4-VA

4-VA@Mason Computing Team Gets Ahead of the Game

Han

While some professors worry that they are two steps behind technology, scholars in Mason’s Department of Computer Science pride themselves on staying two steps ahead.  However, that wasn’t enough for Associate Professor Bo Han, who wanted to deepen the educational experience for students.

When Han’s proposal “Innovating Point Cloud Processing for Networked Systems” was approved for pilot funding by 4-VA@Mason, he brought together co-PI Felix Xiaozhu Lin, Associate Professor, Department of Computer Science in the UVA School of Engineering, specialists from the University of Minnesota (UM), the New Jersey Institute of Technology (NJIT), and graduate and undergraduate students taking his new class.

It was an “all-hands-on-deck” project with each of the team members tackling a variety of challenges, resulting in the delivery of a product they dubbed DeepMix, a mobility-aware, lightweight, and hybrid 3D object detection framework. A unique feature of DeepMix is that it fully utilizes the mobility of headsets to fine-tune detection results and boosts detection precision. In fact, when Han’s team implemented a prototype of DeepMix on Microsoft HoloLens and evaluated its performance through both extensive controlled experiments and a user study with more than 30 participants, DeepMix not only improved detection accuracy by 9.1 to 37.3% but significantly boosted detection accuracy in mobile scenarios.

Han credits the success of this project to his collaboration with partners at UVA, UM, NJIT, and especially his students.  These include graduate students Nan Wu, who led the design and implementation of point cloud super-resolution for 3D object detection; along with Ruizhi Cheng and Puqi Zhou, who worked on the implementation and evaluation of gaze-assisted motion prediction for point cloud streaming. Undergraduate student Jing Wang also participated in the project, handling the implementation of the back-end system for image-based localization to improve the accuracy of pose estimation and motion prediction for point cloud streaming.

Pictured: Nan Wu presenting one of the project’s resultant published papers at the Association for Computing Machinery HotMobile 2022 workshop.

“This project was high intensity, multi-faceted, and challenging, but thanks to our 4-VA@Mason grant we were able to develop a great team and produce concrete results,” says Han.  “Now, we want to move our technology to the next level and build interactive holographic communication systems for truly immersive remote collaboration based on mixed reality.

 

 

 

Providing Support for Student Activists: Advocating for Advocates

Chen

Student activism is credited with bringing positive change for political, environmental, economic, and social causes on college campuses. It is recognized, however, that students’ time devoted to organizing and engaging for their cause while balancing coursework and college life can result in burnout. Long overlooked, Mason’s School of Integrative Studies Professor Cher Weixia Chen saw the need to identify and address the stress facing student activists.

Chen wanted to explore the conceptualizations, symptoms, and remedies associated with activists and identify intervention tools for improving their well-being. To attend to the needs of these community members, Chen applied for and received a 4-VA@Mason Collaborative Research Grant “Understanding & Supporting the Well-Being of College-Level Social Justice & Human Rights Advocates/Activists in the State of Virginia.” Chen’s colleagues included Graziella Pagliarulo McCarron, Assistant Professor, School of Integrative Studies, at Mason; Steve Grande, Director of the Office of Community Service-Learning at James Madison University (JMU); and Melody Porter, Director of Office of Community Engagement at the College of William & Mary (WM). They worked together to develop a multi-pronged approach to tackling this issue. Volunteering their work on the project were Taimi Castle, Professor of Justice Studies and director of the JMU Mahatma Gandhi Center for Global Nonviolence, and Lisa Porter, Associate Professor of Sociology at JMU.

After intensive training, the student researchers were able to recruit student activists, conduct interviews, analyze data, and begin preparing a manuscript under the guidance of the faculty team. Student researchers on the project included Kendall Cage, Mireya Campuzano, and Rafaela Lucioni at Mason, Cristal Badu from WM, and Brenda Goodson from JMU.

The team’s initial task was to learn what college student activists face through in-depth personal interviews. Explains Chen, “We found that burnout is prevalent among student activists. They experienced anxiety, panic, depression, hopelessness, or guilt – feeling physically and mentally exhausted. They felt pressure to keep laboring, advocating, organizing, and marching despite their own needs or limits. The difficulty in balancing school, family, and activism and the lack of perceived support for activist work and/or training to do the work at the institutional level all contributed to their burnout.”

With the preliminary findings, faculty and student researchers then designed and organized a Fall 2022 workshop titled “Renewal and Resilience: A Community of Student Activists,” which featured student activists fighting for food security, prison reform, racial justice, voting rights, LGBTQ rights, and gun control at Mason, Virginia Tech, and Virginia Commonwealth University. Following the student activist panel, Castle presented “Regenerating the Self,” encouraging participants to assess their well-being with the help of a self-care workbook. Participants were also encouraged to create their own maintenance plans to help in times of stress. Lisa Porter concluded the program by sharing an interview with Crimson Solano, a community leader of Harrisonburg-based Comité Salvadoreño Paisanos Unidos, a pro-immigrant policy advocate group.

Now, the team is in dissemination mode. The project was featured at https://integrative.gmu.edu/articles/18135.  They are developing a virtual community with the Human Rights and Global Justice Initiative for student activists, which is under construction in conjunction with Mason’s Institute for a Sustainable Earth. They have also submitted a book proposal on the well-being of student activists and are in the process of identifying external grants to expand this research further.

“This 4-VA@Mason grant helped us take a big step forward to take care of student leaders on our college campuses in Virginia. Without them, positive steps toward change are in peril,” says Chen. “It helped us take a critical look at where we can go from here. There is much more to be done.”

Best Practices for the Scholarship of Teaching and Learning Identified and Shared Statewide

 

Effective teaching is a cornerstone of Virginia higher education. To attain that critical bar, it is essential that successful teaching strategies are created and maintained, and that they meet students’ needs.  This necessitates classroom-based research — known as the Scholarship of Teaching and Learning (SoTL). Faculty-focused SoTL research achieves multiple objectives including identifying best practices in educational strategies for a specific field and promoting a university’s overall teaching excellence.

While SoTL is crucial to gain a greater understanding of what works and what doesn’t work in the classroom, very few faculty are prepared to conduct such research independently. Thus, support for SoTL frequently falls to campus Centers for Teaching and Learning (CTLs). CTLs are generally small and tasked with a wide range of faculty assistance, so identifying appropriate SoTL strategies presents a time and resource challenge.

This dilemma faced the Stearns Center at Mason as well as three other 4-VA schools — Virginia Commonwealth University, Virginia Tech, and the University of Virginia.  Each wanted to address the SoTL gap. The solution was recognized via a 4-VA Collaborative Research Grant, allowing the schools to work together to create sustainable SoTL programming.  The goal was to create or refine plans for engaging and supporting faculty in SoTL at their specific institutions, to develop and investigate the impact of cross-institutional support programming for faculty developers, and ultimately improve the research competitiveness of faculty at each institution. Although not part of the 4-VA partnership, the prospect of such work also attracted the attention of faculty at Mary Washington University who were interested in joining the effort.

Led by the Stearns Center for Teaching and Learning Director, Shelley Reid, with key support from Mason graduate assistant Sophia Abbot, the team represented a state-wide effort, including Ed Brantmeier, Interim Executive Director/Assistant Director of the Center for Faculty Innovation (JMU); Dayna Henry Assistant Director of the Scholarship Area at the Center for Faculty Innovation (JMU); Kim Case, Director of Faculty Success (VCU); Kim Filer, Associate Vice Provost for Faculty Development/Director of the Center for Excellence in Teaching and Learning (VT); Lindsay Wheeler, Assistant Director of STEM Education Initiatives at the Center for Teaching Excellence and Jessica Taggart, Postdoctoral Research Associate (UVA);  and Melissa Wells, Assistant Professor/Faculty Fellow of the Center for Teaching (Mary Washington). “Through our 4-VA@Mason grant, as well as the Complementary Grants at our 4-VA partner schools, we saw an opportunity to help CTLs avoid ‘reinventing the wheel’ in a key area of faculty support,” explained Reid. “SoTL is a growth area for CTLs, and this grant provided an opportunity to design that growth intentionally and collaboratively—and then to share the model with other CTLs nationally.”

Together, the group researched and built effective support structures for SoTL training. As a “community of practice,” the group met regularly to exchange strategies already in use and constructed additional strategies and resources for both CTL leaders and faculty. Next, they developed and presented workshops for national and local audiences to guide other CTL leaders in building collaborative structures. At these workshops, attendees learned about evidence-based models, common SoTL support programming across institution types, and received peer feedback on their plans. Presentations were made at the Professional & Organizational Development in Higher Education Network Conference, the International Consortium for Educational Development, the Innovations in Teaching and Learning Conference (Mason), the International Society for the Scholarship of Teaching and Learning Conference on Higher Education Pedagogy (VT), and an online workshop for SCHEV (VCU).

Next, the team created online resources, an open access trove of tools for SoTL developers, including a Taxonomy of common language and organizational structure for understanding a variety of SoTL program models — organized by program type with a detailed description of each model. It also includes examples to further support readers’ envisioning of program possibilities. Further, visitors can access a strategic plan worksheet, which guides SoTL developers through the details of their aspirational and future plans in the context of their institution and provides a venue to receive peer feedback on specific aspects of their plan.

The group continues to spread the word about effective SoTL practices through the following publications:

  • International Journal of Academic Development Impact of a Regional Community of Practice for Academic Developers Engaged in Institution-Level Support for SoTL (Lukes, Abbot, Henry, Wells, Baum, Case, Brantmeier, & Wheeler)
  • To Improve the Academy Strategic Planning Tools for Educational Developers Supporting SoTL Cultures and Programs at their Institutions (Lukes, Abbot, Wheeler, Henry, Case, Wells, Brantmeier)
  • New Directions for Teaching and Learning Examining a Regional Educational Developer Community of Practice for Advancing Institutional Cultures of SoTL Engagement (Abbot, Lukes, Baum, Case, Henry, Brantmeier, Wheeler)

“Our team members have been particularly excited about the positive reception of the collaborative model through the well-attended national workshops. We’re looking forward to the conversations that are made possible through the multiple publications that will increase our audience and enable other CTLs to build their own collaborations.” concludes Reid.

Five 4-VA Schools Collaborate to Better Understand the History of Higher Education

 

The Council for the Advancement of Standards in Higher Education lists the History of Higher Education as an important core course that provides students the opportunity to bridge practice and theory. However, the class is rarely taught by historians and often lacks a focus on the historical thinking, research, and digital literacy skills necessary for a clear-eyed understanding of the higher education landscape.

This dilemma was on the mind of historian Kelly Schrum, Professor, Higher Education Program, and Affiliated Faculty in the Department of History and Art History at Mason.  It also concerned her colleague in the Higher Education Program at Virginia Tech, Assistant Professor, Chase Catalano. Together, via an initial 4-VA Collaborative Research Grant in 2020-2021, they wanted to integrate those missing skills into the class with the hope of increasing research opportunities and creating a valuable open educational resource (OER).

The project, launched during the pandemic, consisted of students at Mason and VT working together and in parallel to learn about the history of higher education while developing historical thinking and research skills.

The project was a great success. “The student-created asynchronous learning activity assignment worked very well, and fostered a true collaboration across our institutions,” said Schrum. In addition to the learning activity assignments, students and faculty contributed to a website, higheredhistory.gmu.edu; piloted a primary source learning activity in two different higher education graduate courses during Fall 2020; and expanded the project to a third course in Spring 2021.

Schrum, Catalano, and Sophia Abbot, a doctoral student at Mason, grew this work into a larger research project on teaching and learning the history of higher education. Thirty-five students agreed to share their work for analysis and 24 were interviewed after completing the course. The survey and interview data made clear that students appreciated the value and relevance of studying the history of higher education for both their curricular and professional goals. One student explained, “We were able to take what we learned in the course and apply it to the project in a way that was very effortless, and that really helped me think about history in a different way.”

The group presented their initial findings at the Conference on Higher Education Pedagogy in February 2021 which were very well received. They then began talking with colleagues around the commonwealth at William & Mary, James Madison University, and Old Dominion University. Their shared interest in improving history of higher education courses prompted Schrum to apply for an extension and expansion of the Collaborative Research Grant. Schrum’s co-PIs at the partner schools requested 4-VA Complementary Grants at their institutions allowing continued work together with a wider lens.

The expansion grant enlarged the initial team to include Assistant Dean for Undergraduate Education Ben Boone of W&M; Art Dean, Executive Director for Access and Inclusion, JMU; Kim Bullington, ODU’s Adjunct Assistant Professor, Educational Foundations and Leadership; and ODU’s Director of Community Outreach & Engagement, Bill Nuckols.

In addition to Abbot, key Mason student scholars on the project included graduate students Allison Loughry and Alicia Ellis, and undergrads Sodaba Azamy and Kelly Tcheou. These students contributed to research, website development, and publications.

The 4-VA extension grant had four key components: 1) collaborate with 4-VA institutions to improve teaching and learning about the history of higher education, and to teach a shared digital assignment;2) expand OER resources on the history of higher education in the United States to provide primary sources, secondary sources, and a database of college and university archives; 3) conduct research on how the history of higher education is taught nationally; and 4) conduct Scholarship of Teaching and Learning research on how students learn historical thinking skills and digital skills as they create asynchronous learning activities on this subject.

With the expansion grant in hand, the Mason, Tech, W&M, and JMU faculty members taught the shared assignment in Fall 2021. Students also explored asynchronous primary source learning activities created by students at all four institutions. ODU taught the shared assignment in Summer 2022. Students at ODU explored primary source learning activities created by students at the other institutions and then developed additional resources which will be shared across institutions in future semesters. Between the five institutions, more than 100 students built individual asynchronous primary source learning activities. Selected activities are publicly available at  https://sites.google.com/view/history-of-higher-ed/learning-activities-examples.

Sophia Abbot

Explains Abbot, “I developed countless skills while collaborating on this project: from deepening my own understanding of the history of higher education and the value of primary sources, to engaging students in authentic, student-driven, project-based assignments. I’ve been inspired by the historical research students have done through this cross-institutional assignment, especially on Virginia institutions—uncovering stories that are rarely told in commonly assigned texts and expanding their understanding of the colleges and universities within which they operate,”

Each school contributed OER materials for the website. In addition to primary and secondary sources, the website now contains a database of institutional archives with digitized content, including yearbooks. Thanks to the two undergraduate research assistants, Azamy and Tcheo, over 700 institutional archives were cataloged on the site, including 48 Hispanic-serving institutions (HSIs), 24 historically black colleges and universities (HBCUs), and 15 women’s colleges. Additionally, the list includes 63 community colleges which is especially important given the lack of attention to these institutions historically.

Azamy and Tcheo have also reviewed and analyzed 70 course syllabi submitted by History of Higher Education instructors across the U.S. They prepared a summary report of common readings and course topics. Their findings supported several academic articles now underway addressing how these courses are typically structured and taught. Their work, along with that of Loughry, also supported a grant proposal submitted to the National Endowment for the Humanities (NEH) Institute for Higher Education Faculty program.

The team credits the 4-VA grant for allowing members to do the diligent research necessary to create these important resources.

“This 4-VA project fostered meaningful and lasting collaboration across five Virginia institutions. While each university approached the history of higher education course from its own perspective, we were able to work together on a shared assignment that allowed for a rich learning experience among faculty and students across campuses. The results speak for themselves!” – Kelly Schrum, Professor, Higher Education Program, Affiliated Faculty, History and Art History, Mason

 

“I sincerely appreciated having an opportunity to collaborate with colleagues across the state for this 4-VA project. Through our conversations and research, I developed new pedagogical approaches that benefited students and deepened my thinking about the history of higher education.”
– Chase Catalano, Assistant Professor, Higher Education, VT

 

“We really enjoyed being part of this effort to expand student research on the history of higher education. Everyone came away from this project with a deeper understanding of how important it is to develop critical thinking skills and to look beyond our own institutions.”
– Ben Boone, Assistant Dean for Undergraduate Education, W&M

 

“The website, which holds a treasure trove of student research and engagement from a wide range of institutions, will be invaluable as we move ahead in studying the complex and influential histories of American higher education.”
– Art Dean, Executive Director for Access, and Inclusion, JMU

 

 

“When this asynchronous learning project was first introduced to the students, they were thrilled at the thought of not having to write a 20-page paper, however in the end, they did more work doing research on their chosen subject. They enjoyed this project because it allowed them a space for research and reflection, and it taught them how to create an interactive learning environment in an asynchronous environment. Being able to evaluate and participate in the projects created by other students in other universities across Virginia also taught them about their peers’ projects, too.”
– Kim Bullington, Adjunct Assistant Professor, Educational Foundations and Leadership, ODU



Outcomes:

Scholarly Conference Presentations

Catalano, C. & Hernandez, R. (2022, March). Why do we teach history? Instructor and student perspectives. ACPA-College Student Educators Conference, St. Louis, MO, United States.

Schrum, K., Abbot, S., & Catalano, C. (2022, January 6-9). History of Higher Education: Students Making Sense of Primary Sources by Designing Asynchronous Learning Activities [Poster]. American Historical Association, New Orleans, LA, United States.

Abbot, S., Schrum, K., & Catalano, C. (2021, November 13-15). Teaching Historical Thinking to Higher Education Graduate Students [Poster]. Southern Association for College Student Affairs, Norfolk, VA, United States.

Abbot, S., Schrum, K., Hernandez, R., Fong, W. L., & Loughry, A. (2021, October 26-29). Designing Digital Activities for Authentic Learning [Panel, Virtual]. International Society for the Scholarship of Teaching and Learning Conference.

Schrum, K. & Abbot, S. (2021, September 20-24). On-Demand: Engaging students online through a peer-to-peer asynchronous teaching assignment [On-Demand Presentation, Virtual]. Innovations in Teaching and Learning, Fairfax, VA, United States.

Abbot, S. (2021, September 20-24). SoTL Showcase [Panel, Virtual]. Innovations in Teaching and Learning, Fairfax, VA, United States.

Abbot, S., Schrum, K., & Catalano, C. (2021, February 3-5). Graduate Students Learning and Teaching History through Asynchronous Activities [Poster session, virtual]. Conference on Higher Education Pedagogy, Blacksburg, VA, United States.

Publications

Catalano, D., Schrum, K., Fay, E., & Abbot, S. (forthcoming, 2023). ‘I can learn from the past’: Making the history of higher education relevant through social justice education pedagogy. The History Teacher.

Loughry, A., Abbot, S., Schrum, K., & Catalano, D. (forthcoming 2023). Developing digital skills through a student-facilitated asynchronous learning activity. The Journal of Interactive Technology and Pedagogy.

Schrum, K., Abbot, S., Loughry, A., & Catalano, D. (forthcoming 2024). “I wanted to know!”: Engaging learners in the history of higher education through an authentic digital assessment. The History Teacher.

Schrum, K, Abbot, S., Fay, E., Loughry, A., & Catalano, C. (in process). Teaching historical thinking through the history of higher education.

External Funding

“Unpacking the History of Higher Education in the United States.”
National Endowment for the Humanities (NEH) Institute for Higher Education Faculty award.

Provost’s Graduate Student Travel Grant (January 2022)
American Historical Association Travel Grant (January 2022)
Southern Association of College Student Affairs Travel Grant (November 2021)

 

 

 

 

 

Mason team joins with Virginia Tech on Concrete Research for Infrastructure Security

 

While modern weapon makers churn out more powerful artillery creating concern about infrastructure security, civil engineers are working to construct safer and more durably designed buildings to protect society. To that end, one such development is a new form of concrete known as high-performance fiber reinforced concrete (HP-FRC). It is believed that this adaptation of concrete could be critical in the field of protective design specifically regarding ballistic impact.  However, as this material is still new to the industry there is little understanding about just how it can withstand high impact blast loads.

Girum Urgessa

The lack of data regarding how HP-FRC stands up to blasts got Mason’s Associate Professor Girum Urgessa thinking.  Urgessa, teaching in the Sid and Reva Dewberry Department of Civil, Environmental, and Infrastructure Engineering (CEIE) explains, “Here at Mason, we’ve studied the modeling aspect of the penetration mechanics, but our verification capability is limited because of the scarcity of experimental data.”  However, Urgessa saw a perfect match for research collaboration with Eric Jacques, Assistant Professor in the Structural Engineering & Materials Group at Virginia Tech.  There, Jacques can access the Thomas Murray Structures Laboratory, equipped with a large-scale gas-detonation blast simulator.

The collaboration came to fruition via Urgessa’s 4-VA@Mason grant Scaled-testing of Projectile Penetration in Conventional and High-Strength Concrete Targets. In addition to Urgessa and Jacques on the project, Mason faculty member Dhafer Marzougui and graduate student Geoffrey Dilg volunteered their time assisting with post-test computational modeling. Undergraduate student Shima Abdel Monem Awwad also worked on the project. The project team got started, building 15 small-scale fiber-reinforced concrete targets of varying thicknesses. These were built at Tech for ballistic experiments using a light gas gun.

Eric Jacques

Four HP-FRC specimens were subjected to ballistic projectile impact loading, which provided the ability to model/predict projectile penetration depths across a variety of concrete strengths and types. Says Urgessa, “Three out of four initial trials provided us with complete projectile perforation, while the third trial resulted in spalling, penetration, and radial cracking.”  Although they were able to conclude that the Cem-FIL glass fibers helped reduce the effects of the cracking by holding the sections together, they did not stop the projectile from perforating. In the cases where the projectile perforated through the specimen, the fibers had either pulled out of the concrete or ruptured at most crack locations.

“Overall, this experiment proved to be very successful and has given us the opportunity to shed light on a relatively new material and that has a variety of real-world applications,” concluded Urgessa.

Dhafer Marzougui
Shimaa Abdel Monem Awwad

Mason and UVA Collaborate to Create Successful Energy-Efficient Desalination Technique

 

With 97% of the world’s water held by oceans, the effort to develop effective saltwater desalination is a high priority amongst the world’s scientists. Of the current water desalination methods, capacitive deionization (CDI) is the most prevalent, where ions and chemicals are energy-efficiently removed from water by applying a low electrical charge.  It is acknowledged, though, that there is much more to understand about the kinetics of the process which could improve the salt absorption capacity of CDI.

It was this challenge that caught the interest of Assistant Professor Pei Dong in the Department of Mechanical Engineering at the Mason’s College of Engineering and Computing. However, she recognized that tackling this topic would be substantially boosted by a 4-VA collaboration incorporating research underway in the lab of Baoxing Xu, in UVA’s Mechanical and Aerospace Engineering Department.  Xu’s group investigates multiscale/multiphysics modeling and simulations of solid-liquid interactions, especially systems in response to external stimuli such as temperature, electrical, and mechanical fields.  Dong believed that by working together, they could investigate the adsorption process to further identify, design, and synthesize more effective carbon materials for use in the CDI process.

Fast forward through the research (complete with a pandemic and the resulting lab closures) — Dong and her team report that they have indeed synthesized different carbon materials which show a much higher salt adsorption capacity. Dong anticipates that this technique could dramatically lower desalination costs and contribute to the sustainable development goals in Virginia, the US, and beyond.

Along with this successful research outcome, Dong explains that the 4-VA project produced several other beneficial consequences, especially a new collaboration among Mason and UVA faculty and students.  She also notes the journey provided a rich educational experience for students — with a combination of experimental and computational skills allowing them to contribute to future engineering innovation in this emerging field.

That experience was especially true for PhD candidate, Rui He. He oversaw the project in Dong’s lab, administering the tests — including surface area, water contact angle, electrical property, and water desalination.  He also prepared the wood converted carbon and the potassium hydroxide activation. In addition, the team worked together to print a 3D CDI cell and assembled the experimental setup, installing the wood converted carbon into the cell.

“I learned a lot about teamwork,” He explains. “I needed to teach the undergraduates how to run the lab experiments and data analysis as a team, and make sure every step is what we wanted.” He also learned about problem solving, “Sometimes we didn’t get the results we expected, and we needed to find out where things went wrong and fix the problem. For example, the 3D printed CDI cell was a challenge at the beginning because it can’t prevent the leakage of water.  We tried a lot of different designs, and finally got one to work.”

Several of the other Mason students involved in the research were undergraduate Crystal Bowers and PhD candidate Xiaozhou Huang. Pictured in the photo are (left to right): Rui He, Crystal Bowers and Xiaozhou Huang.

Thanks to the project’s success, the research has received wide recognition. The work entitled “Binder-Free Wood Converted Carbon for Enhanced Water Desalination Performance” has been published in the high impact journal Advanced Functional Materials. Rui He won the “Excellent Student Presentation Award” in the 242nd Electrochemical Society Meeting for both his oral presentation and poster. This work has also been presented at Virginia Clean Energy and Catalysis Club 2022 Summit (poster) and the International Mechanical Engineering Congress & Exposition 2022 (oral presentation).

The good work continues, thanks to the initial spark lit by 4-VA@Mason.

Team Vibe Vision and Team Spider Sense Connecting Technology and Societal Good

Building a good team is often cited as the key to success in a variety of spheres — from business to the arts, from sports to science. For Mason Mechanical Engineering professor Jeffrey Moran, however, the ability to hand-pick a team for the second phase of the 4-VA Collaborative Research project “Toward T-Shaped Graduates: A Joint Capstone Program at the Nexus of Mechanical Engineering and Science and Technology Policy”, was completely out of his hands. Fortunately, though, the eight students who signed up for the Capstone project last summer — indicating an interest in building on the continuing project — turned out to be Moran’s Dream Team.

As luck would have it for Moran, when surveys went out to rising mechanical engineering seniors outlining opportunities for capstone projects last summer, the ‘just right’ eight students chose the option of working on the vehicle alert system.

The project, which tackles barriers to operating a vehicle for the hard of hearing and deaf communities by building assistive technologies to alert drivers and passengers to sounds around the vehicle, was launched by Moran’s capstone students in collaboration with a counterpart team at James Madison University, in the 2020-21 academic year. Yet, in part because of pandemic-related restrictions that kept the teams from working together, the tools and technologies that were developed on the project needed some advancements to improve the final product. Refinements and enhancements were necessary.

The reasons the eight students selected the project were as diverse as their backgrounds. A sampling:

  • Javeria Jawad, who acted as one of the two team leads, was drawn to the hands-on aspect of the task, explained, “I liked the practical implications of the project, it wasn’t just theory, it actually built something.”
  • Wadeed Fakhoury felt that the project fulfilled two of his interests, “I like to work on cars, and I love to help people. This opportunity to benefit the hard of hearing operating a vehicle was just what I wanted.”
  • Michael Mullins enjoys developing electronic games and has a computer science background. He saw the project as an opportunity to add to his coding skills. In fact, he led the coding efforts on the project, making crucial improvements to the machine learning-based sound detection platform developed by last year’s team.
  • Faiza Al-Bahrani had perhaps the most compelling interest in joining the mechanical engineering team with its sights set on helping hard of hearing communities. Al-Bahrani has a cochlear implant, without which she is clinically deaf. Removing her implant during work sessions, Al-Bahrani served as the team’s resident Chief of Quality Assurance.

Moving Forward.

This second-year team met Moran’s hopes and expectations for the phase two of the project, combining their skills and interests to build on the existing project.

That initial effort began in 2019 when Moran reached out to 4-VA@Mason with an interest in creating an interdisciplinary capstone program in collaboration with colleagues in the School of Integrated Sciences at James Madison University. The faculty members’ backgrounds ranged from mechanical engineering to political science, Moran wanted to tackle problems that do not fall neatly into one disciplinary category, including the development of renewable energy technologies, autonomous vehicles (often called self-driving cars), the use of robotics in medicine, and more. Moran sought to task students with the goal of addressing public needs; undertaking problems that straddle boundaries between disciplines. “The overarching goal is to create T-shaped graduates who have a general level of knowledge about a broad span of subjects, forming the horizontal part of the T, while cultivating deep knowledge in their own specific area, representing the vertical part,” Moran says.

The first cohort of students, working in the pandemic-affected 2020-21 capstone year, sought to focus on making automobiles easier to use by deaf and hard of hearing populations, with an eye toward self-driving cars, which are expected to number in the hundreds of millions by 2030 and will be used by individuals with varying needs. Armed with data indicating the challenges that deaf and hard of hearing populations face when driving, the students set about outfitting a golf cart with a microphone to detect noises near the vehicle, using machine learning to identify the sound, and creating a seat cushion outfitted with a haptic sensor which vibrates to let the driver know that a hazard is nearby. The driver is then prompted to read a tablet screen mounted on the dashboard that identifies the noise.

Although the 2020 students got a good start, Moran knew there could be more to the project. Much of the in-person work was not possible because of the COVID-19 pandemic, which limited lab work. However, with funding still left in the budget, Moran opted to create a phase two of the effort and asked the next group of students to take up the project.

Take it up, they did. As Hoa “Andy” Huynh, another member of the team leads exclaimed, “We improved on it in every way!”

When the two team leads, Huynh and Jawad, got the project last September, they discussed a plan of activity and started preparing schedules. Jawad explains that the teams did theoretical work over Zoom meetings in the fall. Jawad’s team was tasked with input — working on microphone processing sounds to the laptop, while Huynh’s team focused on output — from the battery to the haptic feedback system. Huynh notes that the two teams initially worked separately on their efforts from September to December of 2021, and then they worked as a group every Tuesday and Thursday in a lab on the Sci Tech campus from January through May 2022. Huynh adds, “Professor Moran attended the Tuesday meetings to check in on our progress, give us feedback, and help us with questions.”

Hamzeh Amin plays an audio siren to prompt the system to identify the sound which is displayed on the laptop.

The teams did all the work in-house except for the original code which was written at James Madison University. Mullen accessed that code and built on it. He then went on to convert Spectron graph images to recognize sounds – a dog bark, gun shot, car horn, and siren — through machine learning.

Indeed, the new teams examined every element of the system and made improvements. Huynh says, “First, their system wasn’t integrated, there was only one microphone, the existing Raspberry Pi was not strong enough, we upgraded to a Windows laptop which is much more powerful.” Huynh adds that while the original cart had only one microphone, the new team installed four. “Based on the feedback from the deaf community surveys, we understood that it was important to indicate which direction the sound was coming from,” he says. “Michael was able to develop a system that identifies the sounds in 2.5 seconds and then it appears on the laptop monitor and also indicates the direction from which the sound is emanating.” Jawad adds that the seat cushion was also expanded to include four vibrating haptics which reveals to the driver the direction of the sound.

Mounted laptop identifying sound and the direction of the sound.

With the newly enhanced golf cart, the 2021-22 group was ready to share the results on the lawn in front of the Nguyen Engineering Building on the Mason Fairfax campus on May 5 for Capstone Day. Nathan M. Kathir, Associate Professor & Director of Senior Projects, says it was an opportunity to, “See their creativity in-person.”

Cars of the Future.

Moran reflects on the progress made by the second phase team and indicates that, with funding still left in the budget, he’d like to return to another collaboration with Integrated Science and Technology group at JMU next year. “Tremendous possibilities remain with this project; we can take this to the next level by making the sound detection system even faster, training it to recognize a wider array of sounds, or filtering the input noise to pick out the hazard from a noisy background,” says Moran. “We’re also interested in making the intensity of the haptic feedback depend on the distance between the sound source and the vehicle.”

Because it is expected that the coding requirements for the project will be expanded, Moran anticipates adding at least one Computer Science major in the team to take ownership of the increasing demands. Moran also hopes to continue to address the policy-related issues associated with the use of conventional and autonomous vehicles by deaf and hard of hearing communities, explaining, “In keeping with the original vision of this project, I would also like to see next year’s students look at the policy implications of this work, particularly the updates that are needed to the Americans with Disabilities Act of 1990 to enable individuals with various needs to use autonomous vehicles more effectively, since AVs are only going to become more numerous on our roads.”

Kyung Min (left) reviews the project with attendees at the Capstone Day project presentations.

“After the Capstone Day event, we had several people say to us, ‘I want this for my car’ – even people who have full use of both ears!” Moran adds. “We’re grateful for 4-VA’s continued support and flexibility as we’ve steered this project through two — and soon to be three — academic years, not to mention a global pandemic. We’re excited to see where it goes next.”

Team Vibe Vision: Hoa “Andy” Huynh (team lead), Michael Mullins, Wadeed Fakhoury, Faiza Al-Bahrani
Team Spider Sense: Javeria Jawad (team lead), Jimmy Torrico, Hamzeh Amin, Kyung Min

The Dream Team (Featured photo) Left to right: Wadeed Fakhoury, Kyung Min, Jimmy Torrico, Professor Moran (in cart), Hamzeh Amin, Faiza Al-Bahrani, Javeria Jawad, Hoa “Andy” Huynh, Michael Mullins (kneeling).

Alexa, Are You Listening?

4-VA@Mason Team Leads Consumer Privacy Analysis of Personal Assistant Devices  

Today, smart home devices are ubiquitous, and increasingly, are playing a more prominent role in the lives of millions of Americans.  The question is, however, how big of a role?  And is it one that most of us are comfortable with?

Vivian Motti

These were the topics attracting the attention of Vivian Motti, Assistant Professor in Mason’s College of Engineering and Computing, Department of Information Sciences and Technology, along with two other Virginia professors — Ahmad Salman at James Madison University and Carol Fung (previously at Virginia Commonwealth University), now at Concordia University, Montreal.  Although Motti was aware of the similar paths of work being conducted by Salman and Fung, she saw an opportunity to intersect with them and combine their work via a grant from 4-VA.

Ahmad Salman
Carol Fung

Now — two years, dozens of interviews, hundreds of reviews, thousands of hours of analysis, and one pandemic later — “Human-Centric Privacy-Preserving Controls for Smart Home Devices” has delivered a concrete set of privacy controls for smart home devices that are effective and easy for consumers to adopt, and relevant and useful for practitioners to incorporate in the implementation of next-generation smart home devices.  In fact, the research team has already provided these controls for future implementation by community members from academia, industry, and standardization bodies including the National Institute of Standards and Technology (NIST).

Motti began her journey by considering how smart home devices were being used – by both tech savvy and not so tech savvy — consumers.  “What we learned is that the people who are very tech savvy were able to keep their data more private because they know how to configure their network. Consequently, the devices they use only have access to information inside the house and it does not get out,” says Motti.  The trouble began, however, with consumers that were not able to get control of their Amazon Alexa, Echo or Dot, or Google Home products.  “These consumers didn’t know how to access the log, or how to delete it, were in danger of losing their personal information.”  Further, Motti explains, the first versions of the device did not even provide access to these logs to the users.  Consequently, says Motti, consumers started to complain.

But just as Motti’s team’s pencils were sharpened, the pandemic hit.  Labs were shuttered and students were sent home. The plan to conduct individual consumer interviews needed to be scuttled.  The group continued, undaunted. “We could not meet with participants in person, so we modified and amended the protocol of the user studies,” says Motti. “Specifically, we relied more on the analysis of online reviews. Then, we conducted user studies using Zoom and Miro (for the co-design sessions). Lastly, we collected data through Amazon MTurk, reaching a larger number of users and analyzed publicly available online reviews.”

With the data (finally) in hand, the team began parsing out the work.  Salman handled the experimental design and data analysis while Fung evaluated physical prototypes to test controls, collaborating with data collection and analysis from user studies.  Motti’s students got involved remotely, with Chola Chhetri, a Mason Graduate Research Assistant leading the way with experimental design and data collection and analysis.  Chhetri also assisted with papers preparation, submission, and presentations. Graduate students Huining Feng and Haoran Lee helped with the analysis of online reviews, experimental design, and data collection while undergrads Jacob Cox and Joseph Aversa looked at graphic user interfaces for privacy controls.

The next hurdle was to aggregate the information and data collected and present it to stakeholders who could impact how the information is implemented within the industry.  “Chola led the meeting with advisory board members from academia, industry, and NIST, sharing the major findings as well as the recommendations and suggestions that we developed to improve current devices,” says Motti.  “It was great because he received very positive feedback about the validity of the work, and what the industry must first recognize to better understand the needs of consumers and end users, and second, to recommend what should be implemented and deployed in the next generation devices.”

While the pace of both compliance and legislation has been slow and reactive in the personal assistant environment, Motti says that a pathway forward is now in the hands of a breath of consumers, industry, and regulators thanks to the 4-VA grant.  In fact, their findings have been widely distributed at the National Cyber Summit, Human Factors in Cybersecurity, Human Aspects of Information Security & Assurance, and the International Conference on Information. Additionally, the study will appear in the Association for Computing Machinery Conference on Computer Supported Cooperative Work, and at the Human Factors and Ergonomics Society Annual Meeting.

But Motti sees a longer road ahead, “This grant allowed me to start with an exploratory approach — we looked at the online polls, looked at the literature, interviewed and surveyed participants. But it also sparked new research questions, new areas we would like to test and to go into more depth. Once we saw the results, we know that there is still more work to be done. So, we plan to apply for larger grants from the Commonwealth Cyber Initiative and the National Science Foundation to have more validation for future work related to the project.”

Alexa will be listening…

 

 

 

“Mapping the University” Using Archives and Digital Tools to Explore Virginia Campus Histories https://mappingtheuniversity.rrchnm.org/

With the expertise and resources of Mason’s Roy Rosenzweig Center for History and New Media (RRCHNM) and Executive Director Mills Kelly to support her, Postdoctoral Research Fellow Jessica Mack considered this possibility: Could digital media and mapping tools be utilized to illustrate the growth of Virginia university campuses, analyzing histories using university archives, digital mapping, and aerial photographs?

This approach, Mack thought, is particularly important as universities across the U.S. reckon with their institutional backstories—including difficult histories of slavery, exclusion, segregation, and bias in higher education. Mack believed it would be revealing to examine how these records left traces on the physical structures of the campus. The project, she determined, would necessitate blending a group of scholars including university archivists, historians, digital specialists, as well as graduate and undergraduate student researchers.

Mack received an enthusiastic response when she contacted other 4-VA

Steve Bookman

schools to get their input on the proposal. However, one institution stood out as the perfect partner – Old Dominion University. ODU was a good fit for two reasons: Like Mason, which broke from UVA 50 years ago to stand on its own, ODU moved out from under the wings of William and Mary. What’s more, when Mack connected with ODU’s University Archivist Steven Bookman, she found the perfect co-PI with the ideal skillset for the project.

After receiving the 4-VA@Mason approval for her proposal, Mack set out on a year-long discovery trail, with she and her team connecting at various points on Mason’s Fairfax campus and throughout the state.

(L to R) Jessica Mack, Laura Brannan Fretwell and Catalina Mayer on Mason’s campus

Mack and graduate research assistant and PhD candidate Laura Brannan Fretwell began archival research trips in Fall 2021 — to Old Dominion University, the University of Virginia, the Fairfax County Courthouse Historic Archives, and the Virginia Room at the Fairfax Public Library, as well as several visits to Mason’s own Special Collections and Research Center at Fenwick Library. “During these visits, we took digital photographs of large quantities of archival material about the founding and early construction of Mason and ODU,” Mack explains. “Vanessa Baez and Professor Matthew Rice of Mason’s Geography and Geoinformation Science Department assessed the aerial imagery that is available of Fairfax and Norfolk around the time these campuses were built, and we created a digital repository of documents, images, and maps.”

“The partnership with ODU has been generative and interesting,” says Mack. “We were able to meet with our 4-VA partner, Steve Bookman, in person last fall at ODU and learn quite a bit about ODU’s history.” Mack’s team held an ongoing series of Zoom meetings with Bookman throughout the year. “As a digital humanities enthusiast, I enjoyed bringing the history of ODU online as well as introducing archival research to my history student,” says Bookman.

The project team also included Greta Swain, another RRCHNM GRA and history PhD student, who created campus maps using a geographic information system during the fall semester.

Joseph Moore

During this time, Mack hired two undergraduate student researchers, Catalina Mayer and Joseph Moore, who worked on the project during both the fall and spring semesters. The project team spent the fall semester gathering archival material and processing and carefully labeling each item using Tropy (tropy.org), a research photo management software developed at RRCHNM. Mack explains, “This was a great opportunity for the students to gain firsthand experience with archival research as well as valuable experience with software, database management, and metadata.” Mayer and Moore made several trips to Special Collections Research Center at Mason’s Fenwick Library to listen to oral history interviews of key Mason administrators and community members to identify audio clips to be used on the site.

The team spent the spring semester analyzing documents, selecting sources, and drafting narrative essays for the site. With the information collected and documentation researched, the team launched into the second phase of the project,https://mappingtheuniversity.rrchnm.org/ which opens their research to the public via a lively and interactive website.

Jason Heppler, senior web developer at RRCHNM, built the website and designed an interface that presents narrative essays alongside dynamic, interactive campus maps. The maps are essential elements on the site as they provide visualizations of the campuses of George Mason University and Old Dominion University developed over time.

“Thanks to a 4-VA Collaborative Research Grant, we have learned more about the parallel histories of these two Virginia institutions and been able to teach students about archival research, digital methods, and writing for broader publics in the process,” says Mack. “Throughout this collaborative project, everyone involved learned new digital and archival skills, and I see that as the greatest success of the project.”

Researching Polar Thermoelectrics: Mason, UVA, JMU Effort Nets Promising Results

Xiaoyan Tan

There’s a lot of energy in the field of energy these days.  One specific area that attracts much attention is in thermoelectric materials, which transforms heat into electricity or converts electricity into cooling technology for power generators or refrigeration. There’s also another appeal in thermoelectric materials — their ability to generate electricity from waste heat released by spacecraft, motor vehicles, and industrial plants — a positive checkmark in the environmentally friendly ‘green’ movement.  Drilling down this issue even further is the area of polar thermoelectrics. The reality in this field, is that fundamental mechanisms which govern the thermoelectric properties in this class of materials are not fully understood.

Gaining a greater awareness of polar thermoelectrics has long intrigued Xiaoyan Tan, Assistant Professor in Mason’s Chemistry and Biochemistry Department. Tan’s research focus is the discovery of functional and multifunctional inorganic solid-state materials, ranging from intermetallics to oxides, with applications in technology and energy conversion.  Tan foresaw the benefits of using density functional theory (DFT) calculations to understand these polar thermoelectric materials better and predict novel polar thermoelectrics. She also saw possible options to expand her research in the field with two other 4-VA schools – UVA and JMU. Tan recognized these routes after reading several of Dr. Prasanna Balachandran’s (UVA) papers and meeting Dr. Masoud Kaveh-Baghbadorani (JMU) at the National Science Foundation Faculty Early Career Development Program.

Prasanna Balachandran
Masoud Kaveh-Baghbadorani

Tan also saw a valuable opportunity for Mason students to learn DFT calculations from Balachandran and to learn how to characterize materials using the second harmonic generation technique from Kaveh-Baghbadorani, which were not available to Mason students.  Tan envisioned that a collaborative research grant from 4-VA@Mason and 4-VA Complementary Grants, available at UVA and JMU, could provide the opening to engage in the shared research.

With the grants awarded and in hand, Tan initialized her plan: Mason students would first synthesize thermoelectric materials, determine the crystal structure, and measure the low-temperature thermoelectric properties. The prepared samples would then be sent to JMU to measure the second harmonic generation properties. Faculty and students from UVA would undertake the majority of theoretical DFT calculations of electronic structure and thermoelectric properties, providing the theoretical understanding of the measured ultra-low thermal conductivity data. Based on knowledge learned from UVA, Mason students compare the experimental results with theoretical results. In addition to the collaboration with UVA and JMU, the team also collaborated with Prof. Susan Kauzlarich at UC-Davis, who assisted with high temperature thermoelectric properties.

With limited access due to pandemic shutdowns, Tan found it initially challenging to manage this research plan. However, the group made do and got to work. Mason PhD candidate Callista Skaggs (pictured in featured image with her poster) was responsible for synthesizing the pure compounds, the characterization of thermoelectric properties at low temperature, and data analysis of obtained results. “I met with the UVA team over Zoom to discuss the project,” says Skaggs. “Each meeting would increase our overall understanding of the compound, allowing each group to discuss what they were doing in data analysis. These meetings allowed the groups to have a better understanding of the project as a whole and to keep the project on track.”

Zachary Messegee

Mason PhD graduate student Zachary Messegee says that working on the project provided an invaluable education. “I learned new instrumentation techniques and got the understanding behind the measurements,” Messegee adds, “During the project, we tried a couple of novel techniques in our lab, and now these experiences and understandings can be replicated for future research activities and passed along to other new members of the group.”

Messegee further explains, “I was responsible for measuring the optical properties of the compounds that Callista prepared and performed data analysis and corresponding figures for publication.” Messegee also benefited from an additional perk on the project, students completing their degrees at Mason were able to attend the “Introduction to Materials Informatics” class taught by Balachandran at UVA. Students learned about machine learning and DFT calculations, which equally expanded knowledge and skills.

The collaboration was appreciated by both students and faculty. As Kaveh-Baghbadorani notes, “First and foremost, this project was a great collaboration with an enthusiastic researcher like Dr. Tan. I found the project an enthralling topic with great potential. In addition, through this project, an undergraduate researcher here at JMU found an opportunity to start learning about a cutting-edge topic.”

And the research has paid off.  Says Tan, “We have successfully identified two promising thermoelectric materials Ag2GeS3 and Ag10Ge3S11. A phase-pure polycrystalline Ag2GeS3 sample has been prepared, and the polar crystal structure and low thermoelectric has been confirmed.”  The results were enthusiastically received at the American Physical Society Spring 2022 meeting, the American Chemical Society (ACS) Spring 2021 meeting, and the North American Solid State Chemistry Conference (Summer 2021), where Skaggs won third place in the poster presentation. The results of this project have been published in a high impact ACS Journal, Chemistry of Materials (https://doi.org/10.1021/acs.chemmater.2c01050)

Skagg’s Third Place Poster

“This was a great experience!” says Skaggs. “I was able to meet professionals in my field and discuss my research with them. They were able to give suggestions on different analysis techniques and characterization methods, that I was unfamiliar with, that could improve my understanding of the material.  Winning third place was a shock – it was gratifying to see that the research I and others had done was valued so highly.”

Balachandran’s take on the project echoed the benefits of the exchange of ideas, “Our group enjoyed the interactions with PI Prof. Tan’s group at GMU. I believe that we understood the strengths and weaknesses of our research capabilities better, which is crucial as we transition to writing collaborative grants. Without this funding, we would not have had a clear path to have generated sufficient preliminary data for a publication and demonstrate that our groups collaborate well.”

Kaveh-Baghbadorani concludes, “There might have been a day, hundreds to thousands of years ago, that scientists and philosophers would sit in a corner and write about their thoughts. That model is destined to fail these days. Great scientific discoveries happen through diverse collaborations. Collaboration with other schools is an inseparable part of conducting any kind of research, that leverages the strength of each partner university and improves efficiencies in higher education. We are thankful for 4-VA at JMU and GMU for promoting this partnership.”