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 32 for “"active sensing"”.
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Active sensing in silicon-based MEMS resonators
… small size and low power consumption. FET-sensing has been demonstrated in resonant body transistors (RBTs) to reach an order of magnitude higher frequencies than possible with passive resonators due to the greater sensing eciency of FET sensing over traditional mechanisms such as …
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Bat swarming as an inspiration for multi-agent systems: predation success, active sensing, and collision avoidance
… of bats primarily use echolocation, a type of active sensing wherein bats emit ultrasonic pulses and listen to echoes, for guidance and navigation. Swarms of such bats are a unique type of multi-agent systems that feature bats's echolocation and flight behaviors. In the work of this …
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Dynamics of Multi-Agent Systems with Bio-Inspired Active and Passive Sensing
Active sensors, such as radar, lidar and sonar, emit a signal into the environment and gather information from its reflection. In contrast, passive sensors such as cameras and microphones rely on the signals emitted from the environment. In the current application of active sensors in multi-agent …
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Innovation in Piezoceramic Based Structural Health Monitoring
… investigated. For the pipeline structure, an active sensing system with distributed actuators and sensors detects the crack and monitor the crack development. For the concrete column, the cyclic crack open-close condition was determined by embedded smart aggregates using wavelet packet-based …
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A standalone capacitively coupled occupancy sensor
… The sensor electronics are implemented with active sensing electrodes and resistive and capacitive feedback modes are evaluated for performance. Optimal front end feedback, electrode spacing, and signal source amplitude are explored. The sensor achieves a detection range of 11 feet for …
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Molecular-Genetic and Behavioral Analysis of the Functionality of Patterning in the Trigeminal Neuraxis
… classes of behavior, including feeding and active vibrissal sensing, but the functional role of the patterning in these behaviors is unknown. We used two mutant animals lacking patterning in two areas of the vibrissal neuraxis to examine the functional role of patterning. We examined feeding …
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Advanced applications in wide-area impedance sensing
… lamps and laptop control signals. The active sensing electrodes with common-mode feedback are used with a spectrum analyzer and synchronous demodulator for source and material detection respectively. A setup for active source multiplexing is described and used in image reconstruction …
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Automated liquid dispensing pin for DNA microarray applications
… viscosity liquids. The new system is based on active sensing and control and it is part of a fully integrated robotic microarray system for genomic and proteomic applications. The prototype system handles water as well as thick liquids such as 100% glycerol and generates spots in a contactless …
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Demand estimation and fleet management for autonomous mobility on demand systems
… and informing a customer demand model. A new proactive demand model is presented which correlates real-time traffic data to predict customer demand on short timescales. Traditional traffic data collection approaches use pervasive fixed sensors which are costly for system-wide coverage. To address …
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An entropic framework for AUV sensor modelling
This thesis examines the general task of active sensing by defining a measure of efficiency for sensing in a particular environment. We focus on fine-scale acoustic mapping from an autonomous underwater vehicle (AUV). The constraints on imaging underwater - vehicle power, vehicle hydrodynamics, …
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Effects of Echolocation Calls on the Interactions of Bat Pairs using Transfer Entropy Analysis
… unique among these animals in that they use the active sensing mechanism of echolocation as their primary means of navigation. Due to their use of echolocation in large groups, bats run the risk of signal interference from sonar jamming. However, several species of bats have developed various …
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Quantum interference with undetected photons for sensing and imaging
… to decouple the probing and the detection of an active sensing system. The technique is based on correlated photon pairs: one photon interacts with the analyte, and the signature of the interaction is stored in its correlated counterpart. The probing photon remains undetected, while the other …
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Hybrid structures for molecular level sensing
… the push to incorporate polymeric materials as sensing/responsive nanoscale layers into next-generation miniaturized sensor applications is a natural progression. The significance and impact of this research is wide-ranging because it offers design considerations and presents results in perhaps …
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Innovative Applications of Laser Remote Sensing of Gases, Aerosols and Wind
… the research carried out at the Optical Remote Sensing Laboratory of the City College of New York has been on active sensing technologies and their different applications in atmospheric studies. This thesis builds upon and looks to further advance this field by demonstrating innovative …
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Composite Structural Health Monitoring With Piezoelectric Wafer Active Sensors
… into many industries. SHM uses a set of sensing elements permanently attached to or embedded in the structure in order to effectively monitor its structural integrity, detect and quantify damage that develops during the entirety of its life. Effective SHM will not only increase the safety …
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A spatio-temporal approach to mitigate automotive radar spoofing attacks
… an attacker compromises the physical/analog sensing system. Researchers have made some progress in mitigating such attacks on physical/analog signals of CPS, the current state of the art methodology proposed in PyCRA uses temporal random signals for physical challenge-response authentication. …
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High-resolution source imaging with bio-inspired sensing systems
… use their lateral lines to swim in dark water by sensing flows, weakly electric fish generate an electric field to detect electric distortions caused by nearby objects, and bats emit ultrasound and listen to echoes to capture insects. It is always the desire and challenge for engineers to build …
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Bytes of Evolution : essays on applying social physics lessons for management effectiveness
… Kaizen strategy while incorporating passive and active sensing data collection to analyze the easily missed social cues critical to understand and improve a socio-technical system. We test our hypothesis by applying it to three disparate systems ranging in size, complexity, and processes. In the …
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Numerical analysis of bat noseleaf dynamics and its impact on the encoding of sensory information
… dynamic principles can help improve the man-made sensing systems and help close the performance gap between active sensing in biology and in engineering.
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A Comprehensive Integrity Monitoring System for Bolted Flange Connections
… through the implementation of cutting-edge sensing technologies to thoroughly investigate the integrity of a bolted flange assembly under tensile loads, internal pressure loads and a combination of both. API 6A flanges (4-1/16”, Type 6B, 2000 psi) were selected to perform the proposed …
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