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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.
141

Empreendimentos hidrelétricos e a complexidade de sistemas socioecológicos locais: o caso da usina hidrelétrica de Barra Grande / Hydropower plants and the complexity of local social-ecological systems: a case study of the Barra Grande hydropower plant

Daniel Rondinelli Roquetti 30 July 2013 (has links)
A literatura que descreve os efeitos locais de empreendimentos hidrelétricos tem recebido contribuições importantes nos últimos anos. Esses trabalhos, contudo, lançam perspectivas disciplinares sobre essa problemática. O presente estudo busca compreender tais efeitos de maneira integrada, partindo de uma perspectiva sistêmica associada à teoria da resiliência em sistemas socioecológicos. Para tal, adota o caso da usina hidrelétrica de Barra Grande, analisando de que forma a dinâmica do sistema socioecológico local diretamente afetado pela barragem transformou-se na época de sua implantação. Assim, o sistema socioecológico local fora conceitualmente modelado e caracterizado para todo o ciclo de implantação da usina de Barra Grande, por meio da coleta de dados e informações primários e secundários. Como principais resultados, estão a concentração de alterações mais significativas nas proximidades do eixo da barragem, a criação de novos atratores para o sistema econômico local, a profunda alteração de aspectos do sistema social e a depleção da resiliência dos ecossistemas afetados pela barragem. / The literature that describes the local effects of undertaking hydropower plants has received important contributions in the past few years. These efforts, however, are based on disciplinary approaches. His study aims to understand the local effects of undertaking hydropower plants in an integrated way, following a systemic approach related to the theory of social-ecological systems resilience. O accomplish that, it is adopted the case of the Barra Grande dam, analyzing the changes in the dynamics of the local social-ecological system directly affected by the dam. The local social-ecological system was conceptualy modeled and designed for the entire projects lifecycle. It was made through collecting primary and secondary data. As maisn results, there are the concentration of significant alterations in the surroundings of the dams axis, the creation of new attractors for the economic system, a deep change in the social systems aspects and the depletion of the resilience of the ecosystems directly affected by the dam.
142

An idea whose time has come : an innovation perspective on Marine Spatial Planning

Merrie, Andrew January 2011 (has links)
This study considers the emergence of Marine Spatial Planning as a tool for ecosystem-basedmanagement using an innovation diffusion perspective that combines elements of classical diffusionof innovations theory with a consideration of individual and networked agency and cross-scaledynamics in the context of a social-ecological systems perspective. The main findings are that thediffusion of Marine Spatial Planning does not follow a linear, technologically deterministic process asindicated by many diffusion of innovation studies but instead the diffusion process can becharacterised by a hybrid diffusion system that cascades over a series of phases and where individualsembedded in informal networks play a key role in driving the emergence of Marine Spatial Planningacross scales.This study provides a valuable contribution to considering how the study of innovation and diffusiondynamics could be applied to provide explanatory power when considering innovations that gobeyond being technological that might emerge in the context of addressing challenges facing linkedsocial-ecological systems at the global level and thus assist in resolving the mismatches between thescale of ecological processes and the governance of ecosystems to ensure an ongoing delivery ofecosystem services. These innovations are also important to study in the context of innovation being acatalyst for transformation of marine social-ecological systems to a more sustainable trajectory.
143

The Need for and Meaning of Social Ecological Economics

Spash, Clive L. 03 1900 (has links) (PDF)
Ecological economics has arisen over a period of three decades with a strong emphasis on the essential need to recognise the embeddedness of the economy in the biophysical. However, that element of realism is not matched by an equally well informed social theory. Indeed the tendency has been to adopt mainstream economic concepts, theories and models formulated of the basis of a formal mathematical deductivist approach that pays little or no attention to social reality. Similarly mainstream economic methods are employed as pragmatic devices for communication. As a result ecological economics has failed to develop its own consistent and coherent theory and failed to make the link between the social and the economic. In order to reverse this situation the social and political economy must be put to the fore and that is the aim of social ecological economics. This paper provides a brief overview of the arguments for such a development. The prospect is of unifying a range of critical thought on the social and environmental crises with the aim of informing the necessary social ecological transformation of the economy. / Series: SRE - Discussion Papers
144

Remedios de mi tierra: An Oral History Project on the Changes and Continuity of the Traditional Healing Knowledge and Practices of a Mexican Immigrant Mother from Guanajuato, Mexico

Saldana Perez, Joel Angel, Saldana Perez, Joel Angel January 2017 (has links)
This thesis looks at the impact of migration and place on the traditional healing knowledge and practices of a Mexican immigrant mother from Guanajuato, Mexico: Sofia Perez. Through the use of oral history methodology and the application of the Traditional Ecological Knowledge and Wisdom (TEKW) model and the Social Ecological Model (SEM) to analyze the narratives, this study looks at the origin of Sofia's healing knowledge and practices and at how she has managed to keep these traditions alive despite migrating to the United States and living in a society that may not believe in the efficacy of these healing traditions. The application of the Traditional Ecological Knowledge and Wisdom (TEKW) model provided insight into the healing traditions of Sofia's home community and the ways in which these were learned, practiced, and preserved and proved useful in looking at how this was done by Sofia before and after migrating. Next, the Social Ecological Model (SEM) proved useful in looking at how place and its various social, cultural, and ecological aspects have influenced Sofia's use of traditional medicine since she migrated. Overall, Sofia's knowledge and practices have been impacted by migration and place; however, she continues to practice these traditions as best as she can.
145

Development and Resilience : Re-thinking poverty and intervention in biocultural landscapes

Haider, L. Jamila January 2017 (has links)
The practices related to the growing, harvesting, preparation, and celebration of food over millennia have given rise to diverse biocultural landscapes the world over. These landscapes – rich in biological and cultural diversity – are often characterised by persistent poverty, and, as such, are often the target of development interventions. Yet a lack of understanding of the interdependencies between human well-being, nature, and culture in these landscapes means that such interventions are often unsuccessful - and can even have adverse effects, exacerbating the poverty they were designed to address. This thesis investigates different conceptualisations of persistent poverty in rural biocultural landscapes, the consequences of these conceptualisations, and the ways in which development interventions can benefit from, rather than erode, biocultural diversity. The thesis first reviews conceptualisations of persistent poverty and specifically, the notion of a poverty trap (Paper I), and examines the consequences of different conceptualisations of traps for efforts to alleviate poverty (Paper II). Paper I argues that the trap concept can be usefully broadened beyond a dominant development economics perspective to incorporate critical interdependencies between humans and nature. Paper II uses multi-dimensional dynamical systems models to show how nature and culture can be impacted by different development interventions, and, in turn, how the degradation of both can undermine the effectiveness of conventional poverty alleviation strategies in certain contexts. In the second section, the thesis focuses on the effects of, and responses to, trap-like situations and development interventions in a specific context of high biocultural diversity: the Pamir Mountains of Tajikistan. Paper III advances a typology of responses to traps based around the mismatch of desires, abilities and opportunities. Observing daily practice provides a way to study social-ecological relationships as a dynamic process, as practices can embody traditional and tacit knowledge in a holistic way.  Paper IV examines the diverse effects of a development intervention on the coevolution of biocultural landscapes and the ways in which everyday practice – particularly around food – can be a source of both innovation and resilience. Papers I-IV together combine insights from diverse disciplines and methodologies, from systematic review to dynamic systems thinking and participant observation. Paper V provides a critical analysis of the opportunities and challenges involved in pursuing such an approach in sustainability science, underscoring the need to balance methodological groundedness with epistemological agility. Overall, the thesis contributes to understanding resilience and development, highlighting the value of viewing their interrelation as a dynamic, coevolving process. From this perspective, development should not be regarded as a normative endpoint to be achieved, but rather as a coevolving process between constantly changing ecological and social contexts. The thesis proposes that resilience can be interpreted as the active and passive filtering of practices via the constant discarding and retention of old and new, social and ecological, and endogenous and exogenous factors. This interpretation deepens understanding of resilience as the capacity to persist, adapt and transform, and ultimately shape new development pathways. The thesis also illustrates how daily practices, such as the growing, harvesting, and preparation of food, offer a powerful heuristic device for understanding this filtering process, and therefore the on-going impact of development interventions in rural landscapes across the world. / <p>At the time of the doctoral defense, the following paper was unpublished and had a status as follows: Paper 4: Manuscript.</p>
146

Approaching the Pollinator Problem Through Human-Bee Relations: Perspectives & Strategies in Beekeeping

Bero, Ursula January 2017 (has links)
Beekeepers help to secure the pollination capacity of bees by mediating bee-stressors. This study argues that beekeeper strategies are best conceptualized as a series of specialized practices for bettering bee-health, which are mobilized by a variety of actors, including those who are not traditionally considered ‘beekeepers’. The aim of this paper is to explore those human beliefs and practices which are most relevant for gaining insight into the current pollinator problem. Farmers, bee-conservationists, bee-researchers and honeybee-keepers all play an important role in securing bee health. The paper draws on the social-ecological perspective to consider alternative definitions of caring for bees, what shapes these conceptualizations and how these are reflected in beekeeper strategies, which inevitably contribute to the overall functioning of human-bee constituted systems. In the context of rising honeybee colony losses in Canada and of wild bee decline around the world, understanding the diversity of approaches for bettering bee-health is exceedingly important for initiating long-term, sustainable and multi-level bee-pollinator conservation.
147

Fysisk förmåga hos värnpliktiga ungdomar : En kvalitativ studie om förutsättningar och påverkansfaktorer ur Försvarsmaktsanställdas perspektiv

Gerhardsson, Anna January 2020 (has links)
Bakgrund: Brist på daglig fysisk aktivitet ökar risken för folksjukdomar samt påverkar ungdomars fysiska förmåga negativt. Ungdomar som gör värnplikten i Försvarsmakten behöver ha en viss nivå av fysisk förmåga för att klara av krav och träning som militärtjänstgöring kräver. Social Ecological Model används för att förklara hur ungdomars fysiska förmåga påverkas av många faktorer i ungdomarnas omgivning. Syfte: Studiens syfte är att studera vilka uppfattningar anställda i Försvarsmakten har kring förutsättningar och påverkansfaktorer för ungdomars fysiska förmåga innan och under värnplikten. Metod: Studien har använt en kvalitativ metod och semistrukturerade telefonintervjuer har genomförts med tre anställda inom Försvarsmakten. Data har analyserats med manifest innehållsanalys. Resultat: Skolidrott samt förberedelser lyfts fram som förutsättningar inför värnplikten medan tidig elitsatsning och idrottsspecialisering upplevs som problem för den fysiska förmågan innan värnplikten. Ungdomars fysiska förmåga under värnplikten upplevs ha försämrats och skador är vanligt. Under värnplikten påverkas den fysiska förmågan av kravnivåer, träning samt psykiskt välmående. Slutsats: För att förbättra ungdomars förutsättningar innan samt höja den fysiska förmågan under värnplikten krävs att skolan, föreningsidrotten och Försvarsmakten möjliggör ungdomars fysiska aktivitet. I bedömningen av den fysiska förmågan under värnplikten måste även krav, träning och psykiska påverkansfaktorer beaktas.
148

A Social-Ecological System Approach for Forest Resource Management of the Himchari National Park in Bangladesh

January 2020 (has links)
abstract: Deforestation is a common phenomenon in Bangladesh, leaving the country under a great threat of losing its natural habitat. The increasing rate of natural habitat loss has raised questions regarding the country’s forest resource management practices. These practices were originally adopted to protect the forest ecosystem and secure the livelihood of the people dependent on forest resources. Despite the support from development partners like the United States Agency for International Development (USAID), the country is still struggling to protect its forest resources from human encroachment. One of the major problems is the lack of inconclusiveness in current approaches. Most initiatives are not evidence-based and are project-based for only a certain period of time. This has failed to ensure sustainable outcomes. This study looks at Bangladesh’s Himchari National Park forest management system to generate evidence regarding deforestation from 1991-2018 and highlight existing gaps. To identify and analyze the gaps, the study uses a social-ecological system (SES) lens. Results reveal deforestation across different time periods, articulates the overall governance structure regarding forest resource management, and provides an overview of the major gaps within the system. The study also offers a set of recommendations for improving the existing management system and policy implications. / Dissertation/Thesis / Masters Thesis Urban and Environmental Planning 2020
149

Patch to Landscape and Back Again: Three Case Studies of Land System Architecture Change and Environmental Consequences from the Local to Global Scale

January 2020 (has links)
abstract: Humans have modified land systems for centuries in pursuit of a wide range of social and ecological benefits. Recent decades have seen an increase in the magnitude and scale of land system modification (e.g., the Anthropocene) but also a growing recognition and interest in generating land systems that balance environmental and human well-being. This dissertation focused on three case studies operating at distinctive spatial scales in which broad socio-economic or political-institutional drivers affected land systems, with consequences for the environmental conditions of that system. Employing a land system architecture (LSA) framework and using landscape metrics to quantify landscape composition and configuration from satellite imagery, each case linked these drivers to changes in LSA and environmental outcomes. The first paper of this dissertation found that divergent design intentions lead to unique trajectories for LSA, the urban heat island effect, and bird community at two urban riparian sites in the Phoenix metropolitan area. The second paper examined institutional shifts that occurred during Cuba’s “special period in time of peace” and found that the resulting land tenure changes both modified and maintained the LSA of the country, changing cropland but preserving forest land. The third paper found that globalized forces may be contributing to the homogenizing urban form of large, populous cities in China, India, and the United States—especially for the ten largest cities in each country—with implications for surface urban heat island intensity. Expanding knowledge on social drivers of land system and environmental change provides insights on designing landscapes that optimize for a range of social and ecological trade-offs. / Dissertation/Thesis / Doctoral Dissertation Geography 2020
150

Law Enforcement Perception of Social Media as an Influence in Mass Shootings

Parker, Jazma Mekelle 01 January 2019 (has links)
Mass shootings have been a persistent issue in the United States, and the underlying factors that continue to influence this crime are not yet evident. This study explored the effects of social media as an influence on mass shootings in the United States. Its purpose was to address the role of social media in spreading opinionated ideologies. The research question addressed the role of social media in influencing the actions of perpetrators of mass shootings in the United States. The study framework was based on the social-ecological model to facilitate classification of the susceptibilities of social media users to adverse ideologies; 7 experts on mass shootings were interviewed in the study. Findings revealed that social media tend to influence mass shooting in 4 capacities: as enablers of the conceptualization process of the crime until the final act of mass violence; as facilitators of the individual or personal agenda of the mass shooter; as platforms that harness emerging technology for knowledge building during the planning phase and create operational efficiency for the final act; and as coordinators of group or symphonic terrorism. Government authorities in charge of combating mass shootings perform their tasks through actionable intelligence, legislation and policy, training of police and other first responders, mechanical barriers or deterrents, and brainstorming for new techniques and strategies. They are, however, constrained by considerable odds, which often come conjointly with their methods of crime resolution and strategies. Predictive technologies, as vehicles to fight or prevent mass shootings, have limiting influences on government action, particularly relating to the First and Fourth Amendments and the culture of hate that is nurtured and sustained through social media.

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