Zhejiang University Press
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Patch-guided facial image inpainting by shape propagation
Zhejiang University Press - Tập 10 - Trang 232-238 - 2009
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......
Filament geometrical model and nozzle trajectory analysis in the fused deposition modeling process
Zhejiang University Press - Tập 10 - Trang 370-376 - 2009
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......
Interferometric measurement of an atomic wave function by using a standing wave method
Zhejiang University Press - - 2000
Improved concept models for straight thin-walled columns with box cross section
Zhejiang University Press - Tập 9 - Trang 1473-1479 - 2008
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 ......
Robust H ∞ output feedback control for a class of uncertain Lur’e systems with time-delays
Zhejiang University Press - Tập 5 - Trang 1114-1123 - 2004
In this work, the analysis of robust stability and design of robust H
∞ output feedback controllers for a class of Lur’e systems with both time-delays and parameter uncertainties were studied. A robust H
∞ output feedback controller based on Linear Matrix Inequalities (LMIs) was developed to guarantee the robust stability and H
∞ performance of the resultant closed-loop system. The presented desig......
Effects of Hg and Cu on the activities of soil acid phosphatase
Zhejiang University Press - Tập 8 - Trang 1157-1163 - 2007
Comparative study on the activity and kinectic properties of acid phosphatase (ACPase) of three soils amended with Hg and Cu at constant temperature and humidity was carried out. The results indicated that the inhibition on ACPase of the three sample soils by Hg and Cu varied with the content of soil organic matter and pH, where, Soil 1 was the most seriously contaminated due to its lowest content......
Free-Space Optical communication using visible light
Zhejiang University Press - Tập 8 - Trang 186-191 - 2007
The possibility of visible red light laser being used as signal light source for Free-Space Optical (FSO) communication is proposed. Based on analysis of transmission in atmospheric channel concerning 650 nm laser beam, performance of wireless laser communication link utilizing a low power red laser diode was evaluated. The proposed system can achieve a maximum range of 300 m at data rate 100 Mb/s......
Model tests on interaction between soil and geosynthetics subjected to localized subsidence in landfills
Zhejiang University Press - Tập 13 - Trang 433-444 - 2012
In a landfill, excessive tensile strains or failure of the liner system due to localized subsidence underneath the geosynthetic liner, is a concern in design and operation of the landfill. The localized subsidence can be commonly withstood by reinforcements such as geogrids. A total of nine model tests were carried out to study the influence of soil arching in overburden sandy soil on the geosynth......
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