Search

Your search keyword '"Chen, Anqi"' showing total 1,248 results
Start Over Author "Chen, Anqi"
1,248 results on '"Chen, Anqi"'

1. Cross-subject Brain Functional Connectivity Analysis for Multi-task Cognitive State Evaluation

Author

Chen, Jun, Chen, Anqi, Jiang, Bingkun, Obaidat, Mohammad S., Li, Ni, and Zhang, Xinyu

Subjects
Computer Science - Human-Computer Interaction, Computer Science - Artificial Intelligence
Abstract

Cognition refers to the function of information perception and processing, which is the fundamental psychological essence of human beings. It is responsible for reasoning and decision-making, while its evaluation is significant for the aviation domain in mitigating potential safety risks. Existing studies tend to use varied methods for cognitive state evaluation yet have limitations in timeliness, generalisation, and interpretability. Accordingly, this study adopts brain functional connectivity with electroencephalography signals to capture associations in brain regions across multiple subjects for evaluating real-time cognitive states. Specifically, a virtual reality-based flight platform is constructed with multi-screen embedded. Three distinctive cognitive tasks are designed and each has three degrees of difficulty. Thirty subjects are acquired for analysis and evaluation. The results are interpreted through different perspectives, including inner-subject and cross-subject for task-wise and gender-wise underlying brain functional connectivity. Additionally, this study incorporates questionnaire-based, task performance-based, and physiological measure-based approaches to fairly label the trials. A multi-class cognitive state evaluation is further conducted with the active brain connections. Benchmarking results demonstrate that the identified brain regions have considerable influences in cognition, with a multi-class accuracy rate of 95.83% surpassing existing studies. The derived findings bring significance to understanding the dynamic relationships among human brain functional regions, cross-subject cognitive behaviours, and decision-making, which have promising practical application values.

Published
2024

6. Concurrent inhibition of oncogenic and wild-type RAS-GTP for cancer therapy

Author

Holderfield, Matthew, Lee, Bianca J., Jiang, Jingjing, Tomlinson, Aidan, Seamon, Kyle J., Mira, Alessia, Patrucco, Enrico, Goodhart, Grace, Dilly, Julien, Gindin, Yevgeniy, Dinglasan, Nuntana, Wang, Yingyun, Lai, Lick Pui, Cai, Shurui, Jiang, Lingyan, Nasholm, Nicole, Shifrin, Nataliya, Blaj, Cristina, Shah, Harshit, Evans, James W., Montazer, Nilufar, Lai, Oliver, Shi, Jade, Ahler, Ethan, Quintana, Elsa, Chang, Stephanie, Salvador, Anthony, Marquez, Abby, Cregg, Jim, Liu, Yang, Milin, Anthony, Chen, Anqi, Ziv, Tamar Bar, Parsons, Dylan, Knox, John E., Klomp, Jennifer E., Roth, Jennifer, Rees, Matthew, Ronan, Melissa, Cuevas-Navarro, Antonio, Hu, Feng, Lito, Piro, Santamaria, David, Aguirre, Andrew J., Waters, Andrew M., Der, Channing J., Ambrogio, Chiara, Wang, Zhengping, Gill, Adrian L., Koltun, Elena S., Smith, Jacqueline A. M., Wildes, David, and Singh, Mallika

Published
2024
Full Text
View/download PDF

7. Runtime Stealthy Perception Attacks against DNN-based Adaptive Cruise Control Systems

Author

Zhou, Xugui, Chen, Anqi, Kouzel, Maxfield, Ren, Haotian, McCarty, Morgan, Nita-Rotaru, Cristina, and Alemzadeh, Homa

Subjects
Computer Science - Cryptography and Security, Computer Science - Computer Vision and Pattern Recognition, Computer Science - Machine Learning
Abstract

Adaptive Cruise Control (ACC) is a widely used driver assistance technology for maintaining the desired speed and safe distance to the leading vehicle. This paper evaluates the security of the deep neural network (DNN) based ACC systems under runtime stealthy perception attacks that strategically inject perturbations into camera data to cause forward collisions. We present a context-aware strategy for the selection of the most critical times for triggering the attacks and a novel optimization-based method for the adaptive generation of image perturbations at runtime. We evaluate the effectiveness of the proposed attack using an actual vehicle, a publicly available driving dataset, and a realistic simulation platform with the control software from a production ACC system, a physical-world driving simulator, and interventions by the human driver and safety features such as Advanced Emergency Braking System (AEBS). Experimental results show that the proposed attack achieves 142.9 times higher success rate in causing hazards and 89.6% higher evasion rate than baselines, while being stealthy and robust to real-world factors and dynamic changes in the environment. This study highlights the role of human drivers and basic safety mechanisms in preventing attacks., Comment: 19 pages, 23 figures, 11 tables

Published
2023

8. Intensity Augmented Solid-State-LiDAR-Inertial SLAM

Author

Zhao, Chunhui, Li, Jiaxing, Chen, Anqi, Lyu, Yang, Hua, Lin, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Tan, Kay Chen, Series Editor, Qu, Yi, editor, Gu, Mancang, editor, Niu, Yifeng, editor, and Fu, Wenxing, editor

Published
2024
Full Text
View/download PDF

9. An Adaptive Robust Filter for GNSS/INS Integrated Navigation System

Author

Zhao, Chunhui, Chen, Anqi, Hua, Lin, Lyu, Yang, Li, Yanbo, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Tan, Kay Chen, Series Editor, Qu, Yi, editor, Gu, Mancang, editor, Niu, Yifeng, editor, and Fu, Wenxing, editor

Published
2024
Full Text
View/download PDF

13. List of contributors

Author

Chen, Anqi, primary, Chen, Min, additional, Cheng, Cheng, additional, Chu, Ju, additional, Deng, Jianjun, additional, Fan, Daidi, additional, Fan, Jianqiang, additional, Fu, Bixia, additional, Gao, Gengrong, additional, He, Siwei, additional, Li, Tian, additional, Lu, Hongzhong, additional, Mohsin, Ali, additional, Niu, Wenhui, additional, Pu, Jianyu, additional, Qu, Lingbo, additional, Qu, Linlin, additional, Wang, Guan, additional, Wang, Lei, additional, Wang, Xueting, additional, Wei, Tao, additional, Wei, Yongjun, additional, Xia, Jianye, additional, Xia, Yanan, additional, Xu, Xia, additional, Xu, Yameng, additional, Yu, Jie, additional, Yuan, Jifeng, additional, Zeng, Jiapeng, additional, Zhang, Heping, additional, Zhang, Siliang, additional, Zhang, Wenyi, additional, Zhang, Xiaoling, additional, Zhang, Yonglin, additional, and Zhuang, Yingping, additional

Published
2024
Full Text
View/download PDF

16. Spatial-Temporal Differentiation Patterns and Driving Mechanisms of Residential Housing Conditions in Medium-Sized Cities: A Case Study of Zhaoqing City

Author

Liu Ye, Chen Anqi, Liu Huayang, and Feng Zhixin

Subjects
housing condition, medium-sized cities, information entropy, national population census, zhaoqing city, Geography (General), G1-922
Abstract

Academic circles have long ignored the problems of inadequate and unbalanced housing development in medium-sized cities. Based on data from the sixth and seventh national population censuses of Zhaoqing City, this study constructed the resident housing evaluation system focusing on four sub-systems: construction age, building structure, per capita floor area, and housing living facilities. Through global and local spatial autocorrelation analyses, the spatial-temporal differentiation pattern of residents' housing conditions in Zhaoqing City from 2010 to 2020 was described. An OLS regression model was used to identify the influencing factors of the comprehensive score of residents' housing conditions, revealing the driving mechanisms of the evolution of the spatial pattern of housing conditions. The results show that 1) From 2010 to 2020, the spatial difference characteristics of the housing conditions of residents in Zhaoqing City showed obvious changes, with the high score area shifting from southeast to northwest. 2) The housing conditions of residents showed significant spatial agglomeration characteristics. The spatial agglomeration degree of the overall housing condition score did not change much in the past 10 years, while the spatial agglomeration degree of the construction age, building structure, and housing living facilities scores decreased significantly. 3) In 2020, the housing conditions of urban residents and rural residents presented different spatial differentiation patterns. The per capita floor area subsystem of rural housing dominates the spatial differentiation pattern of housing conditions for all residents in the city. 4) Regarding driving mechanisms, early urban forms constitute the historical basis of the spatial pattern of housing conditions in Zhaoqing City. Government policies and planning are the key driving forces shaping the evolution of spatial patterns, and the filtering effect of the housing market further strengthens the established spatial pattern. Based on these findings, the study proposes the following policy implications for Zhaoqing City: 1) Accelerate the upgrading of the industrial structure and new type urbanization construction, and encourage the city's agricultural migrant population and migrant workers to find jobs and settle down in the central city, development zone, and county; 2) Increase the supply of affordable housing with better housing quality in Zhaoqing New District and High-tech Zone to attract and retain highly skilled talents and college graduates; 3) Control the supply scale of residential land in the New District and High-tech Zone, increase the supply scale of industrial land, and expedite the introduction of strategic industries; 4) Conduct micro-transformations of old residential areas in the old urban areas, upgrade infrastructure and indoor living facilities, and improve the quality of the living environment. This study discusses the evolution trend and driving mechanisms of the spatial differentiation of housing conditions in small- and medium-sized cities and offers policy implications to comprehensively improve the housing conditions of Zhaoqing residents based on local conditions. This has significant reference value for promoting the optimization of housing conditions in small- and medium-sized cities and improving the overall living conditions of citizens.

Published
2024
Full Text
View/download PDF

17. Facile design of PTFE-kaolin-based ternary nanocomposite as a hydrophobic and high corrosion-barrier coating

Author

Chen Anqi, Zhao Yan, Chen Hongda, Ma Huachao, and Lv Kuilin

Subjects
metal corrosion, ptfe, hydrophobic, anticorrosive coatings, Technology, Chemical technology, TP1-1185
Abstract

Superhydrophobic nanostructured coatings are a promising technology in construction engineering. This study developed a hydrophobic film through a simple mixing method, utilizing kaolin and polytetrafluoroethylene as additive particles, 1H,1H,2H,2H-perfluoro-decyl triethoxysilane as a modifier, and epoxide resin and polyamide curing agent as adhesives. By controlling variables, it was determined that the C1P0.2EP coating immersed in a 3.5 wt% NaCl solution for 1, 3, and 7 days exhibited the maximum impedance radii of 47,373, 20,334, and 1,982 Ω·cm2, respectively. It also demonstrated the highest Bode modulus values, the largest E corr, and the smallest I corr. Furthermore, after 300 h in a salt spray chamber with a 3.5 wt% NaCl solution, the C1P0.2EP coating showed no rust spots or bubbles, demonstrating its excellent corrosion resistance. Moreover, wear resistance tests and self-cleaning experiments were conducted on the C1P0.2EP coating. The results showed that after 100 friction cycles, the surface exhibited no visible scratches, and the contact angle of the coating decreased by only 4°. Additionally, neither soil particles nor dirty water adhered to the coating, indicating that the C1P0.2EP hydrophobic coating possesses not only excellent corrosion resistance but also superior wear resistance and self-cleaning capabilities.

Published
2024
Full Text
View/download PDF

30. Communicating Inferred Goals with Passive Augmented Reality and Active Haptic Feedback

Author

Mullen Jr, James F., Mosier, Josh, Chakrabarti, Sounak, Chen, Anqi, White, Tyler, and Losey, Dylan P.

Subjects
Computer Science - Robotics
Abstract

Robots learn as they interact with humans. Consider a human teleoperating an assistive robot arm: as the human guides and corrects the arm's motion, the robot gathers information about the human's desired task. But how does the human know what their robot has inferred? Today's approaches often focus on conveying intent: for instance, upon legible motions or gestures to indicate what the robot is planning. However, closing the loop on robot inference requires more than just revealing the robot's current policy: the robot should also display the alternatives it thinks are likely, and prompt the human teacher when additional guidance is necessary. In this paper we propose a multimodal approach for communicating robot inference that combines both passive and active feedback. Specifically, we leverage information-rich augmented reality to passively visualize what the robot has inferred, and attention-grabbing haptic wristbands to actively prompt and direct the human's teaching. We apply our system to shared autonomy tasks where the robot must infer the human's goal in real-time. Within this context, we integrate passive and active modalities into a single algorithmic framework that determines when and which type of feedback to provide. Combining both passive and active feedback experimentally outperforms single modality baselines; during an in-person user study, we demonstrate that our integrated approach increases how efficiently humans teach the robot while simultaneously decreasing the amount of time humans spend interacting with the robot. Videos here: https://youtu.be/swq_u4iIP-g, Comment: 8 pages, 5 figures

Published
2021
Full Text
View/download PDF

46. A Novel Angle Measuring Method for 2D Digital Array Radars

Author

Chen, Anqi, Zhu, Yuzhu, Zhang, Haihui, Wu, Shiming, Liu, Xu, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Wang, Wei, editor, Liu, Xin, editor, Na, Zhenyu, editor, and Zhang, Baoju, editor

Published
2023
Full Text
View/download PDF

47. Performance Evaluation Model of Human-Machine Interactions for UAV Cluster Attack

Author

Chen, Anqi, Bai, Wenbo, Chen, Jun, Xie, Feng, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Fu, Wenxing, editor, Gu, Mancang, editor, and Niu, Yifeng, editor

Published
2023
Full Text
View/download PDF

48. Qualitative Study of a Class of Exponential Difference Equations with Periodic Coefficient

Author

Chen, Anqi, Liu, Jing, Shen, Penghui, Wu, Kaisu, Ceccarelli, Marco, Series Editor, Agrawal, Sunil K., Advisory Editor, Corves, Burkhard, Advisory Editor, Glazunov, Victor, Advisory Editor, Hernández, Alfonso, Advisory Editor, Huang, Tian, Advisory Editor, Jauregui Correa, Juan Carlos, Advisory Editor, Takeda, Yukio, Advisory Editor, and Dai, Honghua, editor

Published
2023
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results