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 24 for “"Geometric modelling"”.
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Geometric modelling and shape optimisation of pharmaceutical tablets. Geometric modelling and shape optimisation of pharmaceutical tablets using partial differential equations.
… over-come this problem. A technique for shape modelling of pharmaceutical tablets based on the use of Partial Differential Equations is presented in this thesis. The volume and the sur-face area of the generated parametric tablet in various shapes have been es-timated numerically. This work …
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The polyhedral Gauss map and discrete curvature measures in geometric modelling.
… the study of discrete curvature as an important geometric property of objects, useful in describing their shape. The main focus is on the study of the methods to measure the discrete curvature on polyhedral surfaces. The curvatures associated with a polyhedral surface are concentrated around its …
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Modelling and Animation using Partial Differential Equations. Geometric modelling and computer animation of virtual characters using elliptic partial differential equations.
… various applications pertaining to the design, modelling and animation of parametric surfaces using elliptic Partial Differential Equations (PDE) which are produced via the PDE method. Compared with traditional surface generation techniques, the PDE method is an effective technique that can …
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Modelling and Animation using Partial Differential Equations. Geometric modelling and computer animation of virtual characters using elliptic partial differential equations.
… various applications pertaining to the design, modelling and animation of parametric surfaces using elliptic Partial Differential Equations (PDE) which are produced via the PDE method. Compared with traditional surface generation techniques, the PDE method is an effective technique that can …
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Differential equation-based shape interpolation for surface blending and facial blendshapes.
… shape interpolation has been widely applied in geometric modelling and computer animation. It has the advantages of physics-based, good realism, easy obtaining of high- order continuity, strong ability in describing complicated shapes, and small data of geometric models. Among various …
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Efficient evaluation of functionally represented volumetric objects.
… is Function Representation (FRep). In FRep, a geometric object is de ned by a single continuous real-valued function of point coordinates. Generally geometric modelling is conducted in order to achieve visual outcome. In FRep the transformation of a function into a visual representation relies …
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Automatic tailoring and cloth modelling for animation characters.
… of tailoring expertises. In computer animation, geometric modelling methods are widely used for cloth modelling due to their simplicity and intuitiveness. However, because of the shortage of tailoring knowledge among animation artists, current existing cloth design patterns can not be used …
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Percolação em barragens de terra em regime permanente e transiente com o método dos elementos de contorno
… quadratic elements, which improve curved geometric modelling capabilities and can obey the tangent condition at the interface between the free and seepage faces. Physical and geometrical discontinuities are treated with the use of special non-nodal-collocation elements with nodes at their …
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KNOWLEDGE-BASED MODELLING FOR OFFSHORE HEAVY LIFT DESIGN
… develop and implement a suitable knowledge-based modelling technique for offshore heavy lift design. The understanding of concepts for heavy lift design prior to software implementation is essential to the success of any knowledge-based system development. The interdependent design constraints and …
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Polyhedra:representation and recognition
… systems intended for three dimensional solid modelling have traditionally used geometric representations incompatible with established representations in computer vision. The utilization of object models built using these systems require a representation conversion before they can be used in …
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Implementation of hierarchical design for manufacture rules in manufacturing processes
… features technology. In all engineering fields geometric modelling wluch accurately represents the shape of a whole engineering component has become accepted for a wide range of applications. To apply DFM rules or guidelines in manufacturing processes, they have to be systematised and organised …
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Developing criteria for PC-CADD evaluations : a case study
… design process, with a particular emphasis on geometric modelling, visualization and system interface. A set of performance criteria is derived along with their desirable attributes, so as to develop a comprehensive approach towards CADD evaluation.
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Numerical optimisation and theoretical analysis of complex microchannel heat exchangers
… combination of Computational Fluid Dynamics and geometric modelling techniques.
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Numerical investigation of the convective heat transfer coefficient of the human body using a representative cylindrical model
… calculations of the human body with some geometric modelling adjustments, thus resulting in similar representative equations for a human geometric model.
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Autonomous 3D Urban and Complex Terrain Geometry Generation and Micro-Climate Modelling Using CFD and Deep Learning
… requires a clear understanding and realistic modelling of the complex interaction between climate and built environment to create safe and comfortable outdoor and indoor spaces. This necessitates unprecedented urban climate modelling at high temporal and spatial resolution. The interaction …
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Automating the Generation of Geometric Information Models to Support Digital Twinning of Existing Rail Infrastructure
Geometric modelling from point cloud data is a fundamental step of the digital twinning process for rail infrastructure. Currently, this onerous procedure outweighs the anticipated benefits of the resulting model and expends 74% of the modellers’ effort on converting point cloud data to a model. …
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Developing Innovative Heat Exchangers in a Small-Medium Enterprise: Modelling and Implementation of Pillow Plate Heat Exchangers
… heat transfer principles to the unique geometric characteristics of pillow plates across diverse applications including natural convection, sensible heat transfer, sand cooling, with an only drafted conceptualisation for condensation heat recovery. Within this research work, experimental …
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A Modelling Framework for Lightning-Induced Common-Mode Currents in Photovoltaic Modules and Small Arrays
… and validate computational electromagnetic (CEM) modelling techniques to replicate cell-to-frame coupling in PV installations and to evaluate the magnitude and significance of lightning-induced common-mode (CM) currents. A range of PV modules, spanning small-scale to full-size units and a complete …
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The inertial properties of the German Shepherd
… Buchner et al. (1997).Using whole body mass and geometric modelling, multiple linear regression equationswere developed from the collected data so that they may be used to estimate segmentmasses and inertial tensors in living dogs. Using a custom Lycra suit and 44-markerfull-body marker set, …
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