Information in a data warehouse is stored in materialized views, which must be kept consistent with respect to changes made in the sources. This problem has been extensively studied in the relational model. The process is referred to as view maintenance. XML is emerging as the de facto standard for data representation and data exchange of semistructured data. Most discussions involving XML assume the XML data is stored in plain text files. However, there are a number of different approaches for storing XML data, which can be categorized according to the underlying system used. Views and materialized views can also be specified in XML. This dissertation investigates how view maintenance in an XML context is influenced by the utilized approach for storage. We survey existing storage strategies using a relational database as the underlying system for storage, and storage strategies using plain text files. Further, we survey approaches for maintenance in the context of XML. We investigate three selected storage strategies in detail. We conclude with some insights gained during the investigation.

This thesis explores the perspectives of people on psychogenic non-epileptic seizures (PNES). It is presented in three separate papers: a systematic literature review; an empirical research paper and a critical reflection of the research process as a whole. The systematic literature review aimed to provide a detailed understanding of stakeholder perspectives on PNES. A systematic search identified relevant studies that were subsequently synthesised using thematic analysis and the broader principles of narrative synthesis. Three broad themes relating to stakeholder perspectives were identified: the nature of PNES as a condition; diagnosis; and management and treatment issues. It was found that both patients and professionals experienced uncertainties in relation to understanding and managing the condition. This highlighted the need for further information and awareness of PNES and the development of clear treatment guidelines. Important differences in opinion were also identified between patients and professionals and consideration was given to how these may disrupt the development of effective partnerships in care. The research into patients' and families' perspectives was found to be lacking and further research was identified as being needed in this area. The empirical paper reports an exploratory qualitative study that aimed to provide an in-depth understanding of the perceived treatment needs of patients with PNES. Semi-structured interviews were conducted and findings were analysed inductively using the principles of thematic analysis. Four key themes were identified: return to normality; post-diagnostic limbo; uncertainty and apprehension about therapy; and need for validation. Patients with PNES described clear goals for their recovery and clear ideas about their treatment needs. However, following their diagnosis, many felt caught in 'limbo' due to uncertainties about their diagnosis and as a result of a lack of post-diagnostic support. Being in 'limbo' also linked to patients' uncertainties about psychology meeting their needs and for some there was apprehension about the potential negative consequences of therapy. The clinical implications of the research are discussed and recommendations for future research are made. The third paper is a critical reflection of the research process as a whole. It provides an overview and evaluation of the first two papers and personal reflections of the lead researcher are offered throughout. Implications for further research and clinical practice are offered and a summary of the research as a whole is offered.

Doctorat en philosophie et lettres / info:eu-repo/semantics/nonPublished

L'apparition du phénomène Big-Data, a conduit à l'arrivée de nouvelles besoins croissants et urgents de partage de données qui a engendré un grand nombre de requêtes que les SGBD doivent gérer. Ce problème a été aggravé par d 'autres besoins de recommandation et d 'exploration des requêtes. Vu que le traitement de données est toujours possible grâce aux solutions liées à l'optimisation de requêtes, la conception physique et l'architecture de déploiement, où ces solutions sont des résultats de problèmes combinatoires basés sur les requêtes, il est indispensable de revoir les méthodes traditionnelles pour répondre aux nouvelles besoins de passage à l'échelle. Cette thèse s'intéresse à ce problème de nombreuses requêtes et propose une approche, implémentée par un Framework appelé Big-Quereis, qui passe à l'échelle et basée sur le hypergraph, une structure de données flexible qui a une grande puissance de modélisation et permet des formulations précises de nombreux problèmes d•combinatoire informatique. Cette approche est. le fruit. de collaboration avec l'entreprise Mentor Graphies. Elle vise à capturer l'interaction de requêtes dans un plan unifié de requêtes et utiliser des algorithmes de partitionnement pour assurer le passage à l'échelle et avoir des structures d'optimisation optimales (vues matérialisées et partitionnement de données). Ce plan unifié est. utilisé dans la phase de déploiement des entrepôts de données parallèles, par le partitionnement de données en fragments et l'allocation de ces fragments dans les noeuds de calcule correspondants. Une étude expérimentale intensive a montré l'intérêt de notre approche en termes de passage à l'échelle des algorithmes et de réduction de temps de réponse de requêtes. / The emergence of the phenomenon Big-Data conducts to the introduction of new increased and urgent needs to share data between users and communities, which has engender a large number of queries that DBMS must handle. This problem has been compounded by other needs of recommendation and exploration of queries. Since data processing is still possible through solutions of query optimization, physical design and deployment architectures, in which these solutions are the results of combinatorial problems based on queries, it is essential to review traditional methods to respond to new needs of scalability. This thesis focuses on the problem of numerous queries and proposes a scalable approach implemented on framework called Big-queries and based on the hypergraph, a flexible data structure, which bas a larger modeling power and may allow accurate formulation of many problems of combinatorial scientific computing. This approach is the result of collaboration with the company Mentor Graphies. It aims to capture the queries interaction in an unified query plan and to use partitioning algorithms to ensure scalability and to optimal optimization structures (materialized views and data partitioning). Also, the unified plan is used in the deploymemt phase of parallel data warehouses, by allowing data partitioning in fragments and allocating these fragments in the correspond processing nodes. Intensive experimental study sbowed the interest of our approach in terms of scaling algorithms and minimization of query response time.

Le processus de conception des BD ne cesse d'augmenter en complexité et d'exiger plus de temps et de ressources afin de contenir la diversité des applications BD. Rappelons qu’il se base essentiellement sur le talent et les connaissances des concepteurs. Ces bases s'avèrent de plus en plus insuffisantes face à la croissante diversité de choix de conception, en soulevant le problème de la fiabilité et de l'exhaustivité de cette connaissance. Ce problème est bien connu sous le nom de la gestion de la variabilité en génie logiciel. S’il existe quelques travaux de gestion de variabilité portant sur les phases physique et conceptuelle, peu se sont intéressés à la phase logique. De plus, ces travaux abordent les phases de conception de manière séparée, ignorant ainsi les différentes interdépendances.Dans cette thèse, nous présentons d'abord la démarche à suivre afin d'adopter la technique des lignes de produits et ce sur l'ensemble du processus de conception afin de (i) considérer les interdépendances entre les phases, (ii) offrir une vision globale au concepteur, et (iii) augmenter l'automatisation. Vu l'étendue de la question, nous procédons par étapes dans la réalisation de cette vision, en consacrant cette thèse à l'étude d'un cas choisi de façon à montrer : (i) l'importance de la variabilité de la conception logique, (ii) comment la gérer en offrant aux concepteurs l'exhaustivité des choix, et la fiabilité de la sélection, (iii) son impact sur la conception physique (gestion multiphase),(iv) l'évaluation de la conception logique, et de l'impact de la variabilité logique sur la conception physique (sélection des vues matérialisées) en termes des besoins non fonctionnel(s) :temps d'exécution, consommation d'énergie voire l'espace de stockage. / The evolution of computer technology has strongly impacted the database design process which is henceforth requiring more time and resources to encompass the diversity of DB applications.Note that designers rely on their talent and knowledge, which have proven insufficient to face the increasing diversity of design choices, raising the problem of the reliability and completeness of this knowledge. This problem is well known as variability management in software engineering. While there exist some works on managing variability of physical and conceptual phases, very few have focused on logical design. Moreover, these works focus on design phases separately, thus ignore the different interdependencies. In this thesis, we first present a methodology to manage the variability of the whole DB design process using the technique of software product lines, so that (i)interdependencies between design phases can be considered, (ii) a holistic vision is provided to the designer and (iii) process automation is increased. Given the scope of the study, we proceed step-bystepin implementing this vision, by studying a case that shows: (i) the importance of logical design variability (iii) its impact on physical design (multi-phase management), (iv) the evaluation of logical design, and the impact of logical variability on the physical design (materialized view selection) in terms of non-functional requirements: execution time, energy consumption and storage space.

Das Planen und Entwickeln eines optimalen Data Warehouse-Systems ist ein Ansinnen vieler Wissenschaftler und Forscher aus unterschiedlichen Bereichen. Zahlreiche Publikationen wurden zu diesem Thema verfasst und in den letzten Jahren veröffentlicht. In dieser Literatur wird versucht eine Heuristik zu entwickeln, welche eine Lösung nahe am Optimum für das Materialisierungsproblem im Data Warehouse liefert. In der Vergangenheit wurden in zahlreichen Publikationen Annahmen, wie unbegrenzte Ressourcen oder rasche Zugriffszeit getroffen, welche in der realen Welt allerdings nicht vorhanden sind. Die Vision, welche hinter dieser Arbeit steckt, ist es, ein Instrument zu entwickeln, welches diese limitierenden Faktoren mitberücksichtigt, bzw. dieses versucht. Dabei hat sich insbesondere die Modellierungsmethode des Aggregation Path Arrays von Prosser und Ossimitz als geeignet erwiesen, in diesem Problembereich einen Lösungsansatz zu finden. Vor allem ist diese Methode durch die einfache graphische Darstellungsfähigkeit besonders für informationstechnische Darstellung geeignet. Dabei ist es auch unerfahrenen Endbenutzer möglich, das Design eines Warehouses zu bewerkstelligen. Aus diesem Grund ist die Methode auch für Schulungs- und Ausbildungszwecke besonders geeignet. Die kostenminimale physische Bereitstellung der wichtigen Informationen für die Entscheidungsträger in Unternehmen stellt das Ziel dieser Arbeit dar. Dabei ist ein Optimierungsproblem zu lösen, welches limitierende Zeit- und Speicherressourcen bei gleichzeitigem Berücksichtigen wichtiger Information beachtet. Leider ist diese Information nicht immer als homogen anzusehen. Es gibt beispielsweise wichtige Information, welche für das Überleben einer Organisation notwendig ist und Information, welche wichtig, aber nicht ständig verfügbar sein muss. Der Versuch einen Lösungsansatz für diese Problematik zu finden, stellt das Herzstück meiner Arbeit dar. (Autorenref.)

The dissertation provides an in-depth analysis of Swedes’ perceptions about vacations during the period of 1938 to 1959. The aim is to contribute to a more thorough understanding of vacation-related consumption, which in Sweden was of growing economic importance from the 1930s and onwards. The study examines perceptions about the relationship between vacation and work; the experience with nature; interactions with family members and other social relations; relaxation and rest, and the act of travelling. The dissertation also analyzes the adoption of the first Holiday with Pay Act in 1938 and examines how people vacationed during the period. Throughout the study class and gender are used as analytical categories. The principal source material is autobiographical recollections, which consist of written replies to questionnaires sent out by the Nordic Museum. Other sources include materials related to the introduction of the Holiday with Pay Act, mainly the Swedish Government Official Report and the parliamentary debate. Representations of vacations in magazine advertisements are also analyzed. Equalization between classes was an important reason for the adoption of the Holiday with Pay Act in 1938. Proponents of the legislation in parliament and, to some extent even the opponents, viewed equalization as a positive outcome of the reform. As a result of the legislation, blue-collar workers, both women and men, were able to enjoy vacations to a greater extent than before. However, large groups, mainly farmers, entrepreneurs, and housewives, continued to lack entitlement to paid vacations, a fact that were debated in parliament. Nevertheless, persons without legal entitlement to paid vacations still occasionally took time off and went on vacations. It was relatively common to travel during the vacation, even at the beginning of the period. The desire to experience a contrast to everyday life was prominent. People desired contrast not only with work but also with everyday life outside of work, including regular leisure time, something that is particularly evident in the autobiographical recollections. In one form or another, the desire for contrast permeated views on the various factors examined in the dissertation. Travel represented an ideal way to experience contrast. Nature was more interesting if it was located somewhere else, relaxation and rest was best achieved if one went away, and meeting new people was seen as more exciting than spending time with family. Overall perceptions concerning vacation were similar among blue-collar and white-collar workers of both sexes, as well as among housewives, farmers, and entrepreneurs. They all wanted to experience a contrast to everyday life. On a more detailed level, though, these desires took somewhat different forms depending on working conditions and economic circumstances. These common perceptions had economic significance, as going away meant more purchases than staying at home. It was not just a matter of spending what was required for the trip to happen. Travel and the desire for contrast had amplifying effects on other vacation-related consumption as well. An English summary of the dissertation is provided. / I centrum för avhandlingen står en analys av semesteruppfattningar år 1938–1959. Syftet är att på så sätt bidra till en mer ingående förståelse av semesterkonsumtionen, som fick en allt större ekonomisk betydelse från 1930-talet och framåt. Aspekter som undersöks närmare är uppfattningar om semester i relation till arbete, naturuppsyn, uppfattningar om familj och andra sociala relationer, uppfattningar om vila samt uppfattningar om resande. Vid sidan om den fördjupande analysen av uppfattningar studeras även införandet av semesterlagen 1938 och det konkreta semesterfirandet under perioden. Genus och klass utgör analytiska kategorier genom hela avhandlingen. Huvudmaterial är så kallade frågelistsvar. Dessa är självbiografiska minnen nedskrivna av informanter som svar på en frågelista Nordiska museet skickat ut. Dessutom används material med anknytning till semesterlagstiftningens införande, främst semesterutredning och riksdagsprotokoll, samt semesterrelaterade annonser i veckotidningarna Husmodern och Lektyr. När riksdagen fattade beslut om semesterlagen 1938 var ett viktigt motiv att man ville utjämna skillnader mellan klasserna. Både de som var positiva till reformen och de som var negativa till reformen såg klassutjämning som ett positivt resultat av den. Fler arbetare, både kvinnor och män, fick nu också semester. Samtidigt fanns stora grupper, främst jordbrukare och företagare av båda könen samt hemarbetande hustrur, vilka inte hade några semesterrättigheter alls, något som också debatterades i riksdagen. Det hände dock att kvinnor och män utan semesterrättigheter ändå tog ledigt på egen bekostnad. Det var relativt vanligt att resa iväg på semestern, även i början av perioden. I frågelistsvaren syns en stark uppskattning av att få uppleva en kontrast till vardagen. Ett liknande synsätt kom till uttryck i utredningen, i riksdagsdebatten och i de semesterrelaterade annonserna. Avhandlingen visar att informanterna ville uppleva en kontrast både till arbete och till övrig vardagsfritid. Synsättet präglade semesteruppfattningarna gällande alla aspekter som studerats närmare. Naturen sågs som mer intressant om den var belägen någon annanstans än hemmavid, vila och avkoppling ansågs bäst kunna uppnås om man reste iväg någonstans och semesterfirarna uppskattade att göra nya bekantskaper medan familjen snarare togs för given. Genom att resa iväg på semestern kunde informanterna uppfylla önskemålet om att få uppleva kontrast till hela sin vardag. Avhandlingen visar att semesteruppfattningarna på en övergripande nivå var lika bland arbetare, tjänstemän, hemarbetande hustrur, lantbrukare och företagare. På en mer detaljerade nivå kunde önskemålet att få uppleva en kontrast till vardagen ta sig något olika uttryck beroende på semesterfirarens arbetsförhållanden och ekonomiska situation. Avhandlingen visar dessutom att uppfattningarna hade ekonomisk betydelse, då resor innebar att informanterna gjorde fler inköp än då de stannade hemma. Det handlade inte enbart om sådan konsumtion som krävdes för att resan skulle bli av, utan även andra typer av inköp var större i samband med en resa än vid en hemmavistelse.

The aim for this essay is to examine the knowledge among parents to students, from grade 9 of upper level lower secondary school, about what is assessed in the school subject physical education. This is done by distributing a postal questionnaire to 89 parents. 42 of them chose to take part in the survey and the results show that parents are having different opinions about assessment and what the base is for assessment in the school subject physical education. When looking at the result of the study from a gender perspective it shows that the women rate their knowledge about the base for assessment higher than the men. The parents were also asked to rank what they think is the most essential part when it comes to assessment. The result shows that both women and men think it is the active participation of the pupil during lessons. When the parents rank which element of the school subject physical education is most and least important, when it comes to assessment, the result shows that dance is seen as one of the less important elements. The results of the study can overall be seen as quite fragmented. One explanation concerning the fragmented results could be the question about what knowledge really is in the school subject physical education.

Current scholarship in translation pedagogy calls for a paradigm shift towards a learner-centered and socio-constructivist approach to translator education. This view is founded on translating as a socially situated act of intercultural communication anchored in socio-cognitive abilities, and translation learning as multi-componential and sequential. Instruction in translation is thus seen to benefit from process- rather than product-oriented teaching and a focus on learners' textual and discursive competence. In spite of significant progress over the last decade the empirical basis of translation teaching theory and methods remains scant. A lack of attention to the "human factor" in translator education research (students and educators, in favor of processes, content and activities) is particularly conspicuous (Kelly 2008). As the field of translation pedagogy consolidates with ever more refined frameworks that pull teaching designs away from teacher- and text-centered classes to become more learner and learning/teaching-based, little is known about the nature of translation pedagogy ‘on the ground’ in diverse locations of the globe: by whom and how is translation taught, under what constraints, and to what effects. This qualitative study is grounded in second language (L2) teacher cognition research (e.g. Borg 2006, Phipps and Borg 2009), representations of translation as 'inquiry' (Sakai 2010, Cronin 2000, 2003, Venuti 2016) and recent socio-constructivist and sequenced and process-focused translation teaching approaches (Kiraly 2000, Colina 2003, 2015, Hurtado Albir 1999, González Davies 2004, Kelly 2005). From these frameworks, it examines the professional biographies, knowledge base, beliefs and practices of Chilean translation instructors at three different universities, as well as the views and experiences of approximately 50 of these instructors' students regarding their understanding and experiences of translation and instruction in the classroom. Additionally, in order to contribute to the developing 'rapprochement' between translation studies and second language education, findings on the strengths and challenges of undergraduate translation pedagogy derived from these two studies are discussed in a third article in light of the contributions from socio-culturally-oriented L2 education research, particularly multiliteracies approaches to FL teaching (Kern 2000, Byrnes 2005, 2006, Maxim 2009, Kramsch 2011, 2006, Paesani et al. 2015, Swaffar and Arens 2005).

It would indeed have been a difficult matter for anybody possessing a taste for self-expression, a facility with words and an insatiable imagination to avoid becoming involved in political controversy in England during the early part of the Eighteenth Century. For one who, in addition, was confident in his ability to solve problems of state of whatever complexity it was clearly an impossibility. Daniel Defoe's close connection with politics during the first years of the Eighteenth Century involved him in numerous hardships. In later years it brought him much less fame than his excursions into fiction; but it was the means of providing him, albeit sparsely at times, with sufficient money to keep his creditors at bay. On more than one occasion the protection he gained helped to rescue him from imprisonment. Intro., p. 1.