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 143 for “"swarms"”.
-
Particle swarms in confining geometries
… transport will be investigated using particle swarms; collections of hydro-dynamically interacting particles which exhibit group behavior. The effects of fluid viscosity, particle properties, fracture geometry, and fracture aperture on swarm behavior were experimentally investigated. ^ Swarm …
-
Guidance and control of swarms of spacecraft
… flying have been extended to spacecraft swarms made up of hundreds to thousands of 100-gram-class spacecraft known as femtosatellites. The large number of spacecraft and limited capabilities of each individual spacecraft present a significant challenge in guidance, navigation, and …
-
Signal Absorption-Based Range Estimator for Undersea Swarms
Robotic swarms are increasingly complex above the waterline due to reliable communication links. However, the limited propagation of similar signals in the ocean has impacted advances in undersea robotics. Underwater vehicles often rely on acoustics for navigation solutions; however, this presents …
-
Pursuit and Evasion of Drone Swarms and Turrets
… remotely-controlled drones makes large drone swarms a present reality. Swarms of drones can be useful for overwhelming defensive positions and then loitering in hostile areas near potential adversaries. Even small commercially-available quadcopters can be armed with explosives and can become a …
-
Body and brain quality-diversity in robot swarms
… and morphological diversity in evolved swarms overall, which was beneficial in the most complex task environment.
-
Coordinated Control of Robotic Swarms in Unknown Environments
This thesis gathers the work carried out by the author in the last three years of research and it concerns the study and implementation of algorithms to coordinate and control a swarm of mobile robots moving in unknown environments. In particular, the author's attention is focused on two different …
-
Design & engineering of conformationally switchable artificial metalloproteins (swArMs)
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-08-01
-
Signal absorption-based range estimator for undersea swarms
Robotic swarms are becoming increasingly complex on the surface and in air due to highspeed and reliable communication links, Global Positioning Satellites (GPS), and visual support to relative navigation. However, the limited propagation of these signals in the ocean has impacted similar advances …
-
A practical search with Voronoi distributed autonomous marine swarms
The search for underwater threats in littoral regions is a problem that has been researched for nearly a century. However, recent developments in autonomy and robotics have made this issue more complex. The advent of capable autonomous underwater vehicles presents a 21st century flare to this …
-
COGNITIVE RADIO CLUSTERING ALGORITHM FOR SWARMS USING NEURAL NETWORKS
Spectral scarcity is a problem faced by many communications systems, in and outside the military. A cognitive radio network is an approach that opportunistically exploits the broadcasting spectrum. The basic concept includes classifying users into two types: primary and secondary. The primary users …
-
Evolving Efficient Foraging Behavior in Biologically-Inspired Robot Swarms
… for designing and implementing autonomous robot swarms that can function outside of the academic research laboratory. The ability of robot swarms to tolerate sensor noise, adapt to variable environments, distribute work across large teams, and identify and exploit heterogeneously-distributed …
-
Establishing temporary networks for disaster relief using UAV swarms
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-05-01
-
Tectonic earthquake swarms in the Northern Volcanic Zone, Iceland
… injection, I focus on persistent earthquake swarms that delineate a network of faults surrounding Askja volcano. Tightly constrained earthquake hypocentres, refined by cross correlation and relative relocation, reveal an intricate mesh of strike-slip faults, with fine-scaled structures …
-
A Practical Search with Voronoi Distributed Autonomous Marine Swarms
The search for underwater threats in littoral regions is a problem that has been researched for nearly a century. However, recent developments in autonomy and robotics have made this issue more complex. The advent of capable autonomous underwater vehicles presents a 21st century flare to this …
-
Anthills built to order : automating construction with artificial swarms
… motivate investigating the use of artificial swarms to automate construction or fabrication. The goal is to be able to take an unspecified number of simple robots and a supply of building material, give the system a high-level specification for any arbitrary structure desired, and have a …
-
A study of seismicity and earthquake swarms in the Central Mediterranean
… for the whole region. Occurrence of earthquake swarms has been observed in the data. This swarm activity has been observed between the beginning of 2000 and the middle of 2001. Earthquake swarms are characterized by earthquakes taking place in short temporal sequence in a narrowly restricted …
-
Cooperative localisation in underwater robotic swarms for ocean bottom seismic imaging.
… framework for large underwater robotic swarms (i.e. with hundreds of AUVs) to dynamically fuse multiple position estimates of an autonomous underwater vehicle is proposed. Simplicity, exibility and scalability are the main three advantages inherent in the proposed localisation framework, …
-
Autonomous UAV positioning using multi-agent reinforcement learning with decentralized swarms
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-05-01
-
Evaluation of a Simple Model for the Acoustics of Bat Swarms
Bats using their biosonar while flying in dense swarms may face significant bioacoustic challenges, in particular mutual sonar jamming. While possible solutions to the jamming problem have been investigated multiple times in literature, the severity of this problem has received far less attention. …
Page 1 of 8