As Redes Ad Hoc Veiculares (Veicular Ad Hoc Networks (VANETs)) são redes móveis que possuem como propósito a comunicação entre veículos para fornecer segurança e entretenimento a seus ocupantes. A comunicação pode ocorrer de três modos: Vehicle-to-Vehicle (V2V), Vehicle-to-Infrastructure (V2I) e híbrida (V2V e V2I ao mesmo tempo). As redes V2I e híbridas apresentam elevados custos de construção e manutenção, pois necessitam ser estabelecidas em locais que possuam infraestrutura fixa, o que as tornam impraticáveis na maioria das vezes. As redes V2V, por sua vez, apresentam baixos custos de construção, pois podem ser estabeleci- ˜ das em qualquer ambiente urbano, entretanto dependem do fluxo de veículos nestes ambientes para manter a conectividade e o bom desempenho. Em ambientes urbanos existem basicamente veículos particulares, veículos de transporte pesado, e veículos de transporte coletivo (ônibus). Entre estes, os veículos de transporte coletivo apresentam um comportamento de trafego diferenciado em relação aos demais veículos. Em particular, na cidade de Curitiba, os ônibus pertencentes as linhas expressas trafegam por canaletas exclusivas, segundo um escalonamento ` relativamente regular, em um trajeto linear praticamente sem obstáculos. Estas características sugerem que um sistema que faz uso destes ônibus para a criação de uma infraestrutura de comunicação apresentará um desempenho superior quando comparado a um sistema que não faz distinção entre veículos. Assim sendo, este trabalho propõe a utilização dos ônibus do transporte coletivo urbano para formar uma rede de transporte de dados (backbone) ad hoc móvel (BMVA), a qual irá prover conectividade e aumentar o desempenho da rede sem utilizar infraestrutura fixa. Novos protocolos de roteamento capazes de explorar a conectividade intrínseca fornecida pelo BMVA também são propostos. Estes protocolos foram desenvolvidos tomando-se por base os protocolos AODV, AOMDV e DSDV. Análises estatísticas com dados reais, bem como experimentos de simulação, comprovam que o BMVA e os novos protocolos podem criar uma infraestrutura de comunicação móvel e promover o aumento de métricas de desempenho, como a taxa de entrega e a vazão dos pacotes de dados. / Vehicular Ad Hoc Networks (VANETs) are mobile networks which have as a purpose the communication between vehicles in order to provide safety and entertainment to their users. The communication may occur in three ways: Vehicle-to-Vehicle (V2V), Vehicle-to-Infrastructure (V2I) and hybrid (V2V and V2I at the same time). V2I and hybrid networks have, usually, high costs of implementation and maintenance, for they need to be implemented in places with a fixed infrastructure, which will be impracticable most of the times. V2V networks, on the other hand, have low cost of implementation, for they may be implemented in any urban nvironment. However, V2V networks would depend on the vehicles flow in order to keep connectivity and a good performance. In urban environments there are basically private vehicles, cargo vehicles and public transport vehicles (buses). Of these, the public transport vehicles present a distinct behavior in regard to other vehicles. Specifically, in the city of Curitiba, the buses from express lines travel in exclusive lanes, following a relatively regular schedule, in a linear route with practically no obstacles. These characteristics suggest that a system using those buses for the deployment of a communication infrastructure would present a superior performance if compared to a system which makes no distinction between vehicles. Thus, this work proposes the utilization of public transport urban buses for the implementation of an mobile backbone (BMVA), which will provide connectivity and improve the network performance without using a fixed infrastructure. New routing protocols, capable of exploring the intrinsic connectivity provided by BMVA are also proposed. These protocols were developed from AODV, AOMDV and DSDV protocols. Statistical analyses with real data and simulation experiments, confirm that BMVA and the new protocols can create a mobile communication infrastructure and increase the performance metrics such as delivery rate and throughput.

This thesis deals with the possibility to evaluate cognitive and emotional traits and their relations to job positions and functions. The basis is to create a set of tests which could be used during a hiring procedure while deciding among candidates. It also suggests how to classify users based on a set of tests and thereby provide support in choosing the right job. The thesis gives a brief outlook of individually tested traits, describes a proposal of a web application and its implementation, describes implementation of neural network classifier and presents obtained results.

The thesis analyses competitive environment of suppliers of concurrent quality control technology in industrial enterprises and research laboratories. The thesis provides concepts for a creation of competitive advantages and related higher evaluation of costs and diferentiation than competition. Further it compares technologies from various manufacturers, comparing economical and technical parametres. The evaluation of results follows a presentation of approachs to achieve the most efficient competitors fight management. The thesis also include prognosis of future conditions in the business technology sector on Czech and Slovak market and concept of an appropriate format of effective competitive intelligence. In conclusion there is a presentation of a quality and quantity concept evaluation with emphasis on economic gain of presented solution.

This thesis deals with the applicability of Anthony Downs rational choice theory to the Czech environment, respectively the utility of its model to explain voter turnout and identification of rationality among Czech voters. First part provides theoretical foundation of work, explanation of basic concepts from which the work draws and alternative theories to the research problem. It also presents current state of society in terms of policy perceptions, and participation in elections. The core of the work is to present Downs' rational choice theory, different views on it and its possible extension in terms of criticism. The basic variables introduced are here, in particular how are percieved by various authors, what is their content and what affects them. In the analytical part, the variables are examined within the reserach aims in terms of frequency in the population and individual segments of the electorate. The primary parameters of the rational choice theory model are then tested in terms of interdependence, and in terms of their significance in the model and their influence on voter turnout. The conclusion summarizes the research results, and demonstrates evaluation of the applicability of the model to the Czech voters, the relevance of individual variables representing the rational choice...