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 1153 for “"harsh"”.
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Microcantilever Based Potentiometric Sensors For Harsh Environment Applications
… HFET was designed and fabricated targeting harsh environment operation. The piezoresistive and piezoelectric properties of AlGaN/GaN heterostructure is highly attractive for harsh environment applications of microelectromechanical systems (MEMS) sensors. This is because it can cause large …
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Living in harsh environments: From individuals to social networks
Animals living in harsh environments are regularly faced with high-risk situations. For example, small-bodied, diurnal endotherms are challenged with high starvation risk in winter conditions when frequent storms and limited daylight restrict opportunities to forage freely. Available food may be …
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Magnetic Switches as Active Device Replacements for Harsh Environments
This thesis explores the use of the archetypical pulsed power magnetic switching devices in alternative and novel methods. The primary motivator for investigating these applications are for the purpose of simplifying electrohydraulic drill and electrocrushing designs meant for extreme environment …
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Collaborative Position Location for Wireless Networks in Harsh Environments
… in the past several years, position location in harsh propagation environments remains to be a challenging issue, due mainly to the lack of sufficient infrastructure support and the prominent phenomenon of non-line-of-sight (NLOS) signal propagation. Recently, adopting the concept of …
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Miniature Fiber-Optic Sensors for High-Temperature Harsh Environments
Measurement of physical parameters in harsh environments (high pressure, high temperature, highly corrosive, high electromagnetic interference) is often desired in a variety of areas, such as aerospace, automobile, energy, military systems, and industrial processes. Pressure and temperature are …
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Sensitivity of Feedforward Neural Networks to Harsh Computing Environments
Neural Networks have proven themselves very adept at solving a wide variety of problems, in particular they accel at image processing. However, it remains unknown how well they perform under memory errors. This thesis focuses on the robustness of neural networks under memory errors, specifically …
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Inkjet printing of resistive-type humidity sensor for harsh environments
A flexible resistive-type humidity sensor for harsh environments is successfully designed and fabricated by an inkjet printing method using a Dimatix materials printer (DMP-2800 series from Fujifilm). Construction of the sensors is based on inkjet printed interdigitated silver electrodes on a …
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Unmixing algorithms and materials for radiation detection in harsh environments
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms
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Fiber-Optics Based Pressure and Temperature Sensors for Harsh Environments
… accurate temperature and pressure profiles in harsh environments is currently in high demand in aerospace gas turbine engines and nuclear reactor simulators. Having the ability to measure both quantities continuously over a region, without thermal coupling, using a sensor with a small size …
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Novel Optical Sensors for High Temperature Measurement in Harsh Environments
… processes. Many of these processes involve harsh environments, such as high temperature, high pressure, chemical corrosion, toxicity, strong electromagnetic interference, and high-energy radiation exposure. These extreme physical conditions often prevent conventional temperature sensors from …
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The influence of negative beliefs about parenting on harsh couple interaction, harsh parenting, and child externalizing behavior: A longitudinal study from preconception to middle childhood
… among negative beliefs about parenting, harsh couple interaction, harsh parenting, and child externalizing behavior using a prospective longitudinal design. We assessed the influence of negative beliefs about parenting before becoming a parent on later family processes (e.g., harsh couple …
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Understanding the Determinants of Parental Decision-Making and Harsh Parenting Behavior
… efforts aimed at reducing the rates of harsh parenting have had limited success. A goal of this paper was to provide a novel method of studying parenting behavior; moving beyond correlational findings. Specifically, I argued that preventing harsh parenting has been a challenge, in part …
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Using Decoys as a Resiliency Mechanism in Spectrally Harsh DSA Environments
… which could be used in these spectrally harsh DSA environments. Overcoming certain types of interference in DSA environments requires unique approaches to transmitting and receiving data. This thesis discusses a decoy-based approach to mitigate conditions in which interference reacts to …
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Diode Laser Spectroscopy for Measurements of Gas Parameters in Harsh Environments
… for making self-calibrated measurements in harsh environments due to its improved sensitivity and noise rejection capability compared to direct absorption detection. But, the complexity in signal processing and higher scope of error (when certain restrictions on operating conditions are not …
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Weight-optimised steel catenary risers and their applications in harsh deepwater environment
… with a semi-submersible in deepwater and harsh environments such as Northern North Sea, which presents significant design challenges. To increase the understanding of SCR behaviour and improve the design of such systems in deepwater harsh environments, the design modelling framework of …
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Magnetic Communication in Harsh Environments Employing High-Sensitive Wideband Magnetic Field Sensors
In many transmission media other than air, current communication systems are unable to provide sufficiently fast and stable data transmission for modern applications. Examples include underground and underwater communication, as well as data transmission in process engineering, e.g., communication …
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Tactile mapping of harsh, constrained environments, with an application to oil wells
… rough environments when time is critical. The harsh environmental conditions prevent the use of range, force/torque or tactile sensors. A representative case is the mapping of oil wells. In these conditions, tactile exploration is appealing. In this work, the environment is mapped tactilely, by …
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Harsh and Philanthropic War: U.S. Success and Failure in Third Party Counterinsurgency
Before 1950, the United States intervened in large scale counterinsurgencies twice as often and intervened almost exactly as long as interventions after 1950. Yet, U.S. supported states developed before 1950 tended to survive an average thirty years after U.S. withdrawal. In contrast, U.S. …
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Race, Gender, and County Context in Support for Harsh Punishments across the U.S.
… for the death penalty and attitudes about the harshness of courts. Analyses provide some evidence that race, gender, and context interact to shape attitudes about punishment, and that the observed attitudinal variation differs according to the measure of punitiveness. Overall, this research …
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