5篇
您的检索式：作者名="FENG Xingle"
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| 1 | Maneuvering Target Tracking in Dense Clutter Based on Particle Filtering显示文摘An improved particle filtering(IPF) is presented to perform maneuvering target tracking in dense clutter.The proposed filter uses several efficient variance reduction methods to combat particle degeneracy,low mode prior probabilities and measure-ment-origin uncertainty.Within the framework of a hybrid state estimation,each particle samples a discrete mode from its poste-rior distribution and the continuous state variables are approximated by a multivariate Gaussian mixture that is updated by an unscented Kalman filtering(UKF).The uncertainty of measurement origin is solved by Monte Carlo probabilistic data associa-tion method where the distribution of interest is approximated by particle filtering and UKF.Correct data association and precise behavior mode detection are successfully achieved by the proposed method in the environment with heavy clutter and very low mode prior probability.The performance of the proposed filter is examined and compared by Monte Carlo simulation over typical target scenario for various clutter densities.The simulation results show the effectiveness of the proposed filter. | YANG Xiaojun XING Keyi FENG Xingle | 2011 | Chinese Journal of Aeronautics2011，24，2： | 8 |
| 2 | Solid-state NMR for metal-containing zeolites:from active sites to reaction mechanism显示文摘Metal-containing zeolite catalysts have found a wide range of applications in heterogeneous catalysis.To understand the nature of metal active sites and the reaction mechanism over such catalysts is of great importance for the establishment of structure-activity relationship.The advanced solid-state NMR(SSNMR)spectroscopy is robust in the study of zeolites and zeolite-catalyzed reactions.In this review,we summarize recent developments and applications of SSNMR for exploring the structure and property of active sites in metal-containing zeolites.Moreover,detailed information on host-guest interactions in the relevant zeolite catalysis obtained by SSNMR is also discussed.Finally,we highlight the mechanistic understanding of catalytic reactions on metal-containing zeolites based on the observation of key surface species and active intermediates. | Xingling Zhao Jun Xu Feng Deng | 2020 | Frontiers of Chemical Science and Engineering2020，14，2： | 3 |
| 3 | TRANSMIT ANTENNA SELECTION IN V-BLAST SYSTEM显示文摘In order to reduce the cost of Radio Frequency (RF) chains in the spatial multiplexing systems with Vertical-Bell Labs Layered Space-Time (V-BLAST) nonlinear receiver, a novel transmit antenna selection cri-terion is proposed with the motivation of minimizing the Vector Symbol Error Rate (VSER). In the proposed scheme, both the number of substreams and the mapping of substreams to antennas are dynamically adjusted based on the knowledge of channel. Simulation results illustrate that the proposed two-step selection criterion outperforms the existing eigenmode based selection criterion by 0.3dB at a VSER of 10?3. | Feng Xingle Zhu Shihua Ren Pinyi | 2006 | Journal of Electronics(China)2006，23，4： | 2 |
| 4 | Leachability of heavy metals from solidified sludge显示文摘Solidified sludge undergoes progressive depletion of the alkalinity materials under natural weathering condition and releases out of heavy metals. The leaching of heavy metals from solidified sewage sludge was studied by acid neutralization capacity (ANC) test and flow-through leaching test. The results of ANC test showed that heavy metals release at high concentration when the pH of extract lowers than 6. The disintegration of solidified sludge and the transformation of heavy metals are the main reasons for the resolubilisation of contaminants. Flow-through leaching test indicated that leaching of heavy metals from solidified sludge occurs in a slow way. A mathematical model has been developed to predict the stabilization time of heavy metals in solidified sludge. The research results showed that decreasing hydraulic conductivity is more important than cement addition for controlling the release of heavy metals from solidified sludge. | ZHANG HuYuan WANG Bao DONG XingLing FENG Lei FAN ZhiMing | 2009 | Science China(Technological Sciences)2009，52，7： | 1 |
| 5 | Analysis of the handling of ophthalmic surgical instruments in hospitals显示文摘Background:We investigated the procedures used by medical institutions in Guangdong Province for reprocessing ophthalmic surgical instruments and analyzed the problems identified in order to improve the quality of cleaning medical instruments and its management.Methods:The reprocessing of ophthalmic surgical instruments was investigated in 72 hospitals in Guangdong Province using a questionnaire designed for this purpose.Results:Ophthalmic surgical instruments underwent centralized reprocessing in the disinfection and supply centers in 50%of the 72 hospitals.Cataract phacoemulsification surgery was the main ophthalmic surgery performed in 94%of the 72 hospitals.The main reasons for using centralized reprocessing were an insufficient supply of ophthalmic surgical instruments,short turnaround times between surgeries,and the high cost of losing these precise and fragile instruments.Manual processing was the predominant method of reprocessing ophthalmic surgical instruments;enzyme detergents were used in 63.89%of the hospitals;and 48.61%of the hospitals used N-model small pressure-steam sterilizers for the ophthalmic surgical instruments.Conclusions:In order to improve the quality and management of the cleaning of medical instruments,and guarantee high-quality medical care,the following measures are recommended.Centralized management of ophthalmic surgical instruments should be based on the instruments’characteristics.Pay more attention to reprocessing site locations and staff training.Choose detergents based on manufacturers’instructions for use with specific instruments.Increase the number of available ophthalmic instruments in accordance with their demand and select appropriate small pressure-steam sterilizers. | Xingling Deng Chunmei Du Jiehui Huang Wenyuan Wang Xiulan Feng | 2019 | Annals of Eye Science2019，，1： | 0 |
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