The thesis describes the analysis and proposal of changes in the information system for the company My to opravime s. r. o. This company deals with electrical equipment servicing. Changes in the information system, which is realized through a web application, were defined based on the analysis. The application is developed in a way that fits the processes of the company and the requirements of the customers, so that it brings the highest added value. The thesis also describes the methods, procedures and current technologies that are used for the development of the web applications

This diploma thesis deals with a project and an implementation of the information system according to Agrall servis a.s. company requirements. The company offers and arranges an agricultural service. The thesis contains theoretical information on the employment of technologies and system analysis of the company. A practical section of the thesis deals with a specification of requirements and a project of the information system including a subsequent implementation.

Diploma thesis is about creating server application that process and interprets data from the database. Main aim of such application is able to process a large number of database requests in real-time environment. Provided database contains records of measuring download speed and quality of mobile connection via different radio technology from various providers. Those measured data are sent from users all around the world and amount of data collected is still growing. Therefore created server application can adapt to increasing size of database thanks to aggregation. This method of aggregation and use of index in database tables are further discussed in the theoretical part. Mainly putting indexes in tables produce significant acceleration of processing database requests. Final product of this thesis is an application that consist of three components: a server application running aggregation, website that interprets measured data and back-end interface providing measured data as well. Data at the website are presented in form of graphs for different countries and used radio technologies. Web address and user manual for finished applications are provided in the fourth chapter of diploma thesis. In the last part of thesis are performed various speed tests of programmed application that confirm the effectiveness of selected and described methods to accelerate work with the database.

Das Projekt 'Deutscher Wortschatz' wurde Anfang der 90er Jahre am Institut für Informatik der Universität Leipzig begonnen und stellt mittlerweile eine der umfangreichsten korpuslinguistischen Datensammlungen zur deutschen Sprache dar. Der zunehmende Umfang der Sammlung und die wachsende Akzeptanz durch verschiedene Anwender aus Forschung und Wirtschaft zeigen deutlich die Grenzen der gegenwärtig verwendeten Architektur im Hinblick auf Skalierbarkeit, Performanz und Verfügbarkeit auf. Diese Diplomarbeit beschreibt die Konzeption und Implementierung eines linguistischen Applikationsservers, der als Plattform für korpuslinguistische Anwendungen eingesetzt werden kann und insbesondere auf die Bedürfnisse des Projektes ``Deutscher Wortschatz'' ausgerichtet ist. Dabei handelt es sich um eine auf mehrere Rechner verteilbare, plattformneutrale Anwendung, die skalierbar ist, eine hohe Verfügbarkeit aufweist und die transparente Integration neuer Anwendungen ermöglicht. Dabei stehen die Belange linguistischer Software im Vordergrund, obwohl der Einsatz des Systems auch in anderen Aufgabenbereichen denkbar ist. Der konzeptionelle Teil der Arbeit beschreibt zunächst die Besonderheiten und Eigenschaften, die linguistische Systeme, insbesondere solche, die mit großen Korpora arbeiten, besitzen und leitet daraus Forderungen ab, die eine Entwicklungsumgebung erfüllen muß, um diese Anwendungsklasse zu unterstützen. Ein weiterer Schwerpunkt ist die Analyse und Begriffsdefinition der Klasse der Applikationsserver -- eine neue Softwaregattung die sich in einer eigenen Schicht zwischen System- und Anwendungssoftware ausgebildet hat. Im Hinblick auf den Einsatz in einem PC-Cluster fließen in die Konzeption eines linguistischen Applikationsservers auch Aspekte verteilter Systeme ein, die beim Entwurf des Systems berücksichtigt werden. Die Vorstellung der Implementierung des vorgeschlagenen Konzepts bildet den zweiten, umfangreicheren Teil der Arbeit und stellt dem Projekt 'Deutscher Wortschatz' ein neues Werkzeug zur Verfügung, das die Entwicklung verteilter, linguistischer Anwendungen erleichtert und die hohe Leistungsfähigkeit der Clusterarchitektur ausnutzt. Außerdem wird mit der Realisierung des vorgeschlagenen Konzepts dessen Praktikabilität nachgewiesen und damit gezeigt, wie in der Zukunft komplexe linguistische Softwaresysteme aufgebaut sein könnten.

This thesis deals with the Smart cities topic in the Czech Republic. The theore-tical part is a review of this topic. In the practical part are created applications, which can be included into the concept of Smart Cities. Specificaly is made an ana-lysis, design and implementation of a web application, that allow you manage terms of street block cleaning. The application also allows users to set alerts for particular street. Furthermore is made an analysis, design and implementation of mobile application for devices running Android. This application allows you to set alerts for users in a particular street.

The thesis deals with data acquisition from crowdfunding and their analysis. The theoretical part is focused on the description of available technologies and algorithms for data analysis. In the practical part the data collection is realized. Data mining and text mining algorithms are applied in this section for data.

KTHFS is a highly available and scalable file system built from the version 0.24 of the Hadoop Distributed File system. It provides a platform to overcome the limitations of existing distributed file systems. These limitations include scalability of metadata server in terms of memory usage, throughput and its availability. This document describes KTHFS architecture and how it addresses these problems by providing a well coordinated distributed stateless metadata server (or in our case, Namenode) architecture. This is backed with the help of a persistence layer such as NDB cluster. Its primary focus is towards High Availability of the Namenode. It achieves scalability and recovery by persisting the metadata to an NDB cluster. All namenodes are connected to this NDB cluster and hence are aware of the state of the file system at any point in time. In terms of High Availability, KTHFS provides Multi-Namenode architecture. Since these namenodes are stateless and have a consistent view of the metadata, clients can issue requests on any of the namenodes. Hence, if one of these servers goes down, clients can retry its operation on the next available namenode. We next discuss the evaluation of KTHFS in terms of its metadata capacity for medium and large size clusters, throughput and high availability of the Namenode and an analysis of the underlying NDBcluster. Finally, we conclude this document with a few words on the ongoing and future work in KTHFS.

Denna studie jämför relationsdatabasen MySQL med icke-relationsdatabasen MongoDB när komplexa sökfrågor ställs mot ett dataset som består av över 67 000 rader data. Problemet som uppstår blir att veta vilken av MySQL och MongoDB som presterar bäst och med kortast svarstider. För att ta reda på vilken av databaserna som har kortast svarstider har experiment utförts i en kontrollerad miljö, för att få ett så korrekt resultat som möjligt. Resultatet av experimentet blev att MySQL fick överlag kortast svarstider när komplexa sökfrågor ställdes. När en enkel sökfråga ställdes, fick MySQL och MongoDB nästintill identiska svarstider. Slutsatsen som drogs från denna studie var att MySQL fick snabbare svarstider än MongoDB när komplexa sökfrågor ställdes mot ett dataset som bestod av en stor mängd data.

The aim of this diploma thesis is design and implementation of experimantal data network central management in convergent network technology laboratory. This diploma thesis is devided into several chapters. Management network fundamentals are described in introduction. Actually used experimental network is analyzed in the second chapter. Design and implemantion of web modular information system are presented in third part. Solution of central management network system is summarised at the end of this thesis.

The aim of this diploma thesis is design and implementation of experimantal data network central management in convergent network technology laboratory. This diploma thesis is devided into several chapters. Management network fundamentals are described in introduction. Actually used experimental network is analyzed in the second chapter. Design and implemantion of web modular information system are presented in third part. Solution of central management network system is summarised at the end of this thesis.