• 한국컴퓨터그래픽스학회논문지
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• 제30권4호
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• pp.31-39
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• 2024

본 연구는 산림치유를 위해 가상현실 시스템을 적용하여 멀미를 줄이고, 몰입감을 높이기 위해 다감각 요소를 사용하였다. 가상현실 시스템을 적용하는 데 있어 멀미를 줄이는 수단으로 다감각적 요소를 사용하면서 더욱 몰입감 있는 경험을 제공하려 한다. 이를 위해 바람과 향기를 이용한 촉각과 후각 장치를 개발하여 사용하였다. Unity3D의 HDRP(High Definition Render Pipeline)을 사용하여 프로그램을 개발했고, HMD(Head Mounted Display)시스템과 non-HMD(non-Head Mounted Display)시스템을 구축하여 시각적 움직임으로 멀미를 유발하는지 확인하였다. 향기를 맡을 수 있게 후각 장치와 바람을 맞는 듯한 촉각을 주기 위해 에어서큘레이터(Air circulator)를 배치하였고 이를 통해 후각과 촉각이 가상현실 산림치유 시스템에 대한 만족도에 영향을 끼치는지 확인하기 위해 실험을 설계하였다. 실험결과 촉각 장치는 멀미를 줄이는 것에 유의미한 결과를 얻었으나, 개발된 후각 장치가 피험자에게 멀미를 줄이는 것에 대한 유의미한 결과를 얻지 못하였다.

• Perspectives in Nursing Science
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• 제11권1호
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• pp.10-17
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• 2014

Purpose: The aim of this study was to analyze health promotion programs utilizing forests by reviewing regional healthcare program plans in Korea. Methods: We analyzed 227 regional healthcare program plans from 2011 to 2014; seven health promotion programs of the 16 major healthcare programs were prescribed by public health law. Results: Our analysis revealed that only 35 health promotion programs from 29 sites were utilizing forests. Furthermore, of 21 known categories of health promotion programs, only nine incorporated the use of forests. Atopy-asthma healthcare programs were the most common forest health promotion programs, which also included specialized disease management programs (e.g., for atopy prevention and healing, patients with metabolic syndrome or cancer) and specialized mental health management programs (e.g., for addiction or dementia prevention). Others included programs on the development of forest roads or industrial development using forest products. Conclusion: Health programs using forests in Korea are still very limited and primarily comprise atopy-asthma prevention/management, health behavioral change, and mental health programs. This study provided useful information for developing health policies and forest health promotion programs further in Korea.

• 한국산림과학회지
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• 제101권4호
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• pp.648-655
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• 2012

본 연구는 치유의 숲의 치유효과 증진을 위해 대중의 시각적 선호도에 기반 한 적정 임목밀도 관리 방향을 제시하는데 그 목적이 있다. 잣나무, 편백, 소나무, 낙엽송의 4개 침엽수종에 대해서 3개 주요 직경급별로 임목밀도 시뮬레이션을 이용하여 시각적 선호도를 조사 분석하였다. 그 결과, 잣나무의 경우, 일반소경재(D<25)는 임목밀도 약 816본/ha, 우량중경재($25{\leq}D$ <40)는 임목밀도 약 400본/ha, 우량대경재($40{\leq}D$)는 임목밀도 약 277본/ha을 가장 높게 선호하였다. 편백의 경우, 일반소경재(D<25)는 임목밀도 약 625본/ha, 우량중경재($25{\leq}D$ <40)는 임목밀도 약 625본/ha, 우량대경재($40{\leq}D$)는 임목밀도 약 400본/ha의 선호도가 가장 높게 나타났다. 소나무의 경우, 일반소경재(D<25)는 임목밀도 약 816본/ha, 우량중경재($25{\leq}D$ <40)는 임목밀도 약 625본/ha, 우량대경재($40{\leq}D$)는 임목밀도 약 400본/ha의 선호도가 가장 높게 나타났다. 낙엽송의 경우, 일반소경재(D<25)는 임목밀도 약 625본/ha, 우량중경재($25{\leq}D$ <40)는 임목밀도 약 625본/ha, 우량대경재($40{\leq}D$)는 임목밀도 약 277본/ha을 가장 선호하는 것으로 나타났다.

• 한국환경생태학회지
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• 제36권5호
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• pp.525-534
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• 2022

본 연구에서는 실제와 가상의 자연 그대로의 숲과 인위적으로 통제가 가능한 VR을 활용한 가상 숲에서의 체험이 성인의 심리적 또는 생리적으로 미치는 효과를 알아보기 위해 수행되었다. 실험은 자연 숲 환경과 외부 빛이 차단된 대학원세미나실에서 진행되었으며, 피험자는 성인 대학생 60명이 참가하였다. 실험은 심리적, 생리적 회복을 통해 자연 숲 환경과 VR 숲 환경에서의 효과를 비교 후 상태를 평가하였다. 심리적 측정 결과 피험자들은 자연 숲 환경과 VR 숲 환경에서 산림 경관을 체험 후에 PANAS를 통한 심리지수에서 긍정적 정서가 증가하고 부정적 정서가 감소되었음을 확인하였고, 타액을 이용한 스트레스 지수인 코티졸을 측정한 결과 두 그룹에서 스트레스 지수가 유의하게 감소되었음을 확인하였다. 거리상 이동의 제약 또는 거동이 불편 등 제약으로 인하여 자연 숲 환경에서 체험을 못하는 사람들에게 VR 숲 환경에서 심리적, 생리적으로 회복 환경을 만들어주는데 사용할 수 있을 것이다. 이러한 연구의 결과가 산림 치유의 시각적 효과에 대한 기반이 되길 기대하고, 산림분야에서 4차 산업의 기술인 VR의 환용이 넓어지는 기반이 되길 기대한다.

• 한국환경과학회지
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• 제22권12호
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• pp.1599-1610
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• 2013

In order to verify the healing effect in the variety of effects according to fountain type, anion which is the representatives factor of healing, as the center of case studies which in Gwanghwamun(Ground fountain), Cheonggyecheon(Waterfall) and Myeongdong(Formative fountain). According to fountain type, the anion distribution as follow, figures typically$ 15,721{\pm}419ea/cm^3$, Formative fountain $40,190{\pm}788ea/cm^3$, Waterfall $4.480{\pm}290ea/cm^3$ and ground fountain $2.492{\pm}180ea/cm^3$. It is usually exceed to the distribution in natural green, which is $1070{\sim}2100ea/cm^3$. The interrelation between air temperature, relative humidity, wind speed and relative humidity, and wind speed is that, the relative humidity is directly proportional to wind speed and inversely proportional to temperature. As the temperature goes up, the distribution of anion goes down. And as the wind speed and relative humidity goes up, the distribution of anion decrease sharply. The result of interrelation between fountain type and the anion distribution is that, the distance of water falling is directly proportional to the anion distribution in the formative fountain and inversely proportional in the ground fountain. And the distribution of anion is largest in formative fountain. The distribution of anion in ground fountain is lower than in formative fountain, but it is far more than in natural greenery. And as the distance from fountain increase, the distribution of anion goes down.

• 한국산림과학회지
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• 제108권3호
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• pp.440-453
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• 2019

본 연구는 평면 숲동영상 및 VR 숲동영상 시청이 성인의 스트레스 감소에 미치는 영향을 밝히기 위해 수행되었다. 실험은 인공기후실에서 진행되었으며, 피험자는 40명이 참가하였다. 피험자의 스트레스를 유발한 후 2D 회색동영상, 2D 숲동영상, VR 숲동영상을 5분 동안 시청하게 하였다. 실험하는 동안 연속적으로 심박변동성을 측정하여 자율신경계 활동을 평가하였으며, 각 실험 후 설문지를 이용하여 심리 상태를 평가하였다. 생리적 측정 결과 2D 숲동영상은 2D 회색동영상보다 스트레스 지수 감소효과가 크고, HF 증가효과가 크며, 심장박동수 감소효과가 크다는 사실을 확인하였다. 또한 VR 숲동영상은 2D 회색동영상 시청보다 스트레스 지수 감소효과가 크고, LF/HF 증가효과가 크며, 심장박동수 감소효과가 크다는 사실을 확인하였다. 심리적 측정 결과 피험자들은 2D 회색동영상보다 2D 숲동영상과 VR 숲동영상을 더 쾌적하고, 자연적이며, 진정된다고 느꼈다는 사실을 확인하였다. 그리고 2D 숲동영상과 VR 숲동영상이 2D 회색동영상보다 긍정적인 정서를 증가시키고 부정적인 정서를 감소시킨다는 사실을 확인하였다. 이상의 결과를 바탕으로 2D 숲동영상과 VR 숲동영상의 시청은 스트레스 상황을 벗어나 2D 회색동영상을 시청하는 것보다 더 스트레스 지수를 감소시키고, 심장박동수를 감소시키는 것으로 판단된다. 또한 2D 숲동영상은 부교감 신경계의 활동을 증가시키고 VR 숲동영상은 교감 신경계의 활동을 증가시키는 차이점이 있는 것으로 판단된다. 마지막으로 VR 숲동영상의 교감 신경계의 활동 증가는 스트레스, 긴장 등의 부정적 교감신경 활성이 아닌 신기함, 호기심 등의 긍정적 교감신경 활성으로 판단된다. 이러한 연구의 결과가 산림치유의 시각적 효과에 대한 기반이 되길 기대하고, 임업분야에서 4차 산업혁명의 기술인 VR의 활용이 넓어지는 기반이 되길 기대한다.

• 펄프종이기술
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• 제43권5호
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• pp.49-54
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• 2011

Curtain coating has been considered as the best coating technology because it is a coating technology that forms contour coating layer with better coverage. To increase the curtain stability surfactants are being used. In this study, the effect of a surfactant on the stability of curtain coating colors was examined by evaluating dynamic surface tension with a bubble surface tensiometer. Di-2-ethylhexyl sodium sulfosuccinate was used as a surfactant since it showed low dynamic surface tension at low surface age. And we evaluated the influence of surfactant on coating color properties including surface tension, viscosity and curtain stability. The surface tension of coating color was decreased when surfactant addition was increased up to 0.5 pph, but it was leveled off at 0.3 pph of surfactant addition. With the increase of surfactant addition rate, viscosity of coating color were increased. Micelles formed by surfactant contributed to the increase of the viscosity. Curtain stability was improved with the addition of surfactant until it reached up to 0.5 pph. Excessive addition of surfactant (> 0.5 pph) didn't improve curtain stability. This was attributed to Marangoni effect(self-healing) and decreasing of curtain thickness.

• Perspectives in Nursing Science
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• 제11권1호
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• pp.30-38
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• 2014

Purpose: In recent years, many attempts have been made to examine the effects of forest therapy on health and to develop related policies. This study aimed to explore the current status of health promotion programs using forests provided by public health centers and to identify program diffusion strategies employed within different communities. Methods: For this descriptive study, we analyzed the 5th regional public health care program plans and explored the perceptions of health care workers attached with the programs using open-ended questionnaires and a focus group interview. Results: This study confirmed the necessity for health promotion programs using forests, as well as administrative and educational demands for such programs. The target population of the programs ranged from individuals with specific diseases to healthy local residents. In addition, the programs covered a wide range of topics, including disease management and health promotion strategies. However, the number of well-structured regional specialized programs remained limited. Collaboration among local governments, schools, and public health centers was found to be ineffective. Conclusion: To further disseminate health promotion programs using forests, the central government will need to develop well-structured programs, provide funding and resources to support local governments, and focus on raising public awareness of the health benefits of forest therapy.

• 한국산림과학회지
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• 제40권1호
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• pp.57-62
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• 1978

This study was carried out to determine the proper transplanting time of Platanus occidentalis L. (plane tree, sycamore) with 5 to 6 cm and 25 to 30 cm in diameter of breast height at the forest nursery of Chonnam National University in 1977. For that purpose, the experiment of the time of transplantation, and the moisture content and soluble sugar were analysed. The results are as follows: 1. Both its rooting and growth were slightly different in the period of January to early April (before bud-break), but remarkably declined after its bud-break (mid-April to May). 2. And also, its moisture content and soluble sugar were slightly different (January to early April), but, on the other hand, considerably increased in the content of moisture and sharply decreased in soluble sugar after bud-break (mid-April to May). 3. In comparision with healthy trees, rooting and growth of trees infected with Cankers were unusually retarded and its moisture content and soluble sugar were much less. 4. The proper time to plant sycamore was recognized to be the period of November to March, since the higher amounts of soluble sugar and the lesser amounts of moisture in that period. 5. The sudden exposure to the sun of the boles of diseased and wounded trees could be in death in case of sun-scald on the side of south-west. 6. Pruning wounds should be treated with an antiseptic, as soon as they are made, to prevent entrance of decay or disease while the wound is healing. 7. The wound and sun-scald can be presented by covering the trunk with straw ropes before transplantations.

• 한국환경복원기술학회지
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• 제12권4호
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• pp.11-22
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• 2009

This was a 2nd-year study aiming at developing the procedure of alternative system that was intended to restore not only biophysically disturbed areas but also psychologically and socially damaged community. It was suggested that this participatory restoration system could be constructed based on integrative categorization processes consisting of damage types and readiness of local residents for participation. Three case study sites-High-One resort, Lafarge-Halla cement, and high-altitude farmland near Gangneung city, were selected to apply the theoretical framework proposed as a result of 1st-year work. In order to develop introductory programs, key concepts such as forest for future, carbon offset forest, and healing forest, have been suggested based on analysis of 6 system components including human resources, communication, legal and institutional support, financial sources, restoration methods, and activity programs for each site. More detailed processes and procedures can be identified, defined, and refined after the end of final, 3rd-stage of the study in April of 2010.