Copy-milled In-Ceram Alumina core와 Spinell core의 색과 불투명도 비교

배정선,방몽숙,Bae, Jeong-Sun,Vang, Mong-Sook 대한치과보철학회 1999 대한치과보철학회지 Vol.37 No.6

This study was performed to evaluate effect on color and opacity of 3 different copy-milled In-Ceram cores by glass infiltration and porcelain veneering. Color was evaluated by the $CIEL^*a^*b^*$ readings were recorded with a Colorimeter, Color difference value(${\Delta}E^*_{ab}$) was calculated and opacity was represented by the contrast ratio. The variance of each color parameter ($L^*,\;a^*,\;b^*$), color difference value, and opacity change after glass-infiltrated and after veneered with porcelain was compared. Three experimental groups were fabricated as follows. Group 1 (Alumina core) 15 Alumina blanks was infiltrated with originally marketed glass (A1) and veneered with porcelain(A1) Group 2 (modified Alumina core) : 15 Alumina blanks was infiltrated with its associated glass(S11) and veneered with porcelain(A1) Group 3 (Spinell core) : 15 Spinell blanks was infiltrated with originally developed glass(S11) and veneered with porcelain(A1). The results were as follows: 1. After glass infiltration, $L^*$ value showed decrease, $a^*$ value showed decrease only group 1(p<0.001) and $b^*$ value showed increase on group 1, increase on group 2, 3(p<0.001). 2. After porcelain veneering, $L^*$ value showed decrease(p<0.001), $a^*$ value showed increase on group 1, decrease on group 2(p<0.05) and $b^*$ value showed decrease on group 1, increase on group 2, 3 (p<0.001). 3. ${\Delta}E^*_{ab}$ between before and after glass infiltration was more than 13.77, and between after glass infiltration and after porcelain veneering more than 19.63. 4. After glass infiltration and porcelain veneering, Alumina showed the lowest $L^*,\;a^*$ value and highest $b^*$ value among 3 different groups (p<0.05). ${\Delta}E^*_{ab}$ between group 1-2, 1-3 was higher than that of group 2-3. 5. After glass infiltration, opacity showed decrease, Group 1 had the highest opacity(p<0.05), but no significant differences between group 2 and 3. Above results suggest that glass infiltration and porcelain veneering effects on color and opacity of In-Ceram core, and that modified In-Ceram Alumina uses single crowns or bridges like In-Ceram Spinell.

중학생이 지각한 부·모의 양육태도와 심리적 독립, 자기성찰지능이 학교적응에 미치는 영향

배정선(Bae, Jeong-Sun),윤채영(Yun, Chae-Young) 부산대학교 교육발전연구소 2018 교육혁신연구 Vol.28 No.3

연구목적: 이 연구에서는 중학생이 지각한 부·모의 양육태도와 심리적 독립, 자기성찰지능이 학교적응에 미치는 영향을 확인하고 그 상대적 기여도를 검증하고자 하였다. 연구방법: 이 연구는 울산시 소재 2개 중학교에 재학 중인 1학년 192명, 2학년 208명, 3학년 178명으로 총 578명을 대상으로 실시되었다. 수집된 자료는 상관분석과 단계적 중다회귀분석방법으로 결과를 도출하였다. 연구결과: 중학생의 학교적응은 다른 변인들과 정적 상관을 보였다. 그리고 학교적응에 영향을 미치는 변인은 자기성찰지능과 중학생이 지각한 부의 양육태도 순서로 나타났으며, 학교적응에 대한 상대적 기여도가 가장 높은 예측변인은 자기성찰지능이었고 부의 양육태도도 주요 예측변인인 것으로 확인되었다. 부·모와의 심리적 독립은 학교적응 전체와 그 하위변인과 유의미한 정적상관을 보였지만 학교적응과 그 하위변인에 대한 예측변인은 아닌 것으로 나타났다. 논의 및 결론: 이 연구 결과는 중학생의 학교적응을 위해 자기성찰지능을 함양시킬 수 있는 실제적 교육 환경과 학습여건 마련의 중요성을 시사한다. 또한 부의 긍정적인 양육태도의 중요성에 대한 인식 확산과 부의 양육태도 교육 프로그램 개발 및 실행이 필요하다는 사실을 시사한다. Purpose: The purpose of this study was to investigate the influence of perceived mother and father’s rearing attitudes, psychological separation, and intrapersonal intelligence to middle school students’ school adjustment in order to provide basic data for school counseling and guidance. Method: The subject for the study was 578 students of two middle school in Ulsan, and it consisted of 192 in 1st grade, 208 in 2nd grade and 178 in 3rd grade. The statistic analysis program(SPSS 22.0) was used for analyzing the obtained date from the research in correlation analysis and stepwise regression analysis. Results: The major results of the study were as follows. First, middle school students’ school adjustment was a significant positive correlation with perceived mother and father’s rearing attitudes, psychological separation and intrapersonal intelligence. Second, there has influence on middle school students’ school adjustment in the order of intrapersonal intelligence and perceived mother and father’s rearing attitudes. Moreover the impact of intrapersonal intelligence is the largest factor, and that of perceived father’ rearing attitudes is the next one to middle school students’ school adjustment. Conclusion: The results of the study implicated the importance of developing a practical educational environment and learning conditions that can develop intrapersonal intelligence for middle school students school adjustment. It also implied the need to spread awareness of the importance of positive father s rearing attitudes and to develop and implement the father s rearing attitudes education program.

학문목적 학습자를 대상으로 한 확장형 읽기 교육의 효과

배정선 ( Jeong Sun Bae ),손정호 ( Jeong Ho Sohn ) 연세대학교 언어연구교육원 한국어학당 2014 외국어로서의 한국어교육 Vol.41 No.-

As there has been a growing number of learners with academic purposes among Korean learners, there has been a lot of learners with difficulties in understanding the lessons of their majoring subjects accordingly. The cause of the difficulties is their familiarity with intensive reading in Korean reading class. Intensive reading requires accurate reading and understanding of a relatively short text is a good way to develop accuracy in reading. However it is not appropriate for reading a lot of reading materials concerning with their major and grasp the main points. therefore it is necessary 2 practicing extensive reading to read and understand the materials in Korean rapidly. Even though it has not been long that the extensive reading which has been widely used English education starts to be applied to Korean education, it is clear that extensive reading is helpful in Korean education as well. Thus, this study aims at finding out an appropriate way for Korean classroom through an experiment for a while and represents the effect. The experiment was done for 15 weeks with 31 learners and in class the practice and presentation on extensive reading and after class the learners chose a piece of reading material freely and write a log on a weekly basis. The researcher of this study explained the way and purpose of extensive reading throughly and let the learners practice without any help with a dictionary. Prior test to the experiment, the 8th week’s mid test and post test of the experiment were done to find out the improvement of the learners’ reading proficiency. A meaningful result came out from the T-test on both the prior test and post test. Especially the effect of education on the low performing learners was big and the effect on general understanding which is the main target of extensive reading was meaningful enough. With the result extensive reading is effective on improving reading ability for the low performing learners rather than the high performing learners, and proves that it is effective on general understanding rather than understanding minor things in detail. In addition, the survey represents that the emotional attitude toward extensive reading is very positive as well. This study proposes extensive reading as a way to improve reading ability of the Korean learners in the hope of active researches on the methods to apply the extensive reading to the Korean classroom in the future.

Copy-milled In-Ceram Alumina core와 Spinell core의 색과 불투명도 비교

배정선,방몽숙 전남대학교 치과대학 1999 전남치대논문집 Vol.11 No.1

This study was performed to evaluate effect on color and opacity of 3 different copy-milled In-Ceram cores by glass infiltration and porcelain veneering. Color was evaluated by the CIEL^*a^*b^* readings were recorded with a Colorimeter, Color difference value(ΔE^*_ab) was calculated and opacity was represented by the contrast ratio. The variance of each color parameter (L^*, a^*, b^*), color difference value, and opacity change after glass-infiltrated and after veneered with porcelain was compared. Three experimental groups were fabricated as follows. Group 1(Alumina core) : 15 Alumina blanks was infiltrated with originall marketed glass(A1) and veneered with porcelain(A1) Group 2(modified Alumina core) : 15 Alumina blanks was infiltrated with its associated glass(S11) and veneered with porcelain(A1) Group 3(Spinell core) : 15 Spinell blanks was infiltrated with originally developed glass(S11) and veneered with porcelain(A1) The results were as follows: 1. After glass infiltration, L^* value showed decrease, a^* value showed decrease only group 1(p<0.001) and b^* value showed increase on group 1, increase on group 2, 3(p<0.001). 2. After porcelain veneering, L^* value showed decreased(p<0.001), a^* value showed increase on group 1, decrease on group 2(p<0.05) and b^* value showed decrease on group 1, increase on group 2, 3 (p<0.001). 3. ΔE^*_ab between before and after galss infiltration was more than 13.77, and between after glass infiltration and after porcelain veneering more than 19.63. 4. After glass infiltration and porcelain veneering, Alumina showed the lowest L^*, a^* value and highest b^* value among 3 different groups (p<0.05). ΔE^*_ab between group 1-2, 1-3 was higher than that of group 2-3. 5. After glass infiltation, opacity showed decrease, Group 1 had the highest opacity(p<0.05), but no significant differences between group 2 and 3. Above results suggest that glass infiltration and porcelain veneering effects on color and opacity of In-Ceram core, and that modified In-Ceram Alumina uses single crowns or bridges like In-Ceram Spinell.