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| 1 | NeuroBiometric:An Eye Blink Based Biometric Authentication System Using an Event-Based Neuromorphic Vision Sensor显示文摘The rise of the Internet and identity authentication systems has brought convenience to people's lives but has also introduced the potential risk of privacy leaks.Existing biometric authentication systems based on explicit and static features bear the risk of being attacked by mimicked data.This work proposes a highly efficient biometric authentication system based on transient eye blink signals that are precisely captured by a neuromorphic vision sensor with microsecond-level temporal resolution.The neuromorphic vision sensor only transmits the local pixel-level changes induced by the eye blinks when they occur,which leads to advantageous characteristics such as an ultra-low latency response.We first propose a set of effective biometric features describing the motion,speed,energy and frequency signal of eye blinks based on the microsecond temporal resolution of event densities.We then train the ensemble model and non-ensemble model with our Neuro Biometric dataset for biometrics authentication.The experiments show that our system is able to identify and verify the subjects with the ensemble model at an accuracy of 0.948 and with the non-ensemble model at an accuracy of 0.925.The low false positive rates(about 0.002)and the highly dynamic features are not only hard to reproduce but also avoid recording visible characteristics of a user's appearance.The proposed system sheds light on a new path towards safer authentication using neuromorphic vision sensors. | Guang Chen Fa Wang Xiaoding Yuan Zhijun Li Zichen Liang Alois Knoll | 2021 | IEEE/CAA Journal of Automatica Sinica2021，8，1： | 3 |
| 2 | An efficient high-power femtosecond laser based on periodic-layered-Kerr media nonlinear compression and a Yb:YAG regenerative amplifier显示文摘We demonstrate an efficient ultrafast source with 195 fs pulse duration,54 W average power at 200 kHz repetition rate and near diffraction-limited beam quality.The compact setup incorporates a thin-disk Yb:YAG regenerative amplifier(RA)and a subsequent nonlinear pulse compression stage with periodic-layered Kerr media(PLKM),which is one of the multiple-thin-solid-plate schemes based on nonlinear resonator theory.In virtue of the formation of quasi-stationary spatial soliton in PLKM,the near diffraction-limited beam quality of the RA remained almost undisturbed after post-compression.The nonlinear pulse compression module is simple and efficient with a transmission of 96%.To the best our knowledge,for pulse energy over 200μJ,this is the highest output power reported for the multiple-thin-solid-plate scheme.This source manifests an economical combination to mitigate the bandwidth limitations of Yb-based high-power chirped pulse amplifiers. | Jie Guo Zichen Gao Di Sun Xiao Du Yongxi Gao Xiaoyan Liang | 2022 | High Power Laser Science and Engineering2022，10，2： | 1 |
| 3 | Effect of tip clearance on the heat transfer and pressure drop performance in the micro-reactor with micro-pin-fin arrays at low Reynolds number 显示文摘 | Mei Deqing Lou Xinyang Qian Miao Yao Zhehe Liang Lingwei Chen Zichen | 2014 | International Journal of Heat and Mass Transfer2014，70，： | 1 |
| 4 | Recommendations and Countermeasures for Building Beautiful Countryside in Jiangsu Province in the New Period显示文摘This paper firstly introduced overall condition of agricultural and rural economic development in Jiangsu Province,and analyzed restrictive factors and bottleneck in the process of new socialist countryside construction from policy,fund and understanding. There are many problems in the process of new socialist countryside construction,including no supply and management system for rural public service products,no agricultural ecological compensation mechanism,increasingly prominent rural hollowing and decline of passing on economic culture,lack of funds and technologies for new socialist countryside construction,and inadequate understanding of new socialist countryside construction. In line with these problems,it came up with recommendations and countermeasures for beautiful countryside construction in Jiangsu Province in the new period from government guidance,plan leading,industrial support,environmental improvement,innovation management and cultural cultivation. | Yongxiang GUAN Yonghong LIANG Hao WU Zichen WANG | 2014 | Asian Agricultural Research2014，6，3： | 0 |
| 5 | Study on Measures and Policies to Reduce Pollution in Raising Livestock and Poultry in Jiangsu Province显示文摘As a developed province in China,Jiangsu Province is competitive in the livestock and poultry production industry.With the development and growing intensity of livestock and poultry industry,animal pollution has become the major source of panel agricultural pollution.This paper studied the characteristics of livestock and poultry industry in Jiangsu Province:large amount of livestock poultry,imbalanced development of livestock and regional differences,large pollution,large amount of pollution emission,uneven distribution of livestock and great pressure on reducing pollution.Besides,the ways to deal with pollution in Jiangsu Province were analyzed:fertilizer accumulation,biogas process technology,animal stools disposal center,ferment bed technology,and comprehensive disposal technology.Governments'policies on pollution reduction were expounded.In the end,several suggestions were put forward,such as strengthening management,innovating treatment,intensifying governments'responsibility,enlarging financial input and creating favorable atmosphere to protect environment. | Yonghong LIANG Yongxiang GUAN Hao WU Zichen WANG | 2013 | Asian Agricultural Research2013，5，10： | 0 |
| 6 | Establishment of Small Centralized Collection Processing Service System of Scattered Farming Waste显示文摘In order to advance pollution control and promote agricultural source pollution reduction of Jiangsu Province,based on the practical experience of Lijia Livestock and Poultry Manure Processing Center in Wujin District,Changzhou City,Jiangsu Province,new ways of controlling small scattered livestock and poultry breeding pollution,with characteristics of'unified collection,centralized processing,social services,and comprehensive utilization',were discussed through establishing the collection processing service system,innovating operation system and mechanism,and transforming the mode of government supervision and management. | Bai Yanfei Wang Zichen Wu Hao Wang Haiqin Shen Jianning Wu Tianxiang Guan Yongxiang Liang Yonghong | 2015 | Meteorological and Environmental Research2015，6，4： | 0 |
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