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 66 for “"StpA"”.
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Satellite System Safety Analysis Using STPA
… constraints. System-Theoretic Process Analysis (STPA), the hazard analysis method based on STAMP, was applied to the launch and mission phases of a NASA/JAXA Global Precipitation Measurement (GPM) Core Observatory-based satellite. Exploiting the fact that nearly all satellites follow similar …
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Using STPA to inform developmental product testing
… and fielding. System-Theoretic Process Analysis (STPA), developed by Nancy Leveson at the Massachusetts Institute of Technology, is a modern hazard analysis technique that identifies unsafe scenarios in a system in order to generate requirements to eliminate or control those scenarios. It improves …
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Engineering for humans : a new extension to STPA
… like Systems-Theoretic Process Analysis (STPA). Unlike traditional methods, which are based on chain-of-events causality models and generally identify only component failures, STPA can be used to identify design flaws, component interactions, and human factors that contribute to accidents. …
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Application of CAST and STPA to railroad safety in China
… systems, like the signaling control system using STPA ((System Theoretic Process Analysis), a hazard analysis technique. In the second part of this thesis, STPA is applied to another signaling system-Communication Based Train Control (CBTC) system-which is similar to the one presented in the first …
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Tool-assisted hazard analysis and requirement generation based on STPA
… engineering. Systems Theoretic Process Analysis (STPA) is a hazard analysis technique that has been developed at MIT. It is based on systems and control theory and aims at capturing more causal factors leading to accidents, including component interactions. So far, STPA has been successfully …
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Using STPA and CAST to design for serviceability and diagnostics
OEM industries are facing increased challenges providing proactive and reactive equipment support. Increased product complexity and the fast rate of technology change make problems difficult to understand, prevent, and resolve. The cost of machine unavailability is extreme, and reliability-based …
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Extending the human controller methodology in systems- Theoretic Process Analysis (STPA)
… theory, Systems-Theoretic Process Analysis (STPA) is a hazard analysis technique that can be applied in order to derive causal factors related to human controllers within the context of the system and its design. The goal of this thesis was to extend the current human-controller analysis in …
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Application of STPA-Sec for analyzing cybersecurity of autonomous mining systems
Autonomy is seen as the next big thing in the mining industry. For mine operators there are benefits to be gained in terms of higher productivity, inherent safety, lower operational expense, and improved asset management, just to name a few. Original equipment manufacturers (OEM) and dealerships …
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Active STPA : integration of hazard analysis into a Safety Management System Framework
… The solution is the use of an active version of STPA (Systems-Theoretic Process Analysis), a hazard analysis tool based on Systems-Theoretic Accident Model and Processes (STAMP). The Active STPA uses data collected during operations, such as Flight Data Monitoring events and voluntary reporting, …
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STPA Hazard Analysis of Human Supervisory Control of Multiple Unmanned Aerials Systems
… applies System-Theoretic Process Analysis (STPA) on a model of a multi-UAS system with human-supervisory control. This hazard analysis approach handles complex software and human-machine control interactions together. This thesis details both how the hazard analysis was executed and the …
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Application of hierarchy to STPA : a human factors study on vehicle automation
… human driver. System-Theoretic Process Analysis (STPA) has been proven as an effective tool to evaluate risk by analyzing the system as a whole rather than at the component level. Notably, STPA includes, and evaluates, the operator as a part of the system. Additionally, STPA methodology provides …
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A Systems Engineering Approach to Carbon Accounting Using System Theoretic Process Analysis (STPA)
… of System Theoretic Process Analysis (STPA). We believe this study to be the first explicit SE consideration of carbon accounting, making only an entry into the resolution of accounting complexity by identifying system requirements, observing feedback and process model dependencies, and …
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The Use of System Theoretic Process Analysis (STPA) onNovel Tiltrotor Aircraft to Prevent Mode Confusion
… designs. System Theoretic Process Analysis (STPA) is a powerful new hazard analysis technique for novel tiltrotor aircraft that includes their unique safety requirements. It is a top-down system hazard analysis technique that identifies loss scenarios (N. G. Leveson and J. Thomas Mar2018). It …
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Application of STPA to the integration of multiple control systems : a case study and new approach
… analyzing multiple control systems within the STPA framework has been developed and demonstrated. The new approach meets the growing need of system engineers to analyze integrated control systems, that may or may not have been developed in a coordinated manner, and assess them for safety and …
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Safety Analysis and Design Improvement for Semi-Automatic Train Operation (STO) in High-Speed Rail Using STPA
… applies Systems-Theoretic Process Analysis (STPA). Rather than isolating hardware and function failures, STPA models the entire system as a hierarchical control structure, examining each controller’s possible unsafe actions and their feedback pathways. The analysis reveals hazard scenarios …
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Systems Theoretic Process Analysis applied to an Offshore Supply Vessel dynamic positioning system
… of Systems Theoretic Process Analysis (STPA) and the advantages that result from using this new safety analysis method compared to traditional techniques. To do this, STPA was used to analyze a case study involving Naval Offshore Supply Vessels (OSV) that incorporate software-intensive …
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Systems Theoretic Hazard Analysis (STPA) applied to the risk review of complex systems : an example from the medical device industry
… The application of STAMP hazard analysis method STPA to five sub-systems of the Paul Scherrer Institute's experimental PROSCAN proton therapy system demonstrated how STPA can augment design and risk review of existing complex systems. Two of the five human controllers active in treatment …
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A system safety analysis of tomographic treatment
… (FMEA) and System-Theoretic Process Analysis (STPA). STPA is one of the analysis techniques based on the systems-theoretic approach of system safety (STAMP) to identify what should be done to establish the design safety of medical systems. Presently, FMEA, as a risk management technique, is …
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Systems-theoretic safety analyses extended for coordination
… Model and Processes)-based analysis methods STPA (System-Theoretic Process Analysis) and CAST (Causal Analysis based on STAMP). This thesis contributes to knowledge by introducing: 1) a coordination framework for use in analysis, 2) STPA-Coordination and CAST-Coordination, which extend STPA …
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System theoretic approach for determining causal factors of quality loss in complex system design
… applies System Theoretic Process Analysis (STPA) to two case studies at Cummins, Inc. The first case study was a technology change to a subsystem in a new product development project. The intent of this case was to determine if STPA, applied broadly to safety and hazard analysis, would be …
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