Publications and Presentations (Google Scholar Profile)

2024

  • Benda, B., Rheault, B., Lin, Y., and Ragan, E. (2024). Examining Effects of Technique Awareness on the Detection of Remapped Hands in Virtual Reality. IEEE Transactions on Visualization and Computer Graphics (TVCG). p. 1-11. DOI: 10.1109/TVCG.2024.3372054 (link | pdf)

  • Fu, M., Liu, R., Ragan, E. (2024). An immersive virtual reality experimental study of building occupants’ behavioral compliance during indoor evacuations. International Journal of Disaster Risk Reduction, 107 (2024). (link | pdf)

  • Nourani, M., Hashky, A., and Ragan, E. (2024). User Profiling in Human-AI Design: An Empirical Case Study of Anchoring Bias, Individual Differences, and AI Attitudes. AAAI Conference on Human Computation and Crowdsourcing (AAAI HCOMP 2024), p. 1-10. (pdf)

  • Mehta, D., Whorton, J., Shahriari, R., Ragan, E., Bona, J., Hogan, W., Sexton, K., and Brochhausen, M. (2024). Expanding the Ontology of Organizational Structures of Trauma Centers and Trauma Systems. Proceedings of the International Conference on Biomedical Ontologies 2024, p. 1-7. (pdf)

  • Hashky, A., Rheault, B., Ahsan, A., Benda, B., Audino, T., Lonneman, S., and Ragan, E. (2024). Multi-Modal User Modeling for Task Guidance: A Dataset for Real-Time Assistance with Stress and Interruption Dynamics. Workshop paper. Datasets for Developing Intelligent XR Applications (Data4XR) Workshop, IEEE Conference on Virtual Reality and 3D User Interfaces Abstracts and Workshops (VRW), pp. 544-550. DOI: 10.1109/VRW62533.2024.00105 (link | pdf)

  • Studnicki, A., Ahsan, A., Ragan, E., and Ferris, D. (2024). Brain Dynamics of Balance Loss in Virtual Reality and Real-world Beam. Extended abstract, IEEE VR 2024. IEEE Conference on Virtual Reality and 3D User Interfaces Abstracts and Workshops (VRW), pp. 989-990. DOI: 10.1109/VRW62533.2024.00291. Award winner: Best Poster. (link | pdf)

  • Hashky, A., Rheault, B., Ahsan, A., Newman, L., and Ragan, E. (2024). Multitasking with Graphical Encoding Visualization of Numerical Values in Virtual Reality. Extended abstract, IEEE VR 2024. 2024 IEEE Conference on Virtual Reality and 3D User Interfaces Abstracts and Workshops (VRW), pp. 781-782. DOI: 10.1109/VRW62533.2024.00187. (link | pdf)

  • Rheault, B., Arya, S., Vyas, A., Wang, J., Peddi, R., Benda, B., Gogate, V., Ruozzi, N., Xiang, Y., and Ragan, E. (2024). Predictive Task Guidance with Artificial Intelligence in Augmented Reality. Extended abstract, IEEE VR 2024. 2024 IEEE Conference on Virtual Reality and 3D User Interfaces Abstracts and Workshops (VRW). pp. 973-974. DOI: 10.1109/VRW62533.2024.00283 (link | pdf)

  • Ahsan, A., Tompkins, A., Ragan, E., Ruiz, J., and McMahan, R. (2024). Precueing Compound Tasks in Virtual and Augmented Reality. Extended abstract, IEEE VR 2024. 2024 IEEE Conference on Virtual Reality and 3D User Interfaces Abstracts and Workshops (VRW). pp. 1070-1071. DOI: 10.1109/VRW62533.2024.00331. (link | pdf)

2023

  • Roy, C., Nourani, M., Arya, S., Shanbhag, M., Rahman, T., Ragan, E., Ruozzi, N., Gogate, V. (2023). Explainable Activity Recognition in Videos using Deep Learning and Tractable Probabilistic Models. ACM Transactions on Interactive Intelligent Systems (TiiS), pp. 1-32. DOI: 10.1145/3626961 (link | pdf)

  • Block, J., Bookner, I., Chu, S., Crouser, R., Honeycutt, D., Jonas, R., Kulkarni, A., Paredes, Y., Ragan, E. (2023). Preliminary Perspectives on Information Passing in the Intelligence Community. Analytics 2023, 2, 509-529. DOI: 10.3390/analytics2020028 (link | pdf)

  • Benda, B., Sargunam, S. P., Nourani, M., and Ragan, E. (2023). An Evaluation of View Rotation Techniques for Seated Navigation in Virtual Reality. IEEE Transactions on Visualization and Computer Graphics (TVCG). DOI: 10.1109/TVCG.2023.3258693 (link | pdf)

2022

  • Nourani, M., Roy, C., Honeycutt, D., Ragan, E., and Gogate, V. (2022). DETOXER: Visual Debugging Tool with Multi-Scope Explanations for Temporal Multi-Label Classification. IEEE Computer Graphics and Applications. p. 1-11. DOI: 10.1109/MCG.2022.3201465 (link | pdf)

  • Block, J., Esmaeili, S., Ragan, E., Goodall, J., and Richardson, G. (2022). The Influence of Visual Provenance Representations on Strategies in a Collaborative Hand-off Data Analysis Scenario. IEEE Transactions on Visualization and Computer Graphics (TVCG). p. 1-11. DOI: 10.1109/TVCG.2022.3209495 (link | pdf)

  • Esmaeili, S., Kabir, S., Colas, A., Linder, R., and Ragan, E. (2022). Evaluating Graphical Perception of Visual Motion for Quantitative Data Encoding. IEEE Transactions on Visualization and Computer Graphics (TVCG). doi: 10.1109/TVCG.2022.3193756 . (link | pdf)

  • Nourani, M., Roy, C., Block, J., Honeycutt, D., Rahman, T., Ragan, E., and Gogate, V. (2022). On the Importance of User Backgrounds and Impressions: Lessons Learned from Interactive AI Applications. ACM Transactions on Interactive Intelligent Systems (TiiS). doi: 10.1145/3531066 (link | pdf)

  • You, C., Benda, B., Suma Rosenberg, E., Ragan, E., Lok, B., and Thomas, J. (2022). Strafing Gain: Redirecting Users One Diagonal Step at a Time. IEEE International Symposium on Mixed and Augmented Reality Conference (IEEE ISMAR). pp. 603-611. doi: 10.1109/ISMAR55827.2022.00077

2021

  • Roy, C., Nourani, M., Honeycutt, D., Block, J., Rahman, T., Ragan, E., Ruozzi, N., and Gogate, V. (2021). Explainable Activity Recognition in Videos: Lessons Learned. Applied AI Letters. doi: 10.1002/ail2.59 (link | pdf)

  • Linder, R., Mohseni, S., Yang, F., Pentyala, S., Ragan, E., and Hu, X. (2021). How Level of Explanation Detail Affects Human Performance in Interpretable Intelligent Systems: A Study on Explainable Fact Checking. Applied AI Letters. p. 1-19. doi: 10.1002/ail2.49 (link | pdf)

  • Park, D., Suhail, M., Zheng, M., Dunne, C., Ragan, E., and Elmqvist, N. (2021). StoryFacets: A Design Study on Storytelling with Visualizations for Collaborative Data Analysis. Information Visualization. p. 1-12. August 2021. doi: 10.1177/14738716211032653 (link | pdf)

  • Feijóo-García, P., Kapoor, A., Gardner-McCune, C., and Ragan, E.. (2021). Effects of a Block-based Scaffolded Tool on Students’ Introduction to Hierarchical Data Structures. IEEE Transactions on Education. p. 1-10. doi: 10.1109/TE.2021.3109604 (link | pdf)

  • Giannouchos, T., Ferdinand, A., Schmit, C., Ilangovan, G., Ragan, E., Nowell, W., and Kum, H. (2021). Identifying and Prioritizing Benefits and Risks of using Privacy-Enhancing Software: A Nominal Group Technique Study with Patients Living with Chronic Conditions. Journal of the American Medical Informatics Association. p. 1-10. doi: 10.1093/jamia/ocab073 (link | pdf)

  • Benda, B. and Ragan, E. (2021). The Effects of Virtual Avatar Visibility on Pointing Interpretation by Observers in 3D Environments. IEEE International Symposium on Mixed and Augmented Reality (ISMAR). pp 1-10. DOI: 10.1109/ISMAR52148.2021.00019 (link | pdf)

  • Nourani, M., Roy, C., Block, J., Honeycutt, D., Rahman, T., Ragan, E., and Gogate, V. (2021). Anchoring Bias Affects Mental Models and User Reliance in Explainable AI Systems. ACM International Conference on Intelligent User Interfaces (ACM IUI). pp 1-11. doi: 10.1145/3397481.3450639. Award winner: Honorable Mention Best Paper. (link | pdf | video)

  • Mohseni, S., Block, J., and Ragan, E. (2021). Quantitative Evaluation of Machine Learning Explanations: A Human-Grounded Benchmark. ACM International Conference on Intelligent User Interfaces (ACM IUI). pp 1-10. doi: 10.1145/3397481.3450689 (link | pdf | video)

  • Mohseni, S., Yang, F., Pentyala, S., Du, M., Liu, Y., Lupfer, N., Hu, X., Ji, S., and Ragan, E. (2021). Machine Learning Explanations to Prevent Overtrust in Fake News Detection. International AAAI Conference on Web and Social Media (ICWSM). pp 1-10. (link | pdf)

2020

  • Mohseni, S., Zarei, N., and Ragan, E. (2021). A Multidisciplinary Survey and Framework for Design and Evaluation of Explainable AI Systems. ACM Transactions on Interactive Intelligent Systems (TiiS). Volume 11, Issue 3-4. pp. 1-45. doi: 10.1145/3387166 (link | pdf)

  • Chung, H., Esakia, A., and Ragan, E. (2020). The Impact of Utilizing a Large High-Resolution Display on the Analytical Process for Visual Histories. International Journal of Data Analytics (IJDA). 1(2), pp. 67-88. doi: 10.4018/IJDA.2020070106 (link | pdf)

  • Shi, Y., Du, J., and Ragan, E. (2020). Review visual attention and spatial memory in building inspection: Toward a cognition-driven information system. Advanced Engineering Informatics. pp. 1-15. doi: 10.1016/j.aei.2020.101061 (link | pdf)

  • Bolte, F., Nourani, M., Ragan, E., and Bruckner, S. (2020). SplitStreams: A Visual Metaphor for Evolving Hierarchies. IEEE Transactions on Visualization and Computer Graphics (TVCG). pp. 1-13. doi: 10.1109/TVCG.2020.2973564 (link | pdf)

  • Peña, A., Ragan, E., and Harrison, L. (2020). Memorability of Enhanced Informational Graphics: The Effects of Design Relevance and Chart type on Recall. AACSRE Interdisciplinary Journal of Signage and Wayfinding, Vol 4, No 1., pp. 19-15. doi: 10.15763/issn.2470-9670.2020.v4.i1.a54 (link | pdf)

  • Nourani, M., King, J., and Ragan, E. (2020). The Role of Domain Expertise in User Trust and the Impact of First Impressions with Intelligent Systems. In AAAI Conference on Human Computation and Crowdsourcing (AAAI HCOMP). pp 1-10. (link | pdf)

  • Honeycutt, D., Nourani, M., and Ragan, E. (2020). Soliciting Human-in-the-Loop User Feedback for Interactive Machine Learning Reduces User Trust and Impressions of Model Accuracy. In AAAI Conference on Human Computation and Crowdsourcing (AAAI HCOMP). pp 1-10. (link | pdf)

  • Benda, B., Esmaeili, S., and Ragan, E. (2020). Determining Detection Thresholds for Fixed Positional Offsets for Virtual Hand Remapping in Virtual Reality. In IEEE International Symposium on Mixed and Augmented Reality (IEEE ISMAR). pp 1-10. DOI: 10.1109/ISMAR50242.2020.00050 (pdf | pdf)

  • Ragan, E., Pachuilo, A., Goodall, J., and Bacim, F. (2020). Preserving Contextual Awareness during Selection of Moving Targets in Animated Stream Visualizations. International Conference on Advanced Visual Interfaces (AVI '20). pp. 1-9. ACM. doi: 10.1145/3399715.3399832 Award winner: Honorable Mention Award (top 6% of papers). (link | pdf)

  • Ragan, E., Stamps, A., and Goodall, J. (2020). Empirical Study of Focus-Plus-Context and Aggregation Techniques for the Visualization of Streaming Data. International Conference on Advanced Visual Interfaces (AVI '20). pp. 1-5. ACM. doi: 10.1145/3399715.3399837 (link | pdf)

  • Esmaeili, S., Benda, B., and Ragan, E. (2020). Detection of Scaled Hand Interactions in Virtual Reality: The Effects of Motion Direction and Task Complexity. IEEE Conference on Virtual Reality and 3D User Interfaces (IEEE VR). doi: 10.1109/VR46266.2020.1581285352835 (link | pdf)

  • Block, J. and Ragan, E. (2020). Micro-entries: Encouraging Deeper Evaluation of Mental Models Over Time for Interactive Data Systems. IEEE Evaluation and Beyond - Methodological Approaches for Visualization (BELIV 2020). Workshop at IEEE VIS 2020. doi: 10.1109/BELIV51497.2020.00012 (link | pdf)

  • Mohseni, S. and Ragan, E. (2020). Quantitative Evaluation of Machine Learning Explanations: A Human-Grounded Approach. In Workshop on Artificial Intelligence for HCI: A Modern Approach. Workshop at ACM CHI 2020 (link | pdf)

  • Mohseni, S., Yang, F., Pentyala, S., Du, M., Liu, Y., Lupfer, N., Hu, X., Ji, S., and Ragan, E. (2020). Trust Evolution Over Time in Explainable AI for Fake News Detection. In Workshop on Human-Centered Approaches to Fair and Responsible AI. Workshop at ACM CHI 2020 (link | pdf)

  • Paul, D. and Ragan, E. (2020). Subtle Gaze Direction with Asymmetric Field-of-View Modulation in Headworn Virtual Reality. Extended abstract. IEEE Virtual Reality and 3D User Interfaces (IEEE VR 2020). doi: 10.1109/VRW50115.2020.00136 (link | pdf)

  • Nourani, M., Honeycutt, D., Block, J., Roy, C., Rahman, T., Ragan, E., and Gogate, V. (2020). Investigating the Importance of First Impressions and Explainable AI with Interactive Video Analysis. In Extended Abstracts of the 2020 CHI Conference on Human Factors in Computing Systems (ACM CHI 2020) pp. 1-8. doi: 10.1145/3334480.3382967 (link | pdf)

2019

  • Madanagopal, K., Ragan, E., and Benjamin, P. (2019). Analytic Provenance in Practice: The Role of Provenance in Real-World Visualization and Data Analysis Environments. IEEE Computer Graphics and Applications, 39(6), 30-45. doi: 10.1109/MCG.2019.2933419 (link | pdf)

  • Mohanty, R., Castillo, R., Ragan, E., and Krishnamurthy, V. (2019). Investigating Force Feedback in Mid-air Sketching of Multi-planar 3D Curve-Soups. ASME Journal of Computing and Information Science in Engineering. 1-14. doi: 10.1115/1.4045142 (link | pdf)

  • Shi, Y., Du, J., Ahn, C. R., and Ragan, E. (2019). Impact assessment of reinforced learning methods on construction workers' fall risk behavior using virtual reality. Automation in Construction, 104, 197-214. doi: 10.1016/j.autcon.2019.04.015 (link | pdf)

  • Nourani, M., Kabir, S., Mohseni, S., and Ragan, E. (2019). The Effects of Meaningful and Meaningless Explanations on Trust and Perceived System Accuracy in Intelligent Systems. AAAI Conference on Human Computation and Crowdsourcing (AAAI HCOMP), Vol. 7, No. 1, pp. 97-105. (link | pdf)

  • Kum, HC, Ragan, E., Ilangovan, G., and Ramezani, Q., Li, Q., and Schmit, C. (2019). Enhancing Privacy through an Interactive On-demand Incremental Information Disclosure Interface: Applying Privacy-by-Design to Record Linkage. USENIX Symposium on Usable Privacy and Security (SOUPS 2019). (link | pdf)

  • Feijóo-García, P.G., Wang, S., Cai, J., Polavarapu, N., Gardner-McCune, C., and Ragan, E. (2019). Blocks4DS: A Scaffolded Block-Based Learning Environment for Hierarchical Data Structures. 2019 IEEE Symposium on Visual Languages & Human-Centric Computing (VL/HCC). Memphis, TN, USA. doi: 10.1109/VLHCC.2019.8818759 (link | pdf)

  • Stebbins, T. and Ragan, E. (2019). Redirecting View Rotation in Immersive Movies with Washout Filters. In Proceedings of IEEE Conference on Virtual Reality and 3D User Interfaces (IEEE VR) 2019. doi: 10.1109/VR.2019.8797994 (link | pdf)

  • Shi, Y., Du, J., Sargunam, S. P., Ragan, E. (2019). First Responders' Spatial Working Memory of Large-scale Buildings: Implications of Information Format. In Proceedings of 2019 ASCE International Conference on Computing in Civil Engineering (i3CE2019). (pdf)

  • Kum, HC and Ragan, E. (2019). Exploring the Use of Interactive Interfaces and Feedback Mechanisms to Enhance Privacy in Data Workers through Information Accountability. Workshop on Security Information Workers (WSIW 2019). Workshop at SOUPS 2019. (pdf)

  • Roy, C., Nourani, M., Shanbhag, M., Kabir, S., Rahman, T., Ragan, E., Ruozzi, N. and Gogate, V. (2019). Explainable Activity Recognition in Videos using Dynamic Cutset Networks. 3rd Workshop of Tractable Probabilistic Modeling (TPM 2019).

  • Xu, Q. and Ragan, E. (2019). Effects of Character Guide in Immersive Virtual Reality Stories. Virtual, Augmented and Mixed Reality. Multimodal Interaction. HCII 2019. Lecture Notes in Computer Science, vol 11574. Springer. doi: 10.1007/978-3-030-21607-8_29 (link | pdf)

  • Peña, A., Ragan, E., and Kang, J. (2019). Designing Educational Virtual Environments for Construction Safety: A Case Study in Contextualizing Incident Reports and Engaging Learners. Virtual, Augmented and Mixed Reality. Applications and Case Studies. HCII 2019. Lecture Notes in Computer Science, vol 11575. Springer. doi: 10.1007/978-3-030-21565-1_23 (link | pdf)

  • Roy, C., Shanbhag, M., Rahman, T., Gogate, V., Ruozzi, N., Nourani, M., Ragan, E., and Kabir, S. (2019). Explainable Activity Recognition in Videos. Workshop on Explainable Smart Systems (ExSS), ACM Intelligent User Interfaces (IUI) Workshops 2019. (link | pdf)

  • Peña, A., Nirjhar, E. H., Pachuilo, A., Chaspari, T., and Ragan, E. (2019). Detecting Changes in User Behavior to Understand Interaction Provenance during Visual Data Analysis. User Interactions for Building Knowledge (UIBK) Workshop, ACM Intelligent User Interfaces (IUI) Workshops 2019. (link | pdf)

  • Yang, F., Pentyala, S. K., Mohseni, S., Du, M., Yuan, H., Linder, R., Ragan, E., Ji, S., and Hu, X. (2019). XFake: Explainable Fake News Detector with Visualizations. 2019 Web Conference (WWW). ACM. pp. 1-5. doi: 10.1145/3308558.3314119 (link | pdf)

2018

  • Rahimi, K., Banigan, C., and Ragan, E. (2018). Scene Transitions and Teleportation in Virtual Reality and the Implications for Spatial Awareness and Sickness, IEEE Transactions on Visualization and Computer Graphics (TVCG). pp. 1-15. doi: 10.1109/TVCG.2018.2884468 (link | pdf)

  • Goodall, J., Ragan, E., Steed, C., Reed, J., Richardson, G., Huffer, K., Bridges, R., and Laska, J. (2018). Situ: Identifying and Explaining Suspicious Behavior in Networks, IEEE Transactions on Visualization and Computer Graphics (TVCG). 25(1), 204-214. doi: 10.1109/TVCG.2018.2865029 (link | pdf | video)

  • Han, D., Suhail, M., and Ragan, E. (2018). Evaluating Remapped Physical Reach for Hand Interactions with Passive Haptics in Virtual Reality, IEEE Transactions on Visualization and Computer Graphics (TVCG), 24(4), pp. 1-10. doi: 10.1109/TVCG.2018.2794659. (link | pdf)

  • Mohanty, R., Bohari, U., Ragan, E., and Vinayak. (2018). Kinesthetically Augmented Mid-air Sketching of Multi-planar 3D Curve-Soups. In Proceedings of ASME 2018 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference. doi:10.1115/DETC2018-86141 (link | pdf)

  • Ragan, E., Kum, HC, Ilangovan, G., and Wang, H. (2018). Balancing Privacy and Information Disclosure in Interactive Record Linkage with Visual Masking. In Proceedings of ACM CHI Conference on Human Factors in Computing Systems (ACM CHI 2018). doi: 10.1145/3173574.3173900 Award winner: Honorable Mention Award (top 5% of papers). (link | pdf)

  • Chen, H., Engle, S., Joshi, A., Ragan, E., Yuksel, B., and Harrison, L. (2018). Using Animation to Alleviate Overdraw in Multiclass Scatterplot Matrices. In Proceedings of ACM CHI Conference on Human Factors in Computing Systems (ACM CHI 2018). doi: 10.1145/3173574.3173991 (link | pdf)

  • Shi, Y., Du, J., Ragan, E., Choi, K., and Ma, S. (2018). Social Influence on Construction Safety Behaviors: A Multi-User Virtual Reality Experiment. In Proceedings of Construction Research Congress 2018. New Orleans, LA. doi: 10.1061/9780784481288.018 (link | pdf)

  • Giannouchos, T., Kum, H.-C., Ferdinand, A., Schmit, C., Ilangovan, G., and Ragan, E. (2018). Patients' and Stakeholders' Perceptions of Risk and Benefits of the Privacy Preserving Interactive Record Linkage (PPIRL) Framework. Poster at the Advanced Ethical Research (AER) Conference, 2018, San Diego, CA.

  • Schmit, C., Kum, H.-C., Ragan, E., Ferdinand, A., and Giannouchos, T. (2018). Trusted Third Party Software Approach to Facilitate Data Disclosures Governed by "Minimum Necessary" Legal Standards in Record Linkage Studies. American Public Health Association (APHA). San Diego, CA.

  • Giannouchos T., Kum, H.-C, Ferdinand, A., Schmit, C., Ilangovan, G., Ragan, E. (2018). Patients' and Stakeholders' Perceptions of Risk and Benefits of the Privacy Preserving Interactive Record Linkage (PPIRL) Framework. AcademyHealth Annual Research Meeting (ARM). Seattle, WA.

  • Kum, HC, Ilangovan, G., Li, Q., Li, Y., and Ragan, E. (2018). An effective privacy enhanced interface to support record linkage decisions. Extended abstract. International Journal of Population Data Science. doi: 10.23889/ijpds.v3i4.889 (link | pdf)

  • Stebbins, T. and Ragan, E. (2018). Redirected Scene Rotation for Immersive Movie Experiences. Extended abstract. In Proceedings of IEEE Virtual Reality 2018. doi: 10.1109/VR.2018.8446144 (link | pdf)

  • Linder, R., Stacy, A., Lupfer, N., Kerne, A., and Ragan, E. (2018). Pop the Feed Filter Bubble: Making Reddit Social Media a VR Cityscape. Extended abstract. In Proceedings of IEEE Virtual Reality 2018. doi: 10.1109/VR.2018.8446271 (link | pdf)

  • Suhail, M., Sargunam, S., Han, D., and Ragan, E. (2018). Physical Hand Interaction for Controlling Multiple Virtual Objects in Virtual Reality. Workshop paper. In Proceedings of IWISC 2018: 3rd International Workshop on Interactive and Spatial Computing. pp 64-74. doi: 10.1145/3191801.3191814 Award winner: Best paper. (link | pdf)

  • Sargunam, S. and Ragan, E. (2018). Evaluating Joystick Control for View Rotation in Virtual Reality with Continuous Turning, Discrete Turning, and Field-of-view Reduction. Workshop paper. In Proceedings of IWISC 2018: 3rd International Workshop on Interactive and Spatial Computing. pp 74-79. doi: 10.1145/3191801.3191815 (link | pdf)

2017

  • Saket, B., Srinivasan, A., Ragan, E., and Endert, A. (2017). Evaluating Interactive Graphical Encodings for Data Visualization. IEEE Transactions on Visualization and Computer Graphics (TVCG), PP, 1-14. doi: 10.1109/TVCG.2017.2680452 (link | pdf)

  • Johnson, A., Hicks, D., Ogle, T., Bowman, D., Cline, D., and Ragan, E. (2017). If This Place Could Talk: Using Augmented Reality to Make the Past Visible. Social Education, 81(2), March/April 2017, pp. 112-116(5). (link | pdf)

  • Ragan, E., Scerbo, S., Bacim, F., and Bowman, D. (2017). Amplified Head Rotation in Virtual Reality and the Effects on 3D Search, Training Transfer, and Spatial Orientation. IEEE Transactions on Visualization and Computer Graphics (TVCG), 23(8), 1880-1895. doi: 10.1109/TVCG.2016.2601607 (link | pdf)

  • Sargunam, S., Moghadam, K., Suhail, M., and Ragan, E. (2017). Guided Head Rotation and Amplified Head Rotation: Evaluating Semi-Natural Travel and Viewing Techniques in Virtual Reality. In Proceedings of IEEE Virtual Reality Conference (IEEE VR). doi: 10.1109/VR.2017.7892227 (link | pdf)

  • Hicks, D., Johnson, A., Ogle, T., van Hover, S., Ragan, E., Bowman, D., and Tucker, T. (2017). Making the Invisible Visible: Evaluating the Use of Mixed Reality to Teach a Forgotten Local History - School Segregation - with 5th Graders. Paper presented at the annual meeting of the College and University Faculty Assembly of the NCSS. San Francisco. Award winner: Society for Information Technology and Teacher Education/National Technology Leadership Initiative Award.

  • Mohseni, S., Peña, A., and Ragan, E. (2017). ProvThreads: Analytic Provenance Visualization and Segmentation. Extended poster abstract. In Proceedings of IEEE VIS 2017. (pdf)

  • Tang, F., McMahan, R., Ragan, E. and Allen, T. (2017). Subjective Evaluation of Tactile Fidelity for Single-Finger and Whole-Hand Touch Gestures. International Conference on Virtual, Augmented and Mixed Reality 2017. Lecture Notes in Computer Science, vol 10280. Springer. (link | pdf)

  • Moghadam, K. and Ragan, E.. (2017). Towards Understanding Scene Transition Techniques in Immersive 360 Movies and Cinematic Experiences. Extended abstract. In Proceedings of IEEE Virtual Reality 2017. (link | pdf)

  • Suhail, M., Sargunam, S., Han, D., and Ragan, E.. (2017). Redirected Reach in Virtual Reality: Enabling Natural Hand Interaction at Multiple Virtual Locations with Passive Haptics. Extended abstract. In Proceedings of IEEE Symposium on 3D User Interfaces 2017. (link | pdf)

  • Han, D., Sargunam, S., and Ragan, E.. (2017). Simulating Anthropomorphic Upper Body Actions in Virtual Reality using Head and Hand Motion Data. Extended abstract. In Proceedings of IEEE Virtual Reality 2017. (link | pdf)

  • Peña, A. and Ragan, E.. (2017). Contextualizing Construction Accident Reports in Virtual Environments for Safety Education. Extended abstract. In Proceedings of IEEE Virtual Reality 2017. (link | pdf | video)

  • Brown, C., Bhutra, G., Suhail, M., Xu, Q., and Ragan, E.. (2017). Coordinating Attention and Cooperation in Multi-user Virtual Reality Narratives. Extended abstract. In Proceedings of IEEE Virtual Reality 2017. (link | pdf)

  • Cassel, A., Ragan, E., Wood, L., Nowotarski, C., and Conlee, D. (2017). Virtual Reality for Collaborative Weather Briefings and Education. Poster presentation. 16th Annual AMS Student Conference 2017. American Meteorological Society.

2016

  • Ragan, E., Endert, A., Sanyal, J., and Chen, J. (2016). Characterizing Provenance in Visualization and Data Analysis: An Organizational Framework of Provenance Types and Purposes. IEEE Transactions on Visualization and Computer Graphics (TVCG), 22(1), 31-40. doi: 10.1109/TVCG.2015.2467551 (link | pdf)

  • Stewart, R., Wilkerson, C., Ragan, E., Agreda, M., White, D., and Piburn, J. (2016). A 3D Virtual Environment for Spatio-Temporal Analysis: Theoretical Approach, Proof of Concept, and User Study. In Proceedings of International Conference on Geographic Information Science (GIScience) 2016. (link | pdf)

  • Pachuilo, A., Ragan, E.., and Goodall, J. (2016). Leveraging Interaction History for Intelligent Configuration of Multiple Coordinated Views in Visualization Tools. Logging Interactive Visualizations and Visualizing Interaction Logs (LIVVIL) Workshop at IEEE VIS 2016. (link | pdf)

  • Linder, R., Peña, A., Jayarathna, S., and Ragan, E. (2016). Results and Challenges in Visualizing Analytic Provenance of Text Analysis Tasks Using Interaction Logs. Logging Interactive Visualizations and Visualizing Interaction Logs (LIVVIL) Workshop at IEEE VIS 2016. (link | pdf)

  • Ogle, T., Hicks, D., Bowman, D., Cline, D., Ragan, E., and Tucker, T. (2016). Supporting disciplined inquiry with mobile augmented reality. 2016 AECT International Convention. Las Vegas, Nevada.

2015

  • Ragan, E., Bowman, D., Kopper, R., Stinson, C., Scerbo, S., and McMahan, R. (2015). Effects of Field of View and Visual Complexity on Virtual Reality Training Effectiveness for a Visual Scanning Task. IEEE Transactions on Visualization and Computer Graphics (TVCG), 21(7), 794-807. doi: 10.1109/TVCG.2015.2403312 (link | pdf)

  • Singh, G., Bowman, D., Hicks, D., Cline, D., Ogle, J., Johnson, A., Zlokas, R., Tucker, T., and Ragan, E. (2015). CI-Spy: Designing A Mobile Augmented Reality System for Scaffolding Historical Inquiry Learning. In Proceedings of International Symposium on Mixed and Augmented Reality (ISMAR 2015). MASH'D (Media, Arts, Social Sciences, Humanities & Design) paper. IEEE Computer Society. doi: 10.1109/ISMAR-MASHD.2015.19 (link | pdf)

  • Ragan, E., Goodall, J., and Tung, A. (2015). Evaluating How Level of Detail of Visual History Affects Process Memory. In Proceedings of CHI Conference on Human Factors in Computing Systems (ACM CHI 2015). 2711-2720. ACM. doi: 10.1145/2702123.2702376 (link | pdf)

  • Johnson, A., Hicks, D., Bowman, D., Cline, D., Ogle, T., Singh, G., Zlokas, R., and Ragan, E. (2015). Augmented reality, junior detectives, and the c3 inquiry arc. National Council of Social Studies Annual Conference.

  • Hicks, D., Ogle, T., Bowman, D., Cline, D., Ragan, E., Singh, G., Johnson, A., & Zlokas, R (2015). Reflection on action: Mode 2 knowledge production and the development of mobile augmented reality for scaffolding historical inquiry. Invited demonstration at the Applied Research in Immersive Environments for Learning SIG at the annual conference of the American Educational Research Association.

  • Zlokas, R., Johnson, A., Cline, D., Bowman, D., Singh, G., Ogle, T., Hicks, D., and Ragan, E. (2015). Using augmented reality to help teach elementary school history. National Council on Public History Annual Meeting.

  • Johnson, A., McPherson, K., Ogle, T., Hicks, D., Cline, D., Bowman, D., Singh, G., Zlokas, R., and Ragan, E. (2015). New digital technologies and local history: Making the past visible. Virginia Council for Social Studies.

  • Lukasczyk, J., Liang, X., Luo, W., Middel, A., Ragan, E., Bliss, N., White, D., Hagen, H., and Maciejewski, R. (2015). A Collaborative Web-Based Environmental Data Visualization and Analysis Framework. Workshop paper. Proceedings of the Workshop on Visualization in Environmental Science (EnvirVis Workshop). Workshop at EuroVis, 2015. Eurographics. (pdf)

  • Tang, F., McMahan, R., Ragan, E. and Allen, T. (2015). A Modified Tactile Brush Algorithm for Complex Touch Gestures. Extended poster abstract. In Proceedings of the 2015 IEEE Virtual Reality Conference (pp. 295-296). IEEE Computer Society. doi: 10.1109/VR.2015.7223412 (link | pdf)

2014

  • Ragan, E., Jennings, S., Massey, J., and Doolittle, P. (2014). Unregulated Use of Laptops over Time in Large Lecture Classes. Computers and Education, 78, 78-86. doi: 10.1016/j.compedu.2014.05.002. (link | pdf)

  • Ragan, E. and Goodall, J. (2014). Evaluation Methodology for Comparing Memory and Communication of Analytic Processes in Visual Analytics. Beyond Time And Errors: Novel Evaluation Methods For Visualization (BELIV Workshop). Workshop at IEEE VIS 2014. ACM. doi: 10.1145/2669557.2669563. (link | pdf)

  • Singh, G., Bowman, D., Hicks, D., Cline, D., Ogle, J., Johnson, A., Zlokas, R., and Ragan, E. (2014). CI-Spy: Using Mobile-AR for Scaffolding Historical Inquiry Learning. In Proceedings of International Symposium on Mixed and Augmented Reality (ISMAR 2014). Poster presentation. IEEE Computer Society. doi: 10.1109/ISMAR-AMH.2014.6935444. (link | pdf)

2013

  • Ragan, E., Kopper, R., Schuchardt, P., and Bowman, D. (2013). Studying the Effects of Stereo, Head Tracking, and Field of Regard on a Small-Scale Spatial Judgment Task. IEEE Transactions on Visualization and Computer Graphics (TVCG), 19(5), 886-896. doi: 10.1109/TVCG.2012.163. (link | pdf)

  • Bowman, D., Ragan, E., Scerbo, S., and Bacim, F. (2013). Evaluating the Impact of Head Rotation Amplification on Virtual Reality Training Effectiveness. In Proceedings of Interservice/Industry Training, Simulation and Education Conference (I/ITSEC 2013). Orlando, FL. NTSA.

  • Bacim, F., Ragan, E., Scerbo, S., Setareh, M., Jones, B., and Polys, N. (2013). The Effects of Display Fidelity, Visual Complexity, and Task Scope on Spatial Understanding of 3D Graphs. In Proceedings of Graphics Interface 2013. (link | pdf)

  • Smith, D., Chung, H., Ragan, E., Self, J., North, C., and Cate, A. (2013). Spatial and semantic memory for kinesthetic learning in large-scale visual displays. Poster presentation. Society for Neuroscience 2013. San Diego, California.

2012

  • Bowman, D., McMahan, R., and Ragan, E. (2012). Questioning Naturalism in 3D User Interfaces. Communications of the ACM, 55(9), 78-88. doi: 10.1145/2330667.2330687. (link | pdf)

  • Ragan, E., Huber, K., and Bowman, D. (2012). Supporting Cognitive Processing with Spatial Information Presentations in Virtual Environments. Virtual Reality, 16(4), 301-314. doi: 10.1007/s10055-012-0211-8. (link | pdf)

  • Bowman, D., Stinson, C., Ragan, E., Scerbo, S., Hollerer, T., Lee, C., McMahan, R., and Kopper, R. (2012). Evaluating effectiveness in virtual environments with MR simulation. In Proceedings of Interservice/Industry Training, Simulation and Education Conference (I/ITSEC 2012). Orlando, FL. NTSA. (link | pdf)

  • Ragan, E., Wood, A., McMahan, R., and Bowman, D. (2012). Trade-Offs Related to Travel Techniques and Level of Display Fidelity in Virtual Data-Analysis Environments. In Proceedings of Joint Virtual Reality Conference of EGVE - ICAT - EuroVR, 2012. Eurographics. doi: 10.2312/EGVE/JVRC12/081-084. (link | pdf)

  • Ragan, E., Endert, A., Bowman, D., and Quek, F. (2012). How Spatial Layout, Interactivity, and Persistent Visibility Affect Learning with Large Displays. In Proceedings of the International Working Conference on Advanced Visual Interfaces (AVI 2012). ACM. doi: 10.1145/2254556.2254576. (link | pdf)

  • Ragan, E., Huber, K., Laha, B., and Bowman, D. (2012). The Effects of Navigational Control and Environmental Detail on Learning in 3D Virtual Environments. In Proceedings of the 2012 IEEE Virtual Reality Conference. Orange County, CA. IEEE Computer Society. doi: 10.1109/VR.2012.6180868. (link | pdf)

  • Ragan, E., Wilkes, C., Cao, Y., and Bowman, D. (2012). The Effects of Virtual Character Animation on Spatial Judgments. Extended abstract. In Proceedings of the 2012 IEEE Virtual Reality Conference. Orange County, CA. IEEE Computer Society. doi: 10.1109/VR.2012.6180921. (link | pdf)

  • Bacim, F., Ragan, E., Stinson, C., Scerbo, S., and Bowman, D. (2012). Collaborative Navigation in Virtual Search and Rescue. Research competition entry (3DUI Contest 2012). In Proceedings of the 2012 IEEE Symposium on 3D User Interfaces. IEEE Computer Society. doi: 10.1109/3DUI.2012.6184224. Award winner: First Place contest award. Award winner: Popular Choice Award. (link | pdf | CARNAGE video)

2011

  • McMahan, R., Ragan, E., Leal, A., Beaton, R., and Bowman, D. (2011). Considerations for the Use of Commercial Video Games in Controlled Experiments. Entertainment Computing, 2(1), 3-9. doi: 10.1016/j.entcom.2011.03.002. (link | pdf)

  • Ragan, E., Endert, A., Bowman, D., and Quek, F. (2011). The Effects of Spatial Layout and View Control on Cognitive Processing. In Proceedings of the 2011 ACM CHI Conference on Human Factors in Computing Systems, CHI Works in Progress. Vancouver, BC. ACM. doi: 10.1145/1979742.1979921. (link | pdf)

  • Bowman, D., McMahan, R., Stinson, C., Ragan, E., Scerbo, S., Hollerer, T., Lee, C., and Kopper, R. (2011). Evaluating Effectiveness in Virtual Environments with MR Simulation. Workshop paper. Marine Corps Warfighting Laboratory Workshop.

  • Stinson, C., Kopper, R., Scerbo, B., Ragan, E., and Bowman, D. A. (2011). The Effects of Visual Realism on Training Transfer in Immersive Virtual Environments. Poster presentation. Human Systems Integration Symposium 2011. Vienna, VA. Award winner: Best poster.

2010

  • Ragan, E., Sowndararajan, A., Kopper, R., and Bowman, D. (2010). The Effects of Higher Levels of Immersion on Procedure Memorization Performance and Implications for Educational Virtual Environments. Presence: Teleoperators and Virtual Environments, 19(6), 527-543. doi:10.1162/pres_a_00016. (link | pdf)

  • Ragan, E., Logan, K., Bowman, D., Antol, J., and Brewster, P. (2010). Immersive Virtual Environments for Human Exploration. Poster presentation. In Proceedings of National Space & Missile Materials Symposium 2010. Scottsdale, AZ. (pdf)

  • Ragan, E., Brewster, P., and Antol, J. (2010). Immersive Virtual Environments for Human Exploration and Collaboration. Conference exhibition. Modeling and Simulation World Conference and Expo 2010. Hampton, VA.

2009

  • Bowman, D., Sowndararajan, A., Ragan, E., and Kopper, R. (2009). Higher Levels of Immersion Improve Procedure Memorization Performance. In Proceedings of Joint Virtual Reality Conference of EGVE - ICAT - EuroVR, 2009. Lyon, France. Eurographics (JVRC 2009). doi: 10.2312/EGVE/JVRC09/121-128. Award winner: Best paper honorable mention. (link | pdf)

  • Ragan, E., Frezza, S., and Cannell, J. (2009). Product-Based Learning in Software Engineering Education. In Proceedings of IEEE Frontiers in Education 2009 Conference. San Antonio, Texas. doi: 10.1109/FIE.2009.5350648. (link | pdf)

  • Barksdale, J., Ragan, E., and McCrickard, S. (2009). Easing Team Politics in Agile Usability: A Concept Mapping Approach. In Proceedings of the 2009 Conference on Agile Software Development. Chicago, Illinois. doi: 10.1109/AGILE.2009.57. (link | pdf)

  • Ragan, E., Wilkes, C., Bowman, D. A., and Hollerer, T. (2009). Simulation of Augmented Reality Systems in Purely Virtual Environments. Extended abstract. In Proceedings of the 2009 IEEE Virtual Reality Conference (pp. 287-288). Lafayette, LA. IEEE Computer Society. doi: 10.1109/VR.2009.4811058. (link | pdf)

Other Publications

  • McMahan, R., Ragan, E., Bowman, D., Tang, F., and Lai, C. FIFA: The Framework for Interaction Fidelity Analysis. (2015). University of Texas at Dallas Technical Report. UTDCS-06-15.

  • Bebis, G., Boyle, R., Parvin, B., Koracin, D., Pavlidis, I., Feris, R., McGraw, T., Elendt, M., Kopper, R., Ragan, E., Ye, Z., Weber, G. (Eds.) (2015). Advances in Visual Computing 11th International Symposium, ISVC 2015, Las Vegas, NV, USA, December 14-16, 2015, Proceedings.

  • Ragan, E. (2013). Supporting Learning through Spatial Information Presentations in Virtual Environments. Virginia Tech. Doctoral Dissertation. (link | pdf)

  • Ragan, E., Huber, K., Bowman, D. (2011). Supporting Memorization and Problem Solving with Spatial Information Presentations in Virtual Environments Virginia Tech Computer Science Technical Report TR-11-18.

  • Ragan, E. (2011). Supporting Problem Solving with Spatial Information Displays. In T. Smith-Jackson and T. Coalson (Eds.). ISE 5604: Human Information Processing Scholar Series 2009-4. TR# VT-ISE-ACE2009-4, pp. 1 - 7.