• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2017.11a
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• pp.86-87
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• 2017

여객선의 안전은 인명의 안전과 직결되므로 이에 발맞추어 국제해사기구 (International Maritime Organization, IMO)는 빈번히 발생하는 선박의 전복 사고로 인한 인명 피해를 최소화하기 위하여 승객탈출분석 (Passenger Evacuation Analysis) 적용 지침을 꾸준히 개정 및 보완하고 있다. 승객탈출분석의 목적은 설계 단계에서의 탈출 설비의 배치 적합성 판단 및 배치된 탈출 설비를 이용하여 지침 상 규정하는 최대허용탈출시간 (Maximum allowable evacuation duration) 내에 탈출이 가능한 지를 분석하는 것이다. 본 논문에서는 승객탈출분석에 관한 지침의 개정 동향 및 최근 개정된 승객탈출분석 지침 (MSC.1/Circ.1533)의 개정 방향에 대하여 소개하고자 한다. 또한 탈출 해석 관점 한국해양과학기술원에서 개발 중인 인명대피안내시스템의 유효성을 검증하기 위하여 2016년 10월 수행 된 인명대피실험과 지침 상 규정하는 고도화 알고리즘 (Advanced algorithm) 기반 승객탈출 시뮬레이션 (Maritime EXODUS)의 비교 결과를 바탕으로 해당 지침 적용 시 고려사항에 대하여 고찰하고자 한다.

• Korean Journal of Social Welfare
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• v.62 no.3
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• pp.5-29
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• 2010

This study examines the welfare dynamics in Korea under the scheme of National Basic Livelihood Protection Program(NBLP). Data are drawn from Korean Welfare Panel study 2005~2007. Main findings are summarized as follows. First, the exit probabilities show a declining tendency with time on welfare increases. If the exit probabilities indeed decline over time, the earlier years on welfare deserve more interest in the policy perspective. Moreover, the vast majority of recipients are long-termers. Further efforts are needed to increase self-sufficiency through providing genuine opportunity and necessary support for recipients. Second, out-of-poverty exit and out-of-system exit are quite different in their properties. The results from the multivariate analysis confirm that the dropouts through out-of-system exit are virtually the same with those who remain on welfare. These results imply that the government should not resort to the negative policy proposals such as time limit and strengthening sanctions. Third, several explanatory variables have anticipated effect on welfare exit probabilities. Age, education, health, marital status, the presence of children, employment status have a certain level of impact on exit, with the only exception of gender. Since the identification of the determinants can facilitate sensible targeting on the potential leavers, these results have some implications on policy proposals.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.06a
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• pp.439-440
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• 2013

SOLAS 제II-2장 제13.6규칙에는 로로구역의 탈출설비에 대해 규정을 하고 있다. 하지만 다소 모호한 표현을 포함하고 있어 이 연구에서는 규정 적용 현황을 소개하고 화재시 선원의 안전을 확보하고 합리적인 탈출을 위한 통일해석 개발의 필요성을 제안한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.06a
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• pp.445-446
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• 2013

SOLAS II-2/13.4에 의해 기관구역에서의 탈출설비는 두 개의 강재 사다리가 요구되는데 하나는 비상탈출 트렁크(Escape Trunk)에 위치해야 한다. 하지만 트렁크의 규정상 내부치수가 사다리 및 비상조명을 포함한 사이즈인지 명확한 해석이 없다. 이 연구에서는 기관구역 탈출설비의 내부치수의 합리적인 적용에 대한 제안을 한다.

• The Journal of the Korea Contents Association
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• v.16 no.9
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• pp.12-21
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• 2016

The emergency evacuation support system supports evacuation assistance when an urgent disaster occurs. We have implemented evacuation route search algorithm to assist people's escape when a disaster occurs such as fires or terrorism in the building. The algorithm will guide the escape route at the fastest emergency exit of each region at the emergency state. The algorithm calculates the escape route by applying the weighting factor of age groups and population density around the emergency exit and of other regions. So the system helps escape to bypass the crowded emergency exit and the disaster area, and reduces the congestion of emergency exit and overloading of evacuation route.

• Journal of Korea Game Society
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• v.21 no.5
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• pp.29-40
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• 2021

This study investigates concept of escape room game and sorting story type based on 428 games at 141 escape room actually played. The classification were processed by Act 3 of Trottier, and as a result of the investigation, result shows three story types in offline room escape games. As for the types shown as, reason, condition and purpose of escape are guided before entering the room; a+b+c, purpose of escape is guided before entering the room but conditions for escape should be determined through play; a+b(c), and finally figure out the condition, purpose of the game during the play;(a+b+c).

• Journal of Korean Society of Spine Surgery
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• v.25 no.4
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• pp.175-179
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• 2018

Study Design: Case report. Objectives: We report 3 cases of loss of disc height after spontaneous regression of a herniated lumbar disc. Summary of Literature Review: Reports of spontaneous regression of a herniated lumbar disc were identified. Materials and Methods: We conservatively treated 3 patients who were diagnosed with a herniated lumbar disc. During outpatient follow-up, radiating pain improved in all patients, but they complained of chronic lower back pain. Magnetic resonance imaging (MRI) was performed for diagnostic purposes. Results: On MRI, spontaneous regression of the herniated lumbar discs was observed, but loss of disc height was also found. Conclusions: A herniated lumbar disc may be a risk factor for loss of disc height. It is important to recognize that a patient with a herniated lumbar disc can struggle with chronic lower back pain even if spontaneous regression of the herniated lumbar disc occurs.

• Korean Journal of Social Welfare
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• v.62 no.4
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• pp.249-274
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• 2010

This study examines a casaul relationship between depression and welfare transitions of the National Basic Likelihood Protection Program. From a social selection perspective, prior high levels of depression are likely to select people into welfare or serve as a barrier to leaving welfare. From a social causation perspective, entering or exiting welfare can change the levels of depression. These hypotheses were tested using KOWEPS(Korean Welfare Panel study) 2005~2007. The results are as follows. First, entering welfare clearly increases the levels of depression. The increased economic stress resulting from falling into poverty seems to play a major role in the negative effect of welfare entry. Second, exiting welfare does not decrease the levels of depression. However, when welfare exits are classified into distinctive categories, welfare exit combined with concurrent poverty exit is likely to decrease the levels of depression. Third, high levels of depression clearly increase the probability of entering welfare regardless of the prior poverty status. Fourth, high levels of depression do not decrease the probability of exiting welfare, but rather increase the probability of an administrative disentitlement which leads to even worse economic conditions after exiting welfare. One implication of these findings is that negative policies such as time limit and strengthening sanctions can increase the number of welfare cyclers who are able-bodied but mentally weak.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.5
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• pp.2133-2141
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• 2012

The Purpose of this study was to report magnetic resonance imaging(MRI) changes of six cases of Lumbar herniated disc which was treated with spinal decompression therapy, oriental medical therapy. 'Disc heights' were measured on sagittal view of $T_2$-weighted MRI. Size of the herniated disc was measured by MRI and 'disc herniations index'. The grading system and algorithm for 'disc degeneration' were based on MRI signal intensity, disc structure, distinction between nucleus and anulus, and disc height. Data for disc height, disc herniations index and disc degeneration grade were collected before and after the treatment together with calculation from the MRI. Case studies were showed that decompression therapy for the herniated disc has an positive effect on disc herniations index, disc regeneration, not disc heights. The clinical evidence for the use of decompression in herniated disc remains inconclusive because of limited researches. Further trials, which give attention to these areas, are needed before any firm conclusions may be made.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.18 no.6
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• pp.1441-1446
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• 2014

For the escape from a maze, the cooperative method by robot swarm was proposed in this paper. The robots can freely move by collecting essential data and making a decision in the use of sensors; however, a central control system is required to organize all robots for the escape from the maze. The robots explore new mazes and then send the information to the system for analyzing and mapping the escaping route. Three issues were considered as follows for the effective escape by multiple robots from the mazes in this paper. In the first, the mazes began to divide and secondly, dead-ends should be blocked. Finally, after the first arrivals at the destination, a shortcut should be provided for rapid escaping from the maze. The parallel-escape algorithms were applied to the different size of mazes, so that robot swarm can effectively get away the mazes.