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 40 for “"3D simulation"”.
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3D Simulation of the Velodyne HDL-32E Lidar Integrated with an Autonomous Marine Vehicle
<p>A 3D simulator is programmed for modeling the Velodyne HDL-32E LIDAR used on the WAM-V vehicle in the marine environment for obstacle detection. The model takes into account sensor integration, sensor error, and error correction. Theoretical analysis includes consideration of atmospheric …
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1D and 3D simulation of a water cooled reactor cavity cooling system experimental facility
… to operate without external inputs. The accurate simulation of the phenomena in a reactor cavity cooling system is important for design calculations, to ensure reactor designs that are passively safe. The codes that are used to simulate the phenomena must therefore be verified and validated. One …
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Replaying the past: establishing a 3D simulation methodology for the analysis of roofing and alignments in Neolithic Malta
3D simulations, or digital experiments based on 3D models, offer new possibilities for archaeological investigation. Originating in the field of 3D reconstruction (here approximation), 3D simulations consist of virtual environments that act as proxies for an archaeological context, allowing the …
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Comparison of Color and Fabric Presentation Options in the Design Process
… (i.e., fabric swatch, printed swatch card, 2D simulation, 3D simulation). The survey was pilot tested for content validity and instrument reliability. Descriptive statistics (i.e., frequencies, percentages, contingency tables) were used to analyze the data. The response rate was 65% for 13 …
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Developing knowledge for real world problem scenarios : using 3D gaming technology within a problem-based learning framework
… to embed this approach in a three-dimensional (3D) simulation environment provides users with a dynamic, responsive, visually engaging, and cost effective learning experience. Representing real world problems in 3D simulation environments develops knowledge and skills that are applicable to …
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Geometric Approaches for 3-Dimensional Shape Approximation
Having 3D simulation models which represent the visual geometry and contact dynamics of arbitrary objects is important for achieving robust planning and control for robotic manipulation tasks and sim2real transfer. Currently, the most common solution for obtaining such models is generating them by …
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Efficient Thermo-Mechanical Model for Solidification Processes and Its Applications in Steel Continuous Casting
… temperature, and stress. Finally, a large scale 3D simulation of a thin slab caster with a funnel, first of that kind ever conducted, is performed to correctly reproduce the 3D mechanical state in casting process with extremely complex geometry and loading conditions.
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Optimization of microwave devices
… on the integration of the algorithm with a 3D Simulation CAD (HFSS, CST). The microwave devices under test are a ridge waveguide (in different configurations), a resonant cavity, a waveguide impedance transformer and an electromagnetic band gap structure. Both the approaches result to be …
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Individual and group dynamic behaviour patterns in bound spaces
… in real time. In this research, an alternative simulation-based approach for behaviour analysis has been adopted. It can potentially reduce the requirements for extracting information from real video footage for the purpose of the analysis of the dynamic behaviour. This can be achieved by …
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Computational Scheme Guided Design of a Hybrid Mild Gasifier
… reaction model, (b) expand the 2D model to 3D and (c) utilize the improved model to investigate the mild-gasification process and guide modification of the mild-gasifier design. The Eulerain-Eulerian method is employed to calculate both the primary phase (air) and secondary phase (coal …
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Software architecture and design of task deduction and task planning components for a multiple robot simulation system
Visual simulations of industrial processes (e.g. welding, assembling etc.) involving multiple robots, are part of the overall design process for such systems. A 3D simulation and visualization software tool has been developed named MRS, for Multiple Robot Simulation system. Experiences in this area …
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Dielectric Characterization: A 3D EM Simulation Approach
A new approach is presented that relies upon 3D electromagnetic simulation results to characterize the complex permittivity of homogeneous dielectric materials. By modeling the test fixture and obtaining a set of simulated S-parameters through an iterative solution process, the dielectric constant …
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On the Interaction of Jets with the Dense Medium of the Early Universe
… cooling were simulated. After validation of the 3D code NIRVANA by comparison with literature simulations, an adiabatic 2D parameter study in the relevant regime (density contrast jet/medium eta=10^{-2}-10^{-5} was performed. Characteristic cocoon shape and broadenings were found. The radial …
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Integrated analysis of relationships between 3D-structure, leaf photosynthesis, and branch transpiration of mature Fagus sylvatica and Quercus petraea trees in a mixed forest stand
… historically new chances for the description of 3D-complexity of beech and oak forests that come along with the rapid developments in information technology: It gives a comprehensive description of measured structural features of both species and evaluates and visualizes them with a …
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Combining local and global optimization for planning and control in information space
… We also demonstrate performance results by 2D simulation of a planar car and 3D simulation of an autonomous helicopter.
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Comparing Potential Fields and Velocity Obstacles for Rules of the Road Compliant Ship Driving
… show that these methods are viable. We develop a 3D simulation environment that is able to more quickly process through situations by disabling the graphics component. We use this simulation environment to train our Genetic Algorithm Tuned Potential Fields for Ship Driving (GAPFS). Our potential …
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Evolutionary Algorithms and Simulation for Intelligent Autonomous Vehicles in Container Terminals
… techniques, such as evolutionary computation and simulation, to the deployment of intelligent autonomous vehicles (IAVs) in container terminals is the focus of this thesis. IAVs are a new type of intelligent vehicles designed for transportation of containers in container terminals. This thesis for …
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New technique for the development of open CNC cell controller based on ISO 14649 and ISO 6983
… of ISO data interface models interpretation, 3D simulation, machine motion control, live video monitoring and automatic document generation modules. The system has also been validated through manufacturing of case study components. Corresponding experimental results verified the proposed …
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Flow modelling of scroll compressors and expanders
… the refrigeration effect increased. A computer simulation of the geometry of the scroll device was first developed. This was attached to a package of subroutines developed to analyse compressor and expander thermodynamic performance to obtain estimates of both scroll expander and compressor …
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Three-Dimensional Loss Effects of a Solenoidal Inductor with Distributed Gaps
… disparities in losses between 2D-based design simulations and a 3D realization of solenoidal inductors featuring distributed gaps. The inductor geometry entails a solenoidal copper winding enveloped by sintered ferrite rings and end caps, with the air gap required for energy storage distributed …
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