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 76 for “"System safety"”.
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A method of active system safety
The concept of Active Safety proposed originally by Prof Schagaev [3][4][5][6] can be applied to provide additional improvement in safety of a system over its operational lifecycle by continuous analysis and assessment of the state of the system in real time of its operation and reacting …
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Satellite System Safety Analysis Using STPA
… used at NASA, are inadequate for analyzing safety at the system level. System-Theoretic Accident Model and Processes (STAMP) shifts the focus of safety from preventing failures to that of a dynamic feedback control system that enforces behavioral constraints. System-Theoretic Process …
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A system safety analysis of tomographic treatment
… industry has been advancing to provide safe and systematic medical care. However, the system of medical technologies and treatments has become more complicated year by year, which increases the risks of defects in the system. For example, the U.S. Food and Drug Administration's Center for Devices …
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Aircraft system safety : a new approach to assessing in-service performance
… and operators. The reality is that aircraft system and equipment reliability in service can fail to meet the design expectations. This thesis details the problem areas within the current analysis process, describing the procedures currently in use and showing what can go wrong. It goes on to …
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Assessment of an emerging concept in system safety : "the just culture"
… among the major drawbacks in the development of systems engineering. Investigations attribute most of these accidents to their operators' unsafe acts generally termed as "human errors". One way most organizations chose to address this issue is to define accountability and assign blame in the wake …
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Application of system safety framework in hybrid socio-technical environment of Eurasia
… economies, collectivist and individualist value systems. Rapid technological progress, coupled with shifts in political and economic structures, may produce long-lasting disturbances in a society. Such disturbances are result of the hybrid society's contradictory nature. Some of these …
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Development of a human factors hazard model for use in system safety analysis
… as well as specific characteristics unique to a system architecture and its corresponding operational behavior. This updated approach is intended to standardize, simplify, and automate the approach to modeling the likelihood of a mishap due to a human-system interaction during a hazard event. The …
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Autonomous system safety: Towards targeted and scalable approaches for validation and behaviour analysis
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-12-04 without embargo terms
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Comprehensive concept-phase system safety analysis for hybrid-electric vehicles utilizing automated driving functions
Automotive system safety (SS) analysis involving automated driving functions (ADFs) and advanced driver assistance systems (ADAS) is an active subject of research but highly proprietary. A comprehensive SS analysis and a risk informed safety case (RISC) is required for all complex hybrid-vehicle …
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A Conceptual Framework for Analysis of System Safety Interoperability of United States Navy's Combat Systems
… reality requires the optimal use of our legacy systems. The objective is to maximize the effectiveness of our operations by efficient allocation, placement and the use of our forces and war-fighting systems. The synergism drawn from the capabilities of the legacy complex systems enables today's …
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Assuring safety in high-speed magnetically levitated (maglev) systems : the need for a system safety approach
… development, magnetically levitated (maglev) systems have great potential to introduce significant changes in today's transportation networks. This thesis proposes an approach to assuring safety in high-speed maglev systems. It examines characteristic features of the systems, and analyzes the …
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Using phase space attractors to evaluate system safety constraint enforcement : case study in space shuttle mission control procedure rework
As the complexity and influence of engineering systems in modern society increases, so too does their potential to create counterintuitive and catastrophic accidents. Increasingly, the accidents encountered in these systems are defying the linearized notions of accident causality that-though …
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Product Evaluation and Process Improvement Guidelines for the Personal Protective Equipment Manufacturers based on Human Factors, NIOSH Guidelines and System Safety Principles
To analyze the system development, manufacturing practices and system evaluation procedures of representative PPES manufacturers, two companies (i.e., one "small", referred to here as "simple manufacturer (SM)", and one "large", referred here as "complex manufacturer (CM)" — in terms of workforce, …
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Developing a risk management "flight simulator" for manned space programs : a user interface to a system dynamic simulation of system safety at NASA
… help NASA managers to understand the dynamics of systemic risk, or how to evaluate the inherent risk within an organization. This thesis describes the development of a risk management simulator that will enable NASA managers to explore the dynamics of risk using an advanced system dynamics …
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A systems-theoretic security model for large scale, complex systems applied to the US air transportation system
… applied to software-intensive, socio-technical systems. Recent work by Leveson in the area of system safety engineering has led to the development of a new accident model for system safety that acknowledges the dynamic complexity of accidents. Systems-Theoretic Accident Models and Processes …
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Safety supervisory control, model-based hazard monitoring, and temporal logic: Dynamic risk-informed safety interventions and accident prevention
Accident prevention and system safety are important considerations for many industries, especially large-scale hazardous ones such as the nuclear, the chemical, and the aerospace industries. Limitations in the current tools and approaches to risk assessment and accident prevention are broadly …
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Safety considerations for operation of different classes of unmanned aerial vehicles in the National Airspace System
… the full potential benefit of UAV operations. Safety is a fundamental requirement for operation in the NAS. Maintaining and enhancing safety of UAVs is both the authority and responsibility of the Federal Aviation Administration (FAA). To inform future FAA regulations, an investigation of the …
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Systems-Theoretic Accident Model and Processes (STAMP) Applied to a U.S. Coast Guard Buoy Tender Integrated Control System
The Systems-Theoretic Accident Model (STAMP) developed by MIT's Dr. Nancy Leveson was applied in this thesis to a ship navigation control system used on U.S. Coast Guard buoy tenders. The legacy system installed on the Service's 16 sea-going buoy tenders experienced numerous incidents that had …
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Application of CAST to hospital adverse events
… to the challenges of designing and obtaining system safety, few system tools have been applied in the healthcare industry. Instead, methods such as root cause analysis (RCA) are the current accepted industry standards. The Systems Theoretic Accident Model and Processes (STAMP) is a model …
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Risk and Safety in Engineering Processes
This research project focused on the treatment of safety risks in railways. Existing methodologies for assessment and management of the safety risk on railways are mostly empirical and have been developed out of a need to satisfy the regulatory requirements and in response to a number of major …
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