Global ETD Search
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Showing 1 to 20 of 299 for “"Surrogates"”.
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An Investigation Into Replacement Cost Surrogates
Three methods of generating replacement cost data were utilized to produce figures which were compared with data reported under ASR #190. The generation methodologies used were those developed by Frank, Kratchman, and Falkenstein and Weil. The comparisons involved not only the data itself, but …
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Machine learning surrogates for multiphysics design
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms
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Programming with Neural Surrogates of Programs
… to solve software development challenges. Surrogates are typically machine learning models trained on input-output examples of the program under consideration. With surrogate compilation, programmers train a surrogate that replicates the behavior of the original program to deploy to …
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Scalable Surrogates for Counts and Computer Experiments
Data collected by the Interstellar Boundary Explorer (IBEX), recording counts of heliospheric energetic neutral atoms (ENAs), exhibit a phenomenon that has caused space scientists to revise hypotheses about the physical processes, and computer simulations under those models, that are in play at the …
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Computer Experimental Design for Gaussian Process Surrogates
… on the design problem under Gaussian process surrogates. The first work demonstrates empirically that space-filling designs disappoint when the model hyperparameterization is unknown, and must be estimated from data observed at the chosen design sites. A purely random design is shown to be …
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Deep Gaussian Process Surrogates for Computer Experiments
… space-filling designs and yields more accurate surrogates for fixed simulation effort. I propose new sequential design schemes that rely on optimization of acquisition criteria through evaluation of strategically allocated candidates instead of numerical optimizations, with a motivating …
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Nonparametic-validated computer-simulation surrogates : a Pareto formuation
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
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Efficient computer experiment designs for Gaussian process surrogates
Due to advancements in supercomputing and algorithms for finite element analysis, today's computer simulation models often contain complex calculations that can result in a wealth of knowledge. Gaussian processes (GPs) are highly desirable models for computer experiments for their predictive …
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Aerosolization of Ebola Virus Surrogates in Wastewater Systems
… generated by each system, spiked Ebola virus surrogates into each system, and determined the emission rate of viruses into the air. While the number of aerosols released ranged from 105 to 107 per flush from the toilets or per minute from the lab-scale models, the total volume of aerosols …
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Physics-informed neural surrogates for next-generation aerothermochemical modeling
… architectures, these machine-learning-based surrogates achieve greater reliability, accuracy, and generalization than many existing approaches, in which physics constraints are often absent or only weakly enforced. The final stage couples the surrogates with CFD solvers via operator …
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Evaluating taxonomic surrogates for floristic quality assessment of wetlands
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-05-01
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NeuralMOVES: Extracting and Learning Surrogates for Diverse Vehicle Emission Models
Technological advancements and interventions in the transportation sector play a crucial role in addressing climate change, given its major contribution to greenhouse gas emissions. The industry actively explores electrification, automation, and Intelligent Infrastructure to mitigate emissions. …
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Psychological well-being, maternal-foetal bonding and experiences of Indian surrogates
… international couples seeking surrogacy and the surrogates themselves, clinics compromising health of surrogates for profit, the stigmatisation of surrogacy in India, and the constant surveillance of these women living in a ‘surrogate house’, have raised concerns regarding the potentially …
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Psychological Well-Being, Maternal-Foetal Bonding and Experiences of Indian Surrogates
… international couples seeking surrogacy and the surrogates themselves, clinics compromising health of surrogates for profit, the stigmatisation of surrogacy in India, and the constant surveillance of these women living in a ‘surrogate house’, have raised concerns regarding the potentially …
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Jp-8 Surrogates For Diesel Engine Application: Development, Validation, And Cfd Simulation
… JP-8 fuel.</p> <p>A total of six different surrogates, with maximum number of components limited to four, was developed using a MATLAB code, Ignition Quality Tester (IQT), and HYSYS simulation software. Then, all the surrogates were tested in the IQT at different charge air temperatures, and …
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Construction and validation of computer-simulation surrogates for engineering design and optimization
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1995.
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Data-Driven Methods for Modeling and Predicting Multivariate Time Series using Surrogates
… this thesis we explore various methods of using surrogates to generate more reliable and timely forecasts for noisy target signals. We primarily investigate three key components of the forecasting problem viz. (i) short-term forecasting where surrogates can be employed in a now-casting framework, …
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Assessment of chemical markers as surrogates for efficacy and safety of Rooibos extracts
Research interest in the bioactive polyphenols of rooibos. to which its health-promoting properties are attributed, has escalated. Defining the quality attributes for assessing the efficacy of rooibos health products forms part of a quality control system. The aim of this study was to identify …
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"""A Better Guardianship"": Mothers, Surrogates, and Female Education in Domestic Literature, 1790--1860"
Modern critics of antebellum American literature have read domestic literature as bolstering the development of liberal-capitalist culture, including sentimental ideals of home and motherhood. This critical account does not explain, however, the widespread and recurrent evidence of ambivalence …
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Biomechanical Response of Human Volunteers and Surrogates in a Variety of Loading Regimes
… laboratory experiments with human volunteers and surrogates, such as anthropomorphic test devices (ATDs) and post mortem human surrogates (PMHSs). The overall objective of this dissertation is to quantify the biomechanical response to loading regimes present in motor vehicle collisions, falls, and …
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