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 99 for “"multi-state"”.
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Continuous Time Multi-state Models for Survival Analysis
… survival analysis techniques for continuous time multi-state models. It explores homogeneous Markov models, homogeneous semi-Markov models, non-homogeneous Markov models, and general models. It also discusses the likelihoods, hazards, and probabilities for each model. This paper examines …
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Multi-state modelling to estimate infectious disease burden
… lives. In this thesis I aim to develop and apply multi-state models to estimate infectious disease burden from observational data. Multi-state models are a flexible approach to estimating risks and lengths of stay, and capable of accounting for data biases and censoring. I demonstrate the …
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Algebraic Reliability. Monomial ideals applied to multi-state system reliability
… esta tesis se estudia la fiabilidad de sistemas multi-estado mediante un acercamiento algebraico basado en ideales monomiales. Consideramos un sistema como un conjunto de componentes junto con una función de estructura. Tanto las componentes como el sistema se dicen binarios si u ́nicamente …
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Design of a two-stage multi-state experimental biogas reactor
Anaerobic digestion is a process that breaks down waste and other feed materials and produces biogas. A biogas reactor, or anaerobic digester, is designed to conduct anaerobic digestion in a closed environment and to collect the produced biogas. This is an important field of study because biogas is …
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Stochastic Simulation Methods for Solving Systems with Multi-State Species
… population-based scheme faces the challenge from multi-state situations in many biochemical models. To tackle this problem, Morton-Firth and Bray's stochastic simulator (StochSim) was proposed with a particle-based scheme. The thesis first provides a detailed comparison between these two methods, …
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Estimating Non-homogeneous Intensity Matrices in Continuous Time Multi-state Markov Models
Multi-State-Markov (MSM) models can be used to characterize the behaviour of categorical outcomes measured repeatedly over time. Kalbfleisch and Lawless (1985) and Gentleman et al. (1994) examine the MSM model under the assumption of time-homogeneous transition intensities. In the context of …
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Ultrawideband and Multi-state Reconfigurable Antennas with Sum and Difference Radiation Patterns
… antenna elements working together to produce multiple different radiation patterns with the aim of improving the quality and reliability of a communications system. One useful implementation of pattern diversity considers sum and difference radiation patterns which can be exploited to extend …
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Visual-inertial odometry with depth sensing using a multi-state constraint Kalman filter
… for use with a monocular system, is the multi-state constraint Kalman filter (MSCKF), proposed by Mourikis and Li [34, 29]. The way the MSCKF uses feature measurements drastically improves its performance, in terms of consistency, observability, computational complexity and accuracy, …
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Stochastic Simulation Methods for Biochemical Systems with Multi-state and Multi-scale Features
… systems. The thesis is focused on systems with multi-state and multi-scale features and divided into two parts. In the first part, we propose new algorithms that improve existing multi-state simulation methods. We first compare the well known Gillespie\\\'s stochastic simulation algorithm (SSA) …
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Understanding Multi-State, Stakeholder Directed, Corridor Coalition Building: An Interstate-81 Case Study
… 2009). Through a case study of the Interstate 81 Corridor Coalition, this dissertation describes the coalition’s characteristics, analyzes its evolutionary development and explores governance participation possibilities. This study based on data from a mixed methods research approach …
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Teachers' and supervisors' perceptions of secondary learning disabilities programs: a multi-state survey
… to certain program aspects and often to single states. Therefore, a more integrated investigation is needed into what high school LD teachers do; what their needs are; what teachers and supervisors consider important for their programs; and the impact of these variables on consultative …
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A Multi-State Comparison of NASP Domains of Practice and School Psychologist Evaluation Rubrics
… Domains of Practice. Using a content analysis of state evaluation rubrics, the researcher determined the extent to which various state evaluation rubrics align with the NASP domains and selected terminology from the NASP domains. Results indicate a need for a comprehensive and NASP-endorsed …
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Multi-state system in a fault tree analsis of a nuclear based thermochemical hydrogen plant
… combines FTA with a reliability analysis tool, multi-state system (MSS), to improve the accuracy of FTA and also improve system reliability.
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Identifying and characterizing fungal pathogens causing seedling diseases on soybean through a multi-state survey
… causing seedling diseases of soybean through a multi-state effort. Two different approaches were used for genus and species determination, one relying on morphological features using microscopy and the other through DNA sequencing of specific genetic loci using up to three different barcodes. …
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Application of multi-state financial data for use with the USDA Agricultural Conservation Planning Framework
… regional scales. As Iowa and other US Corn Belt states continue to navigate water quality issues, spatially targeted conservation and watershed planning tools, such as the Agricultural Conservation Planning Framework (ACPF), can bring new and relevant information to conservation efforts. The main …
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Creating An Integrated Opioid Policy For Multi-State Hospice Practices: Improving Opioid Compliance And Patient Safety
… for hospice providers to translate federal and state opioid regulations into organizational policy to guide hospice & palliative care practice. The purpose of this project was to review, synthesize and reconcile federal, state, and local opioid regulations and create a system for a sustainable …
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Multi-state models for the analysis of Wheeze in a birth cohort of Western Cape children
… middle-income contexts. This study aimed to use multi-state models to estimate the rate of transition among various states of wheeze in children from birth to the age of three years. This study also aimed to investigate the association between possible risk factors for childhood wheezing and the …
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A multi-state model of treatment states in an antiretroviral treatment programme cohort in Cape Town
… after an interruption. Methods We fitted a multi-state model to data from the Khayelitsha cohort of the International Epidemiologic Databases to Evaluate AIDS. Between 2001 and 2012, 6796 adult patients starting ART were included. Potential treatment interruption periods were defined between …
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Institutional order in multi-state systems and societies: an English school analysis with views from China and India.
… and as prime determinants of the manner in which states of a multi-state system (modern or pre-modern) are incorporated into a society of states. Secondly, that when applied to the People’s Republic of China and the Republic of India, this approach enables conclusions to be reached about the …
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On change in length of stay associated with an intermediate event: estimation within multi-state models and large sample properties
… equal to the time spent in the <br>intermediate state. We suggest and study functionals quantifying <br>change in length of stay. Our approach applies quite generally to <br>functionals summarizing the impact of an intermediate on a terminal <br>event.
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