Search

Your search keyword '"Ghosh, Ritam"' showing total 150 results
Start Over Author "Ghosh, Ritam"
150 results on '"Ghosh, Ritam"'

2. User-Centered Design of Socially Assistive Robotic Combined with Non-Immersive Virtual Reality-based Dyadic Activities for Older Adults Residing in Long Term Care Facilities

Author

Ghosh, Ritam, Khan, Nibraas, Migovich, Miroslava, Tate, Judith A., Maxwell, Cathy, Latshaw, Emily, Newhouse, Paul, Scharre, Douglas W., Tan, Alai, Colopietro, Kelley, Mion, Lorraine C., and Sarkar, Nilanjan

Subjects
Computer Science - Human-Computer Interaction, Electrical Engineering and Systems Science - Systems and Control
Abstract

Apathy impairs the quality of life for older adults and their care providers. While few pharmacological remedies exist, current non-pharmacologic approaches are resource intensive. To address these concerns, this study utilizes a user-centered design (UCD) process to develop and test a set of dyadic activities that provide physical, cognitive, and social stimuli to older adults residing in long-term care (LTC) communities. Within the design, a novel framework that combines socially assistive robots and non-immersive virtual reality (SAR-VR) emphasizing human-robot interaction (HRI) and human-computer interaction (HCI) is utilized with the roles of the robots being coach and entertainer. An interdisciplinary team of engineers, nurses, and physicians collaborated with an advisory panel comprising LTC activity coordinators, staff, and residents to prototype the activities. The study resulted in four virtual activities: three with the humanoid robot, Nao, and one with the animal robot, Aibo. Fourteen participants tested the acceptability of the different components of the system and provided feedback at different stages of development. Participant approval increased significantly over successive iterations of the system highlighting the importance of stakeholder feedback. Five LTC staff members successfully set up the system with minimal help from the researchers, demonstrating the usability of the system for caregivers. Rationale for activity selection, design changes, and both quantitative and qualitative results on the acceptability and usability of the system have been presented. The paper discusses the challenges encountered in developing activities for older adults in LTCs and underscores the necessity of the UCD process to address them.

Published
2024

3. Affective State Detection using fNIRs and Machine Learning

Author

Ghosh, Ritam

Subjects
Computer Science - Human-Computer Interaction, Computer Science - Machine Learning
Abstract

Affective states regulate our day to day to function and has a tremendous effect on mental and physical health. Detection of affective states is of utmost importance for mental health monitoring, smart entertainment selection and dynamic workload management. In this paper, we discussed relevant literature on affective state detection using physiology data, the benefits and limitations of different sensors and methods used for collecting physiology data, and our rationale for selecting functional near-infrared spectroscopy. We present the design of an experiment involving nine subjects to evoke the affective states of meditation, amusement and cognitive load and the results of the attempt to classify using machine learning. A mean accuracy of 83.04% was achieved in three class classification with an individual model; 84.39% accuracy was achieved for a group model and 60.57% accuracy was achieved for subject independent model using leave one out cross validation. It was found that prediction accuracy for cognitive load was higher (evoked using a pen and paper task) than the other two classes (evoked using computer bases tasks). To verify that this discrepancy was not due to motor skills involved in the pen and paper task, a second experiment was conducted using four participants and the results of that experiment has also been presented in the paper.

Published
2024

4. A Survey of Brain Computer Interface Using Non-Invasive Methods

Author

Ghosh, Ritam

Subjects
Computer Science - Human-Computer Interaction, Electrical Engineering and Systems Science - Signal Processing, H.5.2
Abstract

Research on Brain-Computer Interface (BCI) began in the 1970s and has increased in volume and diversified significantly since then. Today BCI is widely used for applications like assistive devices for physically challenged users, mental state monitoring, input devices for hands-free applications, marketing, education, security, games and entertainment. This article explores the advantages and disadvantages of invasive and non-invasive BCI technologies and focuses on use cases of several non-invasive technologies, namely electroencephalogram (EEG), functional Magnetic Resonance Imaging (fMRI), Near Infrared Spectroscopy (NIRs) and hybrid systems.

Published
2023

5. A Novel Loss Function Utilizing Wasserstein Distance to Reduce Subject-Dependent Noise for Generalizable Models in Affective Computing

Author

Khan, Nibraas, Tauseef, Mahrukh, Ghosh, Ritam, and Sarkar, Nilanjan

Subjects
Computer Science - Machine Learning, Computer Science - Artificial Intelligence, Electrical Engineering and Systems Science - Signal Processing
Abstract

Emotions are an essential part of human behavior that can impact thinking, decision-making, and communication skills. Thus, the ability to accurately monitor and identify emotions can be useful in many human-centered applications such as behavioral training, tracking emotional well-being, and development of human-computer interfaces. The correlation between patterns in physiological data and affective states has allowed for the utilization of deep learning techniques which can accurately detect the affective states of a person. However, the generalisability of existing models is often limited by the subject-dependent noise in the physiological data due to variations in a subject's reactions to stimuli. Hence, we propose a novel cost function that employs Optimal Transport Theory, specifically Wasserstein Distance, to scale the importance of subject-dependent data such that higher importance is assigned to patterns in data that are common across all participants while decreasing the importance of patterns that result from subject-dependent noise. The performance of the proposed cost function is demonstrated through an autoencoder with a multi-class classifier attached to the latent space and trained simultaneously to detect different affective states. An autoencoder with a state-of-the-art loss function i.e., Mean Squared Error, is used as a baseline for comparison with our model across four different commonly used datasets. Centroid and minimum distance between different classes are used as a metrics to indicate the separation between different classes in the latent space. An average increase of 14.75% and 17.75% (from benchmark to proposed loss function) was found for minimum and centroid euclidean distance respectively over all datasets., Comment: 9 pages

Published
2023

8. Long-Term Follow-Up of Cerebral Aneurysms Completely Occluded at 6 Months After Intervention with the Woven EndoBridge (WEB) Device: a Retrospective Multicenter Observational Study

Author

El Naamani, Kareem, Mastorakos, Panagiotis, Adeeb, Nimer, Lan, Mathews, Castiglione, James, Khanna, Omaditya, Diestro, Jose Danilo Bengzon, McLellan, Rachel M., Dibas, Mahmoud, Vranic, Justin E., Aslan, Assala, Cuellar-Saenz, Hugo H., Guenego, Adrien, Carnevale, Joseph, Saliou, Guillaume, Ulfert, Christian, Möhlenbruch, Markus, Foreman, Paul M., Vachhani, Jay A., Hafeez, Muhammad U., Waqas, Muhammad, Tutino, Vincent M., Rabinov, James D., Ren, Yifan, Michelozzi, Caterina, Spears, Julian, Panni, Pietro, Griessenauer, Christoph J., Asadi, Hamed, Regenhardt, Robert W., Stapleton, Christopher J., Ghozy, Sherief, Siddiqui, Adnan, Patel, Nirav J., Kan, Peter, Boddu, Srikanth, Knopman, Jared, Aziz-Sultan, Mohammad A., Zanaty, Mario, Ghosh, Ritam, Abbas, Rawad, Amllay, Abdelaziz, Tjoumakaris, Stavropoula I., Gooch, Michael R., Cancelliere, Nicole M., Herial, Nabeel A., Rosenwasser, Robert H., Zarzour, Hekmat, Schmidt, Richard F., Pereira, Vitor Mendes, Patel, Aman B., Jabbour, Pascal, and Dmytriw, Adam A.

Published
2024
Full Text
View/download PDF

9. A Novel Loss Function Utilizing Wasserstein Distance to Reduce Subject-Dependent Noise for Generalizable Models in Affective Computing

Author

Khan, Nibraas, Tauseef, Mahrukh, Ghosh, Ritam, Sarkar, Nilanjan, Goos, Gerhard, Series Editor, Hartmanis, Juris, Founding Editor, van Leeuwen, Jan, Series Editor, Hutchison, David, Editorial Board Member, Kanade, Takeo, Editorial Board Member, Kittler, Josef, Editorial Board Member, Kleinberg, Jon M., Editorial Board Member, Kobsa, Alfred, Series Editor, Mattern, Friedemann, Editorial Board Member, Mitchell, John C., Editorial Board Member, Naor, Moni, Editorial Board Member, Nierstrasz, Oscar, Series Editor, Pandu Rangan, C., Editorial Board Member, Sudan, Madhu, Series Editor, Terzopoulos, Demetri, Editorial Board Member, Tygar, Doug, Editorial Board Member, Weikum, Gerhard, Series Editor, Vardi, Moshe Y, Series Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Schmorrow, Dylan D., editor, and Fidopiastis, Cali M., editor

Published
2024
Full Text
View/download PDF

10. Malware Analysis Based on Malicious Web URLs

Author

Ghosh, Ritam, Kanrar, Soumen, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Mandal, Jyotsna Kumar, editor, Jana, Biswapati, editor, Lu, Tzu-Chuen, editor, and De, Debashis, editor

Published
2024
Full Text
View/download PDF

14. A Data Collection and Annotation Tool for Asynchronous Multimodal Data During Human-Computer Interactions

Author

Khan, Nibraas, Ghosh, Ritam, Migovich, Miroslava, Johnson, Andrew, Witherow, Austin, Taylor, Curtis, Schroder, Matt, Vongpanya, Tyler, Sarkar, Medha, Sarkar, Nilanjan, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Gao, Qin, editor, and Zhou, Jia, editor

Published
2022
Full Text
View/download PDF

15. Iterative User Centered Design of Robot-Mediated Paired Activities for Older Adults with Mild Cognitive Impairment (MCI)

Author

Ghosh, Ritam, Khan, Nibraas, Migovich, Miroslava, Wilson, Devon, Latshaw, Emily, Tate, Judith A., Mion, Lorraine C., Sarkar, Nilanjan, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Gao, Qin, editor, and Zhou, Jia, editor

Published
2022
Full Text
View/download PDF

16. System Architecture and User Interface Design for a Human-Machine Interaction System for Dementia Intervention

Author

Migovich, Miroslava, Ghosh, Ritam, Khan, Nibraas, Tate, Judith A., Mion, Lorraine C., Sarkar, Nilanjan, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Gao, Qin, editor, and Zhou, Jia, editor

Published
2021
Full Text
View/download PDF

24. 314 Long-term Follow-up of Cerebral Aneurysms Completely Occluded at 6 Months After Intervention With the Woven EndoBridge (WEB) Device: A Retrospective Multicenter Observational Study

Author

El Naamani, Kareem, primary, Mastorakos, Panagiotis, additional, Adeeb, Nimer, additional, Lan, Matthews, additional, Castiglione, James, additional, Khanna, Omaditya, additional, Zanaty, Mario, additional, Ghosh, Ritam, additional, Abbas, Rawad, additional, Tjoumakaris, Stavropoula I., additional, Gooch, Michael Reid, additional, Herial, Nabeel, additional, and Rosenwasser, Robert H., additional

Published
2024
Full Text
View/download PDF

26. Predictors of Aneurysm Obliteration in Patients Treated with the WEB Device: Results of a Multicenter Retrospective Study.

Author

Mastorakos, Panagiotis, El Naamani, Kareem, Adeeb, Nimer, Lan, Mathews, Castiglione, James, Khanna, Omaditya, Ghosh, Ritam, Bengzon Diestro, Jose Danilo, Dibas, Mahmoud, McLellan, Rachel M., Algin, Oktay, Ghozy, Sherief, Cancelliere, Nicole M., Aslan, Assala, Cuellar-Saenz, Hugo H., Lay, Sovann V., Guenego, Adrien, Renieri, Leonardo, Carnevale, Joseph, and Saliou, Guillaume

Published
2024
Full Text
View/download PDF

39. Ticagrelor resistance: a case series and algorithm for management of non-responders

Author

Laurent, Dimitri, primary, Dodd, William S, additional, Small, Coulter, additional, Gooch, M Reid, additional, Ghosh, Ritam, additional, Goutnik, Michael, additional, Blatt, Tasha, additional, Porche, Ken, additional, Geh, Ndi, additional, Adamczak, Stephanie, additional, Polifka, Adam J, additional, Brzezicki, Grzegorz, additional, Hoh, Brian, additional, and Chalouhi, Nohra, additional

Published
2021
Full Text
View/download PDF

40. Virtual Residency Training Interviews in the Age of COVID-19 and Beyond

Author

Al Saiegh, Fadi, Ghosh, Ritam, Stefanelli, Anthony, Khanna, Omaditya, Hattar-Medina, Ellina, Hoffman, Michelle, Hafazalla, Karim, Sabourin, Victor, Farrell, Christopher, Tjoumakaris, Stavropoula, Jabbour, Pascal, Sharan, Ashwini D., and Rosenwasser, Robert H.

Subjects
Interviews as Topic, SARS-CoV-2, COVID-19, Humans, Internship and Residency, Letter to the Editor
Published
2020

41. A Cr2O3-doped graphene sensor for early diagnosis of liver cirrhosis: a first-principles study.

Author

Bhateja, Yuvam, Ghosh, Ritam, Sponer, Jiri, Majumdar, Sanhita, and Cassone, Giuseppe

Abstract

Liver cirrhosis is among the leading causes of death worldwide. Because of its asymptomatic evolution, timely diagnosis of liver cirrhosis via non-invasive techniques is currently under investigation. Among the diagnostic methods employing volatile organic compounds directly detectable from breath, sensing of limonene (C10H16) represents one of the most promising strategies for diagnosing alcohol liver diseases, including cirrhosis. In the present work, by means of state-of-the-art Density Functional Theory calculations including the U correction, we present an investigation on the sensing capabilities of a chromium-oxide-doped graphene (i.e., Cr2O3–graphene) structure toward limonene detection. In contrast with other structures such as g-triazobenzol (g-C6N6) monolayers and germanane, which revealed their usefulness in detecting limonene via physisorption, the proposed Cr2O3–graphene heterostructure is capable of undergoing chemisorption upon molecular approaching of limonene over its surface. In fact, a high adsorption energy is recorded (∼−1.6 eV). Besides, a positive Moss–Burstein effect is observed upon adsorption of limomene on the Cr2O3–graphene heterostructure, resulting in a net increase of the bandgap (∼50%), along with a sizeable shift of the Fermi level toward the conduction band. These findings pave the way toward the experimental validation of such predictions and the employment of Cr2O3–graphene heterostructures as sensors of key liver cirrhosis biomarkers. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

42. Comparison of Transradial vs Transfemoral Access in Neurovascular Fellowship Training: Overcoming the Learning Curve

Author

Al Saiegh, Fadi, primary, Sweid, Ahmad, additional, Chalouhi, Nohra, additional, Philipp, Lucas, additional, Mouchtouris, Nikolaos, additional, Khanna, Omaditya, additional, Avery, Michael B, additional, Schmidt, Richard F, additional, Ghosh, Ritam, additional, Hafazalla, Karim, additional, Weinberg, Joshua H, additional, Starke, Robert M, additional, Gooch, M Reid, additional, Tjoumakaris, Stavropoula, additional, Rosenwasser, Robert H, additional, and Jabbour, Pascal, additional

Published
2021
Full Text
View/download PDF

43. Using Evidence-based Criteria for Lumbar Fusion in the Setting of Degenerative Spondylolisthesis

Author

Gonzalez, Glenn A, primary, Montenegro, Thiago, additional, Mahtabfar, Aria, additional, Franco, Daniel M, additional, Thalheimer, Sara, additional, Philipp, Lucas R, additional, Al Saiegh, Fadi, additional, Hines, Kevin, additional, Fatema, Umma, additional, Mouchtouris, Nikolaos, additional, Khanna, Omaditya, additional, Hattar, Ellina, additional, Ghosh, Ritam, additional, Stefanelli, Anthony, additional, Sabourin, Victor, additional, Theofanis, Thana N, additional, Ye, Donald Yandong, additional, Atallah, Elias, additional, Andrews, Carrie E, additional, Keppetipola, Kavantissa M, additional, Fitchett, Evan M, additional, Leibold, Adam T, additional, Wu, Chengyuan, additional, Jallo, Jack, additional, Heller, Joshua E, additional, Sharan, Ashwini D, additional, Prasad, Srinivas K, additional, and Harrop, James S, additional

Published
2020
Full Text
View/download PDF

45. Telemedicine in Neurosurgery

Author

Mouchtouris, Nikolaos, primary, Lavergne, Pascal, additional, Montenegro, Thiago, additional, Gonzalez, Glenn A, additional, Baldassari, Michael P, additional, Ghosh, Ritam, additional, Sharan, Ashwini D, additional, Jabbour, Pascal, additional, Harrop, James S, additional, Rosenwasser, Robert H, additional, and Evans, James J, additional

Published
2020
Full Text
View/download PDF

46. Comparing Unilateral Versus Bilateral Radiculopathy in Lumbar Degenerative Spondylolisthesis Using ODI Scores

Author

Gonzalez, Glenn A, primary, Montenegro, Thiago, additional, Mahtabfar, Aria, additional, Franco, Daniel M, additional, Thalheimer, Sara, additional, Philipp, Lucas R, additional, Al Saiegh, Fadi, additional, Hines, Kevin, additional, Fatema, Umma, additional, Mouchtouris, Nikolaos, additional, Khanna, Omaditya, additional, Hattar, Ellina, additional, Ghosh, Ritam, additional, Stefanelli, Anthony, additional, Sabourin, Victor, additional, Theofanis, Thana N, additional, Ye, Donald Yandong, additional, Atallah, Elias, additional, Andrews, Carrie E, additional, Keppetipola, Kavantissa M, additional, Fitchett, Evan M, additional, Leibold, Adam T, additional, Wu, Chengyuan, additional, Jallo, Jack, additional, Heller, Joshua E, additional, Sharan, Ashwini D, additional, Prasad, Srinivas K, additional, and Harrop, James S, additional

Published
2020
Full Text
View/download PDF

47. Comparison of Transradial vs. Transfemoral Access in Neurovascular Fellowship Training

Author

Al Saiegh, Fadi, primary, Sweid, Ahmad, additional, El Chalouhi, Nohra, additional, Mouchtouris, Nikolaos, additional, Khanna, Omaditya, additional, Ghosh, Ritam, additional, Hafazalla, Karim, additional, Starke, Robert M, additional, Gooch, M. Reid, additional, Tjoumakaris, Stavropoula I, additional, Rosenwasser, Robert H, additional, and Jabbour, Pascal, additional

Published
2020
Full Text
View/download PDF

48. Revascularization and functional outcomes after mechanical thrombectomy: an update to key metrics

Author

Mouchtouris, Nikolaos, primary, Al Saiegh, Fadi, additional, Fitchett, Evan, additional, Andrews, Carrie E., additional, Lang, Michael J., additional, Ghosh, Ritam, additional, Schmidt, Richard F., additional, Chalouhi, Nohra, additional, Barros, Guilherme, additional, Zarzour, Hekmat, additional, Romo, Victor, additional, Herial, Nabeel, additional, Jabbour, Pascal, additional, Tjoumakaris, Stavropoula I., additional, Rosenwasser, Robert H., additional, and Gooch, M. Reid, additional

Published
2020
Full Text
View/download PDF

49. Cerebral deep venous thrombosis and COVID-19: case report

Author

Hoelscher, Christian, primary, Sweid, Ahmad, additional, Ghosh, Ritam, additional, Al Saiegh, Fadi, additional, Keppetipola, Kavantissa M., additional, Farrell, Christopher J., additional, Jallo, Jack, additional, Jabbour, Pascal, additional, Tjoumakaris, Stavropoula, additional, Gooch, M. Reid, additional, Rosenwasser, Robert H., additional, and Shah, Syed O., additional

Published
2020
Full Text
View/download PDF

50. Treatment of Acutely Ruptured Cerebral Aneurysms With the Woven EndoBridge Device: Experience Post-FDA Approval

Author

Al Saiegh, Fadi, primary, Hasan, David, additional, Mouchtouris, Nikolaos, additional, Zanaty, Mario, additional, Sweid, Ahmad, additional, Khanna, Omaditya, additional, Chalouhi, Nohra, additional, Ghosh, Ritam, additional, Tjoumakaris, Stavropoula, additional, Gooch, M Reid, additional, Rosenwasser, Robert, additional, and Jabbour, Pascal, additional

Published
2020
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results