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.
Results
Showing 1 to 14 of 14 for “"Compartmental models"”.
-
Incorporating the Pre-symptomatic Stage in the Discrete-Time Kermack-McKendrick Model
Numerous mathematical models have been implemented since the COVID-19 pandemic, with most using large compartmental models which indirectly restrict the generation-time distribution. The continuous-time Kermack-McKendrick epidemic model of 1927 (KM27) allows a random generation-time distribution, …
-
New biophysical methods for the characterization of signal transfer in neurons
… step, and thus will be useful for constraining compartmental models and estimating the relative electrotonic distance of synapses. Action potential propagation in dendrites links information processing in different regions of the dendritic tree. In simulations using compartmental models with …
-
Applications of jump processes in epidemiology and neuroscience
… A jump process is a stochastic process that models the occurrence of discrete events over time. In epidemiology, the events correspond to catching an infection, recovering from a disease, etc. In neuroscience, the spike train of a neuron can be described as a jump process. The first …
-
Modeling Network Worm Outbreaks
… virus outbreaks that occur, globally or locally. Compartmental models will be used to analyze the mannerisms and behaviors of computer malware. This paper will focus on a computer worm, a type of malware, spread within a business network. A mathematical model is proposed consisting of four …
-
Bio-Behavioral Models for HIV Prevention
… migrations (Chapter 2) project is to compare compartmental and network models in how they explain the dynamics of a system in which some individuals engage in circular migrations. Another goal is to understand the role such movement patterns play in HIV transmission, given the critical …
-
Modelling HPV Vaccination and Screening Strategies to Optimize Treatment
… vaccination and treatment. Three sets of compartmental models were developed to study various aspects of HPV infection and progression. The first set of models studies which parameters are relevant in screening and vaccination programs and compares four different programs: a no …
-
Sensitivity Analysis and Forecasting in Network Epidemiology Models
… epidemic curve. These methods range from simple compartmental models to complex agent-based models. In this dissertation, we present a model-based reasoning approach to forecasting the epidemic curve and estimating underlying disease model parameters. The method is based on building an epidemic …
-
UCTAS : the UCT anaesthetics simulator : simulating the uptake and distribution of halothane
… features of several existing non-linear multi-compartmental models and adapting the equations to allow them to be implemented on a digital computer. The simulator software that was developed allows an operator to adjust physical parameters such as fresh gas flow rate, halothane concentration, …
-
Cost-Effectiveness Analysis Using Agent-Based Modelling: A General Framework with Case Studies
… approaches such as differential equation-based compartmental models span a vast literature, they often impose restrictive assumptions such as homogeneity and determinism that limit their application to real settings. ABM overcomes these limitations through a bottom-up approach in which macro …
-
Mathematical solutions to problems in radiological protection involving air sampling and biokinetic modelling
… developed, enabling non-recycling and recycling compartmental models to be solved. Their accuracy and speed were investigated, and methods of dealing with partitioning, continuous intake, and radioactive progeny were discussed. Analytical, rather than numerical, methods were used. These are …
-
THE EXPLORATION OF THE VALIDITY OF QUANTITATIVE 2-DEOXY-2-[FLUORINE-18] FLUORO-D-GLUCOSE (18F-FDG) POSITRON EMISSION TOMOGRAPHY/COMPUTED TOMOGRAPHY (PET/CT) TO ASSESS LUNG INFLAMMATION
… Patlak graphical analysis, whilst non-linear compartmental models have been used more recently to estimate metabolism. However, these contending measures of pulmonary 18F-FDG uptake, which are putative biomarkers of lung inflammation, have so far been disparately applied. Further, there is …
-
Mathematical modelling of the HIV/AIDS epidemic and the effect of public health education
… use, etc. Our research focuses on different compartmental models with emphasis on the effect of public health education. From the point of view of statistics, it is well known how the public health educational programs contribute towards the reduction of the spread of HIV/AIDS epidemic. Many …
-
Population dynamics of infectious disease and pathogen evolution: modelling vaccine escape
… coverage of its host population. Deterministic compartmental models are coupled with a parsimonious approach to pathogen evolution, focussing on the selection pressure for immune escape. We study the qualitative patterns of this escape pressure — as a function of the vaccination coverage — and …
-
Επίδραση των δεξαμενών CO₂ στην εμφάνιση ισοτοπικού άνθρακα στην εκπνοή
In ¹³CO₂ breath tests, based on ¹³C/¹²C ratio measurements, the appearance of ¹³C in the exhaled CO₂ is monitored after the administration of a ¹³C-labelled compound. Independently of the substrate used, the existence of the bicarbonate pool, in which the produced CO₂ enters before being exhaled, …