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.
Results
Showing 1 to 20 of 231 for “"sampler"”.
-
A personal thermophoretic sampler for airborne nanoparticles
… of their small size. A cost-effective personal sampler is necessary to evaluate levels of worker exposure to these materials to determine the relative levels of individual risk. Such a sampler must be capable of collecting nanoparticles with high efficiency for subsequent analysis of size, …
-
Development of a semivolatile aerosol dichotomous sampler
… to develop the semivolatile aerosol dichotomous sampler (SADS) and their results. The first section describes the theoretical background of SADS and the validation of its performance using numerical simulations and experimental data. SADS was proposed as an alternative method to overcome some of …
-
Flexible birth-death MCMC sampler for changepoint models
… Architektur eines Markov Chain Monte Carlo Samplers, der Bayessche Inferenz für eine Vielzahl von Changepoint-Modellen erlaubt. Die Struktur dieser Klasse von Modellen besteht aus zwei stochastischen Prozessen. Der erste Prozess wird entweder direkt beobachtet oder indirekt durch, …
-
Towards Enhanced Proposals for PINN-Based Neural Sampler Training
… and structural biology. Annealing-based neural samplers seek to amortize sampling from unnormalized distributions by training neural networks to transport a family of densities interpolating from source to target. A crucial design choice in the training phase of such samplers is the proposal …
-
Bayesian analysis of finite mixture distributions using the allocation sampler
… jump Markov chain Monte Carlo (RJMCMC) sampler while Stephens (2000a) uses a Markov birth-death process approach sample from the posterior distribution. In this thesis a Markov chain Monte Carlo method, named the allocation sampler. This sampler differs from the RJMCMC method reported in …
-
Groundwater monitoring in three dimensions using the multi-level sampler
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1990.
-
Composition No. 1, quintet for two violins, viola, cello, and sampler
Composition No. 1 is a work for string quartet and interactive electronics. The work is around twenty minutes long and separated into five movements, all of them elided through the use of attaccas. The work's organizational principle is a progression of thematic material, starting with a simple …
-
Bayesian estimation of Thurstonian ranking models based on the Gibbs sampler
… Monte Carlo studies demonstrate that the Gibbs sampler is applicable to ranking problems with a large number of objects. To improve the efficiency of the Gibbs sampler for estimating constrained and unconstrained Thurstonian ranking models, two procedures, importance sampling and truncated …
-
Use of Automated Sampler to Characterize Urban Stormwater Runoff in Pecan Creek
… study was to use the Global Water Stormwater Sampler SS201 to characterize the urban runoff in Pecan Creek. Location of the samplers was influenced by land use and ease of installation. Determination of the constituents for analysis was modeled after those used in the NPDES permit for seven …
-
Using Polar Organic Chemical Integrated Sampler (POCIS) to monitor pesticide fluxes in Alpine streams
… proposed over the past 20 years based on passive samplers, including the Polar Organic Chemical Integrative Sampler (POCIS). POCIS is a simple and robust passive sampler, composed of a receiving phase enclosed between two polymeric membrane sheets, like an Oasis HLB phase and by two …
-
Assessment of a Passive Sampler for Aquifer Microbial Community Profiling and Comparison of Porous Media
… fashion. With this goal, we developed a passive sampler that employs removable cartridges containing solid media designed to re-create the aquifer environment in a controlled fashion and support consistent, repeatable, time-series sampling. A bench-scale, continuous-loop study compared microbial …
-
An assessment of the use of the Jackass penguin as a sampler of the marine environment
… of the jackass penguin Spheniscus demersus as a sampler of the marine environment is assessed. Between February 1987 and July 1988, 638 monthly diet samples were obtained from adult jackass penguins at west - (Marcus and Jutten Islands) and southwest-coast (Dyer Island) colonies off South Africa, …
-
Aerosol Samplers Comparison: IOM Dual Sampler (Inhalable & Respirable) vs Conventional Methods for Assessing Welders Exposure to Manganese
… of Occupational Medicine (IOM) dual fraction sampler is capable of providing both inhalable and respirable portions of airborne particles by using only one sampling device. For this study, the IOM dual fraction sampler was compared with OSHA method ID-125G for determining occupational exposure …
-
Quantitative analysis of volatile organic compounds (VOCs) in soil via passive sampling : polyethylene sampler design and optimization
… A polyethylene (PE) quantitative passive sampler using performance reference compounds and deployed via a hand driven probe is proposed as a solution. Additionally, a 1D diffusion mass transfer model was developed in MATLAB to predict the mass uptake into the PE sampler over time. The …
-
Slice sampling on Riemannian manifolds
This thesis is concerned with hybrid slice samplers for approximate sampling of distributions on Riemannian manifolds. First for distributions on the Euclidean unit sphere, and then for distributions on general Riemannian manifolds we introduce a geodesic-based hybrid slice sampler, called geodesic …
-
From Prototype to Production: Product Development of a Modular Automated Milk Sampling Device for Conventional Dairy Farms
… labor intensive. Therefore, an automated milk sampler is developed to reduce the time and labor needed to collect milk samples. This thesis discusses in detail about the product development process of the automated milk sampler, which shows the path of the automated sampler from design …
-
Trapping Efficiencies for the BLH-84, Helley-Smith, Elwha, and TR-2 Bedload Samplers
… for four types of pressure-difference bedload samplers – a standard Helley-Smith (intake-nozzle width and height of 76.2 mm x 76.2 mm), BLH-84 (76.2 mm x 76.2 mm), Elwha (203 mm x 102 mm) and Toutle River-2 (305 mm x 152 mm) a standard Helley-Smith, US BLH-84 (both with intake nozzle dimensions …
Page 1 of 12