Journal of Zhejiang University SCIENCE C

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An anthropomorphic controlled hand prosthesis system
Journal of Zhejiang University SCIENCE C - Tập 13 - Trang 769-780 - 2012
Hai Huang, Hong Liu, Nan Li, Li Jiang, Da-peng Yang, Lei Wan, Yong-jie Pang, Gerd Hirzinger
Based on HIT/DLR (Harbin Institute of Technology/Deutsches Zentrum für Luft- und Raumfahrt) Prosthetic Hand II, an anthropomorphic controller is developed to help the amputees use and perceive the prosthetic hands more like people with normal physiological hands. The core of the anthropomorphic controller is a hierarchical control system. It is composed of a top controller and a low level controll...... hiện toàn bộ
A ranking SVM based fusion model for cross-media meta-search engine
Journal of Zhejiang University SCIENCE C - Tập 11 - Trang 903-910 - 2010
Ya-li Cao, Tie-jun Huang, Yong-hong Tian
Recently, we designed a new experimental system MSearch, which is a cross-media meta-search system built on the database of the WikipediaMM task of ImageCLEF 2008. For a meta-search engine, the kernel problem is how to merge the results from multiple member search engines and provide a more effective rank list. This paper deals with a novel fusion model employing supervised learning. Our fusion mo...... hiện toàn bộ
Time-dependent changes in eye-specific segregation in the dorsal lateral geniculate nucleus and superior colliculus of postnatal mice
Journal of Zhejiang University SCIENCE C - Tập 15 - Trang 807-812 - 2014
Yu-qing Chen, Yu-pu Diao, Jing-gang Duan, Li-yuan Cui, Jia-yi Zhang
Eye-specific segregation in the dorsal lateral geniculate nucleus (dLGN) and superior colliculus (SC) starts from the embryonic stage and continues to develop postnatally until eye-opening in mice. However, there have been few systematic studies on the details of this developmental process. Here, we carried out time-dependent studies of eye-specific segregation in the dLGN and SC. Our results demo...... hiện toàn bộ
Examination of the wavelet-based approach for measuring self-similarity of epileptic electroencephalogram data
Journal of Zhejiang University SCIENCE C - Tập 15 - Trang 1147-1153 - 2014
Suparerk Janjarasjitt
Self-similarity or scale-invariance is a fascinating characteristic found in various signals including electroencephalogram (EEG) signals. A common measure used for characterizing self-similarity or scale-invariance is the spectral exponent. In this study, a computational method for estimating the spectral exponent based on wavelet transform was examined. A series of Daubechies wavelet bases with ...... hiện toàn bộ
Control of cascading failures in coupled map lattices based on adaptive predictive pinning control
Journal of Zhejiang University SCIENCE C - - 2011
Zhejing Bao, Gang Wu, Wenjun Yan
A 31–45.5 GHz injection-locked frequency divider in 90-nm CMOS technology
Journal of Zhejiang University SCIENCE C - Tập 15 - Trang 1183-1189 - 2014
Fa-en Liu, Zhi-gong Wang, Zhi-qun Li, Qin Li, Lu Tang, Ge-liang Yang
We present a 31–45.5 GHz injection-locked frequency divider (ILFD) implemented in a standard 90-nm CMOS process. To reduce parasitic capacitance and increase the operating frequency, an NMOS-only cross-coupled pair is adopted to provide negative resistance. Acting as an adjustable resistor, an NMOS transistor with a tunable gate bias voltage is connected to the differential output terminals for lo...... hiện toàn bộ
Design and implementation of the highly-reliable, low-cost housekeeping system in the ZDPS-1A pico-satellite
Journal of Zhejiang University SCIENCE C - Tập 13 - Trang 83-89 - 2012
Yu Zhang, Yang-ming Zheng, Mu Yang, Hui Li, Zhong-he Jin
The ZDPS-1A pico-satellite designed in Zhejiang University with a mass of 3.5 kg and a power consumption of less than 3.5 W is the smallest satellite in China up to now. The housekeeping system (HKS) is the core part of ZDPS-1A. The reliability of HKS has an important influence on the safety of the satellite. Traditional fault-tolerant methods do not apply to ZDPS-1A due to such pico-satellite cha...... hiện toàn bộ
Folded down-conversion mixer for a 60 GHz receiver architecture in 65-nm CMOS technology
Journal of Zhejiang University SCIENCE C - Tập 15 - Trang 1190-1199 - 2014
Najam Muhammad Amin, Zhi-gong Wang, Zhi-qun Li
We present the design of a folded down-conversion mixer which is incorporated at the final down-conversion stage of a 60 GHz receiver. The mixer employs an ac-coupled current reuse transconductance stage. It performs well under low supply voltages, and is less sensitive to temperature variations and process spread. The mixer operates at an input radio frequency (RF) band ranging from 10.25 to 13.7...... hiện toàn bộ
Partial discharge diagnostics in wind turbine insulation
Journal of Zhejiang University SCIENCE C - Tập 12 - Trang 515-522 - 2011
Michael G. Danikas, Athanasios Karlis
The purpose of this paper is to review work undertaken on partial discharges and their influence on the insulation of wind turbines. No matter whether partial discharges can be considered as the main cause of deterioration of the insulation material, the initial cause of failure or not but an indication of the material degradation, there is no doubt that they are intimately linked to the aging of ...... hiện toàn bộ
Anadvanced integrated framework for moving object tracking
Journal of Zhejiang University SCIENCE C - Tập 15 - Trang 861-877 - 2014
Gwang-Min Choe, Tian-jiang Wang, Fang Liu, Chun-Hwa Choe, Hyo-Son So, Chol-Ung Pak
This paper first introduces the concept of a geogram that captures richer features to represent the objects. The spatiogram contains some moments upon the coordinates of the pixels corresponding to each bin, while the geogram contains information about the perimeter of grouped regions in addition to features in the spatiogram. Then we consider that a convergence process of mean shift is divided in...... hiện toàn bộ
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