• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.11a
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• pp.55-56
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• 2022

현재 해상교통 분야에서는 국제안전관리규약(ISM Code)과 내항선 안전관리체계 등을 통해 해양사고를 저감을 위한 다양한 정책을 추진하고 있으나, 주기적으로 발생하는 대형사고와 잦은 소형어선 인명사고로 인해 타 운송수단에 비해 위험도 높은 것으로 인식되고 있다. 최근 안전분야의 최대 이슈는 2022년 1월부터 시행 중인 "중대재해기업처벌법"이며, 해운업 분야에서는 선박안전관리사 제도 도입 문제와 안전관리의 디지털화 등이 주요 이슈로 떠오르고 있다. 본 발표에서는 최근 안전관리 현황과 주요 이슈들을 살펴보고, 2000년대 들어와 관심을 받고 있고 타 분야에서는 적용이 활발한 레질리언스 안전(Safety II) 개념을 적용한 시스템적 안전관리를 소개하고자 한다.

• Annual Conference of KIPS
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• 2023.11a
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• pp.1045-1046
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• 2023

본 논문은 디지털 소외계층과 사회적 약자를 고려한 보이스피싱 예방 솔루션을 제안한다. 통화 내용을 AWS Transcribe를 활용한 STT와 NLP 알고리즘을 사용해 실시간으로 보이스피싱 위험도를 파악하고 결과를 사용자에게 전달하도록 한다. NLP 알고리즘은 KoBIGBIRD와 DeBERTa 모델 각각을 커스터마이즈하여 보이스피싱 탐지에 적절하게 파인튜닝 했다. 이후, 성능과 인퍼런스를 비교하여 더 좋은 성능을 보인 KoBIGBIRD 모델로 보이스피싱 탐지를 수행한다.

• Annual Conference of KIPS
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• 2007.11a
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• pp.1242-1245
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• 2007

국가 재난관리 시스템(National Disaster Management System: NDMS)은 개발 및 운용상의 여러 이유로 인해 개인정보의 수집을 필요로 한다. 그러나 이렇게 수집된 개인정보는 수집단계에서부터 소멸단계까지 인가/비인가 관리자에 의한 악용 또는 침해우려가 높다. 본 논문에서는 이러한 개인정보들의 관리 및 보호를 위해 재난관리시스템을 대상으로 보호대상 개인정보를 분석하고, 도출된 개인정보에 대하여 재난관리 업무상의 보호/통제를 평가하며, 개인정보 Life Cycle 별 위협 요소 및 잠재 위험 분석을 통한 영향평가를 수행하여 개인정보보호를 위한 관리적, 기술적, 물리적 대응방안을 제시하고자 한다.

• Journal of the Korean Society of Industry Convergence
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• v.27 no.4_2
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• pp.885-895
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• 2024

As the lack of management for HAZMAT transportation leads to fatal accidents, the interest in the problem is rapidly increasing in the world. Thus UN-RTDG recommends to establish regulations for HAZMAT transportation, and related ministries in Korea make rules and policies according to the regulations. However, there are few researches carried out on railway HAZMAT transportation. In this paper, issues such as present condition of laws and policies related to railway HAZMAT transportation, HAZMAT transportation procedure and regulations, HAZMAT signs of railway etc. are analyzed. Through analyzing these issues the problems and improvements of railway HAZMAT transportation are drawn. These results are respected to help to establish regulations and policies for HAZMAT transportation management. In the future, more detailed plan is needed for putting these improvements to practices.

• Annual Conference of KIPS
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• 2007.05a
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• pp.1527-1530
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• 2007

멀티미디어 디지털 기기의 발전은 Mobile Phone의 사용량 증가로 대두되고 있으며 그에 따른 문제를 해결하는 일도 시급한 상황이다. Mobile Phone 사용 중 작동이 멈춘다거나 하는 문제는 그 사용자수에 비례하여 발생 빈도나 위험성이 높아질 수밖에 없다. 이런 문제가 생기지 않도록 사전에 철저한 테스트를 해보고 시행착오를 겪어봐야 완벽한 제품으로 시중에 내놓을 수 있게 되는 것이다. 기존의 하드웨어와 연결해서 사용 하던 디버거와는 다르게 Remote Debugger는 이러한 문제점을 툴을 통해서 소프트웨어적으로 찾아내어 고치는 역할을 하게 될 것이다. 본 논문에서는 이러한 Remote Debugger를 구현하기 위한 부분 중 call stack watch view 에 대해 논의 하려고 한다.

• The Journal of the Convergence on Culture Technology
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• v.8 no.1
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• pp.361-370
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• 2022

This paper suggested a plan to increase the start-up survival rate by identifying independent variables that significantly affect start-up success through analysis of the founder's internal and external factors. As a result of this study, it was found that internal factors (financial ability, risk sensitivity) and external factors (start-up environment, start-up support policy) had a direct positive (+) effect on start-up success. Meanwhile, self-efficacy for business models partially mediated the relationship between factors(financing ability, risk sensitivity, start-up environment and start-up support policies) and start-up success. Self-efficacy for business models fully mediated the relationship between factors(start-up expertise and challenge spirit) and start-up success. Finally, trust in business models partially mediated the relationship between factors(start-up expertise, risk sensitivity, and start-up support policies) and start-up success. And the trust in business models fully mediated the factors(the spirit of challenge, start-up environment) and start-up success.

• The Journal of the Convergence on Culture Technology
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• v.10 no.5
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• pp.631-643
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• 2024

With the rapid advancement of digital technology, unmanned store services are on the rise, yet studies investigating their impact on customer satisfaction are scarce. This study aims to explore how unmanned store services affect customer satisfaction, focusing on the factors of risk and benefit. The methodology involved an online survey conducted from December 20 to December 30, 2023, targeting 260 customers who had used unmanned store self-service at least once, with 252 responses ultimately analyzed. The results reveal that the risk and benefit factors of unmanned store self-services complexly and diversely influence subjective norms and perceived control. Firstly, personal information breaches positively affected subjective norms, while overload and uncertainty had negative impacts. Secondly, while convenience negatively influenced subjective norms, playfulness and usefulness had positive effects. However, personal breaches and overload did not affect perceived control, whereas uncertainty did negatively. The findings of this study provide significant insights into how successful implementation and management of unmanned store self-services can regulate social expectations and control perception of customers, thereby enhancing customer satisfaction.

• Journal of the Society of Disaster Information
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• v.16 no.4
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• pp.813-823
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• 2020

Purpose: In order to maximize the stability and productivity of the work through simulation prior to high-risk facilities and high-cost work such as dismantling the facilities inside the reactor, we intend to use digital twin technology that can be closely controlled by simulating the specifications of the actual control equipment. Motion control errors, which can be caused by the time gap between precision control equipment and simulation in applying digital twin technology, can cause hazards such as collisions between hazardous facilities and control equipment. In order to eliminate and control these situations, prior research is needed. Method: Unity 3D is currently the most popular engine used to develop simulations. However, there are control errors that can be caused by time correction within Unity 3D engines. The error is expected in many environments and may vary depending on the development environment, such as system specifications. To demonstrate this, we develop crash simulations using Unity 3D engines, which conduct collision experiments under various conditions, organize and analyze the resulting results, and derive tolerances for precision control equipment based on them. Result: In experiments with collision experiment simulation, the time correction in 1/1000 seconds of an engine internal function call results in a unit-hour distance error in the movement control of the collision objects and the distance error is proportional to the velocity of the collision. Conclusion: Remote decomposition simulators using digital twin technology are considered to require limitations of the speed of movement according to the required precision of the precision control devices in the hardware and software environment and manual control. In addition, the size of modeling data such as system development environment, hardware specifications and simulations imitated control equipment and facilities must also be taken into account, available and acceptable errors of operational control equipment and the speed required of work.

• Journal of Digital Convergence
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• v.12 no.9
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• pp.445-454
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• 2014

It has been argued that internet game overflow (IGO) causes negative effects on mental health among adolescents. Especially, suicide has been known as one of the most serious mental health problems in Korea. This study is to examine the effect of IGO on suicidal ideation among adolescents, and to examine the relationship among IGO, depressive mood, and suicidal ideation by analyzing the mediating effect of depressive mood in the relationship between IGO and suicidal ideation. For this purpose, we analyzed the 2012 dataset from the Korea Children and Youth Mental Health Promotion Study (N=8,745) by the National Youth Policy Institute. The results showed that, first, about 5.6% of adolescents were included in the risky group depending on the criteria of the measurement. Second, IGO has a statistically significant effect on suicide ideation when considering the two variables only. Third, however, as depressive mood was found to have a complete mediating effect in the relationship between IGO and suicidal ideation, IGO increases suicidal ideation by increasing depressive mood. As policy and practice implications, the necessity of intervention to reduce IGO and mental health problems among adolescents was discussed.

• Journal of Digital Convergence
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• v.11 no.12
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• pp.245-256
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• 2013

This study illustrates factors that determine consumer types based on ways in which they alternate between online and offline channels for searching and eventually buying their desired products. This study conducted an online survey targeting 1,040 consumers. As per the study, consumer types fall into five groups: 1) on-on type(online search${\rightarrow}$online buying), 2) off-off type(offline search${\rightarrow}$offline buying), 3) on-off type(online search${\rightarrow}$offline buying), 4) off-on type(offline search${\rightarrow}$online buying), and, 5) on-off-on type(online search${\rightarrow}$ offline search${\rightarrow}$nline buying). The primary factors that determine how the different consumer types switch between online and offline channels are price orientation, convenience orientation,, risk-aversion orientation, and channel familiarity. Although they feel cross-channel shopping can be cumbersome, the findings show that cross-channel consumers would gladly switch channels to buy cheaper and proven products. The findings of this study will be useful for businesses that have both online and offline channels and point out the theoretical aspects of the decision-making process as consumers switch between channels.