H-mode experimental integrated modeling of impurity injection to control divertor heat flux on HL-2A

Yu Peng,Huang Qianhong,Zhong Yijun,Wu Ting,Wang Jun,Wang Zhanhui,Gong Xue-yu 한국물리학회 2023 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.82 No.8

Based on the METIS integrated modeling platform, combined with the experimental data of the #34512 shot detached divertor operation on the HL-2A, this paper selects suitable physical models, and compares and analyzes the integrated modeling results with the experimental results. The modeling results are in good agreement with the experimental results. On this basis, the reason for the decrease of the peak heat fux on the divertor targets is investigated using the METIS simulator. The results show that the two factors of entering the H-mode and the radiation enhancement efect generated by impurity injection work together to reduce the heat fow on the targets. Finally, the diferent efects of N, Ar and Ne impurity gases on the heat fux reduction of the targets are simulated under the condition that the plasma line-average efective charge (Zef) is kept unchanged. The results show that N and Ar are both better than Ne in controlling the heat fow on the targets, and N has the best compatibility in the core, which can not only reduce the boundary heat fow but also maintain the core confnement performance.

The Cognitive Analysis on past perfect auxiliary verb of Classical Japanese

Yu Peng 조선대학교 국제문화연구원 2013 국제문화연구 Vol.6 No.2

This paper gives a preliminary anynasis on the semantic category of Japaneses classical past perfect auxiliary verbs by the using the prototype theory. This theory presents a new cognitive thinking mode, while emphasizing the interaction between human beings and the objective world. With the help of its construction mode, we have had a clear knowledge of not only the relationship between different meanings of a past perfect auxiliary verb but also the essence of its semantic similarities and differences.

中高级汉语水平韩国学生习得“NP+们”的偏误分析及教学建议

YU PENG 한국중국언어학회 2019 중국언어연구 Vol.0 No.83

Chinese plural mark Men(们) is frequently used in modern Chinese, and it had not been regarded as teaching difficult or important points in practical teaching, However, there were many errors even for Korean Students at intermedinte and advanced levels. In consideration of this condition, this paper aims to analyze errors about Men(们) made by Korean Chinese learners, and make some suggestions on the basis of analysis results. Eventually hope to be able to make the students understand and correctly apply "NP+Men(们) ",and provide some reference about complex number concept in the process of Chinese-Korean translation so as to avoid mistranslation to the greatest degree. 复数标记“们”在现代汉语中极其常用,在实际教学和学习中,从教师到学生一般都不会把它作为重点难点问题,但即使到了中高阶段,韩国学生在使用“们”时仍然经常出现大量“误加”偏误。鉴于这种情况,我们根据韩国学生可能出现的“们”字偏误编写了测试问卷,对220名HSK(汉语水平考试)5级以上的韩国学生进行书面调查。统计数据,考察偏误类型,分析偏误产生的原因。旨在为中高级阶段“NP+们”结构汉语教学提出建议,帮助学生理解并正确使用“NP+们”。同时也希望能为韩中翻译中有关复数概念的翻译提供参考,最大程度上避免误译情况的发生。

Sequential use of SOM, DEA and AHP method for the stepwise benchmarking of emerging technology

Yu, Peng,Lee, Jang Hee The Knowledge Management Society of Korea 2012 지식경영연구 Vol.13 No.5

Emerging technologies have significant implications in establishing competitive advantages and are characterized by continuous rapid development. Efficient benchmarking is more and more important in the development of emerging technologies. Similar input level and importance are two necessary criteria need to be considered for emerging technology's benchmarking. In this study, we proposed a sequential use of self-organizing map(SOM), data envelopment analysis(DEA) and analytical hierarchy process(AHP) method for the stepwise benchmarking of emerging technology. The proposed method uses two-level SOM to cluster the emerging technologies with similar required input levels together, then, in each cluster, uses DEA-BCC model to evaluate the efficiencies of the emerging technologies and do tier analysis to form tiers. On each tier, AHP rating method is used to calculate each emerging technology's importance priority. The optimal benchmarking path of each cluster is established by connecting the emerging technologies with the highest importance priority. In order to validate the proposed method, we apply it to a case of biotechnology. The result shows the proposed method can overcome difficulties in benchmarking, select suitable benchmarking targets and make the benchmarking process more efficient and reasonable.

An Effective Framework for Contented-Based Image Retrieval with Multi-Instance Learning Techniques

Yu Peng,Kun-Juan Wei,Da-Li Zhang 대한전자공학회 2007 JUCT : Journal of Ubiquitous Convergence Technolog Vol.1 No.1

Multi-Instance Learning(MIL) performs well to deal with inherently ambiguity of images in multimedia retrieval. In this paper, an effective framework for Contented-Based Image Retrieval(CBIR) with MIL techniques is proposed, the effective mechanism is based on the image segmentation employing improved Mean Shift algorithm, and processes the segmentation results utilizing mathematical morphology, where the goal is to detect the semantic concepts contained in the query. Every sub-image detected is represented as a multiple features vector which is regarded as an instance. Each image is produced to a bag comprised of a flexible number of instances. And we apply a few number of MIL algorithms in this framework to perform the retrieval. Extensive experimental results illustrate the excellent performance in comparison with the existing methods of CBIR with MIL.

中國大學生閱讀不同文體漢語篇章的眼動實驗硏究

于?(Yu, Peng) 한국중국어교육학회 2014 중국어교육과연구 Vol.0 No.19

24 Chinese University students were divided into two groups according to gender. Using the eye-movement technique, the present study investigated the reading comprehension and eye-movement indexes on Chinese texts of different types. It is found that when reading Chinese texts of the same levels, Chinese students show prominent difference because of various article types. When reading Chinese texts of different types, the order of decreasing difficulty is: argumentative article, narrative article and explanatory article.

Transformation of TiO₂ Film to Titanate Nanotube Thin Film Using Hydrothermal Method

Yupeng Guo,Nam-Hee Lee,Hyo-Jin Oh,Cho-Rong Yoon,Sun-Jae Kim 한국표면공학회 2007 한국표면공학회 학술발표회 초록집 Vol.2007 No.-

In this study, the technology to grow oriented nanotube thin film from dip-coated TiO₂using hydrothermal method has been successfully developed. The effects of preparation parameters, such as reaction temperature, duration and post treatment conditions on the film morphologies and the adherence to the substrate, have been examined. A general formation mechanism of oriented titanate nanotube thin film is proposed in terms of the detailed observation of the products via two dimensional surface FESEM studies and HRTEM images. The overall formation of TiO₂-based nanotube thin film can be summarized with three successive steps: (1) TiO₂dissolving and amorphous Na₂TiO₃deposition process; (2) layered Na₂Ti₃O?, formation via spontaneous crystallization and rapid growth process; (3) formation of nanotube thin film via Na₂Ti₃O? splitting and multilayer scrolling process of (l00) planes around the c axis of NazTi:I07.

Sino-Globalization Network of Chinese Migrants, Students, and Travellers

Yupeng Zhu(주우붕),Hyejin Park(박혜진),Han Woo Park(박한우) 한국산학기술학회 2020 한국산학기술학회논문지 Vol.21 No.9

이 연구는 중국인이 세계화로 편입되는 상황에서 나타나는 이민자, 유학생, 여행자의 네트워크 분석을 통해 중국세계화 현황을 살펴보는 것을 목적으로 한다. 글로벌 네트워크에서 중국 이민자, 유학생, 여행자의 연관성을 제시하였다. 분석 방법은 UN의 이민자 데이터와 UNESCO의 유학생 데이터, 중국문화여행부의 여행자 데이터를 이용하여 중국 세계화의 관점에서 네트워크 및 QAP분석을 이용하였다. 분석결과 첫째, 이민이나 유학은 선진국으로 향하는 경향이 강했고, 여행은 아시아 지역에 대한 선호도가 높은 것으로 나타났다. 국가별로 태국은 여행자 네트워크에서, 미국은 이민자와 유학생 네트워크의 주요 목적지로 나타났다. 둘째, QAP 기반 통계적 상관관계 분석결과 중국 이민자들과 유학생들로 구성된 매트릭스 간 상관관계가 유의미한 것으로 나타났다. MR-QAP 분석을 통해 유학생과 이민자 네트워크가 높은 결정계수를 보여 두 변수 간 인과관계가 높은 것으로 나타났다. 이 분석을 통해 중국의 세계화에 따른 기회와 문제점을 검토하고 각국별 정책적 대책을 마련할 수 있는 실증적 근거를 제시하였다. 후속 연구에서는 중국 유학생과 중국 이민자의 국가 선택 요인, 중국의 세계화가 다른 나라들에 미치는 경제적, 사회적, 문화적 영향을 다각도로 분석하여 이 연구의 제한점을 보완할 것이다. This study examined Sino-globalization through the network analysis of Chinese immigrants, international students, and travelers. The data were collected from the United Nations for immigrants, UNESCO for international students, and Ministry of Culture and Tourism of China for travelers. Consequently, Chinese immigrants and international students" favorite destinations were advanced Western countries, and Chinese travelers showed a high preference for Asian regions. Specifically, Thailand was the most popular destination for traveling, while the U.S. appeared to be the main destination for Chinese immigrants and students. The QAP analysis results showed a statistically significant correlation between the immigrant network and international student network. MR-QAP analysis found a causal relationship between the two networks. These findings may serve as empirical evidence for the Chinese government to review potential opportunities and problems related to Sino-globalization and provide the basis for preparing policy measures for other countries. Subsequent studies should compensate for research limitations by analyzing specific factors affecting national choice of Chinese immigrants, students, and travelers. The economic, social, and cultural impacts of China"s globalization on other countries need to be discussed using qualitative research.

Synthesis, Characterization and Photocatalytic Activity of Titanate Nanotubes Films

Yupeng Guo,Nam-Hee Lee,Hyo-Jin Oh,Yeong-Ung Yun,Dae-Girl Lee,Kyeong-Soon Park,Sang-Chul Jung,Sun-Jae Kim 한국표면공학회 2008 한국표면공학회 학술발표회 초록집 Vol.2008 No.-

Analsis of M-WiMAX uplink Capacity With Receive Beamforming and Adjacent Channel Interference from WCDMA Downlink

YuPeng Wang,장경희 한국통신학회 2008 韓國通信學會論文誌 Vol.33 No.3