http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
세리아 안정화 지르코니아의 제조 및 특성(I) : CeO<sub>2</sub>첨가량 변화에 따른 Ce-TZP의 기계적 특성
정승화,강종봉,Jung, Seung-Hwa,Kang, Jong-Bong 한국재료학회 2010 한국재료학회지 Vol.20 No.7
The usual ceramic process of mixing and milling in state of oxides $ZrO_2$ and $CeO_2$ was adopted in this study in a wet process to manufacture Ce-TZP. $CeO_2$-$ZrO_2$ ceramics containing 8~20 mol% $CeO_2$ were made by heat treatment at $1250\sim1500^{\circ}C$ for 5hr. The maximum dispersion point of every slurry manufactured with a mixture of $ZrO_2$ and $CeO_2$ was neat at pH10. A stable slurry with average particle size of 90 nm can be manufactured when it is dispersed with the use of ammonia water and polycarboxylic acid ammonium. The sintered Ce-TZP ceramics manufactured with the addition of $CeO_2$ in a concentration of less than 10 mol% progressed to the fracture of the specimen due to the existence of a monoclinic phase of more than 30% at room temperature. More than 99% of the tetragonal phase was created for the sintered body with the addition of $CeO_2$ beyond 18 mol%, but the degradation of the mechanical properties on the entire specimen was brought about due to the $CeO_2$ existing in a percentage above 3%. Consequently, the optimal Ce-TZP level combined in the oxide state was identified to be 16 mol% of $CeO_2$ contents.
MCT를 이용한 공인중개사의 도덕적 판단력에 관한 연구
정승화(Seung-Hwa Jung),신은정(Eun-Jung Shin) 건국대학교 부동산도시연구원 2018 부동산 도시연구 Vol.10 No.2
공인중개사의 윤리적 판단은 전문자격사와 전문직업인, 사회구성원으로서 중요한 요소임에도 불구하고 이를 평 가하는 척도는 매우 부족한 실정이며 제고방안에 대한 연구도 미흡한 실정이다. 따라서 본 연구는 이러한 필요성에 입각하여 공인중개사의 도덕적 판단력과 영향요인들에 대하여 고찰하고 이를 기초로 공인중개사의 윤리의식 제고방 안에 효과적인 방향을 제시하는데 도움이 되는 자료를 제공하는 것을 목적으로 한다. 이를 위하여 도덕성 측정 도구 중의 하나인 도덕 판단력 검사(Moral Competence Test)를 활용하여 2017년 8월 서울특별시의 개업공인중개사를 대 상으로 설문조사하여 분석하였다. 도덕적 판단력을 종속변수로 다중회귀분석한 결과, 연령이 높을수록 도덕적 판단 력이 낮아지는 것으로 분석되었고, 실제소득보다 낮은 수준으로 신고하여 간이과세자가 되는 간이과세자일수록 도 덕적 판단력이 낮아지는 것으로 분석되었다. 본 연구는 공인중개사의 윤리의식에 대하여 도덕적 판단력이라는 형태 로 계량화하였다는 점에서 그 간의 연구와 차별성이 있다. The moral judgments of real estate agents are important factors for professionals and social members carrying out real estate transactions. However, until now, neither the evaluation of the moral consciousness nor the research for its improvement have been sufficient. Therefore, this study examines the moral judgment and factors influencing that of real estate agent. The purpose of this paper is to provide an effective direction for raising moral awareness of real estate agents. This study was conducted by surveying real estate agents in Seoul in August 2017 using the Moral Competence Test(MCT), one of the measuring tools of morality. After multiple regression analysis of moral judgment into dependent variables, a negative correlation was found between moral judgment and the age of certified realtors. In addition, lower moral judgment was found in the low income group of respondents, and the moral judgment of simplified taxpayers was lower than that of the general taxpayer groups. However, this study has limitations as it fails to reflect many other factors that affect moral judgment.
앉은 자세에서 방석센서를 이용한 요통환자 골반가동성 측정의 신뢰도와 타당도
정승화 ( Seung-hwa Jung ),박대성 ( Dae-sung Park ) 대한물리의학회 2020 대한물리의학회지 Vol.15 No.2
PURPOSE: Postural and structural asymmetry due to muscle imbalances around the lower back and pelvis are the causes of back pain. Muscle imbalances in patients with chronic low back pain affect the pelvic tilt and movement, and it is necessary to assess the pelvic movement ability using the appropriate tools to determine the mediating effects of lower back pain. This paper reports the reliability and validity of the Sensbalance Therapy Cushion (STC) for pelvic movement and proprioception. METHODS: In this study, the Wii balance board (WBB) was used as a golden standard for pelvic movement measurements. FABQ, KODI, Myovision, and Pelvic movement were measured in 50 patients with chronic low back pain. The correlation between the lower-back muscle activity and pelvic movement was checked. The pelvic movement parameter was measured twice to determine the intra-rater reliability. RESULTS: The STC showed high test-retest reliability in the pelvic tilt measurements (ICC = .672 - .809). The testretest reliability of proprioception measurements (ICC = .588 - .859) and reaction time measurements (ICC = .542 - .836) were also high. The relationship between the WBB and STC showed a significant positive correlation with the pelvic tilt test (p < .01). The posterior pelvic tilt and lower-back muscle activity showed a significant negative correlation (p < .01). The pelvic left tilt and lower-back muscle activity showed a significant negative correlation (p < .05). CONCLUSION: The results revealed the high reliability and validity of the STC. Therefore, the STC can be used as an objective measuring device for evaluating pelvic tilt, proprioception, and reaction time in low back pain patients.