This thesis focuses on the development of an advanced history-based aspect language and approaches to certain related issues ranging from applications to analysis methods. The aspect language, namely VPA-based Aspect Language, is defined upon visibly pushdown au- tomata (VPAs) [21]. This language is essentially an extension from an existing framework [47] of regular aspect languages. It features VPA-based pointcuts and provides, in particu- lar, constructors for the declarative definition of pointcuts based on regular and non-regular structures. We have also extended and developed the technique for detecting automatically potential interactions among VPA-based aspects. Despite several advantages of the class of visibly pushdown automata, there has been no practical support for them available. Therefore, we have realized a library called VPAlib that provides the implementation of essential data structures and operations for the VPA. This library is essential to enable the construction and analysis of VPA-based aspects. For instance, we have successfully performed certain analysis for detecting interactions among aspects using this library. In order to motivate the use of VPA-based aspects, we have studied two basic kinds of distributed applications, one representing typical systems with nested login sessions, and the other representing a grid computing system over peer-to-peer network. We have shown how VPA-based aspects can be useful for the realization of certain functionalities of these typical distributed applications. Thanks to their highly expressive pointcuts, another important application of VPA-based aspects is to define evolution on component-based systems, especially those with explicit component protocols. The use of aspects over component protocols, however, may break the coherence between the components of the system. We have further developed proof methods to establish the preservation of fundamental correctness properties, such as compatibility and substitutability relations between software components after the application of VPA-based aspects. Finally, we have considered the use of model checking techniques to verify systems that are modified by aspects. The goal of the verification is to check whether an aspect violates the global properties of a base system or the properties of other aspects. We have chosen the approach in which we create an abstract model from the VPA model and then run a model checker that is capable of checking the abstract model against the properties. We formally define the abstraction process and demonstrate our model checking approach via examples.

This master's thesis analyses the lexicographical treatment of interjections in current German- Czech commercial dictionaries, special focus is laid on user aspect. The goal of this thesis is to provide an overview of possible issues in the lexicographical processing of interjections. The focus is on both the macrostructure with the selection of lemmas and microstructure of the respective analysed entries. Compared to corpus data and to monolingual dictionaries, problems include especially part of speech specifications, selection of Czech translation equivalents, lack of examples demonstrating the pragmatic function of the interjections, or insufficient metalanguage comments. The example of the dictionary entry of the lemma ach shows which steps and decisions must be made by the lexicographical work. At the end, concrete solutions for the lexicographical treatment of interjections are proposed, such as the exact classification of the respective meanings, metalanguage comments on these meanings, necessary attention to the prosodic and syntactic properties, and dialogical examples.