|
|
Development of IP Multimedia Subsystem architecture
Hladíková, Vladimíra ; Číka, Petr (referee) ; Novotný, Vít (advisor)
Bachelor thesis topic is focused on convergence of networks and services in the environment of mobile networks with implementation of Internet Protocol Multimedia Subsystem (IMS). The first part is, devoted to reasons of design of new system, such as IMS (Internet Protocol Multimedia Subsystem) and which possibilities this architecture brings to users. I mentioned institutions and organizations, which are involved in the development of this system. In this chapter is shortly defined history of single standardised parts. In the next part is defined the IMS architecture its main part and functions. I defined which services of this system are possible to offer. To guarantee the high-quality transfer in the sites based on IP protocol is very important to guarantee quality of QoS (Quality of Service) services. So I take the aim to that in one of the next chapters. I mentioned quality assurance principles. The main factor that influences the quality of the transfer is which type of data is being transferred in IP network. The next charter is devoted authentication and authorisation in IMS network. I described the integration with Diameter protocol. The main part is devoted to VoIP (Voice over IP), the transfer of voice in IP networks. I defined the main idea of transfer of voice in IP networks. Codecs are very important for the voice transfer in IP networks, so I give a conspectus here. The next chapter gives attention to used protocols. The system could not work without them. It goes around SDP (Session Description Protocol), protocols for real-time data transfer RTP (Real-time Transport Protocol), RTCP (RTP Control Protocol), RTSP (Real-Time Streaming Protocol) - and the most important signalling protocol SIP (Session Initiation Protocol) and its integration with IMS. Finally I rated possibilities of IMS in mobile communication network and their use for VoIP. Among others I take into consideration also economical influences over the expansion of equipment supporting services with implementation IMS for general public.
|
|
|
Echo suppressor according to G.168 recommendation
Lajtkep, Tomáš ; Krajsa, Ondřej (referee) ; Sysel, Petr (advisor)
This master’s thesis deals with conditions and procedures of testing network echo cancellers according to recommendation ITU-T G.168. The point of it’s interest is design of test application which will perform the objective testing their basic and extended features in MATLAB. Theoretical section is concentrated on declaration the ground of echo cancellers and conditions of their testing. Procedures of particular tests follow in next part. The last section designs the testing function which results in entire application which tests submitted canceller and in chosen file write out the report and is also able to display results like graph.
|
|
|
Stability and convergence of numerical computations
Sehnalová, Pavla ; Dalík, Josef (referee) ; Horová, Ivana (referee) ; Kunovský, Jiří (advisor)
Tato disertační práce se zabývá analýzou stability a konvergence klasických numerických metod pro řešení obyčejných diferenciálních rovnic. Jsou představeny klasické jednokrokové metody, jako je Eulerova metoda, Runge-Kuttovy metody a nepříliš známá, ale rychlá a přesná metoda Taylorovy řady. V práci uvažujeme zobecnění jednokrokových metod do vícekrokových metod, jako jsou Adamsovy metody, a jejich implementaci ve dvojicích prediktor-korektor. Dále uvádíme generalizaci do vícekrokových metod vyšších derivací, jako jsou např. Obreshkovovy metody. Dvojice prediktor-korektor jsou často implementovány v kombinacích modů, v práci uvažujeme tzv. módy PEC a PECE. Hlavním cílem a přínosem této práce je nová metoda čtvrtého řádu, která se skládá z dvoukrokového prediktoru a jednokrokového korektoru, jejichž formule využívají druhých derivací. V práci je diskutována Nordsieckova reprezentace, algoritmus pro výběr proměnlivého integračního kroku nebo odhad lokálních a globálních chyb. Navržený přístup je vhodně upraven pro použití proměnlivého integračního kroku s přístupe vyšších derivací. Uvádíme srovnání s klasickými metodami a provedené experimenty pro lineární a nelineární problémy.
|
|
| |
|
| |
|
|
Speculative Evolution: Anatomical and Physiological Specifics of Organisms Inhabiting Super-Earths
Šefrna, Radek ; Toman, Jan (advisor) ; Petrásek, Tomáš (referee)
This thesis focuses on super-Earth-like planets, specifically addressing how a larger radius and gravitational attraction, sometimes associated with increased atmospheric density, could affect the direction of anagenesis if other parameters are kept at the terrestrial level. Firstly, super- Earth characteristics are described. Secondly, locomotion and its anatomical and physiological correlates are examined. It concludes that organisms living on the surface would have robust body structure and expects prevalence of the biosphere to exist in the air column on super- Earths with dense atmosphere with organisms resembling ocean life on Earth. Lastly, the thesis investigates life strategies and their potential dependencies on gravitational and surface characteristics, with an emphasis on energy acquisition methods, metabolism, and dispersion. With the existence of complex ecosystem reliant on photosynthesis, existence of ecological niches similar to the ones found on Earth is expected. That could lead to the genesis of symbioses, as they seem to be a universal feature of any biosphere. Due to its speculative nature, the thesis draws conclusions from studies on terrestrial organisms and their environment. It adheres to the phenomenon of convergent evolution to find possible analogies and show potential...
|
|
|
Dopady finanční krize na konvergenci administrativních oblastí Itálie
Vetýšková, Nela
Vetýšková, N. Effects of the financial crisis on the convergence of administrative regions of Italy. Thesis. Brno: Mendel University in Brno, 2023. The diploma thesis examines the influence of the financial and economic crisis of 2008-2009 on the convergence of the Italian regions defined at the NUTS 2 level. Trends in the convergence of the regions are identified using beta analysis of cross-sectional and panel data and sigma analysis. The results show that in the period before the crisis (1995-2008) convergent forces prevailed, and after the crisis (2009-2018) the trend reversed, and the regions diverged. Cluster analysis for the years 2005 and 2012, confirmed the division of Italy into a more "advanced" north and a "backward" south. The development of individual regions over time is also described using important macroeconomic indicators, such as the gross domestic product, the level of education, the unemployment rate, the average monthly wage and the share of industry in the gross added value.
|
|
|
Uneven Development of the World Economy
Bílý, Boris ; Pavlínek, Petr (advisor) ; Ženka, Jan (referee)
This diploma thesis deals with inequalities within the Word economic development. The development is conceived in the context of world systems theory for the proper evaluation of this development. The question, whether there is a convergence or divergence across countries and groups of countries is an important question of contemporary studies of globalization. While proponents of modernization theory tend to say that countries converge, adherents of world systems theory mostly think the opposite. Another contribution of this work is the evaluation of economic development not based only on the production capabilities and growth. The approach is more complex and includes the development of the society as a whole. Therefore, Human development index was used for analysis and the researched period was set to 1980-2014 due to data availability. The analysis deals not only with inequalities between the parts of the world system, but partially also with inequalities within these parts. The theoretical part consists of discussion of the existing studies of world systems and economic development and explains the necessary terms and context. Practical part is made of own regionalization of the world into three parts of the world system (core, semiperiphery and periphery) based on criteria chosen according to...
|
|
|
Comparison of different approaches of selected Czech media to online formats depending on corporate convergence
Řepková, Andrea ; Jirků, Jan (advisor) ; Trunečka, Ondřej (referee)
The diploma thesis Comparison of Approaches to Online Formats in Selected Czech Media Depending on Corporate Convergence deals with the question of how the approach of selected Czech daily newspapers Mladá fronta Dnes, Deník Právo and Hospodářské noviny to their associated online news servers differs. Since the chosen media share a common characteristic, which is their originally purely print format, the author first describes the concept of media convergence, the process of media internetisation, explains the concept of digitalisation and the economic principles of media. As part of the research, the author first conducts a content analysis of texts published in the print versions of the media, which she then searches for on a news server and compars. The author also conducts three semi-structured interviews with representatives of the selected media. From the data obtained, it can be concluded that the situation is different in each of the media, both in most of the categories of content analysis examined and in the functioning of the newsrooms themselves. The editorial office of Hospodářské noviny is identical in terms of personnel to the editorial office of HN.cz, while the editorial offices of Mladá fronta Dnes and iDnes.cz are two different editorial offices, which, however, cooperate...
|
|
|
Authorship and Photography in the Context of Web 2.0: Product in the Hands of Produsers
Novák, Vojtěch ; Fišerová, Michaela (advisor) ; Michalovič, Peter (referee) ; Slušná, Zuzana (referee)
AUTHORSHIP AND PHOTOGRAPHY IN THE CONTEXT OF WEB 2.0: PRODUCT IN THE HANDS OF PRODUSERS Author: Mgr. Vojtěch Novák This PhD thesis is concentrated on the topic of authorship and photography in the context of web 2.0. As a part of the methodological approach, it uses the method of new media epistemology. It explains the shift from barthesian poststructuralist viewer towards Bruns' produser and also clarifies why the sovereignty of the author is in the context of web 2.0 irrecoverably overcomed. In relation to foucauldian terminology, it presents the concept of dispositif of web 2.0 as a change of social praxis and it points out the necessity of the abandonment of techno-optimism. Subsequently, it concentrates on the topic of authorship and photography from the perspective of the authorial law and it introduces the concept of the quasi-product while using several study cases in order to explain it. Eventually, it summarizes the overall findings and suggests the possible foundation for the further research.
|
guest ::
