• The Journal of the Korea institute of electronic communication sciences
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• v.17 no.6
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• pp.1145-1156
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• 2022

In order to effectively secure site suitability for the development of large-scale offshore wind farms, it is essential to minimize the environmental impact of development and analyze the conflicts of benefit between social, ecological, and economic core values. In addition, a preliminary review of site adequacy must be preceded in order not to collide with other used areas in the marine spatial plan. In addition, it is necessary to conduct local meteorological characteristics analysis including wind resources near Jeollanam-do area before project feasibility study. Therefore, wind resource analysis was performed using the observation data of the meteorological mast installed in Wangdeungnyeo near Anmado, Yeonggwang, and the optimal site was selected after excluding geographical constraints related to the location of the offshore wind farm. In addition, the annual energy production was calculated by deriving the optimal wind farm arrangement results suitable for the local wind resources characteristics based on WindSim SW, and it is intended to be used as basic research data for site discovery and selection of suitable sites for future offshore wind farm projects.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.40 no.4
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• pp.343-350
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• 2022

The computerization project for underground facilities in Korea began in earnest after the city gas explosion in Seoul in 1994, and the Daegu subway explosion in 1995. As such a large-scale gas explosion accident caused enormous economic loss including human casualties and potential benefits, the need for computerized for efficient management of underground facilities was greatly emphasized in society. Meantime, computerization of underground facilities has been carried out according to the basic plan for building national geographic information system. In this study, problems were identified based on the current status of construction and management of underground facility information, as well as laws and regulations, and directions for establishing quality standards were presented. In addition, construction work standards such as 「Public Survey Work Regulations」, design standards, standard specifications, and technical specifications, gas technology standards, design standards, and communication works so that underground facility information can be linked and utilized in construction work by examining the linkage of the underground facilities, the targets that can be used for quality level information on underground facilities were derived, and a proposal to revise the construction standards was presented. In the future, if the quality standards are established, it is expected that the accuracy and utilization in the construction field will be increased.

• Proceedings of the Korea Water Resources Association Conference
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• 2023.05a
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• pp.465-465
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• 2023

집중호우시 농경지에서 발생하는 흙탕물은 수질 및 수생태계를 오염시키며, 환경오염에 따른 사회·경제적 문제를 지속적으로 초래하고 있다. 정부와 지자체는 흙탕물 발생이 심각한 지역을 '비점오염원관리지역'으로 지정·고시하여 흙탕물 저감사업을 추진하였으나, 뚜렷한 성과를 나타내지 못하고 있는 실정이다. 최근 정부의 흙탕물 저감사업은 저감시설 설치 등과 같은 구조적 방법에서 발생원관리 중심으로 패러다임이 전환되고 있다. 농경지에서 발생하는 비점오염원의 발생원관리를 위해서는 주민들의 적극적인 참여가 필수적이나, 아직까지 주민들의 비점오염원에 대한 인식이 낮은 수준에 머무르고 있다. 따라서, 본 연구에서는 주민참여 거버넌스를 구축하여 주민들의 인식을 개선하고, 주민들의 참여를 유도하여 농촌지역 실정에 맞는 주민참여형 농업비점오염 관리의 기반을 마련하고자 하였다. 연구대상지는 강원도 비점오염원관리지역인 가아지구 내 강원도 인제군 인제읍 가아2리 마을일원으로, 본 연구의 참여농가는 총 10농가, 참여농지 면적은 21.81 ha이다. 참여농가를 대상으로2022년 10월 9일, 10월 16일, 10월 23일 총 3회에 걸쳐 주민 교육을 실시하였으며, 주기적인 설문조사를 통해 교육 진행에 따른 주민 인식 변화를 측정하였다. 설문조사는 교육참여자를 대상으로 3회 실시하였으며, 농업비점오염 개념, 최적관리기법의 이해, 비점오염저감 활동참여 의지에 관한 내용으로 구성하였다. 설문조사 점수에 대한 기준은 전혀아니다(1점), 그렇지않다(2점), 보통이다(3점), 그렇다(4점), 매우 그렇다(5점)로 선정하였다. 설문조사 결과 농업비점오염원의 대한 이해도는 1차 62점, 2차 66점, 3차 80점, 최적관리기법의 이해도는 1차 59점, 2차 64점, 3차 75점, 비점오염저감 활동참여 의지도는 1차 61점, 2차 73점, 3차 80점으로 나타났다. 1차 설문조사 결과 대비 3차설문조사 결과 농업비점오염의 개념 및 최적관리기법의 이해도는 22.5, 21.3% 증가하는것으로 분석되었으며, 비점오염저감 활동참여 의지도는 23.8% 증가하는 것으로 분석되었다. 조사 결과와 같이 교육을 통해 주민들의 인식이 전환된 것으로 분석되었으며, 비점오염원 저감활동에 대한 의지가 표준 이상으로 나타나 주민 참여 거버넌스 구축 연구를 통해 실질적인 농촌 비점오염 관리가 가능할 것이라 기대된다.

• Proceedings of the Korea Water Resources Association Conference
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• 2021.06a
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• pp.43-43
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• 2021

Sesan강과 Srepok강은 베트남, 캄보디아, 라오스가 공유하는 3S강 유역 (Sesan강, Srepok강, Sekong강)의 일부로 국제 공유하천으로 관리되고 있다. 3S강 유역은 Mekong강의 중요한 지류이며 Mekong강 유역의 상당 부분을 구성한다(Mekong강 유역 면적의 10%, 연간 총 유출량의 20%). 베트남에 속해 있는 Sesan강 유역면적은 11,255km², Srepok강 유역면적은 18,162km²이다. Sesan강과 Srepok강의 상류는 베트남 중부 고원의 긴 산맥에 위치하고 있으며, 하류는 캄보디아에 위치해 있어 상·하류간 긴밀한 협력이 필요하다. Sesan강과 Srepok강 유역은 기후변화에 따른 홍수, 가뭄, 수력발전소 건설로 인한 유출량 변동에 따른 상·하류 분쟁, 사면침식 및 퇴적 등 많은 문제와 도전에 직면할 것으로 예측되고 있다. 본 연구에서는 World Bank의 "Viet Nam Mekong Integrated Water Resources Management (M-IWRM) Project의 일환으로 베트남 정부 차원에서 처음으로 구축한 수자원관리 의사결정지원시스템인 "DSS-2S"를 활용하여, Sesan-Srepok강 유역의 수자원 계획을 수립하였다. DSS-2S는 MIKE Hydro Basin을 기반으로 SWAT모델 등과 연계 하여 구축되었다. DSS-2S는 2S 유역의 모든 주요 하천과 지류를 반영하였으며. 여기에는 17개의 수력발전 댐과 주요 지류에서 용량이 3백만 m³ 이상인 기타 저수지가 포함되었다. 이 보다 작은 용량의 저수지는 대표적인 저수지로 그룹화 되어 반영되었다. 기후변화 및 사회-경제적 발전계획 등을 반영하여, 2030년과 2050년을 목표연도로 생활, 공업, 농업, 관광, 유지용수 등 용수 수요를 추정하였다. 50% 및 85% 빈도의 공급 가능성을 고려하여 물 배분은 물 수요를 충족하고 지하수 개발 최소화를 기준으로 고려되었다. 분석 결과에 의하면 2S강 유역의 총 수자원은 32.2억 m³으로 그중 지표수자원은 29.2억 m³, 안정적으로 이용 가능한 지하수자원은 2.97억 m³으로 분석 되었으며, 지표수와 지하수 연계를 고려하면 전체 2S 강 유역에 물 부족하지는 않으나, 개별 공급 지점을 고려할 때 4월과 5월에 일부 지역에서 물 부족이 나타날 것으로 예측 된다. 장래 물 부족 해결을 위한 대안들을 제시하였으며, 본 성과는 베트남 중앙 정부의 장기수자원 종합계획 수립의 기본 자료로 활용 될 예정이다.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.30 no.4D
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• pp.351-360
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• 2010

In 2010, the number of registered vehicles reached almost at 17.48 millions in Korea. This dramatic increase of vehicles influenced to increase the number of traffic accidents which is one of the serious social problems and also to soar the personal and economic losses in Korea. Through this research, an enhanced intersection hazard prediction model by combining Genetic Algorithm and Artificial Neural Network will be developed in order to obtain the important data for developing the countermeasures of traffic accidents and eventually to reduce the traffic accidents in Korea. Firstly, this research has investigated the influencing factors of road geometric features on the traffic volume of each approaching for the intersections where traffic accidents and congestions frequently take place and, a linear regression model of traffic accidents and traffic conflicts were developed by examining the relationship between traffic accidents and traffic conflicts through the statistical significance tests. Secondly, this research also developed an intersection hazard prediction model by combining Genetic Algorithm and Artificial Neural Network through applying the intersection traffic volume, the road geometric features and the specific variables of traffic conflicts. Lastly, this research found out that the developed model is better than the existed forecasting models in terms of the reliability and accuracy by comparing the actual number of traffic accidents and the predicted number of accidents from the developed model. In conclusion, it is expect that the cost/effectiveness of any traffic safety improvement projects can be maximized if this developed intersection hazard prediction model by combining Genetic Algorithm and Artificial Neural Network use practically at field in the future.

• Journal of the Korea Knowledge Information Technology Society
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• v.13 no.3
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• pp.351-357
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• 2018

This study is on the elderly people's use and experience of a wearable device. By using wearable device, the elderly can monitor their health data at real time. As a result, their motivation for health care, exercise, and so on can improve and enhance. Across the globe, population aging becomes one of the most important problems in each nation. The social and economic burden from aging is one of most serious challenges to sustainability of the world and its economy, including South Korea. Information Communication Technology including wearable device can help the elderly health care improve. In 2016, the number of wearable devices is more than 19 million. Many of them are the devices related to health data monitoring. In the experiment, the authors measure real time health data from the subjects' wearable devices. In the first experiment day, subjects' average waist size was 36.29 inches. In the final experiment day, 31st day later from start of the experiment, the average waist size was 35.51 inches. At the beginning of the experiment, standard deviation was 1.93. At the final day of the experiment, it was 2.24. In regression analysis, when experiment day extends, average waist size seems to decrease. The trend is significant (t=2.719, p<0.05). That result may mean the subjects' motivation for health care improve. Wearable device can increase the elderly people's motivation for health care and exercise. As a result, their health can improve.

• Industry Promotion Research
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• v.9 no.1
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• pp.21-29
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• 2024

In the rapidly advancing information society, electronic devices, including smartphones and tablets, are increasingly digitized and equipped with high-performance features such as flexible displays. This study focused on optimizing the manufacturing process for Transparent Conductive Films (TCF) by using the cost-effective conductive polymer PEDOT and transparent substrate PET as alternatives to expensive materials in flexible display technology. The variables considered are production speed (m/min), coating maximum temperature (℃), and PEDOT supply speed (rpm), with surface resistivity (Ω/□) as the response parameter, using Response Surface Methodology (RSM). Optimization results indicate the ideal conditions for production: a speed of 22.16 m/min, coating temperature of 125.28℃, and PEDOT supply at 522.79 rpm. Statistical analysis validates the reliability of the results (F value: 18.37, P-value: < 0.0001, R²: 0.9430). Under optimal conditions, the predicted surface resistivity is 145.75 Ω/□, closely aligned with the experimental value of 142.97 Ω/□. Applying these findings to mass production processes is expected to enhance production yields and decrease defect rates compared to current practices. This research provides valuable insights for the advancement of flexible display manufacturing.

• Journal of the Institute of Convergence Signal Processing
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• v.24 no.4
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• pp.178-185
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• 2023

Rapid urbanization and advancements in technology have led to a surge in the number of automobiles, resulting in frequent traffic accidents, and consequently, an increase in human casualties and economic losses. Therefore, there is a need for technology that can predict the risk of traffic accidents to prevent them and minimize the damage caused by them. Traffic accidents occur due to various factors including traffic congestion, the traffic environment, and road conditions. These factors give traffic accidents spatiotemporal characteristics. This paper analyzes traffic accident data to understand the main characteristics of traffic accidents and reconstructs the data in a time series format. Additionally, an LSTM-MLP based model that excellently captures spatiotemporal characteristics was developed and utilized for traffic accident prediction. Experiments have proven that the proposed model is more rational and accurate in predicting the risk of traffic accidents compared to existing models. The traffic accident risk prediction model suggested in this paper can be applied to systems capable of real-time monitoring of road conditions and environments, such as navigation systems. It is expected to enhance the safety of road users and minimize the social costs associated with traffic accidents.

• Journal of Korea Port Economic Association
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• v.31 no.1
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• pp.147-169
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• 2015

Our society has been changed so rapidly and we have achieved industrialization and democratization swiftly. On our Economic growth and democratization, it is appraised that Christian Thought and western Capitalism thoughts have been one of the important factors. John Calvin, well known Reformer and thinker of Protestant, as M. Weber assessed, contributed greatly to the progress of Capitalism. He was a Religion Reformer as M. Luther and especially a thinker and man of deed, who affected large areas of human life such as Religion, Economy, Society and Politics. Calvin understood Economy is the main issue of theology and Economic activities can be a position which may restore the correct relationship of God and Man. This Paper aimed to survey, synthesize and systemize the Economy and Management thought of J. Calvin. On these changing current society, it surveyed if His thoughts that has long history, can be applicable or not and Where and How it may. Calvin's Thought not only on his age caused important changes and Reformation but now suggests critical milestones. His Thoughts of Love, Justice, and Fairness based on the Bible have been evaluated as the universal truth and important criteria. Until nowadays his Philosophy has composed critical Principles of decision making rules of Economy and Management and National policies. Especially today, when economy has been more emphasized as a center of our lives, His Thought suggests momentous directions on various Human Life such as Justice and Fairness, deepening of gap between poor and rich, expansion of conflicts among social classes, employment and wages, freedom of markets and its balance, and public good of land use. Reviewing Calvin's Economy and Management thoughts as meaningful basis on the our and world Economy which became worse caused by world monetary crisis and Europe financial crisis that aroused by world Economy globalization and expansion of neo-liberalism, this Paper suggested some future directions. And for the practical sectors, Distribution and Logistics, it proposed some issues and Directions, considering the impacts of His thoughts on the Industries. Nevertheless it can deliver some contributions, as a literature research, it reveals some limitations that it may contain lacking of practical investigations and cases on economy and management fields. In the future, more detailed and deeper research on the practical and situations of economy and management shall be needed.

• Journal of the Korean Society for Library and Information Science
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• v.30 no.1
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• pp.89-123
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• 1996

The world has moved from the Cold War between the east and the west and moved toward the age without idealogy. It places emphasis on economic benefit and welfare of its own nation as its main point With this world trend, in order to sam the competitiveness and the reconciliation of the divided nation the north and the south Korea should be united. Once the north and the south are united, information society will be altered with the huge flow of the civilization. At the same time, the issue of how to operate library policies and system, in which effective acquisition, manipulation, accumulation, and dissemination of information un would be very important. From this point of view, the following conclusions are obtained in this study. Firstly, when building a national library preparing for the national unification. it is essential to introduce 1) the concept of policy and system for information society and 2) that of policy and system which has national-culture as its focus. Secondly, it is essential to prepare the cooperative-structure between libraries prior to the national unification. This kind of cooperation should gradually expand to an extent that allows actual benefits such as building union catalog, inter-library loan system, resource sharing, standardized cataloging rules, and exchange of dissertation... etc. Thirdly, developing the library policies and systems for the national unification must be based on the concept of the mutual cooperation as inter-dependent model rather than on the concept of the incorporation-absorption as a dominant model. The next point the principles of the followings in preparing the library policies should be considered: 1) free-competition, 2) revolution of consciousness through the social education, 3) independence and love for humanity, 4) scientific or reasonable thinking, 5) job responsibility, 6) democratic citizenship, 7) mind far collective life, 8) spirit of public interest 9) globalization In addition, the model of the library systems preparing for thenational unification should include the followings : 1) uniformity of library system and its authority, 2) establishment of research institutes for library policy and system, 3) exchange of library establishment and information resources, 4) building library networks, 5) establishment of education systems for the library and information science and enhancement of its quality, 6) modernizing and developing information technology and its transfer. Finally, the libraries in the north and the south has different concepts, goals, information resources, and the different ways of using them. Considering the practical aspects of the libraries and the reasons for their existence, they must structure the mutual cooperative system so as to minimize the shock when confronting the social changes, so-called the national unification.