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NI-HF ALLOYS : A NEW BONDING MATERIAL FRO SINGLE CRYSTAL SUPERALLOYS
Yunrong, Zheng,Zhongci, Ruan 한국재료학회 1995 Fabrication and Characterization of Advanced Mater Vol.1 No.2
Hf is a potential melting point depressant in the interlayer alloys used for brazing. The concentration of Hf in the interdendrites in the later stage of solidifcation for Hf-bearing superalloys is more than 10wt%. It may be considered that dendrites formed in the early solidification are brazed by interdendritic Hf-rich melts, therefore, the composition of the melts may be utilized as essential composition for the interlayer alloy. Eventually, the alloy containing Ni-18.6Co-4.5Cr-4.7W-25.6Hf(wt%) has been developed. The melting range of this alloy is $1195-1232^{\circ}C$. Microstructure of the ribbon prepared by the interlayer alloy consists of ${\gamma}+Ni_7Hf_2$ eutectic. The two phases have orientation relationship of $(001)_{Ni7Hf2}//(111)_{\gamma}, [101]_{Ni7Hf2}//[112]_{\gamma}$. Using the above ribbon material, transient liquid-phase(TLP) bonding of $1270^{\circ}C/48h$ was performed. During isothermal solidification of the bond, the content of Al and Ti increases and concentration of Hf decreases. Large amount of ${\gamma}+{\gamma}'$ eutectic formed which gets large quantity of Hf and restrains the formation of Hf-rich intermentallic compound in the bond. As a result, bonding free of Si and B for single crystal superalloys can be realized.
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Application of Project Quality Analysis: Case Study of Hengrui Pharmaceutical
Yunrong Zhang 동북아경상학회 2023 동북아경상연구 Vol.4 No.2
Purpose - Owing to the constant changes in the capital market, the accounts in the financial statements have gradually become more complex with the development of the capital market. Hengrui Pharmaceutical was chosen as the case study object to explore the analysis method for enterprise financial statements, hoping to provide a reference for enterprises and investors when using financial statements for analysis. Design/Methodology/Approach - This study takes data from the 2019-2022 annual report of Hengrui Pharmaceutical as the research object and uses case analysis, the Harvard analysis framework, project quality analysis, as well as other methods. Findings - The analysis of Hengrui Pharmaceutical Company’s annual report reveals that the Harvard Analytical Framework and project quality analysis can enable data users to better understand the company’s current situation and prospects. Research Implications - Few studies have used project quality analysis to analyze corporate financial data in the existing literature. This study combines the Harvard Analytical Framework and project quality analysis methods to analyze financial data. Furthermore, it discusses the feasibility of combining the Harvard Analytical Framework with a project quality analysis method and its application to financial data analysis. The research results have significance as a reference for the financial analyses of other enterprises and investors.
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VLIW 프로세서를 위한 소프트에러 검출 및 수정 기법
이운영 ( Yunrong Li ),이종원 ( Jongwon Lee ),허인구 ( Ingoo Heo ),권용인 ( Yongin Kwon ),이경우 ( Kyoungwoo Lee ),백윤흥 ( Yunheung Paek ) 한국정보처리학회 2011 한국정보처리학회 학술대회논문집 Vol.18 No.2
임베디드 시스템에서 저전력 공급, 칩사이즈 축소, 낮은 노이즈 마진 등 설계기법이 날로 향상 됨에 따라 소프트에러가 기하급수적으로 늘어나고 있다. 본 논문에서는 VLIW 아키텍처에서 치명적인 오류를 일으키는 이런 소프트에러들을 검출하고 수정하는 기법을 제안하고자 한다.
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庞云荣 ( Pang-yunrong ),王小也 ( Wang-xiaoye ),宿力嫄 ( Su-liyuan ) 경상대학교 교육연구원 2023 현대교육연구 Vol.35 No.2
儿童性侵害一直是一个备受社会关注的问题, 其中留守儿童更因其缺乏监护人的照看而面临着更大的风险。2023年8月教育部发布的教育统计数据显示, 2023年义务教育阶段农村留守儿童的数量是1550.56万。因此针对留守儿童性侵害的预防教育对于学校和社会来说是一个应该关注的重大课题。 对儿童实施性侵害行为具有严重的社会危害性, 并且也具有刑事违法性, 给受害者的身体与心理都造成很大的伤害。针对儿童性侵害现象, 我们不仅应着眼于如何惩治犯罪, 更应该注重性侵害的预防教育, 防患于未然。中国目前有相对完善的刑法体系来惩治性侵犯罪, 但是在预防教育方面仍有所不足, 尤其在留守儿童的性侵害预防教育方面还有很大的发展空间。 性侵害预防教育同时也是全球范围的重要课题。怎样正确地教育儿童看待性和性侵害, 怎样在缺失家长监护的情况下教育好孩子正确处理此类风险更是一个挑战。性侵害预防教育是性教育的一个分支, 本文将试从学校角度探究对于留守儿童性侵害的预防教育, 从根源减少性侵害的风险。 Child sexual abuse has always been a major concern in society, and left-behind children are at greater risk due to their lack of guardian care. According to education statistics released by the Ministry of Education in August 2023, the number of left-behind children in rural areas in compulsory education in 2023 is 15,505,600. Therefore, the prevention of sexual abuse of left-behind children is a major issue that schools and society should pay attention to. Sexual abuse of children is a serious social hazard and a criminal offense, causing great physical and psychological harm to the victim. In response to the phenomenon of child sexual abuse, we should not only focus on how to punish the crime, but also pay attention to the prevention and education of sexual abuse, so as to prevent it from occurring. At present, China has a relatively complete criminal law system to punish sexual assault crimes, but there are still some deficiencies in prevention education, especially in the prevention of sexual assault education for left-behind children. Sexual assault prevention education is also an important issue on a global scale. It is a challenge to properly educate children about sexual and sexual assault, and how to properly handle such risks in the absence of parental supervision. Sexual assault prevention education is a branch of sex education, and this paper will try to explore the prevention education of sexual abuse of left-behind children from the perspective of schools.
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