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| 1 | MIMO radar space- using prolate spheroidal wave functions 显示文摘 | Chen C Y Vaidyanathan time adaptive processing P P | 2008 | IEEE Transaction on Signal Pro- cessing2008，56，2： | 1 |
| 2 | Astronomical function and date of the Taosi observatory显示文摘The Taosi site in Xiangfen County,Shanxi Province,may be the capital of the King Yao. Archeologists recently discovered a large semi-circular stamped-earth platform, II FJT1,which has a clear and definite pounded-earth central core together with a curved wall perforated by twelve gaps. The platform is said to be an ancient observatory used to determine the seasons by watching the sunrise. Each feature of II FJT1 was precisely measured and the data are reproduced in this paper. An astronomical analysis of slots E2 and E12 was carried out using the azimuths of the slots' centerlines and the vertical angle of the mountain ridge opposite, above which the sun rises. The results show that at present the sun is close to the two slots but does not exactly enter them at summer and winter solstice sunrise. Using 14C analysis archeologists dated the site to about 2100 BC. Because of the secular change in the obliquity of the ecliptic,at that date on the summer solstice the half-risen sun would have appeared inside slot E12 just to the right of the centerline,and on the winter solstice the sun would have been exactly on the centerline of slot E2. This result provides compelling proof that II FJT1 is an ancient observatory. | WU JiaBi1, CHEN MeiDong2 & LIU CiYuan3 1 National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China 2 Institute for the History of Natural Science, Chinese Academy of Sciences, Beijing 100010, China 3 National Time Service Center, Chinese Academy of Sciences, Xi’an 710600, China | 2009 | Science China(Physics,Mechanics & Astronomy)2009，52，1： | 1 |
| 3 | TLSmell: Direct Identification on Malicious HTTPs Encryption Traffic withSimple Connection-Specific Indicators显示文摘Internet traffic encryption is a very common traffic protection method.Most internet traffic is protected by the encryption protocol called transport layersecurity (TLS). Although traffic encryption can ensure the security of communication, it also enables malware to hide its information and avoid being detected.At present, most of the malicious traffic detection methods are aimed at the unencrypted ones. There are some problems in the detection of encrypted traffic, suchas high false positive rate, difficulty in feature extraction, and insufficient practicability. The accuracy and effectiveness of existing methods need to be improved.In this paper, we present TLSmell, a framework that conducts maliciousencrypted HTTPs traffic detection with simple connection-specific indicators byusing different classifiers based online training. We perform deep packet analysisof encrypted traffic through data pre-processing to extract effective features, andthen the online training algorithm is used for training and prediction. Withoutdecrypting the original traffic, high-precision malicious traffic detection and analysis are realized, which can guarantee user privacy and communication security.At the same time, since there is no need to decrypt the traffic in advance, the effi-ciency of detecting malicious HTTPs traffic will be greatly improved. Combinedwith the traditional detection and analysis methods, malicious HTTPs traffic isscreened, and suspicious traffic is further analyzed by the expert through the context of suspicious behaviors, thereby improving the overall performance of malicious encrypted traffic detection. | Zhengqiu Weng Timing Chen Tiantian Zhu Hang Dong Dan Zhou Osama Alfarraj | 2021 | Computer Systems Science & Engineering2021，37，4： | 1 |
| 4 | A novel aluminum-carbon nanotubes nanocomposite with doubled strength and preserved electrical conductivity显示文摘Enhancing the mechanical strength of highly conductive pure metals usually causes significant reduction in their electrical conductivity.For example,introducing phase/matrix interfaces or more grain boundaries,are common and effective methods to strengthen metals.But it simultaneously increases the electron scattering at the interface,thus reducing the electrical conductivity.In this study,we demonstrate that pure aluminum(Al)/carbon nanotubes(CNTs)nanocomposites prepared by friction stir processing have successfully broken through these limitations.The yield strength and tensile strength of Al/CNTs nanocomposites have improved by 104.7%and 51.8%compared to pure Al,while the electrical conductivity remained comparable to that of pure Al.To explore the potential mechanisms,the interface between CNTs and Al was examined and characterized by transmission electron microscopy(TEM)and Raman spectroscopy.Little interfacial reaction compounds were present and no visible physical gaps were observed at CNTs and Al interfaces.We defined it as a clean and tightly bonded interface.Although the quantity of phase interface has increased,the electrical conductivity of the nanocomposite remains approximately unchanged.We attribute the preserved electrical conductivity to the clean and tightly bonded CNTs/Al interface in the nanocomposite. | Shuai Zhang Gaoqiang Chen Timing Qu Jinquan Wei Yufan Yan Qu Liu Mengran Zhou Gong Zhang Zhaoxia Zhou Huan Gao Dawei Yao Yuanwang Zhang Qingyu Shi Hua Zhang | 2021 | Nano Research2021，14，8： | 1 |
| 5 | An approach of color image quantization based on ant colony clustering algorithm 显示文摘 | Real - Time Tracking of Non - Computer Vision and Pattern Chen Qiwu Chen jin Xu Dan | 2007 | Journal of Yunnan University2007，29，2： | 1 |
| 6 | The study of a rotating method for fabricating Y1 Ba2 Cu3O7-x films by TFA-MOD显示文摘 | Chen Huan Feng Feng Qu Timing | | 0，，15： | 1 |
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