Thesis (Ph. D.)--University of Texas at Austin, 2008. / Vita. Includes bibliographical references.

Thesis (Ph.D.)--University of Western Australia, 2006.

Thesis (Ph. D.)--University of Texas at Austin, 2005. / Supervisor: Vladimir Lifschitz. Vita. Includes bibliographical references.

Thesis (Ph. D.)--Carnegie Mellon University, 2005. / "May 2005." Includes bibliographical references.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1984. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 224-228).

Thesis (Ph. D.)--University of Texas at Austin, 2005. / Vita. Includes bibliographical references.

In a context of heightened requirements for safety-critical embedded systems and ever-increasing costs of verification and validation, this research proposes to advance the state of formal analysis for control software. Formal methods are a field of computer science that uses mathematical techniques and formalisms to rigorously analyze the behavior of programs. This research develops a framework and tools to express and prove high level properties of control law implementations. One goal is to bridge the gap between control theory and computer science. An annotation language is extended with symbols and axioms to describe control-related concepts at the code level. Libraries of theorems, along with their proofs, are developed to enable an interactive proof assistant to verify control-related properties. Through integration in a prototype tool, the process of verification is made automatic, and applied to several example systems.In a context of heightened requirements for safety-critical embedded systems and ever-increasing costs of verification and validation, this research proposes to advance the state of formal analysis for control software. Formal methods are a field of computer science that uses mathematical techniques and formalisms to rigorously analyze the behavior of programs. This research develops a framework and tools to express and prove high level properties of control law implementations. One goal is to bridge the gap between control theory and computer science. An annotation language is extended with symbols and axioms to describe control-related concepts at the code level. Libraries of theorems, along with their proofs, are developed to enable an interactive proof assistant to verify control-related properties. Through integration in a prototype tool, the process of verification is made automatic, and applied to several example systems.

The aim of this diploma thesis Computer aided verification and proving of geometric theorems is verification and proving of selected geometric theorems and statements using dynamic geometry software (GeoGebra) and computer algebra programs (CoCoA). Each problem is first demonstrated and verified in the GeoGebra program. Then classical proof and computer aided proof, or determination of the equation of a curve, using the program CoCoA follow. The use of dynamic geometry software and computer algebra programs is suitable as a teaching tool in maths lessons at primary and secondary schools.

Les interfaces homme-machine (IHM) multimodales offrent à l’utilisateur la possibilité de combiner les modalités d’interaction afin d’augmenter la robustesse et l’utilisabilité de l’interface utilisateur d’un système. Plus particulièrement, en sortie, les IHM multimodales permettent au système de restituer à l’utilisateur, l’information produite par le noyau fonctionnel en combinant sémantiquement plusieurs modalités. Dans l’optique de concevoir de telles interfaces pour des systèmes critiques, nous avons proposé un modèle formel de conception des interfaces multimodales en sortie. Le modèle proposé se décompose en deux modèles : le modèle de fission sémantique qui décrit la décomposition de l’information à restituer en informations élémentaires, et le modèle d’allocation qui spécifie l’allocation des modalités et médias aux informations élémentaires. Nous avons également développé une formalisation B Événementiel détaillée des deux modèles : fission sémantique et allocation. Cette formalisation a été instanciée sur des études de cas puis généralisée dans un processus de développement B Événementiel cadre dans lequel s’inscrivent les modèles de fission sémantique et d’allocation. Cette formalisation a permis de procéder à la vérification de propriétés de sûreté, de vivacité et d’utilisabilité. / Multimodal Human-Computer Interfaces (HCI) offer to users the possibility to combine interaction modalities in order to increase user interface robustness and usability. Specifically, output multimodal HCI allow system to return to the user, the information generated by the functional core by combining semantically different modalities. In order to design such interfaces for critical systems, we proposed a formal model for the design of output multimodal interfaces. The proposed model consists of two models: the semantic fission model describes the decomposition of the information to return into elementary information and the allocation model specifies the allocation of the elementary information with modalities and media. We have also developed a detailed Event B formalization for the two models: semantic fission and allocation. This formalization has been instantiated on case studies and generalized in an Event B development process framework including semantic fission and allocation models. This formalization allows to carry out safety, liveness and usability properties verification.

- Means of Evidence in Civil Proceedings The topic of this thesis is means of evidence in civil process. The taking of evidence is the most important part of civil proceedings, and therefore this paper presents its comprehensive summary, together with an overview of the means of evidence available in civil proceedings. This work is divided into three main parts with many subchapters. The first part deals with the process of proving in general. It describes its course, main principles and rules that govern it. Likewise, this section focuses on partial issues in the taking of evidence, such as the standard of evidence or proving negative facts. Last but not least, it deals with the burden to claim and prove facts and their distribution among the parties. The second part deals with evidence expressly provided for in the Code of Civil Procedure. In practice, these means of proof are most often found in court proceedings, and therefore their application is dealt with in a number of texts and court decisions. Nevertheless, this section outlines how the individual evidence has evolved over time. The third part deals with non- regulated evidence in the Code of Civil Procedure. Of these, the most widespread is audio and video recordings whose crucial issue is their admissibility in the light of the right to...