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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

Study of morphological evolution of dune fields in Cantabria  (N. Spain) during the Anthropocene / Studie av morfologisk utveckling av dynfält i Kantabrien (norra Spanien) under Antropocen

Borghero, Cecilia January 2015 (has links)
The beach-dune system constitutes a dynamic system in which several natural processes interact, both at short and long time scale. Beaches are important because are the source of sediment for the dunes that form at the limit of the shore and that create barriers that protect the mainland from the high energy waves and from floods. However dunes are quite fragile features because susceptible to erosion and for this reason they need particular attention and management, tasks not always easy to carry out since the factors involved are numerous. Along the Cantabrian coast, northern Spain, extended dune fields are present in correspondence with estuarine environments. In the last few decades they have experienced erosion due to natural agents such as winds, superficial water currents and river discharge and due to the anthropogenic influence, which after the Second World War started to increase, until the present. Additionally, intense erosive events such as storms occur seasonally, causing eventually damages to the infrastructures; the last remarkable events happened precisely in January and February 2014. The objective of this work is the analysis of the evolution of the surface and limits of four representative dune fields in the region of Cantabria in the northern Spain, describing first the main factors involved. The study is based on nine sets of aerial photographs and orthophotos ranging from 1956 to 2014 for each site, overlapped and elaborated through the software ArcGIS; the digital work allowed the calculation of the rates of migration for each interval of time along with the computation of the surface extent of each dune field. The results indicate that as general trend the coastline has retroceded in the last 58 years at average rates of 0.7m/y, but still exist, even within same dune fields, different behaviors, making of each site a complex dynamic system. The interpretation of the results led to the recognition of a rough conceptual model of evolution for each dune field: three out of four respond mainly to natural forces, while the other one migrates because of the anthropogenic pressure. The study here presented constitutes a rough attempt to examine the different processes that are implicated in the formation of large dune fields and, even though 58 years are not enough to delineate a precise evolution trend, it can be useful for future researches about coastal management / Stranddyner utgör ett dynamiskt geomorfologiskt system där flera naturliga processer samverkar, både på kort och på lång tidsskala. Stranddynerna är viktiga då de skapar barriärer som skyddar fastlandet från hög energi vågor och översvämningar. Men dynerna är utsatta för konstant förändring eftersom de är känsliga för erosion och det är av denna anledning som dynerna behöver särskild uppmärksamhet och förvaltning. Uppgifter som inte alltid lätta att genomföra eftersom faktorerna är många. Längs den Kantabriska kusten i norra Spanien finns flera dynfält i samband med flodmynningsmiljöer. Under de senaste decennierna har dessa dynkomplex upplevt erosion på grund av naturliga faktorer så som förändringar i vindar, ytliga vattenströmmar och flodmynningar och på grund av antropisk påverkan som började öka efter andra världskriget och fortsatt fram till idag. Många av förändringarna sker i episodiska intensiva händelser, som stormar, vilket kan skada viktig mänsklig infrastruktur i området. De senaste anmärkningsvärda händelserna inträffade just i januari och februari 2014. Syftet med detta arbete är att analysera utvecklingen av formen och utbredningen av fyra representativa dynfält i regionen Kantabrien i norra Spanien, genom att först beskriva de viktigaste faktorerna som är inblandade. Studien är baserad på nio uppsättningar av flygfoton och ortofoton som sträcker sig från 1956 till 2014 för varje plats. Genom att digitalisera dynernas utbredning i bildmaterialet tillåts beräkning av migrationen av dynfältens gräns och av ytomfattningen för varje tidsintervall. Resultaten tyder på att som allmän trend så har kusten genomsnittligt gått tillbaka 0,7 m/ år under de senaste 58 åren, men variationer förekommer, även inom samma dyn fält, olika beteenden vilket tydliggör att det är ett komplext dynamiskt system. Tolkningen av resultaten har lett till en en grov konceptuell modell av evolution för varje dyn fält där tre av fyra påverkas främst av naturkrafterna, medan den fjärde migrerar på grund av det ökade antropiska trycket. Studien som presenteras utgör ett första försök att undersöka de inblandade processerna i bildandet och utvecklingen av dynfälten, dock är 58 år är inte tillräckligt för att beskriva en tydlig trend, men det kan vara användbart för framtida undersökningar om kustförvaltning.
52

Enregistrements sédimentaires des changements environnementaux séculaires à millénaires par la micro- et la macrofaune benthiques littorales / Sedimentary records of millennial to centennial environmental changes with coastal benthic micro- and macrofauna

Poirier, Clément 29 November 2010 (has links)
Discriminer l'influence des activités humaines de celle des processus naturels sur les changements environnementaux récents est un enjeu scientifique important. Dans ce but, les mollusques et les foraminifères fossiles des Pertuis Charentais (ouest de la France) ainsi que les sédiments déposés pendant l'Holocène dont ils sont issus ont été étudiés. L'objet d'étude central est un drapage vaseux qui constitue une grande partie du comblement sédimentaire terminal des Pertuis. Les résultats obtenus montrent qu'il est composé de sédiments fins d'origine continentale déposés à partir de 1400 AD. Il est la conséquence d'une augmentation de l'érosion des sols, favorisée par la déforestation entreprise au Moyen-Age. Le taux de sédimentation de cette vase a augmenté brutalement, suite à une période d'augmentation des précipitations hivernales à la fin du Petit Age Glaciaire qui a accéléré l'érosion des sols sur ces territoires fragilisés car déforestés. Le dépôt brutal de sédiments fins dans les Pertuis Charentais a eu peu de répercussions sur les communautés de mollusques benthiques, excepté l'extinction locale du bivalve \textit{Lepton squamosum} de la baie de Marennes-Oléron. En revanche, l'augmentation des apports sédimentaires a été à l'origine d'une succession écologique au sein des communautés de foraminifères (résistance - perturbation - adaptation). Les résultats obtenus démontrent comment des milieux perturbés par les activités humaines deviennent plus sensibles aux changements climatiques. Ils soulignent aussi le potentiel de la paléoécologie dans la compréhension des changements environnementaux récents dans les zones côtières à une échelle millénaire à séculaire. / Unraveling the respective influence of human activities and natural processes on recent environmental changes is a critical issue. In this respect, fossil molluscs and foraminifers of the Pertuis Charentais area (western France) as well as the sediments deposited during the Holocene they originate from have been studied. The study is focused on a mud drape that corresponds to the upper, most recent sediment infill of the area. The results show that it is composed of fine grained sediments originating from the adjacent catchments deposited from 1400 AD onwards. This major environmental change was the consequence of an increase in soil erosion promoted by intense deforestation started during the Middle Ages. Mud sedimentation rate increased suddenly in ca. 1760 AD, owing to a short-lived increase of winter rainfall which triggered more intense soil erosion on vulnerable deforested lands. The sharp deposition of fine grained sediments in the Pertuis Charentais has had few consequences on the past benthic mollusc communities, except the local extinction of the bivalve \textit{Lepton squamosum} in the Marennes-Oléron Bay. On the contrary, the increase in mud supply has triggered an ecological succession among benthic foraminifer communities (resistance - disturbance - adaptation). As a whole, the results demonstrate that environments disrupted by human activities become more sensitive to high-frequency climate changes. They also highlight the potential of paleoecology for a better understanding of recent environmental changes occurring within coastal areas at a millennial to centennial scale.
53

A Million Metaphors for Love: Mending Posthuman Heartache in the Anthropocene

Ramsey, Anna Brooks, Ramsey, Anna Brooks January 2017 (has links)
In this research, I investigate multiple entry points for understanding and developing art and visual culture curriculum to respond to the Anthropocene. Informed by posthuman, feminist, and ecological theories, I ask what practices and theory art educators might take up to cultivate emergent artistic practices with students toward responding to the geological, social, and present moment. Organized around integrating visual art into school and community garden sites, this writing includes curriculum theory, a unit design and reflections on implementation and the writing process. Using autoethnographic and visual art methodologies, I attempt to engage the subjective relational space between myself, my psyche, and the phenomenon of teaching, writing, and embodying this curriculum. Through this research, I wanted to know whether co-facilitating with human and non-human members of school gardens would stabilize affective and relational containers of care and stewardship as part of the learning environment. To this end, I found that co-facilitating with place, including the garden, is a stabilizing environment for myself as a teacher, but can also be conducive to perpetuating Western and white narratives of place. Another central theme and finding from this data was the lived experiences of grief. Employing autoethnography (Ellis & Bochner, 2000), I reflected on my teaching through my psyche, body, and emotions. I found and analyzed this data through present moment awareness of my embodied response to the experience of writing and facilitating a four-week art curriculum with middle school girls in their school garden. As an emergent response to this grief, I have therefore organized my writing around the notion of mending posthuman heartache in the Anthropocene. This is a call I believe educators should take seriously. The Anthropocene moment is in so many ways the result of deep disconnection and separation, years of violence against the planet, and against humanity in the forms of colonization, patriarchy, white-supremacy, and capitalism. I hope for this research to contribute to animating art and visual culture education toward affective and critical ecological solutions to the moment we are living in. The implications of this research are not empirical in nature, but rather take up poetic, artistic, and enigmatic qualities of the present to tease out ways of being with, working against, and creatively responding to these times in which we live. To conclude, I believe any practices that cultivate care and affective relationship to place, self, and the other members of our human/non-human communities, such as visual art and gardening practices, can serve as containers and resources for living in the Anthropocene.
54

What Matter(s) in Education Beyond the Human?: Learning as Sympoietic Storyworlding

January 2020 (has links)
abstract: The current sustainability crisis is born from a specious notion that humans are separate from and in a position of control over nature. In response, this dissertation reconceptualizes education beyond its current anthropocentric model to imagine education as learning through relationality with all that is ‘beyond’ the human. The study leaves behind hegemonic binary distinctions (human/nature, teacher/student, formal/non-formal education) to reimagine education as a multidirectional process of learning as worlding and becoming-with Earth (Haraway, 2016a). It explores what matters in education and how it comes to matter. This dissertation introduces the concept of storyworlding to describe what occurs when multispecies, multi-mattered assemblages (re)write Earth’s narratives through their relationships with one another. Taking its inspiration from the work of the Common Worlds Research Collective, Donna Haraway, and Isabelle Stengers, storyworlding acknowledges that the relationships between and among all biotic and abiotic forces on Earth make stories through their interactions, and these stories make a pluriverse of worlds. The study is structured as a natureculture (Haraway, 2003) ethnography. This innovation on ethnography, a traditionally human-centered method, focuses on agential, multispecies/ multi-mattered assemblages rather than the description of human culture. Data is not generated and then labeled as fixed in this study. It is emergent in its assemblages as a co-narrator in sympoietic storyworlding (Haraway, 2016b). Data generation took place over 6 months in a small, coffee-producing region of Southeastern Brazil. Data generation methods included walking conversations with children and the more-than-human world, participation in a multi-grade, one-room schoolhouse, and the collection of visual and audio data such as drawings, photographs, videos, and audio recordings. Using an intentionally slow, messy, and fluid diffractive analysis, I follow the data where it leads as I think with the concept of storyworlding (Barad, 2007; Mazzei, 2014). Drawing inspiration from Donna Haraway, Isabelle Stengers, and Iveta Silova, the dissertation concludes with an Epilogue of speculative fabulation (SF) imaginings through which I invite the reader to engage in the thought experiment of reimagining not only what matters in education, but what education, itself, is. / Dissertation/Thesis / Doctoral Dissertation Educational Leadership and Policy Studies 2020
55

The Costs of Modernity : How a historical steampunk fantasy such as The Kingston Cycle can successfully portray the intersectional origins of the Capitalocene

Persson Örtman, Lisa January 2021 (has links)
There is a growing recognition of the interconnectedness of the crises of food, water, democracy and climate change as stemming from the capitalist hunt for modernity and progress. As climate change is thus not only so complex, but urgent, the question of a successful portrayal of it for an enhanced understanding and subsequent action becomes vital. The name of the Capitalocene functions to highlight the intersectional origins of climate change - as the Global North has done violence upon nature in the quest for monetary value, so has it also done violence upon people in the process. The Kingston Cycle is part of a fast-rising wave of speculative fiction with the potential to successfully communicate not only an encompassing picture of the acknowledgedly incomprehensive totality of the current crisis, but also the solution in the form of an egalitarian society founded on the value of community instead of capital. As writers are thus beginning to discover the suitability of speculative fiction to depict the Capitalocene, especially spatiotemporal combinations of genres such as historical steampunk fantasy, it is necessary for scholars to follow in order to breach the hitherto persisting view of speculative fiction as simply an escape from reality, and to investigate how it can be used to create not only an understanding of the current crisis, but an incentive to action.
56

The Heritage : A personal study of the brooch as a signal surface

Skärlund, Eva January 2020 (has links)
This paper looks at how I as a jeweller can use my craft knowledge to raise awareness of environmental issues. In our society we are informed on a daily basis how elevated average temperatures, melting glaciers and forest fires affect and will affect our future, but also future generations’ living conditions on earth. Despite this, most of us just try to live our lives as usual. But all this information worries me, mostly for the future of my children, and I don’t know how to relate to it. I think about what inheritance I will leave behind. In this paper, I explore how I, in my role as a jewellry artist, can contribute to the discussion about the climate. To investigate this, I use theories of semiotics and visual communication as a frame for my work and I have chosen to dig where I stand and use work methods that I can find at home, but which I can also link to my profession as a jeweller. I have collected plastic  packaging that is the result of my family’s consumption. With this as a starting point, I have created plastic stones that leads my thoughts to future fossils and the Anthropocene era. My main tool has been the iron, with which I have achieved heat and a certain pressure to mimic the conditions under which minerals in nature are created. The plastic stones were made into brooches and the work has finally resulted in pictures where my children wear the brooches I have made of our common waste. Both the brooches and the images are linked to the theoretical framework of the paper.
57

Právní princip trvale udržitelného rozvoje jako odpověď na změnu klimatu / The legal principle of sustainable development in response to the climate change

Orlandin, Piero January 2020 (has links)
The legal principle of sustainable development in response to the climate change Abstract The ongoing climate change is a serious global problem of today's world. The impacts of this change on the environment and humankind together with the climatic sources of law on the international, EU and national level, were the objects of research of the first half of the introductory part of this master's thesis. The second half of the first part of the text introduces sustainable development as a sui generis solution, both as a general concept and as a legal principle according to the valid Czech law. Subsequently, the second part of the thesis conducts analysis of selected climate-sustainable institutes that respected the principles of sustainable development from the perspective of three different European countries. These specific approaches, which were demonstrated with the selected countries, subsequently serve as an inspiration for the synthesis in the final part of the thesis. In it, a recapitulation of the selected current climatic threats was undertaken, to which the author offers a solution through specific sustainable ways of functioning in the world's major socio-economic sectors. Subsequently, a similar analysis was performed on selected socio-economic sectors of the Czech Republic, which the author...
58

International Environmental Governance in the Anthropocene : A Shift Towards Ecocentrism?

Klatt, Mareike January 2021 (has links)
We live in the Anthropocene – the Age of Humans – characterized by dangerous environmental degradation, demanding urgent and adequate international environmental governance (IEG). Yet, IR scholarship problematizes the shortcomings of current IEG, demonstrating its failure to fight environmental degradation. During the Covid-19 pandemic, the UNDP published the 2020 Human Development Report titled ‘The next frontier – Human Development in the Anthropocene’. A preliminary reading suggests a shift towards ecocentric governance. Inspired by this development, this study situates itself within the literature on Adaptive Governance in the Anthropocene. It explores if IEG is indeed adopting ecocentrism, thereby adapting to the conditions and demands of the 21st century. Complementing UNDP with two additional cases (UNEP and WHO), this research attempts to provide an updated understanding of the state of IEG in 2020/21 through qualitative content analysis of flagship reports. Green Theory and scholarship on IEG and the Anthropocene will be utilized to construct the research design, as well as to assess the content and meaning of the results. The research findings suggest that UNDP, UNEP, and WHO adopt ecocentrism norms, albeit with certain gradations present. This study attempts to complement the governance literature and take a stand regarding the status of IR in the Anthropocene.
59

The Midstream Collective / Collective Midstream

Gasson, Julian January 2022 (has links)
How do we hold each other through a change of phase? This is the seminal question asked in this thesis as it explores networked systems populated by urban metabolisms and waste streams. Using an embodied feminist framework, this paper attempts to highlight short comings in the current treatment of road snow sludge in the metropolitain areas of Stockholm, Sweden and proposes the use of a systemic, intergrated mycological strategy to filter and detoxify snow-melt-water before it re-enters natural bodies of water.
60

The Anthropocene: An Intersectional Critique. Uncovering Narratives and Forming New Subjects in a Time of Environmental Change.

Thöresson, Sanna January 2021 (has links)
In this theoretical study, I apply a historiographical approach to examine the development of the Anthropocene as a concept and its use across disciplines and through time. Using a synthesis of the literature of the Anthropocene, I uncover eight “hidden” narratives that are embedded within its discourse, and further link these to European humanist thought and the creation of subject and Other. I use these narratives to inform my intersectional analysis, wherein subjects are formed through the interplay between identity construction, symbolic representations, and social structures. These levels provide a framework with which to examine subject formation, with a special focus on the dimensions of coloniality, class, gender, and race within the discourse of the Anthropocene. By applying an intersectional perspective, I discuss who the subjects of the Anthropocene are presented as and how they are created. Finally, I apply posthuman perspectives to discuss how and why subject formation must be made more complex. I argue that subject formation in the Anthropocene must better adhere to relationalities between humans – as well as between humans and the more-than- human world – if we are to effectively envision alternative trajectories away from the current ecological and social crises that define this time of environmental change.  The main contributions of this study are thus: (1) a review and synthesis of literature on the Anthropocene, (2) an identification of eight narratives that are embedded in the discourse surrounding the term, and (3) an analysis that applies intersectional and posthuman perspectives to subject formation within the discourse of the Anthropocene.

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