This project was designed to help Hi3G Access AB’s IT department to get a better overview of the testing state in the different cross functional teams. Furthermore it was designed to identify teams and system where regression tests had the potential and the need of being automated. This information was gathered by conducting a survey designed for all the software testers at the company, followed by performing semi-structured interviews with one tester from each team. For the most suitable system and test case, an automation solution prototype was created with an automation tool using an agile test automation process model. The automation tool was evaluated regarding complexity, userfriendliness, available documentation and performance. The team and the system decided to be most prioritized and suitable was the team that worked with the Enterprise resource planning (ERP) system. The automation tool used for the prototype was Oracle applications testing suite (OATS). The project revealed that many teams at Hi3G Access AB were quite far in the automation process. The tool evaluated in the project presented itself to be straightforward and easy to learn/use. However the tool was missing a widespread discussion board and also lacked free support. / Projektet var utformat för att hjälpa Hi3G Access ABs IT-avdelning få en bättre överblick gällande de olika korsfunktionella gruppers testsituation. Vidare var målet att identifiera team och system där regressionstester hade potential och behov av automatisering. Denna information samlades in genom att utföra en enkät avsedd för alla mjukvarutestare på företaget, följt av att utföra semistrukturerade intervjuer med en testare från varje team.För det mest lämpliga system och testfall skapades en automatiserad prototyplösning genom en agil testautomatiseringsmodell. Automatiseringsverktyget utvärderas gällande komplexitet, användarvänlighet, tillgänglig dokumentation och prestanda.Teamet och systemet som valdes som mest prioriterat och lämpligt var teamet som arbetade med Enterprise resource planning (ERP) systemet. Automatiseringsverktyget som användes för prototypen var Oracle Applications Testing Suite (OATS).Projektet visade att många team på Hi3G Access AB hade kommit ganska långt i automatiseringsprocessen. Verktyget som utvärderades visade sig vara okomplicerat och lätt att både lära sig och att använda. Däremot så var avsaknaden av ett utbrett diskussionsforum ett faktum samt att produkten saknade fri support.

Dans le cadre du dépôt légal de la télévision, nous proposons une méthode de structuration automatique des flux télévisuels afin de procéder au catalogage des émissions.<br />La stabilité des grilles de programmes nous permet d'en proposer une modélisation statistique basée sur un modèle de Markov contextuel et un arbre de régression. Entraîné sur les grilles de programmes des années précédentes, ce modèle permet de pallier l'imprécision des guides de programmes (EPG, magazines). En rapprochant ces deux sources d'informations, nous sommes en mesure de prédire les séquences d'émissions les plus probables pour un jour de l'année et d'encadrer la durée des émissions.<br />A partir de ces grilles de programmes prédites et d'un ensemble de règles indiquant les éléments<br />caractéristiques d'une transition entre deux genres de programmes (images monochromes, silences ou logos), nous sommes en mesure de localiser ces ruptures à l'aide de d´etections effectuées localement dans le flux.

L'objectif de cette thèse est d'apporter un éclairage sur l'efficacité des politiques publiques sur le marché du travail. Dans les deux premiers chapitres, nous proposons des évaluations empiriques de deux politiques publiques sur le marché du travail français: * le CV anonyme: le bloc état-civil est supprimé du CV (premier chapitre). L'anonymisation réduit les écarts d'accès aux entretiens entre les femmes et les hommes. Cet effet limité aux offres d'emploi pour lequelles à la fois des hommes et des femmes postulent semble se prolonger aux phases ultérieures du recrutement, jusqu'à l'embauche; * générosité de l'assurance chômage : une augmentation de 8 mois de durée maximale d'assurance chômage n'affecte pas la qualité de l'emploi trouvé, même si elle ralentit le retour à l'emploi (second chapitre). Ces évaluations s'appuient sur des données expérimentales ou quasi expérimentales permettant l'identification de causalité. A cet effet, nous comparons un groupe traité et un groupe de contrôle qui sont statistiquement identiques avant la mise en place du traitement. Ce cadre d'analyse n'est pour autant pas exempt de difficultés méthodologiques. Dans les deux derniers chapitres, nous abordons deux difficultés méthodologiques des évaluations micro économétriques des programmes d'assistance aux chômeurs: * comparabilité ex post des groupes traité et témoin en présence d'attrition différenciée entre groupes expérimentaux (troisième chapitre) ; * effets d'équilibre affectant le groupe témoin (quatrième chapitre).

The following study presents an experimental and computational investigation on the effects of implementing a dual cavity slashface configuration and varying slashface coolant leakage mass flow rate on the thermal performance for a 1st stage nozzle guide vane axisymmetric converging endwall. An upstream doublet staggered cylindrical hole jet cooling scheme provides additional purged coolant with consistent conditions throughout the investigation. The effects are measured in engine representative transonic mainstream and coolant flow conditions where Mexit = 0.85, Reexit = 1.5 × 106, freestream turbulence intensity of 16%, and a coolant density ratio of 1.95. Four combinations of slashface Fwd and Aft cavity mass flow rate are experimentally analyzed by comparing key convective heat transfer parameters. Data is collected and reduced using a combination of IR thermography and a linear regression technique to map endwall heat transfer performance throughout the passage. A flow visualization study is employed using 100 cSt oil-based paint to gather qualitative insights into the endwall flow field. A complimentary CFD study is carried out to gather additional understanding of the endwall flow ingestion and egression behavior as well as comparing performance against a conventional cavity configuration. Experimental comparisons indicate slashface mass flow rate variations have a minor effect on passage film cooling coverage. Instead, coolant coverage across the passage is primarily driven by upstream purge coolant. However, endwall heat transfer coefficient is reduced as much as 20% in mid-passage areas as leakage flow decreases. This suggests that changes in leakage flow maintains a first order correlation in altering passage aerodynamics that, despite relatively consistent film cooling coverage, also leads to significant changes in net heat flux reduction in the passage. Endwall flow behavior proves to be complex along the gap interface showing signs of ingestion, egression, and tangential flow varying spatially throughout the gap. CFD comparisons suggests that a dual cavity configuration varies the gap static pressure distribution closer to the mainstream pressure throughout the passage in high speed applications compared to a single cavity configuration. The resulting decelerating flow creates a more stable endwall flow profile and favorable coolant environment by reducing boundary layer thinning and shear interaction in near gap endwall tangential flow. / Master of Science / Gas turbines are often exposed to high temperatures as they convert hot, energetic gas streams into mechanical motion. As turbines receive higher temperature gases, their efficiency increases and reduces waste. However, these temperatures can get too hot for turbine parts. To survive these high temperatures, turbine components are often assembled with a gap in between to allow the part to expand and contrast when it heats and cools. Relatively cold air is also fed into the gap to help prevent hot gases from entering. This cold air can also feed into other pathways to flow onto the turbine component's surface and act as an insulating layer to the hot gas and protect the component from overheating. The study presented investigates an assembly gap, referred to as a slashface gap, found in the middle of a vane located immediately after gas combustion with cold air leaking through. One unique aspect of this study is that there are two pathways for cold air, or coolant, to leak through when, typically, there is only one. The slashface gap lies on a wall which the vanes are attached to, referred to as the endwall. Multiple small holes on the endwall in between the combustor and vanes jet out coolant to try and protect the endwall from hot gases. These holes, called jump cooling holes, point out towards the vanes and angled more shallowly so that the holes do not face directly up from the endwall. The holes are angled as they are meant to gracefully spray coolant to cover and insulate the endwall instead of mixing with the hot air above. The experiments found that changing how much coolant is leaked through the slashface has little effect on how much coolant from jump cooling holes covered the endwall. However, smaller slashface leaks better protect the endwall from the hot gas by forcing it to move smoother and give off less heat across the endwall rather than a tumbling like manner. The experiment is modeled on a computer simulation to determine the differences of a slashface gap with the typical one coolant pathway and the coolant dual pathway configuration that is tested in the experiments. This simulation discovered that having two coolant pathways significantly reduces how much hot gas and jump cooling coolant enters and leaves the slashface gap. This makes the surrounding airflow along the endwall travel more smoothly and does not give off as much heat as if a single coolant pathway configuration is used instead.