1000 resultados para Code validation


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National Highway Traffic Safety Administration, Washington, D.C.

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National Highway Traffic Safety Administration, Washington, D.C.

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Federal Highway Administration, McLean, Va.

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National Highway Traffic Safety Administration, Vehicle Engineering Research Division, Washington, D.C.

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Federal Highway Administration, Washington, D.C.

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National Highway Traffic Safety Administration, Crash Avoidance Research Division, Washington, D.C.

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National Highway Traffic Safety Administration, Washington, D.C.

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The results of empirical studies are limited to particular contexts, difficult to generalise and the studies themselves are expensive to perform. Despite these problems, empirical studies in software engineering can be made effective and they are important to both researchers and practitioners. The key to their effectiveness lies in the maximisation of the information that can be gained by examining existing studies, conducting power analyses for an accurate minimum sample size and benefiting from previous studies through replication. This approach was applied in a controlled experiment examining the combination of automated static analysis tools and code inspection in the context of verification and validation (V&V) of concurrent Java components. The combination of these V&V technologies was shown to be cost-effective despite the size of the study, which thus contributes to research in V&V technology evaluation.

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E-learning is supposing an innovation in teaching, raising from the development of new technologies. It is based in a set of educational resources, including, among others, multimedia or interactive contents accessible through Internet or Intranet networks. A whole spectrum of tools and services support e-learning, some of them include auto-evaluation and automated correction of test-like exercises, however, this sort of exercises are very constrained because of its nature: fixed contents and correct answers suppose a limit in the way teachers may evaluation students. In this paper we propose a new engine that allows validating complex exercises in the area of Data Structures and Algorithms. Correct solutions to exercises do not rely only in how good the execution of the code is, or if the results are same as expected. A set of criteria on algorithm complexity or correctness in the use of the data structures are required. The engine presented in this work covers a wide set of exercises with these characteristics allowing teachers to establish the set of requirements for a solution, and students to obtain a measure on the quality of their solution in the same terms that are later required for exams.

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Le laboratoire DOMUS développe des applications sensibles au contexte dans une perspective d’intelligence ambiante. L’architecture utilisée présentement pour gérer le contexte a atteint ses limites en termes de capacité d’évoluer, d’intégration de nouvelles sources de données et de nouveaux capteurs et actionneurs, de capacité de partage entre les applications et de capacité de raisonnement. Ce projet de recherche a pour objectif de développer un nouveau modèle, un gestionnaire de contexte et de proposer une architecture pour les applications d’assistance installées dans un habitat intelligent. Le modèle doit répondre aux exigences suivantes : commun, abstrait, évolutif, décentralisé, performant et une accessibilité uniforme. Le gestionnaire du contexte doit permettre de gérer les événements et offrir des capacités de raisonnement sur les données et le contexte. La nouvelle architecture doit simplifier le développement d’applications d’assistance et la gestion du contexte. Les applications doivent pouvoir se mettre à jour si le modèle de données évolue dans le temps sans nécessiter de modification dans le code source. Le nouveau modèle de données repose sur une ontologie définie avec le langage OWL 2 DL. L’architecture pour les applications d’assistance utilise le cadre d’applications Apache Jena pour la gestion des requêtes SPARQL et un dépôt RDF pour le stockage des données. Une bibliothèque Java a été développée pour gérer la correspondance entre le modèle de données et le modèle Java. Le serveur d’événements est basé sur le projet OpenIoT et utilise un dépôt RDF. Il fournit une API pour la gestion des capteurs / événements et des actionneurs / actions. Les choix d’implémentation et l’utilisation d’une ontologie comme modèle de données et des technologies du Web sémantique (OWL, SPARQL et dépôt RDF) pour les applications d’assistance dans un habitat intelligent ont été validés par des tests intensifs et l’adaptation d’applications déjà existantes au laboratoire. L’utilisation d’une ontologie a pour avantage une intégration des déductions et du raisonnement directement dans le modèle de données et non au niveau du code des applications.

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Nuclear cross sections are the pillars onto which the transport simulation of particles and radiations is built on. Since the nuclear data libraries production chain is extremely complex and made of different steps, it is mandatory to foresee stringent verification and validation procedures to be applied to it. The work here presented has been focused on the development of a new python based software called JADE, whose objective is to give a significant help in increasing the level of automation and standardization of these procedures in order to reduce the time passing between new libraries releases and, at the same time, increasing their quality. After an introduction to nuclear fusion (which is the field where the majority of the V\&V action was concentrated for the time being) and to the simulation of particles and radiations transport, the motivations leading to JADE development are discussed. Subsequently, the code general architecture and the implemented benchmarks (both experimental and computational) are described. After that, the results coming from the major application of JADE during the research years are presented. At last, after a final discussion on the objective reached by JADE, the possible brief, mid and long time developments for the project are discussed.

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The genera Cochliomyia and Chrysomya contain both obligate and saprophagous flies, which allows the comparison of different feeding habits between closely related species. Among the different strategies for comparing these habits is the use of qPCR to investigate the expression levels of candidate genes involved in feeding behavior. To ensure an accurate measure of the levels of gene expression, it is necessary to normalize the amount of the target gene with the amount of a reference gene having a stable expression across the compared species. Since there is no universal gene that can be used as a reference in functional studies, candidate genes for qPCR data normalization were selected and validated in three Calliphoridae (Diptera) species, Cochliomyia hominivorax Coquerel, Cochliomyia macellaria Fabricius, and Chrysomya albiceps Wiedemann . The expression stability of six genes ( Actin, Gapdh, Rp49, Rps17, α -tubulin, and GstD1) was evaluated among species within the same life stage and between life stages within each species. The expression levels of Actin, Gapdh, and Rp49 were the most stable among the selected genes. These genes can be used as reliable reference genes for functional studies in Calliphoridae using similar experimental settings.

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The Structural Genomics Consortium (SGC) and its clinical, industry and disease-foundation partners are launching open-source preclinical translational medicine studies.