• Journal of Advanced Marine Engineering and Technology
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• v.35 no.1
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• pp.118-125
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• 2011

Currently, in Korea the scientific diving activity is being conducted without any legal basis, thus confusions arise in work coverage, equipment usage, and wage calculation etc. In this paper, introduction of scientific diver certification system is suggested to clear such confusions and to enhance the safety of scientific divers. Also the codes and regulations of foreign countries were introduced, and from the analysis of scientific diving tasks and applying skills, the hostility of the scientific diver's working environment as well as requirement of high level diving skills are explained. Finally the necessity of establishment of scientific diving regulation and introduction of diver certification system were emphasized and the promotion plan was discussed.

• Journal of Advanced Marine Engineering and Technology
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• v.35 no.6
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• pp.856-860
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• 2011

The standard and code of safety for diving systems include requirements in the area of diving plant, personnel qualification, diving medicine and operation. In this study the necessity of Korean standard and code of safety for diving system is suggested through the review and comparison of the diving system regulations of domestic as well as foreign governments and other private organizations. Furthermore, by reviewing the status of oversea's diving organizations the proposition was made which can lead the commercial diving sector to international cooperation.

• Defense and Technology
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• no.7 s.233
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• pp.60-69
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• 1998

독일 HDW조선소의 Bonn 지사장으로 근무중인 Udo Ude씨는 209급 잠수함 해외수출 성공사례를 다음과 같이 분석하였다. -1970년 독일해군용 206급 계약시 잠수함을 해군에 인도하기 전까지의 모든 과정을 조선소가 직접 책임지고 수행토록 하는 General Contractor Principle(총괄계약자 원칙)에 의해 확보된 기술인력, 자재/장비 공급원 발굴, 축적된 장비간 연동과 체계통합 기술 및 경험 –대부분의 탑재 장비를 국내 방산업체로부터 조달할 수 있는 탄탄한 국내 기술력 –매 신규사업마다 성능향상을 위한 과제선정 및 계속적인 연구 –정부 소유 시험시설 및 장비 활용과 제반 기술관리에 있어서 민.관.군의 적극적이고 긴밀한 지원체제 구축 이러한 성공사례 분석에 독일 현지에서 느낀 필자의 경험소감을 추가하면 다음과 같다. –규정을 잘 지킬 뿐만 아니라 타인의 잘못을 즉시 일깨워 주는 준법정신 및 고발정신 -2-3년 후의 휴가계획까지 수립하여 준비할 정도의 처절한 사전계획 및 준비정신 –불결한 것과 게으름을 참지 못하는 청결성 및 근면성 –누구든지 원하면 경제적인 부담없이 평생동안 공부할 수 있는 교육제도 –게르만족이 우월하다는 내면적 자부심 –작은 일이라도 모여서 토의하고 결론을 도출하기 좋아하는 공동체 의식 –약속을 철저히 지키는 정직성 –과거의 사실이나 유물을 철저히 보존하는 역사의식 –모든 분야에서 철저하게 운용되는 Meister(장인)제도 등

• Journal of Preventive Medicine and Public Health
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• v.31 no.1 s.60
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• pp.139-156
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• 1998

Diving related disease including decompression sickness is an important occupational health problem and diving fishermen remain a fairly hazardous occupation in Korea. To prevent diving related disease, we investigate diving patterns, incidence of diving related diseases, and contributing factors of 433 diving fishermen of three coast interviewing and mailing questionnaire in 1996. Mean age of divers was 39.7 years, ranged from 24 to 58 years, 92.8% of these were male, and 58.4% of divers were high school graduates. Mean duration of work as a diver was 12.9 years, ranged from 2 to 40 years. It was found that 70.4% of divers were using hookah system, 22.2% of helmet, and only 2.5% SCUBA. About half of them have learned diving skills from other divers. The peak season of diving was from April to June and mean working days were 20.3 days per month during the peak season. On the average, the divers dived 5-6 times, ranged from 1 to 10 times a day with 51.1 minutes of diving time, ranged from 20 to 120 minutes, at 30 m or 40 m in depth, and 35.5 minute of interval on surface. Most divers ascended slowly making decompression stop, yet the decompression profile used was not based on any scientific knowledge except for their own experiences. It appeared that each diving system had slightly different diving patterns. There were 282(65.0%) divers that suffered from DCS in 1995 and 31.2% of divers were given recompression therapy at a medical facility since they worked as diving fishermen. Skin and musculoskeletal complaints were common symptoms of DCS and 39% of divers experienced a voiding difficulty. In univariate analysis, females have an increased frequency of DCS(93% vs 66% for males). Old age, long duration of work, helmet diving, diving time, diving depth, repetitive diving, and blow up were all contributing factors to DCS. It was found that most diving patterns exceed no decompression limit and did not use the standard decompression table. This suggests that most of divers are at high risk of developing diving related disease with prolonged dives and lengthy repetitive diving in deep depth. Considering the diving patterns and economic aspect of professional diving, the incidence of DCS among diving fishermen in Korea will not decrease in the near future. These findings suggest that periodical health surveillance for divers, and education of health and safety are important for reducing the risk of diving related disease in the population of diving fishermen.

• Convergence Security Journal
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• v.15 no.3_1
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• pp.31-39
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• 2015

The Female workforces opened the combatants which was not allowed so far including the artillery in the army, air defense, and etc. to the woman soldier in 2014. I exceeded 10,000 people in 2015 and it is in the plan to be expanded to 4,450 officers, 6,374 noncommissioned officers in 2017. A navy is the plan which selects the woman officer to board a submarine since 2017 and which I board over 3,000 t level in a submarine. But the institutional supplementation about this is insufficient although the woman soldier increased depending on the policy's decision. The role of the woman soldier was expanded and it was the time when the system developmental about the woman soldier management which is consistent with the future war aspect will have to be guaranteed, and the clear standard including the post circulation to the starting in advance of the woman soldier and human resource expansion and treatment, and etc. is required. I supplement the current regulation which I am applying as man soldier Army and the same standard although the woman soldier and man soldier Army has a difference and I analyze the phenomenon and the developmental solution should be suggested about the woman soldier people management.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.9
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• pp.142-149
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• 2019

In the early 2000s, the Korean government first attempted to acquire nuclear-powered submarines as strategic assets. Acquisition of nuclear-powered submarines must overcome the challenges of the initial costs and operating costs of trillions of US dollars per ship, must be agreed to by the international community (including neighboring countries) and in a national consensus, and must have an established technical infrastructure (including manpower). The US navy has been working with governments that want to acquire nuclear propulsion warships since the 1950s, and in 1982, they enacted an executive order called the United States Naval Nuclear Propulsion Program to consolidate efforts and prepare for the future, which sets out the organizational structure, authority, and responsibilities of US governmental management, and integrates national efforts. This paper is to gain valuable wisdom from the U.S. Naval Nuclear Propulsion Program by analyzing all of its histories and contributions, thereby providing valuable lessons for a future program in Korea. It might not be possible to follow the U.S.A. one-on-one because of the scale of national and military forces, but at least we can avoid time and effort spent on trial and error.

• 한국방재학회:학술대회논문집
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• 2011.02a
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• pp.213-213
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• 2011

근래 이상기후에 의한 강우량 증대와 도시화에 따른 첨두유출량의 증대 및 도달시간의 단축은 기존의 유수지만으로 도시홍수를 대처하는데 그 한계점에 다다르게 되었다. 1990년대에 들어 각종 우수유출 저감시설의 활용으로 이상의 문제를 해결하고자 하는 노력들이 시작되었으며, 현재 신규개발지에 저류지와 같은 우수유출저감시설 설치를 법제도적으로 의무화 하고 있어, 전국적으로 천여개소의 저류지가 시설되어 있거나 계획 중에 있다. 저류지는 개발로 인해 증가된 첨두유출량을 개발전의 상태로 저감시키기 위하여 임시 또는 상시 저류하거나 저류능력 이상의 유출량에 대해서는 암거방류시설을 통해 하류부의 하천 또는 하도로 방류시키는 역할을 수행하는 수공구조물로서 일반적으로 저류지 계획 및 설계는 첨두유출량 증가분에 대해 초점을 맞추고 있을 뿐 방류시설에 대한 구체적인 설계는 이루어지지 않고 있는 실정이다. 또한 현재 국내에는 저류지 방류시설로 주로 사용되는 암거에 관한 설계규정이나 기법은 미미한 상태로, 한국도로공사(1991)에서 발표한 "도로배수계획"을 이용하고 있으며, 이는 미국 연방도로국(FHWA, 1985)에서 발표한 설계기법을 그대로 인용하고 있다. 즉, 지형 또는 현장 여건에 따라 암거 흐름의 8형식 중 하나의 형식으로 결정하고, 그 형식에 따라 관련도표를 이용한 시산법 또는 도식해법을 적용하여 유입부 상류수위를 산정함으로써 암거설계가 이루어진다. 하지만 이러한 암거설계 방식은 도로 배수암거에 적합한 것으로 저류지 배수암거에 적용하기에는 무리가 있다고 본다. 따라서, 본 연구에서는 저류지의 일반적인 특성상 암거흐름 8형식 중 Class-II군의 암거 상류부 수위가 잠수된 조건 즉, 평상시 저류지가 일정수위 이상의 저류량을 유지하고 있는 상태에서 저류지 암거방류시설의 대표적인 설계인자인 암거직경, 암거경사, 암거경사, 하류단 수위조건의 변화에 따른 상류부 수위변화를 유량별로 분석해 보았다. 방류 암거의 개수를 고려하기 위하여 암거상류부 수위와 암거직경의 관계해석 시 암거단면적을 이용하여 분석하였으며, 각각의 유량별로 상류부 수위와 암거단면적의 관계를 회귀식으로 제시하였다. 암거상류부 수위와 암거경사의 관계를 분석한 결과 암거경사가 5~20%로 변화할 때 암거상류부 수위의 변화는 2~5%정도의 매우 작은 변화를 보임을 확인할 수 있었으며, 암거길이의 경우는 해석 조건의 특성상 상류부 수위에 영향이 전혀 나타나지 않았다. 암거상류부 수위와 암거하류단 수위의 관계에서 암거상류부 수위는 암거하류단 수위가 암거직경과 퇴사위 높이의 합보다 암거하류단의 수위가 높아지는 시점부터 암거하류단 수위에 비례해서 증가되는 결과를 알 수 있었다.