICN) paradigm promise to natively satisfy emerging Internet applications. One of these architectures is Named Data Networking (NDN). Our objectives through the work reported in this manuscript can be summarized in two aspects. The first objective is to show that NDN is suitable to support IoT networking. The second objective is the design of two solutions for lightweight forwarding in constrained wireless networks.
402

Escuela y Centro de difusión de danzas folklóricas en Villa el Salvador / School and Center for the diffusion of folk dances in Villa el Salvador

Roldan Castillo, Yanira Fernanda 27 January 2021 (has links)
Este proyecto consiste en el diseño de una Escuela y Centro de difusión de danzas folklóricas ubicada en Villa el Salvador, enfocada directamente a la población de Lima Sur. La ubicación del proyecto responde a las necesidades del distrito el cual desempeña ampliamente las danzas folklóricas como medio de actividad comunitario, actualmente se carece de una infaestructura adecuada para la enseñanza de dicha actividad, las escuelas de folklore del país son infraestructuras adaptadas y no propiamente diseñadas para dicha actividad. Se busca un diseño arquitectónico que permita articular espacios con el contexto urbano y la interacción de la escuela con la comunidad mediante los espacios públicos. Se rechaza la idea de monumentalidad sino de integridad, la idea no es diseñar un elemento ajeno al entorno sino se busca la integración y participación de la comunidad siendo la danza folklórica, icono de la cultura, un medio unificador de este. / This project consists in the design of a school and center for the diffusion of folk dances located in Villa El Salvador, focused directly on the population of South Lima. The location of the project responds to the needs the district performs the functions Folkloric activities as a means of community activity, currently lacks an adequate infrastructure for the teaching of this activity, the folklore schools of the country are adapted and not properly said. for this activity. An architectural design that allows for articulated spaces with the urban context and the interaction of the school with the community through public spaces is sought. The idea of ​​monumentality is rejected, but integrity, the idea is folk dance, the icon of culture, a unifying means of this. / Tesis
403

Typologie pořadu a programová struktura kontinuálního vysílání ČT24 / Typology of series and programming structure of continuous broadcasting CT24

Klepáčová, Sára January 2019 (has links)
Typologie pořadu a programová struktura kontinuálního vysílání ČT24 Sára Klepáčová Annotation The aim of this thesis is to define and analyze one of the TV shows of the ČT24 news station - Studio ČT24. It is a specific type of continuous broadcast delivered by ČT24 to the viewers, as the only one in Czech republic, every day - seven days a week. In its way it is also unique among the TV shows of european public service media. Theoretical part deals with standart procedures in news broadcasting, starting with acquiring the information and its incorporation into the broadcasting script. This part contains factual notes provided by the ČT 24 news broadcast deputy editor-in-chief František Lutonský. Research aims on the structure of the show itself, particularly on the content, by means of the quantitative content analysis. It demonstrates the structure and composition of the continuous broadcast of the ČT24 news station on the sample of four whole weeks choosed from four programme periods. It also aims on the changes of broadcast composition in case of extraordinary event. in context of the viewership.
404

Novel Techniques to Improve Restoration of Native Rangeland Species

Anderson, Rhett Michael 27 March 2020 (has links)
The sagebrush steppe is a particularly sensitive ecosystem that is easily disturbed by fires, oil and gas extraction, woody-plant encroachment, and overgrazing. The natural regeneration of native species following a disturbance within this system is typically slow and sporadic, which allows invasive grasses to occupy the landscape. Attempts to assist the recovery of these landscapes through direct seeding is commonly met with poor success rates, particularly in lower elevation, drier sites. Novel seed enhancement technologies and planting techniques that mitigate limiting factors impairing restoration efforts may improve the likelihood of restoring these degraded areas. For chapter 1, we evaluated a solid-matrix priming technique, where bluebunch wheatgrass (Pseudoroegneria spicata) and Lewis flax (Linum lewisii) were primed and then the priming matrix and seed were pelleted together. We evaluated primed seed that had been incorporated into pellets at two field sites against seed that was pelleted but been left unprimed, and untreated seed (control). These three seed treatments were planted in the spring (mid-march) in shallow (2-cm) and deep (15-cm) furrows, in a complete factorial design. We found that primed seeds generally produced higher plant densities than control seed at the beginning of the growing season; however, its influence diminished towards the end of the growing season. We also found that deep furrows increased plant density throughout the growing season and even into the following year. The combination of priming and deep furrows outperformed control seed in shallow furrows in all measured metrics. For chapter 2, we evaluated a seed conglomeration technique for improving Wyoming big sagebrush (Artemisia tridentata ssp. Wyomingensis) emergence and survival under fall and winter plantings. The trial was implemented at five sites across Utah and Nevada in a randomized complete block-split-split plot design, with site, and planting season, comprising the split-plot factors. Each site and season combination was seeded with conglomerated and control seed. We found that in most cases, a fall seeding of Wyoming big sagebrush was either the same or more successful compared to planting on the snow in the winter, which is the current suggested practice. Our results also demonstrated that seed conglomeration produced higher plant densities compared to control seed throughout the growing season. The higher density of plants produced from conglomerates combined with the improved seed delivery provided by the conglomeration technique was estimated to offset the cost in producing conglomerates and reduce overall restoration costs by 41%.
405

Public Service – at your service? : A study of attitudes toward the public service broadcasting company SVT

Mikkelsen Båge, Else January 2022 (has links)
Public service broadcasting is a longstanding broadcasting institution in Sweden. Being the most consumed and highly trusted media broadcasting institution on the market, it suffers both challenges and acclaim. It has become a highly politized matter. For the first time since its founding, trust and attitudes towards the public service broadcasting companies are starting to slowly dwindle and are being questioned. Representatives from parliament parties are calling for abolishment and restructuring, and the consumers are abandoning the public service broadcasting channels for commercial competitors. This is especially noticeable amongst youth. The aim of the study is to identify and analyse what factors can be relevant for understanding attitudes towards public service broadcasting. With a theoretical background in Markus Prior’s post-broadcast democracy, James G. Webster and Thomas B. Ksiazek’s audience fragmentation theory, and Strömbäck’s definition of media trust, a theoretical framework regarding consumption and factors concerning attitudes was constructed. Through this, the value of a public service broadcasting system could be charted, and consumer attitudes be understood.   The study consists of data from a nationwide survey. The data was analysed with binary logistic regression analysis, performed on two samples, one representing the Swedish population at large, and one representing youth. This to observe whether or not there were any differences between what factors constitute trust and positive attitudes towards public service broadcasting. Main findings include that youth is much less politically polarised than the population at large. Factors such as education, gender, and regularly consuming public service broadcasting content were also shown to be significant for attitude formation. From this, I could derive that the Swedish population, despite increased polarisation, still has very high levels of trust in, and positive sentiments towards the public service broadcasting company SVT.
406

Televizní zpravodajství o koronavirové epidemii 2020 jako možný svět / Broadcast coverage of the coronavirus epidemic 2020 as a possible world

Bergerová, Michaela January 2021 (has links)
This diploma thesis explores the theory of possible worlds and its relation to broadcast during the coronavirus pandemic. It perceives news, especially broadcast, as a possible world. Using narrative analysis, this thesis describes the characteristics of two possible worlds that arose during the first wave of the coronavirus pandemic on Czech Television and television Prima. The main goal of this research is to examine what kind of possible worlds have these two TV stations constructed in their main news programs and to point out how these two possible worlds differed. My diploma thesis should primarily contribute to a clear comparison of how the depiction of the coronavirus pandemic differed by individual television channels in the first half of 2020.
407

Centro de difusión de Cultura Viva Comunitaria

Ramírez Fajardo, Leslie Zulay 22 January 2022 (has links)
El Centro de Difusión de Cultura Viva Comunitaria es un proyecto ubicado en Lima-Perú, en el distrito de Villa el Salvador. Se trata de un equipamiento cultural-comunitario encargado de identificar, promover y difundir la cultura existente de su pueblo según su historia, costumbres y tradiciones. Tiene como función principal impartir la enseñanza de actividades artísticas, culturales y laborales, satisfaciendo la demanda existente del distrito por medio de una infraestructura y espacialidad adecuada. Alberga actividades y espacios que permiten el desarrollo personal y social de cada poblador, tales como: danza, música, teatro, psicología, carpintería, costura, biblioteca, comedor, áreas de encuentro colectivo, etc. Asimismo, se brinda a la zona aportes a nivel cultural, urbano y económico. Los cuales, se complementan para desarrollar un punto de participación social, cuyo fin es ayudar a que la comunidad se integre, mejoren sus condiciones de vida y logren identificarse con su cultura, el proyecto y el lugar. / Center for the diffusion of Cultura Viva Comunitaria is a project located in Lima-Peru, in the district of Villa el Salvador. It is a cultural-community facility responsible for identifying, promoting and disseminating the existing culture of its people according to their history, customs and traditions. Its main function is to teach artistic, cultural and labor activities, satisfying the existing demand of the district through adequate infrastructure and space. It houses activities and spaces that allow for the personal and social development of each inhabitant, such as: dance, music, theater, psychology, carpentry, sewing, library, dining room, collective meeting areas, etc. Likewise, the area is provided with cultural, urban and economic contributions. These are complemented to develop a point of social participation whose purpose is to help the community integrate, improve their living conditions and identify with their culture, the project and the place. / Tesis
408

Radiodiffusion avec CSIT retardée : analyse de SNR fini et voie de retour hétérogène / Broadcasting with delayed CSIT : finite SNR analysis and heterogeneous feedback

He, Chao 02 December 2016 (has links)
Cette thèse explore, sous certains paramètres réalistes, l’une des techniques clés pour les réseaux sans fil de demain, i.e., la réduction des interférences permis par la voie de retour (feedback). Nous nous concentrons sur la voie de retour du type d’état, également connu sous le nom de CSIT retardé, qui aide les récepteurs à profiter des observations indésirables par créer des dimensions de signaux supplémentaires. Afin de vérifier l’utilité de la CSIT retardé dans des situations sévères, nous l’étudions avec SNR fini et / ou avec la hétérogénéité de la voie de retour dans une configuration de communication de diffusion, qui est largement utilisé pour modéliser la transmission de liaison descendante dans les systèmes cellulaires. Tout au long de la thèse, nous utilisons des outils de théorie information, par exemple, le codage lossy distribué, bloc Markov codage, la technique de compression (Wyner-Ziv), etc.Dans la première partie de cette thèse, nous sommes surtout intéressés par la performance de CSIT retardée avec SNR fini et l’uniformité à travers les résultats dans le canal Gaussien et dans le canal d’effacement. Plusieurs schémas relativement simples sont proposés pour des canaux de diffusion multiutilisateur (sans mémoire) dans le cas où les états sont supposés être entièrement connus à la destination, mais causalement à l’émetteur. Lors de l’analyse des régions correspondantes les cas Gaussien/ d’effacement, nous avons caractérisé des améliorations en termes de débits symétriques plus élevés et plus d’options de l’alphabet d’entré.Dans la deuxième partie de cette thèse, les algorithmes adaptés aux hétérogénéités différentes de la voie de retour sont ciblés, c’est-à-dire, seulement une partie des nœuds de communication sont impliqués dans le processus de feedback. En particulier, nous nous concentrons sur le canal de 1) diffusion supporté par les voies de retour des récepteurs partiels, 2) diffusion avec relais et voie de retour au relais. Étant donné que (tous /partiel) états retardés sont accessibles à des émetteurs (tous/partiels), les approches proposées, bien qu’ils emploient les méthodes de codages visant à réduire les interférences à tous les récepteurs, doivent soit donner la priorité aux utilisateurs qui fournissent les états et compter sur un gain de codage opportuniste pour les autres, soit forcer chaque source à prendre la responsabilité partielle de transmission. Les améliorations sur les débits réalisables sont justifiées dans des cas avec analyse et quelques exemples. Les résultats et les évaluations de cette thèse, qui donnent quelques indications sur comment le retour d’état peut être exploité dans la transmission de liaison descendante, montrent qu’une bonne performance de débit pourrait être atteinte avec le CSIT retardé même lorsque la puissance de transmission est limitée et lorsque le retour d’état est disponible de façon hétérogène. / This dissertation explores one of the key techniques for future wireless networks, namely feedback enabled interference mitigation, under some realistic settings. We focus on the state-type feedback, also known as delayed CSIT, which helps leverage receivers’ overheard observations to create extra signal dimensions. In order to verify the usefulness of delayed CSIT in harsh situations, we investigate it with finite SNR and/or feedback heterogeneity in a broadcast communication setup, which is widely utilized to model downlink transmission in cellular systems. Throughout the thesis, we use some information theoretical tools, e.g., distributed lossy source coding, block Markov coding, Wyner-Ziv compression technique, e.t.c.In the first part of this dissertation, we are mainly interested in the finite SNR performance of delayed CSIT and the uniformity across the results in the Gaussian broadcast channel and in the erasure channel. Several relatively simple schemes are proposed in multi-user memoryless broadcast channels when states are assumed to be fully known at the destinations but only strictly causally at the transmitter. Enhancements in terms of higher symmetric rates and more input alphabet options are then characterized when analyzing the corresponding regions in Gaussian/erasure cases.In the second part of this dissertation, algorithms adapted to distinct feedback heterogeneities are targeted as only part of the communication nodes are involved in the feedback process. In particular, we concentrate on 1) broadcast channel with feedback from part of all receivers; and 2) broadcast relay channel with feedback at the relay. Given that (partial) delayed states are accessible at (partial) transmitters, the proposed approaches, though employ coding methods aiming at mitigating interference at all receivers, have to either give priority to the users who feedback and rely on opportunistic coding gain for the others or force each source to take limited responsibility in the transmission. Improvements on achievable rates are justified in either cases with analysis and some examples.The results and their evaluations in this thesis, which give some insights on how to exploit the state feedback in downlink transmission, show that good rate performance can be achieved with delayed CSIT even when transmission power is limited and when the state feedback is heterogeneous.
409

Are We Cool Yet?: A Longitudinal Content Analysis of Nerd and Geek Representations in Popular Television

Cardiel, Christopher Louis 01 January 2012 (has links)
This study explores the representation of nerds and geeks in popular broadcast television programs over the course of the past twenty years. A content analysis of the five most popular scripted broadcast television programs for each year was conducted in order to assess the frequency of nerd characters, as well as the social competence, physical attractiveness, and demographic information of each such character. In addition, a supplemental survey design study was employed in order to collect public opinion data regarding perceptions of nerds in general and on television. The results of these studies indicated that while the per-year frequency of nerd portrayals has not varied significantly, nerds have been consistently portrayed as overwhelmingly white and male. Nerd characters in popular television programs have grown more physically attractive over the past twenty years. Furthermore, while technological or computer-related expertise remain significant predictors for the identification of television characters as nerds by audience members, the same is true for unattractiveness and low social competence. Considered through the theoretical framework provided by past mass media scholars, these findings suggest that nerds represent a group of individuals consistently portrayed as possessing technical aptitudes which are highly desirable in the current social context, but that such roles are portrayed as accessible only to white males.
410

Television Viewing and Latino Stereotypes

Rivera, Gustavo 01 January 2021 (has links)
Over the course of a modern lifetime, television viewing accounts for a significant amount of information taken in by viewers. Within that consumption lies a potential problem. Viewers may learn erroneous messages about people and the world. Since television has characterized Latinos in ways that have emphasized cultural stereotypes, viewers may learn to perceive them in a corresponding manner. A questionnaire was administered to a sample of 403 students from five universities and two community colleges located in Northern California. The respondents completed a seventy-one item questionnaire. Five key variables were utilized to measure relationships between them. The key variables included: learning about Latinos from television, positive perceptions of Latinos, negative Latino stereotypes, willingness to communicate with Latinos, and self-esteem. Frequency, correlation, and regression analyses indicated that there was significant interplay between the key variables. The results revealed an association between learning about Latinos from television and negative Latino stereotypes. Similarly, lower willingness to communicate with Latinos was associated with negative Latino stereotypes. However, higher willingness to communicate with Latinos was associated with positive perceptions of Latinos. Likewise, willingness to communicate with Latinos was positively associated with self-esteem. A multiple regression analysis indicated that learning about Latinos from television and lower willingness to communicate with Latinos were predictors of negative Latino stereotypes. Conversely, a second regression analysis indicated that higher willingness to communicate with Latinos and positive interaction with Latinos were predictors of positive perceptions of Latinos.

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