• Journal of Food Hygiene and Safety
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• v.39 no.4
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• pp.312-321
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• 2024

Tomato is a widely distributed, cultivated, and commercialized vegetable crop. Recently, an increasing trend has been observed in the consumption of transgenic crops with enhanced functional components. However, consumer concerns regarding genotoxicity have been increasing. This study examined the genotoxicity of transgenic tomato (LTT) using the CRISPR/Cas9 system through a bacterial reverse mutation assay, chromosomal aberration assay, and mammalian micronucleus test. In the bacterial reverse mutation assay, LTT did not induce mutagenicity in Salmonella typhimurium strains TA98, TA100, TA1535, and TA1537, or Escherichia coli WP2uvrA, irrespective of the presence or absence of S9. LTT did not cause clastogenic or aneugenic chromosomal abnormalities during metaphase in CHL cells. Moreover, LTT did not increase the frequency of micronucleated polychromatic erythrocytes in the polychromatic erythrocytes. These findings can be used as a foundation to assess the genotoxicity of transgenic crops using the CRISPR/Cas9 system in the future.

• The Journal of the Korea Contents Association
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• v.9 no.12
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• pp.777-786
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• 2009

In recent, the ships of the Republic of Korea have been suffered from acts of piracy at the seas. With the increase of the threats from the acts of piracy and armed robbery against ships, some of the countries have dispatched their navy warships to the international waters and to carry out military operation against the pirates. However, the total eradication of the piracy has not been achieved due to the lack of international cooperation and the limitation of the international maritime convention itself. In addition, the absence of counter-measures to be taken by the ships itself including the employment of the professional maritime security forces should not be overlooked. In this connection, this paper examined the reality of the piracy together with armed robberies at the seas and the problems in the response were also analyzed. Based on the research, it suggested some possible measures with special reference to the private security. The limitation of this paper is that it only focus on the aspect of the private security. In this paper, the cooperation among the countries according to the maritime convention and internationally accepted norms and practices. To achieve the goals of this paper, through the comparative review of the related literatures, the practical measures applicable to the prevention of the piracy were suggested.

• Journal of Music and Human Behavior
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• v.2 no.1
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• pp.17-33
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• 2005

Music has a vital meaning in peoples' lives, mostly as a communication medium for thoughts and feelings. Because music is nonthreatening and nonjudgmental, its viability works for everyone. The purpose of this research is firstly to compare the effectiveness of existing social rehabilitation program and music integrated social rehabilitation program for people with mental retardation. Secondly, the study purported to find out if the music integrated social rehabilitation program was effective, then how various musical activities can assist communication and expression, and further assist social interactions among the people with mental retardation. The data were collected using Emotions Assessment Tool, Social Skills Assessment, and Skills development in Music were used. Also, verbal contents, voices, gestures, nonverbal expressions were observed and analyzed. As the result, it is shown that the music integrated social rehabilitation program has enhanced communicative and expressive skills of adults with mental retardation, and further improved social interactive skills. This implies that music had positive effects to the mental patients on their social relationship activities, than the program without music integration. The results support previous findings that music can be an effective communicative and expression tool.

• Proceedings of the Korea Water Resources Association Conference
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• 2017.05a
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• pp.486-490
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• 2017

도심지에서의 침수피해는 이상홍수 및 국지성 호우 시 우수관거 시설기준 미달, 펌프장 등 배수시설이 설치되지 않아 하천의 계획홍수위보다 제내지의 지반고가 낮은 저지대 지역에서 많이 발생하고 있다. 특히, 내수침수의 경우는 외수에 따른 범람보다는 국민의 재산과 인명피해에 직접적인 영향을 미치므로 침수피해 위험도가 높은 지역의 주민에게 그 지역의 침수빈도와 범위를 인지시키고 사전대응 능력을 향상시킬 필요가 있다. 따라서 연구의 목적으로 매년 피해가 발생한 이력이 있는 위험지구에 대해 전국단위 시군구별 침수피해 지도를 작성하여 침수심 산정과 피해액 예측할 수 있는 기초자료로 활용하고, 주민들의 신속한 대처를 통해 그들의 생명과 재산을 보호하여 재난 안전 국가 이미지 제고에 기여하고자 한다. 본 연구에서는 도심지 유출모형인 XP-SWMM을 활용하여 내수재해 위험요인에 대한 전국을 해석하는 것에 한계가 있어 풍수해저감종합계획에 수록된 XP-SWMM모의 분석 결과 값을 활용하고자 하였다. 기 수립된 전국 풍수해저감종합계획의 과거 피해 자료를 바탕으로 이상 집중호우나 태풍의 내습 시 풍수해 피해 발생 가능성이 제일 높은 지역을 연구범위 대상지역으로 선정하였다. 그 중 풍수해의 주요 원인으로서 태풍, 집중호우 및 해일로 인한 피해발생 빈도가 높은 지역이면서 하천재해 및 내수침수 피해가 많은 경기도 동두천시를 연구대상 지역으로 선정하였으며, 대상지 유역 현황과 지형정보 및 빈도별 침수심을 조사하였다. 수록된 내용에 따르면 경기도 동두천시는 우수관망의 밀도가 높은 4개 위험지구를 내수재해 발생가능성 지역으로 선정하여 10년, 20년, 30년, 50년, 100년, 200년 6개 빈도에 대해 XP-SWMM 모의를 실시하였다. 이와 같이 수록된 각 빈도에 대한 모의 결과 값을 GIS기술을 이용하여 디지털화 하고 부가적인 분석을 위한 GIS데이터화 하는 내삽법을 선정하여 침수면적 및 침수심을 산출하였다. 그러나 면적비교를 통해 모의 결과 값을 디지털화 하는 과정에서 많은 오차가 발생되는 것을 확인하였고, 이를 보완하기 위해 좌표보정 자동화 프로그램을 개발하여 이러한 문제점을 제거하여 신뢰도를 향상시켰다. 이렇게 계산된 연구 대상지역의 침수심과 침수면적을 활용하여 지도제작 표준 지침서 및 가이드라인을 제시하여 한국형 호우피해 지도제작 기술개발에 기여하고, 비구조적 대책으로서 이상홍수에 대한 위험도를 파악하여 지역별 도심침수 방지를 위한 대비체계를 구축하는 등 위험지역에 대한 사전분석 및 활용에 기초자료로 도움이 되고자 한다.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.39 no.6
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• pp.469-476
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• 2021

The framework plan for the development of an integrated underground space map was established of preventing ground subsidence. The mapping process is expected to be completed to the level of nationwide municipal government standards by end of this year. To facilitate the utilization of the integrated underground space map, paper-based drawings for specialized organizations in underground safety impact assessment have been provided since September 2018, and services for local government officials have been provided in the underground information utilization system since May 2019. However, the map is utilized based on the information at the time of the initial development of the map, without any updates, thereby resulting in a lack of accuracy and latest information. This has led to a decrease in the utilization and reliability of the information. Therefore, in this study, for the underground structures(subway, underground shopping mall, underground passage, underground roadway, underground parking lot, utility tunnel), which are the key components of the integrated underground space map, a standard format for the submission of completed drawings is designed in accordance with Article 42 (2) of the Special Act on Underground Safety Management, which aims at laying the foundation for establishing the updated system of the integrated underground space map. In addition, through the verification of the automatically updated underground structure data based on the standard format, the reliability of the data can be assured. This format is expected to contribute to the improved utilization of the integrated underground space map in the future.

• Journal of the Korean Society of Marine Environment & Safety
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• v.29 no.5
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• pp.456-461
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• 2023

The Korea Maritime Environment Corporation is conducting a comprehensive survey of the national marine ecosystem under the commission of the Ministry of Oceans and Fisheries (MOF) to ensure continuous use of the ocean, preserve and manage the marine ecosystem. The survey has set major peaks to investigate changes in the marine ecosystem around the Korean Peninsula. However as the peak has been set around the coast, it is necessary to expand the scope of investigation to encompass offshore areas. Meanwhile, the Aids to Navigation Division of the MOF supports a comprehensive national marine ecosystem survey providing photographs of fouling organisms during the Aids to Navigation lifting inspection, however, the photographs are provided only in consultation with the Korea Maritime Environment Corporation. Therefore, a study was conducted to generate information on fouling organisms using deep learning-based image processing algorithms by the lifting Aids to Navigation and dorsal buoys so that Aids to Navigation could be used as the major component of a comprehensive national marine ecosystem. If the Aids to Navigation are used as the peak of the survey, they could serve as fundamental data to enhance their own value as well as analyze abnormal marine conditions and ecosystem changes in Korea.

• Journal of the Korean Society of Marine Environment & Safety
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• v.29 no.6
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• pp.598-608
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• 2023

To comprehensively grasp the dynamic changes in the coastal terrain and coastal erosion, it is imperative to incorporate temporal and spatial continuity through frequent and continuous monitoring. Recently, there has been a proliferation of research in coastal monitoring using remote sensing, accompanied by advancements in image monitoring and analysis technologies. Remote sensing, typically involves collection of images from aircraft or satellites from a distance, and offers distinct advantages in swiftly and accurately analyzing coastal terrain changes, leading to an escalating trend in its utilization. Remote satellite image-based coastal line detection involves defining measurable coastal lines from satellite images and extracting coastal lines by applying coastal line detection technology. Drawing from the various data sources surveyed in existing literature, this study has comprehensively analyzed encompassing the definition of coastal lines based on satellite images, current status of remote satellite imagery, existing research trends, and evolving landscape of technology for satellite image-based coastal line detection. Based on the results, research directions, on latest trends, practical techniques for ideal coastal line extraction, and enhanced integration with advanced digital monitoring were proposed. To effectively capture the changing trends and erosion levels across the entire Korean Peninsula in future, it is vital to move beyond localized monitoring and establish an active monitoring framework using digital monitoring, such as broad-scale satellite imagery. In light of these results, it is anticipated that the coastal line detection field will expedite the progression of ongoing research practices and analytical technologies.

• Journal of the Korean Association of Geographic Information Studies
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• v.26 no.4
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• pp.17-26
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• 2023

The integrated underground space map is a three-dimensional map that integrates 16 types, including 7 types of underground facilities, 6 types of underground structures, and 3 types of ground. In order to systematically construct, manage, and utilize the integrated underground space map, it was institutionalized as the "Special Act on Underground Safety Management," and the "Underground Space Integrated Map Production Work Regulations" was prepared as detailed work regulations. However, there is a lack of institutional mechanisms to develop new technologies such as the completed book submission system for submitting change information and automation technology for updating the integrated underground spatial map and to expand the usability of the integrated underground spatial map. Accordingly, this study examined the current status of the integrated underground space map and attempted to suggest a direction for improving the current system through a revision plan and detailed operation management regulations (draft) of the Special Act on Underground Safety Management.

• Journal of Korean Society of Transportation
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• v.34 no.1
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• pp.68-80
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• 2016

Interest in freeway truck traffic has increased largely due to greater safety concerns regarding truck-related crashes. The negative interactions between slow-moving trucks and other vehicles are a primary cause of hazardous conditions, which lead to crashes with larger speed variations. To improve operational efficiency and safety, providing a climbing lane that separates slow-moving trucks from higher performance vehicles is frequently considered when upgrading geometrics. This study developed an operations strategy for freeway climbing lanes based on traffic conditions in real time. To consider traffic safety when designing a dynamic strategy to determine whether a climbing lane is closed or open, various factors, including the level of service (LOS) and the percentage of trucks, are investigated through microscopic simulations. A microscopic traffic simulator, VISSIM, was used to simulate freeway traffic streams and collect vehicle-maneuvering data. Additionally, an external application program interface, VISSIM's COM-interface, was used to implement the proposed climbing lane operations strategies. Surrogate safety measures (SSM), including the frequency of rear-end conflicts and, were used to quantitatively evaluate the traffic safety using an analysis of individual vehicle trajectories obtained from VISSIM simulations with various operations scenarios. It is expected that the proposed algorithm can be the backbone for operating the climbing lane in real time for safer traffic management.

• Journal of the Korea Institute of Building Construction
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• v.20 no.3
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• pp.253-260
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• 2020

With increasing interest in an underground-type ammunition storage facility, several design results have been provided recently. However, since not only experts in the tunnel but also military persons in charge of ammunition have not fully understood the safety distance standard, reliable design results are not being produced. In this study, the effective design method of an underground-type ammunition storage facility was provided by analyzing the current safety distance standard. First, the critical safety distances that dominate the size of construction site for underground-type ammunition storage facilities were evaluated, which are the layout of chambers and the configuration of the entrances. Then, the decreasing effect of inter-chamber distance was studied according to the rock type and the storage density of ammunition. In addition, the method of designing tunnels with parallel lines and two-floors was considered for arranging more chambers while complying with the safety distance standards. In particular, numerical simulations were carried out to determine the satisfaction of the safety distance standards when an underground-type ammunition storage facility is composed of two-floor and the decreasing effect of inter-chamber distance according to the inner explosive pressure reduction. Finally, the method to adjust the size of entrances and the path of pressure were studied for decreasing the safety distance at the entrance.