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1,462 results on '"Wu, Yuzhe"'

2. Memory-based Controllers for Efficient Data-driven Control of Soft Robots

Author

Wu, Yuzhe and Nekouei, Ehsan

Subjects
Computer Science - Robotics
Abstract

Controller design for soft robots is challenging due to nonlinear deformation and high degrees of freedom of flexible material. The data-driven approach is a promising solution to the controller design problem for soft robots. However, the existing data-driven controller design methods for soft robots suffer from two drawbacks: (i) they require excessively long training time, and (ii) they may result in potentially inefficient controllers. This paper addresses these issues by developing two memory-based controllers for soft robots that can be trained in a data-driven fashion: the finite memory controller (FMC) approach and the long short-term memory (LSTM) based approach. An FMC stores the tracking errors at different time instances and computes the actuation signal according to a weighted sum of the stored tracking errors. We develop three reinforcement learning algorithms for computing the optimal weights of an FMC using the Q-learning, soft actor-critic, and deterministic policy gradient (DDPG) methods. An LSTM-based controller is composed of an LSTM network where the inputs of the network are the robot's desired configuration and current configuration. The LSTM network computes the required actuation signal for the soft robot to follow the desired configuration. We study the performance of the proposed approaches in controlling a soft finger where, as benchmarks, we use the existing reinforcement learning (RL) based controllers and proportional-integral-derivative (PID) controllers. Our numerical results show that the training time of the proposed memory-based controllers is significantly shorter than that of the classical RL-based controllers. Moreover, the proposed controllers achieve a smaller tracking error compared with the classical RL algorithms and the PID controller.

Published
2023

3. Perceptual Quality Assessment for Digital Human Heads

Author

Zhang, Zicheng, Zhou, Yingjie, Sun, Wei, Min, Xiongkuo, Wu, Yuzhe, and Zhai, Guangtao

Subjects
Computer Science - Computer Vision and Pattern Recognition, Electrical Engineering and Systems Science - Image and Video Processing
Abstract

Digital humans are attracting more and more research interest during the last decade, the generation, representation, rendering, and animation of which have been put into large amounts of effort. However, the quality assessment of digital humans has fallen behind. Therefore, to tackle the challenge of digital human quality assessment issues, we propose the first large-scale quality assessment database for three-dimensional (3D) scanned digital human heads (DHHs). The constructed database consists of 55 reference DHHs and 1,540 distorted DHHs along with the subjective perceptual ratings. Then, a simple yet effective full-reference (FR) projection-based method is proposed to evaluate the visual quality of DHHs. The pretrained Swin Transformer tiny is employed for hierarchical feature extraction and the multi-head attention module is utilized for feature fusion. The experimental results reveal that the proposed method exhibits state-of-the-art performance among the mainstream FR metrics. The database is released at https://github.com/zzc-1998/DHHQA.

Published
2022

4. Mining Cross-Person Cues for Body-Part Interactiveness Learning in HOI Detection

Author

Wu, Xiaoqian, Li, Yong-Lu, Liu, Xinpeng, Zhang, Junyi, Wu, Yuzhe, and Lu, Cewu

Subjects
Computer Science - Computer Vision and Pattern Recognition
Abstract

Human-Object Interaction (HOI) detection plays a crucial role in activity understanding. Though significant progress has been made, interactiveness learning remains a challenging problem in HOI detection: existing methods usually generate redundant negative H-O pair proposals and fail to effectively extract interactive pairs. Though interactiveness has been studied in both whole body- and part- level and facilitates the H-O pairing, previous works only focus on the target person once (i.e., in a local perspective) and overlook the information of the other persons. In this paper, we argue that comparing body-parts of multi-person simultaneously can afford us more useful and supplementary interactiveness cues. That said, to learn body-part interactiveness from a global perspective: when classifying a target person's body-part interactiveness, visual cues are explored not only from herself/himself but also from other persons in the image. We construct body-part saliency maps based on self-attention to mine cross-person informative cues and learn the holistic relationships between all the body-parts. We evaluate the proposed method on widely-used benchmarks HICO-DET and V-COCO. With our new perspective, the holistic global-local body-part interactiveness learning achieves significant improvements over state-of-the-art. Our code is available at https://github.com/enlighten0707/Body-Part-Map-for-Interactiveness., Comment: To appear in ECCV 2022

Published
2022

8. On Optimization of Industrial Land Transfer Procedure: A Case Study of the Standard Land in Deqing of China

Author

Zhu, Huiqiong, Bao, Haijun, Wu, Yuzhe, Barbosa-Povoa, Ana Paula, Editorial Board Member, de Almeida, Adiel Teixeira, Editorial Board Member, Gans, Noah, Editorial Board Member, Gupta, Jatinder N. D., Editorial Board Member, Heim, Gregory R., Editorial Board Member, Hua, Guowei, Editorial Board Member, Kimms, Alf, Editorial Board Member, Li, Xiang, Editorial Board Member, Masri, Hatem, Editorial Board Member, Nickel, Stefan, Editorial Board Member, Qiu, Robin, Editorial Board Member, Shankar, Ravi, Editorial Board Member, Slowiński, Roman, Editorial Board Member, Tang, Christopher S., Editorial Board Member, Wu, Yuzhe, Editorial Board Member, Zhu, Joe, Editorial Board Member, Zopounidis, Constantin, Editorial Board Member, Guo, Hongling, editor, Fang, Dongping, editor, Lu, Weisheng, editor, and Peng, Yi, editor

Published
2022
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9. Elasticity of Substitution Between Capital and Land in Housing Market, the Case of Xi’an, China

Author

Zhang, Chengjie, Zheng, Sheng, Wu, Yuzhe, Barbosa-Povoa, Ana Paula, Editorial Board Member, de Almeida, Adiel Teixeira, Editorial Board Member, Gans, Noah, Editorial Board Member, Gupta, Jatinder N. D., Editorial Board Member, Heim, Gregory R., Editorial Board Member, Hua, Guowei, Editorial Board Member, Kimms, Alf, Editorial Board Member, Li, Xiang, Editorial Board Member, Masri, Hatem, Editorial Board Member, Nickel, Stefan, Editorial Board Member, Qiu, Robin, Editorial Board Member, Shankar, Ravi, Editorial Board Member, Slowiński, Roman, Editorial Board Member, Tang, Christopher S., Editorial Board Member, Wu, Yuzhe, Editorial Board Member, Zhu, Joe, Editorial Board Member, Zopounidis, Constantin, Editorial Board Member, Guo, Hongling, editor, Fang, Dongping, editor, Lu, Weisheng, editor, and Peng, Yi, editor

Published
2022
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10. Study on the Relationship Between Built-Up Area and PM2.5 Concentration in Jiangsu Province

Author

Fu, Yuyuan, Zheng, Sheng, Wu, Yuzhe, Barbosa-Povoa, Ana Paula, Editorial Board Member, de Almeida, Adiel Teixeira, Editorial Board Member, Gans, Noah, Editorial Board Member, Gupta, Jatinder N. D., Editorial Board Member, Heim, Gregory R., Editorial Board Member, Hua, Guowei, Editorial Board Member, Kimms, Alf, Editorial Board Member, Li, Xiang, Editorial Board Member, Masri, Hatem, Editorial Board Member, Nickel, Stefan, Editorial Board Member, Qiu, Robin, Editorial Board Member, Shankar, Ravi, Editorial Board Member, Slowiński, Roman, Editorial Board Member, Tang, Christopher S., Editorial Board Member, Wu, Yuzhe, Editorial Board Member, Zhu, Joe, Editorial Board Member, Zopounidis, Constantin, Editorial Board Member, Guo, Hongling, editor, Fang, Dongping, editor, Lu, Weisheng, editor, and Peng, Yi, editor

Published
2022
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11. The Openness of China's Gated Communities from the Reflective Perspective of Border Vacuums

Author

Lu, Wenzheng, Wu, Yuzhe, Barbosa-Povoa, Ana Paula, Editorial Board Member, de Almeida, Adiel Teixeira, Editorial Board Member, Gans, Noah, Editorial Board Member, Gupta, Jatinder N. D., Editorial Board Member, Heim, Gregory R., Editorial Board Member, Hua, Guowei, Editorial Board Member, Kimms, Alf, Editorial Board Member, Li, Xiang, Editorial Board Member, Masri, Hatem, Editorial Board Member, Nickel, Stefan, Editorial Board Member, Qiu, Robin, Editorial Board Member, Shankar, Ravi, Editorial Board Member, Slowiński, Roman, Editorial Board Member, Tang, Christopher S., Editorial Board Member, Wu, Yuzhe, Editorial Board Member, Zhu, Joe, Editorial Board Member, Zopounidis, Constantin, Editorial Board Member, Guo, Hongling, editor, Fang, Dongping, editor, Lu, Weisheng, editor, and Peng, Yi, editor

Published
2022
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12. Dilemmas, Directions and Paths of Macrocosm Urbanization in Zhejiang Province: An Analysis Framework Based on Agglomeration Index

Author

Ren, Yuhang, Wu, Yuzhe, Barbosa-Povoa, Ana Paula, Editorial Board Member, de Almeida, Adiel Teixeira, Editorial Board Member, Gans, Noah, Editorial Board Member, Gupta, Jatinder N. D., Editorial Board Member, Heim, Gregory R., Editorial Board Member, Hua, Guowei, Editorial Board Member, Kimms, Alf, Editorial Board Member, Li, Xiang, Editorial Board Member, Masri, Hatem, Editorial Board Member, Nickel, Stefan, Editorial Board Member, Qiu, Robin, Editorial Board Member, Shankar, Ravi, Editorial Board Member, Slowiński, Roman, Editorial Board Member, Tang, Christopher S., Editorial Board Member, Wu, Yuzhe, Editorial Board Member, Zhu, Joe, Editorial Board Member, Zopounidis, Constantin, Editorial Board Member, Guo, Hongling, editor, Fang, Dongping, editor, Lu, Weisheng, editor, and Peng, Yi, editor

Published
2022
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13. On Position of Future Community Construction in China

Author

Wu, Chunting, Wu, Yuzhe, Barbosa-Povoa, Ana Paula, Editorial Board Member, de Almeida, Adiel Teixeira, Editorial Board Member, Gans, Noah, Editorial Board Member, Gupta, Jatinder N. D., Editorial Board Member, Heim, Gregory R., Editorial Board Member, Hua, Guowei, Editorial Board Member, Kimms, Alf, Editorial Board Member, Li, Xiang, Editorial Board Member, Masri, Hatem, Editorial Board Member, Nickel, Stefan, Editorial Board Member, Qiu, Robin, Editorial Board Member, Shankar, Ravi, Editorial Board Member, Slowiński, Roman, Editorial Board Member, Tang, Christopher S., Editorial Board Member, Wu, Yuzhe, Editorial Board Member, Zhu, Joe, Editorial Board Member, Zopounidis, Constantin, Editorial Board Member, Guo, Hongling, editor, Fang, Dongping, editor, Lu, Weisheng, editor, and Peng, Yi, editor

Published
2022
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40. A micro‐nanohierarchical composite fabric for efficient water transport and outstanding flame retardancy.

Author

Wu, Yuzhe, Su, Qing, Gong, Ao, Zhu, Chuanren, Long, Shengru, Yang, Jie, Wang, Xiaojun, and Wei, Zhimei

Subjects
FIREPROOFING, FLAMMABILITY, CONTACT angle, FIRE prevention, TEXTILES, THERMAL stability, COMPOSITE membranes (Chemistry), DOPAMINE receptors
Abstract

Textiles with outstanding moisture transport characteristics and excellent flammability is of vital importance for human beings. In this work, the poly(arylene sulfide sulfone)–polydopamine/polyphenylene sulfide–polydopamine/poly(arylene sulfide sulfone) (PASS‐PDA/PPS‐PDA/PASS) composite fibric with multigradient porous structures from macro to submicron levels prepared via micrometer and nanometer fibers for water transport and evaporation has been fabricated. The introduction of PDA can effectively improve the hydrophilicity of the composite membrane. Meanwhile, superhydrophobic PASS layer with beaded structure was obtained by electrospray as the inner layer. It is found that PASS‐PDA‐72 fabric exhibited outstanding water diffusion property (spreading diameter = 10.47 cm) and ultrafast the water evaporation (0.20 g h−1). Meanwhile, the beaded‐structure PASS fabrics with high hydrophobicity (water contact angle is 130°C) was selected to absorb water from the surface of human skin and transport it to the other side to evaporate quickly, giving the surface of human skin a comfortable and dry environment. What is more, the PASS‐PDA/PPS‐PDA/PASS composite membrane exhibited excellent thermal stability (Tdmax = 544°C) and flame retardancy, which will have potential for the application in the field of fire protection. [ABSTRACT FROM AUTHOR]

Published
2024
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48. Reflections on TOD in China: From land finance to inclusive growth

Author

Su, Yinxin, Wu, Yuzhe, Choguill, Charles L., Luo, Jiaojiao, and Yu, Xiaofen

Abstract

Transit-oriented development (TOD) is a sustainable land use planning tool based on land value-added capturing and urban quality improvements and has been vigorously promoted by Chinese city governments. However, few studies have been conducted on the role of the ‘land finance’ model and on people-oriented planning approach focusing on urban inclusive growth. This paper examines the current implementation of TOD in China and attempts to explore the approach to the paradigm transformation of urban development in China. Evidence from Hangzhou illustrates that the current land-centered and property-led urban rail transit construction, although contributing to the economic sustainability of ‘urban development strategy’, has led to unaffordable housing prices and failed to decentralize population away from downtown areas. This study highlights inclusive growth models which integrate TOD planning with affordable housing for the floating population, not only to ensure equity in housing affordability and space accessibility but also to promote polycentric urban development strategies. The locations of inclusive growth models include new towns/sub-cities, traditional cores and suburbs, which are all based on existing industrial cluster areas and promote the full utilization of existing public service facilities.

Published
2024
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