Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 30 for “"Tipping points"”.
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Tipping Points in Stochastically Perturbed Linear Filippov Systems
In this thesis, we study noise-induced tipping in a piecewise-smooth, linear, one-dimensional periodically forced system perturbed by weak additive noise. This problem is motivated by a recent model of energy flux in Arctic sea ice. We determine the most probable tipping events using path integral …
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Tipping points, regime shifts and species interactions within shallow marine ecosystems
Understanding the response of ecosystems to perturbation is of great importance in a rapidly changing world. Research has shown that in response to pressures such as climate change or over exploitation, entire ecosystems can shift to alternative states, a phenomenon termed regime shifts, and in …
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Communicating Climate Change: Climate Rhetorics and Discursive Tipping Points in United States Global Warming Science and Public Policy
… policymaking has reached an important discursive tipping point where arguments that were once successful in previous climate rhetorics are no longer be viable options in hearings and debates. After offering a brief rhetorical history of global climate change, this dissertation uses the tools of …
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Increasing forest cover amidst expanding commercial agriculture: An agent-based simulation of markets and rural livelihoods in the Indian Himalayas
… reach a critical level that triggers tipping points in the decision-making process. Sustained, weak market fluctuations have less impact on long-term crop choices than short-term, strong fluctuations. Market dynamics are not the only potential triggers of tipping points. Changes …
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Managing the transition toward self-sustaining alternative fuel vehicle markets : policy analysis using a dynamic behavioral spatial model
… important feedback relationships, and multiple tipping points. A broad-boundary, behavioral, dynamic model with explicit spatial structure was previously developed to represent the most important AFV transition barriers. Using California as an illustrative testing region, the model simulates the …
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Design of Future Energy Infrastructure: Understanding trade-offs between Renewable Capacity, Storage and Transmission Networks for Low-Carbon Landscape
… across technologies and identifying system tipping points, this work offers a framework for policymakers and long-horizon investors.
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Uncertainty & Learning in Global Climate Analysis
… aus dem Überqueren eines sogenannten „Tipping-Points“ einen signifikanten Einfluss auf die kurzfristige Vermeidungsstrategie ausübt. Wir zeigen, dass dies nur der Fall ist, wenn das Lernen in einem engen „Antizipations-Zeitfenster“ stattfindet. In diesem Fall ist eine striktere …
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Asymmetrical Information Market Failure Triggered by the Chicago School's Profit Motive Paradigm: A Case Study of Virginia's Public Higher Education Market and Media Identification of Public Value Failure
… failure conditions. Market failures can lead to tipping points which may result in public values failures as threats to human subsistence (i.e. food, clothing, education) and imperfect public information. Market failures resulting in public values failures warrant government intervention to …
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Emulating Radiation-Induced Defect Microstructures by Neutrons and Dark Matter Using Ions
The crossing of climate tipping points can lead to accelerated warming, requiring a more radical transformation of energy systems. Nuclear energy provides a practical and feasible solution that can be implemented quickly. However, the rate of radiation damage accumulation in fission reactors is …
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SMT goes ABMS: Developing Strategic Management Theory using Agent-Based Modelling and Simulation.
… tensions among some of the chosen variables and tipping points in emergent behaviours, point to areas where theoretical clarity is currently lacking, provoke some interesting questions and open up useful avenues for future research and data collection using other methods and models. Guidance …
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Spatio-temporal dynamics before population collapse
… more vulnerable to disturbance closer to the tipping point. Fluctuations of population density increased in size and timescale near the tipping point, in agreement with the theory. In the second project, we used spatially extended yeast populations to evaluate early warning signals based on …
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Modeling social norms in real-world agent-based simulations
… emergence in social networks and the theory of tipping points is studied. 4) A new lightweight normative architecture for studying smoking cessation trends is introduced. This architecture is then extended to a more general normative framework that can be used to model real-world normative …
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Millennials' Orientations Towards Passion For Work In Knowledge-Based Organisations
… sometimes micro-moments, which sometimes lead to tipping points in terms of passion for work.
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Private Provision of Public Goods: Uniform Price Mechanisms with a Threshold and Dynamics with a Tipping Point
… 4, we study durable public good games with a tipping point, below which collapsing the stock is optimal. With a payoff function linear in stock and income and a logistic growth function, we show the existence of a tipping point. Further, under a dynamic voluntary contribution mechanism (DVCM), …
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Financing hope: the impact of state and institutional financial aid on undocumented student persistence and success in Texas
… to financial aid, and examination of the tipping points in financial aid and departure behavior. Policy and practice recommendations include passing comprehensive immigration reform, passing DREAMer legislation, codifying the Deferred Action for Childhood Arrivals (DACA) policy, creating …
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Toward circular and sustainable nitrogen (N) management in the US and globally
… nonlinearly to N inputs, with country-specific tipping points beyond which additional inputs reduce efficiency. With system-wide inefficiencies and key NUE drivers, Chapters 3 and 4 evaluate improvement pathways to enhance N circularity and reduce N losses. First, I develop a transparent and …
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The Role and Status of the Catholic Church in the Church-State Relationship Within the Roman Empire from A.D. 306 to 814
… Charlemagne's coronation are considered turning points in history, Clovis's conversion and the reigns of Justinian and Vigilius can be considered tipping points for the beginning of the new European model of church-state relations and the fight for political supremacy by the papacy.</p>
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Hegemony and nuclear proliferation
… to longstanding of predictions of nuclear tipping points, the number of states interested in nuclear weapons has sharply declined in recent decades. In contrast to existing explanations, this dissertation argues that the decline is largely attributable to US nonproliferation policies, in …
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Essays on Dynamic Optimization for Forest Resource Management
… This process is known to lead to irreversible tipping points that lead to the loss of ecosystem services. The past literature has discussed forest rotations under stochastic prices, timber volume, and amenity values. I extend this body of work to show how stochastic processes concerning primary …
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Roots or routes: A case for vertical farming allotments in Dunoon quarry
… without playgrounds, women without laundry water tipping points, that the community is brought together in the water world of Dunoon quarry.
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