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 21 for “"function models"”.
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Optimisation of pedotransfer function models for soil hydraulic properties using an artificial neural network ensemble method
… to collect. Fortunately, mathematical regression models called Pedotransfer Functions (PTFs) allow the transfer of data we have (soil survey parameters) into the data we need (soil hydraulic properties), and this thesis focusses on the potential and modelling methodologies of Artificial Neural …
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A comparison of advanced time series models for environmental dependent stock recruitment of the western rock lobster
Time series models have been applied in many areas including economics, stuck recruitment and the environment. Most environmental time series involve highly correlated dependent variables, which makes it difficult to apply conventional regression analysis, Traditionally, regression analysis has …
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Data-based Mechanistic Modelling (DBM) of Nonlinear Environmental Systems.
… of data-based mechanistic (DBM) transfer function models for nonlinear environmental systems. The data-based mechanistic modelling approach exploits the available time series data, in statistical terms, to expose the model structure, generating dynamic stochastic models that are …
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Nonconvex optimization algorithm with a new Bi-criteria selection of potential simplices using an estimate of Lipschitz constant /
… type algorithms based on Lipschitz objective function models with unknown Lipschitz constant, which are often applied for practical black-box optimization problems, are considered. The main goal of this thesis is set - to propose a global optimization algorithm for Lipschitz functions with …
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Neiškiliojo optimizavimo algoritmas su nauju bikriteriniu potencialiųjų simpleksų išrinkimu naudojant Lipšico konstantos įvertį /
… type algorithms based on Lipschitz objective function models with unknown Lipschitz constant, which are often applied for practical black-box optimization problems, are considered. The main goal of this thesis is set - to propose a global optimization algorithm for Lipschitz functions with …
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Generalised proportional-integral-plus control
… for systems described by discrete time transfer function models in the backward shift operator. This yields Proportional-Integral-Plus (PIP) controllers that are particularly easy to implement in practice, since the state variables are defined only in terms of the sampled input and output …
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Mechanism of Translational Control by the Fragile X Mental Retardation Protein and Creation of the FMRP CTAG Mouse
… specific set of mRNAs with key roles in neuronal function and to physically interact with targeted mRNAs along their entire coding sequences (Darnell 2011). Here, we find that FMRP inhibits translation on these target transcripts by stalling ribosomes, both in vivo and in rabbit reticulocyte …
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Probabilistic service life prediction of composite viscoelastic cylindrical structure under random outdoor environment
… obtained via the evaluation of cumulative hazard function. Models for the deterministic and random variations of environmental thermal loads- ambient temperature, sky radiation, wind convection, and solar radiation, were developed and were considered in obtaining the structure's surface …
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A spatially resolved study of the KATRIN main spectrometer using a novel fast multipole method
… model of the main spectrometer transmission function. This full transmission function model is then used to evaluate the performance of several of approximate transmission function models, the results of which show that a purely axially symmetric treatment of the main spectrometer is not …
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A comparison of analytical models and experimental results for the acoustic response in a non-rigid-wall enclosure
… High-dimensional state variable and transfer function models are presented, along with discussions of their validity and performance as model parameters vary. The frequency response functions generated using these three models were compared to the actual acoustic frequency response function …
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Driving giants: spatial and temporal variables influencing giraffe movements in a private protected area
… between lions and giraffes. Resource selection function models (RSFs) were then used to identify spatiotemporal variables that influence giraffe movement in a landscape with lions. Variables were resource proximity, including distance to waterholes, NDVI, land cover, landforms, a predation risk …
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Genetic variability, demography, and habitat selection in a reintroduced elk (Cervus elaphus) population
… variables included in top resource selection function models at the landscape and home range scales. All predictor variables, with the exception of fall and spring prescribed burns, were included in top models across seasons at both spatial scales. Elk selected low elevation areas, gentle …
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Ultrasonic characterization of cell pellet biophantoms and tumors using quantitative ultrasound models
… scattering that may be modeled by the structure function. The structure function for the high-concentration cell pellet biophantom was isolated by comparing the BSC of the high-concentration biophantom to that of a very low-concentration biophantom where the cell spatial positions are assumed to …
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Short-Term Forecasting of Power Flows over Major Pacific Northwestern Interties: Using Box and Jenkins ARIMA Methodology
… Integrated Moving Average) and Transfer function methodologies are used as the statistical tools to identify the forecasting models in this thesis. The data requirement for all of the models is restricted to publicly available data.
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Manufacturing execution systems
… recent and relevant definitions, business models, functions and developments of MES are investigated. Based on these, a new MES Function Matrix is developed and validated by a case study. Finally, Industrial Engineering is related to MES and the role of the Industrial Engineer promoted. The …
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Metapopulations and metacommunities in dry forest openings in southern Illinois
… environmental variables, the use of incidence function models to determine which of the species had the potential to form a metapopulation, a metacommunity study to examine overall patterns at each site, a seed bank study, and a seed dispersal study. Forest openings were found to be separate …
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Validation of statistical methods used in task fMRI studies
Functional Magnetic Resonance Imaging (fMRI) is a non-invasive tool used to investigate brain function. The processing of fMRI data consists of multiple steps and the final results often depend greatly on the specific choice of options used: for example, head motion correction, slice timing …
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Computational Augmentation of Model Based System Engineering: Supporting Mechatronic System Model Development with AI Technologies
… languages and of generic structural and functional concepts using meta-models. Modelling the system using descriptive models helps the designer to explicitly document dependencies between properties and parameters of system and external entities. The descriptive models thus produced often …
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Development and demonstration of a new non-equilibrium rate-based process model for the hot potassium carbonate process.
… of these processes, classical equilibrium stage models are usually inadequate for describing the behaviour of chemical absorption and desorption processes. A more effective modelling method is the non-equilibrium rate-based approach, which considers the effects of the various driving forces …
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