• 한국물환경학회지
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• 제26권2호
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• pp.268-278
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• 2010

This study derived the effectiveness analysis results of construction of wastewater treatment plant under climate change scenarios. Canadian Global Coupled Model (CGCM3) was used and A1B and A2 of Special Report on Emission Scenario (SRES) were selected. Regional climate change data for this application were downscaled by using Statistical Downscaling Model (SDSM) and the flow and BOD concentration durations were obtained by using Hydrological Simulation Program - Fortran (HSPF). The criteria for low flow and water quality were chosen as $Q_{99}$, $Q_{95}$, $Q_{90}$ and $C_{30}$, $C_{10}$, $C_1$. The numbers of days to satisfy the instreamflow requirements and target BOD concentration were also added to the criteria for comparison. As a results, small wastewater treatment plant improved the water cycle due to the increase of low flow and the decrease of BOD concentration. But climate change affected the reduction of effectiveness significantly. Especially in case of construction of small waste water treatment plant in the upstream region, it is necessary to take climate change impact into consideration since it is usually related to the low flow and the water quality of the stream.

• Journal of Preventive Medicine and Public Health
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• 제47권1호
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• pp.47-56
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• 2014

Objectives: The purpose of this study was to investigate the current status of and problems with the Safe Community Programs in Gangbuk-gu, one of the 25 districts of the capital city of Korea. Methods: The study subjects were 396 individuals who were involved in Safe Community Programs between 2009 and 2011. We examined the effectiveness and willingness of respondents to participate as a safety leader of the Safe Community Program with a questionnaire. We examined the injury death rates of Gangbuk-gu by using of the death certificate data of Korea's National Statistical Office. Descriptive statistics and chi-squared tests were used. Results: The effectiveness of programs did not differ but active participation differed significantly among subjects (p<0.05). The injury death rate of Gangbuk-gu as a whole increased during the implementation period. However, senior safety, in particular, may be a helpful program for reducing injuries in Gangbuk-gu. Conclusions: This study suggests that the lack of active participation may be a major problem of Safe Community Programs in Gangbuk-gu. Therefore, Safe Community Programs should be expanded to the entire district of Gangbuk-gu and more active participation programs should be developed.

• 한국실내디자인학회논문집
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• 제23권2호
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• pp.62-70
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• 2014

In the knowledge and information society of 21st century, 'Creativity' which is the core of national competitiveness and an important foundation for the development of the country has been emphasized on the importance of it. As a result, the convergence educational programs, as known as STEAM (science, technology, engineering, arts, mathematics) became more and more needed to children for cultivating creativity. As a follow-up study on STEAM program combining robotics and design for children developed by Design Promotion Committee of KIID, this study intends to modify and reanalyze the program and to seize the educational effectiveness of the groups of university students as mentors and children as mentees, The results are as follows; First, although the importance of STEAM education is highlighted, short-term educational programs tend to consist of only the contents of each field: design or science. Second, pre-training and mentoring were helpful to both mentors and children. Third, Children expanded the perception of STEAM concept and increased their interests in career. Mentors recognized the importance and the necessity of STEAM education, and were very satisfied with team activities which gave a new experience of working with other field of people. Therefore, this program provide to children an experience of logical thinking, having interests on uninterested field, and encouraging teamwork. Also, it provides to mentors a chance to develop their potential and experience, and set up a new vision for future.

• 디지털콘텐츠학회 논문지
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• 제19권6호
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• pp.1061-1068
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• 2018

디자인은 이미 우리 삶속에 없어서는 안 될 요소로 많은 영역에 다양한 형태로 존재한다. 다양한 디자인이 생성되면서 디자인의 가치 정립(아이덴티티)의 더욱 중요해졌고, 개발된 디자인을 바르게 사용하고 배포 관리하여 일관성을 유지하는 것도 개발만큼 중요한 일이 되었다. 국가적 차원에서 유치하여 치러진 2018 평창 동계올림픽대회 및 동계패럴림픽대회는 다양한 콘텐츠를 생성하고 운영하여 전 세계에 대한민국을 알리는 중요한 역할을 하였다. 한국적 특성을 잘 반영 할 수 있는 '한글'을 모티브로 개발된 엠블럼과 대회 룩, 대회의 정체성을 잘 드러낸 마스코트 등을 만들었다. 생성된 콘텐츠들은 사용자(후원사, 언론, 유관기관 등)의 편의성을 고려하여 디자인 가이드로 만들어져 디자인 배포 시스템(DDS)을 통하여 관리되었다. 본 연구자는 POCOG의 DDS를 운영하여 얻어진 결과를 토대로 디자인 배포 및 관리 시스템의 효용성과 가치를 판단하고자 한다.

• 한국군사과학기술학회지
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• 제20권5호
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• pp.700-707
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• 2017

Recently, the military need more various education and training because of the increasing necessity of various operation. But the education and training of the military has the various difficulties such as the limitations of time, space and finance etc. In order to overcome the difficulties, the military use Defense Modeling and Simulation(DM&S). Although the participants in training has the empirical knowledge from education and training based on the simulation, the empirical knowledge is not shared because of particular characteristics of military such as security and the change of official. This situation obstructs the improving effectiveness of education and training. The purpose of this research is the systematizing and analysing the empirical knowledge using text mining and network analysis to assist the sharing of empirical knowledge. For analysing texts or documents as the empirical knowledge, we select the text mining and network analysis. We expect our research will improve the effectiveness of education and training based on simulation of DM&S.

• Journal of Mechanical Science and Technology
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• 제20권12호
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• pp.2147-2158
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• 2006

The continuous wavelet transform (CWT) has a frequency-adaptive time-frequency tiling property, which makes it popular for the analysis of dispersive elastic wave signals. However, because the time-frequency tiling of CWT is not signal-dependent, it still has some limitations in the analysis of elastic waves with spectral components that are dispersed rapidly in time. The objective of this paper is to introduce an advanced time-frequency analysis method, called the dispersion-based continuous wavelet transform (D-CWT) whose time-frequency tiling is adaptively varied according to the dispersion relation of the waves to be analyzed. In the D-CWT method, time-frequency tiling can have frequency-adaptive characteristics like CWT and adaptively rotate in the time-frequency plane depending on the local wave dispersion. Therefore, D-CWT provides higher time-frequency localization than the conventional CWT. In this work, D-CWT method is applied to the analysis of dispersive elastic waves measured in waveguide experiments and an efficient procedure to extract information on the dispersion relation hidden in a wave signal is presented. In addition, the ridge property of the present transform is investigated theoretically to show its effectiveness in analyzing highly time-varying signals. Numerical simulations and experimental results are presented to show the effectiveness of the present method.

• 한국ITS학회 논문지
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• 제17권2호
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• pp.1-17
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• 2018

리빙랩이란 사용자가 직접 나서서 문제를 해결해 나가는 사용자 참여형 혁신 공간을 의미하며, 리빙랩 참여자는 기술 구상부터 제품 개발의 모든 과정에 참여할 수 있다는 특징이 있다. 본 연구에서는 보행자의 교통사고를 줄이기 위해 전주시를 대상으로 리빙래 방법을 이용하여 보행자 자동감지 횡단보도 시스템을 개발하였다. 또한 리빙랩 적용에 따른 시스템 효과를 분석하기 위해 보행자 대기시간, 보행자 및 차량 신호위반, 무단횡단 측면의 측정지표를 설정하였으며, 시스템 설치전, 설치후, 리빙랩 적용후의 세가지 단계별로 나누어 분석하였다. 측정지표 분석결과, 리빙랩을 적용한 시스템의 효과가 설치전과 설치후 보다 상대적으로 개선되는 것으로 나타났다. 본 연구는 국내 교통 분야에서 리빙랩이 적용된 첫 사례라는 점에서 의의가 있다.

• KIEAE Journal
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• 제16권5호
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• pp.65-71
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• 2016

Purpose : The solar shading device carries out roles in a reduction of the cooling load and an improvement of the thermal comfort of occupants by adjusting incident solar radiation. In addition, The shading device enhances the visual sensation comfort by controlling the optical properties. In order to improve building performance and comfort of occupancy, interests in application of the shading devices are getting increasing. This study investigated the application and effectiveness of the external shading device design using statistical analysis. The outcome of this paper could be utilized for the realization of status quo and for an estimation of effectiveness of the shading device Method : The period of data gathering was between 2003 and 2014 and total 459 cases of practical building project were investigated. Firstly, this study defined qualification of the shading devices; the shading device should have minimum protruding lengths of 150mm to outside and have the function of shading control. This paper investigated application rate of the shading device in real project, regional rate of application, annual change of application, materials and types. Result : The statistical analysis showed that the application rate of shading devices was 25.7% in total 459 building design projects. The application rate in central and southern region was 25.3% and 27.0% respectively. Meanwhile, Jeju region showed 22.2%, which was the lowest rate although this area needs more shading devices. The application number of the shading device was the smallest in 2007, but the rate gradually increased after that. The applications was the largest in 2014 due to growing interest of the shading devices in the building.

• 한국항공우주학회지
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• 제47권12호
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• pp.881-889
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• 2019

가스터빈 이차 유로의 프리스월 시스템은 터빈의 효율을 높이고 소재의 수명을 연장하기 위해 설치되는 냉각 장치이다. 본 연구에서는 프리스월 시스템의 설계점을 기준으로 가스터빈 외기 온도와 터빈 부하 변화에 따른 탈설계점 분석을 수행하였다. 탈설계점에서 내부 유동의 특성을 분석하기 위하여 유량계수와 단열계수를 비교하였다. 터빈 부하 증가에 따라 시스템 내부 냉각 공기의 체적 유량이 증가하였고, 단열계수 또한 20% 터빈 부하와 비교하여 100% 터빈 부하에서 30.46% 상승하였다. 외기 온도가 증가할수록 질량 유량과 냉각 공기의 밀도는 감소하였지만 체적 유량은 상승하였으며, 결과적으로 프리스월 시스템 내부의 냉각 성능은 향상되었다. 프리스월 시스템 출구에서 -20℃ 외기 온도와 비교하여 55℃ 외기 온도의 단열계수는 14.82% 향상되었다.

• 대한한의학회지
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• 제38권3호
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• pp.143-159
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• 2017

Objectives: The aim of this study was to investigate the current status of and seek for measures to activate Korean medicine in stroke care. Methods: This is an e-mail survey targeting the members of Korean medical doctors registered at the association of Korean medicine. The project team of the society of stroke on Korean medicine for the development of clinical practice guideline for stroke has devised the items for the questionnaire. The survey was conducted for 15 days in November 2016. Results: The percentage of the respondents who have treated patients with stroke for the past month was 11.2% in the acute phase, 20.5% in the convalescent phase, and 32.4% in the chronic phase. Approximately 80% of the respondents answered they had a decrease in the number of patients compared to 10 years ago, regardless of the stroke phase. Most of the respondents were using Western medicine together with traditional Korean medicine for physical examination. Acupuncture and herbal medicine were the main therapeutic interventions. The two measures chosen by the most respondents to activate the Korean medicine usage for stroke care were the expansion of the insurance coverage (34.9%) and the generation of evidence on the effectiveness of traditional Korean medicine (25.1%) Conclusion: It is necessary to actively show the role of the Korean medicine through the establishment of the evidence on the effectiveness of Korean medicine and the promotion based on the evidence. In addition, optimal treatment methods should be derived based on the traditional knowledge and modern scientific research and the methods should be educated to every Korean medical clinics and hospitals so that they can be implemented in clinical practice. At the same time, the government should provide policy support to ensure that the optimal treatment can be timely and appropriately implemented.