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 1659 for “"harvesting"”.
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Footfall energy harvesting : footfall energy harvesting conversion mechanisms
… surrounding location of an application. Energy harvesting allows some of the costly maintenance and environmentally damaging issues of battery powered systems to be reduced.This work considers the characteristics and energy requirements of wireless sensor and actuator networks. It outlines a …
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Pearl Harvesting Autism
… search-terms for comprehensive searching, Pearl Harvesting, was tested here to determine the necessary search terms (i.e., synonym ring) for ERIC and PsycINFO databases. Once discovered and validated, a synonym ring can be copied and pasted directly into the search box of the database, providing …
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Tree-Inspired Water Harvesting
… motivated to develop novel devices for water harvesting inspired by natural trees, and to understand their collection efficiency and working principles. We accomplished that with scale-model and large-scale fog harps, floating leaves, and synthetic trees. Fluids mechanics, physics, and …
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Advanced Fog Harvesting Techniques
… as groundwater extraction, rainwater harvesting, desalination, and surface water diversion—often rely on significant infrastructure or existing water bodies. Atmospheric water harvesting (AWH) has emerged as a promising and adaptable alternative that bypasses many of these limitations. …
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Wearable energy-harvesting micro devices /
… focus of this dissertation is wearable energy-harvesting mircro devices. They are designed to harvest energy from the surrounding environment to supply power on the go for small electronic devices and sensors. We used low-cost and scalable fabrication methods that make them appropriate for mass …
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THERMOELECTRIC ENERGY HARVESTING IN DISPLAYS
… here can be the basis of a prospective energy harvesting scheme via thermoelectrics in future display-based handheld devices.
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Clamp–On Magnetic Energy Harvesting
… waste problems associated with batteries. Energy harvesting offers an exciting solution to the battery problem, enabling circuits that can power themselves on-site from available ambient energy. Magnetic energy harvesters, configured as current transformers (CTs), extract energy from the magnetic …
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Electrochemically driven mechanical energy harvesting
… analyses reveal that the ideal energy-harvesting efficiency of this device is dictated by the Poisson's ratio of the electrodes. For the thin-film-based energy harvester used in this study, the device has achieved the overall efficiency of 0.6% and a generating capacity of 15%. The …
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Interaction harvesting for document retrieval
… to document categorization called Interaction Harvesting, wherein systems establish document relationships based on organizational and curatorial cues, harvested from the mouse and click gestures of an online community. Specifically, the spatial and temporal proximity and placement of documents …
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Low Frequency Microscale Energy Harvesting
… other possible mechanisms for vibration energy harvesting (VEH). However, piezoelectric-based VEH presents a fundamental challenge at the micro scale since the resonance frequency of the structure increases as the dimension decreases. Electromagnetic induction is another voltage generation …
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Multifunctional Piezoelectric Energy Harvesting Concepts
Energy harvesting technology has the ability to create autonomous, self-powered electronic systems that do not rely on battery power for their operation. The term energy harvesting describes the process of converting ambient energy surrounding a system into useful electrical energy through the use …
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Technological innovation in forest harvesting
… innovations in industnal forestry and timber harvesting practices provides a basis for a critique of these previously proposed models and for an argument for a new model. This model, an ecological model, suggests homeostatic pressures play a major role in the innovative processes within any …
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Piezoelectric Energy Harvesting for Roadways
Energy harvesting technologies have drawn much attention as an alternative power source of roadway accessories in different scales. Piezoelectric energy harvesting consisting of PZT piezoceramic disks sealed in a protective package is developed in this work to harness the deformation energy of …
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Tiny Piezoelectric Energy-Harvesting CMOS Charger
… evaluate, design, build, test, and assess energy-harvesting CMOS battery chargers that draw and output the most power possible from ambient motion with centimeter-scale piezoelectric transducers that fit on wireless microsystems. Among the state of the art, synchronous discharge with asymmetrical …
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Design rectenna for wireless energy harvesting
There is an increasing interest in energy harvesting. The rectenna, which is a combination of a rectifier and an antenna, is a device to harvest wireless energy in the air. This thesis is concentrated on the analysis, design and measurement of compact rectennas for Wi-Fi (RF) wireless energy …
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Harvesting online ontologies for ontology evolution
Ontologies need to evolve to keep their domain representation adequate. However, the process of identifying new domain changes, and applying them to the ontology is tedious and time-consuming.<br></br><br></br> Our hypothesis is that online ontologies can provide background knowledge to decrease …
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Thermoresponsive polymer desiccants for water harvesting
… promising candidate for atmospheric water harvesting given their adaptability and scalability. However, the relative nascency of the field leaves many classes of polymers yet unexplored. This thesis details efforts into developing novel polymeric desiccants for atmospheric water harvesting …
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Performance and Fouling during Bioreactor Harvesting
… filtration has many advantages for bioreactor harvesting as the permeate could be introduced directly to the subsequent capture step, the process is easy to scale up, and fouling of the filter is limited by the cross flow. However, membrane fouling has limited its widespread use. This is …
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Thermoresponsive polymer desiccants for water harvesting
… promising candidate for atmospheric water harvesting given their adaptability and scalability. However, the relative nascency of the field leaves many classes of polymers yet unexplored. This thesis details efforts into developing novel polymeric desiccants for atmospheric water harvesting …
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UHF Energy Harvesting and Power Management
… these devices off harvested energy. UHF energy harvesting, as an enabling technology for the UHF RFID, stands out amongst other energy harvesting approaches as it does not heavily rely on the natural surrounding environment and also offers a very good wireless operating range from its radiating …
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