• Journal of the Society of Naval Architects of Korea
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• v.55 no.3
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• pp.274-280
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• 2018

This paper deals with the calculation of vulnerable areas of critical components required for the assessment of naval ship's vulnerability. Taking into account the effectiveness of threatening weapons, the probability density function of damage was used to assess vulnerable areas or vulnerabilities of critical components. It is shown that the vulnerable area of critical component can be simply computed from the damage function. Considering the weapon effectiveness of fragmentation and explosion on the target, both Carleton Damage Function and Rectangular Cookie Cutter Function representing the probability of damage are applied to the vulnerable area assessment. Carleton damage function is utilized to describe the weapon-target interaction in the vulnerability analyses. A problem of blast effect against an assumed naval ship is chosen as a case study. Vulnerability is evaluated by applying the suggested method to the equipments arranged in the engine room of the virtual ship.

• Perspectives in Nursing Science
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• v.17 no.1
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• pp.1-11
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• 2020

Purpose: The purpose of this study was to develop a forest-based health promotion program for vulnerable school children. Methods: The specific process for program development involved establishing a program goal, assessing the needs of the participants, analyzing existing programs and constructing a forest-based program. Results: Each session of the program, which consisted of a total of 10 sessions, included 40 to 50 minutes of indoor education for children's physical and psychosocial health and 60 to 70 minutes of forest experience activities with nursing student mentors. For the application of the program, guidelines for mentor selection and prior education, physical environment check, children's safety, criteria for evaluation of the program effects and operation of the program were developed. Conclusion: This study presents the specific procedures and contents for developing a forest-based program for vulnerable school children. The results of this study will provide useful data to develop a community-based program to promote the physical and psychosocial health of vulnerable school children.

• Korea Journal of Hospital Management
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• v.26 no.3
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• pp.56-67
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• 2021

There are few domestic studies on medical services in medically vulnerable areas where medical use is not met due to a lack of medical resources. The past studies on smart medicine targeting medically vulnerable areas grasp only the overall satisfaction level, or the sub-dimensions of satisfaction are not classified clearly. Also, it lacks consideration of the patient's needs. This study aims to analyze the effect of users' experience of the smart medicine pilot project conducted in medically vulnerable areas on satisfaction and demand. The user's experience was measured by variables in the dimensions of structure, process, and outcome. Among the pilot project participants, 282 subjects responded to the 2019 survey. Using the hierarchical regression method, we tried to find out the determinants of satisfaction and service demands. Experience factors affecting satisfaction were found to be accessibility, certainty, effectiveness, and efficiency. In addition, it was found that the demand in their 60s was high and that accessibility, certainty, effectiveness, and efficiency had a statistically significant effect on the demand. It is expected that the smart medicine pilot project will be effectively operated by well utilizing the factors influencing satisfaction and demand revealed in this study.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.19 no.5
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• pp.29-45
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• 2016

This study identified vulnerable regions in the national parks of the Republic of Korea (ROK). The potential vulnerable regions were defined as areas showing a decline in forest productivity, low resilience, and high sensitivity to climate variations. Those regions were analyzed with a regression model and trend analysis using the Enhanced Vegetation Index (EVI) data obtained from long-term observed Moderate Resolution Imaging Spectroradiometer (MODIS) and gridded meteorological data. Results showed the area with the highest vulnerability was Naejangsan National Park in the southern part of ROK where 32.5% ($26.0km^2$) of the total area was vulnerable. This result will be useful information for future conservation planning of forest ecosystem in ROK under environmental changes, especially climate change.

• The Korean Journal of Health Service Management
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• v.7 no.3
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• pp.275-286
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• 2013

To identify the prevalence and its influencing factors on depression among elderly vulnerable people in one urban community. This study used data from 381 of elderly vulnerable people in the community. The prevalence of depression was found to be 51.97%. Multivariate logistic regression analysis shows that depression was more prevalent as people in female gender; people with lower self-esteem compared to those with higher self-esteem; in elderly who perceived lower social support compared to those who perceived higher social support; and in the older adults with limitation in instrumental activity of daily living. The finding of a significant association between gender difference; self-esteem; perceived social support, and limitation in instrumental activity of daily living and occurrence of depression expected to promote the screening strategy for elderly at risk of depression in Korean community.

• Korean Journal of Child Studies
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• v.23 no.1
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• pp.1-16
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• 2002

This study explored resilience and protective factors in children at-risk. Teachers of 755 children in child care centers replied to questionnaires regarding resiliency and behavior problems; children's mothers replied to questionnaires about risk factors, own parenting, and family hardiness. The data of 216 vulnerable children and 355 children in a comparative group who had not been exposed to any risk factors were analyzed. Findings showed that resilience was differentiated by gender and age; that is, resilience in the vulnerable group covaried as a function of gender and age. The resilience level of the vulnerable group was lower than the comparative group. Children with fewer behavior problems had a higher level of resilience, and resilience was higher for vulnerable children with higher levels of protective factors.

• Journal of Korean Library and Information Science Society
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• v.43 no.2
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• pp.53-75
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• 2012

In recent years, many studies on the public library services for individual vulnerable groups have been performed in Korea. From the standpoint of public libraries with limited human and physical resources, however, all proposed alternatives are difficult to accommodate due to overload and in an integrated perspective, the several alternatives have a logical contradiction and possibility of realistic conflicts. Focusing on these facts, this study proposed an integrated direction and strategic plan to strengthen knowledge and information services of public libraries for five vulnerable classes, ie., the disabled persons, multi-cultural families, the elderly, rural residents, basic living subsidies.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2006.04a
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• pp.29-40
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• 2006

Everybody may be vulnerable to fires depending on the time, place, and circumstances. Fire statistics show that the occurrence of fire death depends not only on the severity of a fire itself, but also largely on the conditions of occupants such as physical functions, the environment around occupants, and the type of facility where are fire occurs. The review of fire safety from the viewpoint of vulnerable populations does not simply mean additional special attention and care only to high risk groups, but instead it means significant review of fire safety design and systems for all people from a more universal standpoint. Therefore, in order to examine the strategies of a fire death-reduction program, safety measures suitable for the relevant high-risk groups considering the type of vulnerable person, the type of fire, and the type of building in residential occupancies. Solutions will require strenuous multilateral effort and flexibility.

• East Asian mathematical journal
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• v.37 no.5
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• pp.553-566
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• 2021

In the over-the-counter market, option's buyers could have a problem for default risk caused by option's writers. In addition, many participants try to maximize their benefits obviously in investing the financial derivatives. Taking all these circumstances into consideration, we deal with the vulnerable power options under a constant elasticity variance (CEV) model. We derive an analytic pricing formula for the vulnerable power option by using the asymptotic analysis, and then we verify that the analytic formula can be obtained accurately by comparing our solution with Monte-Carlo price. Finally, we examine the effect of CEV on the option price based on the derived solution.

• Journal of applied mathematics & informatics
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• v.41 no.1
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• pp.33-50
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• 2023

Foreign exchange options are derivative financial instruments that can exchange one currency for another at a prescribed exchange rate on a specified date. In this study, we examine the analytic formulas for vulnerable foreign exchange options based on multi-scale stochastic volatility driven by two diffusion processes: a fast mean-reverting process and a slow mean-reverting process. In particular, we take advantage of the asymptotic analysis and the technique of the Mellin transform on the partial differential equation (PDE) with respect to the option price, to derive approximated prices that are combined with a leading order price and two correction term prices. To verify the price accuracy of the approximated solutions, we utilize the Monte Carlo method. Furthermore, in the numerical experiments, we investigate the behaviors of the vulnerable foreign exchange options prices in terms of model parameters and the sensitivities of the stochastic volatility factors to the option price.