http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Research on Analysis of Sports Video based on the Statistics
Haitao Yang,Jia Wang,Jingmeng Sun 보안공학연구지원센터 2015 International Journal of u- and e- Service, Scienc Vol.8 No.12
We turn to statistical-based methods and propose a statistical inference approach by using Dynamic Bayesian Network, which is able to learn automatically from data set. By soccer video analysis is as an example, the proposed method is verified by experiment. We extract the color, shape and other low-level features from the video, to detect and identify 5 kinds of high-level semantic events using dynamic Bayesian network model. The experimental results show that our method is effective.
Detection of Corner Event Based on Hidden Markov Model in Soccer Video
Haitao Yang,Jia Wang,Jingmeng Sun 보안공학연구지원센터 2015 International Journal of Signal Processing, Image Vol.8 No.12
A corner event detection method based on HMM (Hidden Markov Model) in soccer videos. Through analysis of the semantic structure of corner events, define and extract six multi- modal semantic clues to describe shot sequences, which constitute observation sequences as the HMM model input. By the iterative training of the HMM model and the continuous optimization of model parameters, construct the HMM model of corner events. From two aspects of audio and video, dig the inherent pattern of corner events and realize corner events automatic detection based on HMM accurately. The experimental results show that the present method achieves 89.6% recall and 96.3% precision, which has the better performance.
Man Yang,Yilun Zou,Lei Ding,Yang Yu,Jinai Ma,Lei Li,Ande Fudja Rafryanto,Jing Zou,Arramel,Haitao Wang 한국탄소학회 2023 Carbon Letters Vol.33 No.5
Decabromodiphenyl ether (BDE209) is a persistent aromatic compound widely associated with environmental pollutants. Given its persistence and possible bioaccumulation, exploring a feasible technique to eradicate BDE209 efficiently is critical for today’s environmentally sustainable societies. Herein, an advanced nanocomposite is elaborately constructed, in which a large number of titanium dioxide ( TiO2) nanoparticles are anchored uniformly on two-dimensional graphene oxide (GO) nanosheets ( TiO2/GO) via a modified Hummer’s method and subsequent solvothermal treatment to achieve efficient photocatalytic degradation BDE209. The obtained TiO2/ GO photocatalyst has excellent photocatalytic due to the intense coupling between conductive GO nanosheets and TiO2 nanoparticles. Under the optimal photocatalytic degradation test conditions, the degradation efficiency of BDE209 is more than 90%. In addition, this study also provides an efficient route for designing highly active catalytic materials.
The Event Detection of Serving a Ball in Sports Video
Jingmeng Sun,Yang Liu,Gang Liu1,Yang Wang,Haitao Yang 보안공학연구지원센터 2016 International Journal of Multimedia and Ubiquitous Vol.11 No.3
Tennis video’s serve events were detected. In other words, athletes area were obtained to calculate particle of athletes area and particle shift in adjacent frame by using background subtraction algorithm. And then tennis video’s serve events were inferred, according to specific constraints on serve, through establishing ontology and setting SWRL rules.
Preparation and thermo-mechanical properties of heat-resistant epoxy/silica hybrid materials
Yang, Peng,Wang, Guoqing,Xia, Xue,Takezawa, Yoshitaka,Wang, Haitao,Yamada, Shinji,Du, Qiangguo,Zhong, Wei Wiley Subscription Services, Inc., A Wiley Company 2008 Polymer engineering and science Vol.48 No.6
<P>Diglycidyl ether of bisphenol-A (DGEBA) based epoxy/silica hybrid materials filled with various amounts of 3-glycidoxypropyltrimethoxysilane (GPTMS) and silica nanoparticles were prepared, using 4,4′-diaminodiphenyl sulfone (DDS) as curing agent. The obtained hybrid materials were analyzed by means of Fourier-transform infrared spectroscopy (FTIR), dynamic mechanical analysis (DMA), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). The results indicated that the introduction of GPTMS and silica nanoparticles had synergistic effect. The addition of GPTMS not only ameliorated the compatibility between silica and the epoxy matrix but also increased the crosslinking density of the epoxy system; meanwhile the nano-silica further reinforced the inorganic network of the hybrid system. Consequently, the hybrid materials showed much improved heat-resistant properties. The storage modulus of the hybrid systems showed no obvious decrement in the glass transition region and kept at a high value even in the temperature region up to 300°C. The integral thermal stability of the resulting hybrid materials was also improved compared with the corresponding pure epoxy resin. POLYM. ENG. SCI., 2008. © 2008 Society of Plastics Engineers.</P>
Magnetic properties of Bi-doped Y3Fe5O12 nanoparticles
Haitao Xu,Hua Yang,Wei Xu,Lianxiang Yu 한국물리학회 2008 Current Applied Physics Vol.8 No.1
Bi³+ substituted garnet nanoparticles Y₃. xBiχFe5O₁₂ (x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0, 1.2 and 1.3) were fabricated by a solgel methodand their crystalline structures and magnetic properties were investigated by using X-ray diraction (XRD), IR spectroscopy, thermalgravity analysisdierential thermal analysis (TG-DTA), transmission electron microscope (TEM), Mo¨ssbauer spectroscopy and vibrat-3. xBixFe5O12 have only peaks of the garnet structure.
Haitao Li,Yang Sun,최형진,Siqin Zhao 한국고분자학회 2018 Macromolecular Research Vol.26 No.9
Hierarchical architectures of poly(methyl methacrylate) (PMMA)/aminofunctionalized multi-walled carbon nanotube (MWNT-NH2) particles were prepared, in which the electrical conductive network was constructed on the surface of PMMA microspheres. The morphology, composition, and electrical conductivity of the particles were characterized by transmission electron microscopy, Fourier transform infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis, and four-probe electrical conductivity measurement. The PMMA/MWNT-NH2 transducers were exposed to each ethanol, water, toluene, and chloroform for volatile organic compounds (VOCs) sensing detection. The particles showed excellent sensitivity, good reversibility, and a strong response compared to the raw MWNTs and MWNT-NH2. This was attributed not only to the formation of a charge transmission path on the particle surface, but also to the interaction between the vapor molecules and functionalized MWNTs. The enhanced sensing performance of the PMMA/MWNT-NH2 particles suggests that it is a good candidate for the preparation of electronic noses for disease diagnostics and VOCs detection.
Yang Man,Chen Yiyang,Wang Haitao,Zou Yilun,Wu Pingxiu,Zou Jing,Jiang Jizhou 한국탄소학회 2022 Carbon Letters Vol.32 No.7
Pentachlorophenol (PCP), as one of the common pesticide and preservatives, is easily accumulated in living organisms. Considering the high toxicity of PCP, the development of an effective and sensitive inspection method to determine the residual trace amounts of PCP continues to be a significant challenge. Herein, a convenient and sensitive electrochemical sensor is constructed by modifying glassy carbon electrode with cerium dioxide (CeO2) nanoparticles anchored graphene (CeO2-GR) to detect trace PCP. Benefiting from the two-dimensional lamellar structural advantages, the extraordinary electron-transfer properties, as well as the intensive coupling effect between CeO2 nanoparticles and graphene, the afforded CeO2-GR electrode nanomaterial possesses excellent electrocatalytic activity for the oxidation of PCP. Under the optimum synthetic conditions, the PCP oxidation peak currents of developed CeO2–GR sample exhibit a wide linear range of 5–150 μM. Moreover, the corresponding detection limit of PCP on the CeO2–GR electrode is as low as 0.5 μM. Apart from providing a promising electrochemical sensor, this work, most importantly, promotes an efficient route for the construction of highly active sensing electrode materials.
A fluorescent probe for colorimetric detection of bisulfite and application in sugar and red wine
Haitao Chen,Xiaoming Wu,Jialin Wang,Hao Wang,Feiyan Tao,Shaoxiang Yang,Hongyu Tian,Yongguo Liu,Baoguo Sun 한국식품과학회 2019 Food Science and Biotechnology Vol.28 No.4
A new fluorescent probe made from (E)-2-(benzo[d]thiazol-2-yl)-3-(6-hydroxynaphthalen-2-yl) acrylonitrile(Probe 1) was synthesized for the determination ofbisulfite concentrations in real food samples (red wine andsugar). Adding bisulfite to a Probe 1 solution caused amarked decrease in fluorescence intensity and a visualcolor change from yellow to light yellow. This distinctcolor response indicates that Probe 1 could be used as avisual sensor for bisulfite. Probe 1 can detect bisulfitequantitatively in the range 0–400 lM with a detection limitof 0.10 lM. This makes Probe 1 a convenient signalinginstrument for determining bisulfite levels in sugar and redwine samples.