Pedestrian Detection Algorithm Combining HOG and SLBP

Aili Wang,Mingxiao Wang,Jitao Zhang,Yuji Iwahori,Bo Wang 보안공학연구지원센터 2016 International Journal of Multimedia and Ubiquitous Vol.11 No.10

In order to solve the problem of pedestrian detection performance, the described operator was improved. In this paper, semantic local binary pattern (SLBP) and histogram of oriented gradient (HOG) are combined as new feature operator. This feature method would enrich the information and enhance the detection performance. And then histogram intersection kernel support vector machine (HIKSVM) classifier is trained by the augment feature. Because the time cost is too large by the conventional SVM. HIKSVM could make up this drawback, and significantly reduce the training time. The experiments on the INRIA pedestrian dataset show that the method obtained significant improvement in accuracy comparing to HOG descriptors.

3D Reconstruction of Remote Sensing Image Using Region Growing Combining with CMVS-PMVS

Aili Wang,Na An,Yangyang Zhao,Yuji Iwahori,Rui Kang 보안공학연구지원센터 2016 International Journal of Multimedia and Ubiquitous Vol.11 No.8

The characteristics of remote sensing image is not obvious and can not reflect the be reconstructed the detail characters of the objects. For the sparse points in multi images fusion results, texture selection and it is relatively difficult problems, for accurate reconstruction of remote sensing image details, this paper presents CMVS-PMVS(cluster multi view stereo- patch based multi view stereo) combining with region growing for computing dense matching points. First, select some seed points by region growing algorithm, and find the matching relationship between the seed points, followed by the matching relation from the seed point to spread until to the entire image. Then the image set are clustered by CMVS in order to reduce the amount of data in the process of reconstruction, and the operation rate and reconstruction accuracy can be improved. PMVS reconstruction method is used to complete the reconstruction task by matching, expanding and filtering three steps. The experimental results showed that the point cloud is dense enough which are reconstructed by the 3d reconstruction algorithm based on regional growth combining CMVS-PMVS and well expressed the practical model of object reconstruction, the reconstruction of objects in remote sensing images has very strong practicability.

[BMIM]Cl-nAlCl3 ionic liquid-catalyzed redistribution reaction between methyltrichlorosilane and low-boiling residue to dimethyldichlorosilane

Aili Wang,Yiqian Jiang,Weiguang Chen,Yanjun Liu,Yutang Shen,Tingshun Jiang,Zhanao Wu,Hengbo Yin 한국공업화학회 2012 Journal of Industrial and Engineering Chemistry Vol.18 No.1

Methyltrichlorosilane and low-boiling residue from the synthesis of methylchlorosilanes via the direct reaction of silicon and methyl chloride were effectively converted to high-valued dimethyldichlorosilane catalyzed by 1-butyl-3-methylimidazolium chloroaluminate, [BMIM]Cl-nAlCl3, ionic liquid catalysts. The yield of dimethyldichlorosilane reached 69.1% when the redistribution reaction between methyltrichlorosilane and low-boiling residue was catalyzed by [BMIM]Cl-6AlCl3 at a reaction temperature of 150 8C for 300 min. The conversion of methyltrichlorosilane was 87.8%. And the conversions of tetramethylsilane, methylhydrodichlorosilane, and dimethylhydrochlorosilane present in low-boiling residue were ca. 100%, respectively. The ionic liquids could be recycled efficiently. This research provided an eco-friendly and economical route for the treatment of methyltrichlorosilane and low-boiling residue, which were the by-products in the direct synthesis of methylchlorosilanes. The possible reaction route was also discussed.

A Novel Image Superresolution Reconstruction Algorithm Based on Sparse Representation

Aili Wang,Xinyuan Wang,Yuji Iwahori,Yuan Feng,Na Jiang 보안공학연구지원센터 2015 International Journal of Signal Processing, Image Vol.8 No.6

Superresolution image reconstruction technique uses single or a series of low-resolution images to reconstruct a high resolution image without changing the hardware devices, while improving image quality and the spatial resolution of the image. High resolution means the image with a higher pixel density, can provide more details. In this paper, a novel image superresolution algorithm based on sparse representation is studied. During over-complete dictionary of the training phase, the proposed method improves two aspects including feature extraction and dimension reduction. In the feature extraction process, combining the second derivative with the gradient direction, we construct a new descent direction to improve gradient method. The convergence speed of the new algorithm is faster than the gradient method and can get better results. Then improved two-dimensional Principal Component Analysis (2DPCA) algorithm is used to reduce the dimension, it could eliminate the correlation of the image lines and column. Experiment results show that this method of image reconstruction is better and faster for high resolution image reconstruction.

Fabrication of Robust Superhydrophobic Te@C-TiO2 Nanocomposites Coating for Application in Oil/Water Separation

Tao Wang,Aili Yan,Longgang Zhong,Sheng Wang 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2017 NANO Vol.12 No.10

The main issue limiting the widespread application of superhydrophobic coatings is their low surface robustness, which is closely related to surface roughness on the micro- or nanoscale, and is mechanically weak and easily gets abraded. This work uses Te nanowires as templates to support a carbon layer substrate for the growth of titanium dioxide nanoparticles; this forms hierarchical structures (Te@C-TiO2 nanocomposites). Modification with 1H, 1H, 2H, 2H - perfluoroalkyltriethoxysilane created a free-standing superhydrophobic coating. The optimal preparation conditions for the coating were identified after a systematic investigation of the reaction time of the carbon precursor and concentration of TiOSO4. The best anti-wetting performance was attained with 200 nm diameter Te@C and 15mL concentration of TiOSO4. Furthermore, due to their free-standing performance, the nanocomposites were easily loaded onto a polyester fabric to generate a robust superhydrophobic fabric. This fabric shows excellent mechanical durability and strong resistance to knife scratching, sandpaper abrasion, washing, as well as exposure to acid and alkali solutions. Moreover, the robust fabric is able to separate oil/water mixtures with high separation efficiency.

한국어 한자 어휘 연구의 유형에 대하여-중국인이 작성한 한국어 논문을 중심으로-

왕애려 ( Aili Wang ) 경남대학교 인문과학연구소 2017 人文論叢 Vol.43 No.-

이 글은 한국에서 유학을 하고 있는 중국인 유학생들이 `한자어`를 주제로 하여 쓴 논문들을 검토하여 그 유형을 분류하고, 경향을 파악해서 앞으로 어떠한 방향으로 연구를 하는 것이 좋을지에 대해 고민해 보는 것을 목적으로 하고 있다. 중국인 학습자들이 한국어를 배울 때, 가장 쉽게 배울 수 있는 것도 한자 어휘이고, 가장 배우기가 어려운 것도 한자 어휘이다. 이는 같은 형태의 한자어가 다른 의미를 가지고 사용될 수도 있다는 점에서 기인하는 것이다. 이런 점에 착안하여 중국인 유학생들은 한자 어휘의 형태와 의미 차이에 대한 논의, 그리고 이러한 차이점을 가진 한자어 교육 방안에 대한 논의들을 만들어 내기 시작했다. 하지만 현재 한자 어휘의 형태적 유사성과 의미적 차별성에서 기인하는 내용의 논의들은 논의 내용의 차별성을 찾아보기 힘들 만큼 비슷한 것들이 많아졌다. 소모적인 논의의 생성만이 가득한 것이다. 이러한 내용들을 감안하여 이 글에서는 앞으로 중국인 학습자들이 논문을 작성함에 있어 지녀할 태도에 대해 제시하고, 한국과 중국 양국에서 개선해야 할 점에 대해서도 언급하였으며, 중국인 유학생들이 앞으로 연구대상으로 삼을 수 있는 영역에 대해서도 생각해 보았다. The purpose of this writing is reviewing the theses which the Chinese students in Korea wrote with the them of words written in Chinese characters, categorizing the types, grasping the trend, and thinking deeply about what directions the research should be heading for. When Chinese Korean learners learn Korean, the easiest and the most difficult thing is the Sino Korean words, because words in the same form but with different meanings are often used in Korean. Based on this aspect, Chinese students started to study the differences of Sino-Korean words in form and meaning and the teaching methods of the Sino-Korean words with these differences. However, nowadays, it is very difficult to make distinctions among the research contents which were based on the morphological similarities and the semantic differences of the Sino-Korean words. Moreover, there are many similar studies also. It seems that only consumptive studies are being written. Considering this point, this paper proposed the attitudes that the Chinese learners should have when they do studies, presented the points that should be improved between Korea and China and figured out the fields that can be considered as research subjects in the future.

Characterization of Squamosa Promoter Binding Protein-LIKE genes in wheat

Bingnan Wang,Shuaifeng Geng,Di Wang,Nan Feng,Dongdong Zhang,Liang Wu,Chenyang Hao,Xueyong Zhang,Aili Li,Long Mao 한국식물학회 2015 Journal of Plant Biology Vol.58 No.4

Common wheat (Triticum aestivum) is an allohexaploid (AABBDD), with Triticum urartu (AA) and Aegilops tauschii (DD) as its A and D genome donors. Squamosa Promoter Binding Protein-Like (SPL) genes play important roles in plant development; however, a systematic study of this gene family in wheat is still lacking. Here, we mined the wheat genomes for SPLs and found 19 SPL genes each from the T. urartu and Ae. tauschii genomes. We also identified 58 SPL genes from the hexaploid wheat genome. We then compared the conservation and divergence of SPLs between the two diploid species in gene structures, tissuespecific expression patterns and responses to salt stress, drought and low temperature. For functional studies, two hexaploid wheat SPLs, TaSPL3 (with miR156 site mutated) and TaSPL6, were overexpressed in Arabidopsis and found to be involved in flowering time and biomass accumulation. In addition, a mutant allele (TaSPL6-D R ) with a 47 bp duplication upstream of the SBP domain was found to be associated with maturity date and grain number per spike among landraces from a Chinese wheat mini-core collection. Collectively, our work provides useful knowledge on the sequences and functions of wheat SPL genes that may help future functional studies and molecular breeding.

An Improved BER-Optimal Relay Selection Scheme for Decode-and-Forward Cooperative Networks

Yuhui Han,Mingji Yang,Aili Wang 보안공학연구지원센터 2015 International Journal of Future Generation Communi Vol.8 No.1

We are concerned with the relay selection in a decode-and-forward cooperative network to minimize the bit error rate (BER) in a radio cell. This problem can be solved using maximum weighted (MW) matching algorithm, greedy matching algorithm or worst-link-first (WLF) matching algorithm. Among the algorithms, WLF matching algorithm has achieved much attention for its being less complex while the achieved performance is high. In order to further reduce the computational complexity, we propose an improved WLF relay selection scheme, in which relays are selected according to instantaneous channel state information (CSI) and a cooperative threshold is set up to eliminate some unsatisfying candidate relays from the set of alternative candidate relays and thus reduce the amount of calculation. Theory analysis and simulation results both show that the improved WLF relay selection scheme proposed can be easily implemented and achieve almost the same BER performance as that of WLF scheme while the computational complexity is much lower.

Encapsulation of TiO2 particles with polystyrene and polymethyl acrylic acid and the pigmentary performances

Chaoqun Ge,Aili Wang,Hengbo Yin 한국공업화학회 2012 Journal of Industrial and Engineering Chemistry Vol.18 No.4

TiO2 particles were directly encapsulated with polystyrene and polymethyl acrylic acid by a surfactantfree polymerization method. TiO2 particles were uniformly encapsulated with polystyrene by Van der Waals force and effectively encapsulated with polymethyl acrylic acid by chemical bonding. Encapsulation of TiO2 particles with polystyrene and polymethyl acrylic acid significantly enhanced the organic dispersibility and dispersion stability of TiO2 particles in toluene because the surface property of TiO2 particles was changed from hydrophilicity to organophilicity after polymer encapsulation. The brightness and whiteness of the polymer-encapsulated TiO2 particles were similar to that of the naked TiO2.

Oxidation of cyclopentene catalyzed by phosphotungstic quaternary ammonium salt catalysts

Jinjuan Xue,Aili Wang,Jingbo Wang,Dongzhi Zhang,Weiguang Chen,Longbao Yu,Tingshun Jiang,Hengbo Yin 한국공업화학회 2010 Journal of Industrial and Engineering Chemistry Vol.16 No.2

A series of phosphotungstic quaternary ammonium salts, Q3 (PW12O40) and Q3(PW4O16) [Q = (C5H5)N+(C16H33), (C16H33)N+(CH3)3, (C4H9)4N+, and (CH3)4N+], were used as the catalysts in oxidation of cyclopentene. The catalysts [(C5H5)N(C16H33)]3(PW4O16) and [(C16H33)N(CH3)3]3(PW4O16) showed high catalytic activity in the selective oxidation of cyclopentene while using H2O2 (50%) as an oxidant and 2-propanol as a solvent. The oxidation products mainly consisted of glutaraldehyde, cis-1,2-cyclopentanediol and trans-1,2-cyclopentanediol. The above-mentioned two catalysts were dissolved completely in the reaction medium during the catalysis process and precipitated themselves from the reaction system after reaction, showing the characteristics of reaction-controlled phase-transfer catalysis. The types of quaternary ammonium cations and the phosphotungstic anions in phosphotungstic quaternary ammonium salts affected catalytic activity.