• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.113-118
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• 2001

Bridge Control and Inspection ensures the safety, utility, and durability of Bridge in use. This Paper compares Control-interval of Germany with that of Korea, which was described in the special law recently revised concerning the Safety Checkup of Facilities, and analyzes Period of Damage Discovery that the Damage report of other countries showed. According to a result of the analysis, damage requiring structure repair and reinforcement more frequently been discovered even in less than a decade after the completion of construction. The paper, therefore, suggested the reregulation on the Korean Control Interval on the basis of the result.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.5
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• pp.599-604
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• 2018

For missile systems, sustaining high reliability and ensuring economical maintenance are very important. In the Republic of Korea, for most missiles, periodic inspection is mandatory for missiles in the field. Every fixed number of years, they are returned to the ordnance depot to be tested and repaired if faults are found. Almost all missiles have a built-in test (BIT) capability. With the BIT, faulty missiles can be isolated anytime during operations or storage in the launchers. So the reliability and the maintenance costs of the missiles greatly depend on the length of the inspection cycle and the BIT/inspection quality. In this paper, we suggest a model for predicting the storage reliability of missiles subjected to non-periodic tests and periodic inspections, excluding overlapping failures. Some numerical examples are given. This model will be useful for determining the length of the periodic inspection cycle.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.1
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• pp.90-96
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• 2020

In this era, intelligence is considered a major factor in the defense sector. As a result, securing technology for weapons systems for monitoring and reconnaissance of companies has become inevitable. As a result, UAVs (Unmanned Aerial Vehicles) have been developed and are actively operating around the world if the flight operation of manned aircraft is restricted, such as in environments that are too dangerous, messy or boring for the military to perform directly. The system of unmanned aerial vehicles, which has been researched and developed in Korea, includes Air Vehicle Test Equipment(AVTE). AVTE is equipment that is connected to an UAV to check its status and allows the operator to check its flightability by issuing an operational command to the UAV and verifying that it follows the command values. This study conducts fault finding on the phenomenon where the AVTE has stopped operating due to engine noise during these operations and analyzes the cause in terms of software, hardware and external environment. Present improvement measures according to the cause are analyzed and the results of verifying that the proposed measures can prevent failure are addressed.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.21 no.4
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• pp.145-156
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• 2022

To strengthen the security of autonomous vehicles, this study derived checklists through the analysis of the status of autonomous vehicle security. The analyzed statuses include autonomous vehicle characteristics, security threats, and domestic and foreign security standards. The derived checklists are then applied to the AHP(Analytic Hierarchy Process) model to find their relative importance. Relative importance was ranked as one of cyber security management system establishment and implementation, encryption, risk assessment, etc. The significance of this study is to reduce cyber security incidents that cause human casualties as well improve the level of security management of autonomous vehicles in related companies by deriving the autonomous vehicle security level checklists and demonstrating the model. If the inspection is performed considering the relative importance of the checklists, the security level can be identified early.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.25 no.2
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• pp.320-326
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• 2021

AVTE(Air Vehicle Test Equipment) is an equipment to inspect and check the status of on-board aircraft LRUs(Line Replacement Units) before and after flight for performing successful UAV(Unmanned Aerial Vehicle) missions. This paper suggests utilization of the AVTE as an operation support-equipment by implementing several critical functions for UAV-operation on the AVTE. The AVTE easily sets initialization(default) data and compensates for the installation and position errors of the LRUs which provide critical mission data and situation image with pilots without additional individual operation support-equipment. Major fault list and situation image data could be downloaded after flight using the AVTE in the event of UAV emergency situation or unusual occurrence on duty as well. We anticipate the suggested operational approach of the AVTE could dramatically reduce the cost and man power for design and manufacture of additional operation support equipment and effectively diminish workload of the operator.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.2
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• pp.726-736
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• 2017

This study was conducted to analyze whether environmental information could be used for environmental inspection. In addition, environmental information was collected and then an environmental information system applicable to inspection was (developed) using the on-site inspection of pollutant emission facilities and interviews with inspection experts based on the collected information. Moreover, the availability of the information was evaluated based on the (dual-purpose) environmental information system. The information was accumulated in the environmental information system and controlled according to its purpose. The environmental information needed for inspection was divided into four categories: information on emissions, information on emission companies, information on inspection records, and geographic information. The environmental information for each system was evaluated based on these four categories. For most of the systems, it was not possible to find the necessary inspection records. Based on the results, a method was proposed to connect and integrate the perspective of applied and environmental information from previous environmental information systems.

• Journal of Korean Society of Disaster and Security
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• v.15 no.4
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• pp.21-30
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• 2022

After the collapse of the Seongsu Bridge in 1994, the ｢Special Act on the Safety Control and Maintenance of Establishments｣ was enacted in Korea, and many efforts have been made in the field of safety inspection and maintenance of facilities. Among these facilities, a total of 33,165 bridges, which account for the largest share next to buildings, are currently in use, and 28,150 bridges of type 2 and 3 account for about 85% of the total. However, compared to the relatively more important type 1 bridges, type 2 and 3 bridges, which occupy most of the bridges, have insufficient maintenance status regarding inspection and diagnosis. This reason appears in the subjective judgment and records of the inspection performer when performing inspection and diagnosis of bridges, and in the inspection and diagnosis report form that has not been systematically established. Therefore, in this study, we intend to derive an improvement (draft) of the inspection and diagnosis report that can be systematically and continuously utilized by correcting and supplementing the problems of the existing inspection and diagnosis report.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2020.11a
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• pp.11-14
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• 2020

대한민국 제1위 수출입 관문항인 여수·광양항의 코로나19 대응을 통한 항만기능 유지를 위해 수행중인, 육·해상(승선검역, 항만작업장, 입항선박, 항만초소 등 점검)검역 및 방역체계 사례.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.25 no.4
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• pp.59-78
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• 2014

Since 2010, the itinerant librarian project has aimed to support small libraries and to establish cooperative systems between public libraries and small libraries. However, the project has been criticized for several issues, although there are some positive evaluations. In this context this study aims to analyze various issues of the project and to provide alternative strategies. Based on analyzing previous studies the study discusses the concept and social background of itinerant librarians. Furthermore, it explores the issues of the project, including low awareness and employment instability of itinerant librarians through the interviews with participants of the project. As a result, the study provides six alternative strategies to improve the project.

• The Journal of the Korea Contents Association
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• v.11 no.3
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• pp.108-115
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• 2011

This paper informs the standard guideline of electrical inspection for the University laboratories and R&D institutes. A routine electrical inspection is there to prevent an electric shock and electrical fire accident in the Lab. The main issue of this paper is to check the problem of a routine electrical inspection and this paper provides a detailed guideline of a checklist for the Lab which do not have detailed instruction. It mentions the standard model of an effective routine inspection to upgrade the weak electrical environment in the Lab. One of the main purposes of this paper is to develop a routine checklist to control the electrical environment in the Lab. The evaluation checklist we develop will then be applied to every Lab. Introducing an electrical safety checklist builds a clear standard guideline for a real safety check. This will be used as a regular routine check-up for every Lab. The goal of this paper is to enforce safety from electrical accidents in the lab and it will provide safety guidelines for every Lab.