• Journal of the military operations research society of Korea
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• v.34 no.2
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• pp.1-26
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• 2008

This study presents a new estimation of optimal amount of B/L for infantry rifles and artillery weapons which are currently using in Korean Army. To do that, we analyzed current concept of B/L and methodologies used to compute B/L before, and re-calculate optimal amount of B/L to solve some problems founded. We also applied ARENA simulation model to propose estimated values of optimal B/L. The proposed optimal B/L will certainly help to improve efficiency for wartime readiness in the future.

• Journal of the military operations research society of Korea
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• v.34 no.2
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• pp.43-61
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• 2008

Performance based logistics(PBL) is recently studied and applied for enhancing the combat readiness and reducing the life-cycle cost for weapon system in the United States. Therefore, in this paper, we review the issues of logistic support and suggest alternatives to effectively manage the logistic support for weapon system by using performance based logistics, especially during operation and support phase of weapon systems.

• Journal of the Korean Society for information Management
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• v.10 no.2
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• pp.69-85
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• 1993

The purpose of this papel 1s to forecast the llbra~y as an ~ntelligent library and the librarian as a knowledgeeng~neer's type librar~an In the coming '"1st century, and then analyze the [ole and function of the library andIlbrarian. In order to make an intelhgent lib~ary and educate a knowledge eng~neer's type librar~an. the paper 1smade a study of the preparation to recelve the role and funct~on of knowledge engineering and knowledge englneerand IS presented plans for accepting it into the l~hralv and ~ntormation science.tion science.

• Journal of the Ergonomics Society of Korea
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• v.1 no.2
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• pp.39-42
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• 1982

과거의 많은 사고를 분석해 보면 정보전달에 어떤 결함이나 불비가 원인이 되어 사고가 발생한 예가 많다. 그 예로서 정비작업이 끝나기도 전에 전원을 넣어서 기계가 작동하여 정비원이 기계에 휘말려 사망했다던가, 공항에서 이륙태세를 취하고 있던 항공기가 소음때문에 관리관의 목 소리를 전부 듣지 못하고 이륙 OK 라고 생각하여 이륙동작을 하다가 다른 항공기와 충돌한 사고 등이 있다. 인적원인으로 되는 사고에서는 system error와 human error로 구분할 수 있다. system error는 인원의 부족, 순서의 불비, 통신의 불비와 같은 system의 구성요소가 적절하지 못하거나 충분하지 못한 때에 발생하는 error이다. 이에 반하여 human error는 system의 순서나 설계에서 미리 정해진 권동에 반대가 되는 인간의 행동 때문에 발생한다. 지금까지 human error에 의한 사고로서 결말을 지웠던 것도 그 원인을 깊이 추구해가면 생각 밖의 system error였던 예가 적지 않다. 그러므로 여기에서는 주로 정보전달과정에서 system의 불비로 인하여 발생하는 error에 대하여 고찰한다.

• Digital Contents
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• no.8 s.135
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• pp.54-59
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• 2004

인터넷 포털 대전쟁이 시작됐다. 한국 통신시장을 사실상 양분하고 있는 KT와 SK텔레콤이 인터넷 포털 사업에 포문을 열고 시장재편을 위한 움직임을 본격화하면서다. KTH의‘파란’이 최근 공식 오픈하면서 포털 시장에 파란을 예고하고 있고, 미니홈피로 돌풍을 일으킨 싸이월드를 합병한 SK커뮤니케이션즈의 네이트닷컴은 업계 선두를 넘보고 있다. 여기에 최근 한발 물러서긴 했으나 영화.음악.게임 콘텐츠에서 막강한 지배력을 갖춘 CJ까지 가세해 벤처 텃밭이었던 포털 시장에 대기업을 등에 업은 공룡 등장을 알렸다. 하지만 터줏대감인 NHN.다음.야후코리아 등 전문 포털업체들도 쉽게 물러서지 않을 태세다. 이들 업체들은 검색, 커뮤니티, 메일 등 다양한 신규 서비스를 경쟁적으로 선보이며 전면전을 준비하고 있다. 이에 따라 하반기 포털 시장은 기존 인터넷 전문 포털들과 시장지배력을 갖춘 대기업 포털간의 피할 수 없는 진검승부가 예고되고 있다. 하반기 혈전이 예고되는 공룡기업과 벤처의 싸움이‘골리앗과 다윗’싸움이 될지,‘ 고래싸움에 새우등 터지는’격이 될지 주목된다.

• Journal of Korean Institute of Industrial Engineers
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• v.22 no.4
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• pp.651-662
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• 1996

This paper concerns with preventive replacement under periodic inspections for an item (system) which is in a state of preparedness. The item is subject to wear. The item fails randomly but the failure rate depends on the accumulated wear. The item is preventively replaced if it survives a certain wear limit at periodic inspections. The foiled item is, however, replaced at periodic inspections. Given the costs for replacements and inspections, and the penalty cost of the time elapsed between failure und its detection, the optimal wear limit according to the long-run expected cost per unit time criterion is derived. It has been proved that the optimal wear limit is unique if an item has increasing weer-dependent failure rate. A numerical example for a stationary gamma wear process with Weibull distributed failure is given to show its applicability.

• Annual Conference of KIPS
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• 2015.10a
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• pp.1393-1395
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• 2015

군에서의 경계근무는 방위 임무에 있어 아무리 강조해도 부족할 정도로 중요한 업무이지만, 인간이라는 한계 때문에 어쩔수 없이 소홀히 되어지는 부분이 있다. 이에 본 논문에서는 뇌파를 사용하여 경계병의 졸음을 검출하는 시스템을 제안하였다. 이 시스템은 IoT를 기반으로 설계되었으며, 주요기능으로는 뇌파 측정 기능, 신원 확인 기능, 졸음 판별 표시 기능, 실시간 뇌파 전송 기능 등이 있다. 현재 각 기능에 대한 구체적인 방법들을 구현하여 성능 분석중에 있으며 향후 이 시스템이 완전히 개발 된다면 국방 경계태세 강화 등 다른 여러 분야에서 유용하게 쓰일 것으로 기대된다.

• (The)Study of the Eastern Classic
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• no.72
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• pp.365-400
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• 2018

The signs of $G{\bar{a}}nzh{\bar{i}}$(干支: the sexagesimal calendar system) almanac, which marked each year, month, day and time with 60 ordinal number marks made by combining 10 $Ti{\bar{a}}ng{\bar{a}}ns$(天干: the decimal notation to mark date) and 12 $D{\grave{i}}zh{\bar{i}}s$(地支 : the duodecimal notation to mark date), were used not only as the sign of the factors affecting the occurrence of a disease and treatment in the area of traditional oriental medicine, but also as the indicator of prejudging fortunes in different areas of future prediction techniques.(for instance, astrology, the theory of divination based on topography, four pillars of destiny and etc.) While theories of many future predictive technologies with this $G{\bar{a}}nzh{\bar{i}}$(干支) almanac signs as the standard had been established in many ways by Han dynasty, it is difficult to find almanac discussion later on the fundamental theory of 'how it works like that'. As for the method to mark the era of $Ti{\bar{a}}nt{\check{i}}l{\grave{i}}$(天體曆: a calendar made with the sidereal period of Jupiter and the Sun), which determines the name of a year depending on where $Su{\grave{i}}x{\bar{i}}ng$(歲星: Jupiter) is among the '12 positions of zodiac', there are three main ways of $$Su{\grave{i}}x{\bar{i}}ng-J{\grave{i}}ni{\acute{a}}nf{\check{a}}$$(歲星紀年法: the way to mark an era by the location of Jupiter on the celestial sphere), $$T{\grave{a}}isu{\grave{i}}-J{\grave{i}}ni{\acute{a}}nf{\check{a}}$$ (太歲紀年法: the way to mark an era by the location facing the location of Jupiter on the celestial sphere) and $$G{\bar{a}}nzh{\bar{i}}-J{\grave{i}}ni{\acute{a}}nf{\check{a}}$$(干支紀年法: the way to mark an era with Ganzhi marks). Regarding $$G{\bar{a}}nzh{\bar{i}}-J{\grave{i}}ni{\acute{a}}nf{\check{a}}$$(干支紀年法), which is actually the same way to mark an era as $$T{\grave{a}}isu{\grave{i}}-J{\grave{i}}ni{\acute{a}}nf{\check{a}}$$(太歲紀年法) with the only difference in the name, there are more than three ways, and one of them has continued to be used in China, Korea and so on since Han dynasty. The name of year of $G{\bar{a}}nzh{\bar{i}}$(干支) this year, 2018, has become $W{\grave{u}}-X{\bar{u}}$(戊戌) just by 'accident'. Therefore, in this discussion, the need to realize this situation was emphasized in different areas of traditional techniques of future prediction in which distinct theories have been established with the $G{\bar{a}}nzh{\bar{i}}$(干支) mark of year, month, day and time. Because of the 1 sidereal period of Jupiter, which is a little bit shorter than 12 years, once about one thousand years, 'the location of Jupiter on the zodiac' and 'the name of a year of 12 $D{\grave{i}}zh{\bar{i}}s$(地支) marks' accord with each other just for about 85 years, and it has been verified that recent dozens of years are the very period. In addition, appropriate methods of observing the the twenty-eight lunar mansions were elucidated. As $G{\bar{a}}nzh{\bar{i}}$(干支) almanac is related to the theoretical foundation of traditional medical practice as well as various techniques of future prediction, in-depth study on the fundamental theory of ancient $Ti{\bar{a}}nt{\check{i}}l{\grave{i}}$(天體曆) cannot be neglected for the succession and development of traditional oriental study and culture, too.

• The Korean Journal of Air & Space Law and Policy
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• v.32 no.2
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• pp.155-188
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• 2017

On the one hand, the 4th Industrial Revolution provides a positive opportunity to build a new civilization paradigm for mankind. However, on the other hand, due to the 4th Industrial Revolution, artificial intelligence such as 'Goggle Alpha Go' revolutionized and even the human ability was replaced with a 'Silicon Chip' as the opportunity to communicate decreases, the existence of human beings is weakened. And there is a growing concern that the number of violent crimes, such as psychopath, which hunts humans as games, will increase. Moreover, recent international terrorism is being developed in a form similar to 'Psychopathic Violent-Crime' that indiscriminately attacks innocent people. So, the probability that terrorist organizations abuse the positive effects provided by the Fourth Industrial Revolution as means of terrorism is increasing. Therefore, the paradigm of aviation terrorism is expected to change in a way that attacks airport facilities and users rather than aircraft. Because airport facilities are crowded, and psychopathic terrorists are easily accessible. From this point of view, our counter terrorism system of aviation has many weak points in various aspects such as: (1) limitations of counter-terrorism center (2) inefficient on-site command and control system (3) separated organization for aviation security consultation (4) dispersed information collection function in government (5) vulnerable to cyber attack (6) lack of international cooperation network for aviation terrorism. Consequently, it is necessary to improve the domestic counter terrorism system of aviation so as to preemptively respond to the international terrorism. This study propose the following measures to improve the aviation security system by (1) create 'Aviation Special Judicial Police' (2) revise the anti-terrorism law and aviation security law (3) Strengthening the ability respond to terrorism in cyberspace (4) building an international cooperation network for aviation terrorism.

• Strategy21
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• s.34
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• pp.236-261
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• 2014

The future role of nuclear extended deterrence in the security alliance between the United States and the Republic of Korea is currently a central concern. The gradually lessening role of reliance on nuclear weapons in US security policies broadly, combined with increasing North Korean nuclear capabilities and belligerence, raise fresh questions about the sufficiency of the "nuclear umbrella" as a pillar of the US-ROK defense posture. This article addresses the current and future role of nuclear extended deterrence in Korea in this dynamic context. The article reviews the longstanding trend toward reducing the overall size of the US nuclear arsenal, and assesses developments in US-ROK outlooks toward extended deterrence in response to the Obama administration's nuclear policies and North Korea's recent smaller-scale aggressions. The analysis finds that the challenges of deterrence credibility and allied reassurance are difficult and long-term. The analysis explains how these challenges emerge less from a shrinking US numerical arsenal size than from the sufficiency of specific nuclear and non-nuclear capabilities to meet emerging smaller-scale threats. The analysis also highlights the importance of broader strategic and political interaction in sustaining allied confidence in any joint security posture. The evaluation concludes that a strong US-ROK alliance relationship can be maintained while the size of the US nuclear arsenal continues to decline, in part because nuclear weapons in any deployment configuration are relatively ineffective means for deterring smaller-scale aggression. Nevertheless, continuing adjustment of the US-ROK extended deterrence posture to the evolving, complex and uncertain Korean peninsula security environment will remain an ongoing challenge. Finally, the article encourages further examination of the potential specific role ROK maritime forces might serve in enhancing deterrence of smaller-scale threats while minimizing risks of conflict escalation.