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 43 for “"model test"”.
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Plate anchors for offshore foundations in sand and clay
… drag-in plate anchors. <br/><br/>Physical modelling was used to analyse the drag behaviour of this anchor. Tests were completed in a transparent clay surrogate, which was consolidated through the application of a pressure gradient across the sample‟s depth. The observations from these tests …
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Risk and return in institutional commercial real estate : a fresh look with new data
… management strategies. Equilibrium asset pricing models are tools that identify and quantify the risk factors priced by the capital market and establish risk adjusted LONG RUN expected returns. This thesis creates portfolios of properties by property type, geographic location and asset size. Total …
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Advancements of Stepped Planing Hulls
… by prediction method, and numerically. A model test was conducted to provide a systematic understanding of the effects that displacement and step location have on the performance of a stepped planing hull. Ten different step configurations were tested at three different displacements and …
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Hydrodynamic interaction of passing ships in a shallow asymmetric canal
A theoretical model and associated computer program are developed to compute hydrodynamic interaction forces and moments on passing ships in a shallow asymmetric canal, by applying generalized Lagally's theorem. Steady lift force on the ships are estimated following standard slenderbody approach. …
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A New Method for Determining Average Reservoir Pressure from a Single Well Buildup Test
This work presents a computer model which, when used in conjunction with a single well buildup test in a multiple well unsteady state oil reservoir, can give the true average reservoir pressure without prior knowledge of drainage area shapes. To sUbstantiate the accuracy of the model, test runs …
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Overtrawlability and Mechanical Damage of Pipe-in-Pipe
… wall pipes. Experiments are conducted, and FE models and semi-empirical relationships are developed and validated. The model test and scaling law are reviewed and improved.
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Evaluation of Paper Test Strategies on Computer-Administered Tests: The Impact of Item Response Marking on Test Performance
Marking on paper tests (e.g., crossing-out incorrect answers) has been associated with improved test performance, especially for students with higher test anxiety. Despite these benefits, marking has not been implemented or evaluated on computer-administered tests. After measuring test anxiety in …
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Modelo simplificado para análise de lançamento de estruturas offshore tipo jaqueta
… proceed is based on his own experience and/or in model test results. The bibliography is reduced to very few papers, and the simplifications introduced in some of them are not necessarely justified. The main objective of the present work is to develop a mathematical theory based on 2nd Newton's …
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Evaluation of behavior and the radial shear strength of a reinforced concrete containment structure
… of the 1/6-scale reinforced concrete containment model tested at Sandia National Laboratories. The containment model was pressurized to more than three times its design pressure until a tear in the liner terminated the test. Deformation data from the model test was used to interpret behavior and …
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Development and validation of a conceptual design program for unmanned underwater vehicles
… systems engineering, and submersible design. Model test data and computational fluid dynamics (CFD) software were used to validate the empirical equations selected for the resistance module. The pressure vessel module, including a genetic algorithm to generate viable scantlings, was validated …
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Measuring the Weak Charge of the Proton and the Hadronic Parity Violation of the N →Δ Transition
… to a precision of 4%. QpW has firm Standard Model prediction and is related to the weak mixing angle, sin20W, a well-defined Standard Model parameter. Qweak will probe a subset of new physics to the TeV mass scale and test the Standard Model. The details of how this measurement was performed …
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Using LiDAR to measure subsurface movement of slow-moving landslides and study the interaction between the soil and LiDAR scanning targets
… research are as follows:</p><p>1. Several error tests were done to prove that the three-dimensional LiDAR scanner used in this research can precisely obtain the three-dimensional position, the displacement and the rotational angle of artificial scanning targets.</p><p>2. Two kinds of special …
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A Hybrid Method for Predicting Lift and Drag of Semi-planing/Semi-displacement Hull Forms
… methods have been made with available model test and/or analytical data. With this, the concept of the Semihull (Vorus, 2005) is revisited. Some results are given concerning the validity of the Semihull as compared to a traditional displacement ship. Hull form optimization is also …
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Numerical Models for Scour and Liquefaction Around Object Under Currents and Waves
… liquefaction, a three-dimensional numerical model for the sea bed response under free surface water waves is constructed. Free water surface is modeled by volume of fluid (VOF) method and water waves are generated by numerical wave-maker boundary condition. An iterative numerical scheme is …
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Vortex-induced vibration of slender structures in unsteady flow
… of this research is to develop a VIV prediction model for slender structures under top-end periodic motions. The key approach to this problem requires identifying the dimensionless parameters important to the unsteady VIV. A set of data from a large-scale model test for highly compliant risers …
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Numerical Simulation of Surface Effect Ship Air Cushion and Free Surface Interaction
… dynamics simulations of surface effect ship model tests. The model tests being simulated are of a generic T-Craft model running in calm seas through a range of Froude numbers and in two head seas cases with regular waves. Simulations were created using CD-adapco's STAR-CCM+ and feature …
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The influence of caprock on blast fragmentation distribution
… describes the development of a small-scale model of a caprock-laden quarry blast and discusses the results from that testing. The purpose of this testing was to provide insight into the reasons for poor caprock breakage during blasting.</p> <p>Small-scale test blocks were poured using a weak …
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Guidelines for designing the overhead transmission tower foundations adjacent to cohesionless slopes
… components: i) conducting a series of laboratory tests on two types of overhead transmission tower foundations, namely: pad and inclined chimney footing and vertical and batter pier foundations, situated in sand near sloped grounds to evaluate their response under combined loads and comprehensive …
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AN INVESTIGATION INTO FOUNDATIONAL CONCEPTS RELATED TO SLOPE: AN APPLICATION OF THE ATTRIBUTE HIERARCHY METHOD
… related to slope, to determine a cognitive model hypothesizing how this understanding develops, and to design an instrument to assess understanding of selected foundational concepts related to understanding slope as described in the model. The instrument was administered to a sample of …
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