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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.
51

Den invasiva Blomsterlupinens (Lupinus polyphyllus) förekomst inom och utanför artrika vägkanter / Occurrence of the invasive Garden lupine (Lupinus polyphyllus) within and outside species rich road verges

Jakobsson, Lotta January 2021 (has links)
Invasiva arter är ett stort hot mot den biologiska mångfalden världen över och den invasiva blomsterlupinen bidrar till minskad biodiversitet i de miljöer som den invaderar. Den är ett stort hot mot organismer i artrika infrastrukturmiljöer såsom artrika vägkanterna, vilka innehar en hög biologisk mångfald med hotade och sällsynta arter. I denna studie används GIS (Geografiskt informationssystem) för att undersöka blomsterlupinernas utbredning längsmed vägnätet i Jämtlands län. Resultatet visar att icke artrika vägkanter har en större andel vägkant med förekomst av blomsterlupiner än artrika vägkanter. Det finns ingen skillnad mellan artrika vägkanter med en bedömd högre värdeklass än artrika vägkanter med en bedömd lägre värdeklass vad gällande andelen vägkant med förekomst av blomsterlupiner. Att urskilja bakomliggande orsaker till det framkomna resultatet är problematiskt eftersom vägkanterna är heterogena miljöer som dessutom påverkas av många abiotiska och biotiska faktorer. Förekomsten av störningar snarare än biotisk resistens framhålls som tänkbar förklaring och utpekas som en inriktning för vidare forskning kring spridningen av blomsterlupiner inom vägnätet. / Invasive species are a major threat for biodiversity worldwide and the invasive Garden Lupine has shown to decrease biodiversity in the environments it invades. The invasion of Garden Lupines threatens infrastructure habitats, such as species rich road verges, which possess a high biodiversity with endangered and rare species. In this study, I used GIS (Geographic Information System) to investigate the spread of the Garden Lupine along the road network in the Swedish county of Jämtland. The result shows that non species-rich road verges have a larger proportion of road sections with occurrence of Garden Lupine than species rich road verges. A comparison between higher status species-rich road verges and lower status species rich road verges showed no difference in the proportion of the road section that contain Garden Lupine. Distinguishing the underlying causes to the result is problematic since road verges are heterogenic habitats under influence of a large variety of abiotic, biotic and anthropogenic factors. The presence of disturbances is a more likely explanation to the occurrence patterns than biotic resistance. This would also be a potential direction for further research concerning the spread of Garden Lupines along road verges.
52

To Make Iron of Iron : A Comprehensive Analytical Study of Spade Shaped Iron Bars

Pappas Adlerburg, Nickolas T. January 2017 (has links)
This thesis aims to provide adequate analytical information on the spade shaped iron bars of Norrland and central Sweden. While their significance has been thoroughly debated for decades, analytical research on them has been confined to cases of single artefacts or theoretical interpretations of their value, meaning and origin. In this study a comprehensive approach is taken into consideration. Based on X-Ray fluorescence (XRF), scanning electron microscopy (SEM) and metallographical analysis this thesis seeks to facilitate new interpretations on quality, production centres and usage based on analytical results. Aiming to settle some of the long lasting questions regarding the artefacts while producing results which can further the discussion by raising new questions, previously unasked.
53

Contested Landscapes/Contested Heritage : history and heritage in Sweden and their archaeological implications concerning the interpretation of the Norrlandian past

Loeffler, David January 2005 (has links)
<p>This case study explores how geo-political power structures influence and/or determine the conception, acceptance and maintenance of what is considered to be valid archaeological knowledge. The nature of this contingency is exemplified through an examination of how the prehistory of Norrland, a region traditionally considered and portrayed as peripheral vis-à-vis the centre-South, was interpreted and presented by Swedish archaeologists during the 20th century. This contextual situation is analysed through the implementation of three interrelated and complimentary perspectives;</p><p>1) The relationship between northern and southern Sweden is examined using concepts concerning the nature of colonialism, resulting in the formulation of 20 particulars that typify the colonial experience, circumstances that characterise the historical, and unequal, association that has existed between these two regions for the last 600 years.</p><p>2) Ideals of national identity and heritage as manufactured and employed by the kingdom and later by the nation-state, with the assistance of antiquarianism, archaeology and/or centralised cultural management, are outlined. The creation of these various concepts have reinforced and perpetuated the colonial and asymmetrical association between what has naturally come to be viewed as the peripheral-North and the centre-South.</p><p>3) A century of archaeological research into the Norrlandian past is studied using the concepts ‘thoughtstyle’ and ‘thought-collective’ as devised by Ludwik Fleck. This analysis disclosed a persistent set of reoccurring explanations that have constantly been invoked when interpreting and presenting the prehistory of Norrland. This archaeological thought-style has normalised the unbalanced power relationship between North and South that has existed for the last 600 years by projecting it far back into the prehistoric past.</p><p>This case study has demonstrated that archaeologists, unless acutely aware of the historical context in which they themselves move and work, risk legitimising debilitating economic and political power relationships in the present through their study and presentation of the past.</p>
54

Contested Landscapes/Contested Heritage : history and heritage in Sweden and their archaeological implications concerning the interpretation of the Norrlandian past

Loeffler, David January 2005 (has links)
This case study explores how geo-political power structures influence and/or determine the conception, acceptance and maintenance of what is considered to be valid archaeological knowledge. The nature of this contingency is exemplified through an examination of how the prehistory of Norrland, a region traditionally considered and portrayed as peripheral vis-à-vis the centre-South, was interpreted and presented by Swedish archaeologists during the 20th century. This contextual situation is analysed through the implementation of three interrelated and complimentary perspectives; 1) The relationship between northern and southern Sweden is examined using concepts concerning the nature of colonialism, resulting in the formulation of 20 particulars that typify the colonial experience, circumstances that characterise the historical, and unequal, association that has existed between these two regions for the last 600 years. 2) Ideals of national identity and heritage as manufactured and employed by the kingdom and later by the nation-state, with the assistance of antiquarianism, archaeology and/or centralised cultural management, are outlined. The creation of these various concepts have reinforced and perpetuated the colonial and asymmetrical association between what has naturally come to be viewed as the peripheral-North and the centre-South. 3) A century of archaeological research into the Norrlandian past is studied using the concepts ‘thoughtstyle’ and ‘thought-collective’ as devised by Ludwik Fleck. This analysis disclosed a persistent set of reoccurring explanations that have constantly been invoked when interpreting and presenting the prehistory of Norrland. This archaeological thought-style has normalised the unbalanced power relationship between North and South that has existed for the last 600 years by projecting it far back into the prehistoric past. This case study has demonstrated that archaeologists, unless acutely aware of the historical context in which they themselves move and work, risk legitimising debilitating economic and political power relationships in the present through their study and presentation of the past.
55

Combination of Borehole Seismic and Downhole Logging to Investigate the Vicinity of the COSC‑1 Borehole in Western Scandinavia

Krauß, Felix 05 July 2018 (has links)
In dieser Arbeit werden bohrlochseismsiche Messungen sowohl mit Bohrlochmessungen als auch mit oberflächenseismischen Messungen ausgewertet und verglichen um das bohrlochnahe Umfeld der Forschungsbohrung COSC-1 (Collisional Orogeny in the Scandinavian Caledonides) zu beschreiben. Die bohrlochseismischen Daten zeigen deutlich hohe Reflektivität und seismische Anisotropie der erbohrten geologischen Einheit, der Seve-Decke. Diese Decke zeichnet sich durch einen häufigen Wechsel von mafischen und felsischen Gesteinen aus, welcher auch durch eine Clusteranalyse der Bohrlochmessungen deutlich wird. Die Ergebnisse der Clusteranalyse korrelieren gut mit den seismisch abgebildeten Untergrundstrukturen und den seismischen Geschwindigkeiten. Abschließend wurde die virtual source method als Beispiel der seismischen Interferometrie an einem Teildatensatz erfolgreich getestet. Mit dem Ansatz wurde eine künstliche Messgeometrie mit seismischen Quellen und Empfängern im Bohrloch erzeugt, welche eine gute Datenqualität aufzeigen. / In this thesis, the vicinity of the scientific borehole COSC-1 (Collisional Orogeny in the Scandinavian Caledonides) is investigated by the combination of a borehole seismic survey with downhole logging data and a surface seismic survey. The borehole seismic data show a significantly higher reflectivity and seismic anisotropy within the drilled geological unit, the Seve Nappe. This nappe is characterised by frequent changes of mafic and felsic lithologies that are also highlighted by a cluster analysis. The results of the cluster analysis correlate well with structures of the subsurface as imaged by the surface seismic survey and with seismic velocities. Additionally, the virtual source method as example for seismic interferometry is applied to a data subset. This approach created a virtual survey geometry with seismic sources and receivers within the borehole and a good data quality.
56

To Make Iron of Iron : A Comprehensive Analytical Study of Spade Shaped Iron Bars

Pappas Adlreburg, Nickolas January 2017 (has links)
This thesis aims to provide adequate analytical information on the spade shaped iron bars of Norrland and central Sweden. While their significance has been thoroughly debated for decades, analytical research on them has been confined to cases of single artefacts or theoretical interpretations of their value, meaning and origin. In this study a comprehensive approach is taken into consideration. Based on X-Ray fluorescence (XRF), scanning electron microscopy (SEM) and metallographical analysis this thesis seeks to facilitate new interpretations on quality, production centres and usage based on analytical results. Aiming to settle some of the long lasting questions regarding the artefacts while producing results which can further the discussion by raising new questions, previously unasked.
57

Momma &amp; Mormor : Berättelsen om Fridhem

Björklund, Ingrid January 2021 (has links)
I mitt projekt utvecklar jag konstnärliga designmetoder för att studera, samla in och berätta om kvinnohistoria och interiörhistoria, inspirerat av feministiska och queerteoretiska perspektiv på temporalitet, identitet, historia, material och berättande. Mitt examensarbete utgår från min 90-åriga mormors berättelser om sina barndomsminnen av hennes två mormödrar ‘Momma’ och ‘Mormor’ och hur det var att spendera somrarna på deras gård, Fridhem. I formgivning av bordet Fridhem, tavlan Systrar på gungbräda i trädgården, installationen Flytande fragment och installationen av dessa under Konstfacks Vårutställning 2021 tillsammans med ljudverket Minnen från Momma och Mormors Fridhem, manifesterar jag studierna och berättelsen.

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