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Robust Repetitive Control Design and Its Application on Linear Servo Systems
Zeyuan Li,Wennong Zhang,Yihuang Zhang,Xiang Xu 한국정밀공학회 2015 International Journal of Precision Engineering and Vol. No.
A robust design method of the discrete-time plug-in repetitive control system is proposed. By modifying the stabilizing compensator,the robustness of the repetitive control system can be well ensured together with the zero-following error performance. The designmethod is simple and straightforward. Meanwhile, a novel robustness criterion for the discrete-time repetitive control system isintroduced, and theoretical analysis is taken to compare the robustness of the proposed controller with the widely used zero phaseerror tracking controller (ZPETC). The proposed repetitive controller is implemented in a linear servo system. Simulation isperformed to verify the theoretical analysis, and the experimental results show the effectiveness of the proposed controller.
Human Motion Recognition Based on Spatio-temporal Convolutional Neural Network
Zeyuan Hu,Sange-yun Park,이응주 한국멀티미디어학회 2020 멀티미디어학회논문지 Vol.23 No.8
Aiming at the problem of complex feature extraction and low accuracy in human action recognition, this paper proposed a network structure combining batch normalization algorithm with GoogLeNet network model. Applying Batch Normalization idea in the field of image classification to action recognition field, it improved the algorithm by normalizing the network input training sample by mini-batch. For convolutional network, RGB image was the spatial input, and stacked optical flows was the temporal input. Then, it fused the spatio-temporal networks to get the final action recognition result. It trained and evaluated the architecture on the standard video actions benchmarks of UCF101 and HMDB51, which achieved the accuracy of 93.42% and 67.82%. The results show that the improved convolutional neural network has a significant improvement in improving the recognition rate and has obvious advantages in action recognition.
The Reception of W. B. Yeats in China
Zeyuan Hu 한국예이츠학회 2020 한국예이츠 저널 Vol.62 No.-
예이츠는 중국에서 1910년대부터 소개되고, 번역되고 연구되었다. 수용 범주는 3가지인데, 지배자에 항거하는 민족주의 작가, 신중국시의 현대적 규범으로서의 예이츠, 중국문학의 국제화를 위해 공부하는 세계문학으로서의 그의 작품성, 등이 다. 중국에서의 예이츠의 변모는 외국문학의 수용은 정치적, 문화적, 문학적 요소 등이 상호작용하는 역동적 과정이라는 점을 가장 잘 보여준다. W. B. Yeats has been introduced, translated, and studied in China since 1910s. The reception of Yeats in China falls into three aspects: as nationalist writer who fights against the colonial oppression, as model modernist for Chinese New Poetry, and his work as world literature, which Chinese writers study for the internationalization of literature in China. The metamorphosis of Yeats in China best shows that the reception of foreign literature is a highly dynamic process in which various factors, which are political, cultural, and literary, interact with each other.
Improved DT Algorithm Based Human Action Features Detection
Hu, Zeyuan,Lee, Suk-Hwan,Lee, Eung-Joo Korea Multimedia Society 2018 멀티미디어학회논문지 Vol.21 No.4
The choice of the motion features influences the result of the human action recognition method directly. Many factors often influence the single feature differently, such as appearance of the human body, environment and video camera. So the accuracy of action recognition is restricted. On the bases of studying the representation and recognition of human actions, and giving fully consideration to the advantages and disadvantages of different features, the Dense Trajectories(DT) algorithm is a very classic algorithm in the field of behavior recognition feature extraction, but there are some defects in the use of optical flow images. In this paper, we will use the improved Dense Trajectories(iDT) algorithm to optimize and extract the optical flow features in the movement of human action, then we will combined with Support Vector Machine methods to identify human behavior, and use the image in the KTH database for training and testing.
樓澤園(LOU ZEYUAN),李春永(LEE CHUN YOUNG) 동아인문학회 2022 동아인문학 Vol.58 No.-
In the Joseon Dynasty, printing technology made great progress. Korean literati and officials were keen on writing books, and their written works were compiled and printed by themselves or their disciples and descendants. The Korean Literary Collections in Classical Chinese (한국 문집 총간), compiled by the Institute of Classical Translation of Korea, is a collection of anthologies written by many writers of the Joseon Dynasty. In the middle and late Period of Korea, a large number of Korean literary anthologies began to emerge, in which there are a large number of variant characters worth studying. In particular, these different characters can show the characteristics of foreign spread and local change of Chinese characters in the Joseon Dynasty. In this paper, the representative anthology Hakbongjip is selected as the research object. After determining the definition of heteromorphic characters in this paper as “characters with identical and interchangeable meanings that can all be used in the same word”, Select the “遡”, “飜”, “摠”, “脣”, “椀”, “覩”, “筭”, “鰌”, “ ”, “窻”, “?”, “?”, “㗳”, “疎”, “?” a total of 15 words.According to Wang Ning"s theory of Chinese character structure classification, and according to the heterogeneous characters and heteronyms of the large classification, and then detailed classification. Based on the research materials of Korean ancient variant characters and Chinese dictionaries and phonology books, this paper explores the similarities and differences between variant characters and common characters. Combined with other literary anthologies in the middle and late Period of the Joseon Dynasty, this paper investigates the use of the anthologies in the official and civilian editions of the Joseon Dynasty. The official inscription takes the characters in The Annals of the Joseon Dynasty as the standard, and the folk inscription takes the characters in other literary anthology of the middle and late Joseon dynasty as the comparison object, so as to make a comparison of the variant characters in Hakbongjip. Through research, the heteromorphic characters of Hakbongjip have three characteristics: quaint, unique and popular.
HALF-METALLIC SILICENE AND GERMANENE NANORIBBONS: TOWARDS HIGH-PERFORMANCE SPINTRONICS DEVICE
YANGYANG WANG,JIAXIN ZHENG,ZEYUAN NI,RUIXIANG FEI,QIHANG LIU,RUGE QUHE,CHENGYONG XU 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2012 NANO Vol.7 No.5
By using first-principles calculations, we predict that an in-plane homogenous electrical ¯eld can induce half-metallicity in hydrogen-terminated zigzag silicene and germanene nanoribbons (ZSiNRs and ZGeNRs). A dual-gated ¯nite ZSiNR device reveals a nearly perfect spin-¯lter e±ciency (SFE)of up to 99% while a quadruple-gated ¯nite ZSiNR device serves as an effective spin ¯eld e®ect transistor (FET) with an on/o® current ratio of over 100 from ab initio quantum transport simulation. This discovery opens up novel prospect of silicene and germanene in spintronics.