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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Ontology view : a new sub-ontology extraction method / Vista de ontologia : um novo metodo para extrair uma sub-ontologia

Aparicio, Jose Martin Lozano January 2015 (has links)
Hoje em dia, muitas empresas de petróleo estão adotando diferentes sistemas baseados em conhecimento com o objetivo de ter uma melhor predição de qualidade de reservatório. No entanto, existem obstáculos que não permitem geólogos com diferentes formações recuperar as informações sem a necessidade da ajuda de um especialista em tecnologia da informação. O principal problema é a heterogeneidade semântica dos usuários finais quando fazem consultas em um sistema de consulta visual (VQS). Isto pode ser pior quando há uma nova terminologia na base de conhecimentos que afetam a interação do usuário, especialmente para usuários novatos. Neste contexto, apresentamos contribuições teóricas e práticas que explora o sinergismo entre ontologia e interação homem-computador (HCI). Do lado da teoria, introduzimos o conceito de visão de ontologia bem fundamentada e a sua definição formal. Nós nos concentramos na extração de vista ontologia de uma ontologia bem fundamentada e completa, baseando-nos em meta-propriedades ontológicas e propusemos um algorítmo independente da linguagem para extração de sub-ontologia que é guiada por meta-propriedades ontológicas. No lado prático, baseado nos princípios de HCI e desenho de interação, propusemos um novo sistema de consulta visual que usa o enfoque de vistas de ontologias para guiar o processo de consulta. Também o nosso desenho inclui visualizações de dados que ajudarão geólogos a entender os dados recuperados. Além disso, avaliamos nosso desenho com um teste de usabilidade a-través de um questionário em experimento controlado. Cinco geólogos que trabalham na área de Geologia do Petróleo foram avaliados. O enfoque proposto é avaliado no domínio de petrografia tomando as comunidades de Diagênese e Microestrutural adotando o critério de precisão e revocação. Os resultados experimentais mostram que termos relevantes obtidos de documentos de uma comunidade varia entre 30 a 66% de precisão e 4.6 a 36% de revocação, dependendo do enfoque selecionado e da combinação de parâmetros. Além disso, os resultados mostram que, para toda combinação de parâmetros, a revocação obtidos de artigos de diagênese usando a sub-ontologia gerada para a comunidade de diagênese é maior que a revocação e f-measure usando a sub-ontologia gerada para a comunidade de microestrutural. Por outro lado, resultados para toda combinação de parâmetros mostram que a revocação e f-measure obtida de artigos de microestrutural usando a sub-ontologia gerada para a comunidade de microestrutural é maior que a revocação e o fmeasure usando a sub-ontologia gerada para a comunidade de diagêneses. / Nowadays many petroleum companies are adopting different knowledge-based systems aiming to have a better reservoir quality prediction. However, there are obstacles that not allow different background geologists to retrieve information without needing the help of an information technology expert. The main problem is the heterogeneity semantic of end users when doing queries in a visual query system (VQS). This can be worst when there is new terminology in the knowledge-base affecting the user interaction, particularly for novice users. In this context, we present theoretical and practical contributions that exploit the synergism between ontology and human computer interaction (HCI). On the theory side, we introduce the concept of ontology view for well-founded ontology and provide a formal definition and expressive power characterization. We focus in the ontology view extraction of a well-founded and complete ontology based on ontological meta-properties and propose a language independent algorithm for sub-ontology extraction, which is guided by ontological meta-properties. On the practical side, based on the principles of HCI and interaction design, we propose a new Visual Query System that uses the ontology view approach to guide the query process. Also, our design includes data visualizations that will help geologists to make sense of the retrieved data. Furthermore, we evaluated our interaction design with five users performing a usability testing through a questionnaire in a controlled experiment. The evaluation was performed over geologists that work in the area of petroleum geology. The approach proposed is evaluated on the petrography domain taking the communities of Diagenesis and MicroStructural adopting the well known criteria of precision and recall. Experimental results show that relevant terms obtained from the documents of a community varies from 30 to 66 % of precision and 4.6 to 36% of recall depending on the approach selected and the parameters combination. Furthermore, results show that almost for all the parameters combination that recall and f-measure obtained from diagenesis articles using the sub-ontology generated for the diagenesis community is greater than recall and f-measure using the sub-ontology generated for microstructural community. On the other hand, results for all the parameters combination that recall and f-measure obtained from microstructural articles using the sub-ontology generated for the microstructural community is greater than recall and f-measure using the subontology generated for diagenesis community.
12

Ontology view : a new sub-ontology extraction method / Vista de ontologia : um novo metodo para extrair uma sub-ontologia

Aparicio, Jose Martin Lozano January 2015 (has links)
Hoje em dia, muitas empresas de petróleo estão adotando diferentes sistemas baseados em conhecimento com o objetivo de ter uma melhor predição de qualidade de reservatório. No entanto, existem obstáculos que não permitem geólogos com diferentes formações recuperar as informações sem a necessidade da ajuda de um especialista em tecnologia da informação. O principal problema é a heterogeneidade semântica dos usuários finais quando fazem consultas em um sistema de consulta visual (VQS). Isto pode ser pior quando há uma nova terminologia na base de conhecimentos que afetam a interação do usuário, especialmente para usuários novatos. Neste contexto, apresentamos contribuições teóricas e práticas que explora o sinergismo entre ontologia e interação homem-computador (HCI). Do lado da teoria, introduzimos o conceito de visão de ontologia bem fundamentada e a sua definição formal. Nós nos concentramos na extração de vista ontologia de uma ontologia bem fundamentada e completa, baseando-nos em meta-propriedades ontológicas e propusemos um algorítmo independente da linguagem para extração de sub-ontologia que é guiada por meta-propriedades ontológicas. No lado prático, baseado nos princípios de HCI e desenho de interação, propusemos um novo sistema de consulta visual que usa o enfoque de vistas de ontologias para guiar o processo de consulta. Também o nosso desenho inclui visualizações de dados que ajudarão geólogos a entender os dados recuperados. Além disso, avaliamos nosso desenho com um teste de usabilidade a-través de um questionário em experimento controlado. Cinco geólogos que trabalham na área de Geologia do Petróleo foram avaliados. O enfoque proposto é avaliado no domínio de petrografia tomando as comunidades de Diagênese e Microestrutural adotando o critério de precisão e revocação. Os resultados experimentais mostram que termos relevantes obtidos de documentos de uma comunidade varia entre 30 a 66% de precisão e 4.6 a 36% de revocação, dependendo do enfoque selecionado e da combinação de parâmetros. Além disso, os resultados mostram que, para toda combinação de parâmetros, a revocação obtidos de artigos de diagênese usando a sub-ontologia gerada para a comunidade de diagênese é maior que a revocação e f-measure usando a sub-ontologia gerada para a comunidade de microestrutural. Por outro lado, resultados para toda combinação de parâmetros mostram que a revocação e f-measure obtida de artigos de microestrutural usando a sub-ontologia gerada para a comunidade de microestrutural é maior que a revocação e o fmeasure usando a sub-ontologia gerada para a comunidade de diagêneses. / Nowadays many petroleum companies are adopting different knowledge-based systems aiming to have a better reservoir quality prediction. However, there are obstacles that not allow different background geologists to retrieve information without needing the help of an information technology expert. The main problem is the heterogeneity semantic of end users when doing queries in a visual query system (VQS). This can be worst when there is new terminology in the knowledge-base affecting the user interaction, particularly for novice users. In this context, we present theoretical and practical contributions that exploit the synergism between ontology and human computer interaction (HCI). On the theory side, we introduce the concept of ontology view for well-founded ontology and provide a formal definition and expressive power characterization. We focus in the ontology view extraction of a well-founded and complete ontology based on ontological meta-properties and propose a language independent algorithm for sub-ontology extraction, which is guided by ontological meta-properties. On the practical side, based on the principles of HCI and interaction design, we propose a new Visual Query System that uses the ontology view approach to guide the query process. Also, our design includes data visualizations that will help geologists to make sense of the retrieved data. Furthermore, we evaluated our interaction design with five users performing a usability testing through a questionnaire in a controlled experiment. The evaluation was performed over geologists that work in the area of petroleum geology. The approach proposed is evaluated on the petrography domain taking the communities of Diagenesis and MicroStructural adopting the well known criteria of precision and recall. Experimental results show that relevant terms obtained from the documents of a community varies from 30 to 66 % of precision and 4.6 to 36% of recall depending on the approach selected and the parameters combination. Furthermore, results show that almost for all the parameters combination that recall and f-measure obtained from diagenesis articles using the sub-ontology generated for the diagenesis community is greater than recall and f-measure using the sub-ontology generated for microstructural community. On the other hand, results for all the parameters combination that recall and f-measure obtained from microstructural articles using the sub-ontology generated for the microstructural community is greater than recall and f-measure using the subontology generated for diagenesis community.
13

'A Hebrew from Samaria, not a Jew from Yavneh' : Adya Gur Horon (1907-1972) and the articulation of Hebrew nationalism

Vaters, Romans January 2015 (has links)
This study analyses the intellectual output of Adya Gur Horon (Adolphe Gourevitch, 1907-1972), a Ukrainian-born, Russian-speaking, French-educated ideologue of modern Hebrew nationalism, and one of the founding fathers of the anti-Zionist ideology known as "Canaanism", whose heyday was mid 20th-century Israel. The dissertation's starting point is that if the "Canaanites" (otherwise the Young Hebrews) declared themselves to be above all a national movement independent of, and opposed to, Zionism, they should be analysed as such. In treating "Canaanite" support for the existence of an indigenous Hebrew nation in Palestine/Israel as equally legitimate as the Zionist defence of the Jews' national character (both ultimately constituting "imagined communities"), this work comes to the conclusion that the movement should indeed be classified as a fully-fledged alternative to Zionism; not a radical variation of the latter, but rather a rival national ideology. My chief assertion is that the key to a proper understanding of "Canaanism" is Horon's unique vision of the ancient Hebrew past, which constitutes the "Canaanite" foundational myth that stands in sharp contradiction to its Zionist counterpart. Furthermore, I demonstrate that Zionism and "Canaanism" are incompatible not only because they differ over history, but also because some of the basic socio-political notions they employ, such as national identity or nation-formation, are discordant. A methodology such as this has never before been applied to the "Canaanite" ideology, since most of those who have studied the movement treat "Canaanism" either as an artistic avant-garde or as a fringe variation of Zionism. This study demonstrates that, despite being sidelined by most researchers of "Canaanism", Adya Horon is beyond doubt the leading figure of the "Canaanite" movement. I believe that only by giving due weight to the divergence in national historiographies between "Canaanism" and Zionism can we grasp the former's independence from the latter, both intellectually and politically, without negating "Canaanism's" complex relationship with Zionism and the sometimes significant overlaps between the two. The dissertation makes systematic use of many newly discovered materials, including Horon's writings from the early 1930s to the early 1970s (some of them extremely rare), as well as his private archive. My study thus sits at the intersection of three fields of academic enquiry: nationalism studies; language-based area studies; and historiographical discourse analysis.
14

Leveraging technology transfer for competitive advantage in African firms

Whittal-Steynberg, Tamaryn January 2021 (has links)
Africa has long been considered as the next big growth market, according to both experts and economic organisations alike (World Economic Forum, African Union, The Economist, McKinsey). With a youthful population, a burgeoning consumption market, and its increased digital advancement, Africa has unrivalled potential. However, economic progress has lagged, necessitating the need to leapfrog, i.e., harness technological innovation to accelerate economic growth, to contribute towards realising the 2030 Sustainable Development Goal “Decent Work and Economic Growth”. Additionally, Africa cannot afford not to, given the downsides of the lack of economic growth (instability and extremism). In academic research, technological innovation is driven by firms’ and individuals’ absorptive capacity (AC), i.e., their ability to recognise new knowledge, assimilate it, and apply it for commercial ends. However, there remains a lack of understanding on how to operationalise and leverage AC. The research was undertaken with the aim to understand AC from a micro-foundational perspective within the Africa and 4IR contexts. Qualitative research was conducted across 6 African countries (Ethiopia, Ghana, Kenya, Nigeria, Rwanda, South Africa), with 16 social actors, to gain insights on the processes, mechanisms and factors that contribute towards micro-foundational AC. The key findings of this research underscore the importance of the individual within the AC process. Additionally, the importance of contextualising AC to a developing market is highlighted. Other key findings reveal the enabling and hindering factors for successful AC. This research aimed to offer a contribution towards AC micro foundational research, and to offer practical insights for African firms, within the context of the 4IR era. / Mini Dissertation (MBA)--University of Pretoria, 2021. / Gordon Institute of Business Science (GIBS) / MBA / Unrestricted
15

Elevers tidiga taluppfattning : En studie om det obligatoriska bedömningsstödet i taluppfattning för årskurs 1

Brandstedt, Lisa, Herrlin, Camilla January 2020 (has links)
Studiens syfte är att undersöka på vilket sätt Andrews & Sayers (2015) åtta komponenter för taluppfattning återfinns i det obligatoriska nationella bedömningsstödet i taluppfattning för vårterminen i årskurs 1. Vidare syftar studien att undersöka vilken möjlighet kartläggningsmaterialet ger läraren att identifiera elevernas taluppfattning. Det analyserade materialet har begränsats till bedömningsstödet i taluppfattning för vårterminen. Bedömningsstödet består av en skriftlig del och en muntlig del samt tre olika kunskapsnivåer (lägre-, mellan och högre nivå) för vardera del. Analysen fokuserar främst på de uppgifter som finns på mellannivå då denna är den lägst godtagbara nivån. Studiens teori utgår från Andrews & Sayers (2015) ramverk för grundläggande taluppfattning. Resultatet i studien visar att alla de åtta komponenterna täcks av materialet, dock varierar det i vilken omfattning komponenterna återfinns. Sammantaget återfinns flest komponenter i de muntliga uppgifterna. Vidare visar resultatet att kartläggningsmaterialet kan ge läraren möjligheter att identifiera elevernas taluppfattning även om vissa komponenter kräver ytterligare material och tillfällen att kartlägga.
16

To Teach or Not to Teach Controversial Issues? : An Interview Study of Upper Secondary English Teachers’ Attitudes and Experiences of Teaching Controversial Issues Through Fictional Works

Swärd, Ida January 2021 (has links)
This study aims to examine how upper secondary English teachers work with foundationalvalues and controversial topics through fictional works in order to discuss the function of valuesand the civic mission in the EFL-classroom. The study was conducted using a qualitativeapproach through semi structured interviews, interviewing seven currently active uppersecondary English teachers. To structure the data from the interviews a thematic analysis wasapplied, and the theoretical approaches used for analysing the data were transformativepotential and narrative imagination.The results of this study show that the participants have an interest in using fictional workscontaining controversial issues for discussing foundational values in the classroom. The studyalso shows that there are both common challenges and advantages of teaching controversialissues through fiction. All participants had similar opinions about the advantages which werethe emergence of expanding worldviews and perspectives among pupils. The challengesmentioned among the participants were: reading in a second language, giving the pupils enoughpre-knowledge and knowing which position to take as a teacher during discussions aboutcontroversial topics. Noticeable differences in the teachers’ opinions were due to their lengthof work experience. Finally, the civic mission in the EFL-classroom could be distinguished inthe teachers’ arguments of why they implement fictional works with controversial topics intheir teaching.
17

Still a stronghold of welfare governance? A Critical Reading of the EU’s Educational Policy in a Neoliberal Era

Rudolf-Cibien, Miguel January 2019 (has links)
In the last decades, the EU’s policy on education has become increasingly geared towards serving the economy. While some have been quick to label these changes as neoliberal, this is not such an obvious analysis considering that European education systems are still well-known for their welfare governance. This research attempts to clarify the relation between the EU educational policy and neoliberalism. Inspired by post-foundational discourse theory, we conducted a discourse analysis of three key European Union educational policy documents. Extending on a frame of 20 years, our analysis identifies an incremental neoliberalization of the policy as well as a number of conclusive similarities with neoliberal rationality. We contribute in showing how the economic dimension of the EU educational policy has not so much replaced the other objectives than it has incorporated them. We also show how contemporary educational policy continues the dynamic of neoliberalization, hinting a further dismantlement of the welfare states system in Europe. Our study stands to reinforce the conceptual link between European education and neoliberalism and as such contributes to the understudied ideational perspectives on the topic, complementing some shortcomings left by the mainstream theories, like neo-functionalism and liberal intergovernmentalism.
18

Validity and validation of safety-related quantitative risk analysis: A review

Goerlandt, Floris, Khakzad, Nima, Reniers, Genserik 11 November 2020 (has links)
Quantitative risk analysis (QRA) is widely applied in several industries as a tool to improve safety, as part of design, licensing or operational processes. Nevertheless, there is much less academic research on the validity and validation of QRA, despite their importance both for the science of risk analysis and with respect to its practical implication for decision-making and improving system safety. In light of this, this paper presents a review focusing on the validity and validation of QRA in a safety context. Theoretical, methodological and empirical contributions in the scientific literature are reviewed, focusing on three questions. Which theoretical views on validity and validation of QRA can be found? Which features of QRA are useful to validate a particular QRA, and which frameworks are proposed to this effect? What kinds of claims are made about QRA, and what evidence is available for QRA being valid for the stated purposes? A discussion follows the review, focusing on the available evidence for the validity of QRA and the effectiveness of validation methods.
19

Livy, Folklore, and Magic: A Reappraisal of Rome's Foundational Mythology

Albrecht, Jeremy L. 04 May 2020 (has links)
No description available.
20

It all Begins with Play: A Phenomenological Study on Child Led Pedagogy

Duffy, Emily Burkholder 11 August 2022 (has links)
No description available.

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