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 89 for “"state transitions"”.
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DISORDER EFFECTS IN FRUSTRATED MAGNETS AND ABSORBING STATE TRANSITIONS
… which covers the basic concepts of phase transitions and scaling as well as the physics of Josephson junctions, the dissertation focuses on three separate projects.</p> <p>The first project is motivated by the stripe and nematic phases observed e.g. in cuprate superconductors and iron …
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Brain dynamics of behavioral state transitions across sleep and wakefulness
… with a nervous system must enter a reversible state of quiescence, namely sleep, to maintain brain function. Sleep contributes to major aspects of cognition - including mood, attention, learning, memory, and decision making - and almost all neuropsychiatric disorders are associated with altered …
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Mammalian herbivores reinforce ecological state transitions in the Chihuahuan Desert
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms
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Dryland state transitions, trophic interactions, and the restoration of a keystone species
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms
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Ageing and regeneration-associated transcriptional state transitions and tumour-stroma interaction in early renal carcinogenesis
Kidney cancer is the 14th most common cancers in the world, among which clear cell renal cell carcinoma (ccRCC) is the most common subtype. VHL inactivation is the most common mutation seen in ccRCC with more than 90% of tumours had clonal disruption of the VHL pathway. Although it is the initial …
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A Window to the Mind: Validation of a New Method to Measure Thought Dynamics Using Brain Network Meta-State Transitions
… in how humans flow continuously from one mental state to the next (i.e., the flights and perches of thought; James, 1890). Can we pinpoint these moments of flight directly from neural signals? I drew upon the Human Connectome Project’s Young Adult functional magnetic resonance imaging (fMRI) …
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Identifying and Characterizing Transition Cells in Developmental Processes from scRNA-Seq Data
… distinct decisions about their cell types and states. Understanding the molecular mechanisms underlying cellular state transitions at different developmental stages provides deep insights into physiology, morphology and the etiology of diseases. Single-cell RNA-sequencing (scRNA-seq), which is …
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A model for transition-based visuospatial pattern recognition
… learning and recognizing visual actions based on state transitions. I recorded three training videos of each of 16 actions (approach, bounce, carry, catch, collide, drop, fly over, follow, give, hit, jump, pick, push, put, take, throw), each lasting 10 seconds and 300 frames. After using a …
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On the Feasibility of MapReduce to Compute Phase Space Properties of Graphical Dynamical Systems: An Empirical Study
… challenge. This is because the number of state transitions needed to compute the phase space is exponential in the number of graph vertices. These problems thus produce memory and execution speed challenges. To address this, we devise various MapReduce programming paradigms that can be …
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Time-resolved Resting-state fMRI of Brain States Associated with Drug-resistant Epilepsy
… framework for time-resolved analysis of resting-state functional magnetic resonance imaging (fMRI) data with the aim of elucidating brain patterns of aberrant activity in individuals with drug-resistant epilepsy. Specifically, a dynamic functional connectivity analysis method is first used to …
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Time-dependence in Markovian decision processes.
… a simple decision process with exponential state transitions and solve this decision process using two separate techniques. The first technique solves the value equations directly, and the second utilizes an existing continuous-time MDP solution technique. To incorporate time-dependence into …
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Regulation of the chloroplast light harvesting antenna by plastoquinone redox: Modulation of chlorophyll metabolism and thylakoid complex organization
… of how light intensity, as sensed by the redox state of the plastoquinone pool, signals photoprotective and acclimative responses of the light harvesting apparatus, and particularly how these responses are integrated with one another. The major proteins of the light harvesting antenna, Lhc2b and …
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Holding and rocking the full-term neonate: the immediate and residual effects on behavioral state and heart rate
… to control and organize l) their behavioral state, 2) their arousal and autonomic functioning, or 3) that there is no clear relationship between immediate responses and long term benefits. Behavioral state and heart rate were collected on 40 infants who were randomly assigned to either a …
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Self-stabilizing tree algorithms
… and can only get a partial view of the global state. Transient failures in one part of the system may go unnoticed in other parts and thus cause the system to go into an illegal state. If the system were self-stabilizing, however, it is guaranteed that it will return to a legal state after a …
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The Role of Gene Expression Noise In Mammalian Cell Survival
… living cells influences pro-survival metastatic state transitions remains unanswered.</p> <p>To address these knowledge gaps, I implemented an exogenous synthetic biology approach to control noise for the drug resistance gene PuroR in drug survival while complementing with endogenous expression …
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Quantum Resource Theories for Thermodynamics, Reference Frames, and Uncertainty
… of physical processes, under which the possible state transitions are restricted. Given any initial physical state, the possible final states are also restricted. Initial states with a wealth of possible final states can then be considered more valuable than less versatile initial states, leading …
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Spatio-temporal dynamics of spontaneous neural activity during the transition from slow oscillations to an awake-like state in isolated cortical networks
… neocortex during functionally disconnected brain states, such as deep anaesthesia or slow-wave sleep. These consist in a near-1-Hz alternation of high- (Up) and low-responsive (Down) periods, and spatially propagate as a travelling wave. During the tran- sition towards wakefulness, globally …
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Robust Kalman Filters Using Generalized Maximum Likelihood-Type Estimators
… methods such as the Kalman filter identify best state estimates based on certain optimality criteria using a model of the system and the observations. A common assumption underlying the estimation is that the noise is Gaussian. In practical systems though, one quite frequently encounters …
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Photoprotection and chloroplast regulation in the green algae Chlamydomonas reinhardtii
… migration of antenna complexes from PSII to PSI (state transitions, qT) and inactivation of PSII by damage (photoinhibition, qI). Excess reductant generated during light harvesting can also be dissipated by auxiliary electron transport (AET). The following dissertation aimed to characterize the …
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MULTIPLEX ASSAY DESIGN
… based on the principles of size, melting-state transitions, and sequence-specific probes. The problem of false-negative methicillin-resistant Staphylococcus aureus (MRSA) calls by commercial assays was also explored. A novel target for the identification of Staphylococcus aureus was …
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