Thesis title: Legal regulation of watercourse protection Abstract Watercourses are the most important form of surface water occurrence in the Czech Republic, and therefore their condition also significantly affects the overall state of all our aquatic ecosystems. Despite of it, the ecological and chemical status of watercourses is still not satisfying. This fact requires an increase in the efficiency and complexity of their legal protection, which is the subject of this thesis. The aim of the first part of this thesis is to describe the national legal regulation of watercourses protection in the context of European and international law. At present, national and international legislation is significantly influenced by European legislation provided by the Water Framework Directive. The first part pays attention to the instruments of national legislation, that are relevant to the second part of the work. The first aim of the second part of this thesis is to analyse the basic measures proposed in the two selected sub-basins in order to achieve the objectives of the Water Framework Directive, particularly the good water status. Following this analysis, the second aim is to find out what specific instruments the current legislation provides for the realization of the proposed measures and whether these...

Στη διατριβή εξετάζουμε προβλήματα που σχετίζονται με τη μετάδοση δεδομένων με υψηλές απαιτήσεις σε εύρος ζώνης και προτείνουμε λύσεις, αλγόριθμους, τεχνικές βελτίωσης της απόδοσης, και εφαρμογές που τις υλοποιούν. Για την περίπτωση του προβλήματος της μετάδοσης βίντεο κατ' απαίτηση (Video on Demand - VoD), εξετάζουμε το πρόβλημα της αποδοχής ή της απόρριψης αιτήσεων για μετάδοση ταινιών χωρίς να υπάρχει γνώση των μελλοντικών αιτήσεων. Παρουσιάζουμε έναν, άμεσης απόκρισης (online), πιθανοτικό αλγόριθμο χρονοπρογραμματισμού ταινιών που εκμεταλλεύεται την γνώση για την κατανομή των προτιμήσεων των αιτήσεων για ταινίες, και αποδεικνύουμε πως έχει ανταγωνιστικό λόγο (competitive ratio) που φράσσεται άνω από σταθερά. Επίσης, δείχνουμε πως η μέθοδος μας μπορεί να επεκταθεί σε ένα προσαρμοζόμενο αλγόριθμο που δεν γνωρίζει την κατανομή των προτιμήσεων. Επίσης, προτείνουμε έναν τρόπο να εφαρμόσουμε μια υπηρεσία βίντεο κατ' απαίτηση για ένα, βασισμένο στο πρωτόκολλο IP, δίκτυο, με περιορισμένο εύρος ζώνης. Στη συνέχεια, εξετάζουμε ένα σχήμα ελέγχου και διαχείρισης του εύρους ζώνης και παρουσιάζουμε ορισμένες μεθόδους προκειμένου να αυξήσουμε την αποδοτικότητα του συστήματος και την εκμετάλλευση του διαθέσιμου εύρους ζώνης (bandwidth). Εξετάζουμε διάφορες τεχνικές και παρουσιάζουμε πειραματικά αποτελέσματα για την βελτίωση της απόδοσης. Επίσης, σχεδιάζουμε και υλοποιούμε μια υπηρεσία διαχείρισης εύρους ζώνης (Managed Bandwidth Service -- MBS). Τέλος παρουσιάζουμε μια ενοποιημένη προσέγγιση για την μετάδοση υπερμεσικών/πολυμεσικών αντικειμένων, τα οποία παρουσιάζονται με βάση προκαθορισμένα σενάρια παρουσίασης (με χωροχρονικές αλληλοεξαρτήσεις μεταξύ των διάφορων μέσων). Τα υπερμεσικά αντικείμενα δομούνται σύμφωνα με μία γλώσσα σηματοδότησης, μέσω της οποίας διατηρούνται πληροφορίες για τις χωρικές και χρονικές συσχετίσεις. Επίσης, υλοποιούμε ένα τέτοιο σύστημα μετάδοσης, που εφαρμόζουμε για εκπαίδευση από απόσταση. / In this thesis we investigate problems related to the transmission of data with high demands in terms of bandwidth, and we propose solutions, algorithms, techniques to increase performance, and applications that use them. For the case of the online video on demand problem, we investigate the problem of having to accept or reject a request for a movie without knowing the future requests. We present an online movie-scheduling scheme that exploits the knowledge of the distribution of the preference of requests for movies, and is shown to have a competitive ratio bounded above by a constant. We extend our approach by presenting an adaptive randomized scheduler which is not aware of the movie popularities. In the sequel we propose a way to implement a video on demand service over a limited bandwidth/best effort Internet based network. Ιn the sequel, we consider a bandwidth control scheme, and we present some methods to increase the efficiency of the system and the utilisation of the available bandwidth. We consider different techniques and we present experimental results for the increased performance. We, also, design and implement a Managed Bandwidth Service (MBS) . Finally, we present a unified approach for delivering hypermedia/multimedia objects, that are to be presented according to predefined scenarios (with spatial and temporal relationships between the various media). The hypermedia documents are structured using a hypermedia markup language that keeps information of the spatiotemporal relationships among document's media components. We, also, implement such a multimedia transmission system, and apply it to distance learning.

The topic of this thesis is the impact of fish pond harvest on water quality especially on concentration of suspended solids and phosphorous. Goal of the study is to contribute to ongoing discussion about carp aquaculture's role in fresh water pollution. Sampling was carried out in five carp ponds in the Třeboňsko Protected Landscape Area. Main monitored parameters were concentration of suspended solids and total phosphorous during pond drainage and fish harvest.Results of the study confirmed very negative impact of fish harvest on water quality in recipient water.

The theoretical part of the Master´s thesis describes steroids, their features, and the methods for their determination in waters. In experimental part three steroid hormones, namely 1,4-androstadiene-3,17-dione (ADD), 1,4-androstadiene-3-one-17(beta)-ol (boldenone) and 17(beta)-estradiol were selected. The compounds were concentrated from water by LLE and SPE extraction and determined by gas chromatography coupled to mass spectrometry. Several experiments were conducted to assess the recovery of specific extraction for studied compound.

The goal of this work was to evaluate of water quality in natural swimming pools in Borovany and Sezimovo Ústí, to compare the differences in the results of water analyses in proper swimming water body and regenerative part, as well as to compare of both these localities. Most of results were gathered during 2016 in Borovany and during 2017 in Sezimovo Usti. Transparency, color of water, temperature, conductivity, concentration of dissolved O2, concentrations of NH4-N, NO2-N, NO3-N, TN, PO4-P, TP, Cl, turbidity, fluorescence, chlorophyll concentration, alkalinity, zooplankton and phytoplankton composition and bacterial contamination were monitored. The results confirmed the possibility to achieve the good water quality even though the problem with phosphorus removing remains. The comparison of both site showed more efficient functioning of regenerative zone in Borovany natural swimming pool.

IP Multimedia Subsystem (IMS) is the next generation of telecommunication systems. The system is based on an IP network and uses technologies from the Internet. The IMS system is designed to evolve from a telephone system into a general information and communication system. It is meant to include television, Video on Demand (VoD), interactive services etc, etc. It is designed to simplify the implementation of newservices in telecom networks. This report investigates security aspects of VoD services when merging an IP Television (IPTV) system with IMS. The investigation covers security functions in IMS, transitionsolutions for authentication of the Set-Top-Box (STB) in IMS, and identifies problems inthe integration of IPTV and IMS. The report concludes that IMS has good solid Authentication, Authorization, and Accounting (AAA) functions that will provide security and billing functionality. One problemis found in the media control between the STB and the streaming server. This interface lacked specification at the time of investigation, and some problems have been identified. These problems have to be solved before a system can be brought into service and beregarded as secure.

This master's thesis deals with the modeling of biochemical processes in saturated vertical filter (which is often part of constructed treatment wetland) using software HYDRUS 2D and the module Constructed Wetland CW2D. The introductory part of this thesis is the literature research of expertise that are introduce with the theme constructed treatment wetlands and should also provide a basic overview of the mathematical or numerical modeling issue. The last chapter describes the theoretical introduction of software HYDRUS 2D and CW2D module, it is the practical part used to create a numerical l model. The practical part is based on theoretical knowledge and demonstrates the creating process of mathematical model in program HYDRUS 2D, simulating the real biochemical processes on the vertical saturated filter. The model is created in the program HYDRUS 2D CW2D and based on real operated constructed wetland. The thesis describes the calibration and followed verification of this model. The final model can well simulate the real filter behavior and allows user to get information about the output concentrations of waste water emission, such as ammonia nitrogen (N-NH4+) and chemical oxygen demand (COD). The results should in the future contribute to create software intended to draft and layout constructed wetlands.

The main subject of this dissertation is the ecotoxicological evaluation of significant point sources of pollution. These include wildfires and wide fires of factories and also industrial and urban wastewater treatment plants. The local application of pyrolytic product obtained from sewage sludge as the point source of pollution was also included in the thesis. Tests in aquatic and contact arrangement with using both water and soil organisms for ecotoxicity evaluation of selected matrices were chosen. Crustaceans Thamnocephalus platyurus, Daphnia magna Straus and sea bacteria Vibrio fischeri were selected as representative organisms of water animals. Duckweed Lemna minor was chosen as water plant. Further collembola Folsomia candida and earthworm Eisenia fetida were chosen as representatives of soil animals. Finally onion Allium cepa L. and mustard Sinapis alba are representatives of terrestrial plants. Submitted thesis deals about analytes of interest, their properties and ways of distribution to the environments. The output of the thesis is a comprehensive assessment of the effects of selected point sources of pollution on aquatic and terrestrial ecosystems organisms and ecotoxicological risks assessment. The fire extinguishing agents have been proven to be the most stressful substances for all selecteded organisms.

In it´s theoretical part, my master thesis handles selected softwares for wastewater treatment mathematical modelling. It summarizes and compares availible softwares on the market, it´s use, advantages and disadvantages. The practical part deals with an exemplar evaluation of selected wastewater treatment plant according to Czech normative standards and evaluation of the same wastewater treatment plant per mathematical model created in WEST program. The assembly of a wastewater treatment plant model consisted of studies, creation of the layout, insertion of provided data, calibration and model evaluation.

The diploma thesis is focused on the possibilities of drainage of waste water and its subsequent liquidation in the village of Kamenný Malíkov. The aim of this diploma thesis is the elaboration of variant solutions for drainage of Kamenný Malíkov. Furthermore, the proposal for wastewater treatment, the economic comparison of variants and the recommendation of the unsuitable variant. The diploma thesis deals with the proposal of predominantly gravitational way of drainage of waste water in combination with the pressure, due to incline terrain in the village. Each eventuality has wastewater treatment method designed.