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 11 of 11 for “"Modelling uncertainty"”.
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Modelling uncertainty of cost and time in infrastructure projects
… tools and techniques used to forecast possible uncertainty in the construction processes are a primary cause of cost overruns and time delays on construction projects. Uncertainties encountered in the construction process are underestimated and these impact on the final cost and time of …
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Comparison of deterministic, stochastic and fuzzy logic uncertainty modelling for capacity extension projects of DI/WFI pharmaceutical plant utilities with variable/dynamic demand
… stochastic methods as the traditional method of modelling uncertainty. But the circumstances under which FL or stochastic methods should be used are shrouded in disagreement, because the areas of application of statistical and FL methods are overlapping with differences in opinion as to when …
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Probabilistic Programming for Postoperative Bleeding
… tools. We focus specifically on the challenge of modelling uncertainty and study this in the context of postoperative bleeding management in a hospital intensive care unit. We explore the translation of a tool from machine learning and statistics, probabilistic programming, into the clinical …
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Observer based active fault tolerant control of descriptor systems
… the effects of bounded exogenous disturbance and modelling uncertainty. A novel proportional derivative (PD)-ESO is introduced to achieve enhanced estimation performance, making use of the additional derivative gain. The proposed approaches are evaluated using a common numerical example adapted …
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Operational modelling of geomagnetic fields and geomagnetically induced currents
… been known to affect power systems adversely. Modelling these GICs usually involves consideration of a chain of coupled systems. The scope of the modelling chain spans multiple disciplines, from solar physics through to geophysics and power engineering. Most models split the chain into …
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End-to-End Ensemble Modelling for Water Resources Planning Under Uncertainty
… model structures (CatchMOD and PDM), parameter uncertainty and two contrasting methods for estimating potential evapotranspiration (PET), is developed to investigate the relative significance of different sources of uncertainty for water resources planning in the Thames basin. This model …
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Sequential Approaches to Three-Way Data Analytics
… may not be easy to give due to incompleteness, uncertainty, and errors. In such situations, forcing to give definite answers may result in significant mistakes. Instead of bipolar options, a theory of three-way decision allows a third in-the-middle option. This idea moves us from yes/no to …
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Flexural Behavior of CFRP-Pretensioned Girders
… variability of the model parameters and the modelling uncertainty. The reliability study suggested a strength reduction factor of 0.75 for CFRP prestressed beams. Finally, the findings of this study suggest design guidelines for CFRP prestressed beams.
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An operational method for assessing traffic-related air pollution in urban streets
… streets, after testing available monitoring and modelling techniques. To meet this objective, a large amount of original air quality, meteorological and traffic data were collected during four intensive short-term and one long-term monitoring campaigns carried out in the region of Paris from …
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Education for All? Complex solutions to complex problems in the Nigerian education sector
… theoretical domain into development practice (a modelling exercise). Two of the most populated states (Kaduna and Lagos), representing the North and South are selected for analysis. To understand the dynamics of change processes, the research adopts investigative techniques (observations, …
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Deep decarbonization scenarios for Ireland to 2050 using a new scenario ensemble tool
… evidence and insights from energy systems modelling that can contribute to addressing the challenges of deep decarbonisation of Ireland’s energy system by 2050. While scenario analysis and energy systems modelling has been widely used globally to project 2°C-consistent energy pathways, a …