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Georgia Tech
1.
Mcarthur, Christopher Thomas.
Traffic light prediction using connected vehicles.
Degree: MS, Mechanical Engineering, 2019, Georgia Tech
URL: http://hdl.handle.net/1853/62694 
► Automotive companies have focused on reducing emissions of vehicles through their design. However, there is opportunities for larger emissions reductions through coaching the driver on…
(more)
▼ Automotive companies have focused on reducing emissions of vehicles through their design. However, there is opportunities for larger emissions reductions through coaching the driver on how improve fuel economy. Driver behavior has an impact on the fuel economy of the vehicle. Gains between 3 and 20 percent can be observed through altering how the driver operates the vehicle. How can the driver be coached in new ways to improve fuel economy? Many of the traditional approaches focus on having the driver using the throttle and brake pedals less aggressively. The approach in this paper implements coaching where the driver is advised based on what is happening in the environment around the vehicle. The environmental events that are being coached on is the timings of traffic lights. A prototype application was constructed that implemented all of these techniques. The system was implemented in real time using an android app. The system took information from the traffic light information files to successfully inform the driver on the environment that they were driving through. The system has been implemented through a prototype application and the results are as follows. Traffic light prediction was successful at predicting 2 cycle fixed time traffic lights. These fixed time traffic lights account for the most common traffic lights in the U.S. The traffic light prediction algorithm and work in that field is promising. The leader-follower traffic light prediction coaching shows fuel consumption reduction by as much as 34% in extreme cases. An average fuel consumption improvement of 18.7% is observed for all the drivers tested.
Advisors/Committee Members: Bras, Bert (advisor), Jiao, Roger (advisor), Simmons, Richard (advisor).
Subjects/Keywords: Driver coaching; Traffic light prediction; Autonomous vehicles
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APA (6th Edition):
Mcarthur, C. T. (2019). Traffic light prediction using connected vehicles. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/62694
Chicago Manual of Style (16th Edition):
Mcarthur, Christopher Thomas. “Traffic light prediction using connected vehicles.” 2019. Masters Thesis, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/62694.
MLA Handbook (7th Edition):
Mcarthur, Christopher Thomas. “Traffic light prediction using connected vehicles.” 2019. Web. 19 Jan 2021.
Vancouver:
Mcarthur CT. Traffic light prediction using connected vehicles. [Internet] [Masters thesis]. Georgia Tech; 2019. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/62694.
Council of Science Editors:
Mcarthur CT. Traffic light prediction using connected vehicles. [Masters Thesis]. Georgia Tech; 2019. Available from: http://hdl.handle.net/1853/62694
Georgia Tech
2.
Watson, Bryan C.
Creation of user demand surfaces to inform design decisions in novel scenarios.
Degree: MS, Mechanical Engineering, 2019, Georgia Tech
URL: http://hdl.handle.net/1853/62710
► Traditional demand estimation tools were developed for product design instead of product service system (PSS) design. PSS is a new market structure where the focus…
(more)
▼ Traditional demand estimation tools were developed for product design instead of product service system (PSS) design. PSS is a new market structure where the focus is on selling the use of a product instead of the product itself. Demand estimation faces challenges when applied to PSS design including mis-estimation, not being quantifiably repeatable, or built from evidence [3]. This thesis examines two PSS Design methodology questions. First, what is the effectiveness of spatially-derived revealed preference data in estimating distributed PSS demand? Estimating binomial distribution parameters n (user population size) and p (user population product affinity) can predict demand in new situations for distributed product service systems. Plots of binomial parameters reveal a continuous surface over the PSS area that allow more accurate prediction of relative ridership levels at new PSS locations. Secondly, this work examine how designers can compensate for situations where the PSS design environment has changed and limited user data is available to create demand estimations. This thesis hypothesis that publicly available socio-demographic and environmental variables can inform multivariable regressions that estimate the n and p Demand Surfaces outside of the boundaries previously constrained by available user data. Together, the answers to these two questions provide an initial framework to estimate Revealed Preference demand for many types of PSSs. In the examination of both questions, the proposed approaches are tested by the 2015 Chicago Bike Share System expansion.
Advisors/Committee Members: Telenko, Cassandra (advisor), Bras, Bert (committee member), Linsey, Julie (committee member).
Subjects/Keywords: Sustainability; Usage context-based design; Bike share; Data-driven design
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APA (6th Edition):
Watson, B. C. (2019). Creation of user demand surfaces to inform design decisions in novel scenarios. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/62710
Chicago Manual of Style (16th Edition):
Watson, Bryan C. “Creation of user demand surfaces to inform design decisions in novel scenarios.” 2019. Masters Thesis, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/62710.
MLA Handbook (7th Edition):
Watson, Bryan C. “Creation of user demand surfaces to inform design decisions in novel scenarios.” 2019. Web. 19 Jan 2021.
Vancouver:
Watson BC. Creation of user demand surfaces to inform design decisions in novel scenarios. [Internet] [Masters thesis]. Georgia Tech; 2019. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/62710.
Council of Science Editors:
Watson BC. Creation of user demand surfaces to inform design decisions in novel scenarios. [Masters Thesis]. Georgia Tech; 2019. Available from: http://hdl.handle.net/1853/62710
Georgia Tech
3.
Kono, Jamie E.
Consumer savings and peak reduction potential of a simulated residential microgrid with demand response and electric vehicle discharge capabilities.
Degree: MS, Mechanical Engineering, 2016, Georgia Tech
URL: http://hdl.handle.net/1853/59168
► Residential consumers have a large potential for utility peak demand reduction. As more homeowners acquire solar generation capacity and electric vehicles, the variable demand on…
(more)
▼ Residential consumers have a large potential for utility peak demand reduction. As more homeowners acquire solar generation capacity and electric vehicles, the variable demand on the grid becomes more concerning while the potential for localized load smoothing grows. This thesis models possible outcomes of a small residential microgrid implemented to observe utility-driven demand response events and to provide local power services during outage scenarios. An hourly reduced-order building model and mobile and stationary battery model are used to create a 10-home microgrid which incorporates photovoltaic (PV) arrays, electric vehicle (EV) discharge to grid, stationary batteries, and house setbacks as strategies to reduce peak consumption and provide energy services during outages.
Advisors/Committee Members: Bras, Bert (advisor), Augenbroe, Godfried (committee member), Telenko, Cassandra (committee member).
Subjects/Keywords: Microgrid; Demand response; Energy; Solar; Smartgrid; Electric vehicles; V2G; Vehicle to grid
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APA (6th Edition):
Kono, J. E. (2016). Consumer savings and peak reduction potential of a simulated residential microgrid with demand response and electric vehicle discharge capabilities. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/59168
Chicago Manual of Style (16th Edition):
Kono, Jamie E. “Consumer savings and peak reduction potential of a simulated residential microgrid with demand response and electric vehicle discharge capabilities.” 2016. Masters Thesis, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/59168.
MLA Handbook (7th Edition):
Kono, Jamie E. “Consumer savings and peak reduction potential of a simulated residential microgrid with demand response and electric vehicle discharge capabilities.” 2016. Web. 19 Jan 2021.
Vancouver:
Kono JE. Consumer savings and peak reduction potential of a simulated residential microgrid with demand response and electric vehicle discharge capabilities. [Internet] [Masters thesis]. Georgia Tech; 2016. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/59168.
Council of Science Editors:
Kono JE. Consumer savings and peak reduction potential of a simulated residential microgrid with demand response and electric vehicle discharge capabilities. [Masters Thesis]. Georgia Tech; 2016. Available from: http://hdl.handle.net/1853/59168
Georgia Tech
4.
Spinolo, Philip Luke.
Distributed parking spot detection with on-board sensors.
Degree: MS, Mechanical Engineering, 2017, Georgia Tech
URL: http://hdl.handle.net/1853/60140
► Drivers searching for parking are significant contributors to congestion in urban areas. It has been shown that informing these drivers about available parking can help…
(more)
▼ Drivers searching for parking are significant contributors to congestion in urban areas. It has been shown that informing these drivers about available parking can help alleviate some of this congestion and thus reduce overall travel time and emissions. However, informing drivers about available parking requires up-to-date knowledge of the occupancy of parking spaces in the area. For certain situations with well-controlled entries and exits, like parking garages, this is a simple process. For more distributed parking, as in open parking lots or curbside parking, the current approach is to deploy sensors at each individual parking space. A more dynamic occupancy detection system may be possible using vehicle-borne sensors to check for open spaces. As vehicle technology continues to advance, capable sensors may even be natively equipped on some vehicles and trim levels, with no need for aftermarket kits. However, when using sensors that make distance measurements to determine whether or not a space is open, a secondary system must be able to check that a detected opening is a parking space and not an intersection or a bus stop or other area that cannot be parked in. In this thesis, a method for detecting openings using a late-model vehicle’s ultrasound parallel park assist sensors and then verifying that the openings are valid parking using basic map data in OpenStreetMap is described. An overview of parking guidance systems as well as relevant sensors is also provided. The system is then tested in two stages, first for the ultrasound sensors by themselves and then for the combined detection and validation system in three different parking scenarios around Atlanta. Results show that the system is effective at identifying opening parking spaces both on the street and in parking lots, though parking lots with angled spots and GPS accuracy are both challenges for the system.
Advisors/Committee Members: Bras, Bert (advisor), Jiao, Roger (committee member), Telenko, Cassandra (committee member).
Subjects/Keywords: Parking; Parking guidance system; Ultrasound sensors; OpenStreetMap
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APA (6th Edition):
Spinolo, P. L. (2017). Distributed parking spot detection with on-board sensors. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/60140
Chicago Manual of Style (16th Edition):
Spinolo, Philip Luke. “Distributed parking spot detection with on-board sensors.” 2017. Masters Thesis, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/60140.
MLA Handbook (7th Edition):
Spinolo, Philip Luke. “Distributed parking spot detection with on-board sensors.” 2017. Web. 19 Jan 2021.
Vancouver:
Spinolo PL. Distributed parking spot detection with on-board sensors. [Internet] [Masters thesis]. Georgia Tech; 2017. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/60140.
Council of Science Editors:
Spinolo PL. Distributed parking spot detection with on-board sensors. [Masters Thesis]. Georgia Tech; 2017. Available from: http://hdl.handle.net/1853/60140
Georgia Tech
5.
Carlile, Andrew.
Water risk analyses and strategy for automotive manufacturing.
Degree: MS, Mechanical Engineering, 2015, Georgia Tech
URL: http://hdl.handle.net/1853/60399
► The availability of clean fresh water is an issue in many parts of the world. The water use by companies to perform their operations has…
(more)
▼ The availability of clean fresh water is an issue in many parts of the world. The water use by companies to perform their operations has become increasingly scrutinized as a result. However, some companies have found it advantageous to examine their water use and water risks to develop a strategy for becoming a better steward of the water resources. Some companies have found it advantageous to examine their water use and water risks to develop a strategy for becoming a better steward of water resources. This thesis examines the overall process of how water issues can be: A) accounted for and analyzed B) risks can be mitigated C) how the overall water picture can be viewed. Although the tools currently available do perform useful analyses, further standardization of metrics needs to occur before the results are truly cohesive. For example, water stress has largely been standardized, but a metric for drought risk has not. In addition, some of the results of the tools are not consistent, and further work is needed for the tools to be comprehensive. Additionally, this thesis examines the influences of direct and indirect water use and risks, such as the water use by employees and energy generation in the process of building vehicles. Understanding the indirect impacts of water use is important, and can sometimes be significantly more impactful than the direct water use. Companies or organizations that have comprehensive water strategies can eliminate risk, lower costs, and help become better stewards of the water supply on which life depends.
Advisors/Committee Members: Bras, Bert (advisor), Kurfess, Thomas (committee member), Telenko, Cassandra (committee member).
Subjects/Keywords: Water; Manufacturing; Indirect water; Water strategy; Automotive
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APA (6th Edition):
Carlile, A. (2015). Water risk analyses and strategy for automotive manufacturing. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/60399
Chicago Manual of Style (16th Edition):
Carlile, Andrew. “Water risk analyses and strategy for automotive manufacturing.” 2015. Masters Thesis, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/60399.
MLA Handbook (7th Edition):
Carlile, Andrew. “Water risk analyses and strategy for automotive manufacturing.” 2015. Web. 19 Jan 2021.
Vancouver:
Carlile A. Water risk analyses and strategy for automotive manufacturing. [Internet] [Masters thesis]. Georgia Tech; 2015. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/60399.
Council of Science Editors:
Carlile A. Water risk analyses and strategy for automotive manufacturing. [Masters Thesis]. Georgia Tech; 2015. Available from: http://hdl.handle.net/1853/60399
Georgia Tech
6.
Boston, Daniel Lewis.
Analysis of charging and driving behavior of plugin electric vehicles through telematics controller data.
Degree: MS, Mechanical Engineering, 2014, Georgia Tech
URL: http://hdl.handle.net/1853/54314
► Very little information is known about the impact electrification has on driving behavior, or how drivers charge their electrified vehicles. The recent influx of electrified…
(more)
▼ Very little information is known about the impact electrification has on driving behavior, or how drivers charge their electrified vehicles. The recent influx of electrified vehicles presents a new market of vehicles which allow drivers the option between electrical or conventional gasoline energy sources. The current battery capacity in full battery electric vehicles requires planning of routes not required of conventional vehicles, due to the limited range, extended charging times, and limited charging infrastructure. There is currently little information on how drivers react to these limitations.
A number of current models of fully electric and plug-in hybrid electric vehicles, transmit data wirelessly on key-on, key-off, and charging events. The data includes battery state of charge, distance of miles driven on gasoline and electric, energy consumed, and many other parameters associated to driving and charging behavior. In this thesis, this data was then processed and analyzed to benchmark the performance and characteristics of driving and charging patterns. Vehicles were analyzed and contrasted based on model type, geographic location, length of ownership and other variables.
This data was able to show benchmarks and parameters in aggregate for 56 weeks of electrified vehicle tracking. These parameters were compared to the EV Project, a large scale electrified vehicle study performed by Idaho National Labs, to confirm patterns of expected behavior. New parameters which were not present in the EV Project were analyzed and provided insight to charging and driving behavior not examined in any previous study on a large scale. This study provides benchmarks and conclusions on this new driving behavior, such as large scale analysis of brake regeneration performance and degradation of range anxiety. Analysis of the differences on charging and driving behavior between geographic regions and experience were examined, providing insight to how these variables affect performance and driving and charging patterns. Comparison of parameters established by the EV Project and new parameters analyzed in this report will help build a benchmark for future studies of electrified vehicles.
Advisors/Committee Members: Bras, Bert (advisor), Jiao, Roger (committee member), Guhathakurta, Subhro (committee member).
Subjects/Keywords: PEV; BEV; PHEV; Electric vehicle; Telematics; Analytics; Driving behavior
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APA (6th Edition):
Boston, D. L. (2014). Analysis of charging and driving behavior of plugin electric vehicles through telematics controller data. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/54314
Chicago Manual of Style (16th Edition):
Boston, Daniel Lewis. “Analysis of charging and driving behavior of plugin electric vehicles through telematics controller data.” 2014. Masters Thesis, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/54314.
MLA Handbook (7th Edition):
Boston, Daniel Lewis. “Analysis of charging and driving behavior of plugin electric vehicles through telematics controller data.” 2014. Web. 19 Jan 2021.
Vancouver:
Boston DL. Analysis of charging and driving behavior of plugin electric vehicles through telematics controller data. [Internet] [Masters thesis]. Georgia Tech; 2014. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/54314.
Council of Science Editors:
Boston DL. Analysis of charging and driving behavior of plugin electric vehicles through telematics controller data. [Masters Thesis]. Georgia Tech; 2014. Available from: http://hdl.handle.net/1853/54314
7.
Tee Qiao Ying, Amelia.
The design and simulation of a bio-inspired multi-agent parking system.
Degree: MS, Mechanical Engineering, 2018, Georgia Tech
URL: http://hdl.handle.net/1853/61165
► Finding parking is one of the common hassles of modern life. Drivers can considerable amounts of time and fuel looking for parking in congested urban…
(more)
▼ Finding parking is one of the common hassles of modern life. Drivers can considerable amounts of time and fuel looking for parking in congested urban centers. Therefore, it is would be very valuable to find a method that can alleviate this parking problem. However, not all solutions are cost-feasible or in some cases, even feasible. The expansion of parking infrastructure is costly and it may be more feasible to implement efficient parking practices instead. This thesis proposes a bio-inspired smart parking solution which aims to reduce the amount of time drivers take to find parking using vehicle-to-vehicle communication and the principles of swarm intelligence. It is based on how individual honeybees communicate with each other while foraging for food. In doing so, they are able to optimize the amount of nectar collected for the colony. In the same way, vehicles can communicate with each other to identify the locations in which they are more likely to find an empty parking space. Results shows that the proposed algorithm is usually more efficient than existing parking algorithms with the exception of a small group of particular circumstances.
Advisors/Committee Members: Bras, Bert (advisor), Telenko, Cassandra (committee member), Weissburg, Marc (committee member).
Subjects/Keywords: Swarm intelligence; Smart parking; Honeybees; Bio-inspired; System engineering
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APA (6th Edition):
Tee Qiao Ying, A. (2018). The design and simulation of a bio-inspired multi-agent parking system. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/61165
Chicago Manual of Style (16th Edition):
Tee Qiao Ying, Amelia. “The design and simulation of a bio-inspired multi-agent parking system.” 2018. Masters Thesis, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/61165.
MLA Handbook (7th Edition):
Tee Qiao Ying, Amelia. “The design and simulation of a bio-inspired multi-agent parking system.” 2018. Web. 19 Jan 2021.
Vancouver:
Tee Qiao Ying A. The design and simulation of a bio-inspired multi-agent parking system. [Internet] [Masters thesis]. Georgia Tech; 2018. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/61165.
Council of Science Editors:
Tee Qiao Ying A. The design and simulation of a bio-inspired multi-agent parking system. [Masters Thesis]. Georgia Tech; 2018. Available from: http://hdl.handle.net/1853/61165
Georgia Tech
8.
Spence, Reid Anderson.
Design and simulation of reused electric vehicle battery systems for home energy storage and vehicle charging.
Degree: MS, Mechanical Engineering, 2018, Georgia Tech
URL: http://hdl.handle.net/1853/61172
► At the end of vehicle life, electric vehicle batteries are still expected to contain around 70% of their original capacity. Although they are not energy…
(more)
▼ At the end of vehicle life, electric vehicle batteries are still expected to contain around 70% of their original capacity. Although they are not energy dense enough for a vehicle, they could be repurposed for stationary energy storage where size and weight are less constrained. This provides a more sustainable end of life path, as the batteries produce additional value before eventually being recycled. This thesis will investigate several concepts for an energy storage system using batteries from existing electric vehicles. Using computer based models of the concept designs, the thermal and electrical performance of the systems will be tested for various loading conditions such as back-up power, load shifting, and vehicle charging. Particular emphasis will be given to reducing cost by reusing the existing thermal management systems of the electric vehicle batteries.
Advisors/Committee Members: Bras, Bert (advisor), Paredis, Chris (committee member), Graham, Samuel (committee member).
Subjects/Keywords: Electric vehicles; Battery reuse; Battery second use; Battery second life; Home energy storage; DC fast charging; Battery thermal management; Residential energy storage.
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APA (6th Edition):
Spence, R. A. (2018). Design and simulation of reused electric vehicle battery systems for home energy storage and vehicle charging. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/61172
Chicago Manual of Style (16th Edition):
Spence, Reid Anderson. “Design and simulation of reused electric vehicle battery systems for home energy storage and vehicle charging.” 2018. Masters Thesis, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/61172.
MLA Handbook (7th Edition):
Spence, Reid Anderson. “Design and simulation of reused electric vehicle battery systems for home energy storage and vehicle charging.” 2018. Web. 19 Jan 2021.
Vancouver:
Spence RA. Design and simulation of reused electric vehicle battery systems for home energy storage and vehicle charging. [Internet] [Masters thesis]. Georgia Tech; 2018. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/61172.
Council of Science Editors:
Spence RA. Design and simulation of reused electric vehicle battery systems for home energy storage and vehicle charging. [Masters Thesis]. Georgia Tech; 2018. Available from: http://hdl.handle.net/1853/61172
Georgia Tech
9.
Migeon, Guillaume.
Evaluation of the Combination of an Electric Vehicle and a Repurposed Used Electric Vehicle Battery for a Residential Energy Storage System.
Degree: MS, Mechanical Engineering, 2019, Georgia Tech
URL: http://hdl.handle.net/1853/63492
► Electric vehicles spread exponentially as they are the vehicles of the future. Most of the time, they are parked at home. This parked car can…
(more)
▼ Electric vehicles spread exponentially as they are the vehicles of the future. Most of the time, they are parked at home. This parked car can be useful by using its battery as energy storage system for the house. Stationary home energy storage systems are currently developed using repurposed end-of-life electric vehicle batteries as well. In this thesis a model will be developed to evaluate the economical and environmental benefits from the combined use of an electric vehicle battery and a stationary home energy storage battery. This model was used to simulate optimal battery storage management for a number of residential use scenarios. It was found that significant economical as well as some greenhouse gas emission savings can be achieved depending on the use case.
Advisors/Committee Members: Bras, Bert (advisor), Fedorov , Andrei (committee member), Simmons , Richard (committee member).
Subjects/Keywords: Electric Vehicle; Home Energy Storage; Battery; Electric Vehicle Battery; Energy Storage
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APA (6th Edition):
Migeon, G. (2019). Evaluation of the Combination of an Electric Vehicle and a Repurposed Used Electric Vehicle Battery for a Residential Energy Storage System. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/63492
Chicago Manual of Style (16th Edition):
Migeon, Guillaume. “Evaluation of the Combination of an Electric Vehicle and a Repurposed Used Electric Vehicle Battery for a Residential Energy Storage System.” 2019. Masters Thesis, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/63492.
MLA Handbook (7th Edition):
Migeon, Guillaume. “Evaluation of the Combination of an Electric Vehicle and a Repurposed Used Electric Vehicle Battery for a Residential Energy Storage System.” 2019. Web. 19 Jan 2021.
Vancouver:
Migeon G. Evaluation of the Combination of an Electric Vehicle and a Repurposed Used Electric Vehicle Battery for a Residential Energy Storage System. [Internet] [Masters thesis]. Georgia Tech; 2019. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/63492.
Council of Science Editors:
Migeon G. Evaluation of the Combination of an Electric Vehicle and a Repurposed Used Electric Vehicle Battery for a Residential Energy Storage System. [Masters Thesis]. Georgia Tech; 2019. Available from: http://hdl.handle.net/1853/63492
Georgia Tech
10.
Somers, Peter.
Short horizon learning-based speed prediction for electric vehicles.
Degree: MS, Mechanical Engineering, 2020, Georgia Tech
URL: http://hdl.handle.net/1853/62752
► The automotive industry is moving more to the development of electric vehicles to meet environmental and emissions restrictions. As a result, much work is be-…
(more)
▼ The automotive industry is moving more to the development of electric vehicles to meet environmental and emissions restrictions. As a result, much work is be- ing done to optimize the efficiency of these vehicles through the use of various control methods such as model predictive control. These efforts often rely on the knowledge of future vehicle speed, however, this information is difficult to predict beyond a trivially small horizon. This work proposes including route in- formation with onboard vehicle data to make longer speed predictions. This is done through the use of a new B-spline prediction concept in conjunction with a custom temporal-spatial neural network (TSNN) structure. The B-Spline pre- diction method is demonstrated first on a simple identification task and then the TSNN is trained on test vehicle data combined with route information from HERE maps. The TSNN was successfully shown to benefit from inclusion of the route information and outperform simple existing prediction methods.
Advisors/Committee Members: Bras, Bert (advisor), Fedorov, Andrei (advisor), Sawodny, Oliver (committee member), Tarín, Cristina (committee member).
Subjects/Keywords: Speed prediction; Electric vehicles; Neural network; Machine learning
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APA (6th Edition):
Somers, P. (2020). Short horizon learning-based speed prediction for electric vehicles. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/62752
Chicago Manual of Style (16th Edition):
Somers, Peter. “Short horizon learning-based speed prediction for electric vehicles.” 2020. Masters Thesis, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/62752.
MLA Handbook (7th Edition):
Somers, Peter. “Short horizon learning-based speed prediction for electric vehicles.” 2020. Web. 19 Jan 2021.
Vancouver:
Somers P. Short horizon learning-based speed prediction for electric vehicles. [Internet] [Masters thesis]. Georgia Tech; 2020. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/62752.
Council of Science Editors:
Somers P. Short horizon learning-based speed prediction for electric vehicles. [Masters Thesis]. Georgia Tech; 2020. Available from: http://hdl.handle.net/1853/62752
Georgia Tech
11.
Ngo, Peter.
Surveying trends in analogy-inspired product innovation.
Degree: MS, Mechanical Engineering, 2014, Georgia Tech
URL: http://hdl.handle.net/1853/51891
► Analogies play a well-noted role in innovative design. Analogical reasoning is central to the practices of design-by-analogy and bio-inspired design. In both, analogies are used…
(more)
▼ Analogies play a well-noted role in innovative design. Analogical reasoning is central to the practices of design-by-analogy and bio-inspired design. In both, analogies are used to derive abstracted principles from prior examples to generate new design solutions. While numerous laboratory and classroom studies of analogy usage have been published, relatively few studies have systematically examined real-world design-by-analogy to describe its characteristics and impacts. To better teach design-by-analogy and develop support tools for engineers, specific insights are needed regarding, for example, what types of product advantages are gained through design-by-analogy and how different design process characteristics influence its outcomes. This research comprises two empirical product studies which investigate analogical inspiration in real-world design to inform the development of new analogy methods and tools. The first, an exploratory pilot study of 57 analogy-inspired products, introduces the product study method and applies several categorical variables to classify product examples. These variables measure aspects such as the composition of the design team, the driving approach to analogical reasoning, and the achieved benefits of using the analogy-inspired concept. The full scale study of 70 analogy-inspired products uses formal collection and screening methods and a refined set of classification variables to analyze examples. It adopts a cross-sectional approach, using statistical tests of association to detect relationships among variables. Combined, these surveys of real-world analogy-inspired innovation inform the development of analogy tools and provide a general account of distant analogy usage across engineering disciplines. The cross-sectional product study method demonstrated in this work introduces a valuable tool for investigating factors and impacts of real-world analogy usage in design.
Advisors/Committee Members: Linsey, Julie (advisor), Goel, Ashok K. (committee member), Bras, Bert (committee member).
Subjects/Keywords: Engineering design; Product design; Conceptual design; Analogy; Design-by-analogy; Analogy-inspired design; Bio-inspired design; Biomimicry; Biomimetics; Analogy; Technological innovations; Design; Biomimicry.
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APA (6th Edition):
Ngo, P. (2014). Surveying trends in analogy-inspired product innovation. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/51891
Chicago Manual of Style (16th Edition):
Ngo, Peter. “Surveying trends in analogy-inspired product innovation.” 2014. Masters Thesis, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/51891.
MLA Handbook (7th Edition):
Ngo, Peter. “Surveying trends in analogy-inspired product innovation.” 2014. Web. 19 Jan 2021.
Vancouver:
Ngo P. Surveying trends in analogy-inspired product innovation. [Internet] [Masters thesis]. Georgia Tech; 2014. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/51891.
Council of Science Editors:
Ngo P. Surveying trends in analogy-inspired product innovation. [Masters Thesis]. Georgia Tech; 2014. Available from: http://hdl.handle.net/1853/51891
Georgia Tech
12.
Sepulveda, Reinaldo R.
Evaluation of teleoperation system performance over a cellular network.
Degree: MS, Mechanical Engineering, 2016, Georgia Tech
URL: http://hdl.handle.net/1853/59121
► The ubiquity of cellular networks has exploded over the last half decade making internet access a given when located in an urban settings. On top…
(more)
▼ The ubiquity of cellular networks has exploded over the last half decade making internet access a given when located in an urban settings. On top of this, new technologies like 4G LTE provide higher transfer speeds than ever, permitting streaming of video and other high bandwidth services. Though cellular networks are not new, few studies have leveraged this particular communications method when studying teleoperations, due to the significant bandwidth restrictions. As a result, this study seeks to understand whether teleoperation could be implemented over regular cellular networks where the bandwidth load that each cell tower is subject to cannot be controlled by the teleoperation system. For this, a prototype system is built using a remote controlled golf cart that hosts a multimedia link between the vehicle and a control station which communicate over the internet. The system is tested by measuring teleoperation for 3 different tasks of varying degrees of complexity. The results reveal that latency can be low enough to optimally control a remote vehicle. Nevertheless, the performance greatly depends on the network conditions that can vary significantly. The results also indicated that in-situ driving outperformed remote operation.
Advisors/Committee Members: Bras, Bert (advisor), Al-Regib, Ghassan (committee member), Ames, Aaron (committee member).
Subjects/Keywords: Cellular; Teleoperation; 4G LTE
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APA (6th Edition):
Sepulveda, R. R. (2016). Evaluation of teleoperation system performance over a cellular network. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/59121
Chicago Manual of Style (16th Edition):
Sepulveda, Reinaldo R. “Evaluation of teleoperation system performance over a cellular network.” 2016. Masters Thesis, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/59121.
MLA Handbook (7th Edition):
Sepulveda, Reinaldo R. “Evaluation of teleoperation system performance over a cellular network.” 2016. Web. 19 Jan 2021.
Vancouver:
Sepulveda RR. Evaluation of teleoperation system performance over a cellular network. [Internet] [Masters thesis]. Georgia Tech; 2016. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/59121.
Council of Science Editors:
Sepulveda RR. Evaluation of teleoperation system performance over a cellular network. [Masters Thesis]. Georgia Tech; 2016. Available from: http://hdl.handle.net/1853/59121
Georgia Tech
13.
Hammoud, Nader.
Enhancement of Parking Spot Detection Using an Affordable Laser Range Sensor.
Degree: MS, Mechanical Engineering, 2015, Georgia Tech
URL: http://hdl.handle.net/1853/56225
► To gain a better understanding of the impact of parking spaces on traffic congestion, road infrastructure, time spent searching for parking and ultimately CO2 emissions,…
(more)
▼ To gain a better understanding of the impact of parking spaces on traffic congestion, road infrastructure, time spent searching for parking and ultimately CO2 emissions, several parking surveys have been undertaken. Traditionally these surveys were performed by individuals manually logging parking lot information, thus limiting spatial and temporal coverage due to high labor costs. As a result, the need for automating the data collection process for open parking spaces is paramount when one starts looking into using parking lot information in real-time applications and across a large area such as a city, state, or even an entire country. Some studies have been conducted looking into this automation process, such as using ultrasonic sensors, 2D LIDARs, vision sensors, parking lot cameras and sensors for individual parking spots in a lot. Most of these methods generated promising results, but were either expensive or not suitable for real-time processing.
This thesis describes an affordable method to detect parking spots in real-time by installing a low cost, off-the-shelf laser range sensors onto a probe car. Several algorithms will investigate the effect of having a stationary sensor and enabling a vertical motion of the sensor, with hopes of obtaining 3D images of a parking lot. The experiments are conducted for different parking configurations, in normal and adverse weather conditions. The results were compared to onboard ground truth camera recordings of the experiments. Statistical analyses were also performed to determine how effective a laser range sensor is in mapping a parking lot in one run; and how many runs were necessary to map the parking lot with a certain confidence.
Results show that the stationary laser range sensor maps parking spots with high accuracy, successfully generating a 2D and 3D layout of the parking configuration. Moreover, it has been shown that the sensor’s accuracy does not diminish for adverse weather conditions. The vertical motion of the sensor on the other hand helps with detecting some black cars, which are not as efficiently identified by the stable sensor.
Advisors/Committee Members: Bras, Bert (advisor), Choi, Seung-Kyum (committee member), Jiao, Roger (committee member).
Subjects/Keywords: Parking; Laser Sensor; Detection
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APA (6th Edition):
Hammoud, N. (2015). Enhancement of Parking Spot Detection Using an Affordable Laser Range Sensor. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/56225
Chicago Manual of Style (16th Edition):
Hammoud, Nader. “Enhancement of Parking Spot Detection Using an Affordable Laser Range Sensor.” 2015. Masters Thesis, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/56225.
MLA Handbook (7th Edition):
Hammoud, Nader. “Enhancement of Parking Spot Detection Using an Affordable Laser Range Sensor.” 2015. Web. 19 Jan 2021.
Vancouver:
Hammoud N. Enhancement of Parking Spot Detection Using an Affordable Laser Range Sensor. [Internet] [Masters thesis]. Georgia Tech; 2015. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/56225.
Council of Science Editors:
Hammoud N. Enhancement of Parking Spot Detection Using an Affordable Laser Range Sensor. [Masters Thesis]. Georgia Tech; 2015. Available from: http://hdl.handle.net/1853/56225
Georgia Tech
14.
Tomko, Megan.
Developing one’s “toolbox of design” through the lived experiences of women students: Academic makerspaces as sites for learning.
Degree: PhD, Mechanical Engineering, 2019, Georgia Tech
URL: http://hdl.handle.net/1853/63546
► Many assert the potential for makerspaces to provide competency in design and promote learning, similar to the on-the-job learning that occurs in industry, yet evidence…
(more)
▼ Many assert the potential for makerspaces to provide competency in design and promote learning, similar to the on-the-job learning that occurs in industry, yet evidence remains anecdotal. This research investigates how academic makerspaces at higher education institutions support design competencies and learning outcomes, particularly for women students. The following research questions guide this investigation: 1) what are the different types of design competencies and learning types that are reported by women in an academic makerspace, 2) how are women students’ design and learning pathways into and through makerspaces developing, and 3) what are the implications for engineering design. To answer the research questions, a multi-study research design was implemented. First, in Study One, woman makers participated in a three-part in-depth phenomenologically based interview series. The interviews were analyzed through a rigorous, iterative data analysis process that utilized open and axial coding methods to establish a typology of learning, a learning model, and the design and learning pathways. For Study Two, a targeted interview protocol on design learning was developed, executed with fifteen different women students, and analyzed in order to clarify, confirm, and expound upon the findings of Study One. Finally, higher education institutions are making large investments to install academic makerspaces. Therefore, in order to explicate implications for engineering design, Study Three employs an ancillary semi-structured qualitative interview protocol that was conducted with nine leaders of various nationwide makerspaces; the interviews were analyzed and juxtaposed with the findings of Study One and Study Two. In turn, through implementing a multi-study research design, we define types of design competencies and learning types, model design and learning pathways, and articulate the significance of makerspaces in engineering design. Thereby, we discover that critical factors are influencing a woman student’s involvement in the makerspace and that through the makerspace, women students have a notable expansion in the design competencies in their “toolbox of design.” By exclusively examining women students’ making experiences, we expose the value of academic makerspaces for developing one’s “toolbox of design.”
Advisors/Committee Members: Linsey, Julie (advisor), Newstetter, Wendy (advisor), Fu, Katherine (committee member), Bras, Bert (committee member), Nagel, Robert (committee member), Alemán, Melissa (committee member).
Subjects/Keywords: Makerspaces; Qualitative research; Engineering design; Phenomenologically based interview
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APA (6th Edition):
Tomko, M. (2019). Developing one’s “toolbox of design” through the lived experiences of women students: Academic makerspaces as sites for learning. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/63546
Chicago Manual of Style (16th Edition):
Tomko, Megan. “Developing one’s “toolbox of design” through the lived experiences of women students: Academic makerspaces as sites for learning.” 2019. Doctoral Dissertation, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/63546.
MLA Handbook (7th Edition):
Tomko, Megan. “Developing one’s “toolbox of design” through the lived experiences of women students: Academic makerspaces as sites for learning.” 2019. Web. 19 Jan 2021.
Vancouver:
Tomko M. Developing one’s “toolbox of design” through the lived experiences of women students: Academic makerspaces as sites for learning. [Internet] [Doctoral dissertation]. Georgia Tech; 2019. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/63546.
Council of Science Editors:
Tomko M. Developing one’s “toolbox of design” through the lived experiences of women students: Academic makerspaces as sites for learning. [Doctoral Dissertation]. Georgia Tech; 2019. Available from: http://hdl.handle.net/1853/63546
Georgia Tech
15.
Layton, Astrid C.
Food webs: Realizing biological inspiration for sustainable industrial resource networks.
Degree: PhD, Mechanical Engineering, 2014, Georgia Tech
URL: http://hdl.handle.net/1853/54307
► This thesis considers the problem of how to design an industrial network to reduce cost, increase efficiency, and reduce environmental burdens. A recent approach is…
(more)
▼ This thesis considers the problem of how to design an industrial network to reduce cost, increase efficiency, and reduce environmental burdens. A recent approach is further developed that uses analogies with biological food webs to guide industry design. Studying ecological food webs shows that among the metrics in use, critical quantities of interest for industry design include the internal cycling of energy, the ratio of producers to consumers, and the ratio of efficiency to redundancy in the network. Metrics that are calculated using flow based information are also introduced for use in industry, a significant step forward for bio-inspired network design. A comprehensive data set of proposed, operational, and failed eco-industrial parks is compiled for use with structural food web analyses. A data set of biological food webs is also assembled to calculate sustainable benchmark values used as goals for the industrial designs. This research an essential difficulty in bio-inspired design approaches by quantitatively analyzing components of food web design by reconstructing found relationships from science and engineering 1st principles, specifically using thermodynamic 1st law efficiency. Results from this work have the potential to provide industry-wide cost savings, increase efficiency, and reduce environmental burdens through a reduction in raw material consumption and waste disposal. The results also support the view that financial competitiveness and sustainability need not be mutually exclusive: using food web network patterns embodying both economically and environmentally desirable properties, biologically redesigned industrial networks can ease both environmental and economic burdens.
Advisors/Committee Members: Bras, Bert (advisor), Weissburg, Marc (committee member), Jiao, Roger (committee member), Linsey, Julie (committee member), Borrett, Stuart (committee member).
Subjects/Keywords: Industrial ecology; Food webs; Eco-industrial parks; Biological analogy; Ecosystem network analysis; Industrial resource networks; Sustainable design
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APA (6th Edition):
Layton, A. C. (2014). Food webs: Realizing biological inspiration for sustainable industrial resource networks. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/54307
Chicago Manual of Style (16th Edition):
Layton, Astrid C. “Food webs: Realizing biological inspiration for sustainable industrial resource networks.” 2014. Doctoral Dissertation, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/54307.
MLA Handbook (7th Edition):
Layton, Astrid C. “Food webs: Realizing biological inspiration for sustainable industrial resource networks.” 2014. Web. 19 Jan 2021.
Vancouver:
Layton AC. Food webs: Realizing biological inspiration for sustainable industrial resource networks. [Internet] [Doctoral dissertation]. Georgia Tech; 2014. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/54307.
Council of Science Editors:
Layton AC. Food webs: Realizing biological inspiration for sustainable industrial resource networks. [Doctoral Dissertation]. Georgia Tech; 2014. Available from: http://hdl.handle.net/1853/54307
16.
Branscomb, Jaclyn Marie.
Supporting multidisciplinary analysis using system architectures in SysML.
Degree: MS, Mechanical Engineering, 2012, Georgia Tech
URL: http://hdl.handle.net/1853/48989
► To develop competitive vehicles with ever increasing complexity, automotive designers need to improve their ability to explore a broad range of system architectures efficiently and…
(more)
▼ To develop competitive vehicles with ever increasing complexity, automotive designers need to improve their ability to explore a broad range of system architectures efficiently and effectively. Whereas traditional vehicle systems are based upon internal combustion (IC) engines, today’s environmentally conscious vehicle manufacturers must consider alternatives to the IC engine-only systems such as hybrid or electric systems. To help the engineers to model these multiple alternatives, it would be ideal to start from a base vehicle architecture. To design a good vehicle, it is necessary for each of these system architectures to be analyzed from a variety of attributes including performance, fuel economy, or even thermal behavior. Creating the necessary analysis models for each system architecture would be time-consuming, expensive, and could be error prone. To aid in overcoming such challenges, we have developed an approach for supporting the generation of subsystem model templates to support the integration of analysis models. The approach is based on formally modeling the system architecture in the Systems Modeling Language (OMG SysML) and then using model transformations to generate stubs for corresponding analysis models in Modelica and Simulink. In this manner, we assist designers in managing large systems with multiple analyses, ensuring that the systems remain consistent, and enabling the reuse of generic architectures through specialization and redefinition. The starting point is a reference architecture, called the Vehicle Model Architecture or VMA, in which all the key subsystems and interactions between subsystems are formally modeled. In addition, we have created a generic template that is a specialized version of the VMA. This specialized template can then be adapted by the systems engineer to represent a specific vehicle program. In addition, pre-defined, generic analysis templates can be redefined for the specific vehicle program under analysis. The SysML VMA system model is transformed through two model transformations, one that translates the physical portion of the system to Modelica, and one that transforms the logical controls portion of the system to Simulink. By automating these transformations and reusing a set of fixed templates for further specialized architectures, this approach helps to manage the complexity, reduces modeling time by enabling system model reuse. The entire approach taken in this thesis has been named the Vehicle Architecture Modeling Framework, VAMF, which includes the SysML VMA, the corresponding analysis templates, and the tools developed to support this approach. Throughout this thesis, the specific (fictitious) vehicle program “C100” and a 0-to-100 kph performance analysis test are used as examples for demonstration.
Advisors/Committee Members: Paredis, Chris (advisor), Bras, Bert (committee member), Che, Judy (committee member).
Subjects/Keywords: System architectures; Simulink; Modelica; SysML; SysML (Computer science); Simulation methods; Systems engineering; Mathematical models
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APA (6th Edition):
Branscomb, J. M. (2012). Supporting multidisciplinary analysis using system architectures in SysML. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/48989
Chicago Manual of Style (16th Edition):
Branscomb, Jaclyn Marie. “Supporting multidisciplinary analysis using system architectures in SysML.” 2012. Masters Thesis, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/48989.
MLA Handbook (7th Edition):
Branscomb, Jaclyn Marie. “Supporting multidisciplinary analysis using system architectures in SysML.” 2012. Web. 19 Jan 2021.
Vancouver:
Branscomb JM. Supporting multidisciplinary analysis using system architectures in SysML. [Internet] [Masters thesis]. Georgia Tech; 2012. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/48989.
Council of Science Editors:
Branscomb JM. Supporting multidisciplinary analysis using system architectures in SysML. [Masters Thesis]. Georgia Tech; 2012. Available from: http://hdl.handle.net/1853/48989
17.
Dillon, Krystal Renee.
A simulation-optimization method for economic efficient design of net zero energy buildings.
Degree: MS, Mechanical Engineering, 2014, Georgia Tech
URL: http://hdl.handle.net/1853/51909
► Buildings have a significant impact on energy usage and the environment. Much of the research in architectural sustainability has centered on economically advanced countries because…
(more)
▼ Buildings have a significant impact on energy usage and the environment. Much of the research in architectural sustainability has centered on economically advanced countries because they consume the most energy and have the most resources. However, sustainable architecture is important in developing countries, where the energy consumption of the building sector is increasing significantly. Currently, developing countries struggle with vaccine storage because vaccines are typically warehoused in old buildings that are poorly designed and wasteful of energy. This thesis created and studied a decision support tool that can be used to aid in the design of economically feasible Net Zero Energy vaccine warehouses for the developing world. The decision support tool used a simulation-optimization approach to combine an optimization technique with two simulation softwares in order to determine the cost-optimal design solution. To test its effectiveness, a new national vaccine storage facility located in Tunis, Tunisia was used. Nine building parameters were investigated to see which have the most significant effect on the annual energy usage and initial construction cost of the building. First, tests were conducted for two construction techniques, five different climates in the developing world, and three photovoltaic system prices to gain insight on the design space of the optimal solution. The results showed the difference between an economically efficient and economically inefficient Net Zero Energy building and the results were used to provide generalized climatic recommendations for all the building parameters studied. The final test showed the benefits of combining two optimization techniques, a design of experiments and a genetic algorithm, to form a two-step process to aid in the building design in the early stages and final stages of the design process. The proposed decision support tool can efficiently and effectively aid in the design of an economically feasible Net Zero Energy vaccine warehouse for the developing world.
Advisors/Committee Members: Colton, Jonathan S. (advisor), Bras, Bert (committee member), Paredis, Chris (committee member).
Subjects/Keywords: Building optimization; Developing countries; Genetic algorithm; Design of experiments; Sustainable architecture; Energy efficiency; Cost effectiveness; Net zero energy building; Sustainable buildings; Architecture; Buildings; Experimental design
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APA (6th Edition):
Dillon, K. R. (2014). A simulation-optimization method for economic efficient design of net zero energy buildings. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/51909
Chicago Manual of Style (16th Edition):
Dillon, Krystal Renee. “A simulation-optimization method for economic efficient design of net zero energy buildings.” 2014. Masters Thesis, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/51909.
MLA Handbook (7th Edition):
Dillon, Krystal Renee. “A simulation-optimization method for economic efficient design of net zero energy buildings.” 2014. Web. 19 Jan 2021.
Vancouver:
Dillon KR. A simulation-optimization method for economic efficient design of net zero energy buildings. [Internet] [Masters thesis]. Georgia Tech; 2014. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/51909.
Council of Science Editors:
Dillon KR. A simulation-optimization method for economic efficient design of net zero energy buildings. [Masters Thesis]. Georgia Tech; 2014. Available from: http://hdl.handle.net/1853/51909
18.
Frankland, Jennifer Hope.
A model-based feasibility study of combined heat and power systems for use in urban environments.
Degree: MS, Mechanical Engineering, 2013, Georgia Tech
URL: http://hdl.handle.net/1853/49102
► In the United States, 40% of energy use was for electricity generation in 2011, but two thirds of the energy used to produce electricity was…
(more)
▼ In the United States, 40% of energy use was for electricity generation in 2011, but two thirds of the energy used to produce electricity was lost as heat. Combined heat and power systems are an energy technology that provides electrical and thermal energy at high efficiencies by utilizing excess heat from the process of electricity generation. This technology can offer a decentralized method of energy generation for urban regions which can provide a more reliable, resilient and efficient power supply, and has a lower impact on the environment compared to certain centralized electricity generation systems. In order for the use of combined heat and power systems to become more widespread and mainstream, studies must be performed which analyze their use in various conditions and applications.
This work examines the use of a combined heat and power system with a microturbine as the prime mover in residential and commercial scenarios and analyzes the technical and economic feasibility of various system configurations. Energy models are developed for R1, R6 and 2-story office building scenarios using eQUEST, and these results give the electrical and thermal energy requirements for each building. Combined heat and power system models are then developed and presented for each scenario, and the building energy requirements and system component sizes available are considered in order to determine the optimal configurations for each system. The combined heat and power system models designed for each scenario are analyzed to find energy savings, water impacts, and emissions impacts of the system, and each model is examined for economic and environmental feasibility.
The models created provide information on the most technically and economically efficient configurations of combined heat and power systems for each scenario examined. Data on system component sizing, system efficiencies, and environmental impacts of each system were determined, as well as how these scenarios compared to the use of traditional centralized energy systems. Combined heat and power has the potential to significantly improve the resiliency, reliability and efficiency of the current energy system in the U.S., and by studying and modeling its uses we more completely understand its function in a range of scenarios and can deploy the systems in a greater number of environments and applications.
Advisors/Committee Members: Bras, Bert (advisor), Crittenden, John (committee member), Jeter, Sheldon (committee member).
Subjects/Keywords: Combined heat and power; Energy; Energy generation; Urban; Microturbine; Equest; Eplus; Cogeneration; Energy conservation; Heat recovery; Feasibility studies
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APA (6th Edition):
Frankland, J. H. (2013). A model-based feasibility study of combined heat and power systems for use in urban environments. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/49102
Chicago Manual of Style (16th Edition):
Frankland, Jennifer Hope. “A model-based feasibility study of combined heat and power systems for use in urban environments.” 2013. Masters Thesis, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/49102.
MLA Handbook (7th Edition):
Frankland, Jennifer Hope. “A model-based feasibility study of combined heat and power systems for use in urban environments.” 2013. Web. 19 Jan 2021.
Vancouver:
Frankland JH. A model-based feasibility study of combined heat and power systems for use in urban environments. [Internet] [Masters thesis]. Georgia Tech; 2013. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/49102.
Council of Science Editors:
Frankland JH. A model-based feasibility study of combined heat and power systems for use in urban environments. [Masters Thesis]. Georgia Tech; 2013. Available from: http://hdl.handle.net/1853/49102
19.
Benzoni, Nicholas A.
Water conservation facilitated by phasic feedback through smart devices.
Degree: MS, Mechanical Engineering, 2017, Georgia Tech
URL: http://hdl.handle.net/1853/59806
► On average Americans consume 99 gallons of water per person at home each day. This is more than six times the necessary amount of water…
(more)
▼ On average Americans consume 99 gallons of water per person at home each day. This is more than six times the necessary amount of water to have a comfortable life, 13.2 gallons per day. This excess usage results in avoidable stress on water reservoirs, and material and energy resources for the processing and delivery of water. Despite much technological advancement, such as low-flow aerators, household water consumption remains much higher than necessary. The underlying problem is human behavior. To change behavior, researchers have developed and studied a range of intervention systems aimed at creating water conservation. They have achieved savings from 0-28%. These studies were limited by small sample sizes, short deployments, and providing only basic usage feedback. This thesis describes the development and pilot testing of a prototype phasic usage feedback device aimed at creating water conservation at the kitchen sink.
Advisors/Committee Members: Telenko, Cassandra (advisor), Bras, Bert (committee member), Catrambone, Richard (committee member).
Subjects/Keywords: Sustainability; Conservation; Feedback; Smart device; Device; Iot; Water; Resource; Environmental; Phasic; Transtheoretic
…Google
scholar, Georgia Tech library system, and Wiley Online -- leading to many journal and…
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APA (6th Edition):
Benzoni, N. A. (2017). Water conservation facilitated by phasic feedback through smart devices. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/59806
Chicago Manual of Style (16th Edition):
Benzoni, Nicholas A. “Water conservation facilitated by phasic feedback through smart devices.” 2017. Masters Thesis, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/59806.
MLA Handbook (7th Edition):
Benzoni, Nicholas A. “Water conservation facilitated by phasic feedback through smart devices.” 2017. Web. 19 Jan 2021.
Vancouver:
Benzoni NA. Water conservation facilitated by phasic feedback through smart devices. [Internet] [Masters thesis]. Georgia Tech; 2017. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/59806.
Council of Science Editors:
Benzoni NA. Water conservation facilitated by phasic feedback through smart devices. [Masters Thesis]. Georgia Tech; 2017. Available from: http://hdl.handle.net/1853/59806
20.
Malone, Stephen.
A systems-based approach for sustainable steel manufacturing.
Degree: MS, Mechanical Engineering, 2017, Georgia Tech
URL: http://hdl.handle.net/1853/58739
► China is by far the largest manufacturer of crude steel, producing over half of worldwide demand. Due to this, improvements to the Chinese steel industry…
(more)
▼ China is by far the largest manufacturer of crude steel, producing over half of worldwide demand. Due to this, improvements to the Chinese steel industry can have far-ranging international benefits by decreasing its environmental impact. The focus of this thesis is on developing innovative systems-based solutions at different scales to help alleviate this burden. This is first accomplished by developing system-based technology solutions at the plant scale to increase water, energy and material efficiencies. From historical configurations until the present day, the steel manufacturing process structure and flows are modeled from an ecological perspective. Next, at a higher level, the focus transitions to transforming Chinese steel manufacturing plants into eco-industrial parks by means of industrial symbiosis with other companies and assessing the associated ecological metrics. In addition, improvement of these eco-industrial parks is investigated using functional roles found throughout nature but often absent within industrial networks. The use of constructed wetlands and pyrolysis are investigated to help alleviate the burden on the water network within steel manufacturing and increase material efficiencies. This multi-scale approach in the pursuit of sustainable steel manufacturing is unique in that it has not been attempted before and is not well understood.
Advisors/Committee Members: Bras, Bert (advisor), Weissburg, Marc (committee member), Linsey, Julie (committee member).
Subjects/Keywords: Industrial ecology; Industrial symbiosis; Steel; Manufacturing; Sustainability; Modeling
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APA (6th Edition):
Malone, S. (2017). A systems-based approach for sustainable steel manufacturing. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/58739
Chicago Manual of Style (16th Edition):
Malone, Stephen. “A systems-based approach for sustainable steel manufacturing.” 2017. Masters Thesis, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/58739.
MLA Handbook (7th Edition):
Malone, Stephen. “A systems-based approach for sustainable steel manufacturing.” 2017. Web. 19 Jan 2021.
Vancouver:
Malone S. A systems-based approach for sustainable steel manufacturing. [Internet] [Masters thesis]. Georgia Tech; 2017. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/58739.
Council of Science Editors:
Malone S. A systems-based approach for sustainable steel manufacturing. [Masters Thesis]. Georgia Tech; 2017. Available from: http://hdl.handle.net/1853/58739
21.
Doshi, Siddharth.
Designing a multi-modal traveler information platform for urban transportation.
Degree: MS, Mechanical Engineering, 2010, Georgia Tech
URL: http://hdl.handle.net/1853/37167
► Urban transportation networks are inefficient due to sub-optimal use by travelers. One approach to counter the increase in urban transportation demand is to provide better…
(more)
▼ Urban transportation networks are inefficient due to sub-optimal use by travelers. One approach to counter the increase in urban transportation demand is to provide better information to travelers, which would allow them to make better use of the network.
Existing traveler information systems do this to a certain extent, but are limited by the data available and the scope of their implementation. These systems are vertically integrated and closed so that using any external elements for analysis, user interfacing etc. is difficult.
The effects of such traveler information systems are reviewed via a comparative analysis of case studies available in the literature. It is found that information availability has a definite positive effect, but the social and environmental benefits are difficult to quantify. It is also seen that combining data by integrating systems can lead to additional uses for the same data and result on better quality of service and information.
In this thesis, a regional platform for multi-modal traveler information is proposed that would support the development of traveler information systems. The architecture incorporates a central processing and storage module, which acts as an information clearinghouse and supports receiving, managing and sending data to and from multiple sources and interfaces. This setup allows sharing of data for analysis or application development, but with access control. The components are loosely coupled to minimize inter-dependencies. Due to this, the source, analysis, user interface and storage components can be developed independently of each other.
To better develop the requirements and understand the challenges of the proposed concept, a limited implementation of the system is designed for the midtown Atlanta region, incorporating multiple data sources and user interfaces. The individual elements of the system are described in detail as is the testing and evaluation of the system.
Advisors/Committee Members: Bras, Bert (Committee Chair), French, Steven (Committee Member), Jiao, Roger (Committee Member).
Subjects/Keywords: User interface; Application; API; Database; Tracking; Urban transportation; Traveler information; GPS; Urban transportation; Intelligent transportation systems; Advanced traveler information systems; Vehicle-infrastructure integration
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APA (6th Edition):
Doshi, S. (2010). Designing a multi-modal traveler information platform for urban transportation. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/37167
Chicago Manual of Style (16th Edition):
Doshi, Siddharth. “Designing a multi-modal traveler information platform for urban transportation.” 2010. Masters Thesis, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/37167.
MLA Handbook (7th Edition):
Doshi, Siddharth. “Designing a multi-modal traveler information platform for urban transportation.” 2010. Web. 19 Jan 2021.
Vancouver:
Doshi S. Designing a multi-modal traveler information platform for urban transportation. [Internet] [Masters thesis]. Georgia Tech; 2010. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/37167.
Council of Science Editors:
Doshi S. Designing a multi-modal traveler information platform for urban transportation. [Masters Thesis]. Georgia Tech; 2010. Available from: http://hdl.handle.net/1853/37167
22.
Rattay, Jakob S.
Evaluation of the impact of repurposing used electric vehicle batteries for residential energy storage systems.
Degree: MS, Mechanical Engineering, 2018, Georgia Tech
URL: http://hdl.handle.net/1853/61647
► Electric vehicles could provide a solution to several major challenges caused by the transportation sector. However, the cost of electric vehicles is a substantial barrier…
(more)
▼ Electric vehicles could provide a solution to several major challenges caused by the transportation sector. However, the cost of electric vehicles is a substantial barrier to overcome. As batteries make up a significant part of this cost, one solution is to create a resale value for the used battery. At the end of its life in the electric vehicle, it is expected that the battery will retain 80% of its originally manufactured capacity. This reduced capacity renders the battery unfit for automobile applications but still provides value for stationary applications such as home energy storage. Previous studies have suggested the economic benefit of home energy storage is small, but these studies also lack diversity in experimental scenarios. Therefore, this thesis proposes a varied boundary condition approach to model the environmental and economic effects of home energy storage battery reuse from electric vehicles and the additive effects of different control schemes. Some of the variations of boundary conditions in this study involve scenarios such as including solar power or the presence of an electric vehicle. Some of the varying control schemes involve repurposing home energy storage to also provide the capabilities of fast-charging electric vehicles or analyzing the self-sufficiency that this home energy storage system provides. The results from this analysis suggest the battery reuse benefits are heavily dependent on the varying scenarios and control schemes, but overall the results agree with past studies in regard to the economic benefits of home energy storage not outweighing the associated costs. However, the results also demonstrate that it is possible to significantly increase the household’s self-sufficiency and that from an economic and environmental perspective, it is far better to reuse electric vehicle batteries in lieu of new batteries for home energy storage solutions.
Advisors/Committee Members: Bras, Bert (advisor), Augenbroe, Godfried (committee member), Sawodny, Oliver (committee member), Tarín, Cristina (committee member).
Subjects/Keywords: Electric vehicle; EV; Reuse; Second use; Home energy storage (HES); Energy storage systems (ESS); Control; Economic feasibility; Ecological impact; Li-ion battery; Model
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APA (6th Edition):
Rattay, J. S. (2018). Evaluation of the impact of repurposing used electric vehicle batteries for residential energy storage systems. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/61647
Chicago Manual of Style (16th Edition):
Rattay, Jakob S. “Evaluation of the impact of repurposing used electric vehicle batteries for residential energy storage systems.” 2018. Masters Thesis, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/61647.
MLA Handbook (7th Edition):
Rattay, Jakob S. “Evaluation of the impact of repurposing used electric vehicle batteries for residential energy storage systems.” 2018. Web. 19 Jan 2021.
Vancouver:
Rattay JS. Evaluation of the impact of repurposing used electric vehicle batteries for residential energy storage systems. [Internet] [Masters thesis]. Georgia Tech; 2018. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/61647.
Council of Science Editors:
Rattay JS. Evaluation of the impact of repurposing used electric vehicle batteries for residential energy storage systems. [Masters Thesis]. Georgia Tech; 2018. Available from: http://hdl.handle.net/1853/61647
23.
Semidey, Stephen Andrew.
Thermal design and optimization of high torque density electric machines.
Degree: PhD, Mechanical Engineering, 2012, Georgia Tech
URL: http://hdl.handle.net/1853/48967
► The overarching goal of this work is to address the design of next-generation, high torque density electrical machines through numerical optimization using an integrated thermal-electromagnetic…
(more)
▼ The overarching goal of this work is to address the design of next-generation, high torque density electrical machines through numerical optimization using an integrated thermal-electromagnetic design tool that accounts for advanced cooling technology. A parametric thermal model of electric machines was constructed and implemented using a finite difference approach incorporating an automated, self segmenting mesh generation. A novel advanced cooling technology is proposed to improve thermal transport in the machine by removing heat directly from the windings via heat exchangers located between the winding bundles. Direct winding heat exchange (DWHX) requires high convective transport and low pressure loss. The heat transfer to pressure drop tradeoff was addressed by developing empirically derived Nusselt number and friction factor correlations for micro-hydrofoil enhanced meso-channels. The parametric thermal model, advanced cooling technique, Nusselt number and friction factor correlations were combined with a parametric electromagnetic model for electric machines. The integrated thermal-electromagnetic model was then used in conjunction with particle swarm optimization to determine optimal conceptual designs. The Nusselt number correlation achieves an R² value of 0.99 with 95% of the data falling within ± 2.5% similarly the friction factor correlation achieves an R² value of 0.92 with 95% of the data falling within ± 10.2%. The integrated thermal-electromagnetic design tool, incorporating DWHX, generated an optimized 20 kW permanent magnet electric machine design achieving a torque density of 23.2 N-m/L based on total system volume.
Advisors/Committee Members: Mayor, J. Rhett (advisor), Bras, Bert (committee member), Harley, Ronald (committee member), Jeter, Sheldon (committee member), Joshi, Yogendra (committee member).
Subjects/Keywords: Nusselt correlation; Finite difference; Micro-hydrofoil arrays; Thermal modeling; Friction factor correlation; Electric machines; Non-linear global optimization; Mass transfer; Cooling
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APA (6th Edition):
Semidey, S. A. (2012). Thermal design and optimization of high torque density electric machines. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/48967
Chicago Manual of Style (16th Edition):
Semidey, Stephen Andrew. “Thermal design and optimization of high torque density electric machines.” 2012. Doctoral Dissertation, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/48967.
MLA Handbook (7th Edition):
Semidey, Stephen Andrew. “Thermal design and optimization of high torque density electric machines.” 2012. Web. 19 Jan 2021.
Vancouver:
Semidey SA. Thermal design and optimization of high torque density electric machines. [Internet] [Doctoral dissertation]. Georgia Tech; 2012. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/48967.
Council of Science Editors:
Semidey SA. Thermal design and optimization of high torque density electric machines. [Doctoral Dissertation]. Georgia Tech; 2012. Available from: http://hdl.handle.net/1853/48967
24.
Carneiro, Gustavo Antonio.
Integrated assessment of buildings and distributed energy resources (DER) at the neighborhood scale.
Degree: PhD, Architecture, 2017, Georgia Tech
URL: http://hdl.handle.net/1853/59272
► In urban regions, traditionally a main electric grid fed by centralized power plants serves the growing energy demand of residential and commercial buildings. However, the…
(more)
▼ In urban regions, traditionally a main electric grid fed by centralized power plants serves the growing energy demand of residential and commercial buildings. However, the advent of new technologies, such as distributed renewable energy generation, local energy storage, and smart controls, is transforming the way buildings interact and transact with the electric grid. When operating in coordination, several buildings or households can leverage their aggregate potential and use their energy flexibility and distributed resources to improve the operation of both the main grid and the pool of integrated and intelligent buildings. Much attention has been drawn to the potential benefits of these types of integration, especially the capabilities they can provide in terms of aggregate demand management and local power resilience. Nevertheless, building energy modeling at the urban level has not yet reached the necessary computational manageability and simulation robustness to assess these novel scenarios. To address this hiatus, the current thesis presents a computer-aided energy simulation method to model the integration of multiple buildings and distributed energy resources (DER) at the neighborhood scale. The proposed methodology uses a reduced order simulation approach to achieve a reliable and tractable dynamic modeling framework that can manage multiple transacting building energy models and DER models in a single platform.
To test the modeling approach, this study first carries out a virtual experiment of a small community in Miami, FL, where it is possible to compare the outcomes of community energy consumption from our reduced order model to the outcomes from a higher order simulation approach. When using the community energy model to evaluate the performance of different DER options for community peak load shaving, we can observe that the influence of the model order reduction reveals to be very minor when compared to other uncertainties related to scenario variability and, especially, systems’ efficiencies.
Secondly, we apply the reduced order modeling approach to an existing residential community in Rancho Cordova (Sacramento County), CA, with solar energy generation and battery energy storage. With this case study, we demonstrate the viability of our approach to construct and calibrate a reduced order model of fifteen households based only on limited and general data related to energy performance of the entire neighborhood. The developed reduced order model is used to evaluate the performance of different energy storage arrangements for reducing the occurrence of community super peak loads. In this virtual experiment, we can demonstrate how the model allows for uncertainty analyses over the influence of input parameters, as well as for more sophisticated optimization studies, including stochastic optimization, in a timely and transparent fashion.
Finally, the proposed reduced order simulation approach is used to construct and test relevant energy performance measures at the neighborhood scale.…
Advisors/Committee Members: Augenbroe, Godfried (advisor), Bras, Bert (committee member), Grijalva, Santiago Carlos (committee member), Brown, Jason (committee member), Jackson, Roderick (committee member).
Subjects/Keywords: Community energy model; Distributed energy resources; Energy resilience; Energy flexibility
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APA (6th Edition):
Carneiro, G. A. (2017). Integrated assessment of buildings and distributed energy resources (DER) at the neighborhood scale. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/59272
Chicago Manual of Style (16th Edition):
Carneiro, Gustavo Antonio. “Integrated assessment of buildings and distributed energy resources (DER) at the neighborhood scale.” 2017. Doctoral Dissertation, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/59272.
MLA Handbook (7th Edition):
Carneiro, Gustavo Antonio. “Integrated assessment of buildings and distributed energy resources (DER) at the neighborhood scale.” 2017. Web. 19 Jan 2021.
Vancouver:
Carneiro GA. Integrated assessment of buildings and distributed energy resources (DER) at the neighborhood scale. [Internet] [Doctoral dissertation]. Georgia Tech; 2017. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/59272.
Council of Science Editors:
Carneiro GA. Integrated assessment of buildings and distributed energy resources (DER) at the neighborhood scale. [Doctoral Dissertation]. Georgia Tech; 2017. Available from: http://hdl.handle.net/1853/59272
25.
Thompson, Stephanie C.
Rational design theory: a decision-based foundation for studying design methods.
Degree: PhD, Mechanical Engineering, 2011, Georgia Tech
URL: http://hdl.handle.net/1853/39490
► While design theories provide a foundation for representing and reasoning about design methods, existing design theories do not explicitly include uncertainty considerations or recognize tradeoffs…
(more)
▼ While design theories provide a foundation for representing and reasoning about design methods, existing design theories do not explicitly include uncertainty considerations or recognize tradeoffs between the design artifact and the design process. These limitations prevent the existing theories from adequately describing and explaining observed or proposed design methods.
In this thesis, Rational Design Theory is introduced as a normative theoretical framework for evaluating prescriptive design methods. This new theory is based on a two-level perspective of design decisions in which the interactions between the artifact and the design process decisions are considered. Rational Design Theory consists of normative decision theory applied to design process decisions, and is complemented by a decision-theory-inspired conceptual model of design.
The application of decision analysis to design process decisions provides a structured framework for the qualitative and quantitative evaluation of design methods. The qualitative evaluation capabilities are demonstrated in a review of the systematic design method of Pahl and Beitz. The quantitative evaluation capabilities are demonstrated in two example problems. In these two quantitative examples, Value of Information analysis is investigated as a strategy for deciding when to perform an analysis to gather additional information in support of a choice between two design concepts. Both quantitative examples demonstrate that Value of Information achieves very good results when compared to a more comprehensive decision analysis that allows for a sequence of analyses to be performed.
Advisors/Committee Members: Paredis, Chris (Committee Chair), Ashuri, Baabak (Committee Member), Bras, Bert (Committee Member), McGinnis, Leon (Committee Member), Rosen, David (Committee Member).
Subjects/Keywords: Design theory; Design methodology; Decision-based design; Utility theory; Design and technology; Decision making; Decision making Mathematical models
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APA (6th Edition):
Thompson, S. C. (2011). Rational design theory: a decision-based foundation for studying design methods. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/39490
Chicago Manual of Style (16th Edition):
Thompson, Stephanie C. “Rational design theory: a decision-based foundation for studying design methods.” 2011. Doctoral Dissertation, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/39490.
MLA Handbook (7th Edition):
Thompson, Stephanie C. “Rational design theory: a decision-based foundation for studying design methods.” 2011. Web. 19 Jan 2021.
Vancouver:
Thompson SC. Rational design theory: a decision-based foundation for studying design methods. [Internet] [Doctoral dissertation]. Georgia Tech; 2011. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/39490.
Council of Science Editors:
Thompson SC. Rational design theory: a decision-based foundation for studying design methods. [Doctoral Dissertation]. Georgia Tech; 2011. Available from: http://hdl.handle.net/1853/39490
26.
Ai, Ning.
Challenges of sustainable urban planning: the case of municipal solid waste management.
Degree: PhD, City Planning, 2011, Georgia Tech
URL: http://hdl.handle.net/1853/44926
► This study aims to demonstrate the critical role of waste management in urban sustainability, promote planners' contribution to proactive and efficient waste management, and facilitate…
(more)
▼ This study aims to demonstrate the critical role of waste management in urban sustainability, promote planners' contribution to proactive and efficient waste management, and facilitate the integration of waste management into mainstream sustainability planning.
With anticipated increases in population and associated waste generation, timely and effective waste management highlights one of the most critical challenges of sustainable development, which calls for meeting "the needs of the present without compromising the ability of future generations to meet their own needs" (WCED, 1987). Waste management in urban areas plays a particularly important role, given that waste generated from urban areas are often exported out of the region for processing and treatment, and the impacts of waste disposal activities may pass on to the other jurisdictions, and even to the next generations. An urban system cannot be sustainable if it requires more resources than it can produce on its own and generates more wastes than the environment can assimilate.
The current waste management practice, which focuses on short-term impacts and end-of-pipe solutions, is reactive in nature and inadequate to promote sustainability within urban systems, across jurisdictions, and across generations. Through material flows in and out of urban systems, many potential opportunities exist to reduce waste generation and to minimize the negative impacts on the environment, the economy, and the society. City planners' involvement in waste management, however, has been largely limited to siting waste management facilities.
Linking waste management with three important lenses in planning-land use, economic development, and environmental planning, this study investigates the impacts of urban growth on waste management activities, the need of transforming the reactive nature of current waste management, and the challenges and opportunities that planners should address to promote urban systems' self-reliance of material and waste management needs.
This study includes three empirical analyses to complement theoretical discussions. First, it connects waste statistics with demographic data, geographic characteristics, and policy instruments at the county level to examine whether waste volume can be decoupled from urban population growth. Second, it examines the life cycle costs of different waste management options and develops a simulation study to seek cost-effective strategies for long-term waste management. Third, it compiles evidence of geographic-specific characteristics related to waste management and demonstrates why waste management policies cannot be one-size-fit-all.
This study finds that, with successful implementation of strategic policy design, waste generation and its associated impacts can be decoupled from population and urban growth. Good lessons about waste reduction programs can be learned from different communities. Meanwhile, this study also reveals various challenges facing communities with heterogeneous characteristics, such as…
Advisors/Committee Members: Leigh, Nancey Green (Committee Chair), French, Steven P (Committee Co-Chair), Bras, Bert (Committee Member), Stiftel, Bruce (Committee Member), Yang, Jiawen (Committee Member).
Subjects/Keywords: Economic development; Environmental planning; Waste management; Urban sustainability; Sustainability; Sustainable development; Sustainable urban development; City planning; Refuse and refuse disposal
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APA (6th Edition):
Ai, N. (2011). Challenges of sustainable urban planning: the case of municipal solid waste management. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/44926
Chicago Manual of Style (16th Edition):
Ai, Ning. “Challenges of sustainable urban planning: the case of municipal solid waste management.” 2011. Doctoral Dissertation, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/44926.
MLA Handbook (7th Edition):
Ai, Ning. “Challenges of sustainable urban planning: the case of municipal solid waste management.” 2011. Web. 19 Jan 2021.
Vancouver:
Ai N. Challenges of sustainable urban planning: the case of municipal solid waste management. [Internet] [Doctoral dissertation]. Georgia Tech; 2011. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/44926.
Council of Science Editors:
Ai N. Challenges of sustainable urban planning: the case of municipal solid waste management. [Doctoral Dissertation]. Georgia Tech; 2011. Available from: http://hdl.handle.net/1853/44926
27.
Lee, Benjamin David.
A pragmatic value-driven approach to design with applications to energy-conscious buildings.
Degree: PhD, Mechanical Engineering, 2014, Georgia Tech
URL: http://hdl.handle.net/1853/53094
► Within the design community, a growing number of researchers have shown interest in extending the value context to include design, such that designers focus on…
(more)
▼ Within the design community, a growing number of researchers have shown interest in extending the value context to include design, such that designers focus on maximizing the 'value' of the product or service, rather than simply satisfying a set of requirements. Thus, by applying a value-driven approach to design, the design community hopes to show that the magnitude of cost and schedule overruns may be reduced, or even eliminated. However, a common criticism of value-driven approaches is that they are difficult to implement, and not sufficiently pragmatic to be used for large scale engineering problems. Further, some argue that less rigorous methods appear to provide reasonable results in practice, and so rigor is not necessary. To reconcile these disparate viewpoints, it must be shown that value-driven approaches contribute to the design process, and can be implemented in practice at a reasonable cost. In response, I propose that the cause for the lack of practicality in value-driven approaches is attributable to the lack of well established and verified methods and tools.
This dissertation presents research that attempts to address this deficiency by first developing a better understanding of effectiveness for methods that seek to enable value-driven design. This investigation leads to a concise set of desired characteristics for methods for guiding the development of value-models which then motivate the creation of a Systematic Method for Developing Value Models (SMDVM). To evaluate the SMDVM, it is applied to the design and retrofit of buildings for energy efficiency. A simulation workbench is developed as a tool to automate the development and analysis of value models for building design and retrofit contexts. The workbench enables architects, engineers, and other practitioners to easily incorporate uncertainty into analyses of building energy consumption, as part of a value-driven approach to design and retrofit.
Advisors/Committee Members: Paredis, Christiaan J. J. (advisor), Augenbroe, Godfried (committee member), Bras, Bert (committee member), Linsey, Julie (committee member), German, Brian (committee member).
Subjects/Keywords: Value-driven design; Building simulation; Design theory; Energy savings performance contracts
…Georgia Tech Uncertainty and Risk Analysis Workbench
GTSD
Georgia Tech Solar Decathlon House… …Georgia Tech
Uncertainty and Risk Analysis Workbench automates the identification of uncertain…
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APA (6th Edition):
Lee, B. D. (2014). A pragmatic value-driven approach to design with applications to energy-conscious buildings. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/53094
Chicago Manual of Style (16th Edition):
Lee, Benjamin David. “A pragmatic value-driven approach to design with applications to energy-conscious buildings.” 2014. Doctoral Dissertation, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/53094.
MLA Handbook (7th Edition):
Lee, Benjamin David. “A pragmatic value-driven approach to design with applications to energy-conscious buildings.” 2014. Web. 19 Jan 2021.
Vancouver:
Lee BD. A pragmatic value-driven approach to design with applications to energy-conscious buildings. [Internet] [Doctoral dissertation]. Georgia Tech; 2014. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/53094.
Council of Science Editors:
Lee BD. A pragmatic value-driven approach to design with applications to energy-conscious buildings. [Doctoral Dissertation]. Georgia Tech; 2014. Available from: http://hdl.handle.net/1853/53094
28.
Atilola, Olufunmilola O.
The effects of representation and analogy on engineering idea generation.
Degree: PhD, Mechanical Engineering, 2014, Georgia Tech
URL: http://hdl.handle.net/1853/53436
► The use of examples in idea generation is a common practice intended to provide inspiration from existing products to the designing of new ones. Examples…
(more)
▼ The use of examples in idea generation is a common practice intended to provide inspiration from existing products to the designing of new ones. Examples can be taken from the Internet, engineering textbooks, analogical databases, literature, a company’s prior designs, or from a competitor company, prior work by the designer, and many other sources. These examples are represented in various ways, such as hand sketches, pictures, computer-aided designs (CAD), physical models, activity diagrams, shape grammars, text descriptions, etc. Design representations can also be broken down by function in the form of functional models and decompositions. The use of these visual or physical examples allows engineers to get a clearer picture of how a design or component works and enables them to have a better understanding of the overall design and function. Each representation has inherent advantages and disadvantages in the way that they portray a design.
Examples are sources for analogies. Analogies from nature, where biological organisms have solved challenging problems in novel ways, are very useful in engineering idea generation and solution retrieval. This process is called biologically inspired design. Engineers often use biologically inspired design to solve problems while increasing creativity and expanding the solution space. Using this method, engineers are able to learn from nature and apply biological principles to real world engineering problems to make effective designs and produce innovative solutions.
It is important to have a clearer understanding of how the use of the representations and characteristics of examples as external stimuli affect the idea generation process in engineering design. Understanding these processes will be invaluable in offering guidelines for how engineering design should be done and what types of external stimuli should be used to allow for innovation and creativity to be enhanced.
This dissertation presents four studies that focus on understanding ways that examples can be used to improve the idea generation process. Three of these studies focus on how the representation of externally imposed examples, which may be used as analogues, influences creativity during idea generation while also minimizing design fixation, which occurs when designers adhere to the features of their own initial design solutions or to features of existing examples. The fourth study focuses on the use of examples as sources for analogical mapping and how these examples produce innovative solutions during idea generation.
The first study compares CAD, sketch, and photograph representation presented individually. The second study compares CAD and sketch representation presented together, and the third study examines function tree and sketch representations. The fourth study looks at the real-world context and impact of examples used as sources for analogical mapping to inspire innovative solutions. The results of the studies show that CAD representations of good examples are effective in allowing engineers to…
Advisors/Committee Members: Linsey, Julie (advisor), Paredis, Chris (committee member), Bras, Bert (committee member), Schaefer, Dirk (committee member), Newstetter, Wendy (committee member), Goel, Ashok (committee member).
Subjects/Keywords: Engineering design; Design theory; Design cognition; Creativity; Biologically inspired design
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APA (6th Edition):
Atilola, O. O. (2014). The effects of representation and analogy on engineering idea generation. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/53436
Chicago Manual of Style (16th Edition):
Atilola, Olufunmilola O. “The effects of representation and analogy on engineering idea generation.” 2014. Doctoral Dissertation, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/53436.
MLA Handbook (7th Edition):
Atilola, Olufunmilola O. “The effects of representation and analogy on engineering idea generation.” 2014. Web. 19 Jan 2021.
Vancouver:
Atilola OO. The effects of representation and analogy on engineering idea generation. [Internet] [Doctoral dissertation]. Georgia Tech; 2014. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/53436.
Council of Science Editors:
Atilola OO. The effects of representation and analogy on engineering idea generation. [Doctoral Dissertation]. Georgia Tech; 2014. Available from: http://hdl.handle.net/1853/53436
29.
Moore, Roxanne Adele.
Value-based global optimization.
Degree: PhD, Mechanical Engineering, 2012, Georgia Tech
URL: http://hdl.handle.net/1853/44750
► Computational models and simulations are essential system design tools that allow for improved decision making and cost reductions during all phases of the design process.…
(more)
▼ Computational models and simulations are essential system design tools that allow for improved decision making and cost reductions during all phases of the design process. However, the most accurate models are often computationally expensive and can therefore only be used sporadically. Consequently, designers are often forced to choose between exploring many design alternatives with less accurate, inexpensive models and evaluating fewer alternatives with the most accurate models. To achieve both broad exploration of the alternatives and accurate determination of the best alternative with reasonable costs incurred, surrogate modeling and variable accuracy modeling are used widely. A surrogate model is a mathematically tractable approximation of a more expensive model based on a limited sampling of that model, while variable accuracy modeling involves a collection of different models of the same system with different accuracies and computational costs. As compared to using only very accurate and expensive models, designers can determine the best solutions more efficiently using surrogate and variable accuracy models because obviously poor solutions can be eliminated inexpensively using only the less expensive, less accurate models. The most accurate models are then reserved for discerning the best solution from the set of good solutions.
In this thesis, a Value-Based Global Optimization (VGO) algorithm is introduced. The algorithm uses kriging-like surrogate models and a sequential sampling strategy based on Value of Information (VoI) to optimize an objective characterized by multiple analysis models with different accuracies. It builds on two primary research contributions. The first is a novel surrogate modeling method that accommodates data from any number of analysis models with different accuracies and costs. The second contribution is the use of Value of Information (VoI) as a new metric for guiding the sequential sampling process for global optimization. In this manner, the cost of further analysis is explicitly taken into account during the optimization process.
Results characterizing the algorithm show that VGO outperforms Efficient Global Optimization (EGO), a similar global optimization algorithm that is considered to be the current state of the art. It is shown that when cost is taken into account in the final utility, VGO achieves a higher utility than EGO with statistical significance. In further experiments, it is shown that VGO can be successfully applied to higher dimensional problems as well as practical engineering design examples.
Advisors/Committee Members: Paredis, Chris (Committee Chair), Bras, Bert (Committee Member), Leamy, Michael (Committee Member), Romero, David (Committee Member), Wu, C.F. Jeff (Committee Member).
Subjects/Keywords: Engineering design; Global optimization; Variable-fidelity modeling; Kriging; Engineering design; Multidisciplinary design optimization; Mathematical optimization; Value analysis (Cost control); Statistical decision
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APA (6th Edition):
Moore, R. A. (2012). Value-based global optimization. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/44750
Chicago Manual of Style (16th Edition):
Moore, Roxanne Adele. “Value-based global optimization.” 2012. Doctoral Dissertation, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/44750.
MLA Handbook (7th Edition):
Moore, Roxanne Adele. “Value-based global optimization.” 2012. Web. 19 Jan 2021.
Vancouver:
Moore RA. Value-based global optimization. [Internet] [Doctoral dissertation]. Georgia Tech; 2012. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/44750.
Council of Science Editors:
Moore RA. Value-based global optimization. [Doctoral Dissertation]. Georgia Tech; 2012. Available from: http://hdl.handle.net/1853/44750
30.
Malak, Richard J., Jr.
Using parameterized efficient sets to model alternatives for systems design decisions.
Degree: PhD, Mechanical Engineering, 2008, Georgia Tech
URL: http://hdl.handle.net/1853/26697
► The broad aim of this research is to contribute knowledge that enables improvements in how designers model decision alternatives at the systems level—i.e., how they…
(more)
▼ The broad aim of this research is to contribute knowledge that enables improvements in how designers model decision alternatives at the systems level—i.e., how they model different system configurations and concepts. There are three principal complications: (1) design concepts and systems configurations are partially-defined solutions to a problem that correspond to a large set of possible design implementations, (2) each concept or configuration may operate on different physical principles, and (3) decisions typically involve tradeoffs between multiple competing objectives that can include "non-engineering" considerations such as production costs and profits.
This research is an investigation of a data-driven approach to modeling partially-defined system alternatives that addresses these issues. The approach is based on compositional strategy in which designers model a system alternative using abstract models of its components. The component models are representations of the rational tradeoffs available to designers when implementing the components. Using these models, designers can predict key properties of the final implementation of each system alternative.
A new construct, called a parameterized efficient set, is introduced as the decision-theoretic basis for generating the component-level tradeoff models. Appropriate efficiency criteria are defined for the cases of deterministic and uncertain data. It is shown that the model composition procedure is mathematically sound under reasonable assumptions for the case of deterministic data. This research also introduces an approach for describing the valid domain of a data-driven model based on the use of support-vector machines. Engineering examples include performing requirements allocation for a hydraulic log splitter and architecture selection for a hybrid vehicle.
Advisors/Committee Members: Paredis, Christiaan J.J. (Committee Chair), Bras, Bert (Committee Member), Choudhary, Ruchi (Committee Member), McGinnis, Leon (Committee Member), Rosen, David (Committee Member).
Subjects/Keywords: System-level decision making; Systems design; Decision-based design; Parameterized efficient sets; Pareto dominance; Stochastic dominance; Decision support systems; Systems engineering
Record Details
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Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Malak, Richard J., J. (2008). Using parameterized efficient sets to model alternatives for systems design decisions. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/26697
Chicago Manual of Style (16th Edition):
Malak, Richard J., Jr. “Using parameterized efficient sets to model alternatives for systems design decisions.” 2008. Doctoral Dissertation, Georgia Tech. Accessed January 19, 2021.
http://hdl.handle.net/1853/26697.
MLA Handbook (7th Edition):
Malak, Richard J., Jr. “Using parameterized efficient sets to model alternatives for systems design decisions.” 2008. Web. 19 Jan 2021.
Vancouver:
Malak, Richard J. J. Using parameterized efficient sets to model alternatives for systems design decisions. [Internet] [Doctoral dissertation]. Georgia Tech; 2008. [cited 2021 Jan 19].
Available from: http://hdl.handle.net/1853/26697.
Council of Science Editors:
Malak, Richard J. J. Using parameterized efficient sets to model alternatives for systems design decisions. [Doctoral Dissertation]. Georgia Tech; 2008. Available from: http://hdl.handle.net/1853/26697
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