Patch-guided facial image inpainting by shape propagationZhejiang University Press - Tập 10 - Trang 232-238 - 2009
Yue-ting Zhuang, Yu-shun Wang, Timothy K. Shih, Nick C. Tang
Images with human faces comprise an essential part in the imaging realm. Occlusion or damage in facial portions will bring a remarkable discomfort and information loss. We propose an algorithm that can repair occluded or damaged facial images automatically, named ‘facial image inpainting’. Inpainting is a set of image processing methods to recover missing image portions. We extend the image inpain...... hiện toàn bộ
On modal energy in civil structural controlZhejiang University Press - Tập 9 - Trang 878-887 - 2008
Miao Pang, Tie-jiong Lou, Ming Zhao
A new control strategy based on modal energy criterion is proposed to demonstrate the effectiveness of the control system in reducing structural earthquake responses. The modal control algorithm combining LQR (linear quadratic regulator) control algorithm is adopted in the discrete time-history analysis. The various modal energy forms are derived by definition of the generalized absolute displacem...... hiện toàn bộ
Structural damage identification using test static data based on grey system theoryZhejiang University Press - Tập 6 - Trang 790-796 - 2005
Xiao-zhen Chen, Zhu Hong-ping, Chen Chuan-yao
A new structural damage identification method using limited test static displacement based on grey system theory is proposed in this paper. The grey relation coefficient of displacement curvature is defined and used to locate damage in the structure, and an iterative estimation scheme for solving nonlinear optimization programming problems based on the quadratic programming technique is used to id...... hiện toàn bộ
Tăng cường truyền khối lượng trong quá trình khử oxi bằng màng sợi rỗng nhờ vào các dòng xoáy Dean Dịch bởi AI Zhejiang University Press - Tập 20 - Trang 601-613 - 2019
Qing-ran Kong, Yi-zhen Zhang, Hua Tian, Li-feng Fang, Ming-yong Zhou, Li-ping Zhu, Bao-ku Zhu
Bài báo này báo cáo một nghiên cứu mô hình hóa và thực nghiệm về việc tăng cường truyền khối lượng trong quá trình khử oxi nước bằng cách sử dụng màng sợi rỗng xoắn (HHFM) để tạo ra các dòng xoáy Dean. Các thí nghiệm cho thấy rằng tỷ lệ khử oxi của HHFM gấp đôi so với việc khử oxi bằng màng sợi rỗng thẳng. Một mô hình mới để miêu tả quá trình truyền khối lượng khử oxi của HHFM đã được phát triển b...... hiện toàn bộ
#khử oxi #màng sợi rỗng #dòng xoáy Dean #truyền khối lượng #tối ưu hóa
Filament geometrical model and nozzle trajectory analysis in the fused deposition modeling processZhejiang University Press - Tập 10 - Trang 370-376 - 2009
Yu-zhen Jin, Jia-fan Zhang, Ying Wang, Zu-chao Zhu
The geometrical model of the filament during the fused deposition modeling (FDM) process was firstly proposed based on three different models, tractrix, parabola, and catenary. Comparing with the actual measured filament curves on the Stratasys 1600 FDM machine, it is indicated that the tractrix model had the best agreement with the actual measured curves. With the analytical simulation, the nozzl...... hiện toàn bộ
Using pipette tips to readily generate spheroids comprising single or multiple cell typesZhejiang University Press - Tập 24 - Trang 875-885 - 2023
Rong Pan, Xiaoyan Yang, Shiming Wu, Yuanyuan Xie, Feng Chen, Ke Ning, Wei Sun, Ling Yu
Three-dimensional (3D) cell culture methods have been validated that can replicate the tumor environment in vivo to a large extent, providing an effective tool for studying tumors. In this study, we demonstrated the use of standard laboratory pipette tips as micro vessels for generating 3D cell spheroids. No microfabrication or wet-chemistry surface modifications were involved in the procedure. Sp...... hiện toàn bộ
Improved concept models for straight thin-walled columns with box cross sectionZhejiang University Press - Tập 9 - Trang 1473-1479 - 2008
Yu-cheng Liu
This paper focuses on developing improved concept models for straight thin-walled box sectional columns which can better predict the peak crushing force that occurs during crashworthiness analyses. We develop a nonlinear translational spring based on previous research and apply such a spring element to build the enhanced concept models. The work presented in this article is developed on the basis ...... hiện toàn bộ