• Journal of Aerospace System Engineering
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• v.17 no.2
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• pp.16-25
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• 2023

There are various types of foreign object debris (FOD) in the aviation industry. Tools lost by workers can act as a risk factor throughout aircraft operation, manufacturing, and maintenance fields. Accidents caused by tools lost due to workers' carelessness continue to occur throughout the aviation industry. Aviation-related institutions such as FAA and EASA have established tool control regulations and systems to prevent FOD occurrence. However, in Korea, related regulations and procedures are insufficient. A systematic and effective tool control system is required for reliable manufacturing, airworthiness, operation, and maintenance of aircraft. In this paper, tool control regulations and procedures of domestic and foreign air traffic authorities and aviation industry-related organizations were studied. A wireless communication-based tool control system was proposed based on the NAS 412's tool control regulations certified by the National Standards Association.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2012.10a
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• pp.141-142
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• 2012

해양사고를 야기하는 인적오류는 일반적으로 규정위반, 실수, 간과, 무기억 등 네 가지 요소로 구분되어 있다. 그러나 실제 해운회사의 사고기록을 조사해 보면, 이러한 네 가지 요소로 분류 불가능한 경우가 있다. 특히, 불합리한 작업의 양, 위기관리 능력의 부족, 오해, 불확실성의 이해 부족, 인적 오류의 미반영 등은 기존 네 가지 분류에 포함될 수 없는 것으로 조사되었다. 본 연구에서는 해양사고를 야기하는 해기사의 인적오류를 식별하고 분류하며 평가하기 위한 방법을 고찰하고, 새로운 분류 요소를 식별하였다. 실험결과, 새로운 식별 요소의 개발이 필요하고, 개발한 식별 요소가 해기사의 인적오류 평가에 유효함을 알았다.

• Journal of KIISE:Computing Practices and Letters
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• v.7 no.4
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• pp.359-371
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• 2001

Project scheduling under resource constraint conditions have contained to many uncertain factors and it is perfonned by human experts. The expert identifies the activities of the project, decides the precedent relationships between these activities, and then construct the schedule using expected activity's duration. At this time, most of the scheduling methods concentrate on one of scheduling factor between activity duration and cost. And the activity duration, which is the most important factor in scheduling, is decided by heuristic of expert. Therefore it may cause uncertainty of activity duration decision and the use of this activity duration may increase the uncertainty of constructed schedule. This paper proposes Fuzzy-MOEH scheduling algorithm, which is the aggregation of the fuzzy number for deciding activity duration and applies the cost function for solving the problems of previous scheduling methods. This paper also analyze the utility and property of Fuzzy-MEOH algorithm through the comparison between Fuzzy-MEOH algorithm and existing MEOH algorithm.

• Proceedings of KOSOMES biannual meeting
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• 2006.05a
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• pp.177-183
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• 2006

IMO and ITU-R have done an intensive study to develop performance standards and technical standards of maritime digital communication systems, respectively. In particular, each administration strives to develop new agenda items of adopting digital new technologies. IMO COMSAR submitted draft performance standard of LRIT to IMO MSC, so that IMO mandates carriage requirement of LRIT In addition to that, COMSAR is preparing performance standard of AIS-SART, and approved the utilization of mobile phones for SAR activities. On the other hand, a new agenda item concerning E-navigation strategy was submitted to MSC 81th meeting. These challenges toward enhanced maritime radio communication systems would make it change largely the concepts of traditional navigation We suggest future directions of maritime information communication systems, investigating the study results of IMO and ITU-R.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.4
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• pp.520-528
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• 2021

In this study, we attempted to derive major management factors related to the quality control of formwork and identified differences in the perceptions of construction engineers, construction managers, and field workers about the importance and performance of the derived factors. As a result of the study, 18 management factors related to the formwork were derived. Among the derived factors, the field workers placed importance on the factors that influence the detailed process of the formwork, while construction engineers placed importance on the factors related to the judgment of the progress and completion of the construction. The construction managers placed importance on the factors that affect the quality of the building frame. Based on the results of this study, it is expected that a plan to improve the quality of formwork that accepts the various opinions of each participant will be established.

• Journal of Advanced Navigation Technology
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• v.21 no.2
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• pp.155-162
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• 2017

In recent years, aviation-related safety-critical systems have been developed in Korea, but these products have not satisfied the specified requirements and thus have not been commercialized or commercialized. Due to increasing complexity of the modern aviation system, traditional verification and validation techniques are not sufficient to identify and reduce latent risks in the system. To overcome this shortcoming, a new method which is called 'Independent verification and validation (IV&V)' is suggested. However, academic researches on the effectiveness of this independent verification and validation have not been conducted domestically, and it is performed very rarely even overseas. Therefore, in this paper, we investigated the application of independent verification and validation of the safety-critical aviation systems performed by advanced aviation organizations, and analyzed various positive effects on projects. As a result of the analysis, IV&V shows that early error detection rate is increased, potential risk is mitigated early, and the complex reworking probability, which appears later in the development life cycle, is reduced, greatly preventing the development schedule and costs from increasing.

• Journal of Korean Library and Information Science Society
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• v.47 no.4
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• pp.123-147
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• 2016

With the rapid progress toward a new cataloging model, the revision of Korean Cataloging Rules (KCR) are under discussion. The purpose of this study is to make a suggestion on constructing authorized access points for multilingual works, especially focused on the language and script of authorized access points. To the end, this study investigates (1) the extended functions and meanings of access points on the new model, (2) related guidelines and regulations reflected in International Cataloging Principles and typical cataloging rules, and (3) the characteristics of access points in the current Korean cataloging practices. Finally, (4) desirable languages and scripts of authorized access points representing multilingual works are suggested.

• Journal of Digital Contents Society
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• v.16 no.6
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• pp.871-882
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• 2015

AIS-ASM is one of the studies to provide a variety of maritime safety information as well as the information on a ship's position that is their own function, and AIS-ASM has been implemented with adjustment of the relevant regulations since 2004. However, it was reported that the increased use of ASM message on the existing AIS channel affects the part of the existing AIS own function such as the transmission of the ship's position and safe-related information. Also, seamless MSP service is difficult to provide at a low transmission rate of the existing AIS channel. This study aims to reduce the marine officer's workload through automating captain's mandatory reporting items using the one of the next maritime digital communication technology (ASM2.0). For this purpose, we designed and realized the ASM2.0 protocol through analyzing domestic regulations about passenger flight and AIS-ASM message.

• Journal of the Korean Society for Library and Information Science
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• v.46 no.2
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• pp.261-280
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• 2012

This study seeks to replace PaRIS Principles and find directions of revising KCR4 by analyzing the international Cataloging Principles 2009(ICP 2009) established in the environment of Machine Readable Cataloging. ICP 2009 was reflected in cataloging rules such as RDA and ISBD 2010 as the minimal principles for uniformity in establishing each nation's cataloging rules. In contrary, KCR4 needs to be revised because it has never been changed after 2003, and has only description rules without any rules for the choice and forms of access points. Therefore, this study aims to grasp requirements that should be reflected in KCR4 through analyzing ICP 2009. In first step, it is to grasp the features of ICP 2009 by comparing PaRIS Principle and ICP 2009 and to compare KCR4 in aspects of ICP 2009. The detailed elements for comparison between ICP 2009 and KCR4 are scope, general principles, entitles, attributes, and relationships, objectives and functions of the catalogue, bibliographic description, access points, foundations for search capabilities as the contents of ICP 2009. As a result, this study could give some directions of KCR4 in the future. First, ISBD 2010 and conceptual models should be reflected in KCR4 in description. Second, it should regulate the authority access points in KCR4 based on ICP 2009. Third, it will describe essential access points of work and expression attributes in bibliographic records and authority records to find works and expression. This study will contribute to guide the national cataloging rules.

• Journal of the Korean Society for information Management
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• v.22 no.3 s.57
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• pp.351-378
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• 2005

The study intended to develop KORMARC for archives in order to integrate archives with library materials. The results of the study can be summarized as follows; (1) 2 areas for conservation and physical description are added to the existing 7 areas of ISAD(G)2. The study has also proved that the existing 26 elements of ISAD(G)2 are not fully enough to satisfy the information demands' of institutions and its users as well. (2) For the use of domestic archives in particular, the study has added the description elements of archives that appeared in the Government Regulations of Office Management and those forms of documents that are specified by law for the sake of computerization. The study has added the possible release and grade, release dates, release range, conservation periods, conservation periods, conservation value, the status description of archives elements that are specified in Public Record Management Law. (3) The study has developed the following data fields to be added into KORMARC. 512 creation dates note, 555 finding aids note, 583 action note and 584 accumulation note. Also it reorganizes and adds the indicators of the 245 title statement, 300 physical description 306 playing time, 506 restriction on access note, 534 original version note, 535 location of originals/duplicates note, 540 terms governing use and reproduction notes, 541 immediate source of acquisition note, 545 biographical or historical note, 581 publication note, 850 holding institution data fields.