장기미집행 공원 부지를 활용한 주거 개발 방안

박현정(Park, Hyun-Jung),양우현(Yang, Woo-Hyun) 한국주거학회 2018 한국주거학회 학술대회논문집 Vol.30 No.1

The purpose of this investigation is to propose a planning method for the possibility of accepting a housing as a utilization plan of a long term unexecuted park site. Currently, the park has been neglected due to lack of financial resources of the local government. In 2009, It is possible to develop a certain area as a non-park facility under condition that the park is built and donated. In the several cities, various projects for development of parks are being carried out, so the standard for securing the publicness of the park is needed. So, I would like to solve the problems such as social conflict with existing residents due to privatization of the park site and formation of park without considering the conditions of the park, and to study how to effectively utilize the park. To do this, we examine the conditions such as location condition, proximity to public transportation, site size, topography, and contact conditions. And we will present realization methods such as land use, development density, appropriate development method considering landscape, efficient housing type, and type of community facility.

부모를 위한 아동학대 예방 가정방문 프로그램 효과 메타분석

박현정,김현경,Park, Hyun-Jung,Kim, Hyun Kyoung 한국아동간호학회 2017 Child Health Nursing Research Vol.23 No.4

Purpose: This study was done to conduct a meta-analysis of articles describing randomized controlled trials which showed substantiated effects for home-based child abuse prevention programs for all parents. Methods: The articles regarding child abuse prevention programs for parents were investigated using the systematic review method. A literature search was conducted in PubMed, CINAHL, PsycINFO, Cochrane central library, Eric, and RISS on material published. Article searches and quality appraisal through RoB (Risk of Bias) yielded 14 records. Results: The total random effect size was 0.344 (Parents outcome, 0.333; Child outcome, 0.310; Environment, 0.275). The home based intervention for parents was effective for prevention of potential child abuse. Conclusion: This study supports the effectiveness of health care professional directing child abuse prevention programs for all parents whose children are in the early years of life including during the period of pregnancy.

인터넷, 따라하면 쓸 수 있나

박현정,Park, Hyeon-Jeong 대한출판문화협회 1996 출판저널 Vol.190 No.-

인접면 치근 인공우식병소의 깊이 평가: 구내 일반 방사선사진과 디지털 방사선사진과의 비교

박현정,조봉혜,Park Hyun-Jung,Cho Bong-Hae 대한영상치의학회 2003 Imaging Science in Dentistry Vol.33 No.1

Purpose : To investigate the reproducibility of the conventional and digital radiographs to determine the depth of approximal root cavities. Materials and Methods : A total of 80 artificial root cavities were prepared in the approximal surfaces of premolars, maxillary and mandibular molars. Standardized radiographs were taken at the baseline (0° horizontal and 0° vertical) and at a horizontal angulation of 10° in both mesial and distal directions. Radiographic cavity depths were measured by both conventional and digital radiographs. Results: At 0° horizontal angulation, no statistically significant differences could be determined between the results of conventionally and digitally determined radiographic depths with respect to the actual cavity depths in all premolar, maxillary, and mandibular molar groups. All conventional and digital radiographic depths at both 10° mesial and distal angulations showed statistically significant increases in depth compared to the actual cavity depths (p < 0.05), with the exception of digital radiographic depth at 10° mesial angulation for premolars. There were no statistically significant differences between conventional and digital radiographic depths for all groups. Conclusion: The present study suggests that both conventional and digital radiographs provide reproducible assessment of the depth of the approximal root cavity. But horizontal X-ray beam movements are likely to result in increase in radiographic cavity depth.

솔젤법에 의한 다이옵사이드 생체 세라믹의 표면코팅 및 지르코니아 기판의 생체활성 증진

박현정,이종국,Park, Hyunjung,Lee, Jong Kook 한국결정성장학회 2022 한국결정성장학회지 Vol.32 No.5

Diopside (CaMgSi₂O₆) is known to have high bioactivity as well as excellent mechanical properties. In this study, we tried to improve the bioactivity of zirconia ceramics by surface coating of diopside and its bioactivity was investigated through an in vitro test. Surface coating on zirconia substrate was prepared by sol-gel method using a diopside sol which was prepared by dissolving Ca(NO₃)₂·4H₂O, MgCl₂·6H₂O and Si(OC₂H₅)₄ in ethanol with a fixed molar ratio and then hydrolysis. To examine the bioactivity of diopside coating, we examined the surface dissolution and the precipitation of new hydroxyapatite particles through in vitro test in SBF (Simulated Body Fluid) solution. Dense and thick diopside coating layers could be fabricated on zirconia substrate by sol-gel method. Also, we confirmed that they contained high bioactivity from the in vitro test, indicated the precipitation of hydroxyapatite particles after the 14 days immersion in SBF solution. In addition, we checked that the bioactivity of diopside coated layers was dependent on the repeated coating cycle and coating thickness.

간호대학생의 임상실습 스트레스, 전공만족도 및 간호 전문직관의 관계

박현정,오재우,Park, Hyun-Jung,Oh, Jae Woo 한국디지털정책학회 2014 디지털융복합연구 Vol.12 No.12

본 연구는 간호 대학생을 대상으로 임상실습 스트레스, 전공만족도 및 간호 전문직관의 관계를 알아보고, 간호대학생의 바람직한 간호 전문직관 정립을 위해 나아갈 간호교육의 방향을 모색하고자 한다. 본 연구는 상관성 조사연구로써 간호학과에 재학 중인 학생 중 임상실습 경험이 있는 간호 대학생 3,4학년 210명을 대상으로 실시하였으며, 자료수집기간은 2014년 4월 1부터 5월 30일까지였다. 자료는 SPSS Program 20.0을 이용하여 t값, Correlation coefficient, regression 으로 분석하였고, AMOS로 확인적 요인분석을 하였다. 간호대학생의 전공 만족도에 임상실습 스트레스가 영향력을 나타내었으며 설명력은 30%였고, 간호 전문직관에는 임상실습 스트레스가 가장 큰 영향력을 나타내었으며, 설명력은 53%였다. 결론적으로 자신에 대한 충분한 이해와 준비를 바탕으로 간호학의 가치를 알고 만족할 수 있도록 돕는 지지적 교육중재와 개별적 특성을 고려한 구조화되고 체계화된 교육프로그램의 개발 및 적용이 필요하다. The present study investigates the relationships between clinical practice stress, major satisfaction, and nursing professionalism in nursing students, and aims to explore the direction of nursing education for the establishment of exemplary nursing professionalism in nursing college students. This correlational study involved 210 third- and fourth-year nursing students with clinical practice experience. Data were collected from April 1 to May 30, 2014. Data were analyzed using t-tests, correlation analyses, and regression analyses with SPSS Program 20.0. Also, AMOS were used for confirmatory factor analysis. Stress in clinical practice explained 30% of the variance in satisfaction with one's major, and was the strongest predictor of nursing professionalism, explaining 53% of the variance in the same. The results show the need for educational interventions to enhance students' perceived value of and satisfaction with nursing, as well as for structured and systematic educational programs that consider individual characteristics.

매트릭스 분석(Matrix Analysis)을 활용한 최적 공법 선정에 관한 연구

박현정,Park, Hyun-Jung 한국정보통신학회 2014 한국정보통신학회논문지 Vol.18 No.4

본 연구는 지하공사에 적용되는 흙막이 공법 중 4개 공법을 대상으로 영향요인들의 상대적인 가중치를 분석하여 최적의 흙막이 공법을 선정하는 방법에 대한 연구이다. 도심지에 적합한 흙막이 공법 선정을 위한 주요 영향영역과 영향요인들을 설문조사를 통해 분석하여 이를 토대로 매트릭스 분석을 이용하여 흙막이 선정 방법을 제안하였고, 대안별 공법들을 대안 평가기준의 중요도를 통하여 가중치 및 대안 평가기준을 종합 분석함으로써 영향 영역들의 중요도를 평가하여 최적 대안을 분석하였다. 다양한 제한요소를 고려해야 하는 지하 흙막이 공법 선정을 위한 분석 시 IT분야의 정보처리기술과의 융합은 많은 제한조건을 체계적으로 분석하여 최적화하는데 효과적이다. This study regards to a method how to select the optimized earth retaining technology among four target technologies which are applied to underground construction work by analyzing relative weight values of major influence factors. In this study, major affected zone and influence factors are analyzed through questionnaire survey to select a suitable earth retaining technology for downtown area, and an optimized earth retaining technology is proposed by using the matrix analysis based on them. Also, by systematically analyzing the weight values and methods of alternatives selection through consideration the importance of alternatives evaluation criteria, the importance of affected zones is evaluated to determine the optimized alternative. It is concluded that when performing the analysis to select the earth retaining technology which should consider a variety of constraints, the convergence with information processing technology in the field of IT is effective to analyze and optimize many constraints.

역해석 알고리즘을 이용한 변위예측 기법에 관한 연구

박현정,Park, Hyun-Jung 한국정보통신학회 2014 한국정보통신학회논문지 Vol.18 No.4

본 연구에서는 지하굴착공사에서 굴착단계별 변위형상도를 미리 예측하는 기법에 관하여 역해석 알고리즘을 이용하여 현장시공사례에 적용하고 그 타당성을 검증하고자 한다. 이를 위해 IT 분야의 정보 처리 지식이 필요하고 전공융합의 필요성이 대두되어 건설 분야에 알고리즘의 적용을 시도하고자 한다. 본 연구의 기법에서 예측변위형상도는 굴착시공 시 연속벽체에 작용하는 토압과 연관이 있으며 이는 앵커 제거 후 시공하는 연속벽체의 안정성에 영향을 미치기 때문에 굴착단계별 변위형상도를 미리 예측하는 것은 아주 중요한 문제이다. 본 연구에서는 이를 위해 3곳의 지하연속벽을 사용한 현장에 반복적 역해석 알고리즘 기법을 세 단계로 적용하여 최종굴착 시 계측변위와 비교하였다. 그 결과 계측치와의 변위형상도가 잘 일치하고 있어 본 연구의 해석기법에 대한 타당성이 있음을 알 수 있었다. In this study, we applieorithmd the inverse analysis alg to the prediction of displacement shape in the example construction and verified the feasibility of suggested algorithm. For this purpose, as information processing knowledge in the field of IT is required and the need for convergence with the major is emerged, it is intended to try to apply the algorithm to the construction sector. Prediction of displacement shape is very important since it is related to the earth pressure of slurry wall and effecting on the safety of slurry wall after anchor removal. 3 levels of inverse analysis were applied to the slurry walls in 3 sites and compared the measured displacement shape with predicted displacement shape of the last excavation construction. As the predicted displacement shape was matched well with the measured one, the applied analysis algorithm in this study can be applied to the excavation construction.

광학 시뮬레이션을 이용한 Patterned Sapphire Substrate에 따른 Flip Chip LED의 광 추출 효율 변화에 대한 연구

박현정,이동규,곽준섭,Park, Hyun Jung,Lee, Dong Kyu,Kwak, Joon Seop 한국전기전자재료학회 2015 전기전자재료학회논문지 Vol.28 No.10

Recently many studies being carried out to increase the light efficiency of LED. The external quantum efficiency of LED, generally the light efficiency, is determined by the internal quantum efficiency and the light extraction efficiency. The internal quantum efficiency of LED was already reached to more than 90%, but the light extraction efficiency is still insufficient compared with the internal quantum efficiency because the total internal reflection is generated in the interface between the LED chip and air. Thus, we studied about flip chip LED with PSS and performed the optical simulation which find more optimized PSS for flip chip LED to increase the light extraction efficiency. Decreasing of the total internal reflection and effect of diffused reflection according to PSS improved the light extraction efficiency. To get more higher the efficiency, we simulated flip chip with PSS that the parameters are arrangement, edge spacing, radius, height and shape of PSS.

Erratum to : 청색 마이크로 LED의 광 추출 효율에 미치는 칩 크기 의존성 연구

박현정,차유정,곽준섭,Park, Hyun Jung,Cha, Yu-Jung,Kwak, Joon Seop 한국전기전자재료학회 2020 전기전자재료학회논문지 Vol.33 No.2