196 research outputs found

    Divide and Conquer: the Quest for Compositional Design and Analysis (Dagstuhl Seminar 12511)

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    On December 17 to 21, the Dagstuhl seminar "Divide and Conquer: the Quest for Compositional Design and Analysis" was organized. Topic was the compositionally, a central theme in computer science, but its applications, methods, techniques are scattered around many different disciplines. Therefore, this workshop brought together scientists from different disciplines, including deductive verification, model checking, software product lines, component interfaces

    DynAbs: Abstraction-Based Controller Synthesis for Stochastic Linear Dynamical Systems

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    Item does not contain fulltextDynAbs is a tool for computing feedback controllers for stochastic linear dynamical systems with reach-avoid control tasks. The returned controllers are provably correct, which means that they satisfy the reach-avoid task with at least a desired threshold probability. This code archive contains the content of the git repository of DynAbs (https://github.com/LAVA-LAB/DynAbs; main branch), copied on August 25, 2024. The archive contains all code and instructions needed to replicate the results presented in the following papers: Thom Badings, Alessandro Abate, David Parker, Nils Jansen, Hasan Poonawala & Marielle Stoelinga (2022). Sampling-based Robust Control of Autonomous Systems with Non-Gaussian Noise. AAAI 2022 Thom Badings, Licio Romao, Alessandro Abate, David Parker, Hasan Poonawala, Marielle Stoelinga & Nils Jansen (2022). Robust Control for Dynamical Systems with Non-Gaussian Noise via Formal Abstractions. JAIR 2023 Thom Badings, Licio Romao, Alessandro Abate, & Nils Jansen (2023). Probabilities Are Not Enough: Formal Controller Synthesis for Stochastic Dynamical Models with Epistemic Uncertainty. AAAI 2023 For further information and references to the relevant papers, we refer to the ReadMe within this code archive

    Pollen loads and pollination efficiency of inflorescence visitors, and pollen limitation in Arum maculatum L

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    author: Marielle Charlotte SchleiferLiteraturverzeichnis: Blatt 20-22Masterarbeit Paris Lodron University of Salzburg 202

    Certified Abstract Cost Analysis

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    A program containing placeholders for unspecified statements or expressions is called an abstract (or schematic) program. Placeholder symbols occur naturally in program transformation rules, as used in refactoring, compilation, optimization, or parallelization. We present a generalization of automated cost analysis that can handle abstract programs and, hence, can analyze the impact on the cost of program transformations. This kind of relational property requires provably precise cost bounds which are not always produced by cost analysis. Therefore, we certify by deductive verification that the inferred abstract cost bounds are correct and sufficiently precise. It is the first approach solving this problem. Both, abstract cost analysis and certification, are based on quantitative abstract execution (QAE) which in turn is a variation of abstract execution, a recently developed symbolic execution technique for abstract programs. To realize QAE the new concept of a cost invariant is introduced. QAE is implemented and runs fully automatically on a benchmark set consisting of representative optimization rules

    Risk management for high tech systems

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    Item does not contain fulltextFormaliSE '18: 6th Conference on Formal Methods in Software Engineering, Gothenburg, Sweden — June 02 - 02, 201

    La constitution d'un personnage-idole chez Jean Cocteau : l'ange

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    The observation of the constitution and evolution of the theme of the angel in Jean Cocteau 's works allows us to uncover a phenomenon of literary idolatry. The angel, a figure which is traditionally iconic - an «image/go-between» allowing communication with the divine sphere — is subverted here, by an author who ends up investing his own creation with an aspiration towards the hereafter. The angel 's body captures its creator's look who then seems to be condemned to write an eternal mulling over, conditioned by his hostility towards any form of otherness.L'observation de la constitution et de l'évolution du motif angélique au sein de l'œuvre de Jean Cocteau permet de mettre au jour un phénomène d'idolâtrie littéraire. L'ange, figure traditionnellement iconique - «image-relais» permettant la communication avec le divin -, se trouve ici subvertie, par un auteur qui en vient à investir dans sa propre création une aspiration au départ tournée vers l'au-delà. Le corps de l'ange capte le regard de son créateur, qui semble désormais condamné à une écriture du ressassement, conditionnée par son hostilité à toute forme d'altérité.Wyns Marielle. La constitution d'un personnage-idole chez Jean Cocteau : l'ange. In: Revue théologique de Louvain, 33ᵉ année, fasc. 1, 2002. pp. 61-79
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