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 85 for “"model construction"”.
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Uncertainty, complication and optimal model construction
… partitions in problems described by complicated models with associated embedded optimization requirements. The particular models studied are linear control models in which the embedded optimization is that of observer/ controller design. The existence of an optimal knowledge partition rests on …
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Automatic model construction with Gaussian processes
… visualizing and describing a large class of models, useful for forecasting and finding structure in domains such as time series, geological formations, and physical dynamics. These models, based on Gaussian processes, can capture many types of statistical structure, such as periodicity, …
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Methodology for VHDL performance model construction and validation
… are frequently used to construct performance models to represent systems early in the design process. This research study has resulted in the development of a methodology to construct VHDL performance models which will help to significantly reduce the time from an initial conception to a …
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METHODS COMPARISON ON FLOW MODEL CONSTRUCTION AND PARAMETER ESTIMATION
Knowing the equation of an unknown dynamical system is essential when trying to apply optimal control. Sometimes researchers do not have a comprehensive knowledge to a nonlinear system. The unknown part might be the function representing the relation between states (e.g. transfer function), or key …
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Building robust chemical reaction mechanisms : next generation of automatic model construction software
Building proper reaction mechanisms is crucial to model the system dynamic properties for many industrial processes with complex chemical reaction phenomena. Because of the complexity of a reaction mechanism, computer-aided reaction mechanism generation software appeared in recent years to help …
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Adaptive slicing of cloud data for reverse engineering and direct rapid prototyping model construction
In reverse engineering, conventional surface modelling from point cloud data is time-consuming and requires expert modelling skills. One of the innovative modelling methods is to directly slice the point cloud along a direction and generate a layer-based model, which can be used directly for …
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Constructing realistic Szekeres models from initial and final data
… offers a wide range of possibilities for modelling cosmic structure. Within this family, the quasispherical case is the best understood, and is interpreted as being an arrangement on non-concentric mass shells, each a density dipole. Here we present a model construction procedure for the …
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The development of a SPICE2 model for transient simulation of the Schottky Transistor
… its effect on circuit applications, a computer model has been developed for the device. The focus of this research is the development of such a model for SPICE2 (a circuit simulation computer program) using a new method for model construction. This new method developes a model by approximating …
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Grounded Learning Experience: Helping Students Learn Physics through Visuo-Haptic Priming and Instruction
… learning experience on college students' mental models of physics systems. The grounded learning experience consisted of a priming stage and an instruction stage, and within each stage, one of two different types of visuo-haptic representation was applied: visuo-gestural simulation (visual …
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A meta-language for systems architecting
… OPN was able to significantly change the modeling and architectural reasoning process by automating a number of manual model construction, manipulation, and simulation tasks.
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Broadband Macromodeling Techniques for Interconnects and Electronic Packages
… proposed to generate an accurate broadband macromodel for passive interconnect and packages. The physical characteristics of the structures such as stability, causality, and passivity are preserved during the model construction. Also, a new method is formulated based on vector-fitting method in …
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Malaria Risk on Ancient Roman Roads: A Study and Application to Assessing Travel Decisions in Asia Minor by the Apostle Paul
<p>This study models malaria risks for travelers on ancient Roman roads with the goal of providing a tool for historical assessment of travel accounts from antiquity. The project includes: identification of malaria risk factors and associated spatial datasets, malaria risk model construction, …
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Subgradient methods for convex minimization
… Such a minimization arises, for example, in model construction, system identification, neural networks, pattern classification, and various assignment, scheduling, and allocation problems. To solve convex but not differentiable problems, we have to employ special methods that can work in the …
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The role of metaconceptual evaluation in fifth grade students' construction of explanatory models of magnetic phenomena
… evaluation facilitates fifth grade students’ construction, evaluation, and revision of their explanations for magnetic phenomena. Although much recent research emphasized the importance of student modeling and model construction, the topic of magnetism is typically taught as either simply …
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Support-vector-machine based automatic performance modelling and optimisation for analogue and mixed-signal designs
… requirement for high efficiency performance modelling and optimisation methodologies in AMS synthesis systems. Recently, the support vector machine (SVM) method has been introduced into this challenging field. This research has studied the application of SVMs to AMS performance modelling in …
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Face Recognition and Expression Recognition using Morphable Models
<P>IN THIS THESIS, WE PROPOSE A MORPHABLE MODEL CONSTRUCTION FRAMEWORK THAT MINIMIZES BOTH THE GLOBAL DISTANCE BETWEEN SURFACES (GLOBAL ENERGY) AS WELL AS THE DISTANCE BETWEEN CORRESPONDING FACE FEATURES ON DIFFERENT FACES (LOCAL ENERGY). LOCALIZED FACE FEATURE POINTS SUCH AS EYE CENTERS, NOSE-TIP, …
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DATA-DRIVEN MULTI-SCALE MULTI-PHYSICS MODELLING OF THERMAL STRESS AND DISTORTION IN ADDITIVE MANUFACTURING
We construct a multi-scale multi-physics modeling framework to predict the thermal stress and distortion in AM fabrications. With the proposed approach, the rough surfaces and internal voids can be well incorporated. The coupled CFD-FEM approach are utilized to simulate the two typical powder-based …
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Variation in mental models of text as a function of genre
… suggested that the characteristics of mental models formed from one text genre would be different from the mental models formed from another genre (Brewer, 1980; Johnson-Laird, 1983). Readers of survey texts and route texts were faster and more accurate in verifying spatial information that …
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Time-series analysis using orthogonal polynomials
… study of non-linear dynamics have encouraged the construction of models and simulators of non-linear time-series. Researchers in the field of both science and statistics have come up with innovative methods that are useful in extracting information from systems that exhibit non-linear dynamics. …
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Coordinated part delivery using distributed planning
… mobile robot platform to deliver parts around a model construction site. The platform's robots, specialized into delivery robots and assembly robots, use a distributed coverage algorithm to determine where parts should be delivered. The robots consist of a mobility platform (iRobot iCreate), a …
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