정향 꽃봉오리 에탄올 추출물의 Porphyromonas gingivalis 내독소를 처리한 사람 치은섬유모세포에 대한 항염 효과

임윤경,유소영,오하나,이대성,국중기 대한치과재료학회 2023 대한치과재료학회지 Vol.50 No.1

This study was conducted to evaluate the cytotoxic and anti-inflammatory effects of the ethanol extract of Syzygium aromaticumL. (clove) buds. The cytotoxicity test was performed by cell counting method using hTERT-hNOF cells, a human immortalizedgingival fibroblast cell line. To test the anti-inflammatory effects, the hTERT-hNOF cells were treated with lipopolysaccharide(LPS) extracted from Porphyromonas gingivalis KCOM 2804 (PgLPS) and ethanol extract of clove buds. The expression levelsof PGE2, IL-6, and IL-8 were measured by enzyme-linked immunosorbent assay. The cytotoxicity test data showed a cell viabilityof ≧ 82% in hTERT-hNOF cells treated with 10 to 80 µg/mL of the ethanol extract of clove buds. The anti-inflammatory testdata showed that the expression of PGE2 by PgLPS treatment was reduced to the level of the negative control group by treatmentwith 10 µg/mL or more of the ethanol extract of clove buds. In group treated with PgLPS and 40 µg/mL of clove bud ethanolextract, the expression levels of IL-6 and IL-8 in were inhibited by 75% and 77%, respectively (p<0.05), compared to the positivecontrol (PgLPS treatment) group. These results suggest that the ethanol extract of clove buds can be used in developing oralhygine products for preventing periodontal disease.

네일매장의 점포속성이 재방문의도에 미치는 영향 - 단독 매장을 중심으로 -

임윤경,곽태기 한국의상디자인학회 2020 한국의상디자인학회지 Vol.22 No.2

The purpose of this study was to clarify that the effect of consumer’s perception of nail store attributes has on intent to revisit (focus on independent stores) by performing quantitative research. The importance of nail stores is increasing with sales amounts and the number of workers, however, previous research in this area is not complete. The reason that this qualitative research should be done before the quantitative research is due to the scant theoretical background in this matter. As the nail market is steadily increasing, determining the factors to make a successful and influential store leading to revisits is very meaningful both academically and in business. For the quantitative study, consumers from 20 years old to less 60 years old who had purchased nail service at independent nail stores were included in the survey. Quota sampling was adopted in the areas where the independent nail stores were located from May 10th to May 30th, 2019, and 262 questionnaires were collected, and those containing insincere respondences were excluded. The most important nail store attribute was reliability (store name value, relationship with workers and A/S) and then the physical environment, economics, product, and promptness. The result depended on demographic factors- younger and lower-income respondents put a premium on the physical environment, promptness, and economics, on the other hand, older and higher-income respondents placed a priority on reliability. The correlation analysis result is that all store attributes (reliability, physical environment, economics, promptness, product) show a statistical significance. A multiple regression analysis was conducted to determine the effects of nail store attribute importance on revisit intention. Promptness, economics, and the physical environment have a statistically significant effect on the consumer’s revisit intention.

시각적 일과표 사용이 초등학교 자폐아동의 장소이동시간 문제 행동 발생에 미치는 영향

임윤경,이소현 한국정서.행동장애아교육학회(구.한국정서학습장애아교육학회) 2003 정서ㆍ행동장애연구 Vol.19 No.3

The purpose of this study was to investigate the effects of visual schedules to reduce problem behaviors of students with autism during transition. Three students with autism who have shown severe behavioral problems at transition time participated in the study. After participants were informed their schedules from the teacher, they attached the schedule cards on the left side of their own schedule book, which indicated the schedule is coming up, according to the class schedule. Before transition from on place(e.g., classroom) to the other place(e,g., cafeteria), they checked their schedules. After completing transition, they shifted the schedule card to the right side of the schedule book, which indicated that the schedule was done. When problem behaviors happened during the intervention period, they were immediately directed to reconfirm their schedule books. Using a multiple probe baseline design across subjects, the frequency of children's problem behaviors were measured. Follow-up data were collected three weeks after the termination of the intervention. The results obtained from the present study is that the frequency of the problem behaviors were reduced through intervention using visual schedules across all three subjects and maintained after a three week period. In conclusion, this study shows that using visual schedules is effective on reducing problem behaviors of students with autism during the classroom transition.

영어교과 마이크로티칭과 실제 영어 수업에 대한 예비교사들의 성찰 연구

임윤경 학습자중심교과교육학회 2019 학습자중심교과교육연구 Vol.19 No.7

This paper was motivated by the needs to identify teaching abilities recognized by pre-service English teachers in an English education program. This study examines (1) the differences between microteaching and real classroom teaching experienced by pre-service English teachers and (2) what elements of teaching abilities they pay attention to in their own lessons. The pre-service English teachers were asked to reflect on both of their microteaching and real English class they had conducted. Drawing on the inductive logic of qualitative study, the reflective essays were collected from 21 pre-service teachers who completed their English teaching practicum. One of the salient characteristics of real classroom teaching was the students’ presence, which seems to affect the pre-service teachers’ lesson planning and classroom management. In exploring which aspects the pre-service teachers focus on in the real classroom, the criteria of the classroom management turned out to be the most challenging to the beginning pre-service teachers. Regarding the affective aspects which cannot be directly observed in microteaching evaluation, reflective approach may be used as part of the evaluation tools that can probe the unobservable qualifications. This paper suggests a few implications for teacher education programs to improve microteaching training and its evaluation tools to better assess pre-service English teachers' teaching performance. 본 연구의 목적은 영어교과 마이크로티칭과 실제 영어 수업 환경의 차이점들을 비교하고 이 두 환경에서 요구되는 교사의 능력이 어떻게 다른지를 예비 영어교사들의 시점에서 분석해봄으로써 영어 교과 마이크로티칭의 평가도구를 개선할 방안을 모색해 보는 데 있다. 이를 위해 본 연구에서는 국내 한 대학의 영어교육과에 재학하는 21명의 예비영어교사들을 대상으로 교생실습을 마치고 성찰지를 작성해서 제출하도록 했다. 그들이 교생실습 기간 동안 경험한 실제 영어수업에서 요구되는 교사의 능력과 그 전 학기에 실시했던 마이크로티칭 경험을 비교/대조하는 내용을 담은 성찰일지를 수집하여, 귀납적 논리체계에 근거해서 독립된 항목을 추출하는 방식으로 자료를 분석했다. 마이크로티칭과 일반 영어수업과의 가장 큰 차이점으로 나타난 것은 실제 학생들과의 상호 작용 여부였다. 실제 영어수업에서 예비교사들이 주목한 수업 능력은 수업 운영과 수업 기술, 수업 계획의 요소들 순이었다. 이에 대한 마이크로티칭 지도 및 평가의 개선 방안들이 제시되었고, 교사의 전문성을 계발하는 데 있어서 성찰법의 중요성이 논의되었다.

골유도재생술용 차폐막 적용을 위한 polyvinylidene fluoride와 polyacrylonitrile 나노섬유의 평가

임윤경,김찬,이승훈,유상준,이원표,이경현,김희중,국중기 한국섬유공학회 2019 한국섬유공학회지 Vol.56 No.3

Recently, various nanofiber membranes for guided bone regeneration using electrospinning methods have been reported. The purpose of this study was to evaluate the in vitro osteogenesis efficiency of electrospun polyvinylidene fluoride (PVDF) and polyacrylonitrile (PAN) membranes. Nano sized topography, mechanical properties, and biological evaluations were performed to compare the PVDF and PAN nanofiber membranes with the commercially available polytetrafluoroethylene (PTFE) membrane. The cytotoxicities of these membranes were evaluated using the MTT assay. Alkaline phosphatase (ALP) activity and the calcium concentration were determined to evaluate the in vitro bone formation activities of the above-mentioned membranes. Expression levels of the osteoblast differentiation marker genes (RUNX2, OSX, OCN, and COL1A1 genes) were determined using the real-time quantitative polymerase chain reaction (RT-qPCR) and enzyme-linked immunosorbent (ELISA) assay. Approximately 300 nm three-dimensional porous structures, with pores connected/extending from the surface to the rear/bottom were observed in each PVDF and PAN nanofiber membrane using a scanning electron microscope. The strength and elongation of the porous structures were superior to those seen in the PTFE membrane. The cell viability, ALP activity, and calcium concentration were higher in these nanofiber membranes as compared to those in the PTFE membrane. RT-qPCR and ELISA assay analysis also showed that the nanofiber membranes had better osteogenesis efficiencies as compared to the PTFE membrane after 7 days. The results in this study demonstrate that the electrospun PVDF and PAN nanofiber membranes could potentially function as barrier membranes for bone tissue regeneration.

승객 특성과 드론 택시 이용의도: 인지된 혜택과 비용의 매개효과

임윤경,김경진 한국상품학회 2023 商品學硏究 Vol.41 No.1

드론 택시의 상용화가 목전에 다가왔다. 그런데 드론 택시에 관한 연구는 대체로 기술적, 법규적 주제에 편향되어 있다. 따라서 본 연구는 드론 택시에 대한 승객의 인식과 태도에 주목했다. 구체적으로, 승객의 특성에 따라 드론 택시의 이용의도가 어떻게 달라지느냐를 탐구하였다. 승객의 특성을 혁신성과 동조성으로 나누었고, 매개변인으로 드론 택시의 지각된 편익 및 비용, 그리고 사회적 영향력을 제안하였다. 지각된 편익은 유용성, 용이성, 유희성으로 구성하였고, 지각된 비용은 화폐적, 심리적, 행동적 비용으로 구성하였다. 즉 승객의 특성이 편익 및 비용에 대한 인식에 영향을 미치고, 이에 따라 드론 택시의 이용 의도가 결정된다는 경로 모형을 제안하였다. 연구 결과, 승객의 혁신성은 이 경로 모형에 유의한 독립변수가 아니었다. 승객의 동조성은 유용성과 유희성, 화폐적 비용, 심리적 비용, 그리고 사회적 영향력에 효과를 미쳤다. 그리고 용이성, 유희성, 화폐적 비용, 그리고 사회적 영향력은 드론 택시의 이용의도에 효과를 미쳤다. 이 결과는 승객들이 드론 택시를 혁신적인 교통수단이라기보다는 특별하고 흥미로운 경험이라고 인식할 가능성을 암시한다. 그리고 드론 택시의 확산을 위해서 혁신적인 소비자가 아니라 영화나 드라마의 PPL 등을 활용하는 것이 더 바람직하다는 시사점을 준다. 드론 택시의 이용의도에 직접적인 영향을 주는 기능적 편익과 경험적 편익을 늘리고, 화폐적 비용은 줄이는 정책이 효과적일 것이다. 의외로 드론택시에 대한 행동적 비용과 심리적 비용은 이용의도에 부정적 영향을 미치지는 않았다. 즉 소비자는 요금만 적당하다면 흥미로운 드론 택시를 즐겨 이용할 마음의 준비가 되어 있는지도 모른다.

네일샵의 점포속성에 관한 질적연구 - 단독 매장을 중심으로 -

임윤경,곽태기 한국의상디자인학회 2019 한국의상디자인학회지 Vol.21 No.3

The purpose of this study was to clarify store attributes for nail stores (focusing on independent stores) by qualitative research. Even though the nail market is showing a steady increase in terms of sales amounts, and the number of stores, related studies were very rare. Meanwhile, as long as the nail market is growing, many stores are suffering from bad business performance because of new nail stores are relatively easier to open than beauty or hair stores, but the nail stores don't have a discriminated marketing strategy. As nail the market is rapidly increasing, finding factors that led to success for nail stores is very meaningful, both for academics and business. The reason that qualitative research should be done before the quantitative research is due to scant theoretical background concerning this matter. For this qualitative research, 8 experts who are operating nail stores as an owner or a manager or a professor at a university who had over 5 years of related working experience were included. The attributes for nail stores were derived using one-to-one in-depth interviews conducted from March 3 to May 31, 2019. As a result of the qualitative studon the attributes for nail stores, it turned out that there were 5 factors– physical environment, product, speed, profitability, and reliability. Physical environment, product, and profitability were mentioned in most related surveys, but some details showed that and speed and reliability have been newly highlighted. Many unknown issues that were not easy to acquire from common academic research are included. After this study, I hope that many marketers may get basic conditions to apply to real businesses and that they can use it as effective data for the following quantitative research.

Interactivity attributes: a new way of thinking and describing interactivity(CHI 2009 Note)

임윤경,이상수,이광영 한국HCI학회 2010 한국HCI학회 학술대회 Vol.2010 No.1

요부 안정화 운동과 가상현실프로그램이 20대 정상 성인의 균형능력에 미치는 효과 비교

임윤경,정은영,이선,문소영,이현민 한국지역사회건강관리협회 2013 대한건강과학학회지 Vol.10 No.1

Microteaching in Connection with Real Classroom Teaching under Reflection: Focused on Preservice Teachers in Korean EFL Context

임윤경 대한영어영문학회 2021 영어영문학연구 Vol.47 No.2

This study aimed to explore preservice EFL teachers’ reflection on the microteaching task by comparing it with their reflection on teaching in the EFL classroom after a semester. This research examined major features the preservice EFL teachers focus on in their microteaching and changes in the areas of reflection after they experience classroom teaching during the teaching practicum. The study participants were 36 undergraduate students who enrolled on an English teaching methodology course at a university in Korea. The data collected from these preservice EFL teachers included reflective essays on their own microteaching and post-practicum reflective reports. The findings revealed that the most frequently commented areas regarding microteaching performance were nonverbal communication, language ability, and managing the learning environment whereas for lessons during the practicum classroom teaching, managing the learning environment, planning & timing, and effective teaching techniques were the main areas of their focus. The author proposes some suggestions for reflective practice in EFL teacher education.