밝기 보존을 위한 동적 영역 분할을 이용한 적응형 명암비 향상기법

朴圭熙(Gyu-Hee Park),曺和鉉(Hwa-Hyun Cho),李承俊(Seung-Jun Lee),尹鍾浩(Jong-Ho Yun),崔明烈(Myung-Ryul Choi) 대한전기학회 2008 전기학회논문지 P Vol.57 No.1

In this paper, we propose an adaptive contrast enhancement method using dynamic range segmentation. Histogram Equalization (HE) method is widely used for contrast enhancement. However, histogram equalization method is not suitable for commercial display because it may cause undesirable artifacts due to the significant change in brightness. The proposed algorithm segments the dynamic range of the histogram and redistributes the pixel intensities by the segment area ratio. The proposed method may cause over compressed effect when intensity distribution of an original image is concentrated in specific narrow region. In order to overcome this problem, we introduce an adaptive scale factor. The experimental results show that the proposed algorithm suppresses the significant change in brightness and provides wide histogram distribution compared with histogram equalization.

동적 영역 분할 히스토그램 평활화를 이용한 적응형 명암비 향상 기법

박규희(Gyu-Hee Park),윤정수(Jung-Su Youn),최명렬(Myoung-Ryul Choi) 대한전자공학회 2010 대한전자공학회 학술대회 Vol.2010 No.11

In this paper, an adaptive contrast enhancement method using dynamic range separate histogram equalization is proposed. Histogram equalization and plateau equalization are widely used for infrared imaging system. However, they often introduce the significant change in luminance which causes luminance saturation and failure in object tracking. Proposed method uses an adaptive histogram redistribution based on histogram partitioning to prevent the side-effect due to the over-enhancement. The experimental results show that proposed method has better performance compared with conventional methods.

동적 영역 분할 히스토그램 평활화를 이용한 적응형 명암비 향상 기법

박규희(Gyu-Hee Park),윤정수(Jung-Su Youn),최명렬(Myoung-Ryul Choi) 대한전자공학회 2010 대한전자공학회 학술대회 Vol.2010 No.6

In this paper, an adaptive contrast enhancement method using dynamic range separate histogram equalization is proposed. Histogram equalization and plateau equalization are widely used for infrared imaging system. However, they often introduce the significant change in luminance which causes luminance saturation and failure in object tracking. Proposed method uses an adaptive histogram redistribution based on histogram partitioning to prevent the side-effect due to the over-enhancement. The experimental results show that proposed method has better performance compared with conventional methods.

알코올사용장애자의 회복에 관한 개념분석: 혼종모형

박규희 ( Gyu-hee Park ),김석선 ( Suk-sun Kim ) 이화간호과학연구소 2019 Health & Nursing Vol.31 No.1

Purpose: This study aimed to define and clarify the concept of alcoholics recovery. Methods: This study employed Hybrid model, which is composed of three phase: theoretical phase, fieldwork phase, and analysis phase. In the fieldwork stage, data were collected from interviews of 13 alcoholics’ recovery experience. Results: Concept of recovery of alcoholics was identified as three dimensions: individual·psycological, social relationl, and spiritual. In the individual·psycological dimension, creation of positive self concept, Have hope and aspiration for his/her life, and be confident. In the Social relationl dimension, accept and understand others and active participation activities, and creating new close relation. In the spiritual dimension, knowing mean and purpose of life, the attributes were rely on Almighty, appreciating one’s life and pursuing the meaning of existence. Conclusion: This concept analysis could be used as preliminary data to meet the nursing needs on the alcoholism intervention.

음주노인의 주관적 건강인식이 우울 변화 궤적에 미치는 영향

박규희(Gyu-Hee Park),허원구(Won Gu Heo) 한국산학기술학회 2016 한국산학기술학회논문지 Vol.17 No.10

본 연구는 음주노인의 종단자료를 사용하여 주관적 건강인식의 변화가 우울 변화 궤적에 미치는 영향을 분석한 서술조사 연구이다. 본 연구는 고령화연구패널조사 1차(2006), 2차(2008), 3차(2010), 4차(2012) 자료를 모두 통합하여 균형패널를 구축하였으며, 최종 분석대상자는 네 시점 모두에서 응답한 음주노인 총 543명의 자료를 분석하였다. 연구방법으로는 기술통계와 변인들 간의 관계성을 검증하기 위하여 잠재성장모형을 이용하였다. 그 결과 첫째, 주관적 건강인식의 초기값이 우울수준 초기값에 미치는 영향이 부적(-)인 관계로 통계적으로 유의미하였다. 둘째, 한 주관적 건강인식 초기값이 우울의 변화율에 미치는 영향은 정적(+)인 관계가 있는 것으로 나타났으며, 초기 주관적 건강인식이 높은 음주노인은 우울 수준 변화율도 높다는 것을 의미하나 통계적으로 유의미하지 않았다. 셋째, 주관적 건강인식 변화율이 우울 변화율에 미치는 영향은 부적(-)인 관계가 있는 것으로 나타나 통계적으로 유미한 결과를 보였다. 즉 주관적 건강인식 변화율이 높을수록 우울의 변화율이 낮은 것으로 나타나, 주관적 건강인식의 증가속도가 빨라지면 음주노인의 우울은 증가속도가 느려진다고 할 수 있다. 이상을 토대로 지역사회에서 노인의 음주예방과 건강을 위한 프로그램을 개발하여 우울증과 자살을 예방하는 실효성 있는 정책과 시행이 요구된다. This study intends to examine how the subjective health perception of drinkers influences the depression trajectory change by using longitudinal data for elderly drinkers. This study has set up a balanced panel by combining the results from 『Aging study panel research』 conducted in the year 2006 (1st), 2008 (2nd), 2010 (3rd), 2012 (4th). A total of 543 elderly drinkers, who have responded to each research have been selected as targets for the final analysis. In the analyses, descriptive statistics and Latent Growth Modeling were conducted to examine the causal relationship between the observed and latent variables. The results are as follows: First, it was found that there was a negative correlation-with statistical significance-between the initial value of subjective health perception and the initial status of depression symptom. Second, there was a positive correlation between the initial value of subjective health perception and the changes of depression symptom. This indicates that elderly drinkers with high health perception usually have high degree of depression change; however, this does not mean it was statistically significant. Third, there was a statistically significant correlation between subjective health perception change and depression symptom change. It was found that the depression change level would be low if the subjective health perception change level was high. Thus, we can assume that the depression symptoms of elderly drinker c would slow down if the subjective health perception level increases.

개방 자율실습이 간호학생의 정맥주입술기에 대한 지식, 자신감, 수행능력 및 실습만족도에 미치는 효과

박규희(Park, Gyu Hee),최순희(Choi, Soon Hee) 한국간호교육학회 2016 한국간호교육학회지 Vol.22 No.1

Purpose: This study was done in order to identify the effectiveness of open laboratory self-directed practice on knowledge, self-confidence, skill competency, and satisfaction of intravenous infusion in nursing students. Methods: This is a quasi-experimental study using a non-equivalent control pre-posttest design. The participants were 32 students comprising an experimental group and 30 students comprising a control group. The experimental group was allowed to perform open laboratory self-directed practice only. Pretest and posttest was performed through questionnaires of knowledge and self-confidence, and competence and satisfaction were assessed using checklists at posttest. Results: The score of Knowledge in the posttest showed no significant difference between both groups (F=1.28, p=.290), and those of self-confidence (F=3.87, p=.014) and competency (F=9.55, p<.001) of the experimental group were significantly higher than those of the control group. Conclusion: Open laboratory self-directed practice was effective in improving nursing students self-confidence and competency of intravenous infusion. Therefore, students should be encouraged to actively participate in open laboratory self-directed practice and the effective strategies should be developed.

채도와 명암비 개선을 통한 화질 향상 기법

박규희(Gyu-Hee Park),정병주(Byoung-Ju Jung),윤종호(Jong-Ho Yun),조화현(Hwa-Hyun Cho),최명렬(Myung-Ryul Choi) 대한전자공학회 2007 대한전자공학회 학술대회 Vol.2007 No.7

In this paper, an image enhancement method by saturation and contrast improvement is proposed. Histogram equalization with color difference makes higher contrast. By generating saturation amplification ratio with color difference, the saturation improves effectively. The experimental results show that the proposed algorithm has higher contrast and more natural - look than the conventional methods.

환청 시뮬레이션 개발과 간호 대학생의 환청 시뮬레이션 교육 경험

박향진(Park Hyang Jin),김석선(Kim Suk Sun),박규희(Park Gyu Hee) 학습자중심교과교육학회 2016 학습자중심교과교육연구 Vol.16 No.12

본 연구는 간호 대학생을 대상으로 환청 시뮬레이션 교육 경험을 통한 학습내용을 파악하기 위해 시행하였다. 연구방법은 환청 시뮬레이션 교육에 참여한 간호 대학생 11명을 대상으로 포커스 그룹 인터뷰를 적용한 질적연구이다. 수집된 자료를 내용 분석방법(content analysis)으로 분석한 결과, 간호 대학생의 환청 시뮬레이션 교육의 학습내용에서 ‘증상 경험하기’, ‘공감하기’, ‘간호 인지하기’ 3개의 주제와 함께 ‘집중력 저하’, ‘불쾌감과 두려움 경험’, ‘환자의 이상행동 이해’, ‘환자의 고통 이해’, ‘안정적 환경제공’, ‘지지적 간호제공’ 6개의 범주가 도출되었다. 간호학생들은 환청시뮬레이션 교육경험을 통해 정신질환자에 대한 증상이해와 공감능력이 증진되고, 정신질환자에게 제공해야 하는 간호활동에 대한 인식이 높아져 간호역량 강화에 도움이 되었다고 보고하였다. 본 연구 결과를 기반으로 다양한 환청 시뮬레이션 사례를 개발하고 적용하여 간호대학생의 간호역량강화 효과에 대한 지속적인 연구가 필요함을 제언한다. Purpose: This qualitative study aims to explore the educational experience of nursing students with the clinical simulation of hallucination. Method: Eleven nursing students participants in focus group interviews regrading their educational experiences with the clinical simulation of hallucination. Their interview data were interpreted by qualitative content analysis. A qualitative-content analysis method was conducted to derive themes from subthemes. Results: Three themes emerged from six subthemes related to students’ educational experiences of the clinical hallucination simulation were Symptoms experience , Improving empathy , and Care awareness . Conclusion: Findings support the value of this simulation as a means to promote nursing student s psychological nursing competency by developing intellectual empathy and therapeutic communication skills, and enhancing therapeutic relationships. This study provides recommendations for nursing educators to develop various simulation scenario in psychiatric-mental health nursing.

모성건강관리프로그램이 임부의 우울, 모성역할자신감, 분만자신감에 미치는 효과

김연실,이윤정,박규희,Kim, Youn Sil,Lee, Yun Jeong,Park, Gyu Hee 경희대학교 동서간호학연구소 2017 동서간호학연구지 Vol.23 No.2

Purpose: The purpose of this study was to investigate the effects of the maternal health care program on pregnant women's depression, maternal role self-confidence and delivery self-efficacy in a public health center. Methods: This study used a non-equivalent control group quasi-experiment design attempted to verify the effectiveness of maternal health care program. In the experimental group (39 participants), maternal health care program was applied for 120 minutes for 8 weeks, and the control group (40 participants) was provided with a booklet for maternal health care. Data collection was conducted from September 20, 2015 to November 30, 2015. Data were analyzed using ${\chi}^2-test$, Fisher's exact test and t-test. Results: The maternal health care program showed a significant effect on maternal role self-confidence and delivery self-efficacy compared to control group. Conclusion: The maternal health care program conducted at the public health center was found to be effective in improving maternal role self-confidence and delivery self-efficacy. Further development of a program to mediate the depression of the expectant mothers is needed.

자기개방성 증진을 위한 3D 상담 플랫폼 제안 - 20대의 심리상담 인식 개선을 중심으로

김새별(Sae-byeol Kim),박규희(Gyu-hee Park),신수영(Su-young Shin),장혜린(Hye-rin Jang),조유정(Yoo-jung Cho),최종인(Jon-in Choi),박수이(Su-E Park) 한국정보통신학회 2022 한국정보통신학회 종합학술대회 논문집 Vol.26 No.1

코로나19 이후 현대인이 겪는 정서적 문제가 높아지는 가운데, 심리상담에 대한 부정적 인식과 물리적 한계로 인한 내담자의 부담은 여전히 높다. 이에 본 연구는 비대면 관계에서 관계에 개방적인 20대의 특성을 이용하여 효과적인 상담을 위한 가상 심리상담 플랫폼을 제안하고자 한다. 이를 위해 20대를 대상으로 설문조사를 실시하고 상담사와의 심층 인터뷰를 진행하였다. 이후 Unity를 통해 3D 가상 상담 환경을 조성하여 PC 기반의 서비스를 구상하였다. 연구 결과, 20대가 상담에서 가장 중요하게 생각하는 요소는 상담사의 성향과 부담감 없는 분위기로 나타났으며 이는 심리 상담에서의 자기개방과 밀접한 관련이 있는 것으로 드러났다. 따라서 편안한 분위기로 조성된 3D 공간에서 상담사 캐릭터를 보며 상담에 참여할 수 있도록 하였고 상담 중 상담사와의 다양한 인터랙션 요소를 제공하였다. 본 연구의 의의는 20대 내담자의 자기개방성을 증진해 내담자의 적극적인 상담 참여를 목표로 한다. 이는 원활한 상담을 통해 심리 문제 개선에 큰 도움을 줄 것으로 보인다. As the emotional problems experienced by modern people after COVID-19 have increased, the burden on clients due to negative perceptions of psychological counseling and physical limitations is still high. Therefore, this study proposes a virtual counseling platform for effective counseling using the characteristics of people in their 20s who are open to relationships in non-face-to-face relationships. To this end, a survey was conducted for those in their 20s and in-depth interviews with counselors were conducted. After that a 3D virtual counseling environment was created through Unity to PC-based service. As a result of the study, it was found that the most important factor in counseling in the 20s was the tendency of counselors and an atmosphere without burden, which was closely related to self-opening in counseling. Therefore, it was possible to participate in counseling while looking at the counselor character in a 3D space created in comfortable atmosphere, and various interaction elements with the counselor were provided during counseling. The significance of this study aims to promote self-openness of clients in their 20s and actively participate in counseling. This is expected to greatly help improve psychological problems through counseling.