• 융합보안논문지
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• 제21권2호
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• pp.89-96
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• 2021

최근 미국과 유럽 내에서는 자생테러로 인한 테러 공포가 확산되고 있다. 특히 미국 내에서는 아시안을 겨낭한 '묻지마 테러'가 빈번하게 발생함에 따라 심각한 사회 문제로 대두되고 있다. 이렇게 배후 조직이 없거나 조직화된 형태가 아닌 독자적으로 테러를 감행하는 자생적 테러는 전 세계적으로 사회 안전을 위협하고 있다. 국내에서도 국가정책으로 인한 피해 등으로 인해 국가/사회 불만이 폭증하는 계층, 망상적 정신 질환자 등이 잠재적 자생 테러리스트로 분류할 수 있다. 자생테러는 조직적인 테러와 다르게 테러 징후를 사전에 식별하기 힘들고 테러 도구와 테러 대상을 파악하기 쉽지 않다. 그래서 자생테러에 의한 피해를 최소화하기 위한 독자적인 감시 및 추적 시스템 구축이 필요하다. 본 논문에서는 잠재적 자생테러의 이상 행동 징후를 식별할 수 있는 기관으로부터 정보를 수집하고 이상 행동의 연속성을 감시하며, 이러한 연속적인 행동이 자생테러로 발생할 수 있는 유형을 판단하고 감시 및 추적할 수 있는 시스템을 제안한다.

• 농촌계획
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• 제27권1호
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• pp.9-20
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• 2021

In order to develop practical indicator that can diagnose the regional conditions and characteristics of fishing villages, this study reviewed domestic and foreign researches and selected the diagnostic indicator of fishing villages by spatial unit. The major categories are divided into population and society, economic conditions, and living conditions. The middle categories consists of population, household, industry, tourism, settlement, environment, safety, health and welfare, education, and culture and leisure. The indicator were selected with reference to the existence of statistical data officially provided according to the spatial range(Si/Gun, eup/myeon, village). Based on the selected indicator, the test evaluation was conducted in Jindo-gun, Jeollanam-do by applying data that can be obtained from KOSIS and web GIS. It is judged that the diagnostic indicator developed through this research can be used in various ways from the planning stage to the implementation stage of the regional development project, such as grasping the current conditions, setting improvement targets, promotion and evaluation/monitoring of the project. In addition, it is expected that it will be possible to carry out regional diagnosis for each spatial unit and to plan and implement regional development projects by giving priority to areas where the level of each department is insufficient.

• Journal of Veterinary Science
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• 제21권2호
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• pp.24.1-24.11
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• 2020

The pandemic of avian influenza viruses (AIVs) in Asia has caused enormous economic loss in poultry industry and human health threat, especially clade 2.3.4.4 H5 and H7 subtypes in recent years. The endemic chicken H6 virus in Taiwan has also brought about human and dog infections. Since wild waterfowls is the major AIV reservoir, it is important to monitor the diversified subtypes in wildfowl flocks in early stage to prevent viral reassortment and transmission. To develop a more efficient and sensitive approach is a key issue in epidemic control. In this study, we integrate multiplex reverse transcription recombinase polymerase amplification (RT-RPA) and capillary electrophoresis (CE) for high-throughput detection and differentiation of AIVs in wild waterfowls in Taiwan. Four viral genes were detected simultaneously, including nucleoprotein (NP) gene of all AIVs, hemagglutinin (HA) gene of clade 2.3.4.4 H5, H6 and H7 subtypes. The detection limit of the developed detection system could achieve as low as one copy number for each of the four viral gene targets. Sixty wild waterfowl field samples were tested and all of the four gene signals were unambiguously identified within 6 h, including the initial sample processing and the final CE data analysis. The results indicated that multiplex RT-RPA combined with CE was an excellent alternative for instant simultaneous AIV detection and subtype differentiation. The high efficiency and sensitivity of the proposed method could greatly assist in wild bird monitoring and epidemic control of poultry.

• BMB Reports
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• 제55권6호
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• pp.267-274
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• 2022

Molecular imaging is used to improve the disease diagnosis, prognosis, monitoring of treatment in living subjects. Numerous molecular targets have been developed for various cellular and molecular processes in genetic, metabolic, proteomic, and cellular biologic level. Molecular imaging modalities such as Optical Imaging, Magnetic Resonance Imaging (MRI), Positron Emission Tomography (PET), Single Photon Emission Computed Tomography (SPECT), and Computed Tomography (CT) can be used to visualize anatomic, genetic, biochemical, and physiologic changes in vivo. For in vivo cell imaging, certain cells such as cancer cells, immune cells, stem cells could be labeled by direct and indirect labeling methods to monitor cell migration, cell activity, and cell effects in cell-based therapy. In case of cancer, it could be used to investigate biological processes such as cancer metastasis and to analyze the drug treatment process. In addition, transplanted stem cells and immune cells in cell-based therapy could be visualized and tracked to confirm the fate, activity, and function of cells. In conventional molecular imaging, cells can be monitored in vivo in bulk non-invasively with optical imaging, MRI, PET, and SPECT imaging. However, single cell imaging in vivo has been a great challenge due to an extremely high sensitive detection of single cell. Recently, there has been great attention for in vivo single cell imaging due to the development of single cell study. In vivo single imaging could analyze the survival or death, movement direction, and characteristics of a single cell in live subjects. In this article, we reviewed basic principle of in vivo molecular imaging and introduced recent studies for in vivo single cell imaging based on the concept of in vivo molecular imaging.

• 대한의용생체공학회:의공학회지
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• 제44권5호
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• pp.315-323
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• 2023

The objective of this study is to identify the selective application targets for reporting on details of supply of class 1 and 2 medical devices as part of the improvement of the reports on details of supply of medical device system, and to analyze its effectiveness. Therapeutic materials covered by health insurance and secondhand medical devices were chosen based on the transparency of health insurance coverage and the management of medical device distribution. As a result, approximately 85% of groups can be excluded from the reporting requirements compared to reporting all items under Class 1 and 2 medical devices. This is expected to enhance the efficiency of supply reporting tasks. Additionally, the information on supply details managed by the regulatory authority can be utilized for statistical analysis and periodic monitoring, serving as fundamental data for the development of medical device-related policies and research in the field of medical devices.

• 한국병원경영학회지
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• 제29권1호
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• pp.1-18
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• 2024

Purposes: The Common Data Model(CDM) is very important for multi-institutional research. There are various domestic and international CDM construction cases to actively utilize it. In order to construct a CDM, different terms from each institution must be mapped to standard terms. Therefore, we intend to derive the importance and major issues of terminology mapping and propose a solution in CDM construction. Methodology/Approach: This study conducted terminology mapping between Electronic Health Record(EHR) and MOA CDM for constructing Medical Record Observation & Assessment for Drug Safety(MOA) CDM at Dankook University Hospital in 2022. In the process of terminology mapping, a CDM standard terminology process and method were developed and terminology mapping was performed by applying this. The constructions of CDM mapping terms proceeded in the order of diagnosis, drug, measurement, and treatment_procedure. Findings: We developed mapping guideline for CDM construction and used this for mapping. A total of 670,993 EHR data from Dankook University Hospital(January 1, 2013 to December 31, 2021) were mapped. In the case of diagnosis terminology, 19,413 were completely mapped. Drug terminology mapped 92.1% of 2,795. Measurement terminology mapped 94.5% of 7,254 cases. Treatment and procedure were mapped to 2,181 cases, which are the number of mapping targets. Practical Implications: This study found the importance of constructing MOA CDM for drug side effect monitoring and developed terminology mapping guideline. Our results would be useful for all future researchers who are conducting terminology mapping when constructing CDM.

• 한국항행학회논문지
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• 제22권2호
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• pp.76-83
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• 2018

정부는 2016년 유실어구에 의한 피해를 최소화하기 위해 전자어구실명제 실행계획을 발표하였다. 어구의 과다사용 및 폐어구 저감을 위해 어구의 종류 및 위치, 사용자의 실명을 포함한 정보를 IoT 기반의 통신을 이용하여 어선 및 관제센터에 효율적으로 전송할 수 있는 기술이 필요하다. 이를 위해서는 육상의 기지국에서 식별가능한 다수 부이의 위치정보를 확인할 수 있어야한다. 본 논문에서는 이러한 해상 IoT 통신 시스템을 서비스하기 위해서 육상기지국과 해상에 존재하는 타겟들과의 링크버짓을 계산하여 서비스가 가능한 거리를 산출한다. 어구 모니터링 시스템 구축을 위한 해상 IoT 무선망 설계를 위해 1.8 GHz 주파수 대역을 사용하는 NB-IoT와 900 MHz 주파수 대역을 사용하는 LoRa 서비스에 대해 해상에서의 무선 서비스 최적화를 위한 링크 버짓을 계산한다. 또한, 육상기지국- 부이간 링크버짓과 육상기지국-어선간 링크버짓을 산출하여 그 결과를 분석한다.

• Smart Structures and Systems
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• 제30권5호
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• pp.521-535
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• 2022

Efficient management of deteriorating civil infrastructure is one of the most important research topics in many developed countries. In particular, the remote displacement measurement of bridges using linear variable differential transformers, global positioning systems, laser Doppler vibrometers, and computer vision technologies has been attempted extensively. This paper proposes a remote displacement measurement system using closed-circuit televisions (CCTVs) and a computer-vision-based method for in-situ bridge bearings having relatively large displacement due to temperature change in long term. The hardware of the system is composed of a reference target for displacement measurement, a CCTV to capture target images, a gateway to transmit images via a mobile network, and a central server to store and process transmitted images. The usage of CCTV capable of night vision capture and wireless data communication enable long-term 24-hour monitoring on wide range of bridge area. The computer vision algorithm to estimate displacement from the images involves image preprocessing for enhancing the circular features of the target, circular Hough transformation for detecting circles on the target in the whole field-of-view (FOV), and homography transformation for converting the movement of the target in the images into an actual expansion displacement. The simple target design and robust circle detection algorithm help to measure displacement using target images where the targets are far apart from each other. The proposed system is installed at the Tancheon Overpass located in Seoul, and field experiments are performed to evaluate the accuracy of circle detection and displacement measurements. The circle detection accuracy is evaluated using 28,542 images captured from 71 CCTVs installed at the testbed, and only 48 images (0.168%) fail to detect the circles on the target because of subpar imaging conditions. The accuracy of displacement measurement is evaluated using images captured for 17 days from three CCTVs; the average and root-mean-square errors are 0.10 and 0.131 mm, respectively, compared with a similar displacement measurement. The long-term operation of the system, as evaluated using 8-month data, shows high accuracy and stability of the proposed system.

• 한국환경복원기술학회지
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• 제26권5호
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• pp.1-18
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• 2023

The Ecosystem Conservation Levy (formerly known as the Ecosystem Conservation Cooperation Fund) system has been in place for 20 years, and it can be said that it has now entered the settlement stage. Based on an analysis of publicly available project implementation data from 2014 to 2020, we found that: 1) As the number of return projects increases, the targets of restoration technologies are also strengthening, and it is necessary to frame a series of processes from application, creation, and monitoring for some detailed projects to improve the effectiveness and efficiency of utilizing the levy. 2) Most of the implemented projects are applied as micro-ecosystem creation, but there are many cases where the contents of the project can be seen as other project categories. This shows that the purpose of the return project needs to be approached more clearly and suggests that institutional complementation is needed from the project application stage. 3) The detailed technologies applied tend to be gradually expanding, but most of them are technologies that are not differentiated from general development projects. It is urgent to secure a more technical identity, such as a range and list of utilized technologies suitable for the characteristics and purposes of return projects. 4) It is necessary to establish a relevant evaluation system or framework to utilize the monitoring results of restoration projects. 5) There have been few cases of application of single restoration technologies since the beginning, but the content and scope of the complexity tend to expand in recent years. Even if the objectives are not comprehensive and diverse, it can be seen that many parts of the projects are oriented toward convergence, so it is necessary to conduct separate research on this. 6) As for the direction of improvement of the return project, it is possible to consider expanding the restoration and conservation focus to partially accommodate the complexity of the natural environment and human ecology. It seems that the expansion of restoration technologies that consider the role and function of humans in the natural environment should be explored.

• 한국도로학회논문집
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• 제10권2호
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• pp.159-166
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• 2008

최근 교통감시시스템은 실시간의 영상검지시스템(VIPS)을 가장 선호하고 있으며, 그 수요는 매년 증가하고 있는 추세이다. 일반적으로 영상검지시스템은 공간기반의 검지알고리즘을 사용하고 있으며, 교통량, 속도, 점유율 등의 교통정보를 제공하고 있다. 현재 전 세계적으로 이미 상용화되어 있는 대부분의 영상검지시스템들은 Tripwire기반의 검지영역 내 차량의 존재유무를 판단하여 교통정보를 수집하는 알고리즘으로 구성되어 있으나, 개별차량에 대한 걸지는 불가능한 한계를 갖고 있다. 반면 개벽차량의 추적시스템은 보다 구체적인 공간적 교통정보를 제공할 수 있어 사고검지, 급차선 변경 등 교통정보를 보다 다양화 할 수 있다는 장점이 있으나 추적길이가 불과 100미터이내이면, 그 이상 관측하기 위해서는 운영자가 카메라를 줌인을 하여 영상을 확대하여야 한다. 따라서 본 논문에서는 차량 추적의 효과를 높이기 위해서 기존의 100미터 이내 추적거리를 여러 대의 CCTV시스템을 이용하더라도 200미터이상으로 확대함으로써 사고 또는 비정상적 차량흐름을 검지할 수 있는 알고리즘을 제안한다.