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 8 of 8 for “"Underground Environments"”.
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Estudo geomorfológico em ambiente subterrâneo: gruta do Lobo Guará, município de Santa Rita, Paraíba.
… one of the major impacts that are affecting the underground ecosystem. This environment has an underground sandstone composition of cement and lime in it the presence of speleothems is almost nil, and its flora and fauna prove to be quite fragile, and these highly adapted to the site. Thus, it is …
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A fuzzy logic solution for navigation of the Subsurface Explorer planetary exploration robot
… performance of acoustic sensors is degraded in underground environments. Fuzzy logic is a satisfactory means of addressing imprecision in plant characteristics, and has been implemented in a variety of autonomous vehicle navigation applications. However, most fuzzy logic algorithms that perform …
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Evolving and Proactive Risk Modelling in Underground Working Environments
Underground environments are critical to global resource extraction and urban development, yet they are inherently hazardous due to their dynamic and unpredictable nature. Rapid changes, including methane accumulation and environmental fluctuations, threaten worker safety, operational continuity, …
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Physiological and behavioural responses to temperature and humidity in fossorial amphibians
… over two centuries. However, fossorial (i.e., underground-dwelling) amphibians remain comparatively understudied despite the unique environmental pressures that they experience. The overarching goal of this thesis was to understand how temperature and humidity affected the physiology and …
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The Resilient Micro Flyer: a New Collision-tolerant Autonomous Robot
… traversing and searching within highly confined environments including manhole-sized tubes. The robot is particularly lightweight and agile, while it implements a collision-tolerant design which renders it resilient during forcible interaction with the environment. The overall rigid design of the …
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A Boundary Element Method for Thermo-poroelasticity with Applications in Rock Mechanics
… the stresses and pore pressure fields around an underground opening. This is due to the fact that thermal loading induces a volumetric deformation because of thermal expansion/contraction of both the pore fluid and the rock solid. Volumetric expansion can result in significant pressurization of …
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Unmanned Aerial Vehicle (UAV) navigation and image processing techniques for underground tunnel infrastructure assessment
… of lifeline transportation systems. Large-scale underground infrastructure comprises twin tunnel cross passages, shafts, caverns, and other complex geometries, which poses great challenges for efficient onsite inspection and even health and safety issues for workers in underground environments. …