• Journal of Korean Society for Atmospheric Environment
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• v.21 no.3
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• pp.329-341
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• 2005

The purpose of this study is to study the $PM_{2.5}$ source characteristics affecting the Seoul area using a chemical mass balance (CMB) receptor model. This study was also to evaluate the $PM_{2.5}$ source profiles, which were directly measured and developed. Asian Dust Storm usually occurred in the spring, and very high $PM_{2.5}$ concentrations were observed in the fall among the sampling periods. So the ambient data collected in the spring and fall were evaluated. The CMB model results as well as the $PM_{2.5}$ source profiles were validated using the diagnostic categories, such as: source contribution estimate, t-statistic, R-square, Chi-square, and percent of total mass explained. In the spring months, the magnitude of $PM_{2.5}$ mass contributors was in the following order: Chinese aerosol $(31.7\%)>$ secondary aerosols ($22.3\%$: ammonium sulfate $13.4\%$ and ammonium nitrate $8.9\%)>$ vehicles ($16.1\%$: gasoline vehicle $1.4\%$ and diesel vehicles $14.7\%)>$biomass burning $(15.5\%)>$ geological material $(10.5\%)$. In the fall months, the general trend of the $PM_{2.5}$ mass contributors was the following: biomass burning $(31.1\%)>$ vehicles ($26.9\%$: gasoline vehicle $5.1\%$ and diesel vehicles $21.8\%)>$ secondary aerosols ($23.0\%$: ammonium sulfate $9.1\%$ and ammonium nitrate $13.9\%)>$ Chinese aerosol $(10.7\%)$. The results show that the $PM_{2.5}$ mass in the Seoul area was mainly affected by the Chinese area.

• Proceedings of the Korean Geotechical Society Conference
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• 2004.03a
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• pp.289-309
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• 2004

위에서 언급한 바와 같이 계측대상 연약 지반이 대심도, 광역화함에 따라 연약지반 계측의 전반적인 추세는 자동계측 시스템의 사용과 준설ㆍ매립공사 또는 해수면상에서의 공사 특성상 케이블 관리의 어려움을 극복하고자 무선데이터 전송방식의 사용이다. 또한 유지관리의 필요성 증대로 인하여 계측 모니터링, 자동분석 프로그램의 기술도 발전되고 있다. 그러나 아직 국내는 계측에 대한 기술 개발이 미비할 뿐 아니라 계측기술에 대한 인식이 매우 부족하고, 관련법이 정비되지 못하여 계측관련 기술 및 경험이 전무한 영세업체들까지 난립하여 치열한 경쟁을 하는 관계로 기술개발에 대한 투자는 거의 중단된 상태이다. 따라서 정확한 유지관리 계측을 위해서는 대부분 외산기기에 의존할 수밖에 없는 상황이다. 그러나, 현재 국내의 전자통신 기술의 수준을 감안할 때 관련법이 정비되고 체계적인 연구와 투자가 이루어진다면 쉽게 세계적인 수준으로 도약할 수 있으리라 판단된다. 한국지반공학회의 연약지반위원회에서는 2003년 8월 20일 한양대학교 박물관 강당에서 학술세미나를 개최하였다. 본격적인 세미나에 앞서 '연약지반 공학자의 당면문제 및 해결방안'에 관한 주제로 전 연약지반위원회 위원장이셨던 (주)에스코 컨설턴트의 김승렬박사께서 초청강연을 하여 주셨다. 김승렬박사께서는 그 원고의 꼬리말을 다음과 같이 기술하며 마무리하셨다. 국내 연약지반 기술수준의 상황과 우리의 위상을 제고하기 위한 좋은 말씀으로 생각되어 본고에서는 그 부분을 인용하는 것으로 끝을 맺고자 한다. '우리나라의 연약지반 기술수준은 동남아시아 지역의 국가들인 싱가포르, 대만, 태국, 심지어는 베트남에 비해 결코 우월한 위치에 있지 않다. 오히려 많이 낙후되었다고 할 수 있다. 경제규모와 위상과 발전상태에 비추어 보면 실로 부끄러운 일이 아닐 수 없다. 이렇게 된 배경에는 연약지반이 사회의 문제로 대두되는 일이 미미하여 이 분야에 쓸리는 관심이 상대적으로 적은 점이 주원인이라고 볼 수 있다. 연약지반이 기술현장에서 문제로 떠오르기 시작한지도 째 오랜 시간이 경과하였다. 이제 더 이상 우리의 기술수준을 이대로 방치할 수는 없는 시점에 와 있는 것이다. 연약지반에 몸담고 있는 우리 스스로가 위상을 지키려는 노력을 배가하여야 한다. 연약지반 공학자들은 스스로 고급의 데이터를 생산하고 평가하고 예측하는 기법을 활발하게 적용하고 발전시킴으로써 자신들의 위치를 지켜야 할 것이다. Clean-handed-research만을 고집하는 환상에서 깨어나 국외의 변모하는 모습을 빠르게 수용하고 국내의 연약지반 관련 자료를 국외에 널리 알릴 수 있는 위치로 발돋움할 때 연약지반 공학자의 위상도 제고될 것이다.'

• Journal of the Computational Structural Engineering Institute of Korea
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• v.27 no.4
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• pp.321-328
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• 2014

Clear understanding and related information management of geography and city facilities are the fundamental approach to prevent city disaster. In order to accomplish the service to prevent city disaster effectively, there needs to be a consistent framework for data collection, to build models, and to manage information. In this study, the authors proposed standardized city information modeling process and application concept to use information model for service of preventing city disaster in information management standpoint. The study was conducted on the process of classification and necessary attributes to manage city facilities effectively considering disaster related information. Additionally, the study suggested the methods for building an open city information model based on an integrated data schema, CityGML. Finally, through the implementation of sample model, the study confirmed city information modeling methodology and applicability for service of disaster prevention.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.30 no.4
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• pp.65-89
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• 2019

This study explored the fact that libraries can be used as evacuation facilities, suggesting that existing libraries built not only strengthen their role and function as evacuation facilities but also need to be constructed or remodeled to meet the criteria for designation and operation of evacuation facilities. The use of closed schools was proposed to pursue economic efficiency and regional effects in building or remodeling, and the status of the evacuation facilities and closed school in Chungju was evaluated to check the effectiveness of these proposals, and closed school was assessed based on the capacity of the shelter. The three main points of discussion in this paper are as follows: ① Reconfirm what functions and roles the library are performing as an evacuation facility, and explore the advantages of using the library as an evacuation facility is used as an evacuation facility. ② Review and discuss the synergy by the role of the library and the closed schools. ③ Examine and discuss the synergy between these roles of the library and the closed school.

• Resources Recycling
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• v.26 no.5
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• pp.29-38
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• 2017

This study suggests optimal policy options for collection of used diapers through benchmarking of foreign countries and perception surveys. By conducting a survey, this study can identify the actual problems involved in the collection process and enhance the social acceptance toward diaper recycling policies. As a perception survey result, the economic burden of emission bags and sanitary issues were most important for the collection pilot test. Respondents thought that twice-a-week collection frequency was appropriate and that free emission bags might be preferable to participants. Currently municipal wastes are subject to waste management laws, which are applied by local governments. Diaper waste is categorized with municipal waste, so it seems to be treated by municipal waste systems. In terms of connection with government, possible alternatives were suggested to identify the relevant local government. Useful data could be obtained, to determine the economical viability of any future diaper recycling system implementation in the entire Seoul metropolis and adjacent areas of dense population.

• Journal of Industrial Convergence
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• v.18 no.6
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• pp.1-7
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• 2020

In this study, we hypothesized that the needs for start-up support services may vary depending on the founder's psychological characteristics, such as self-efficacy or his attitude toward uncertainty. To verify this, a survey was conducted on the founders of 86 companies located in Business Incubators at Seoul and Daejeon and an empirical analysis was conducted based on the data. According to the analysis, the higher the self-efficacy of the founder, the more active he expressed his willingness to accept the start-up support service, which aims to provide start-up zones to busy areas outside the university. While the founder, who has experienced failure in the past, responded positively to attracting customers located outside the university. The results of this study supported the hypothesis and suggest that differentiated start-up support services should be designed by including not only characteristics at the level of start-up companies, such as industries and growth stages, but also the psychological characteristics of start-ups in important consideration.

• The Journal of the Convergence on Culture Technology
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• v.8 no.6
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• pp.269-274
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• 2022

Today, sports are becoming increasingly important for national development, with all countries raising the strategic goal of becoming a sports powerhouse. Among them, martial arts, which are active in China as the main stage among East Asian martial arts, have a long history and are meaningful, and the promotion of internationalization of martial arts is also important. In this study, major problems faced in the process of promoting martial arts internationalization in East Asia were analyzed in depth. Currently, the theoretical system of martial arts is inconsistent and insufficient, there is a big difference in cultural background from region to region, there is a lack of talent for internationalization, and innovative promotion methods are not yet mature. Based on the major problems encountered in the internationalization of each martial arts, we will analyze the internationalization strategy, establish a martial arts theory system, accept the diversity of martial arts culture, and supplement the internationalization talent supply mechanism to propose a martial arts internationalization promotion method. The future succession and development of Chinese martial arts on the global stage and the promotion of internationalization of the value of Chinese martial arts have important theoretical values and practical significance.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2022.05a
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• pp.322-323
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• 2022

The most necessary thing for the optimal operation of a water purification plant is to accurately predict the pattern and amount of tap water used by consumers. The required amount of tap water should be delivered to the drain using a pump and stored, and the required flow rate should be supplied in a timely manner using the minimum amount of electrical energy. The short-term demand forecasting required from the point of view of energy optimization operation among water purification plant volume predictions has been made in consideration of seasons, major periods, and regional characteristics using time series analysis, regression analysis, and neural network algorithms. In this paper, we analyzed energy management methods through AI-based complex sensor applicability analysis such as LSTM (Long Short-Term Memory) and GRU (Gated Recurrent Units), which are types of cyclic neural networks.

• Journal of the Korean Institute of Rural Architecture
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• v.24 no.4
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• pp.107-115
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• 2022

This study investigated the status of resident participation in the policy of supplying new and renewable energy in rural areas. According to the survey, most of the rural residents were well aware of the new and renewable energy supply project promoted by the government. However, it was found that participation in the project was difficult mainly for economic and social reasons. In order to activate the participation of rural residents who can't participate in the renewable energy power generation project for economic and social reasons, it is necessary to develop and promote business models and support policies for power generation projects in which village communities participate. Changes in residents' acceptability due to resident education and operation for solar power systems were analyzed. As a result of the survey, it was found that the satisfaction of rural residents was high when new and renewable energy power generation projects were introduced in rural areas. Therefore, it is thought that the government's goal of increasing farm household income and expanding the supply of new and renewable energy in rural area can be successfully achieved by the improvement of resident acceptability and the increase of the participation rate. Lastly, this study presented a plan to improve the resident acceptability of the renewable energy system by using the rural solar project and survey results.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.34 no.4
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• pp.55-75
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• 2023

This study proposes the establishment of a joint preservation library in the Chungcheongbuk-do region. It aims to transfer low-utilization materials from various libraries in Chungcheongbuk-do to the joint preservation library, thereby improving the efficiency of existing spaces and actively supporting the educational curriculum of school libraries. To achieve this, the study conducted document analysis, a status survey, and case analysis. The research results indicate that a reasonable standard for the accommodating capacity of the preservation library space is calculated at 280 volumes per square meter. Specifically, an initial transfer of 45,580 volumes for public libraries and 121,894 volumes for school libraries is proposed, totaling 167,474 volumes. Depending on the saturation levels of Chungcheongbuk-do Office of Education-affiliated public libraries and school libraries, the initial volume is determined to be 167,477 volumes, with an annual increase of 10% calculated over 30 to 50 years after the library's opening.