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 56 for “"individual-based model"”.
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Developing an individual based model of phytoplankton using a size-based approach
Bibliography: leaves 22-24.
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Examining Movement Dynamics of the Gulf Menhaden Fishery Using an Individual-based Model
… These analyses were used to inform an individual-based model (IBM). The IBM was run under several different spatial restriction regimes, including (1) current regulations in Texas, Louisiana, Mississippi, and Alabama; (2) additional restrictions off the coast of Jackson County, MS; (3) …
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An Individual-Based Model of Fish Habitat Selection for Network-Scale Watershed Assessment
The results of this research show that process-based interdisciplinary models can be developed for understanding large-scale ecological dynamics in river networks. The explicit inclusion of species' biological functions allows the model to explain the arrangement and response of stream communities. …
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Modelling the structuring of animal communities in heterogeneous landscapes : the role of individual home range formation, foraging movement, competition and habitat configuration
… animal communities. Therefore, an allometry- and individual-based model has been developed which was used to simulate mammal and bird communities in heterogeneous landscapes, and to to better understand their response to landscape changes (habitat loss and fragmentation).
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Mathematical Modelling of the Immune Response to Cancer
… logical explanation underpins the mathematical modelling in this PhD thesis where mathematical models of pre-angiogenic immune-tumour interactions are presented and analysed. Chapter two develops an individual-based model of immune-cancer cell interactions using the computational simulation …
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Modelling the ecology and epidemiology of Streptococcus pneumoniae and their impact on conjugate vaccination
… of the pneumococcal serotypes. Statistical models are employed to analyse the changes in post vaccination epidemiology in the UK in both carriage and invasive disease and to correct for possible ascertainment biases. Established mathematical models are analysed for their ability to reflect …
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A first approach to individual-based modeling of the bacterial conjugation dynamics
This work presents a spatially explicit individual-based model of bacterial conjugation using use a discrete representation of time and space. The space is defined by a discrete grid where agents are place and evolve through their local interactions. Each agent is described by a state vector …
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A comparison of individual-based and matrix projection models to applied to fish population and community dynamics
Matrix projection models and individual-based models (IBM) are commonly used for the analysis and management of fish populations. Matrix models break down the population into age or stage classes, while IBMs track individuals. I perform a series of quantitative comparisons between the predictions …
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Early life history dynamics of a stocked striped bass (Morone saxatilis) population and assessment of strategies for improving stocking success in Smith Mountain Lake, Virginia
… Virginia, from 1994-96 and incorporated into an individual-based model to assess various stocking strategies in terms of their largest percent increases in first-year growth, overwinter survival, and recruitment to age 1. Age-0 striped bass exhibited dissimilar patterns of dispersion and …
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Modeling the effects of endocrine disrupting chemicals on Atlantic croaker: understanding biomarkers and predicting population responses
… difficult to evaluate within the context of an individual, or subtle effects that do not relate well to endpoints of ecological significance. I present an approach that uses a series of models, based on Atlantic croaker, to extrapolate laboratory results to indicators of individual and …
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Individual-based modeling of bacterial chemotaxis and spatial ecosystem dynamics
DSpace SAF Submission Ingestion Package generated from Vireo submission #21011 on 2025-03-28 at 14:42:22
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Modelling and investigation of the role of anthropogenic noise on the collective behaviour of marine animals
… alike.<br/><br/>In this thesis, we propose an individual based model describing a group of interacting particles, whose movements change in response to their neighbours and external factors, such as noise. The group is subject to three main social interactions: repulsion (where they will …
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Dynamic energy budgets and bioaccumulation : a model for marine mammals and marine mammal populations
Energy intake of individuals affects growth of organisms and, therefore, populations. Persistent lipophilic toxicants acquired with the energy can bioaccumulate and harm individuals. Marine mammals are particularly vulnerable because of their large energy requirements, and transfer of energy and …
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Dynamic energy budgets and bioaccumulation : a model for marine mammals and marine mammal populations
Energy intake of individuals affects growth of organisms and, therefore, populations. Persistent lipophilic toxicants acquired with the energy can bioaccumulate and harm individuals. Marine mammals are particularly vulnerable because of their large energy requirements, and transfer of energy and …
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The Effects of Minimum Size Limit Regulations On Exploited Fish Populations off the Atlantic Coast of the Southeastern United States
… catches from a commercial fisherman and an individual-based model. The entire catch of a commercial fisherman was characterized by species, length and release condition for fishing trips between June and November 2004. While overall discard percentages were low (13%), release mortality was …
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DISPERSAL BEHAVIOR OF WHITE-TAILED DEER IN AN AGRICULTURAL LANDSCAPE
… opinion and step selection function resistance models at predicting deer dispersal movements, and 4) fit single and multiple random walk models to dispersal path data to determine movement states occurring within this behavior. During 2011-2014, I placed GPS collars programmed to take hourly …
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Competition For Above And Below Ground Resources Among Annual Species From The Plant To The Field: Quantification Analysis And Modeling
… ii) to test, through field experiments and an individual based model, the effects of size inequality and plant spatial arrangements on the competitive relationships among plants, the success of individuals, the evolution of plant sizes distributions and the ability of individual plants to …
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Investigating the physical and ecological drivers of change in a coastal ecosystem: from individual to population scale impacts.
… scale of the whole harbour, and at the scale of individual habitats: an intertidal mudflat and a saline lagoon; and 2) predicting the response of an overwintering shorebird population, the pied avocet (Recurvirostra avosetta), to future environmental changes, such as sea-level rise and habitat …
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Computational Modeling of Bacterial Biofilms
… we improve a recently proposed three-dimensional individual-based simulation framework to uncover governing microscopic dynamics at single-cell level that drive the structural developments in growing biofilms. Our individual-based model incorporates the essential biophysical processes of cell …
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Management Strategy Evaluation for the Atlantic Surfclam, <i>Spisula solidissima</i>, Using a Fisheries Economics Model
… metrics. The active agents of the MSE model are individual fishing boats with economic and quota constraints influenced by captain’s behaviors over a spatially varying population. Management alternatives include two closure rules and three closure durations. Simulations showed that LPUE …
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