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2023

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Hardin-Wilkes Family Papers - Accession 221, Hardin Family, Wilkes Family Jan 2023

Hardin-Wilkes Family Papers - Accession 221, Hardin Family, Wilkes Family

Manuscript Collection

The Hardin–Wilkes Family Papers consist of correspondence, financial records, ledgers, newspaper clippings, photographs, and printed materials documenting the Hardin and Wilkes families of Chester County, South Carolina. The collection spans from 1833 to 1973, with the bulk of the material dating from the mid-nineteenth through the early twentieth centuries. The papers provide insight into family life, local business activity, and regional history in and around Chester, South Carolina.

A significant portion of the collection consists of correspondence among members of the Hardin and Wilkes families. Of particular note are the letters of Captain Obadiah Hardin (1827–1862), an officer in Company …


The Path To U.S. National Registration Of A Toxic Bait For The Control Of The Small Indian Mongoose, Carmen C. Antaky, Steven C. Hess, Emily W. Ruell, Israel L. Leinbach, Shane R. Siers, Robert T. Sugihara Jan 2023

The Path To U.S. National Registration Of A Toxic Bait For The Control Of The Small Indian Mongoose, Carmen C. Antaky, Steven C. Hess, Emily W. Ruell, Israel L. Leinbach, Shane R. Siers, Robert T. Sugihara

Human–Wildlife Interactions

The small Indian mongoose (Urva auropunctata [syn. Herpestes auropunctatus]; mongoose) is a highly invasive species in its introduced range that negatively impacts ecosystems. Mongooses depredate native species, serve as a vector of disease posing a risk to human health, and cause sanitation issues in food processing facilities and public areas. Introduced for biocontrol in the late 1800s in Hawaiʻi and the Caribbean, mongooses currently have well-established populations across multiple islands in both island archipelagos and have invaded numerous other locations throughout the world. The concern of accidental introduction to mongoose-free islands, the difficulty in species detection, and the …


New Women In The Old Dominion: Race And Gender In Progressive-Era Virginia, Rachel Scott Jan 2023

New Women In The Old Dominion: Race And Gender In Progressive-Era Virginia, Rachel Scott

College of Graduate Studies: Theses & Dissertations

This thesis traces the development of Black and white Southern women’s pursuit of political power between the end of the Civil War and the ratification of the Nineteenth Amendment in 1920. Emancipation and the downfall of the antebellum planter aristocracy upset traditional Southern gender norms and opened new doors for women of both races in the political upheaval of Reconstruction. Though both Black and white women participated in the women’s club movement and joined women’s advocacy and charity groups following the Civil War, their work was distinctive both from each other and from other regional Progressive movements. The context of …


Establishing A Volunteer Group To Assist In The Eradication Of Invasive Brown Treesnakes From Islan Dåno' (Cocos Island), Guam, Martin Kastner, Olympia Terral Jan 2023

Establishing A Volunteer Group To Assist In The Eradication Of Invasive Brown Treesnakes From Islan Dåno' (Cocos Island), Guam, Martin Kastner, Olympia Terral

Human–Wildlife Interactions

Islan Dåno’ (Cocos Island) is an islet of high conservation value located 2.5 km off Guam, USA, in the Western Pacific. It has long been considered free from invasive brown treesnakes (Boiga irregularis; BTS). A recently confirmed breeding population of BTS puts its wildlife populations, including U.S. Endangered Species Act-listed lizard and bird species, at risk. In response, we established Guam’s first volunteer group dedicated to BTS eradication, which we named Friends of Islan Dåno’. We provided training to local volunteer snake searchers and organized regular night searches for BTS on Islan Dåno’. We completed 25 searches between …


Executive Function & Self-Regulation In Preschool Age Children: Mindfulness Intervention, Larissa Lamarca Jan 2023

Executive Function & Self-Regulation In Preschool Age Children: Mindfulness Intervention, Larissa Lamarca

College of Graduate Studies: Theses & Dissertations

Executive function is an umbrella term used in psychology to define a number of cognitive processes that are important for success in daily life. Both self-awareness, being able to focus one’s thoughts and behavior, and self-regulation, being able to manage emotional and behavioral responses, are important components of executive function. Between three- and five-years of age, children begin developing such skills rapidly which are necessary for school readiness. This study recruited children participants from four local preschools to test for improvement in attention and self-regulatory skills. Two schools completed a mindful yoga activity for five consecutive days, while a second …


The Impact Of Feral Honey Bees On Endangered Seabirds In The Hawaiian Islands, André Francis Raine, Scott Driskill, Stephen Rossiter, Jennifer Rothe, Kyle Pias, Rachel Sprague, Alex Dutcher Jan 2023

The Impact Of Feral Honey Bees On Endangered Seabirds In The Hawaiian Islands, André Francis Raine, Scott Driskill, Stephen Rossiter, Jennifer Rothe, Kyle Pias, Rachel Sprague, Alex Dutcher

Human–Wildlife Interactions

The ʻaʻo (Puffinus newellii; Newell’s shearwater) and ʻuaʻu (Pterodroma sandwichensis; Hawaiian petrel) are both endangered seabirds endemic to the Hawaiian Archipelago. For the last decade, multiple colonies on the islands of Kauaʻi and Lānaʻi have been the focus of intensive management (particularly predator control) and monitoring programs. Management has been effective at reducing the number of introduced mammalian predators recorded within colonies with a resultant increase in reproductive success rates for both seabird species. However, in recent years a new threat has emerged—feral honey bees (Apis mellifera; bees)—which were deliberately introduced to the Hawaiian …


Campus Safety Data Gathering, Classification, And Ranking Based On Clery-Act Reports, Walaa F. Abo Elenin Jan 2023

Campus Safety Data Gathering, Classification, And Ranking Based On Clery-Act Reports, Walaa F. Abo Elenin

College of Graduate Studies: Theses & Dissertations

Most existing campus safety rankings are based on criminal incident history with minimal or no consideration of campus security conditions and standard safety measures. Campus safety information published by universities/colleges is usually conceptual/qualitative and not quantitative and are based-on criminal records of these campuses. Thus, no explicit and trusted ranking method for these campuses considers the level of compliance with the standard safety measures. A quantitative safety measure is important to compare different campuses easily and to learn about specific campus safety conditions.

In this thesis, we utilize Clery-Act reports of campuses to automatically analyze their safety conditions and generate …


Using Machine Learning Classification And Esa Sentinel 2 Multispectral Imager Data To Delineate Marsh Vegetation And Measure Ecotone Movement In Coastal Georgia, Thomas A. Pudil Jan 2023

Using Machine Learning Classification And Esa Sentinel 2 Multispectral Imager Data To Delineate Marsh Vegetation And Measure Ecotone Movement In Coastal Georgia, Thomas A. Pudil

College of Graduate Studies: Theses & Dissertations

Tidal marshes are unique communities that are subjected to environmental stressors including sea level rise, salinity change, and drought, resulting in constant change. It is important to monitor these changing areas because of the ecosystem services they provide to us, such as protection from storms and carbon sequestration. The proposed work for this thesis project is focused on the study of tidal marshes and the dynamics between the vegetation species within them. The aim of this project is to use geospatial technology and analyses, along with machine learning classification methods, to monitor change in these valuable ecosystems. The Georgia coast …


The Use Of The Pile Driving Analyzer For Piles Seated On Rock, William Eason Jan 2023

The Use Of The Pile Driving Analyzer For Piles Seated On Rock, William Eason

College of Graduate Studies: Theses & Dissertations

The PDA Test has been used for mostly driven piles since the 1970s. The PDA test gets the capacity of the pile by measuring the displacement of the pile being driven into the ground by using sensors called accelerometers. For the case in Georgia, the pile is sitting on the rock and being struck by the hammer selected. This pile sits on a hole that is already pre-drilled into the ground. There are concerns when striking the pile on hard rock such as damaging the pile because of too much hammer energy or other safety concerns in the field that …


Remote Sensing Of Georgia Tidal Marsh Habitats Using Aerial Photography And Planetscope Satellite Imagery, Harrison M. Currin Jan 2023

Remote Sensing Of Georgia Tidal Marsh Habitats Using Aerial Photography And Planetscope Satellite Imagery, Harrison M. Currin

College of Graduate Studies: Theses & Dissertations

Globally, tidal marshes cover about 90,800 km. Within the state of Georgia tidal marshes are primarily located behind the barrier islands and total 1,619 km2. The combination of high salinity environments and daily inundation, and being dependent on river output, make these dynamic systems. Tidal marshes provide numerous ecosystem services such as carbon and nitrogen sequestration, flood control, coastal protection, and numerous biogeochemical processes. Due to their unique position, tidal marshes are under threat from sea level rise, drought, coastal development, and large-scale disturbance events. Tidal freshwater marshes are especially susceptible to these threats due to their geographic …


The Relationship Between Academic Advising And Students' Completion Of Corequisite Gateway Courses, Michael P. Moran Jan 2023

The Relationship Between Academic Advising And Students' Completion Of Corequisite Gateway Courses, Michael P. Moran

College of Graduate Studies: Theses & Dissertations

This bivariate correlational quantitative study sought to determine how variables predicted students’ course outcomes in first-year English and mathematics courses within a corequisite learning support model. Course outcomes were defined dichotomously on a successful completion or unsuccessful completion basis. The participants of this study included those who initially attempted first-year English (n = 2,055) and mathematics (n = 2,843) course(s) in a corequisite learning support model for the first time between Fall 2018 and Spring 2022 and were assigned as advisees to the professional academic advisors in the centralized advising model. The examined predictors were students’ frequency of sessions, length …


Long Duration Sonophoresis Of Diclofenac To Augment Rehabilitation Of Common Musculoskeletal Injuries, Paddy Jarit, Dominic Klyve, Rod Walters Jan 2023

Long Duration Sonophoresis Of Diclofenac To Augment Rehabilitation Of Common Musculoskeletal Injuries, Paddy Jarit, Dominic Klyve, Rod Walters

Physical Therapy Faculty Publications

Background: The use of long duration sonophoresis (LDS) for musculoskeletal injuries is a new and emerging treatment option for patients undergoing rehabilitation. The treatment is non-invasive, provides multi-hour mechanical stimulus expediating tissue regeneration and deep tissue heat along with local application of therapeutic compound for improved pain relief. The objective of this prospective case study was to evaluate real-world application of diclofenac LDS as an add-on intervention for patients non-responsive to physical therapy alone. Methods: Patient who failed to respond to at least 4 weeks of physical therapy were treated with the addition of 2.5% diclofenac LDS daily for 4 …


Middle Savannah River: An A/R/Tographic Ecopedagogical Ethnography Experimenting With Rhizomatic Perspectives, Lisa Augustine-Chizmar Jan 2023

Middle Savannah River: An A/R/Tographic Ecopedagogical Ethnography Experimenting With Rhizomatic Perspectives, Lisa Augustine-Chizmar

College of Graduate Studies: Theses & Dissertations

This research is an experiment in perspective. Using the four commonplaces (Schwab, 1978), I practiced letting the Savannah River teach me what there is to know about the water, the land, the people, and the other entities that depend on ki through artistic, ethnographic, and ecopedagogical lenses. The ethnographic findings describe the social actors that depend on ki and give a voice to the River. The a/r/tographic findings display the River on a canvas map through two hundred years using paint, clay, photography, video, abstract acrylics, and fabric. Together, these methods contribute to a unique ecopedagogical journey. This word cloud …


Application Of Big Data Technology, Text Classification, And Azure Machine Learning For Financial Risk Management Using Data Science Methodology, Oluwaseyi A. Ijogun Jan 2023

Application Of Big Data Technology, Text Classification, And Azure Machine Learning For Financial Risk Management Using Data Science Methodology, Oluwaseyi A. Ijogun

College of Graduate Studies: Theses & Dissertations

Data science plays a crucial role in enabling organizations to optimize data-driven opportunities within financial risk management. It involves identifying, assessing, and mitigating risks, ultimately safeguarding investments, reducing uncertainty, ensuring regulatory compliance, enhancing decision-making, and fostering long-term sustainability. This thesis explores three facets of Data Science projects: enhancing customer understanding, fraud prevention, and predictive analysis, with the goal of improving existing tools and enabling more informed decision-making. The first project examined leveraged big data technologies, such as Hadoop and Spark, to enhance financial risk management by accurately predicting loan defaulters and their repayment likelihood. In the second project, we investigated …


Loggerhead Sea Turtle (Caretta Caretta) Nesting Experience, Seasonal Variation, And Hatching Success On A Georgia Barrier Island, Luke Sundquist Jan 2023

Loggerhead Sea Turtle (Caretta Caretta) Nesting Experience, Seasonal Variation, And Hatching Success On A Georgia Barrier Island, Luke Sundquist

College of Graduate Studies: Theses & Dissertations

Loggerhead sea turtles nest commonly on the Georgia barrier islands and serve critical roles in human cultures, coastal economies, and multiple ecosystems. However, their global populations are declining and dependent on conservation efforts and informed management of natural and anthropogenic threats. Nesting offers a unique opportunity to research and protect this valuable marine species in terrestrial habitats. Microsatellite DNA sampling from eggshells can consistently identify nesting females from eggshells, allowing tracking of nesting behaviors for large populations over multiple years. Using this novel technology, we compared maternal investment and nest site-selection between first-time nesting neophytes and experienced remigrants. We sampled …


Comparative Analysis Of Fullstack Development Technologies: Frontend, Backend And Database, Qozeem Odeniran Jan 2023

Comparative Analysis Of Fullstack Development Technologies: Frontend, Backend And Database, Qozeem Odeniran

College of Graduate Studies: Theses & Dissertations

Accessing websites with various devices has brought changes in the field of application development. The choice of cross-platform, reusable frameworks is very crucial in this era. This thesis embarks in the evaluation of front-end, back-end, and database technologies to address the status quo. Study-a explores front-end development, focusing on angular.js and react.js. Using these frameworks, comparative web applications were created and evaluated locally. Important insights were obtained through benchmark tests, lighthouse metrics, and architectural evaluations. React.js proves to be a performance leader in spite of the possible influence of a virtual machine, opening the door for additional research. Study b …


Assessing The Fidelity Of School-Level Professional Learning Community Implementation, William W. Thigpen Ii Jan 2023

Assessing The Fidelity Of School-Level Professional Learning Community Implementation, William W. Thigpen Ii

College of Graduate Studies: Theses & Dissertations

ABSTRACT

As schools face increasing accountability, many have turned to professional learning communities (PLCs) as a possible solution. The challenge is that many schools are not implementing PLCs with fidelity. It is imperative that school leaders assess PLC practices to ensure that critical components are being implemented effectively. This research provides a framework for school leaders to assess school leader, teacher, and support staff perceptions of various PLC dimensions. Descriptive statistics were used to determine levels of agreement with statements related to six PLC dimensions. A one-way univariate analysis of variance tests (ANOVA) was used to analyze differences in mean …


Investigating Salinity Intrusion Effects On Sapelo Island, Georgia Using Benthic Macroinvertebrate Bioindicators, Raymond Paul Kidder Ii Jan 2023

Investigating Salinity Intrusion Effects On Sapelo Island, Georgia Using Benthic Macroinvertebrate Bioindicators, Raymond Paul Kidder Ii

College of Graduate Studies: Theses & Dissertations

Coastal wetlands are threatened by the compounding effects of sea level rise and historical land modification. Historically, much of Sapelo Island, Georgia was deforested and drained using a series of ditches and canals to create arable land fit for agriculture and to provide drainage to the inhabited parts of the island. Today, this network of artificial channels is believed to be facilitating the movement of saltwater from the nearby estuary into freshwater areas on the interior of the island. This study aimed to better understand the frequency and magnitude of salinity intrusion events along with their resulting impacts to the …


Network Intrusion Detection Using Deep Reinforcement Learning, Hamed T. Sanusi Jan 2023

Network Intrusion Detection Using Deep Reinforcement Learning, Hamed T. Sanusi

College of Graduate Studies: Theses & Dissertations

This thesis delves into cybersecurity by applying Deep Reinforcement(DRL) Learning in network intrusion detection. One advantage of DRL is the ability to adapt to changing network conditions and evolving attack methods, making it a promising solution for addressing the challenges involved in intrusion detection. The thesis will also discuss the obstacles and benefits of using Classification methods for network intrusion detection and the need for high-quality training data. To train and test our proposed method, the NSL-KDD dataset was used and then adjusted by converting it from a multi-classification to a binary classification, achieved by joining all attacks into one. …


Promoting The Positive: A Case Study Of The Influence Of School Climate On One Turnaround School From 2016-2022, Cynthia Gunner Jan 2023

Promoting The Positive: A Case Study Of The Influence Of School Climate On One Turnaround School From 2016-2022, Cynthia Gunner

College of Graduate Studies: Theses & Dissertations

Schools across the country are finding various means to address the social realities that often exist in high poverty schools. School climate is one of those social realities. While there is research related to school climate in high poverty schools, there are limited case studies related to this subject. This qualitative case study examined how one elementary school was transformed by creating a positive school climate between 2016-2022. This study also explored the impact that the pandemic and subsequent school lockdown had on the newly established school climate. Findings from this study indicated that PF Elementary School established a positive …


Leveraging Targeted Regions Of Interest By Analyzing Code Comprehension With Ai-Enabled Eye-Tracking, Md Shakil Hossain Jan 2023

Leveraging Targeted Regions Of Interest By Analyzing Code Comprehension With Ai-Enabled Eye-Tracking, Md Shakil Hossain

College of Graduate Studies: Theses & Dissertations

Code comprehension studies techniques for extracting information that give insights on how code is understood. For educators teaching programming courses, this is an important but often difficult task, especially given the challenges of large class sizes, limited time, and grading resources. By analyzing where a student looks during a code comprehension task, instructors can gain insights into what information the student deems important and assess whether they are looking in the right areas of the code. The proportion of time spent viewing a part of the code is also a useful indicator of the student's decision-making process. The goal of …


Developing Best Practices For The Propagation Of Spartina Alterniflora For Use In Salt Marsh Restortaion, Justin Hinson Jan 2023

Developing Best Practices For The Propagation Of Spartina Alterniflora For Use In Salt Marsh Restortaion, Justin Hinson

College of Graduate Studies: Theses & Dissertations

Coastal salt marshes are valuable ecosystems under threat from climate change and sea level rise. Living shorelines offer a promising solution, often incorporating the foundational salt marsh species Spartina alterniflora due to its ability to tolerate natural stressors and maintain sediment stability. However, research suggests that seed-based propagation protocols should be developed on a local scale due to the genetic heterogeneity within and between S. alterniflora populations. Here, we attempt to contribute to the development of one such protocol for coastal Georgia S. alterniflora.

In Fall 2021, seeds were collected bi-monthly from four marshes of varying ocean proximity and …


A Camera-Only Based Approach To Traffic Parameter Estimation Using Mobile Observer Methods, Temitope D. Jegede Jan 2023

A Camera-Only Based Approach To Traffic Parameter Estimation Using Mobile Observer Methods, Temitope D. Jegede

College of Graduate Studies: Theses & Dissertations

As vehicles become more modern, a large majority of vehicles on the road will have the required sensors to smoothly interact with other vehicles and infrastructure on the road. There will be many benefits of this new connectivity between vehicles on the road but one of the most profound improvements will be in the area of road accident prevention. Vehicles will be able to share information vital to road safety to oncoming vehicles and vehicles that are occluded so they do not have a direct line of sight to see a pedestrian or another vehicle on the road.

Another advantage …


Predicting Online Course Success From Usage Of An Online Tutoring System, Brett Miles Jan 2023

Predicting Online Course Success From Usage Of An Online Tutoring System, Brett Miles

College of Graduate Studies: Theses & Dissertations

As online learning continues to grow in higher education, quality online support services must also be offered in order to meet the needs of online students. This study sought to investigate the relationship between the use of an outsourced online tutoring system and course success in select University System of Georgia eCore introductory online gateway courses to determine the extent of the relationship between tutoring usage and course success. The researcher employed logistic regression analysis to determine if using online tutoring increased the students’ probability for course success. Further, the researcher also studied the amount of usage to understand if …


Predicting Jamming Systems Frequency Hopping Sequences Using Artificial Neural Networks, Charles Strickland Jan 2023

Predicting Jamming Systems Frequency Hopping Sequences Using Artificial Neural Networks, Charles Strickland

College of Graduate Studies: Theses & Dissertations

This work proposes a neural network architecture that was designed to predict and reverse engineer frequency hopping jamming systems. The neural network was initially optimized for use with a 12th order linear shift feedback register maximum length sequence utilizing a minimal polynomial as the characteristic polynomial. This neural network was then scaled to accommodate 7 different sequences, of orders 6 through 12. The neural network was trained for these sequences using training data that is 10 times the length of the sequence. This information is then used to generate a hopping sequence that reduces the jamming interference to 0 with …


Fabrication And Investigation Of Microfluidic Devices That Produce Non-Linear Chemical Gradients, Elijah L. Waters Jan 2023

Fabrication And Investigation Of Microfluidic Devices That Produce Non-Linear Chemical Gradients, Elijah L. Waters

College of Graduate Studies: Theses & Dissertations

Investigation of cell chemotaxis requires controlled chemical gradients. We investigated microfluidic devices that could enhance small populations' cell assays because of their ability to generate various chemical gradients. Our five designs generate different chemical concentration landscapes that we can easily convert into tools to study cell response to growth factors. Gradient landscapes occurred by splitting and mixing two input fluid concentrations using bifurcations, trifurcations, and Y-mixing junctions in three consecutive steps. Such fluid flow manipulations resulted in nine concentration streams entering a 0.54-mm-wide gradient chamber. The first design used a 1:1 ratio Y-mixer (unbiased) when blending two concentrations, resulting in …


The Influence Of Urban Forms And Street Infrastructure On Pedestrian-Motorist Collisions, Taylor J. Foreman Jan 2023

The Influence Of Urban Forms And Street Infrastructure On Pedestrian-Motorist Collisions, Taylor J. Foreman

College of Graduate Studies: Theses & Dissertations

Unwalkable cities are afflicted by serious issues such as increasing rates of pedestrian traffic accidents, public health concerns, and the denied right to have an accessible city. This study examines how different types of urban forms and street infrastructure contribute to the prevalence of traffic accidents in two major metropolitan cities in the United States: Atlanta, Georgia, and Boston, Massachusetts. This study utilizes geospatial analysis through the Average Nearest Neighbor and Optimized Hot Spot Analysis tools to determine the spatial distribution of traffic accidents throughout both cities. Additionally, statistical tests were conducted to explore the relationships between the number of …


Comparative Analytics On Chilli Plant Disease Using Machine Learning Techniques, Sai Abhishta Roy Seelam Jan 2023

Comparative Analytics On Chilli Plant Disease Using Machine Learning Techniques, Sai Abhishta Roy Seelam

College of Graduate Studies: Theses & Dissertations

This thesis concerns the detection of diseases in chilli plants using machine learning techniques. Three algorithms, viz., Convolutional Neural Network (CNN), Recurrent Neural Network (RNN), and Multi-Layer Perceptron (MLP), and their variants have been employed. Chilli-producing countries, India, Mexico, China, Indonesia, Spain, the United States, and Turkey. India has the world’s largest chilli production of about 49% (according to 2020). Andhra Pradesh (Guntur) is the largest market in India, where their varieties are more popular for pungency and color. This study classifies five kinds of diseases that affect the chilli, namely, leaf spot, whitefly, yellowish, healthy, and leaf curl. A …


Endogenous Antioxidant Response And Lipid Peroxidation Levels In Muscle Tissue Of The Cownose Ray (Rhinoptera Bonasus), Bailey Berry Jan 2023

Endogenous Antioxidant Response And Lipid Peroxidation Levels In Muscle Tissue Of The Cownose Ray (Rhinoptera Bonasus), Bailey Berry

College of Graduate Studies: Theses & Dissertations

Oxidative stress is the result of an imbalance between reactive oxygen species (ROS) and antioxidant response within cells. ROS generation is a natural consequence of ETC activity within the mitochondria and is associated with aerobic metabolism. Oxidative stress data on elasmobranch muscle is limited, with previous studies primarily focusing on mammalian and teleost muscle. Elasmobranch skeletal muscle is generally composed of large proportions of white muscle fibers (anaerobic), low proportions of red muscle fibers (aerobic), and low proportions of pink muscle fibers (anaerobic). The cownose ray, a benthopelagic batoid species, presents an interesting model of study because it contains relatively …


Design And Fabrication Of A High-Performance Heat Exchanger Using An Optimized Three-Dimensional Surface Structure Through Additive Manufacturing, Seth T. Waters Jan 2023

Design And Fabrication Of A High-Performance Heat Exchanger Using An Optimized Three-Dimensional Surface Structure Through Additive Manufacturing, Seth T. Waters

College of Graduate Studies: Theses & Dissertations

A heat exchanger is a device used to transfer thermal energy between two intertwining fluid pathways. In this study, the design of a novel heat exchanger is proposed using functional gradient double gyroid structure. The complex internal geometries of the gyroid structure significantly increases the surface area to volume ratio, and potentially could expressively improve efficiency of the heat transfer. The proposed idea provides a new approach for the design of a high-efficiency heat exchanger. In order to fabricate the complex structured heat exchanger system additive manufacturing is adapted instead of traditionally subtractive manufacturing techniques or casting. The prototypes of …