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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.
111

Exploring Hidden Coherent Feature Groups and Temporal Semantics for Multimedia Big Data Analysis

Yang, Yimin 31 August 2015 (has links)
Thanks to the advanced technologies and social networks that allow the data to be widely shared among the Internet, there is an explosion of pervasive multimedia data, generating high demands of multimedia services and applications in various areas for people to easily access and manage multimedia data. Towards such demands, multimedia big data analysis has become an emerging hot topic in both industry and academia, which ranges from basic infrastructure, management, search, and mining to security, privacy, and applications. Within the scope of this dissertation, a multimedia big data analysis framework is proposed for semantic information management and retrieval with a focus on rare event detection in videos. The proposed framework is able to explore hidden semantic feature groups in multimedia data and incorporate temporal semantics, especially for video event detection. First, a hierarchical semantic data representation is presented to alleviate the semantic gap issue, and the Hidden Coherent Feature Group (HCFG) analysis method is proposed to capture the correlation between features and separate the original feature set into semantic groups, seamlessly integrating multimedia data in multiple modalities. Next, an Importance Factor based Temporal Multiple Correspondence Analysis (i.e., IF-TMCA) approach is presented for effective event detection. Specifically, the HCFG algorithm is integrated with the Hierarchical Information Gain Analysis (HIGA) method to generate the Importance Factor (IF) for producing the initial detection results. Then, the TMCA algorithm is proposed to efficiently incorporate temporal semantics for re-ranking and improving the final performance. At last, a sampling-based ensemble learning mechanism is applied to further accommodate the imbalanced datasets. In addition to the multimedia semantic representation and class imbalance problems, lack of organization is another critical issue for multimedia big data analysis. In this framework, an affinity propagation-based summarization method is also proposed to transform the unorganized data into a better structure with clean and well-organized information. The whole framework has been thoroughly evaluated across multiple domains, such as soccer goal event detection and disaster information management.
112

Sy ända in i graven : Jämförelse mellan tre vikingatida gravfälts textilrelaterade fynd / Sew into the grave : A comparison between three Viking era grave fields textile related finds

Johnsson, Elin January 2020 (has links)
This essay will treat the Gotlandic textile production during the Viking period (790 AD­–1150 AD) by studying the three grave fields, Barshalder in Grötlingbo parish, Broe in Halla parish and Ire in Hellvi parish. The focus of the study are the textile related objects, spindle whorls, weaving tablets, needles and needle cases found at the grave fields. The study will mainly examine the spindle whorls since differences in the weight and diameter can tell us about what type of yarn or thread that was produced and in extent the textiles that were produced. The results will be catalogued, and a correspondence analysis will be done in hope it will show patterns in the material. The study will also look at if there are differences between the three grave fields and in extent on the island.
113

Cleavage politics and Europeanisation-induced transformation of the national political space - the case of the Czech Republic

Stahl, Cosimo January 2014 (has links)
Bibliographic note STAHL, C. (2014): Cleavage Politics and Europeanisation-induced transformation of the national political space - The Case of the Czech Republic, 94 p. Master thesis, Charles University, Faculty of Social Sciences, Institute of International Studies. Supervisor: doc. PhDr. Jiří Vykoukal, CSc. Abstract This research seeks to map the national political space and assess the prevailing cleavage patterns in the Czech Republic. Processes of globalisation and Europeanisation have left their imprint in Western Europe - splitting the electorate into winners and losers of globalisation and denationalisation. This demarcation vs. integration magnet is also relevant in the CEE region - altering and reshuffling the underlying structure of party competition and EU contestation. By employing quantitative content analysis of print media the prevailing issue and cleavage dimensions will be reconstructed both during early stages of democratic transition (1996 Parliamentary elections) and after the 2004-EU-enlargement (2010 elections). While the political discourse and politics in the 1990s are primarily structured by issues of economic transition and post-communist transformation (underlying the classical socio-economic cleavage between market and state), in 2010 also cultural and post-materialist political...
114

Geschäftsmodelle in den Transportketten des europäischen Schienengüterverkehrs: Eine Typologisierung von Eisenbahnverkehrsunternehmen unter besonderer Berücksichtigung der Anbieterstruktur im deutschsprachigen Raum

Fischer, Tobias 22 January 2008 (has links)
In der Verkehrswirtschaft findet ein von der Europäischen Union ausgelöster Deregulierungsprozess statt, welcher zu neuen und wissenschaftlich bisher nicht identifizierten Geschäftsmodellen in den Transportketten des Schienengüterverkehrs in Europa geführt hat. Diese Geschäftsmodelle stellen den Untersuchungsgegenstand der Dissertation dar. Zur Durchführung deren Identifikation definiert der Autor ein Geschäftsmodellverständnis und grenzt dieses vom Strategiebegriff ab. Er konkretisiert den Geschäftsmodellbegriff mit der Art und Weise der Wertschöpfung im Unternehmen und nutzt dafür unter anderem theoretische Ansätze des strategischen Managements und der Institutionenökonomie. Die gewählten Ansätze verknüpft er zu einem Wertschöpfungswürfel, mit welchem er die Identifikation der Wertschöpfung in den Geschäftsmodellen des Schienengüterverkehrs vornimmt. Den Leistungsumfang der Geschäftsmodelle des Schienengüterverkehrs gegenüber den Kunden bringt der Autor durch die Berücksichtigung der Transportketten in die Diskussion ein. Aus den Dimensionen Art und Weise der Wertschöpfung und Leistungsumfang in den Transportketten bildet er ein Portfolio zur Geschäftsmodellidentifikation, welches neun theoretische Geschäftsmodelle in den Transportketten des europäischen Schienengüterverkehrs beschreibt. Um die Geschäftsmodelle auch empirisch nachzuweisen führt der Autor eine Studie unter Güterbahnen im deutschsprachigen Raum durch. Die Auswertung erfolgt mittels einer Korrespondenzanalyse, durch welche das theoretisch aufgestellte Portfolio bestätigt wird und sechs zum Teil signifikant verschiedene Geschäftsmodelle in den Transportketten des Schienengüterverkehrs identifiziert werden. Mittels der entwickelten Geschäftsmodelllogik ermittelt der Autor den Veränderungsbedarf je Geschäftsmodell, wofür auch erweiterte Korrespondenzanalyen zur Anwendung kommen. (Autorenreferat) / In transport economics a deregulation process is taking place, triggered by the European Union, which has led to new and not scientifically identified business models in transport chains of European rail freight transport. These business models represent the examination subject of the thesis. For their identification the author defines an understanding of business model and delimits this from the strategy concept. He puts the business model concept in concrete terms with the way of the added value in the enterprise and uses among other things theoretical approaches of the strategic management and the institutional economics. He connects the chosen approaches to an added value cube with which he carries out the identification of the added value in the business models of rail freight transport. Considering also transport chains the author brings into the discussion the scope of work of the business models of rail freight transport for the customer. Out of the dimensions ‘way of the added value’ and ‘scope of work in the transport chains’ he forms a portfolio for the business model identification which describes nine theoretical business models in the transport chains of the European rail freight transport. To prove the business models also empirically, the author carries out a study under railway undertakings in the German-speaking area. The examination of the study was done with a correspondence analysis with which the theoretically built portfolio was confirmed and six partly significantly different business models in the transport chains of the rail freight transport were identified. By means of the developed business model logic the author determines the change requirement per business model. For this he uses also enlarged applications of the correspondence analysis. (Author’s abstract)
115

Spatiotemporal Variation of Karst Ecosystem Service Values and Its Correlation With Environmental Factors in Northwest Guangxi, China

Zhang, Mingyang, Zhang, Chunhua, Wang, Kelin, Yue, Yuemin, Qi, Xiangkun, Fan, Feide 01 November 2011 (has links)
In this investigation we analyzed the spatiotemporal variation of ecosystem service values (ESVs) and its correlation with numerous environmental factors (EFs) for the karst region of Northwest Guangxi, China, from 1985 to 2005 using remote sensing, geographic information systems (GIS) and statistical techniques. The results indicate that historically ESVs for this karst region decreased from 1985 (109.652 billion Yuan) to 1990 (88.789 billion Yuan) and then increased at the turn of the twenty-first century. However, the ESVs in both 2000 (103.384 billion Yuan) and 2005 (106.257 billion Yuan) never achieved the level recorded in 1985. The total of nutrient cycling, organic production and gas regulation combined were 72.69, 64.57, 70.18 and 72.10% of ESVs in 1985, 1990, 2000 and 2005, respectively. In contrast, the ESVs of water conservation, soil reservation, recreation and culture were determined to be relatively low contributing only 17.44, 23.82, 19.26 and 24.76% of total ESVs, respectively, during these four years. With regards to the spatial distribution of ESVs, larger values were recorded in the west and smaller ones recorded in the east. The most significant factors that were deemed to influence ESVs are annual rainfall, per capita cropland, slope and vegetation coverage. Annual rainfall and slope exert a negative force, whereas per capita cropland and vegetation coverage exert a positive force on ESVs. The results of the study would suggest that ecosystem conditions of this important karst region have been improved as the result of the implementation of rocky desertification control policies.
116

Viejo Period Architecture in the Casas Grandes Region of Northern Mexico

Jensen, Samuel J. 24 April 2023 (has links) (PDF)
The Casas Grandes region of northern Mexico is an understudied, though important, part of the culture area that has come to be known as the Northwest/Southwest (NW/SW). What studies have been conducted in the Casas Grandes region have focused on the Medio Period (approximately 1200-1450 AD) and the large site of Paquimé. Only a small amount of research has been conducted on the preceding Viejo Period (approximately 700-1200 AD). In this thesis, I create a clearing house of published Viejo Period architectural features excavated in the Casas Grandes region. I also analyze those features to develop our understanding of the materials and technological choices used to construct these features, and to evaluate the validity of sub-regional zones which have begun to develop within the archaeological literature from this area. These analyses include a qualitative analysis of the excavated architectural features as well as statistical clustering methods, a Principal Components Analysis, and a Correspondence Analysis of available architectural data. I ultimately propose revisions to the existing architectural typology for the Viejo Period and the abandonment of the concept of sub-regional zones within the Casas Grandes region. I also observe some emerging patterns within the architectural data and suggest that further research is needed to fully understand the distribution of architectural features throughout the region.
117

Differential Diagnosis of Dizziness Following a Sports-Related Concussion

Reneker, Jennifer Christine 24 November 2015 (has links)
No description available.
118

Smyckade gotländska kvinnor : En studie av samspelet mellan feminina smycken i gravar & depåer under vikingatiden på Gotland / Jeweled Gotlandic women : A study of the interplay between feminine jewellery in graves and hoards in Viking age Gotland

Andersson, Isabelle January 2022 (has links)
The aim of this thesis is to investigate the social role of women in the Viking Age on Gotland. The female jewellery articulated the Gotlandic identity on the island in the Viking Age, unlike the men's jewellery which expressed similarities with other places in Scandinavia. Therefore, the female jewellery can be seen as traces of an important cultural expression that distinguished the Gotlandic women from others. The understanding of which types of jewellery that are considered to be linked to the female gender during the Viking Age is based on a number of excavated graves. The jewellery in graves have been researched for a long time. However, there is another category that includes jewellery which have been neglected, namely hoards. Therefore, this thesis investigates female jewellery in graves to understand the composition of jewellery in hoards. The purpose of this is to interpret if the hoards can express a female gender identity, similar to the female gender identity in graves based on the composition of jewellery. This is realized through the use of performativity and embodiment theory. The similarities and the differences between the jewellery in graves and hoards are investigated through a correspondence analysis. The result show that the differences between the composition of jewellery in graves and hoards are meaningful. The graves consists of a more complete set of jewellery made of bronze, whereas the hoards are interpreted to consist of parts of a complete set or a larger number of the same type of jewellery. The hoards also contain more jewellery made of precious metals than the graves. The hoards are intrepreted as savings of vaiable jewellery that could be resumed and used again by women. The Guta Law is applied in this thesis to contribute to the understanding of who owned the jewellery that women wore. The result is that women did not own the jewellry individually. Instead it was owned collectively by the family but that women might have had the responsebility of the jewellery during their lifetime. It is interpreted that women, through the use of Gotlandic jewellery, had the social role in society to show off the family wealth and their Gotlandic identity. Therefore, it is argued that women played a crucial part in public gatherings and had an active role in the Gotlandic society in the Viking Age.
119

Barshalder 1 : A cemetery in Grötlingbo and Fide parishes, Gotland, Sweden, c. AD 1-1100. Excavations and finds 1826-1971

Rundkvist, Martin January 2003 (has links)
<p>The prehistoric cemetery of Barshalder is located along the main road on the boundary between Grötlingbo and Fide parishes, near the southern end of the island of Gotland in the Baltic Sea. The cemetery was used from c. AD 1-1100.</p><p>The level of publication in Swedish archaeology of the first millennium AD is low compared to, for instance, the British and German examples. Gotland’s rich Iron Age cemeteries have long been intensively excavated, but few have received monographic treatment. This publication is intended to begin filling this gap and to raise the empirical level of the field. It also aims to make explicit and test the often somewhat intuitively conceived results of much previous research. The analyses deal mainly with the Migration (AD 375–540), Vendel (AD 520–790) and Late Viking (AD 1000–1150) Periods.</p><p>The following lines of inquiry have been prioritised.</p><p>1. Landscape history, i.e. placing the cemetery in a landscape-historical context. (Vol. 1, section 2.2.6)</p><p>2. Migration Period typochronology, i.e. the study of change in the grave goods. (Vol. 2, chapter 2)</p><p>3. Social roles: gender, age and status. (Vol. 2, chapter 3)</p><p>4. Religious identity in the 11th century, i.e. the study of religious indicators in mortuary customs and grave goods, with particular emphasis on the relationship between Scandinavian paganism and Christianity.. (Vol. 2, chapter 4)</p><p>Barshalder is found to have functioned as a central cemetery for the surrounding area, located on peripheral land far away from contemporary settlement, yet placed on a main road along the coast for maximum visibility and possibly near a harbour. Computer supported correspondence analysis and seriation are used to study the gender attributes among the grave goods and the chronology of the burials. New methodology is developed to distinguish gender-neutral attributes from transgressed gender attributes. Sub-gender grouping due to age and status is explored. An independent modern chronology system with rigorous type definitions is established for the Migration Period of Gotland. Recently published chronology systems for the Vendel and Viking Periods are critically reviewed, tested and modified to produce more solid models. Social stratification is studied through burial wealth with a quantitative method, and the results are tested through juxtaposition with several other data types.</p><p>The Late Viking Period graves of the late 10th and 11th centuries are studied in relation to the contemporary Christian graves at the churchyards. They are found to be symbolically soft-spoken and unobtrusive, with all pagan attributes kept apart from the body in a space between the feet of the deceased and the end of the over-long inhumation trench. A small number of pagan reactionary graves with more forceful symbolism are however also identified. The distribution of different 11th century cemetery types across the island is used to interpret the period’s confessional geography, the scale of social organisation and the degree of allegiance to western and eastern Christianity. 11th century society on Gotland is found to have been characterised by religious tolerance, by an absence of central organisation and by slow piecemeal Christianisation.</p>
120

Students' Assets and Strategies via the Erasmus Mundus Scholarship Program : A Case of Cambodia's Master Degree Students

Chhim, Putsalun January 2018 (has links)
This study analyzes, the structure of the Erasmus Mundus scholarship program by utilizing mixed methods, and is being analyzed within the contextualized framework of the Cambodia’s Higher Education system as well as its relationship with the Erasmus Mundus scholarship program. Mixed approach has been employed for this study, combining both quantitative data to construct the social space, which acts as a backbone for interpretation, and qualitative data from interviewing the scholarship program coordinator and scholarship holders in order to investigate the recruitment process and the students’ perception respectively, presenting the macro-micro relationship that makes up the entirety of the scholarship program. Collectively inspected, the findings reveal a new contextualized result that contributes not only to the development of the Cambodia’s Higher Education, but also to its position and its students within the space of the scholarship program of Erasmus Mundus. Through the close inspection using interview method, the underlying complexity of the recruitment process of the scholarship program is illustrated, indicating a multi-layer hierarchy and multiple decision-making processes. There are also implications of oppositions between the properties of the students, signaling the diversified student body in the scholarship program. Prominent theme of the opposition in the space appears to be related to the colonial past of the Cambodia’s system as well as the differences between local and international experiences that the students possess. Students interviewed in the study, furthermore, reveal how they prepared themselves to apply for the scholarship program and to be successful candidate, which depicts their assets and strategies that can be derived from the constructed space. Unanimously the students show strong confidence and great insight of information which can be understood as the compatibilities between the recruiter of the scholarship program and the students’ assets. Finally, overall findings give a new perspective of the profile of the scholarship program within the Erasmus Mundus mobility scheme. It shows that while students are required to possess certain objectively set requirements, there are also exception cases that students who possessed lower amount of capitals can also be successful, provided that the conditions like the credentials of their degree from Cambodia, as well as minimum requirements to pass the university admission have been met, and their “motivation letter” is exceptionally well-written which shows the subjective side of the recruitment process.

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