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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.
241

Validation of Mechanical Response Tissue Analysis by Three-Point Mechanical Bending of Artificial Human Ulnas

Arnold, Patricia A. 03 June 2013 (has links)
No description available.
242

Comparison of Cortical Porosity, Diameter, and Stiffness as Predictors of Ulna Bending Strength

Hausfeld, Gabrielle Christine 30 April 2015 (has links)
No description available.
243

Связь психологического благополучия и личностных особенностей в контексте понимания человека как открытой саморазвивающейся системы : магистерская диссертация / The relationship between psychological well-being and personal characteristics in the context of understanding a person as an open self-developing system

Долгошеина, А. А., Dolgosheina, A. A. January 2024 (has links)
Объектом исследования является психологическое благополучие студентов. Предметом исследования стала связь психологического благополучия студентов с личностными особенностями, которые являются показателями открытости психологической системы (ригидность, флексибильность, когнитивная закрытость, локус контроля). Магистерская диссертация состоит из введения, двух глав, заключения, списка литературы (103 источника) и приложения, включающего в себя сводную таблицу результатов корреляционного анализа. Объем магистерской диссертации 86 страниц, на которых размещены 2 рисунка и 9 таблиц. Во введении раскрывается актуальность проблемы исследования, разработанность проблематики, ставятся цель и задачи исследования, определяются объект и предмет исследования, формулируются гипотезы, указываются методики для проведения эмпирического исследования. Первая глава включает в себя обзор иностранной и отечественной литературы по теме психологического благополучия, ригидности, флексибильности, когнитивной закрытости и локуса контроля. Представлены разделы, посвященные исследованию подходов к пониманию термина «благополучие» и основных факторов психологического благополучия; понятия самореализации в рамках системного подхода; специфики континуума «ригидность – флексибильность», когнитивной закрытости и локуса контроля, как показателей открытости психологической системы человека. Выводы по первой главе представляют собой итоги по изучению теоретического материала. Вторая глава посвящена эмпирической части исследования. В ней представлено описание методов проведенного исследования и результатов, полученных по всем использованным методикам: опросник Шкала психологического благополучия К. Рифф, Томский опросник ригидности В. Залевского, Опросник когнитивной флексибильности J.Dennis, J. VanderWal, опросник Стремление к когнитивной закрытости D. Webster, A. Kruglanski, шкала Локуса контроля Дж. Роттера. Также в главе представлен корреляционный анализ результатов исследования. Выводы по главе 2 включают в себя основные результаты эмпирического исследования. В заключении в обобщенном виде изложены результаты теоретической и эмпирической частей работы, а также выводы по выдвинутым гипотезам. / The object of the study is the psychological well-being of students. The subject of the study was the relationship of students' psychological well-being with personal characteristics, which are indicators of the openness of the psychological system (rigidity, flexibility, cognitive closeness, locus of control). The master's thesis consists of an introduction, two chapters, a conclusion, a list of references (103 sources) and an appendix, which includes a summary table of the results of correlation analysis. The volume of the master's thesis is 86 pages, which contain 2 figures and 9 tables. The introduction reveals the relevance of the research problem, the elaboration of the problem, sets the purpose and objectives of the study, defines the object and subject of the study, formulates hypotheses, specifies methods for conducting empirical research. The first chapter includes a review of foreign and domestic literature on the topic of psychological well-being, rigidity, flexibility, cognitive closure and locus of control. The sections devoted to the study of approaches to understanding the term "well-being" and the main factors of psychological well–being; the concept of self-realization within the framework of a systematic approach; the specifics of the continuum "rigidity - flexibility", cognitive closeness and locus of control as indicators of the openness of the human psychological system are presented. The conclusions of the first chapter represent the results of the study of theoretical material. The second chapter is devoted to the empirical part of the study. It describes the methods of the study and the results obtained using all the methods used: K. Riff Scale of Psychological Well-being questionnaire, V. Zalevsky Tomsk Rigidity Questionnaire, J.Dennis, J. VanderWal Cognitive Flexibility Questionnaire, D. Webster, A. Kruglanski, J. Webster Locus Control scale. Rotter. The chapter also presents a correlation analysis of the results of the study. The conclusions of Chapter 2 include the main results of the empirical study. In conclusion, the results of the theoretical and empirical parts of the work, as well as conclusions on the hypotheses put forward, are summarized.
244

LHCb Upstream Tracker box : Thermal studies and conceptual design

Mårtensson, Oskar January 2016 (has links)
The LHC (Large Hadron Collider) will have a long shut down in the years of 2019 and 2020, referred to as LS2. During this stop the LHC injector complex will be upgraded to increase the luminosities, which will be the first step of the high luminosity LHC program (which will be realized during LS3 that takes place in 2024-2026). The LHCb experiment, whose main purpose is to study the CP-violation, will during this long stop be upgraded in order to withstand a higher radiation dose, and to be able to read out the detector at a rate of 40MHz,compared to 1MHz at present. This change will improve the trigger efficiency significantly. One of the LHCb sub-detectors the Trigger Tracker (TT), will be replaced by a new sub-detector called UT. This report presents the early stage design (preparation for mock-up building) of the box that will be isolating the new UT detector from the surroundings and to ensure optimal detector operation. Methods to fulfill requirements such as light and gas tightness, Faraday-cage behavior and condensation free temperatures, without breaking the fragile beryllium beam pipe, are established. / LHC (Large Hadron Collider) kommer under åren 2019-2020 att ha ett längre driftstopp. Under detta driftstopp så kommer LHC's injektionsanordningar att uppgraderas för att kunna sätta fler protoner i circulation i LHC, och därmed öka antalet partikelkollisioner per tidsenhet. Denna uppgradering kommer att vara första steget i "High Luminocity LHC"-programmet som kommer att realiseras år 2024-2026. LHCb-experimentet, vars främsta syfte är att studera CP-brott, kommer också att uppgraderas under stoppet 2019-2020. Framför allt så ska avläsningsfrekvensen ökas från dagens 1MHz till 40MHz, och experimentet ska förberedas för de högre strålningsdoser som kommer att bli aktuella efter stoppet 2024-2026. En av LHCb's deldetektorer, TT detektorn, kommer att bytas ut mot en ny deldetektor som kallas UT. Den här rapporten presenterar den förberedande designen av den låda som ska isolera UT från dess omgivning och försäkra optimala förhållanden för detektorn. Kraven på den isolerande lådan och tillvägagångssätt för att uppfylla dessa krav presenteras. / LHCb, LS2 and LS3 Upgrade
245

Essays on optimal fiscal and monetary policies

Kiarsi, Mehrab 01 1900 (has links)
Cette thèse se compose de trois articles sur les politiques budgétaires et monétaires optimales. Dans le premier article, J'étudie la détermination conjointe de la politique budgétaire et monétaire optimale dans un cadre néo-keynésien avec les marchés du travail frictionnels, de la monnaie et avec distortion des taux d'imposition du revenu du travail. Dans le premier article, je trouve que lorsque le pouvoir de négociation des travailleurs est faible, la politique Ramsey-optimale appelle à un taux optimal d'inflation annuel significativement plus élevé, au-delà de 9.5%, qui est aussi très volatile, au-delà de 7.4%. Le gouvernement Ramsey utilise l'inflation pour induire des fluctuations efficaces dans les marchés du travail, malgré le fait que l'évolution des prix est coûteuse et malgré la présence de la fiscalité du travail variant dans le temps. Les résultats quantitatifs montrent clairement que le planificateur s'appuie plus fortement sur l'inflation, pas sur l'impôts, pour lisser les distorsions dans l'économie au cours du cycle économique. En effet, il ya un compromis tout à fait clair entre le taux optimal de l'inflation et sa volatilité et le taux d'impôt sur le revenu optimal et sa variabilité. Le plus faible est le degré de rigidité des prix, le plus élevé sont le taux d'inflation optimal et la volatilité de l'inflation et le plus faible sont le taux d'impôt optimal sur le revenu et la volatilité de l'impôt sur le revenu. Pour dix fois plus petit degré de rigidité des prix, le taux d'inflation optimal et sa volatilité augmentent remarquablement, plus de 58% et 10%, respectivement, et le taux d'impôt optimal sur le revenu et sa volatilité déclinent de façon spectaculaire. Ces résultats sont d'une grande importance étant donné que dans les modèles frictionnels du marché du travail sans politique budgétaire et monnaie, ou dans les Nouveaux cadres keynésien même avec un riche éventail de rigidités réelles et nominales et un minuscule degré de rigidité des prix, la stabilité des prix semble être l'objectif central de la politique monétaire optimale. En l'absence de politique budgétaire et la demande de monnaie, le taux d'inflation optimal tombe très proche de zéro, avec une volatilité environ 97 pour cent moins, compatible avec la littérature. Dans le deuxième article, je montre comment les résultats quantitatifs impliquent que le pouvoir de négociation des travailleurs et les coûts de l'aide sociale de règles monétaires sont liées négativement. Autrement dit, le plus faible est le pouvoir de négociation des travailleurs, le plus grand sont les coûts sociaux des règles de politique monétaire. Toutefois, dans un contraste saisissant par rapport à la littérature, les règles qui régissent à la production et à l'étroitesse du marché du travail entraînent des coûts de bien-être considérablement plus faible que la règle de ciblage de l'inflation. C'est en particulier le cas pour la règle qui répond à l'étroitesse du marché du travail. Les coûts de l'aide sociale aussi baisse remarquablement en augmentant la taille du coefficient de production dans les règles monétaires. Mes résultats indiquent qu'en augmentant le pouvoir de négociation du travailleur au niveau Hosios ou plus, les coûts de l'aide sociale des trois règles monétaires diminuent significativement et la réponse à la production ou à la étroitesse du marché du travail n'entraîne plus une baisse des coûts de bien-être moindre que la règle de ciblage de l'inflation, qui est en ligne avec la littérature existante. Dans le troisième article, je montre d'abord que la règle Friedman dans un modèle monétaire avec une contrainte de type cash-in-advance pour les entreprises n’est pas optimale lorsque le gouvernement pour financer ses dépenses a accès à des taxes à distorsion sur la consommation. Je soutiens donc que, la règle Friedman en présence de ces taxes à distorsion est optimale si nous supposons un modèle avec travaie raw-efficace où seule le travaie raw est soumis à la contrainte de type cash-in-advance et la fonction d'utilité est homothétique dans deux types de main-d'oeuvre et séparable dans la consommation. Lorsque la fonction de production présente des rendements constants à l'échelle, contrairement au modèle des produits de trésorerie de crédit que les prix de ces deux produits sont les mêmes, la règle Friedman est optimal même lorsque les taux de salaire sont différents. Si la fonction de production des rendements d'échelle croissant ou decroissant, pour avoir l'optimalité de la règle Friedman, les taux de salaire doivent être égales. / This dissertation consists of three essays on optimal fiscal and monetary policies. In the first two essays, I consider New Keynesian frameworks with frictional labor markets, money and distortionary income tax rates. In the first one, I study the joint determination of optimal fiscal and monetary policy and the role of worker's bargaining power on this determination. In the second one, I study the effects of worker’s bargaining power on the welfare costs of three monetary policy rules, which are: inflation targeting and simple monetary rules that respond to output and labor market tightness, with and without interest-rate smoothing. In the third essay, I study the optimality of the Friedman rule in monetary economies where demand for money is motivated by firms, originated in a cash-in-advance constraint. In the first essay, I find that when the worker’s bargaining power is low, the Ramsey-optimal policy calls for a significantly high optimal annual rate of inflation, in excess of 9.5%, that is also highly volatile, in excess of 7.4%. The Ramsey government uses inflation to induce efficient fluctuations in labor markets, despite the fact that changing prices is costly and despite the presence of time-varying labor taxes. The quantitative results clearly show that the planner relies more heavily on inflation, not taxes, in smoothing distortions in the economy over the business cycle. Indeed, there is a quite clear trade-off between the optimal inflation rate and its volatility and the optimal income tax rate and its variability. The smaller is the degree of price stickiness, the higher are the optimal inflation rate and inflation volatility and the lower are the optimal income tax rate and income tax volatility. For a ten times smaller degree of price stickiness, the optimal rate of inflation and its volatility rise remarkably, over 58% and 10%, respectively, and the optimal income tax rate and its volatility decline dramatically. These results are significant given that in the frictional labor market models without fiscal policy and money, or in the Walrasian-based New Keynesian frameworks with even a rich array of real and nominal rigidities and for even a miniscule degree of price stickiness, price stability appears to be the central goal of optimal monetary policy. Absent fiscal policy and money demand frictions, optimal rate of inflation falls to very near zero, with a volatility about 97 percent lesser, consistent with the literature. In the second essay, I show how the quantitative results imply that worker's bargaining weight and welfare costs of monetary rules are related negatively. That is, the lower the bargaining power of workers, the larger the welfare losses of monetary rules. However, in a sharp contrast to the literature, the rules that respond to output and labor market tightness feature considerably lower welfare costs than the inflation targeting rule. This is specifically the case for the rule that responds to labor market tightness. The welfare costs also remarkably decline by increasing the size of the output coefficient in the monetary rules. My findings indicate that by raising the worker's bargaining power to the Hosios level and higher, welfare losses of the three monetary rules drop significantly and response to output or market tightness does not, anymore, imply lower welfare costs than the inflation targeting rule, which is in line with the existing literature. In the third essay, I first show that the Friedman rule in a monetary model with a cash-in-advance constraint for firms is not optimal when the government to finance its expenditures has access to distortionary taxes on consumption. I then argue that, the Friedman rule in the presence of these distorting taxes is optimal if we assume a model with raw-efficient labors where only the raw labor is subject to the cash-in-advance constraint and the utility function is homothetic in two types of labor and separable in consumption. Once the production function exhibits constant-returns-to-scale, unlike the cash-credit goods model that the prices of both goods are the same, the Friedman is optimal even when wage rates are different. If the production function has decreasing or increasing-returns-to-scale, then to have the optimality of the Friedman rule, wage rates should be equal.
246

Vliv sekuritizace na dynamiku cen bydlení ve Španělsku / Impact of Securitization on House Price Dynamics in Spain

Hejlová, Hana January 2014 (has links)
The thesis tries to explain different nature of the dynamics during the upward and downward part of the last house price cycle in Spain, characterized by important rigidities. Covered bonds are introduced as an instrument which may accelerate a house price boom, while it may also serve as a source of correction to overvalued house prices in downturn. In a serious economic stress, lack of investment opportunities motivates investors to buy the covered bonds due to the strong guarantees provided, which may in turn help to revitalize the credit and housing markets. To address such regime shift, house price dynamics is modelled within a framework of mutually related house price, credit and business cycles using smooth transition vector autoregressive model. Linear behaviour of such system is rejected, indicating the need to model house prices in a nonlinear framework. Also, importance of modelling house prices in the context of credit and business cycles is confirmed. Possible causality from issuance of covered bonds to house price dynamics was identified in this nonlinear structure. Finally, threat to financial stability resulting from rising asset encumbrance both in the upward and downward part of the house price cycle was identified, stressing the need to model impact of the covered bonds on house prices in...
247

A ficção e o real: a importância da educação no século XIX

Corrêa, Giseli Rodrigues 28 April 2009 (has links)
Made available in DSpace on 2016-04-28T19:59:16Z (GMT). No. of bitstreams: 1 Giseli Rodrigues Correa.pdf: 1674548 bytes, checksum: a4215ae4fa42d1e7f0c80426f7dad5f7 (MD5) Previous issue date: 2009-04-28 / Secretaria da Educação do Estado de São Paulo / It is an analysis of the education process in the formation of the youth in the XIX century, taking for base the works fiction of a Brazilian and Portuguese writers, besides the knowledge in place and texts about the ancient College Caraça, model in that epoch, situated in Minas Gerais. Leaving from our research object, the novel O Ateneu, from Raul Pompéia, through the memories of Sérgio, the protagonist, revealed the function of one of the best colleges in Rio de Janeiro of the XIX century: austere discipline and basic mistakes not apparent at fathers eyes who were sending their children to study in the boarding school. So, we like to answer the next question: might we understand that the character Sérgio reveals Pompéia, as soon as he reproduces the characteristics of his creator? The identity of the character, trought the memory, can be seen as a projection of the author? The narrative elaborated of Sérgio perspective, already ripened through his impressions and sharp perception, analyses facts and situations that structured the social environment of the boarding school. The episodes served how revealed successive of the corruption and the moral misery that they were ruling in the traditional College Abílio, that it was frequented by Pompéia. In this sense, it was possible to draw a parallel between this work and Os Maias and A Reliquia of Eça de Queiroz, since they show the importance of the education in the life s formation of Carlos Eduardo and Teodorico, that, unfortunately, little used it, because the first one, although it had an exemplary education financed by his grandfather, surrendered to the enchantments of his sister Maria Eduarda, that after surviving the incest and killed Afonso of displeasure; already the second used an education hypocritical and religious to inherit the fortune of his aunt, Sr.ͣ Patrocínio, and was unmasked through a relic. All the novels wanted to show the importance of the education in the formation of people. Therefore, it was realized a research in a real establishment: the College Caraça, which worked like boarding school and seminar during the XIX century, to make a possible demonstration of model education; concern it was of Ramalho Ortigão with his children and his grandchildren / Trata-se de uma análise do processo educacional na formação da juventude no séc. XIX, tomando por base as obras ficcionais de um escritor brasileiro e de um português, além do conhecimento in loco e de textos a respeito do antigo Colégio Caraça, modelo na época, situado em Minas Gerais. Partindo do nosso objeto de pesquisa, o romance O Ateneu, de Raul Pompéia, por meio das memórias de Sérgio, o protagonista, revelou o funcionamento de um dos melhores colégios cariocas do século XIX: disciplina austera e erros básicos não aparentes aos olhos dos pais, que enviavam seus filhos para estudar no internato. Assim, desejamos responder à seguinte questão: poderíamos entender que a personagem Sérgio revela Pompéia, uma vez que reproduz as características de seu criador? A identidade da personagem, pela memória, pode ser vista como uma projeção do autor? A narrativa elaborada a partir da perspectiva de Sérgio, já amadurecido por meio de suas impressões e percepção aguda, analisa fatos e situações, que estruturaram o ambiente social do internato. Os episódios serviram como desvelamentos sucessivos da corrupção e da miséria moral que imperavam no tradicional Colégio Abílio, do Barão de Macaúbas, colégio esse freqüentado por Pompéia. Nesse sentido, foi possível traçar um paralelo entre essa obra e Os Maias e A Relíquia, de Eça de Queiroz, pois retratam a importância da educação na formação da vida das personagens Carlos Eduardo e Teodorico que, infelizmente, pouco a aproveitaram, pois o primeiro, embora tivesse uma educação exemplar financiada pelo seu avô, rendeu-se aos encantos de Maria Eduarda; que, posteriormente descobrirá ser sua irmã, vivendo o incesto e matando Afonso da Maia de desgosto; já o segundo utilizou-se da educação hipócrita e religiosa recebida para herdar os bens de sua tia, Sr.ͣ Patrocínio, tendo sido desmascarado por meio de uma relíquia. Todos os romances desejaram mostrar a importância da educação na formação das pessoas. Por isso, foi realizada também uma pesquisa em um estabelecimento de ensino real: o Colégio Caraça, que funcionou como internato e seminário durante o século XIX, para tornar possível a demonstração de uma educação modelo; preocupação que era também a de Ramalho Ortigão com seus filhos e seus netos
248

Exploration of the Cerebral Dysfunctions Induced by Arterial Rigidity and/or the Overexpression of TGFβ in a Mouse Model

Bloch, Sherri 06 1900 (has links)
No description available.
249

Topics in macroeconomics and finance

Raciborski, Rafal 06 October 2014 (has links)
The thesis consists of four chapters. The introductory chapter clarifies different notions of rationality used by economists and gives a summary of the remainder of the thesis. Chapter 2 proposes an explanation for the common empirical observation of the coexistence of infrequently-changing regular price ceilings and promotion-like price patterns. The results derive from enriching an otherwise standard, albeit stylized, general equilibrium model with two elements. First, the consumer-producer interaction is modeled in the spirit of the price dispersion literature, by introducing oligopolistic markets, consumer search costs and heterogeneity. Second, consumers are assumed to be boundedly-rational: In order to incorporate new information about the general price level, they have to incur a small cognitive cost. The decision whether to re-optimize or act according to the obsolete knowledge about prices is itself a result of optimization. It is shown that in this economy, individual retail prices are capped below the monopoly price, but are otherwise flexible. Moreover, they have the following three properties: 1) An individual price has a positive probability of being equal to the ceiling. 2) Prices have a tendency to fall below the ceiling and then be reset back to the cap value. 3) The ceiling remains constant for extended time intervals even when the mean rate of inflation is positive. Properties 1) and 2) can be associated with promotions and properties 1) and 3) imply the emergence of nominal price rigidity. The results do not rely on any type of direct costs of price adjustment. Instead, price stickiness derives from frictions on the consumers’ side of the market, in line with the results of several managerial surveys. It is shown that the developed theory, compared to the classic menu costs-based approach, does better in matching the stylized facts about the reaction of individual prices to inflation. In terms of quantitative assessment, the model, when calibrated to realistic parameter values, produces median price ceiling durations that match values reported in empirical studies.<p><p>The starting point of the essay in Chapter 3 is the observation that the baseline New-Keynesian model, which relies solely on the notion of infrequent price adjustment, cannot account for the observed degree of inflation sluggishness. Therefore, it is a common practice among macro- modelers to introduce an ad hoc additional source of persistence to their models, by assuming that price setters, when adjusting a price of their product, do not set it equal to its unobserved individual optimal level, but instead catch up with the optimal price only gradually. In the paper, a model of incomplete adjustment is built which allows for explicitly testing whether price-setters adjust to the shocks to the unobserved optimal price only gradually and, if so, measure the speed of the catching up process. According to the author, a similar test has not been performed before. It is found that new prices do not generally match their estimated optimal level. However, only in some sectors, e.g. for some industrial goods and services, prices adjust to this level gradually, which should add to the aggregate inflation sluggishness. In other sectors, particularly food, price-setters seem to overreact to shocks, with new prices overshooting the optimal level. These sectors are likely to contribute to decreasing the aggregate inflation sluggishness. Overall, these findings are consistent with the view that price-setters are boundedly-rational. However, they do not provide clear-cut support for the existence of an additional source of inflation persistence due to gradual individual price adjustment. Instead, they suggest that general equilibrium macroeconomic models may need to include at least two types of production sectors, characterized by a contrasting behavior of price-setters. An additional finding stemming from this work is that the idiosyncratic component of the optimal individual price is well approximated by a random walk. This is in line with the assumptions maintained in most of the theoretical literature. <p><p>Chapter 4 of the thesis has been co-authored by Julia Lendvai. In this paper a full-fledged production economy model with Kahneman and Tversky’s Prospect Theory features is constructed. The agents’ objective function is assumed to be a weighted sum of the usual utility over consumption and leisure and the utility over relative changes of agents’ wealth. It is also assumed that agents are loss-averse: They are more sensitive to wealth losses than to gains. Apart from the changes in the utility, the model is set-up in a standard Real Business Cycle framework. The authors study prices of stocks and risk-free bonds in this economy. Their work shows that under plausible parameterizations of the objective function, the model is able to explain a wide set of unconditional asset return moments, including the mean return on risk-free bonds, equity premium and the Sharpe Ratio. When the degree of loss aversion in the model is additionally assumed to be state-dependent, the model also produces countercyclical risk premia. This helps it match an array of conditional moments and in particular the predictability pattern of stock returns. / Doctorat en Sciences économiques et de gestion / info:eu-repo/semantics/nonPublished
250

Stewardship in an urban world : Civic engagement and human–nature relations in the Anthropocene

Enqvist, Johan January 2017 (has links)
Never before have humans wielded a greater ability to alter and disrupt planetary processes. Our impact is becoming so noticeable that a new geological epoch has been proposed – the Anthropocene – in which Earth systems might no longer maintain the stable and predictable conditions of the past 12 millennia. This is particularly evident in the rapid expansion of urban areas, where a majority of humans now live and where environmental changes such as rising temperatures and habitat loss are happening faster than elsewhere.  In light of this, questions have been raised about what a more responsible relationship between humans and the rest of the planet might look like. Scholars in sustainability science employ the concept of ‘stewardship’ in searching for an answer; however, with multiple different applications and definitions, there is a need to better understand what stewardship is or what novelty it might add to sustainability research. This thesis investigates stewardship empirically through two case studies of civic engagement for protecting nature in cities – Bengaluru, India and New York City, USA. Further, the thesis also proposes a conceptual framework for how to understand stewardship as a relation between humans and the rest of nature, based on three dimensions: care, knowledge and agency. This investigation into stewardship in the urban context uses a social–ecological systems approach to guide the use of mixed theory and methods from social and natural sciences. The thesis is organized in five papers. Paper I reviews defining challenges in managing urban social–ecological systems and proposes that these can more effectively be addressed by collaborative networks where public, civic, other actors contribute unique skills and abilities. Paper II and Paper III study water resource governance in Bengaluru, a city that has become dependent on external sources while its own water bodies become degraded and depleted.Paper II analyzes how locally based ‘lake groups’ are able to affect change through co-management arrangements, reversing decades of centralization and neglect of lakes’ role in Bengaluru’s water supply.Paper III uses social–ecological network analysis to analyze how patterns in lake groups’ engagements and collaborations show better fit with ecological connectivity of lakes.Paper IV employs sense of place methods to explore how personal bonds to a site shapes motivation and goals in waterfront stewardship in New York City. Finally,Paper V reviews literature on stewardship and proposes a conceptual framework to understand and relate different uses and underlying epistemological approaches in the field. In summary, this thesis presents an empirically grounded contribution to how stewardship can be understood as a human–nature relation emergent from a deep sense ofcare and responsibility, knowledge and learning about how to understand social–ecological dynamics, and theagency and skills needed to influence these dynamics in a way that benefits a greater community of humans as others. Here, the care dimension is particularly important as an underappreciated aspect of social–ecological relations, and asset for addressing spatial and temporal misalignment between management institutions and ecosystem. This thesis shows that care for nature does not erode just because green spaces are degraded by human activities – which may be crucial for promoting stewardship in the Anthropocene. / <p>At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 3: Manuscript. Paper 4: Manuscript. Paper 5: Manuscript.</p>

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