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Articles 1 - 7 of 7
Full-Text Articles in Engineering
The Utilization Of Shared Energy Storage In Energy Systems: Design, Modeling And Optimization, Rui Dai
The Utilization Of Shared Energy Storage In Energy Systems: Design, Modeling And Optimization, Rui Dai
USF Tampa Graduate Theses and Dissertations
Energy storage (ES) plays a significant role in modern smart grids and energy systems. With the advances of ES technologies, efficiently applying ES to energy systems has become the bottleneck for achieving the benefits of ES. The traditional approach of utilizing ES is the so-called distributed framework in which there is a separate ES for each individual user. Due to the inherent limits in the distributed framework such as cost inefficiency and space limitations, many studies have promoted to utilize a shared ES in energy systems to further exploit the potentials of ES. However, current studies always focus on maximizing …
Efficient Neural Architecture Search With Multiobjective Evolutionary Optimization, Maria Gabriela Baldeón Calisto
Efficient Neural Architecture Search With Multiobjective Evolutionary Optimization, Maria Gabriela Baldeón Calisto
USF Tampa Graduate Theses and Dissertations
Deep neural networks have become very successful at solving many complex tasks such as image classification, image segmentation, and speech recognition. These models are composed of multiple layers that have the capacity to learn increasingly higher-level features, without prior handcrafted specifications. However, the success of a deep neural network relies on finding the proper configuration for the task in hand. Given the vast number of hyperparameters and the massive search space, manually designing or fine-tuning deep learning architectures requires extensive knowledge, time, and computational resources.
There is a growing interest in developing methods that automatically design a neural network´s architecture, …
Using Optimization Methods For Solving Problems In Sustainable Urban Mobility And Conservation Planning, Zulqarnain Haider
Using Optimization Methods For Solving Problems In Sustainable Urban Mobility And Conservation Planning, Zulqarnain Haider
USF Tampa Graduate Theses and Dissertations
This dissertation considers three separate optimization problems related to sustainable urban and environmental systems. The first problem relates to the nightly relocation and recharging operations for Free-floating electric vehicle sharing (FFEVS) systems. Such operations involve a crew of drivers to move the shared electric vehicles (EVs), and a fleet of shuttles to transport those drivers. Mixed integer programs are used to model the relocation and recharging operations. Two approaches are devised: sequential and synchronized approaches. In the sequential approach, the movement of EVs is first decided, then the routing of shuttles and drivers is determined. In the synchronized approach, all …
Identification Of Patterns And Disruptions In Ambient Sensor Data From Private Homes, Yan Wang
Identification Of Patterns And Disruptions In Ambient Sensor Data From Private Homes, Yan Wang
USF Tampa Graduate Theses and Dissertations
The world’s population is rapidly aging and the increasing demand for home and health care services from this aging population brings unprecedented challenges to the economy and society. Ambient-assisted smart homes, residences equipped with ambient sensors to monitor the resident’s daily activities in a continuous and unobtrusive way, present great potential to manage the growing care service needs of this older population segment, and enable them to age-in-place.
Despite growing research, using ambient sensor data from private homes to monitor daily activities, health and wellness still faces significant challenges. To study ambient sensor data from private homes where annotated data …
Game Theory Approaches For Transportation Problems, Mahdi Takalloo
Game Theory Approaches For Transportation Problems, Mahdi Takalloo
USF Tampa Graduate Theses and Dissertations
This dissertation considers three separate game theory problems in transportation. In the first problem, a combinatorial auction market has been proposed for fractional ownership of autonomous vehicles. The proposed combinatorial auction has two unique features. First, the items are continuous time slots defined by bidders and second, the spatial information of bidders has been incorporated so that sharing becomes a viable plan. A conflict-based formulation of the winner determination problem has been proposed, for which an effective solution approach based on a heuristic and a maximal-clique based relaxation has been presented. The second part of the dissertation examines a pessimistic …
Some Recent Advances In Design Of Bayesian Binomial Reliability Demonstration Tests, Suiyao Chen
Some Recent Advances In Design Of Bayesian Binomial Reliability Demonstration Tests, Suiyao Chen
USF Tampa Graduate Theses and Dissertations
Reliability demonstration test (RDT) is one of important reliability assurance activities to demonstrate products' quality over time. Binomial RDT (BRDT) is one class of RDTs with appealing features, such as less failure monitoring efforts and fewer reliability modeling assumptions. Integrating with Bayesian method further allows prior knowledge incorporation for potential test sample size reduction. However, conventional designs often assume the binary failure states (i.e., success and failure) and consider a single objective of minimizing the testing cost with limited planning horizon. In this dissertation, a series of RDT designs are proposed and studied by advancing the conventional Bayesian BRDT designs …
On The Convergence Of Transportation And Power Systems In Smart And Connected Communities, Kevin A. Melendez
On The Convergence Of Transportation And Power Systems In Smart And Connected Communities, Kevin A. Melendez
USF Tampa Graduate Theses and Dissertations
Even though the total number of light-duty vehicles in the U.S. is expected to increase by 2030, total fuel consumption is expected to significantly decrease in the same timeframe. This contradictory behavior is in part explained by the increasing utilization of electricity as the primary source of energy in the transportation sector. Due to its potential to decrease dependency on fossil fuels, electric transportation has become a promising approach to alleviate the increasing environmental crisis. Passenger car markets are expected to experience a flood of new Electric vehicles (EVs) in the next few years. EVs are considered effective resources to …