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 60 for “"Field Monitoring"”.
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Field monitoring of integral abutment bridge approach slabs
… observed similar cracking in IAB approach slabs. Field inspections of existing approach slabs for bridges in Illinois suggest there are common crack patterns among mainline interstate highway bridges and also in cross-road bridges. To study the long-term behavior of IAB approach slabs, a four-lane …
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Development of a Field Monitoring System for the Northside Drive Bridge
… aims to create a system for real-time structural monitoring of bridges, ultimately offering a reliable method to accurately estimate a bridge’s remaining fatigue life. Standard procedures exist to calculate the remaining fatigue life of steel bridges. However, such procedures rely on conservative …
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Field monitoring and numerical analysis of two Illinois integral abutment bridges
… modeling assumptions through implementation of a field monitoring program. Two Illinois IABs were instrumented to monitor: i) global bridge movements, ii) pile, deck, girder, and approach slab strains, and iii) rotations at different abutment interfaces. Field monitoring results corroborate that …
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Six-month field monitoring of point-of-use ceramic water filter by using H₂S paper strip most probable number method in San Francisco Libre, Nicaragua
Monitoring programs are an essential concomitant to household drinking water treatment. The author implemented a 6-month monitoring program to assess the performance of the Potters for Peace (PFP) water filter in San Francisco Libre, Nicaragua. Both analytical methods and surveys were used to study …
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Fast and Accurate Image Feature Detection for On-The-Go Field Monitoring Through Precision Agriculture. Computer Predictive Modelling for Farm Image Detection and Classification with Convolution Neural Network (CNN)
… to preserve the natural environment. First, field research was conducted to determine the extent of the problems faced by farmers in agricultural production. This allowed us to refine the research statement and the level of technology involved in the production processes. The advantages of …
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Advances in Magnetic Resonance Phase‐Contrast Velocity Mapping
… eddy currents are studied using dynamic magnetic field monitoring demonstrating that mechanical vibrations can have a large impact on flow quantification. Approaches for background phase offset correction based on field monitoring data are discussed. To address the long scan times, dual slice …
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Effects of thermal loads on Texas steel bridges
… bearings, and even the bridge piers. Previous field monitoring of steel trapezoidal box girder bridges has shown that thermal stresses on the order of ±5 ksi were not uncommon under regular daily thermal cycles. Stresses induced during annual thermal cycles may be potentially larger than those …
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Performance of Fouled Railroad Superstructure Subjected to Traversing Heavy Haul Trains
… testing of fouled sub-structure material, field monitoring of fouled track section at the test site and finite element analysis of the fouled track performance. First, isotropically consolidated drained cyclic triaxial tests were conducted on fouled sub-ballast retrieved from the test site. …
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An investigation of the effects of temperature and suspended sediment on the Landsat MSS reflectance of John H. Kerr Reservoir
… collection effort in John H. Kerr Reservoir. Ten field monitoring trips were performed between March 30, 1981 and March 3, 1982. The temperature, velocity, and depth data from those trips are contained in Appendix A. Plots of temperature versus depth at the stations chosen in the reservoir are …
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Elastomeric bearings in high demand applications : numerical study and experimental validation
… bearings as well as the scantiness of field, laboratory, and numerical investigations on them. This investigation reported in this dissertation is part of a research project including material study, full-scale testing, field monitoring, and finite-element studies, with a focus …
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AN IMPROVED ROCK MASS BEHAVIOR NUMERICAL MODEL AND ITS APPLICATIONS TO LONGWALL COAL MINING
… using 3-D numerical analyses, 5) Implement and field demonstrate developed geometries, and 6) Monitor performance of implemented geometries through field monitoring. An alternative method to estimate the residual strength of a rock mass is developed. A yielded rock mass and a rock fill have …
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Monitoring and modelling the long-term performance of Dublin Port Tunnel
… an integrated assessment based on innovative field monitoring (i.e., wireless sensor network) and advanced numerical modelling (i.e., finite element modelling), where previous investigations mainly concentrated on the responses of a single tunnel section to short-term external disturbances …
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Optical measurement of deformation fields and surface processes with digital speckle correlation
… the measurement of three-dimensional deformation fields and surface processes, i.e. changes in the microstructure of the surface. The method is based on a detailed analysis of the changes in the speckle field that is scattered from a laser-illuminated rough surface, using digital image processing. …
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Removal of complexed iron by chemical oxidation and/or alum coagulation
… and chlorine dioxide. Both laboratory-scale and field monitoring studies were performed. The relative molecular weight distribution (MWD) of the DOC present was analyzed to evaluate how changes in this parameter affected the efficiency of soluble iron removal by oxidation. In addition, the MWD of …
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Monitoring and prediction of surface movements above underground mines in the eastern U.S. coalfields
… methods for the eastern United States coalfields. The methods are based on an extensive data bank, which includes a total of twenty three panels, from nine case studies, which were instrumented during this research effort. An extensive field monitoring program, utilizing a digital computer …
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A software architecture towards automated data-driven multi-resolution crop scouting with an unmanned aerial system
Crop scouting and field monitoring is necessary to track the status of crops planted in the field throughout the season. Developing a sampling plan to determine the path through the field and the number of points to sample helps minimize the amount of time spent scouting while maximizing the …
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Effects of storage on water treatment plant sludges
… greatly when readings were below this level. Field monitoring and sampling of the clarifiers at Lee Hall WTP and Harwood's Mill WTP from April to July showed that the removal efficiencies of the clarifiers was not related to in-basin sludge storage. This conflicted with a later portion of the …
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The engineering geology and stability of the rapidly alternating limestone and mudrock sea cliffs of glamorgan
… Geomorphological mapping and appraisal. 2) Field Monitoring. 3) Quantitative assessment of rock mass geometry, mineralogy, engineering properties and physical/physico-chemical behaviour. <br/>The north coast of the Bristol Channel is exposed to severe marine attack. Weak lithologies are …
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