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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.
1

Návrh marketingového mixu společnosti / The Marketing Mix Proposal in the Comapany

Hostinová, Zuzana January 2013 (has links)
The thesis should serve as a basis for strengthening the marketing mix Molpir, which became the European representative of MSI corporations and acts as an innovator, integrator and distributor of FUNTORO multimedia systems for buses, trains, ships and other mobile vehicles. The company proposes to improve the product, focusing on the user. I hope that my ideas and insights will help the company in its subsequent success in the market and increase the marketability of multimedia system in the European market.
2

Návrh marketingového mixu společnosti / The Marketing Mix Proposal in the Comapany

Hostinová, Zuzana January 2013 (has links)
The thesis should serve as a basis for strengthening the marketing mix Molpir, which became the European representative of MSI corporations and acts as an innovator, integrator and distributor of multimedia systems for buses, trains, ships and other mobile vehicles. The company proposes to improve the product, focusing on the user. I hope that my ideas and insights will help the company in its subsequent success in the market and increase the marketability of multimedia devices in the European market.
3

Estratégia para armazenamento e recuperação de experiência multimídia em telemedicina: um estudo de caso no Projeto Ambiente de Vídeo Colaboração em Saúde (GTAVCS) .

Braga Junior, Wolgrand Cardoso 07 May 2013 (has links)
Made available in DSpace on 2015-05-14T12:36:36Z (GMT). No. of bitstreams: 1 ArquivototalWolgrand.pdf: 4230827 bytes, checksum: 441ef5a8a5b7d797a80650ca78d388ee (MD5) Previous issue date: 2013-05-07 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Applications with multimedia content are becoming more popular, especially interactive and real-time applications. Among these applications stands multimedia systems for telemedicine that allows users to share information as surgical medical videos and patient data. This paper presents an approach to capture, represent and retrieve multimedia experiences in telemedicine. Therefore, a strategy that describes ways to store data, a notation for describing the multimedia experience and features that allow the retrieval and display of the experiences recorded was drafted. Furthermore, a service based on this strategy was implemented in the context of the Environment Video Collaboration in Health project (GTAVCS) and the Arthron tool. The Arthron tool allows management and distribution of media streams in real time and its main application is telemedicine allowing the transmission of live surgeries. The user experience when streaming live surgery involves multiple streams, their alternations, additional flows (such as exams or medical imaging), featuring a complex multimedia experience. The strategy presented in this paper is applied to precisely reproduce that experience, enabling their retrieval and viewing on demand. To validate the strategy, tests were conducted using the recording and retrieval service implementation for Arthron constructed to compare the users' perception about the experience in real time and experience reproduced by the tool. / Aplicações baseadas em vídeo estão cada vez mais populares. Elas estão disseminadas nos mais diversos campos: Telemedicina, espetáculos artístico-tecnológicos, eventos tecno-científicos, entretenimento, publicidade, dentre outros. Para algumas dessas aplicações a incorporação de ferramentas que permitam a gravação de fluxos de dados audiovisuais transmitidos em tempo real é de grande valia. O presente trabalho aborda o que chamamos de experiência multimídia que designa a recuperação da experiência de uso de um sistema voltado para Telemedicina que permite o controle de vários fluxos de dados simultâneos. Neste trabalho foi criada uma estratégia para gravação e recuperação dessa experiência.
4

Uma arquitetura para análise de fluxo de dados estruturados aplicada ao sistema brasileiro de TV digital. / An architecture of structured data stream analysis applied to the Brazilian digital TV system.

Villa Real, Lucas Correia 27 July 2009 (has links)
Diversos sistemas computacionais transmitem informação em fluxos contínuos de dados estruturados e, por vezes, hierarquizados. Este modelo de transmissão de dados tem como uma de suas características a grande densidade de informação, o que exige de um receptor o tratamento imediato das unidades extraídas deste canal de comunicação. Muitas vezes o volume de transmissão não permite, também, que a informação recebida seja armazenada permanentemente no receptor, o que torna a análise do conteúdo desses fluxos de dados um desafio. Este trabalho apresenta uma arquitetura para a análise de fluxo de dados estruturados aplicado à hierarquia lógica definida pelo Sistema Brasileiro de TV Digital para a transmissão de programas de televisão, validada por meio de uma implementação de referência completamente funcional. / Various computing systems transfer data in structured data streams which also happen to be, sometimes, hierarchically organized. Such data stream model is characterized by the dense amount of information transmitted, which requires the receiver to immediately manipulate the elements extracted from that communication channel. The high rate in which data flows also makes it hard, if not impossible, for the receiver to store the desired information in its memory, which makes data flow analysis especially challenging. This work presents a novel structured data flow analysis architecture applied to the logical hierarchy defined by the Brazilian Digital TV System for the transmission of television programs, validated by means of a fully functional reference implementation.
5

Uma arquitetura para análise de fluxo de dados estruturados aplicada ao sistema brasileiro de TV digital. / An architecture of structured data stream analysis applied to the Brazilian digital TV system.

Lucas Correia Villa Real 27 July 2009 (has links)
Diversos sistemas computacionais transmitem informação em fluxos contínuos de dados estruturados e, por vezes, hierarquizados. Este modelo de transmissão de dados tem como uma de suas características a grande densidade de informação, o que exige de um receptor o tratamento imediato das unidades extraídas deste canal de comunicação. Muitas vezes o volume de transmissão não permite, também, que a informação recebida seja armazenada permanentemente no receptor, o que torna a análise do conteúdo desses fluxos de dados um desafio. Este trabalho apresenta uma arquitetura para a análise de fluxo de dados estruturados aplicado à hierarquia lógica definida pelo Sistema Brasileiro de TV Digital para a transmissão de programas de televisão, validada por meio de uma implementação de referência completamente funcional. / Various computing systems transfer data in structured data streams which also happen to be, sometimes, hierarchically organized. Such data stream model is characterized by the dense amount of information transmitted, which requires the receiver to immediately manipulate the elements extracted from that communication channel. The high rate in which data flows also makes it hard, if not impossible, for the receiver to store the desired information in its memory, which makes data flow analysis especially challenging. This work presents a novel structured data flow analysis architecture applied to the logical hierarchy defined by the Brazilian Digital TV System for the transmission of television programs, validated by means of a fully functional reference implementation.
6

Smart Client-Server Protocol and Architecture for Adaptive Multimedia Streaming

Abdullah, Miran Taha 04 June 2018 (has links)
En los últimos años, el consumo de servicios multimedia ha aumentado y se prevé que esta tendencia continúe en un futuro próximo, convirtiendo el tema de la evaluación de la Calidad de la Experiencia (QoE) en un tema muy importante para valorar el servicio de los proveedores. En este sentido, la optimización de la QoE recibe cada vez más atención ya que las soluciones actuales no han tenido en cuenta, la adaptación, la viabilidad, la rentabi-lidad y la fiabilidad. La presente memoria se centra en la caracterización, diseño, desarrollo y evaluación de diferentes aplicaciones multimedia, con el fin de optimizar la QoE. Por tanto, este trabajo investiga la influencia que la infraestructura de redes, las características de los videos y los terminales de los usuarios, presentan en la QoE de los servicios multimedia actuales en Internet. Esta tesis se basa en la investigación exhaustiva de la evaluación subjetiva y objetiva de QoE en redes heterogéneas. Los desafíos y cuestiones relacionados con el estado de la técnica y se discuten en esta disertación. En la primera fase, diseñamos una metodología de prueba para evaluar la QoE en la transmisión de video en directo y a través de plataformas de video bajo demanda en redes Wi-Fi y celulares. A partir de esta fase inicial, propondremos los problemas a investigar y las preguntas para resolver a lo largo de esta disertación. Nuestra metodología hace uso de métricas subjetivas y objetivas para evaluar la QoE percibida por los usuarios finales. Se realiza un conjunto de experimentos en laboratorio donde nuestra metodología de pruebas es aplicada. Los resultados obtenidos se recopilan y analizan para extraer las relaciones entre la Calidad de servicio (QoS) y QoE. A partir de estos resultados, se propone un mapeo de QoS-QoE que permite predecir la QoE. En la siguiente fase de la investigación, desarrollamos los algoritmos de optimización de QoE basados en la administración del sistema de red para redes Wi-Fi y celulares. Los algoritmos usan los parámetros clave que se tuvieron en cuenta para la evaluación de QoE. El objetivo de estos algorit-mos es proporcionar un sistema de gestión flexible para las redes con el ob-jetivo de lograr un equilibrio controlado entre la maximización de QoE y la eficiencia del uso de los recursos. Por último, se diseña el banco de pruebas del sistema para evaluar el rendimiento de las aplicaciones de servicios multimedia genéricos en los diferentes entornos de prueba. El banco de pruebas del sistema se basa en el enfoque de virtualización; usa los recursos compartidos de un hardware fí-sico para virtualizar todos los componentes. El banco de pruebas virtualiza-do proporciona funciones de red virtualizadas para diferentes escenarios, como Internet (las redes de distribución de contenido - CDNs) y redes inalámbricas. Por lo tanto, se adoptan protocolos livianos y mecanismos ágiles en el sistema, para proporcionar un mejor servicio a los usuarios fina-les. Los resultados de QoE son proporcionados a los proveedores de servi-cios de acuerdo con los parámetros que se definen en el proceso de la eva-luación. Como resultado hemos obtenido un sistema que presenta un servi-cio rentable como una forma factible para la evaluación de la prueba. / In recent years, multimedia services consumption has increased and it is expected that this trend will continue in the near future, becoming the evaluation of Quality of Experience (QoE) as a very important issue for assessing the quality of providers' services. In this sense, the optimization of the QoE is progressively receiving much attention considering that current solutions are not based on the adaptation, feasibility, cost-effectiveness, and reliability. The present dissertation is focused on the characterization, design, development and evaluation of different multimedia applications aimed to optimize the QoE. Therefore, this work investigates the influence that the networks infrastructure, the videos' characteristics and the users' terminals present on QoE of the current Internet multimedia services. The work is based on a comprehensive research of subjective and objective assessments in heterogeneous networks. Challenges and research questions related to the state of the art are discussed in this dissertation. In the first phase of this dissertation, we design a test methodology for assessing QoE of live video streaming and video on demand platforms to be transmitted over Wi-Fi and cellular networks. From this initial step, we will propound the related research issues and questions to solve this dissertation. Our methodology considers the use of subjective and objective metrics to evaluate the QoE perceived by end-users. A set of laboratory experiments is conducted where our proposed methodology is applied. The obtained results are gathered and analyzed to extract the relations between Quality of Service (QoS) and QoE. From the results, we propose a QoS-QoE mapping which allows predicting QoE. In the next phase of the research, we develop QoE-optimization algorithms based on network system management for Wi-Fi and cellular networks. The algorithms use the key parameters that were taken into account for QoE assessment. The goal of these algorithms is to provide a flexible management system for the networks in order to achieve the desirable trade-off between QoE maximization and resource usage efficiency. Lastly, the system testbed is designed in order to evaluate the performance of generic multimedia services applications for the different environments under test. The system testbed is based on virtualization approach; it uses the shared resources of a physical hardware to virtualize all components. The virtualized testbed provides virtualized network functions for the different scenarios such as the Internet (Content Delivery Networks - CDNs) and wireless networks. Therefore, lightweight protocols and agile mechanisms are adopted in the system to provide enhanced service to end-users. The QoE results are reported to the service providers according to the parameters defined in the evaluation process. As a result, we have obtained a cost-effective system, which is considered as a feasible way for test evaluation. / En els últims anys, el consum de serveis multimèdia ha augmentat i es preveu que aquesta tendència continue en un futur pròxim, convertitnt el tema de l'avaluació de la Qualitat d'Experiència (QoE) una tasca molt im-portant per a valorar el servei dels proveïdors. En aquest sentit, l'optimització de la QoE rep cada vegada més atenció degut a que les solucions actuals no tenen en compte, l'adaptació, la viabilitat, el rendiment i la fiabilitat. La present memòria se centra en la caracterització, disseny, desenvolupament i avaluació de diferents aplicacions multimèdia, amb la finalitat d'optimitzar la QoE. Per tant, aquest treball investiga la influència que la infraestructura de les xarxes, les característiques dels videos i els terminals dels usuaris tenen sobre la QoE dels serveis multimèdia actuals d'Iinternet. Aquesta tesi es basa en una recerca exhaustiva de l'avaluació subjectiva i objectiva de QoE en xarxes heterogènies. Els desafiaments i preguntes relacionats amb l'estat de la tècnica es discuteixen en aquesta dissertació. En la primera fase, dissenyem la metodologia de prova per a avaluar la QoE de transmissió de video en directe i de plataformes de video baix demanda en xarxes Wi-Fi i cel·lulars. A partir d'aquest primer pas, proposem els problemes de recerca relacionats i les preguntes a resoldre a través d'a-questa tesi. La nostra metodologia fa ús de mètriques subjectives i objecti-ves per a avaluar la QoE dels usuaris finals. Es realitzen un conjunt d'expe-riments en laboratori on s'aplica la nostra metodología. Els resultats obtin-guts es recopilen i analitzen per a extraure les relacions entre la QoS i la QoE. A partir d'aquests resultats, esproposa un mapatge de QoS-QoE que ens permetrà predir la QoE. En la següent fase de la recerca, desenvolupem els algoritmes d'optimi-tzació de la QoE per a l'administració de xarxes Wi-Fi i cel·lulars. Els algo-ritmes utilitzen els paràmetres clau que es van tenir en compte per a l'ava-luació de QoE. L'objectiu d'aquests algoritmes és proporcionar un sistema de gestió flexible per ales xarxes que permetrá aconseguir un equilibri con-trolat entre la maximització de la QoE i l'us eficient dels recursos. Finalment, el banc de proves del sistema està dissenyat per a avaluar el rendiment de les aplicacions de serveis multimèdia genèrics en els diferents entorns de prova. El banc de proves del sistema es basa en l'enfocament de virtualització; usa els recursos compartits d'un equip físic que virtualitza tots els components. El banc de proves virtualitzat proporciona les funcions de xarxa virtualitzades per a diferents escenaris, com Internet (les xarxes de distribució de continguts - CDNs) i xarxes sense fils. Per tant, s'adopten protocols lleugers i mecanismes àgils en el sistema per a proporcionar un millor servei als usuaris finals. Els resultats de QoE son proporcionats als proveïdors de serveis d'acord amb els paràmetres que es defineixen en el procés de l'avaluació. Com a resultat, hem obtés un sistema que presenta un servei rendible i com a viable per a l'avaluació de la prova. / Abdullah, MT. (2018). Smart Client-Server Protocol and Architecture for Adaptive Multimedia Streaming [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/103324 / TESIS
7

Design výukové konzole / Design of education board

Hadáček, Milan January 2008 (has links)
The aim of my diploma thesis is to blueprint a design of multi-functional educational console. The dissertation contains several variant studies, color drawings and concrete shape execution. It entails a certain development in the area of positioning and multi-functional appliances. The thesis itself deals with the concrete shape execution of multi-touch educational console as well as seat in the form of gym ball. Short video cut from the area of interactive media forms a part of my work too.

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