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 22 for “"storage efficiency"”.
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Understanding the fault-tolerance properties of large-scale storage systems
Modern storage systems continue to increase in scale and complexity as they attempt to meet the increasing storage needs of our society. Additionally, increased requirements to comply with government regulation and consumer expectations have increased the need to make data more available and …
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Microscopic study of salt precipitation dynamics during the injection process of CO2 storage in saline aquifers
… by 2050. Carbon Capture, Utilization, and Storage (CCUS), especially geological CO₂ storage in saline aquifers, can store billions of tons of CO₂. However, salt precipitation during injection can clog pores and reduce permeability. Understanding the dynamics of this process, influenced by …
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Towards a Flexible High-efficiency Storage System for Containerized Applications
… challenges to the registry and container storage infrastructure and so far has remained a largely unexplored area. Hence, there is a need of docker image characterization that can help optimize and improve the storage systems for containerized applications. Moreover, existing deduplication …
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Absolute Frequency Data for Statistical Computing: A Comparison With Sample-Based Approaches and Guidelines for Improving Software Implementation
… the decrease in computing time and increase in storage efficiency gained by performing statistical computations using absolute frequency data. These results quantify the reduction in data storage requirements for absolute frequency data relative to using the sample form of the data, and …
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Integrated Tandem Dye Sensitized Solar Cell (DSSC)-Lithium Ion Battery
<p>Efficient renewable energy harvesting and storage are needed for present challenges related to clean environment and increasing energy demand. Different types of energy harvesting technologies such as solar, thermal and wind require excess energy to be stored in batteries, which further adds to …
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Tradeoffs between revenue enhancements and emissions reductions with energy storage-coupled photovoltaics
Energy storage has the potential to dramatically change the operation of photovoltaics by allowing for a delay between generation and use. This flexibility has the potential to impact both the revenue from generating electricity using photovoltaics and the associated emissions reductions. This …
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Scalable and Productive Data Management for High-Performance Analytics
… a faster rate than memory capacity, and the high storage footprints of data analytics workflows. This dissertation bridges these gaps by combining productive data management interfaces with application-specific optimizations of data parallelism, memory operation, and storage management. First, we …
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Direct measurement of vanadium cross-over in an operating redox flow battery
… flow battery (RFB) is an electrochemical energy storage device in which the storage medium is in the form of liquid electrolyte, which is stored in external reservoirs separate from the cell stack. The storage capacity of such systems is limited by the size of the external tanks, making the RFB …
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Numerical Investigations of Geologic CO2 Sequestration Using Physics-Based and Machine Learning Modeling Strategies
… have shown outstanding performance in CO2 storage based on their global widespread distribution and large storage capacity. Capillary trapping and mineral trapping are the two dominant mechanisms controlling the distribution, migration, and transportation of CO2 in deep brine aquifers and …
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Ceramic dielectrics for high energy density capacity application
… leading to high dielectric loss and low energy storage efficiency. Increased ratio of grain boundary resistivity to bulk grain resistivity resulted in lower breakdown strength, as larger electric field was applied on the grain boundaries as they became the most resistive part. Donor doping (e.g …
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Dielectric and Ferroelectric Properties of Lead Lanthanum Zirconate Titanate Thin Films for Capacitive Energy Storage
… energy efficient, new energy source and related storage methods are hot topic nowadays. Capacitors that supply high instant power are one of the keys in this application for both economic and functional design aspects. To lower the cost and increases the volumetric efficiency and reliability, …
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Lagrangian-based Simplification and Feature Estimation for Flow Visualization
… and large-scale flow simulation, due to its storage efficiency. However, most existing analysis and visualization techniques are for Eulerian-based (or mesh-based) flow data. There exists little work on the analysis of Lagrangian-based flow data, which motivates this dissertation work. The …
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Enabling a Sustainable Economy through Energy Systems Modeling: Solar-centric, Efficient, Integrated and Continuous Process Synthesis and Optimization
… with the calculated hydrogen-to-electricity efficiency of 65 - 70%, which is comparable to fuel cell efficiencies. The H2WP cycle uses much of the same equipment as the solar water power cycle, reducing capital outlays. The overall sun-to electricity efficiency of the hydricity process, …
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Electrochemical shock : mechanical degradation of ion-intercalation materials
… composition changes-which correlate to high storage capacity-but which also induce structural changes and stresses that can cause performance metrics such as power, achievable storage capacity, and life to degrade. "Electrochemical shock"-the electrochemical cycling-induced fracture of …
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Mechanisms In the Water Vapor Hydrolysis of Sodium Borohydride
… it a prominent near-term candidate for hydrogen storage. In addition to hydrogen, hydrated sodium metaborate (NaBO<sub>2</sub>·xH<sub>2</sub>O), is formed as a byproduct. The term x represents the excess water of hydration in the sodium borate crystal. A value of x greater than zero …
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Multimodal, longitudinal, and mega-analysis of biomedical data
… field concerned with the collection, storage, and interpretation of biomedical data that uses annotation, algorithms, and analysis to extract knowledge and insights from structured and unstructured data to be used in the development and evaluation of diagnostic tests, prognostic …
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Understanding and Optimising Carbon Disorder for High-Performance Supercapacitors
… the growing need for sustainable energy storage solutions, electrochemical double layer capacitors (EDLCs) offer an attractive combination of rapid charge-discharge capabilities with moderate energy density and exceptiona durability. Nanoporous carbons, especially activated carbons, are …
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Modeling CO₂ leakage from geological storage formation and reducing the associated risk
Large-scale geological storage of CO₂ is likely to bring CO₂ plumes into contact with existing wellbores and faults, which can act as pathways for leakage of stored CO₂ Modeling the flux of CO₂ along a leaky pathway requires transport properties along the pathway. We provide an approach based on …
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Towards ultrafast quantum processing: generation and storage of ultrafast photonic quantum states
… 3 describes a novel approach to optimizing the efficiency of photonic quantum memories in atomic ensembles possessing a three-level Lambda-type energy level structure, in an experimentally friendly fashion. Chapter 4 discusses the practical side of implementing robust quantum memory in these …
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ENERGY MICROPILES AND THERMO-ACTIVE FOUNDATIONS: EXPERIMENTAL INVESTIGATION, NUMERICAL MODELLING, AND EMERGING APPLICATIONS
… seasonal Underground Thermal Energy Storage (UTES). To address these challenges, this study employs a unified approach combining full-scale field testing and advanced numerical modelling. The experimental component of this work builds upon a dedicated full-scale test site established …
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