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 28 for “"System Flexibility"”.
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System Flexibility and AI Computational Enhancement for Day-Ahead Power System Operations
… of renewable energy sources (RES). The power system is a complicated network of electrical elements and requires efficient operation. The day-ahead operations use the security-constrained unit-commitment (SCUC) to provide a reliable, secure, and least-cost solution while clearing the market …
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Dynamics and Control for Vibration Isolation Design
The single-degree-of-freedom (SDOF) system is the most widely used model for vibration isolation systems. The SDOF system is a simple but worthy model because it quantifies many results of an isolation system. For instance, a SDOF model predicts that the high frequency transmissibility increases …
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Multi-objective combinatorial optimization problems in transportation and defense systems
… Optimization problems and their applications in system of systems architecting and railroad track inspection scheduling. In particular, multi-objective system of systems architecting problems with system flexibility and performance improvement funds have been investigated. Efficient solution …
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Making Digital Libraries Flexible, Scalable and Reliable: Reengineering the MARIAN System in JAVA
… are flexible, scalable, and reliable. Few such systems exist. Little is known about how to build them. This thesis addresses these problems by enhancing a prototype digital library system with the aim of making it more flexible, scalable, and reliable. We hypothesize that: 1) adding a new (user …
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Lean automation strategies for high volume, high complexity, manufacturing systems
… for high volume, high complexity manufacturing systems. In particular, we study how to reduce the footprint and cost of an automotive sealing line, while maintaining current levels of production, maintainability and safety. The key challenge researched in this thesis concerns how to reduce space …
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Towards a Digital Engineering Initialization Framework
… of Defense (DoD) as a means to improve system flexibility, counteract system obsolescence, and reduce defects in system design. However, common digital engineering definitions and frameworks have not yet converged across DoD and government engineering contractors. This thesis leverages …
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PCI Express multi-root switch reconfiguration during system operation
… datacenters must improve their resiliency, flexibility and scalability. CPU and memory virtualization are approaches that are becoming increasingly prevalent, but a major bottleneck still exists in I/O connectivity due to the physical constraints of I/O devices in a clustered system. One …
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Resilience processes employed by families from a low socio-economic background
… that emerged, which were as follows: belief system, flexibility of roles and connectedness, unsupportive environment, and self-empowerment. The results were related to existing literature and Walsh’s family resilience framework.
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Investigation of code reconfigurable fibre Bragg gratings for Optical Code Division Multiple Access (OCDMA) and Optical Packet Switching (OPS) Networks
… documents my work in the telecommunication system laboratory at the Optoelectronics Research Centre, towards the implementation of code reconfigurable OCDMA and all-optical packet switching nodes based on fibre Bragg grating (FBG) technology. My research work involves characterizing the …
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Estudo do impacto da penetração eólica no subsistema sul do Brasil
… increased substantially in the Brazilian power system and in many systems around the world. However, wind generation is variable, uncertain, low-cost and non dispatched; hence these characteristics cause impacts in power systems. In this context, this dissertation aims to understand and analyze …
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Applying the engineering systems multiple-domain matrix framework to nanosatellite space systems
… resource constrained, complex socio-technical systems that have complicated interdependencies across multiple domains. To improve understanding and reduce ambiguity, systems engineers apply a variety of modeling frameworks to model system behavior. Introduced in 2007, the Engineering Systems …
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Characterizing Naval Ship Systems Power and Energy Metrics through Modeling and Analysis
… for analyzing shipboard power and energy systems as a repeatable process to differentiate between preferred solutions within a design tradespace. The Naval design community needs a consistent method for evaluating non-functional requirements, called “ilities,” in the early design stages …
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Digital signal processing techniques for optical coherence tomography : OCT and OCT image enhancement
… (DSP) techniques were developed to improve the flexibility, functionality, and image quality of ultrahigh resolution optical coherence tomography (OCT) systems. To reduce the dependence of OCT research systems on fixed analog electronics and to improve overall system flexibility, a digital …
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Robustness Bounds For Uncertain Sampled Data Systems With Presence of Time Delays
… years. Due to many advantages like modularity, system flexibility and ease of maintenance, these networks have made their way into control systems. Today, in majority of applications, real-time networks like CAN (Controller-Area Network), Ethernet, FlexRay, ARINC, etc are used to close the …
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Application Oriented Programming and Control of Industrial Robots
… between user level commands, the motion control system, and external equipment. It should also be possible for an experienced application engineer to tailor the motion control to a specific application in a convenient way, instead of deficient utilization of the device or tricky user programming …
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Innovative energy systems and processes based on hydrogen from RES and its derivatives in the energy transition process
… production in renewable energy-powered energy systems, as a decarbonization pathway in the energy sector. Climate change mitigation and the transition to carbon-free energy systems are challenged by the inherent intermittency of renewable sources, which affects grid stability and can lead to …
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The role of wind generation in European power sector decarbonization : a general equilibrium analysis
… of a large wind penetration in power systems was conducted. In order to understand and capture the unique characteristics of wind generation different tools and methods were combined. First, an analysis of hourly wind and load profiles was completed for individual European countries …
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Speed Through Flexibility: Shortening the Acquisition Timeline of U.S. Defense Capabilities Using Flexible Systems
… procurement projects face a fundamental dilemma: systems designed and built today must serve the needs of the future, but future needs cannot be reliably forecasted. This reality drives the U.S. defense acquisition system, which creates and maintains defense capabilities in a constantly changing …
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A methodology for identifying flexible design opportunities
… dynamically change environments for engineering systems. Flexibility allows systems to continue delivering value as the uncertainty unfolds. Uncertainty can better be managed by embedding flexibility into the system. However, system designers do not have a tool or metric that identifies which …
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SPECTRALLY EFFICIENT MULTICARRIER SYSTEMS FOR FIBER-OPTIC TRANSMISSION
… study of spectrally efficient multicarrier systems for fiber-optic transmission. Multicarrier optical systems partition a high-data rate digital signal in a wavelength channel into multiple subcarriers. The data rate on each subcarrier can be sufficiently low and thus, the tolerance to …
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