다이캐스팅한 SiC 입자강화 알루미늄 복합재료의 피로균열 전파특성

김송희,윤여범,이기호,오준도,주희위,이지환 대한금속재료학회(대한금속학회) 1998 대한금속·재료학회지 Vol.36 No.8

This study is to investigate the effect of load ratio on fatigue crack of die-cast SiC particulate aluminum composites. Fundamental fatigue crack propagation tests were performed with sub-sized C-T specimens at a load ratio of 0.1, 0.3 and 0.5 respectively. Crack closure measurements were conducted for explaning the effect of load ratio on fatigue crack growth. The experimental results showed that the fatigue crack growth rate increases with the load ratio, especially at near threshold. The composite reinforced with 20 vol.% SiC particles was better in fatigue crack growth resistance than that with 10 vol.% SiC particles. Through the measurement of Kop and ΔK at various R ratios the concept of effective stress intensity factor range ratio. U was reviewed to evaluate the stress ratio effect on fatigue crack growth. Relationships between U and variables such as ΔK and R were obtained empirically so that we could predict ΔK_(eff) that is of critical importance for the prediction of fatigue crack propagation rate.

교수실제, 가정의 심리적 환경과 학교행복감 간의 관계에서 중학생의 학업정서와 자기주도학습의 매개효과

Wu,Yile(Yile Wu),안도희(Doehee Ahn) 부산대학교 교육발전연구소 2023 교육혁신연구 Vol.33 No.2

Purpose: This study was to explore the structural relationships among instructional practices, family process, academic emotions, self-directed learning, and school happiness perceived by middle school students. Moreover, it examined gender differences in these variables and the mediating effects of academic emotions and self-directed learning on the relationship between instructional practices, family process, and school happiness. Method: This study utilized the data from the 6th year of the Busan Education Longitudinal Study (BELS), and 2,941 middle school 3rd-grade students were selected as the final analysis subjects. Pearson's product-moment correlation coefficients were analyzed to examine the interrelationships among the variables, and independent sample t-tests were conducted to compare gender differences. Structural relationships between variables were analyzed using AMOS 26.0. Results: Firstly, significant positive correlations among instructional practices, family process, academic emotions, self-directed learning, and school happiness were observed. Secondly, there were significant gender differences in the sub-factors of instructional practices, such as teachers' enthusiasm and perceptions of teaching ability, as well as in the sub-factor of academic emotions such as subject interest, self-directed learning, and school happiness. Finally, academic emotions and self-directed learning were found to mediate the relationship between instructional practices, family process, and school happiness. Conclusion: The findings of this study indicated that both family process and instructional practices had a direct impact on enhancing students' school happiness, and also contributed to improving academic attitudes and promoting self-directed learning, ultimately enhancing overall school happiness. These findings can be utilized as valuable empirical data for exploring ways to enhance middle school students' school happiness.

국제동향 - APSF promotion activities and current issues in China

Wu, Qingyi 한국파렛트컨테이너협회 2014 파렛트 뉴스 Vol.75 No.-

본 원고는 지난 2014년 9월 24일부터 26일까지 3일간 태국 방콕에서 열린 제 9차 아시아파렛트시스템연맹(APSF) 정기총회 발표 원고로 중국물류구매연합회 파렛트분과위원회 주임 겸 북경과기대학 물류연구소 소장인 Qingyi Wu가 "중국에서 APSF 진흥 활동과 현 이슈"란 주제로 발표하였다.

漢語蘇州方言和合肥方言入聲字的比較研究

吳舒雅(Wu, Shu-Ya),李偉(Li, Wei),吳世畯(Oh, Se-Jun) 대한중국학회 2019 중국학 Vol.67 No.-

中國地域廣袤,方言種類繁多,但是,信息科技飛速發展的今天,方言正在悄然流逝,人們 對地方方言和傳統文化漸漸漠視和遺忘,方言的喪失必將導致傳統文化的失根,所以對方言的重視 和保護很重要。作為一名語言文化研究愛好者,希望通過研究比較更多的方言來讓人們更了解自己 的語言。方言作為母語,在我們學習第二語言的時候會直接影響到第二語言的習得,不僅存在積極 的促進作用,也存在消極的阻礙作用,這就需要我們對兩種語言進行深刻的了解和多方面的比較研究。蘇州和合肥分別歸屬於吳語區和江淮官話區,雖然是兩種方言,但是從地理位置上看,相互接連,可見兩種方言之間一定存在一些共同特點和差別。筆者就蘇州和合肥的語言上進行比較研究,選擇展現入聲字的中古音在兩地的今讀,分別從方言的聲母和韻母的對比進行分析和解說,以此來 找出兩種方言之間的差異。 However, with the rapid development of information technology, dialects are slipping away. People are gradually ignoring and forgetting local dialects and traditional culture. The loss of dialects will surely lead to the loss of traditional culture. As a language and culture research enthusiast, I hope to make people know more about their own language by studying and comparing more dialects. As the mother tongue, dialect will directly affect the acquisition of the second language when we learn the second language, which not only has a positive role in promoting, but also has a negative role in hindering, which requires us to have a deep understanding of the two languages and a comprehensive comparative study. Suzhou and Hefei belong to the wu-speaking area and the jianghuai guanhua area respectively. Although they are two dialects, they are connected with each other from the geographical position. It can be seen that there must be some common characteristics and differences between the two dialects. Based on a comparative study of the languages of Suzhou and Hefei, the author chooses to present the modern pronunciation of the Chinese ancient pronunciation of rusheng characters in the two places, and analyzes and explains the differences between the initial and final vowels of the dialects respectively, so as to find out the differences between the two dialects.

HCV-Specific Interleukin-21+CD4+ T Cells Responses Associated with Viral Control through the Modulation of HCV-Specific CD8+ T Cells Function in Chronic Hepatitis C Patients

Guo-Hua Feng,Fu-Sheng Wang,Ji-Yuan Zhang,Qing-Lei Zeng,Lei Jin,Junliang Fu,Bin Yang,Ying Sun,Tianjun Jiang,Xiangsheng Xu,Zheng Zhang,Jinhong Yuan,Liyuan Wu 한국분자세포생물학회 2013 Molecules and cells Vol.36 No.4

Interleukin-21 (IL-21)+CD4+ T cells are involved in the immune response against hepatitis B virus (HBV) by secreting IL-21. However, the role of IL-21+CD4+ T cells in the immune response against chronic hepatitis C (CHC) virus infection is poorly understood. This study aimed to investigate the role of IL-21+CD4+ T cells in CHC patients and the potential mechanisms. The study subjects in-cluded nineteen CHC patients who were grouped by viral load (low, < 106 RNA copies/ml, n = 8; high, > 106 RNA copies/ml, n = 11). The peripheral frequency of HCV-specific IL-21+CD4+ T cells was higher in the low viral load group and was negatively correlated with the serum HCV RNA viral load in all CHC patients. Meanwhile, IL-21+ cells accumulated in the liver in the low viral load group. In vitro, IL-21 treatment increased the expression of proliferation markers and cytolytic molecules on HCV-specific CD8+ T cells. In summary, these findings suggest that HCV-specific IL-21+CD4+ T cells might contribute to HCV control by rescuing HCV-specific CD8+ T cells in CHC patients.

Ways of Telicization in Chinese Resultative Compounds

Chenchen Song,Ke Wu 한국생성문법학회 2022 생성문법연구 Vol.32 No.3

In this paper, we build on Song (2018) and undertake a comparative study of the syntactic behavior of verb-resultative (V-R) compounds in three Chinese varieties: Standard Mandarin, Dongying Mandarin, and Wenzhou Wu. They systematically differ from each other in whether they require an obligatory post-V-R morpheme and, if they do, whether the choice of that morpheme is a purely grammatical issue. We find that while both Dongying Mandarin and Wenzhou Wu require a post-V-R morpheme (whereas Standard Mandarin does not), they sharply differ in the choice of said morpheme. We attribute this cross-dialectal variation to the way Chinese varieties telicize their resultative compounds and propose an analysis based on root syntax. After laying out our analysis, which is an extension of the analysis in Song (2018), we further discuss the parameterization of the three-way variation, arguing for a parameter hierarchy-based model over a flat model.

Registry-based stroke research in Taiwan: past and future

Cheng-Yang Hsieh,Darren Philbert Wu3,,Sheng-Feng Sung 한국역학회 2018 Epidemiology and Health Vol.40 No.-

Stroke registries are observational databases focusing on the clinical information and outcomes of stroke patients. They play an important role in the cycle of quality improvement. Registry data are collected from real-world experiences of stroke care and are suitable for measuring quality of care. By exposing inadequacies in performance measures of stroke care, research from stroke registries has changed how we manage stroke patients in Taiwan. With the success of various quality improvement campaigns, mortality from stroke and recurrence of stroke have decreased in the past decade. After the implementation of a nationwide stroke registry, researchers have been creatively expanding how they use and collect registry data for research. Through the use of the nationwide stroke registry as a common data model, researchers from many hospitals have built their own stroke registries with extended data elements to meet the needs of research. In collaboration with information technology professionals, stroke registry systems have changed from web-based, manual submission systems to automated fill-in systems in some hospitals. Furthermore, record linkage between stroke registries and administrative claims databases or other existing databases has widened the utility of registry data in research. Using stroke registry data as the reference standard, researchers have validated several algorithms for ascertaining the diagnosis of stroke and its risk factors from claims data, and have also developed a claims-based index to estimate stroke severity. By making better use of registry data, we believe that we will provide better care to patients with stroke.

The Development of Multiple Talents: Conceptualization and Empirical Studies

Wu, Wu-Tien The Korean Society for the Gifted 2002 영재교육연구 Vol.12 No.2

A 4-year joint research project(1999-2003), entitled "The Development of Multiple Talents(DMT)", has been designed and carrying out under the sponsorship of the National Science Council, R.O.C. (Taiwan). A 3-dimension construct is proposed for the DMT: form of talents (10 forms, mainly based on Gardner's theory of multiple intelligences), function of talents (3 functions, based on Sternberg's conception of successfulintelligence), and developmental stage (4 stages, from pre-school to senior high). To take an example of its empirical studies, Wu and Chien (2000), based on a renovated conception of personal intelligence, developed the "Personal Intelligence Inventory" (PII). By means of the PII, it was found that there were some personal intelligence differences between gifted and regular pupils; however, gifted group was not as superior as on academic performance to the regular one (Wu & Chien, 2000). It was also found that there were significant relationships between pupils' personal intelligence and school adjustment in both groups (Tsai & Wu, 2000).

Exploring the low PM2.5 exposure routes for bicycle commuters in Taipei and Seoul by machine learning models - a pilot study

Tzong-Gang Wu(Tzong-Gang Wu),Bang-Hua Chen(Bang-Hua Chen),Kiyoung Lee(Kiyoung Lee),Chang-Fu Wu(Chang-Fu Wu) 한국환경보건학회 2021 한국환경보건학회 학술대회 자료집 Vol.2021 No.2

Establishment of hybridization breeding of Ganoderma lucidum by protoplast monokaryogenesis method

Wu Jiaojiao,Fu Lizhong,Wu Xueqian,Xu Xiuhong,Li Haibo,Wu Qingqi,Wei Hailong,Cheng Junwen 한국버섯학회 2010 한국버섯학회지 Vol.8 No.4

Four Ganoderma lucidum strains, Chizhi 05, Jingda, Huizhou and Xinzhou, were screened out as hybrid parent in order to establish G. lucidum cross breeding system that based on protoplast monokaryogenesis method. Monokaryotic strains of each parental strains were obtained and mating type of each monokaryotic strains were determined. One to three monokaryotic strains that have different mating types were mated, and hybrids were identified by clamp connection observation and antagonist response. The results showed that the number of monokaryon came from Chizhi 05, Jingda, Huizhou and Xinzhou was 9, 14, 40 and 38, respectively. Only one mating type was obtained from Jingda, and two mating types were obtained from the other three strains, Chizhi 05, Huizhou and Xinzhou, respectively. Chi-square test showed that the ratio of two mating types of the three strains was 1:1. Fourteen monokaryotic strains of different mating types from 4 parental strains were select as a cross- breeding materia, and 17 hybrids were obtained, which were identified by clamp connection observation and antagonist response. This study proclaimed that the practicality of the hybridization breeding of G. lucidum by protoplast monokaryogenesis method.