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505 results on '"Gao, Wenli"'

4. Interactive Physically-Based Simulation of Roadheader Robot

Author

Hou, Shengzhe, Lu, Xinming, Gao, Wenli, Jiang, Shuai, and Zhang, Xingli

Subjects
Computer Science - Robotics, Computer Science - Graphics
Abstract

Roadheader is an engineering robot widely used in underground engineering and mining industry. Interactive dynamics simulation of roadheader is a fundamental problem in unmanned excavation and virtual reality training. However, current research is only based on traditional animation techniques or commercial game engines. There are few studies that apply real-time physical simulation of computer graphics to the field of roadheader robot. This paper aims to present an interactive physically-based simulation system of roadheader robot. To this end, an improved multibody simulation method based on generalized coordinates is proposed. First, our simulation method describes robot dynamics based on generalized coordinates. Compared to state-of-the-art methods, our method is more stable and accurate. Numerical simulation results showed that our method has significantly less error than the game engine in the same number of iterations. Second, we adopt the symplectic Euler integrator instead of the conventional fourth-order Runge-Kutta (RK4) method for dynamics iteration. Compared with other integrators, our method is more stable in energy drift during long-term simulation. The test results showed that our system achieved real-time interaction performance of 60 frames per second (fps). Furthermore, we propose a model format for geometric and robotics modeling of roadheaders to implement the system. Our interactive simulation system of roadheader meets the requirements of interactivity, accuracy and stability.

Published
2022
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32. The comparative efficacy and safety of factor Xa inhibitors and warfarin for primary thromboprophylaxis in multiple myeloma patients undergoing immunomodulatory therapy.

Author

Chang, Yu‐Cheng, Song, Junmin, Chi, Kuan‐Yu, Gao, Wenli, Chang, Yu, Chiang, Cho‐Hung, Hsia, Yuan Ping, and Chiang, Cho‐Han

Subjects
VENOUS thrombosis, MULTIPLE myeloma, SAFETY factor in engineering, WARFARIN, GASTROINTESTINAL hemorrhage
Abstract

Summary: There are limited data on the optimal choice of anticoagulation in multiple myeloma (MM) patients receiving immunomodulatory drugs (IMiDs). We conducted a propensity score‐matched cohort study using the TriNetX database to compare the efficacy and safety of factor Xa inhibitors and warfarin in this patient population. Compared to warfarin, factor Xa inhibitors had a similar risk of deep vein thrombosis (hazard ratio [HR]: 1.11 [95% CI: 0.50–2.46]) or pulmonary embolism (HR: 1.08 [95% CI: 0.59–2.00]). There were no differences in the risk of gastrointestinal or intracranial bleeding. Factor Xa inhibitor‐treated patients had lower all‐cause mortality (HR: 0.56 [95% CI: 0.36–0.86]) compared with warfarin. These data suggest that factor Xa inhibitors had similar safety and efficacy compared with warfarin for MM patients on IMiDs. [ABSTRACT FROM AUTHOR]

Published
2024
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38. Cross-Comparison of Ocean Color Products Derived from Tiangong-2/WIS and GOCI in the Yangtze Estuary, China

Author

Tang, Rugang, Shen, Fang, Pan, Yanqun, Liu, Kang, Li, Mengyu, Gao, Wenli, Zang, Chuankai, 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, Ruediger, 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, Liang, Qilian, 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, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zhang, Junjie James, Series Editor, Gu, Yidong, editor, Gao, Ming, editor, and Zhao, Guangheng, editor

Published
2019
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