• 한국생활과학회지
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• 제19권6호
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• pp.1053-1062
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• 2010

To assist the further development of hight-visibility clothing this study compared the visibility and subjective wear sensation of commercial protective vests with retro-reflecting materials or LEDs. Nine subjects compared high-visibility vests to evaluate how easy they were to see when exposed to the headlight of a car at night, and the subjects assessed the wear sensation of the vests also. The intensity and visibility of five different colored LEDs assembled on the five substrates separately were also evaluated to select the suitable LED color for night protective clothing. The intensity of illumination was measured by an illuminometer, and the visibility was evaluated by 11 participants both in a dark room and in front of a car outdoors at night. Results showed, the most effective LEDs were high intensity LEDs which shift blinking red and white were most effective. However, excessively high intensity of illumination could decrease the working efficiency. In subjective wear evaluation, the most favorable vest had a front opening, were adjustable at the sides, and had an electric power switch on the front of the vest.

• 패션비즈니스
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• 제19권5호
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• pp.93-109
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• 2015

By the influence of ageing population, the well-being trend, and the increase of interest in health, people seems to be enjoying sports and outdoor life more. Followed by the change of consumers' life style, the interest in smart clothing grafting scientific technology has increased, and research on this subject is necessary. This study is to develop improved design of band type heating vests by grasping the weak point of currently sold heating vest designed by the manufacturer. Through this process, satisfaction of the consumer and the manufacturer can be increased. The results of this study are as follows: 1) Conducted a demand survey with the manufacturer and wearing evaluation test with the consumer on band type heating vests. 2) Suggested design drafts on band type heating vests for both genders reflecting demand survey results. 3) Conducted consumers' preference survey for design drafts. 4) Made the sample product, and then conducted an evaluation of wearing the actual product. Overall, the wearing test results showed high satisfaction for both genders.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2019년도 학술발표회
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• pp.148-148
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• 2019

The 2006 Millennium Ecosystem Assessment (MA) defines ecosystem services (ES) as "the benefits people obtain from ecosystems". Identifying where ES originates, whom it benefits and how it is changing over a period of time is critical in rapidly developing country like Nepal, where the risk of ES loss is high. In the context of various ecosystem services provided by watershed, this study, particularly deals with water yield, Soil loss and Carbon sequestration computation and evaluation in Bagmati Basin of Nepal. As Bagmati Basin incorporates capital city Kathmandu of nepal, land use change is significant over decades and mapping of ES is crucial for sustainable development of Basin in future. In this regard, the objectives of this study are 1) To compute the total and sub-watershed scale water yield of the basin, 2) Computation of soil loss and sediment retention in the basin, and 3) Computation of carbon sequestration in the basin. Integrated Valuation of Environmental Services and Tradeoffs (InVEST), a popular model for ecosystem service assessment based on Budyko hydrological method is used to compute Ecosystem services. The scenario of ES in two periods of time can be referenced for various approaches of prioritization and incorporation of their value into local and regional decision making for management of basin.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2018년도 학술발표회
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• pp.106-106
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• 2018

Ecosystem service valuation is a crucial step for the sustainable management of watershed. In the context of various ecosystem services provided by watershed, this study, particularly deals with water yield computation in Bagmati Basin of Nepal. The water availability per population in Bagmati Basin is lowest compared to other basins in Nepal. Also, the rate of urbanization is rapidly growing over a decade. In this regard, the objectives of this study are 1) to compute the total water yield of the basin along with computation on a sub-watershed scale, and 2) Study the impacts of land use change on water yield based on CLUE-S model. For the study, Integrated Valuation of Environmental Services and Tradeoffs (InVEST), a popular model for ecosystem service assessment based on Budyko hydrological method is used to compute water yield. As well, CLUE-S model is used to study land use change, which is further related to study variation on water yield. The sub-watershed wise outcome of the study is expected to provide the guidelines for the effective and economic management of a watershed on a regional scale.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.313-316
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• 2015

Construction is one of the most dangerous job sectors, which reports tens of thousands of time-loss injuries and deaths every year. These disasters incur delays and additional costs to the projects. The safety management needs to be on the top primary tasks throughout the construction to avoid fatal accidents and to foster safe working environments. One of the safety regulations that are frequently violated is the wearing of personal protection equipment (PPE). In order to facilitate monitoring of the compliance of the PPE wearing regulations, this paper proposes a vision based method that automatically identifies whether workers wear hard hats and safety vests. The method involves three modules - human body detection, identification of safety vest wearing, and hard hat detection. First, human bodies are detected in the video frames captured by real-time on-site construction cameras. The detected human bodies are classified into with/without wearing safety vests based on the color features of their upper parts. Finally, hard hats are detected on the nearby regions of the detected human bodies and the locations of the detected hard hats and human bodies are correlated to reveal their corresponding matches. In this way, the proposed method provides any appearance of the workers without wearing hard hats or safety vests. The method has been tested on onsite videos and the results signify its potential to facilitate site safety monitoring.

• 한국운동역학회지
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• 제33권4호
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• pp.119-127
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• 2023

Objective: This study aimed to compare the activity of the trunk and leg muscles while performing fente (in fencing) wearing weighted and waterbag vests. Method: The electromyography test was used to measure and analyze the activation of the trunk and leg muscles. Eight active fencers from B University (age: 19.5 ± 0.66 years, height: 179.75 ± 5.93 cm, weight: 72 ± 6.32 kg) were selected for this study. Results: According to the EMG analysis results of the 4 muscles measured in this study, left-right differences were observed for rectus abdominis and external oblique abdominis, but left-right differences between the groups were not significant. The gluteus medius muscle was not significantly different from the adductor muscle, but there were significant differences between the groups. Conclusion: The electromyographic analysis of the four muscles measured in this study revealed no significant difference between the left and right recti abdominis and external obliques depending on the vests. However, significant differences were observed between the left and right gluteus medius and adductor longus. Our results can be interpreted as the effects of the inherent movements involved in the fente. Furthermore, our results indicate that the weight transfer while wearing a waterbag vest, which provides an unstable environment, increased the activity of leg muscles.

• 한국지반환경공학회 논문집
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• 제22권3호
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• pp.37-43
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• 2021

본 연구는 토지피복의 변화에 따른 토양 탄소의 변화량을 산정하고자 하였다. 다양한 토양탄소 모형가운데 InVEST Carbon Storage and Sequestration 모듈을 사용하였다. 토지피복은 토양 탄소에 영향을 주는 대표적인 인자 중 하나이다. 따라서 본 연구에서는 대한민국 전역을 대상으로 2000년과 2010년의 토지피복 변화에 따른 토양 탄소의 총량을 비교하였으며, 각 행정구역별(시도)의 변화량을 산정하였다. 대한민국의 토지피복 변화는 주로 시가 및 건조지역의 증가와 초지의 감소 등으로 나타났으며, 이로 인한 토양 탄소의 변화를 나타냈다. 대한민국의 총 토양 탄소 변화량은 10년 사이 11.48(million t) 감소한 것으로 나타났다. 행정구역별 토양탄소량은 대부분의 시도에서 감소를 나타냈으나, 예외적으로 제주도는 토양탄소량이 증가한 것으로 나타났다. 제주도를 제외한 시도 중 감소량이 제일 적은 시도는 서울로 나타났으며, 감소량은 0.033(million t)으로 나타났다. 반대로 가장 많은 감소량을 보인 시도는 경북으로 총 2.893(million t)이 감소하였다. 제주도는 유일한 총 토양 탄소 증가 지역으로 0.547(million t)이 증가하였으며, 10년 사이 농업지역이 2.1배 증가함을 보였다. 토양탄소의 경우 전국단위의 실측 자료 구축이 부족함을 보이며, 추후 다중 모형을 이용하여 연계분석을 통해 검증을 진행해야 할 것이다.

• 대한토목학회논문집
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• 제42권5호
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• pp.651-658
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• 2022

전 세계적으로 기후변화에 대응하기 위해 탄소중립 달성을 위한 전략 중 하나인 생태계와 생태자원을 활용하여 탄소를 저감하는 자연기반해법 방안에 관한 연구들이 진행되고 있다. 본 연구에서는 생태계서비스 기반의 평가 모델인 InVEST Carbon, Coastal Blue Carbon 모델을 이용하여 부산 연안 육역과 연안 해역을 대상으로 탄소저장량 추정 및 경제적 가치 평가를 진행하였다. 연구 결과 부산 연안 육역은 부산 전체 육역과 비교하여 단위면적당 탄소저장량이 적으며, 현재 추진 중이거나 계획된 개발이 완료되면 탄소저장량은 더 감소할 것으로 나타났다. 연안 해역은 육역과 비교해 탄소저장량이 적은 것으로 나타났지만, 향후 생태자원을 활용하는 자연기반해법의 잠재성은 크다. 하지만 공유수면 매립과 같은 개발 행위로 탄소저장량이 많은 중요 서식지에 영향을 줄 경우, 탄소저장량의 감소를 초래하며 이러한 부정적인 영향이 장기적으로 지속될 수 있는 것으로 나타났다. 따라서 부산 연안역의 지속가능한 관리를 위하여 탄소저장량을 고려한 생태계서비스 기반의 관리 전략이 필요하다.

• 한국환경복원기술학회지
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• 제25권6호
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• pp.51-64
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• 2022

Along with the urbanization, the risk of urban flooding due to climate change is increasing. Flood regulation, one of the ecosystem services, is implemented in the different level of function of flood risk mitigation by the type of ecosystem such as forests, arable land, wetlands etc. Land use changes due to development pressures have become an important factor in increasing the vulnerability by flash flood. This study has conducted evaluating the urban flood regulation service using InVEST UFRM(Urban Flood Risk Model). As a result of the simulation, the potential water retention by ecosystem type in the event of a flash flood according to RCP 4.5(10 year frequency) scenario was 1,569,611 tons in urbanized/dried areas, 907,706 tons in agricultural areas, 1,496,105 tons in forested areas, 831,705 tons in grasslands, 1,021,742 tons in wetlands, and 206,709 tons in bare areas, the water bodies was estimated to be 38,087 tons. In the case of more severe 100-year rainfall, 1,808,376 tons in urbanized/dried areas, 1,172,505 tons in agricultural areas, 2,076,019 tons in forests, 1,021,742 tons in grasslands, 47,603 tons in wetlands, 238,363 tons in bare lands, and 52,985 tons in water bodies. The potential economic damage from flood runoff(100 years frequency) is 122,512,524 thousand won in residential areas, 512,382,410 thousand won in commercial areas, 50,414,646 thousand won in industrial areas, 2,927,508 thousand won in Infrastructure(road), 8,907 thousand won in agriculture, Total of assuming a runoff of 50 mm(100 year frequency) was estimated at 688,245,997 thousand won. In a conclusion. these results provided an overview of ecosystem functions and services in terms of flood control, and indirectly demonstrated the possibility of using the model as a tool for policy decision-making. Nevertheless, in future research, related issues such as application of models according to various spatial scales, verification of difference in result values due to differences in spatial resolution, improvement of CN(Curved Number) suitable for the research site conditions based on actual data, and development of flood damage factors suitable for domestic condition for the calculation of economic loss.

• 지역연구
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• 제39권3호
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• pp.3-12
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• 2023

본 연구에서 다루게 될 도시계획 이슈는 도시화 과정에서 흔히 부정적인 스프롤 현상의 물리적 형태 중 하나로 인식되는 도시 파편화 지역들과 도시 열현상의 관계성으로 설정하였다. 연구목적은 시가화 지역 Entropy와 열 현상과의 관계성을 국내 5개 주요 도시 사례를 통해 살펴보는 것이다. 연구대상지 토지피복자료 촬영시기와 동일한 해인 2018년 7월 여름 기상자료를 바탕으로 InVEST Urban Cooling Model을 이용하였고, MSPA(Morphological Spatial Pattern Analysis) 모형을 이용하여 Entropy를 계산하였다. 주요결과로 첫째, Entropy와 Cooling Capacity Index(CCi) 순위 상관성은 낮은 순위 상관성을 보이고 있다(rho=-0.3). 둘째, Entropy와 Average temperature(℃) 사이에는 매우 높은 수준의 순위 상관성이 관찰된다(rho=0.9). 연구함의는 첫째, 난개발 정도가 큰 도시는 도시 열 현상에 부정적일 수 있다는 점이다. 둘째, 오픈스페이스의 성격을 갖는 비시가화 지역의 분산·집중 등의 토지이용 공간 구성이 도시 열환경에 영향을 미칠 수 있음을 의미한다. 본 연구는 일부 사례지역에 한정되어 진행되었다는 점에서 시가화 지역 Entropy와 열 현상 사이에서 일반화가 아닌 가능성이 관찰되고 있음으로 이해하는 것이 적절하다.