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 16 of 16 for “"portable systems"”.
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Quality of service management for multimedia communications : investigations on usability of interfaces for desktop and portable systems
… negotiating and re-negotiating QoS on Desktop Systems and on Portable Devices – such as, Personal Digital Assistants (PDAs) and Mobile Phones. Conducting the usability tests for these interfaces required re-engineering of traditional usability testing processes – to improve the efficiency of …
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New frontiers in THz quantum cascade lasers
… hard brake in the race for achieving compact and portable systems, and they have confined THz QCL systems to a laboratory environment. Therefore, raising the maximum operating temperature to above that of a compact cooler (>/= 235 K for single-stage thermoelectric coolers), has been a paramount …
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Digital Controller Implementation For Disturbance Rejection In The Optical Coupling Of A Mobile Experimental Laser Tracking Systems
Laser tracking systems are an important aspect of the NASA space program, in particular for conducting research in relation to satellites and space port launch vehicles. Often, launches are conducted at remote sites which require all of the test equipment, including the laser tracking systems, to …
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Non-invasive assessment of bacterial biofilm in the middle ear using low-coherence interferometry/optical coherence tomography and acoustic measurements
… tomography (OCT) and acoustic measurements. Portable systems were constructed by integrating LCI/OCT techniques with a standard video otoscope to provide depth-resolved optical scattering properties of the middle ear. An automatic algorithm was written to classify the LCI/OCT data to detect …
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Portable low-cost magnetic resonance imaging
… could find wider applicability if lightweight, portable systems were available for siting in unconventional locations such as intensive care units (ICUs), physician offices, surgical suites, ambulances, emergency rooms, sports facilities, or rural healthcare sites. Methods: A truly portable …
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Energy efficient operating systems and software
… increasingly important with the proliferation of portable, battery-operated appliances such as laptops, Personal Digital Assistants (PDAs) and cellular phones. Numerous dedicated hardware approaches for energy mini-mization have been proposed while software energy efficiency has been relatively …
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A Fast-Response Odor Chromatographic Sniffer (FOX)
… [BPY][NTf2] at 240°C. The development of portable systems for fuel adulteration detection is demonstrated, capable of discriminating 5% kerosene adulterated diesel fuel with four seconds of chromatogram analysis. The research also presents a novel parallel column configuration using three …
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Spiking Neural Networks for Low-Power Medical Applications
… to be effectively utilized in medicine for portable or edge systems. In order to be more effective, new energy-efficient machine learning paradigms must be investigated for medical applications. In addition, smaller models with fewer parameters would be better suited to medical edge systems. …
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High energy density entrainment-based catalytic micro-combustor for portable devices in extreme environmental conditions
… catalytic micro-combustor for heating portable systems. The multichannel micro-combustor (coated with Pt/Al₂O₃ catalyst) leverages a copper-nichrome wire to enable quick and localized ohmic preheating durations (2-3 mins). Furthermore, we demonstrated low ignition temperature …
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Effect Of Operator Control Configuration On Unmanned Aerial System Trainability
Unmanned aerial systems (UAS) carry no pilot on board, yet they still require live operators to handle critical functions such as mission planning and execution. Humans also interpret the sensor information provided by these platforms. This applies to all classes of unmanned aerial vehicles …
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Adaptive Quaternion Control for a Miniature Tailsitter UAV
… of both hover and level flight, these small, portable systems can produce efficient maneuvers for enhanced surveillance and autonomy with little threat to surroundings and the system itself. Such vehicles are accompanied with control challenges due to the two different flight regimes. Problems …
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Low-voltage High-efficiency Fast-transient Voltage regulator Module
… generation data processing, communication, and portable applications. The developed advanced VRMs with these new technologies have advantages over conventional ones in power density, efficiency, transient response, reliability, and cost. The multi-module interleaved quasi-square-wave VRM …
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Novel Polyphenylquinoxaline and Polybenzimidazole Proton Exchange Membranes For High Temperature Fuel Cell Systems
… in transportation, stationary, cogeneration, and portable systems. High temperature PEMFCs operating at temperatures over 120°C have been extensively studied due to their beneficial aspects, such as faster electrode kinetics, simplified water management, increased reactant gas impurity tolerance, …
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Seizure prediction and control in epilepsy
… and thus suitable for online application even in portable systems. The capability of PE to distinguish between preictal and interictal state has been demonstrated using Receiver Operating Characteristics (ROC) analysis. Correlation analysis was used to assess dependency of PE on vigilance states. …
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RF micro-systems for 5G front-end signal processing
… components and tighter integration. Designing portable systems faces the new challenge of reducing component size while still operating at RF, where the path attenuation is low and fading is readily manageable. Satisfactory size reduction is particularly difficult for passive components that …
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Clinical translation of optical coherence tomography for the diagnosis of otitis media: validation and tracking of biofilms on the tympanic membrane and development of a novel automated classification and diagnostic platform
Otitis media (OM), an infection of the middle ear, is one of the most common reasons for children to seek medical care and receive antibiotics. While typically identified and diagnosed through the visual examination of the ear with an otoscope, this method provides limited quantitative information …