성인 남녀의 초음파 조영술로 측정한 간지방밀도와 혈청 간기능효소와의 상관성 연구

박윤정(Park Yun Jeong),송경희(Song Kyung Hee),노만수(Noh Man Soo),현화진(Hyun Wha Jin) 韓國營養學會 1998 Journal of Nutrition and Health Vol.31 No.1

Effect of compositional variation of dental MTA cements on setting time

Yun-Jeong Park(박윤정),Ju-Hee Kang(강주희),Seo-Hyeon(서현),Ho-Jun Song(송호준),Yeong-Joon Park(박영준) 대한치과재료학회 2021 대한치과재료학회지 Vol.48 No.2

The long setting time of dental MTA (Mineral Trioxide Aggregate) cement is a major disadvantage in clinical use. In this study, the setting time (ST) of nine commercial MTA cements was tested according to the ISO 6876:2012 standard (n = 5). Materials evaluated were ProRoot MTA (PR), Ortho MTA (Ortho), Retro MTA (Retro), Endocem MTA (Endocem), Endoseal MTA (Endoseal), One-Fil (OF), MTA Cem (MC), EZ-Seal (EZ), and Biodentine (BD). XRD and XRF analysis were performed to evaluate the effect of composition on ST. Kruskal-Wallis test as a non-parametric ANOVA followed by Duncan’s post hoc test was used for statistical analysis. The ST was PR > EZ > OF > Ortho > Retro > MC > Endoseal > BD > Endocem in decreasing order (p < 0.001). PR showed the longest (369.4 min) and Endocem showed the shortest (2.4 min) ST. Endocem (2.4 min), BD (16.0 min) and Endoseal (47.0 min) contained calcium carbonate. MC (48.8 min), Retro (43.6 min), Ortho (65.0), and OF (165.4 min), which had the next short setting time, contained dicalcium aluminate. In EZ (182.4 min), dicalcium silicate was the main crystalline phase rather than tricalcium silicate, which contributes to the early strength, and it contained calcium sulfate. Endocem, which showed the shortest setting time, showed the smallest d90 particle size of 6.12 μm. The information obtained from this study would be helpful in developing a composition for controlling the setting time of MTA cement and selecting a product with a setting time suitable for each clinical case.

헤어전문살롱 및 대형마트에서 모발화장품 구매이유와 차이

박윤정 ( Yun-jeong Park ),최수원 ( Su-won Choi ),어경선 ( Kyung-sun Eo ),양은진 ( Eun-jin Yang ),진용미 ( Yong-mi Jin ) 한국미용예술경영학회 2014 미용예술경영연구 Vol.8 No.1

As living standards of the individual is improved with rapid economic developments, importance of visual image of the individual is being magnified, along with change in consumption pattern of consumers around 2000. Hair is a part representing beauty, called as ‘the second face’, and standard of health. After exploring reasons and difference of consumers’ purchasing hair cosmetics in hair salons and major supermarkets and analyzing patterns of purchasing route according to general features of consumers, this research is to present a direction for developing marketing in the hair cosmetics market based on the analysis. For the purpose, a survey was conducted over male and female respondents in 20s and 30s living in Gyeonggido and Chungcheongbukdo. As a result, respondents put value on ‘cosmetics effect’ as a primary reason for purchase in both hair salons and major supermarkets. Considering general features of consumers, there was a meaningful difference in purchasing reasons by gender, marital status, occupation, and education level in hair salons, while a meaningful difference was found only by occupation in major supermarkets. For viable marketing strategies in the hair cosmetics market, active activities are needed to improve sales by means of development of specialized hair cosmetics and diagnostic apparatus and other tools for scalp and hair. Also, by cheap price and various products, consumers’ selective shopping and reasonable consumption should be induced from major supermarkets.

초등학생 아동의 대화 화제관리 능력의 발달

박윤정(Yun Jeong Park),최지은(Ji eun Choi),이윤경(Yoon Kyoung Lee) 한국언어청각임상학회 2017 Communication Sciences and Disorders Vol.22 No.1

Objectives: Conversational skills play an important role in social aspects such as the peer relationships and academic achievement of school-aged children. The purpose of this study was to investigate developmental differences according to grade for primary school students in the 1st, 3rd, and 5th grade. Methods: The participants were a total of 30 children, 10 children per grade. Conversation samples were collected individually by the examiner according to procedure of Hallym Conversation & Pragmatic Assessment Protocol. In terms of engagement indicator, the frequency of turn-taking, frequency of utterances per turn. Additionally, in terms of topic indicator, the total number of topics, frequency of turn per topic, rates of maintenance and rates of change were measured. Results: The results were as follows: in engagement indicator, significant difference was observed in the frequency of utterances per turn. In topic indicator, there were significant differences in the total number of topics, frequency of turn per topic, rates of maintenance, and rates of change. Conclusion: The results of this study showed that as school-aged children s grade increased they were able to converse over a given topic with more consistency. These results help elucidate the development of conversation in elementary school-children and can be used as materials for the assessment and intervention of children with disabilities. 배경 및 목적: 대화는 학령기 아동들의 또래 관계 형성 및 학업 성취 등의 사회적인 측면에 중요한 역할을 한다. 본 연구는 초등학생을 대상으로 대화에 참여하는 정도와 화제를 관리하는 능력의 발달적 차이를 살펴보고자 하였다. 방법: 연구 대상은 1학년, 3학년, 5학년 아동 각 10명씩 총 30명이었다. 모든 아동에게 함림 대화ㆍ화용 평가 프로토콜에 따라 대화 자료를 수집한 후, 대화 참여 지표인 대화차례 주고받기 빈도와 대화차례당 발화 수를 측정하였고, 화제 지표인 전체 화제 수, 화제당 대화차례 빈도, 화제 유지 비율, 화제 변경 비율을 측정하였다. 결과: 대화 참여 지표에서 대화차례당 발화 수는 집단 간 유의한 차이가 있었으나 대화차례 주고받기 빈도는 유의한 차이가 없었다. 화제 지표에서 전체 화제 수, 화제당 대화차례 빈도, 화제 유지 비율, 화제 변경 비율 모두 학년 집단 간 유의한 차이가 나타났다. 논의 및 결론: 초등학생은 대화에 참여하고 화제를 관리하는 능력이 학년에 따라 달라졌다. 학년이 높아질수록 자신의 대화차례에서 동일한 화제에 대해 더 많은 발화를 산출하고, 화제를 일관되게 유지할 수 있다는 것을 보여주었다. 이러한 결과는 초등학생의 대화 발달을 이해하는데 도움을 주고, 이후 장애아동의 대화 평가 및 중재에 필요한 자료로 활용될 수 있음을 시사해준다.

교사클릭 : 우리부서를 자랑합시다! ; 소수정예,하나님의 계획, 대미중앙교회 주일학교

박윤정 ( Park Yun Jeong ) 장로회신학대학교 기독교교육연구원 2004 교육교회 Vol.324 No.-

NCS를 활용한 전문대학의 헤어미용교육 실태분석 및 활성화 방안

박윤정(Yun-Jeong Park),진용미(Yong-Mi Jin) 한국인체미용예술학회 2016 한국인체미용예술학회지 Vol.17 No.2

At a point in time when specialized community colleges recently reform their education system into field-oriented one in order to solve requirement mismatch between industry and community college, this study is intended to present a plan of curriculum development for field and competency-oriented specialized beauty artists by application to hairdressing education, utilizing NCS after grasping the actual condition and problem through objective sample and field survey regarding the necessity and scope of education in the cosmetology curriculum of community college. For the purpose of empirical survey in this study, questionnaires were distributed to domain experts having more than 10 years of work experience in the hairdressing field, including hairdressing-related workers and educators around Seoul⋅Gyeonggi province, and final 66 questionnaires were used as data for analysis through SPSS 21.0. And the results are as follows. Among hairdressing major subjects, haircut was thought to be very important. And among liberal arts subjects, image making was thought to be very important. According to the results of examining the importance of hairdressing education, an education that industry wants the most is an ‘education making it possible to actively cope with specialization’ and a subject requiring an improvement was ‘technical aspect and practical technique’, and ‘psychology’ was needed as a related subject. And it was shown that a subject relating to character and manner was ‘very necessary.’ Through the above-mentioned results, it was possible to verify that major subjects in community college on the basis of NCS were recognized to be important. However, the need for modifying and improving some liberal arts subjects and the importance of technical aspect and practical technique was felt since hairdressing education was a field which focused on practical business affairs. And it was possible to conclude that a comprehensive and professional review and study should be made also in education contents and methods so as to have expertise in accordance with industry’s requirements. And with regard to hairdressing curriculum in community college.

동계용 멜론의 하계 수경재배 시 양액공급조절이 생육과 품질에 미치는 영향

박윤정(Yun Jeong Park),황미란(Mi Ran Hwang),박태우(Tae Woo Park),강남준(Nam Jun Kang) 한국원예학회 2016 한국원예학회 학술발표요지 Vol.2016 No.5

Chitosan sponge 의 골재생시스템으로의 응용

박윤정(Yoon Jeong Park),박시내(Si Nae Park),이주연(Ju Yeon Lee),임고은(Go Eun Lim),이승진(Seung Jin Lee),신승윤(Seung Yun Shin),이상철(Sang Chul Lee),김경화(Kyoung Hwa Kim),이용무(Yong Moo Lee),정종평(Chong Pyoung Chung) 한국약제학회 1998 한국약제학회 총회 및 학술대회 요지집 Vol.- No.28

N/A N/A

노광 장치 시뮬레이터 개발

김대정,박윤정,정태호,Kim, Dae Jeong,Park, Yun Jeong,Jung, Taeho 한국시뮬레이션학회 2017 한국시뮬레이션학회 논문지 Vol.26 No.4

우리나라의 반도체와 디스플레이 산업의 발전으로 해당 분야에 대한 인력 수급이 더욱 활발해지고 있다. 이에 따라 학부의 반도체 수업에서는 기존의 이론에 최신 기술 동향뿐만 아니라 현장 중심형 실무 인재 양성을 위해 반도체 제작 공정도 심도 있게 다루고 있다. 하지만, 반도체 공정은 클린룸 안에 설치된 장비들과 고가의 재료들이 필요하기 때문에 대규모로 진행되는 학부 교육에서 공정 실습이 제공되기는 어렵다. 이 한계를 극복하기 위해 실제 공정이나 공정 이론을 시각화한 동영상 등이 보조 자료로서 사용되고 있으나, 실습으로 대체할 교보재로서는 부족하다. 본 연구에서는 이론 중심의 학부 교육에 간접적인 반도체 공정 실습을 제공하기 위해 3차원 기반의 가상 클린룸을 구현하고, 반도체 공정에서 가장 많이 사용되는 노광 장비에 대한 시뮬레이터를 구현하여 사진 공정 베이에 설치하였다. 본 연구에서 구현하는 공정 시뮬레이터는 학부 교육에서 다루는 이론을 시각화하는데 중점을 두었으며, 포토 마스크와 실리콘 웨이퍼의 정렬과 노광 공정의 진행 따른 감광제의 국부적 변화를 시각화하였다. 개발된 시뮬레이터는 모바일 기기 등과 같은 저성능의 컴퓨팅 환경에서도 실행될 수 있도록 메모리 사용을 최소화하여 실용성을 극대화 하였다. With the advances in and expansion of the semiconductor and display businesses in Korea the demand of the engineers in such fields is increasing. Keeping pace with the trend, the semiconductor courses in undergraduate not only include the newest technologies in addition to the fundamental theories but fabrication related technologies as well in order to produce engineers with practical knowledge. However, since semiconductor fabrication requires expensive equipment and materials in a clean room, laboratory class can't be provided in undergraduate. To overcome this limitation actual fabrication processes are recorded in video and played in class. In addition, 3D visualization of fabrication processes can be used.

부산 기장 연안에서 저인망으로 어획된 어류 군집의 계절 변화

황철희,박윤정,Hwang, Choul-Hee,Park, Yun Jeong 한국수산과학회 2017 한국수산과학회지 Vol.50 No.4

The seasonal and interannual variations in fish assemblages in the coastal waters off Gijang were examined with an otter trawl from 2015 to 2016. A total of 59 fish species was collected during the study period. The dominant species were Caelorinchus multispinulosus, Clupea pallasii pallasii and Chelidonichthys spinosus. Seasonal changes in fish assemblages appeared to be distinct in the study area. The fish assemblages in summer and autumn were clearly distinguishable from those in other seasons, and the largest numbers of species and individuals were captured in winter and summer, respectively. Because fish assemblages are closely related to changes in water temperature, long-term changes in water temperature can have a significant impact on the productivity of offshore fisheries by changing fish species composition, habitat migration, and growth rate of fish.