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 16 of 16 for “"surface detection"”.
-
Determining the Location of Runway Exits Using Airport Surface Detection Equipment
<p>Airport surface detection equipment, such as ASDE-X, is used by thirty-five commercially operated airports throughout the United States. ASDE-X is responsible for the safe monitoring of aircraft movements as well as ground support vehicle operating on the airfield. Like most radar-based …
-
Surface detection and object recognition in a real-time three-dimensional ultrasonic imaging system
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.
-
Surface detection of alkaline ultramafic rocks in semi-arid and arid terrains using spectral geological techniques
… was confirmed by analysing data obtained from surface samples and airborne scanners. The coincidence of results obtained from field studies and airborne scanner data signifies that data acquired remotely are as useful as spectra obtained in the field, for mapping the extent of ultramafic …
-
Viscoelastic and nanomechanical behaviors of polymeric materials
… in order to obtain precise results, the sample surface needs to be accurately determined. In this work, we are able to show that the reported abnormal extreme surface stiffening of soft rubber, PDMS, is associated with surface detection error, i.e., the instrument determined sample surface is …
-
Supramolecular assemblies of conjugated sensory polymers and the optimization of transport properties
… films to harvest and direct energy to the surface detection layer toward ultimate signal amplification has been discussed. Third, the role of chemical structure of a sensory polymer in the selectivity of a conjugated polymer-based fluorescent sensor has been examined. In two different …
-
An automated and user-friendly optical tweezers for biomolecular investigations
… control improvements along with newly-developed surface detection software. I also describe cost-e ective optomechanical devices used in tweezers with potential for broader application. Fi- nally, I present new results of single-molecule force spectroscopy of DNA overstretch- ing as a function of …
-
Applications of ASDE-X Data to the analysis of airport surface operations
… little research has gone into studying airport surface operations. In recent years a surface surveillance system called Airport Surface Detection Equipment, Model-X (ASDE-X) has been installed at over 30 airports in the US as a safety device. The applications of the data being captured by these …
-
Methods to improve indentation results on soft materials and anisotropic biological tissues
… which mitigates the long-standing challenge of surface detection and broadens the use of instrumented indentation for soft materials. The MIA is experimentally validated on isotropic polyacrylamide gel with load-unload cycles in indentation. Furthermore, it is applied to accurate …
-
Detecting Impervious Cover with Artificial Lighting in Astronaut Photography from the International Space Station
… urban areas. Mapping the location of impervious surface becomes vital to properly managing drainage and runoff in a city, along with the health of fluvial ecosystems. Kotarba and Aleksandrowicz, in 2016, tested the ability of nighttime astronaut imagery from the International Space Station (ISS) …
-
Cone Penetration Testing and Hydrogeological Monitoring of a Retrogressive Landslide in Champlain Sea Clay
… profiling, locating remoulded layers for slip surface detection and characterizing the Champlain Sea Clay landslide near Ottawa. Due to the significant effects of the pore pressure distribution on slope stability and retrogressive behavior, a long term hydrogeological program was initiated …
-
Estimation of Runway Throughput with Reduced Wake Separation, Runway Optimization, and Runway Occupancy Time Consideration
… research extracts the historic data from Airport Surface Detection Equipment Model X (ASDE-X) for analysis. The Runway Exit Design Interactive Model (REDIM) is used to optimize the runway exit locations and reduce ROT. The runway throughput and safety factors are generated from a Monte Carlo …
-
Estimation of Runway Throughput with Reduced Wake Vortex Separation, Technical Buffer and Runway Occupancy Time Considerations
… time, approach speed, etc.) from the Airport Surface Detection Equipment, Model X (ASDE-X) data set. The analysis uses a modified version of the Quick Response Runway Capacity Model (RUNSIM). The main contributions of the study are: 1) identifying the technical buffer between in-trail arrivals …
-
Multi-bounce Returns for Specular Surface Mapping from Consumer-grade Flash LiDAR
… LiDAR on portable smartphones for 3D specular surface reconstruction. This is an important research problem as most traditional LiDAR systems fail to detect specular surfaces. As mirror and glass are everywhere, vision systems failing to detect specular surface can be detrimental. Applications …
-
The influence of runway occupancy time and wake vortex separation requirements on runway throughput
… La Guardia, and Newark airports based on Airport Surface Detection Equipment Model-X (ASDE-X) aircraft surveillance data. The findings of this study indicate that runway occupancy does not necessary scale with aircraft size. Small aircraft often occupy the runway as long as large aircraft, which …
-
Development of Aircraft Wake Vortex Dynamic Separations Using Computer Simulation and Modeling
… for this analysis were based on Airport Surface Detection Equipment Model X (ASDE-X) data records at ORD during a 10-month period in the year 2016, a 3-month period at DEN, and a 4-month period at LGA. Results indicate that further reducing wake vortex separation distances from the FAA's …
-
Inverse techniques: problems in optics and gas sensing
… microseepages, leak hydrocarbons to their surface. Detection of these hydrocarbons can indicate the presence of oil reserves. LightTouch measures Ethane to sub-part-per-billion sensitivity at multiple positions across a survey area. Locating the source of the Ethane from the sparse downwind …