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 12 of 12 for “"lag effects"”.
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"Shear Lag" em estruturas tubulares de paredes delgadas
… an energy approach where shear strains and shear lag effects are considered. Explicit expressions for transverse deflections and stesses are given for cantilever box beams. For tubular sections of more general geometries, like bridge sections, semi-explicit expressions are presented to several …
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Modelling the impact of climate change on health
… of climate and pollution, and their delayed effects on hospital admissions. This study also evaluates whether the model fits can be improved by considering the non-linearity of the data, delayed effect of the significant factors, and thus calculate threshold levels of the significant climate …
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Investigation of shear lag effect in high-rise buildings with diagrid system
… the framed tube building suffers from shear lag effects which cause a nonlinear distribution of axial stresses along the face of the building. A particular structural system called a diagrid system has caught the attention of the public. The diagrid system is not a new invention. The idea had …
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The stochastic behavior of spot freight rates and the risk premium in bulk shipping
… is required in order to account for the observed lag effects in the conditional mean and variance. New theory governing the risk premium in the freight markets is proposed, which suggests that the theoretical risk premium should be time varying and, in general, depend on the state of the freight …
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Relationships between tree rings and Landsat EVI in the Northeast United States
… also indicate that there may be important lag effects in which EVI affects mean TRW during the following year. These findings may improve understanding of links between C uptake and growth of tree stems over large spatial scales.
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Measuring grassland response to management using optical remote sensing
… for green vegetation extraction), to monitor the lag impact of long-term conservation actions, and to quantify and separate the effects of management and climate conditions as well as their interactions. The study area is Grasslands National Park (GNP) including the West Block and East Block which …
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Medium-Term (Months to Years) Morphodynamic Modelling of a Complex Estuarine System
… at Teignmouth. The importance of the combined effects of wave stirring and mixed grain sizes on reproducing the sediment import processes is confirmed by the Brier skill scores. Model predictions show a high influx of suspended sediment into the estuary in the presence of wave stirring effects …
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Lap time simulation for racing car design
… and yaw inertia as well as damping and tyre lag effects. Another aspect that is not accounted for is the variation in the fastest effective vehicle path along the circuit (i.e.racing line) due to change in driver control inputs or vehicle parameters. The overall aim of this thesis is to …
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Multi-scale modeling of the hydrodynamics, sediment transport, and morphodynamics in the nearshore
… in the nearshore. Using a two-phase Eulerian-Lagrangian CFD-DEM model we first validated the model for oscillatory sheet flow sediment transport and simulated a variety of sediment bed configurations under a variety of near-bed flow fields representing a variety of wave conditions in the …
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Stability analysis of a natural circulation lead-cooled fast reactor
… water reactors. In order to capture the regional effects, modal expansion method which incorporates higher azimuthal modes is used to model the neutronics part of the system. A reduced order model is used in this work for the thermal-hydraulics. Consistent with the number of heat exchangers (HXs), …
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Environmental compliance: determinants, interactions and performance
… performance, and environmental performance, with lag effects. This research expands the knowledge around the sequential framework of the Porter hypothesis. These findings suggest that policymakers should design environmental regulations accounting for temporal dimensions and manage trade-offs …
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Dynamic catch-effort models for the southern African hake populations
… resulting from the GFR procedu.,..e. Since the effects of 1..mcertainties (s1..tch as adverse environmental variability and the imprec::-ision of stoc~ biomass estittrates} can critically influence the outcoffle of mcmagement dec-i si ons, caution should be e>terci sed when 1t1ak i ng catch l …