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 897 for “"Field data"”.
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Wheel Path Wandering Based On Field Data
… of heavy vehicles' wandering in the field. Generally, the factors influencing vehicle lateral placement can be divided into seven categories, but only four factors are considered to be the most important in this research: weather, visibility, horizontal curve, and traffic condition. …
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Reliability estimation using doubly censored field data
… under the assumption that the available data set is obtained from field performance and is consequently censored on both the left and the right. The extreme lack of data makes estimation very difficult. Estimation equations are defined for both maximum-likelihood and moment based …
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Numerical and field data analysis of drill stem vibration
… Vibration modeling, analysis of vibration data, and specialized vibration reduction tools are methods in use to prevent and mitigate severe vibrations.</p> <p>A drill stem vibration model was created using nonlinear strain formulation which couples the axial, lateral and torsional vibration …
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Studies on real world visual field data in glaucoma
… it is important to monitor how the visual field (VF) changes over time with perimetry in preventing vision from deteriorating to a stage where quality of life is affected. However, there is little evidence of how clinical measurements correlate with meaningful quality of life landmarks for …
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Numerical and field data analysis of integral abutment bridges
DSpace SAF Submission Ingestion Package generated from Vireo submission #9491 on 2016-07-07 at 13:33:06
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Combining laboratory and field data in rail fatigue analysis
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1993.
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Highway work zone capacity estimation using field data from Kansas
… were selected. An average of six days’ worth of field data was collected, from mid-October 2013 to late November 2013, at each of these work zone sites. Two capacity estimation methods were utilized, including the Maximum Observed 15-minute Flow Rate Method and the Platooning Method divided into …
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An analysis of IQSY meteor wind and geomagnetic field data,
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1970.
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Verification of the dissipated energy based fatigue model using field data
… strain in the asphalt layers of flexible airfield pavements is proposed based on the concept that HMA fatigue failure is associated with a significant reduction in HMA layer modulus, usually taken as 50 percent. Falling Weight Deflectometer (FWD) testing results collected from flexible …
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An Approach to Near Field Data Selection in Radio Frequency Identification
… for users to control access to their individual fields of data. This leaves them more available to unauthorized parties, and more prone to abuse. Here, then was undertaken a means to test a novel RFID card technology that allows overlays to be used for reliable, reversible data access settings. …
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Statistical Modeling and Predictions Based on Field Data and Dynamic Covariates
… modeling and predictions based on lifetime data, degradation data, and recurrent event data. The datasets used in this dissertation come from the field, and have complicated structures. The dissertation consists of three main chapters, in addition to Chapter 1 which is the introduction …
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Spatial modeling of soil salinity using remote sensing, GIS, and field data
… soil salinity maps using remote sensing data. The techniques used include integrating field data, geographic information systems (GIS), remote sensing, and spatial modelling techniques. Com and alfalfa crops were selected as indicators of soil salinity during 2001 and 2004 respectively. …
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Soil moisture dynamics from satellite observations, land surface modeling, and field data
… and low system errors for the remotely sensed data.</p><p>The error characteristics of remotely sensed measurements can enhance the utility of satellite observations. The remote sensing measurements can provide relative soil moisture conditions to improve runoff predictions and analyze land …
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Genetic Analysis of Sheep Discrete Reproductive Traits Using Simulation and Field Data
… (REML) in genetic analyses of categorical data was evaluated using simulation and field data. Four genetic models were used to simulate underlying phenotypic variates, which were derived as the sum of additive genetic and environmental effects (Model 1A and 1B) or additive genetic and …
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Assessment of HEC-18 equations for NCHRP abutment scour based on Kansas field data
… due to abutment scour. This new method requires field review. The purpose of this report is to verify the validity of the NCHRP Abutment Scour Equations derived from laboratory studies. Given the requirement by several states to use the new method, finding the right equations to use for the …
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Assessment of HEC-18 scour equations for bottomless culverts based on Kansas field data
… scarce. New studies have been conducted and need field review. The purpose of this report is to verify the validity of bottomless culvert equations derived from laboratory studies. Given the likely increase in interest in bottomless culverts, finding the right equations to use for the design of …
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Characterization of Watersheds on Fort Benning Military Reservation: Comparison of Field Data to Watershed Parameters
… were analyzed using both physically collected data and computer modeling data. Physical data collected included total suspended solids (TSS) and grain size analysis using the Wolman Pebble Count method. Computer modeling analyzed the watersheds using ArcGIS 9.3 for comparison to physical data. …
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A Statistical Analysis Of Construction Equipment Repair Costs Using Field Data & The Cumulative Cost Model
… hours of use. The study was conducted using field data on 270 heavy construction machines from four different companies. Nineteen different linear and transformed non-linear models were evaluated. A second-order polynomial expression was selected as the best. It was demonstrated how this …
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A GIS compilation of field data from the Smith's Fork Archaeological Site (23CL223), Clay County, Missouri
The Smith's Fork (23CL223) archaeological site, located in Clay County, Missouri was investigated using pedestrian survey, ground penetrating radar, shovel testing, archaeological excavations and a geologic study of river terraces. Used in concert and compiled in a Geographic Information Systems …
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