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( Pei Qin ),( Jinbae Lee ),( Kiryong Ha ),( Wonsool Ahn ) 한국고무학회 2019 엘라스토머 및 콤포지트 Vol.54 No.3
Carbon master batch (CMB) rubber sheets, which are stored in stacks, are difficult to separate during reuse because of the adhesion between sheets caused by the stacked weight over time. To solve this problem, in the actual rubber product manufacturing process, various anti-tacking agents (solid powder or liquid surfactants) are applied to the sheet surface. In this study, the emulsion samples of zinc (Zn)-stearate/triethanolamine (TEA)-stearate mixtures were prepared using TEA-stearate as a surfactant, prepared using an industrially manufactured Zn-stearate powder, and their basic anti-tacking properties were studied. During the process of manufacturing emulsion, a heat treatment process and an auxiliary surfactant were introduced to improve the dispersion stability. Results showed that the heat-treated sample exhibited a significant improvement in terms of sedimentation, storage stability, and anti-tacking characteristics since the Zn-stearate particles were reduced to a smaller size by the heat-treatment than that of the original Zn-stearate powder.
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An Algorithm for Vein Matching Based on Log-polar Transform
Wei Yan,Jianbin Xie,Peiqin Li,Tong Liu,Xiaoguang Guo 한국산학기술학회 2013 SmartCR Vol.3 No.5
This article discusses a new algorithm for vein matching based on log-polar transform to address problems that occur with the changing of finger position and from differences between imaging devices for current vein matching algorithms. The new algorithm first extracts the feature area, which contains enough characteristics for image matching, depending on the structure of the finger vein ridge alignment. It then calculates the degree of similarity between the log-polar transform results of the model image feature areas and the sample image, and finally analyzes the result by the degree of similarity and the relationship of relative positions between feature areas. Experiments show that the algorithm is robust for rotating and zooming images of the finger vein.
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A Fast and Robust Algorithm for Fighting Behavior Detection Based on Motion Vectors
( Jianbin Xie ),( Tong Liu ),( Wei Yan ),( Peiqin Li ),( Zhaowen Zhuang ) 한국인터넷정보학회 2011 KSII Transactions on Internet and Information Syst Vol.5 No.11
In this paper, we propose a fast and robust algorithm for fighting behavior detection based on Motion Vectors (MV), in order to solve the problem of low speed and weak robustness in traditional fighting behavior detection. Firstly, we analyze the characteristics of fighting scenes and activities, and then use motion estimation algorithm based on block-matching to calculate MV of motion regions. Secondly, we extract features from magnitudes and directions of MV, and normalize these features by using Joint Gaussian Membership Function, and then fuse these features by using weighted arithmetic average method. Finally, we present the conception of Average Maximum Violence Index (AMVI) to judge the fighting behavior in surveillance scenes. Experiments show that the new algorithm achieves high speed and strong robustness for fighting behavior detection in surveillance scenes.
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Driver`s Face Detection Using Space-time Restrained Adaboost Method
( Tong Liu ),( Jianbin Xie ),( Wei Yan ),( Peiqin Li ) 한국인터넷정보학회 2012 KSII Transactions on Internet and Information Syst Vol.6 No.9
Face detection is the first step of vision-based driver fatigue detection method. Traditional face detection methods have problems of high false-detection rates and long detection times. A space-time restrained Adaboost method is presented in this paper that resolves these problems. Firstly, the possible position of a driver`s face in a video frame is measured relative to the previous frame. Secondly, a space-time restriction strategy is designed to restrain the detection window and scale of the Adaboost method to reduce time consumption and false-detection of face detection. Finally, a face knowledge restriction strategy is designed to confirm that the faces detected by this Adaboost method. Experiments compare the methods and confirm that a driver`s face can be detected rapidly and precisely.
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Ruonan Zhang,Nicky Chang Bi,Peiqin Chen 한국언론학회 2020 Asian Communication Research Vol.17 No.2
This study confirms and extends Situational Theory of Problem Solving (STOPS) by examining it in the context of the U.S.-China trade dispute. Using Chinese national survey data (N = 935), this study reveals that the attitude towards China’s stand on the trade dispute as a significant negative mediator between antecedent perceptual variables and multiple communicative actions: online information seeking, online information permitting, and information sharing. This study provides empirical proof of STOPS from a different cultural setting other than the U.S. It not only confirms the theoretical structure of the novel variables developed through STOPS, but also advances the theory by testing the communicative actions in the online realm as dependent variables. Practical implications on crisis communication and political public information management were also discussed.
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Siying Lin,Xiang Huang,Zhenxiang Bu,Zhihong Lin,Peiqin Xie,Xiaolong Lin,Lingyun Wang,Wenlong Lv 한국섬유공학회 2020 Fibers and polymers Vol.21 No.7
Due to its small diameter and high density, electrospun nanofiber membranes have high resistance which obstaclestheir application. In this paper, we proposed a new electrospinning method based on low-temperature, which can affect thedeposition process of electrospinning by utilizing the freezing process of steam in the receiving plate. The filling andsupporting of ice could enlarge the pores of membranes and intervals among fibers, which caused the high porosity (92 %),rough surface, fluffy structure and low pressure drop (123 Pa) of polyvinylidene fluoride (PVDF) nanofibrous membranes. The results suggested that the electrospinning method is a promising way to prepare nanofibrous membranes with high airpermeability and fluffy structure for air filtration.
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Finger Vein Representation by Modified Binary Tree Model
Tong Liu,Jianbin Xie,Huanzhang Lu,Wei Yan,Peiqin Li 한국산학기술학회 2013 SmartCR Vol.3 No.2
Finger vein recognition has high identification accuracy and strong security performance, which can be used in banks, offices, factories, etc. Although image representation is not a necessary process for finger vein recognition, a proper representation method can help to explore distribution regularities and structure differences of finger veins, and provides instructive information for finger vein recognition. It is very difficult to represent finger veins because of their irregular structure. Therefore, four principles (caliber uniformity, node replication, loop splitting, and virtual connection) are proposed in this paper, first to simplify the finger vein structure as a binary tree structure. Then a modified binary tree model is proposed based on the binary tree structure. The new model uses the binary tree to describe the relationships between different vein branches and uses a B-spline function to describe the spatial structure of vein branches. Experiments show that this model can quantitatively describe the relationships between, and the spatial structure of, vein branches with little representation error and low storage space requirements.
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