Integrating sophisticated statistical methods into database management systems is gaining more and more attention in research and industry. One important statistical method is time series forecasting, which is crucial for decision management in many domains. In this context, previous work addressed the processing of ad-hoc and recurring forecast queries. In contrast, we focus on subscription-based forecast queries that arise when an application (subscriber) continuously requires forecast values for further processing. Forecast queries exhibit the unique characteristic that the underlying forecast model is updated with each new actual value and better forecast values might be available. However, (re-)sending new forecast values to the subscriber for every new value is infeasible because this can cause significant overhead at the subscriber side. The subscriber therefore wishes to be notified only when forecast values have changed relevant to the application. In this paper, we reduce the costs of the subscriber by optimizing the notifications sent to the subscriber, i.e., by balancing the number of notifications and the notification length. We introduce a generic cost model to capture arbitrary subscriber cost functions and discuss different optimization approaches that reduce the subscriber costs while ensuring constrained forecast values deviations. Our experimental evaluation on real datasets shows the validity of our approach with low computational costs.

<p> The "B" horizon at Tilt Cove occurs in subaqueous mafic volcanics near the base of the Silurian Cape St. John Group. It is 3 metres below a well-banded oxide iron formation ("A" horizon). </p> <p> Mineralization in the "B" horizon is analogous to that of the East Mine in that it is volcanogenic and has resulted in extensive chloritization of the footwall rocks, and in the deposition of banded sulphides or the replacement of the existing mafic volcanics by sulphides. There are differences in the geochemistry mineral textures and mineral types. The East Mine host volcanics are alkali depleted basaltic komatiites to magnesium theleiites. The horizon host volcanics are spillitized magnesium tholeiites. Samples of ore from the East Mine show well-developed colloform and framboidal textures. Pyrite, magnetite, hematite and chalcopyrite are the dominant minerals with minor sphalerite and accessory covellite. Samples from the horizon show relict colloform textures and framboids with less internal structure due to overgrowths. Atoll textures indicating extensive replacement are common. Pyrite is the dominant sulphide followed by sphalerite, chalcopyrite, accessory covellite and gold. The chalcopyrite occurs both as replacement of pyrite and exsolution in sphalerite. The most significant difference between samples from the East Mine and "B" horizon is the greater abundance of gold in the "B" horizon and its correlation with sphalerite. </p> / Thesis / Bachelor of Science (BSc)

Introduktion: Omvärldsbevakning/analys är ett förekommande krav för organisationer som ett led i att tidigt identifiera omvärldens påverkan på den egna organisationen samt som underlagför att kunna fatta gynnsamma beslut. Det finns ingen allmängiltig definition eller vedertagen metod när det gäller omvärldsbevakning/analys i offentlig verksamhet. Omvärldsbevakning/analys utgör en komponent i det svenska krisberedskapssystemet och ett värde finns i att förstå arbetsprocessen och de faktorer som påverkar tillvägagångssättet. En viktig utgångspunkt för samhällets säkerhet och krisberedskap är risk – och sårbarhetsanalyser (RSA). En RSA är tänkt att utgöra grunden i arbetet med att identifiera hot och risker, minska sårbarheter och öka förmågan att förebygga, motstå och hantera kriser och extraordinära händelser. Samhällets snabba förändring, gör att potentiella risker och hot kan vara svåra att förutse. Att samhället dessutom i ökande omfattning bestå av komplexa beroendeförhållanden ökar utmaningen ytterligare. En del i arbete med RSA innebär att studera hur omvärlden påverkar eller möjligen kan påverka den egna verksamheten samt identifiera hot, vilket innebär att verksamheten behöver utöva någon form av kontinuerlig omvärldsbevakning. Genom att titta på processer med nära koppling till omvärldsbevakning/analys kan begreppen sättas i förhållande till samhällsviktig verksamhet och utveckla arbetet i dessa verksamheter.  Syfte: Utgångspunkten för studien är att beskriva regioners arbete med RSA utifrån delkomponenterna i verksamhetsteorin samt utifrån verksamhetsteorins olika perspektiv. Att använda verksamhetsteorin som en teoretisk ram innebär ett försök att spegla de faktorer som påverkar arbetet utifrån ett holistiskt perspektiv genom att belysa faktorer utifrån det teoretiska ramverkets olika delar. Studiens syfte är att därigenom få en förståelse för de faktorer som utgör hinder och skapar goda förutsättningar för arbetet med RSA och hur dessa faktorer samspelar med varandra. Dessutom syftar studien till att få en ökad förståelse för hur omvärldsbevakning och/eller omvärldsanalys nyttjas i arbetet med RSA.   Metod: Metoden baseras på semi-strukturerade intervjuer och genomförs med en deduktiv ansats. Resultat: Studiens resultat presenteras i förutbestämda teman utifrån verksamhetsteorins aktivitetssystem; Aktör, Verktyg, Regler, Gemenskap, Arbets- och ansvarsfördelning, Mål och Utfall.   Slutsatser: Hur arbete med RSA organiseras skiljer sig mellan regioner. En enighet som ses är att RSA främst syftar till att uppfylla egennyttan för regionen, i andra hand för att uppfylla lagkravet. De delkomponenter utifrån verksamhetsteorin som ses ha en betydande roll för arbetet med RSA är arbets- och ansvarsfördelning samt gemenskap. Dessa delkomponenter verkar framför allt utgöra de delkomponenter i verksamhetsteorins aktivitetssystem som påverkar förutsättningarna för samverkan, som anses utgöra den viktigaste faktorn för ett framgångsrikt arbete med RSA. Omvärldsbevakning/analys görs regelbundet som en del i medarbetares arbetsuppgifter. I det specifika arbetet med RSA verkar det utföras omvärldsbevakning/analys inom samtliga delar av processen genom samverkan. / Introduction: Horizon scanning is a common requirement for organizations as a part of the work to better anticipate future opportunities or threats and to identify issues in the present that are of major importance for the organisation. There is no clear definition or established method for horizon scanning in the public sector. Horizon scanning is a component of the Swedish crisis preparedness system and there is value in understanding the work and the factors influencing the approach. An important part of the crisis preparedness system involves risk- and vulnerability analysis (RVA). RVA is intended to form the basis for identifying threats and risks, reducing vulnerabilities and enhancing the capacity to prevent, withstand, and manage crises and extraordinary events. The rapid changes in society makes it difficult to predict potential risks and threats. In addition, the increasing complexity of interdependencies in society further aggravate the challenge. As a part of an RVA, studying how the external environment influences or may influence the organization's activities and identifying threats requires the organization to engage in some form of continuous horizon scanning. By examining processes closely related to horizon scanning, the concept can be related to vital societal functions and critical infrastructure and thereby develop work within these areas.  Purpose: The study aims to describe how county council conduct RVA based on the activity theory and the different perspectives within the theory. Using activity theory as a theoretical framework attempts to reflect key areas influencing the work from a holistic perspective. The purpose of the study is thus to gain an understanding of the areas influencing the work of RVA and how these interact with each other. Additionally, the study aims to enhance understanding of how horizon scanning is utilized in the work of RVA. Method: The method is based on semi-structured interviews conducted with a deductive approach.  Results: The result of the study's are presented in predetermined themes based on the activity system: Actor, Tools, Rules, Community, Division of Labor, Goals and Outcomes.  Conclusions: How county council conduct RVA differs. A common agreement is that RVA primarily serves the county council´s own interests, and compliance with legal requirements is secondary. The areas of activity theory that appear to have a significant role in the work of RVA are Division of labor and Community. These areas primarily seems to affect the conditions for collaboration, which is considered to be the most crucial factor to succeed in the work. Horizon scanning is performed regularly as part of employees' everyday tasks. In the work of RVA horizon scannning is performed within the different parts of the process, primarily throu collaboration.

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Syfte: Rapportens syfte är att kartlägga om upplevelsen av ett rum kan förändras beroende på om och vilka ljud som spelas upp i rummet.Metod: I samband med en ljudinstallation på Plattan vid Malmö Högskola har rörelsemönster och beteende för Plattans besökare observerats. Dessutom har flera besökare besvarat en enkät.Resultat: Inga eventuella förändringar i rörelsemönstret eller beteendet för Plattans besökare kan ses som en konsekvens av ljudinstallationen. Det finns inte heller någon skillnad i enkätsvaren beroende på installationen. Slutsats: Resultatet ses som en konsekvens av bristfälliga forskningsmetoder. I rapportens slutsats bildas hypotesen att en installerad ljuddesign inte är en tillräcklig åtgärd i den undersökta typen av miljö. Tesen menar att en förändring av ljudmiljön och påverkan på människors upplevelse av rummet i första hand kräver akustiska åtgärder.

A field survey was conducted following the Deepwater Horizon blowout and it was noted that resulting coastal petroleum deposits possessed distinct geometries, ranging from small tar balls to expansive horizontal oil sheets. A laboratory study evaluated the effect of oil deposit geometry on localized gradients of electron acceptors and microbial community composition, factors that are critical to accurately estimating biodegradation rates. One-dimensional top-flow sand columns with 12-hour simulated tidal cycles compared two contrasting geometries (isolated tar "balls" versus horizontal "sheets") relative to an oil-free control. Significant differences in the effluent dissolved oxygen and sulfate concentrations were noted among the columns, indicating presence of anaerobic zones in the oiled columns, particularly in the sheet condition. Furthermore, quantification of genetic markers of electron acceptor and catabolic conditions via quantitative polymerase chain reaction of dsrA (sulfate-reduction), mcrA (methanogenesis), and cat23 (oxygenation of aromatics) genes in column cores suggested more extensive anaerobic conditions induced by the sheet relative to the ball geometry. Denaturing gradient gel electrophoresis similarly revealed that distinct gradients of bacterial communities established in response to the different geometries. Thus, petroleum deposit geometry impacts local redox and microbial characteristics and may be a key factor for advancing attenuation models and prioritizing cleanup. / Master of Science

In this paper, I explore the emerging genre of Ecotopian fiction, which envisions alternative societal structures through an environmental or ecological lens. Examining two seminal works, Kim Stanley Robinson's Ministry for the Future (2020) and Ernest Callenbach's Ecotopia (1975), I investigate how these ecotopian narratives contribute to progressive ideologies on resource management, shedding light on the environmental requirements of utopia. Applying Darko Suvin's methodology to analyse the utopian framework in both novels, my reading of the works demonstrates that Callenbach's Ecotopia offers a confined utopian vision while Ministry for the Future employs a narrative approach that encompasses multiple possible utopian horizons. This adaptation of the Ecotopian framework serves to reimagine and reassess our strategies for addressing climate challenges within the complexities of the global economy. My argument draws from Booker and Daraiseh reading of Ministry for the Future which posits that the dialogic elements within Robinson's work foster reader engagement, prompting consideration of diverse perspectives and possibilities. Moreover, the polyphony of narrators in the Ministry for the Future facilitates a detachment of climate resolutions from Western-centric perspectives and from the perspective of one person - an imperative step towards the necessary global system change. As agents shaping potential worlds, ecotopian writers must articulate new economic systems in a manner that resonates with readers, fostering integration of these concepts into the collective consciousness. I contend that, to endure impending challenges, it is essential to continue developing the ecotopian horizon, exploring variations on ecological economies and that is best done through a multi-voiced approach. This ongoing effort is crucial to ensure the survival of future generations, empowering them to contribute to their own narratives of ecotopia.

Notre étude relève d’une analyse exploratoire fondée sur une étude de cas. En partant d’un exemple de débat articulé autour d’un enjeu public, en l’occurrence la responsabilité sociale d’entreprise (RSE), nous appréhendons le discours comme un instrument de pouvoir déployé par des acteurs en position conflictuelle. Nous prenons comme un cas d’étude la crise écologique provoquée par British Petroleum (BP) au large du Golfe de Mexique le 20 avril 2010. Pour sélectionner notre corpus, nous avons désigné deux populations cibles de discours, en l’occurrence le discours tenu par le gouvernement américain (discours d’Obama) et le discours représentant l’avis officiel de BP (communiqués de presse de BP). Nous avons analysé les discours publics d’Obama et de BP datant du 20 avril 2010 jusqu’au 19 septembre 2010. Nous avons considéré tout discours produit dans un contexte conflictuel travaillé par une crise comme un instrument porteur symboliquement des signes de pouvoir et mobilisant des rapports de force entre les acteurs impliqués. Nous partons de l’hypothèse suivante : les discours organisationnel et gouvernemental étudiés et produits dans un contexte de crise, sont forcément des discours conflictuels au sens de Windisch (1987). Et nous avons utilisé la grille d’analyse élaborée par Windisch (1987) pour mettre en exergue le fonctionnement interne d’un discours conflictuel envisagé comme un vecteur du pouvoir et de légitimation. Nous avons précédé l’analyse de discours, méthode principale dans notre étude, par une analyse de contenu qualitative. Le recours à l’analyse de contenu se justifie par notre souci de déterminer les divers thèmes développés dans le discours, d’examiner comment les acteurs imprègnent de sens le thème de la RSE et de poser le corpus dans sa réalité propre, en ayant recours au logiciel d’analyse de contenu qualitative HYPERRESEARCH. En outre, en mobilisant les présupposés théoriques et les outils méthodologiques issus de l’analyse de discours, nous avons ausculté le potentiel performatif légitimateur des discours construits et élaborés dans un contexte de communication conflictuelle. Pour ce faire, nous avons utilisé le logiciel d’analyse textuelle TROPES reconnu comme un outil d’analyse textuelle capable de générer des modèles représentatifs de la structure du corpus et de son organisation thématique. NOTIONS-CLÉS Discours conflictuel, stratégies discursives, RSE, légitimité, pouvoir, tandem État/firme. / Our study is intended to be an exploratory analysis based on a case study. Starting from a sample debate articulated around a public issue, namely the corporate social responsibility (CSR), we apprehend the discourse as an instrument of power deployed by actors in a conflict position. We take the ecological crisis caused by British Petroleum (BP) in the Gulf of Mexico since April 20, 2010 as a case study, and the reaction of the U.S. administration to intervene and reassure the public opinion alarmed by this crisis. In order to select our corpus, we have identified two target populations of discourse, in this case the speech given by the U.S. government (Obama's speech) and discourses representing the official opinion of BP (BP's press releases) dated April 20, 2010 until September 19, 2010. We considered any discourse occurring in a context of conflict symbolically as a power signs carrier and a mobilizing instrument of power relations between the involved actors. We start from the hypothesis stating that organizational and governmental discourses, studied and produced in a crisis context, are necessarily conflictual discourses within the meaning of Windisch (1987). And we used the analytical framework developed by Windisch (1987) to highlight the internal functioning of a confrontational speech seen as a vector of power and legitimacy. In our research, we preceded the discourse analysis, the main method in our study, by a qualitative content analysis. The use of content analysis aims to determine the various themes developed in the discourse, examine how actors define the CSR topic and put the corpus in its own reality, by using the HYPERRESEARCH qualitative content analysis software. In addition, by implementing the theoretical assumptions and methodological tools from discourse analysis, we auscultated the performative legitimating potential of discourses constructed and developed in a conflict communication context. We used the TROPES text analysis software recognized as a textual analysis tool able to generate representative models of the corpus structure and its thematic organization. KEY CONCEPTS Confrontational discourse, discursive strategies, CSR, legitimacy, power, tandem of government and enterprise.

S’intéressant aux différents rôles du son dans les jeux vidéo d’horreur, ce mémoire vise à exposer le travail cognitif effectué par le joueur lors de son activité de jeu. De la structuration des sons jusqu’à la production de sens à partir de leurs fonctions, cette recherche mesure l’implication du phénomène sonore dans la mise en scène de la peur vidéoludique. Dans cette optique, elle présente, critique et développe une pluralité de concepts portant sur la jouabilité, les postures d’écoute, la diégèse, les générateurs sonores, les fonctions sonores systémiques et immersives ainsi que sur la création de la peur à l’aide de différentes stratégies sonores. / Focusing on the different roles of sound in horror videogames, this master thesis aims to expose the cognitive process of a gamer during his gameplay activity. From the structure of the soundscape to the production of meaning through the sound’s functions, this research measures the implication of audio in the creation of a mise en scène of videoludic fear. As a means to do so, it presents, evaluates and develops a plurality of concepts about gameplay, modes of listening, diegesis, sound generators, systemic and immersive audio functions, and the building of fear with different sound strategies.

Les Moments ont été largement utilisés dans la reconnaissance de formes et dans le traitement d'image. Dans cette thèse, nous concentrons notre attention sur les 3D moments orthogonaux de Gauss-Hermite, les moments invariants 2D et 3D de Gauss-Hermite, l'algorithme rapide de l'attribut de cohérence et les applications de l'interprétation sismique en utilisant la méthode des moments.Nous étudions les méthodes de suivi automatique d'horizon sismique à partir de moments de Gauss-Hermite en cas de 1D et de 3D. Nous introduisons une approche basée sur une étude multi-échelle des moments invariants. Les résultats expérimentaux montrent que la méthode des moments 3D de Gauss-Hermite est plus performante que les autres algorithmes populaires.Nous avons également abordé l'analyse des faciès sismiques basée sur les caractéristiques du vecteur à partir des moments 3D de Gauss -Hermite, et la méthode de Cartes Auto-organisatrices avec techniques de visualisation de données. L'excellent résultat de l'analyse des faciès montre que l'environnement intégré donne une meilleure performance dans l'interprétation de la structure des clusters.Enfin, nous introduisons le traitement parallèle et la visualisation de volume. En profitant des nouvelles performances par les technologies multi-threading et multi-cœurs dans le traitement et l'interprétation de données sismiques, nous calculons efficacement des attributs sismiques et nous suivons l'horizon. Nous discutons également l'algorithme de rendu de volume basé sur le moteur Open-Scene-Graph qui permet de mieux comprendre la structure de données sismiques. / Moments have been extensively used in pattern recognition and image processing. In this thesis, we focus our attention on the study of 3D orthogonal Gaussian-Hermite moments, 2D and 3D Gaussian-Hermite moment invariants, fast algorithm of coherency attribute, and applications of seismic interpretation using moments methodology.We conduct seismic horizon auto-tracking methods from Gaussian-Hermite moments and moment invariants. We introduce multi-scale moment invariants approach. The experimental results show that method of 3D Gaussian-Hermite moments performs better than the most popular methods.We also approach seismic facies analysis based on feature vectors from 3D Gaussian-Hermite moments, and Self-Organizing Maps method with data visualization techniques. The excellent result shows that the integrated environment gives the best performance in interpreting the correct cluster structure.Finally, we introduce the parallel processing and volume visualization. Taking advantage of new performances by multi-threading and multi-cores technologies into seismic interpretation, we efficiently compute the seismic attributes and track the horizon. We also discuss volume rendering algorithm based on Open-Scene-Graph engine which provides better insight into the structure of seismic data.