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 224 for “"Complex environments"”.
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Reconfigurable Wireless Communication Systems in Complex Environments
… the wireless local area networks (WLANs) in complex environments, such as underground, underwater, and indoor environments, have attracted considerable attention for both commercial and military applications. However, existing communication techniques based on electro-magnetic (EM) and …
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Transport of active particles in complex environments
… of active particles with each other or complex environments, such as porous media and chemical fields, leads to behaviour unlike that of classical equilibrium systems. The present thesis is concerned with the theoretical and experimental investigation of the transport behaviour of active …
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High-speed robot control in complex environments
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1988.
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Real-time hand gesture recognition in complex environments
Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.
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RF coupling to realistic wire systems in complex environments
… wide range of DUTs with progressively increasing complexity. Furthermore, we augment these computational modeling approaches with innovative experimental measurements to validate their predictions. To demonstrate the versatility of the developed techniques, we apply them for the first time to …
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Gaze behaviour and gait smoothness when navigating complex environments
… studies utilise controlled and stable laboratory environments. During real-world navigation individuals will encounter a range of different obstacles such as static and dynamic obstacles, aperture changes, and terrain changes. Visual feedback is crucial for obstacle navigation and can provide …
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Multi-agent, multi-objective path planning in complex environments
… missions often involves dynamic, uncertain and complex environments such as robots operating on planetary bodies, in underwater regions and in adverse weather conditions. Path planning in such conditions demands the use of control frameworks significantly different from the available methods for …
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Propagation and scattering of electromagnetic waves in complex environments
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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Visibility maximization with unmanned aerial vehicles in complex environments
… optimal control solver for validation. Complex scenarios involving multiple stationary or moving targets are considered, leading to loiter patterns or pursuit paths which negotiate planar, three-dimensional, or elevation environment models. Robustness to disturbances is addressed by …
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Towards extending coarse-grained circuit-host modeling to complex environments
… circuits are about to make the leap into complex environments. Recent advances have shown that a mechanistic, coarse-grained approach can give fundamental insight into how synthetic circuits interact with their host cells, though how this model can be applied in complex environments …
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Generating Feasible Spawn Locations for Autonomous Robot Simulations in Complex Environments
… simulations that closely represent real-world environments, the behavior of a robot in a variety of situations can be tested in a more efficient manner than performing experiments in reality. With the implementation of ROS (Robot Operating System), the software of an autonomous system can be …
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Towards targeted post-translational modification of endogenous proteins in complex environments
… covalent modification of endogenous proteins in complex environments, at any chosen surface-exposed site. Despite many advances in achieving in vivo PTMs of proteins, no technique or compound exists at this time able to perform this task. Our targeted post-translational modifiers (TPTMs) consist …
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First Principles Dynamics and Coarse-Grained Characterization of Photoisomerization in Complex Environments
These reactions occur on ultrafast timescales, to which traditional transition state theories (TSTs) do not necessarily apply. To quantify the rates of such non-TST reactions, we have applied non-linear dimensionality reduction techniques to dynamical simulation data. Such techniques permit …
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Optimization-based control and planning for highly dynamic legged locomotion in complex environments
… animals can dynamically traverse unstructured environments in an elegant and efficient manner, whether it be running down a steep hill or leaping between branches. To harness part of the animal agility to the legged robot would unlock potential applications such as disaster response and …
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Metal Oxide Reactions in Complex Environments: High Electric Fields and Pressures above Ultrahigh Vacuum
… of high electric fields and/or H2O-containing environments. The focus of this research was to understand (1) the iron oxide growth mechanism on Fe(111) at 300 K and 500 K together with the effect of high electric fields on these iron oxide films, and (2) the growth of alumina films on two faces …
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Decentralized path planning for multiple agents in complex environments using rapidly-exploring random trees
… for real-world multi-agent systems operating in complex environments. The technique developed, the Decentralized Multi-Agent Rapidly-exploring Random Tree (DMARRT) algorithm, is an extension of the CL-RRT algorithm to the multi-agent case, retaining its ability to plan quickly even with complex …
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Optimal and receding-horizon path planning algorithms for communications relay vehicles in complex environments
This thesis presents new algorithms for path planning in a communications constrained environment for teams of unmanned vehicles. This problem involves a lead vehicle that must gather information from a set of locations and relay it back to its operator. In general, these locations and the lead …
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