The diploma thesis The Evaluation of the effectiveness of the the wastewater treatment plant in Bílovice nad Svitavou compares effectivity of wastewater treatment technology before reconstruction and after it. Literature search is focused on waste water. In this chapter are also described drainage buildings their concept and meaning. Very important part of the thesis is overview of water legislation and sewage contamination indicators and sludge index. Results part of the thesis contains description of Bílovice nad Svitavou municipality. Next chapter is description of the wastewater treatment plant before and after the reconstruction. In this chapter you can find information about sludge index. The most important chapter is an evaluation of results which contains graphical explanation of the level of dirty water. The original wastewater treatment plant was quite advanced but the reconstruction was necessary due to increasing population. The capacity was increased up from 1 250 to 7 750 equivalent residents. Current technology is designed to comply with actual needs of the city and microregion and it is prepared for its future enlargement. The wastewater treatment plant fulfill requirements for minimal concentration levels of pollution in waste water on the outflow to the recipient and does not exceed emission standarts.

The objective of the Diploma Thesis, which is divided into two parts, is to summarize the issue of wastewater treatment for teaching purposes. In the theoretical part, it is possible to find interesting facts from the history, the beginnings of sewerage in the Czech, treatises on sewage, urban and industrial sewage. The thesis describes waste water, its composition and explains the concept of sewerage. The most extensive chapter is the section on sewage treatment plants. It deals with the type of sewage plants, cleaning processes and water and legislation. Readers will be informed about the drainage in Benesov and the sewage treatment in this city. An integral part is the issue of sewage treatment plants for family houses and root cleaner. The empirical part focuses of the questionnaire examines the relation of school facilities to sewage treatment and especially the use of worksheets. There is a work sheet for pupils II. grade or primary school or the relevant years grammar schools was check in primary school Benesov, Dukelska 1818. The practical part also includes a design of the excursion to the seweage treatment in Benesov. The aim of the thesis is to work on the issue of water purification, which could serve teachers as a guide to the teaching of pupils, they are able to answer the questions...

<p>IP-based TV (IPTV) is gradually replacing traditional means for broadcasting. At the same time, players from the telecom industry is seeking to create a new, standardized architectural framework for delivering all kinds of multimedia services over IP to end users; the IP Multimedia Subsystem (IMS).</p><p>This thesis is about video on demand, one of the more popular services enabled by IPTV. The thesis starts out by introducing the reader to IMS and IPTV and presents the current work in the area of IMS-based IPTV, done by the TISPAN committee of the ETSI.</p><p>The author then takes an explorative approach in investigating how a signaling schema for an IMS-based VOD service could look like, based on TISPAN’s existing work. The service is subject to an extra requirement; it should support session continuity, meaning it should be possible to resume the streaming of a video where the user left off, possibly on a different device. The investigation shows that it is possible to combine SIP and RTSP in several ways to get the desired behaviour.</p><p>The second part of the results consists of a proof of technology-implementation of the signaling schema that is the output from the first part. The implemented service runs on an IPTV set-top box on the client side, and a regular PC on the server side. The service uses open source software to a great extent and is fairly portable. A sample VOD session using the implemented system is presented along with full message contents.</p><p>The thesis concludes with a summary of the results and a discussion on what has been left out from the implementation and possibly subject to further studies. Finally, there is a brief summary on the recent developments within the field of IMS-based IPTV.</p>

IP-based TV (IPTV) is gradually replacing traditional means for broadcasting. At the same time, players from the telecom industry is seeking to create a new, standardized architectural framework for delivering all kinds of multimedia services over IP to end users; the IP Multimedia Subsystem (IMS). This thesis is about video on demand, one of the more popular services enabled by IPTV. The thesis starts out by introducing the reader to IMS and IPTV and presents the current work in the area of IMS-based IPTV, done by the TISPAN committee of the ETSI. The author then takes an explorative approach in investigating how a signaling schema for an IMS-based VOD service could look like, based on TISPAN’s existing work. The service is subject to an extra requirement; it should support session continuity, meaning it should be possible to resume the streaming of a video where the user left off, possibly on a different device. The investigation shows that it is possible to combine SIP and RTSP in several ways to get the desired behaviour. The second part of the results consists of a proof of technology-implementation of the signaling schema that is the output from the first part. The implemented service runs on an IPTV set-top box on the client side, and a regular PC on the server side. The service uses open source software to a great extent and is fairly portable. A sample VOD session using the implemented system is presented along with full message contents. The thesis concludes with a summary of the results and a discussion on what has been left out from the implementation and possibly subject to further studies. Finally, there is a brief summary on the recent developments within the field of IMS-based IPTV.

To provide interactive operations such as fast-forward, slow-forward, switch channel, and jump function for peer-to-peer on demand video streaming is a challenge. In this thesis, we proposed a vEB-tree (van Emde Boas tree) based architecture for interactive VoD services in peer-to-peer networks. The proposed architecture assumes videos can be divided into many segments, and these segments are stored in each peer. In the architecture, it includes vEB-tree based topology, procedure of demand segment search, and a distribution scheme. It not only efficiently provides interactive operations but also reduces the control messages. Additionally, each peer stores segments based on the proposed distribution scheme to reduce the server stress. Experimental results demonstrate that the proposed architecture outperforms Baton, BBTU, and VMesh in terms of jump latency, server stress, and neighbors¡¦ maintenance cost.

In recent years there has been a predominant increase in multimedia services such as live streaming, Video on Demand (VoD), video conferencing, videos for the learning. Streaming of high quality videos has become a challenge for service providers to enhance the user’s watching experience. The service providers cannot guarantee the perceived quality. In order to enhance the user’s expectations, it is also important to estimate the quality of video perceived by the user. There are different video streaming protocols that are used to stream from server to client. In this research, we aren’t focused on the user’s experience. We are mainly focused on the performance behavior of the protocols. In this study, we investigate the performance of the HTTP, RTSP and WebRTC protocols when streaming is carried out for H.265 encoder. The study addresses for the objective assessment of different protocols over VoD streaming at the network and application layers. Packet loss and delay variations are altered at the network layer using network emulator NetEm when streaming from server to client. The metrics at the network layer and application layer are collected and analyzed. The video is streamed from server to a client, the quality of the video is checked by some of the users. The research method has been carried out using an experimental testbed. The metrics such as packet counts at network layer and stream bitrate at application layer are collected for HTTP, RTSP and WebRTC protocols. Variable delays and packet losses are injected into the network to emulate real world. Based on the results obtained, it was found at the application layer that, out of the three protocols, HTTP, RTSP and WebRTC, the stream bitrate of the video transmitted using HTTP was less when compared to the other. Hence, HTTP performs better in the application layer. At the network layer, the packet counts of the video transmitted were collected using TCP port for HTTP and UDP port for RTSP and WebRTC protocols. The performance of HTTP was found to be stable in most of the scenarios. On comparing RTSP and WebRTC, the number of packet counts collected were more in number for RTSP when compared to WebRTC. This is because, the protocol and also the streamer are using more resources to transmit the video. Hence, both the protocols RTSP and WebRTC are performing better relatively.

Purpose: The purpose of the study is to gain a deeper understanding of influencing behaviours concerning individualized viewing in relation to VoD-services (Video on Demand), and how this reflects the perceived viewing behaviour in terms of habits, content and social actions. Theory: The theory that primarily underpins this study is Jacob Bjur’s thesis Transforming Audiences. Bjur’s thesis provides an analytical model of individualized viewing behaviour that has been used in this study case. The model is founded on three central tenet areas of individualization, Habitualness that ensures habits, Socialness that refers to the social space and Referential space that ensures content/selection and viewership as a referential act. Method/Material: The study is based on a qualitative research method underpinned by focus groups interviews. Results: The research demonstrates strong tendencies towards an individualised viewing behaviour in the use of VoD-services. The study participants in the study feel that the habits they practice have become more individualised because of the constant availability and the wide range of selection that VoD enables. Users of VoD tend to divide their time watching, and select content differently than their family and friends. Since the individuals who participated in the case study feel that they follow their own habits, which often are irregular and have their own content preferences, they watch their own selected content alone.

En la actualidad, el creciente interés por las nuevas tecnologías relacionadas con la televisión ha dado pie a numerosos estudios, por un lado se encuentran las industrias que han mejorado la calidad de la imagen, por otro lado en todos los continentes se están implementando nuevos estándares de televisión. Estos avances vienen acompañados del crecimiento que ha mostrado Internet en los últimos años, primero por su versatilidad y segundo por su rapidez. Los avances que ha tenido Internet, tanto en sistemas operativos como en infraestructura, más el constante progreso de nuevas herramientas computacionales, ha ampliado la gama de servicios brindados por las telecomunicaciones, que es precisamente donde se establece el tema de esta memoria, la cual desarrolla una plataforma donde convergen estas mejoras. Considerando el gran interés del mercado por la televisión, se evalúa positivamente el diseño e implementación de una plataforma de servicios IP/TV enfocado en un grabador personal de video a través de una red IP local, con el mismo fundamento de MythTV y similar al sistema TiVo comercializado en USA, pero con la ventaja de no requerir costos operacionales por licencias de Softwares ni por costos de soporte de parte de las empresas. El trabajo realizado se llevó a cabo con herramientas computacionales Open Source, las que permiten su uso gratuitamente con soporte brindado por las comunidades que las desarrollan. Así, se efectuó la implementación de una plataforma de streaming de video a través del protocolo Internet con servicios como solicitar videos, transmitir televisión en directo y programar grabaciones de emisiones televisivas. Una aplicación de este tipo es una motivación para el cliente, dado que permite no perder programas que se transmitan en horarios inaccesibles. La metodología seguida consiste en implementar las distintas etapas que permiten alcanzar el diseño propuesto, esto a través de la selección, utilización y combinación de las herramientas que entreguen a la plataforma las características deseadas. Además, incluye una guía para recrearla de modo que pueda ser utilizada con fines docentes en laboratorios de pregrado. También se puede utilizar en futuros trabajos de memoria o tesis integrándose en otras soluciones de Streaming que la hagan converger con más servicios en una sola plataforma, estos contenidos y proyecciones otorgan a esta memoria un considerable valor docente.

Rate of pollution degradation in stream depends on its self-purification ability. Intensity of self-purification capacity differs by various streams and except other factors it is notable affected by the character of the watercourse. Due to rugged watercourse, longer detention time and more favorable conditions for resurgence the self-purification capability of restored streams is supposed to be higher than the self-purification capability of technically modified streams. In this thesis the change of water quality indicators in technically modified (923 m) and restored (264 m) reach of Haraska river (South Moravia, the Czech Republic) was investigated. Using QUAL2K software (USEPA, 2008) the water quality model was created. Comparison of changes of water quality indicator values between technically modified and restored reach was also performed (Mann-Whitney-Wilcoxon test, a = 0,05), whereas statistically significant differences were observed only in inorganic and total phosphorus concentration.

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