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 37 for “"Operational safety"”.
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Process and operator performance analysis in process operational safety
… studies of case histories by the Health and Safety Commission in the UK and by a Honeywell led industrial consortium in the US and world wide show that human errors represent the major cause of failures. In contrast to this discovery, the majority of pervious studies on computer aided systems …
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Dynamic modeling of vertical U-tube steam generators for operational safety systems
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1982.
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Emergent Themes of Operational Safety at Urban Air Mobility at Vertiports: The Stakeholder Perspective
… conceptual, as vertiports are not currently an operational reality in the United States. The UAM vertiport is at the epicenter of the emerging advanced aviation ecosystem, representing significant operating costs of approximately $130 million per year and more than that to design, develop, and …
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Framework for Optimally Constrained Autonomous Driving Systems
… of automation is through concepts of Functional Safety (FuSa) and Operational Safety (OpSa). These terms of FuSa and OpSa are important, because ADS testing relies on both. Current recommendations for ADS testing include both OpSa and FuSa requirements. However, an examination of ADS safety …
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Assessing Effects of Object Detection Performance on Simulated Crash Outcomes for an Automated Driving System
… and react in these situations is referred to as operational safety. Unlike advanced driver assistance systems (ADAS), highly automated vehicles are required to perform the entirety of the dynamic driving task (DDT) and have a greater responsibility to achieve a high level of operational safety. …
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Directional analysis of an a-train double with damped articulation
… which has prompted many concerns related to operational safety of such vehicles. Particularly, A-train doubles, which belong to the classification of LCVs, exhibit larger magnitude oscillations in both lateral and yaw motions under directional maneuvers, which limit their directional dynamic …
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Reliability evaluation for a subsea to shore production system
… equipment is of paramount concern due to operational safety, environmental impact, and economic consequences. The costs of unplanned shutdowns and maintenance have also high economic implications. This thesis focuses on system reliability evaluation of a new offshore production concept, …
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Design and Fabrication of High Frequency Electromagnetic Coil for Magnetic Particle Imaging
… frequency electromagnetic coil which fulfills operational, safety, and geometric parameters necessary for incorporation in a custom MPI system and will allow us to simultaneously image and stimulate at specific locations within the body of a mouse. Optimization of the instrument is done through …
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Thermal Property Determination Using Optimization of One-side Known Radiant Exposure
… potential in-service failures and jeopardizing operational safety and integrity. It was previously determined that the accuracy of the equipment and methodology used for measuring elevated temperature thermal properties, particularly in predicting composite material thermal properties could not …
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On-Board Artificial Intelligence for Failure Detection and Safe Trajectory Generation
… (NAS) is becoming a primary need. However, the operational safety of these systems can be easily affected if abnormal flight conditions are present, thereby compromising the nominal bounds of design of the system's flight envelop and trajectory following. This thesis focuses on investigating …
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Método de avaliação da vida à fadiga de risers flexíveis através do monitoramento das deformações dos arames da armadura de tração
… of monitoring systems is essential to ensure operational safety and reduce design conservatism. The objective of this study was to develop a method for continuous and real-time monitoring of the top end fitting and the first intermediate connection fatigue life. The method is based on …
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Characterization and systems integration of microreactors
… electronic interfaces, thermal management, and operational safety are all considerations in microreactor packaging. A standard microchip socket from Texas Instruments was selected as the first level packaging. The sockets have mechanical attributes that lend them to, with minor reworking, …
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Wheel-rail contact force reconstruction using trackside measurements and inverse models
… is a fundamental aspect that influences operational safety, costs and efficiency. Wheel-rail contact forces, specifically vertical wheel-rail contact forces provide crucial information that can be further analysed and used by decision makers of railway operators to optimize planning and …
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The impact of air traffic management automation on the human performance of air traffic controllers in aviation law
… regional, and national legislation and operational procedures with ATCs in mind will significantly enhance ATCs' performance and trust in these advancements and increase operational safety in a progressively technology-driven environment. Therefore, the research investigated the impact …
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Machine Learning-Driven Corrosion Detection and Classification in Pipelines
… industry, with significant implications for both operational safety and economic efficiency. This research focuses on developing a robust system for detecting and classifying pipeline corrosion using advanced signal processing techniques and machine learning algorithms. The study is grounded in a …
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Systems-Theoretic Accident Model and Processes (STAMP) Applied to a U.S. Coast Guard Buoy Tender Integrated Control System
… crews. Faced with the dual needs of ensuring safety of mission execution and restoring confidence in the overall ship control system, yet faced with a limited budget, Coast Guard decision-makers elected to conduct a partial recapitalization of the system's hardware and software. This thesis …
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Design of a ground-deployed sensor for detecting the sag of Overhead Transmission Lines by measurement of the magnetic field
… to monitor the sag of OTLs, providing greater operational safety and could allow increased capacity. Keywords: sag monitoring, magnetic field sensing, overhead transmission line, magnetostatics
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Insurance spares, safety equipment and spare parts on ships
… would typically recommend that certain minimum safety equipment and spares be carried aboard any ship for the purpose of safety at sea, but do not prescribe what these should be. Each ship operator, such as this company, based on its risk profile, decides what safety equipment and spares will …
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Risk Mitigation for Low Latitude Ground-Based Augmentation System (GBAS) Precision Approach Operations
… ground-based augmentation system (GBAS) is a safety-critical system consisting of the hardware and software that augments the Global Positioning System (GPS) to provide precision approach and landing capability and is one of the navigational cornerstones of the International Civil Aviation …
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A novel engineering framework for risk assessment of Mobile Offshore Drilling Units
… of uncertain threats and hazards. Ensuring the operational safety of an MODU’s system is often a complex problem. The system faces hazards from many different sources which dynamically threaten its integrity and can cause catastrophic consequences at time of failure. The main purpose of this …
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