• Proceedings of the Korean Nuclear Society Conference
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• 2005.10a
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• pp.414-415
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• 2005

• Proceedings of the Korean Nuclear Society Conference
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• 2004.10a
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• pp.1403-1404
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• 2004

• Proceedings of the Korean Magnestics Society Conference
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• 2000.09a
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• pp.273-276
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• 2000

• Journal of Radiopharmaceuticals and Molecular Probes
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• v.3 no.1
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• pp.18-24
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• 2017

Patient-specific image-based internal dosimetry involves using the patient's individual anatomy and spatial distribution of radioactivity over time to obtain an absorbed dose calculation. Individual absorbed dose was calculated by accumulated activity multiply S-value of each organs. The aim of this study was to calculate the S-values using Monte Carlo simulation in monkey and mouse and evaluation of absorbed dose in each organ. Self-irradiation S-value of monkey heart self-irradiation was 3.15E-03 mGy-g/MBq-s, lung self-irradiation was 8.94E-04 mGy-g/MBq-s and liver self-irradiation S-value was 2.23E-03 mGy-g/MBq-s. Mouse heart self-irradiation S-value was 1.95E-01 mGy-g/MBq-s, lung was 9.59E-02 mGy-g/MBq-s, and liver was 1.40E-03 mGy-g/MBq-s. The results of this study show that the calculation protocol of image based individual absorbed dose of each organ using Monte Carlo simulation. Therefore, this study may be applied to calculate human specific absorbed dose.

• The Korean Journal of Community Living Science
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• v.24 no.1
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• pp.99-118
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• 2013

The purpose of this study was to examine the effects of parenting efficacy, parenting behavior, and parenting stress on children's problematic behavior in Korea and China. The subjects were 292 children and their mothers who are caring for their 3-5 years old children in Korea and China. Data was collected using a parenting efficacy index, parenting behavior index, parenting stress index and child behavior check list. The data were statistically analyzed using t-test, one-way ANOVA (Scheff$\acute{e}$ test), correlation analysis and multiple regression analysis. The study showed that there were no significant differences in parenting efficacy, parenting behavior, parenting stress and children's problematic behavior in Korea and China. There were some significant differences in children's problematic behavior according to the socio-demographic variables, that is the gender of the child, the mother's education, the father's education, in Korea and China. Correlation analysis indicated that the parenting efficacy, parenting behavior, parenting stress and children's problematic behavior in Korea and China had significant correlations in some sub-variables. It was also found that the gender of the child, the mother's education, the father's education, the frustration and uneasiness of the parents, the control behavior, and the stress of parent-child dysfunctional interaction, were all significant predictors of the preschool children's problematic behavior in Korea, and the mother's education, the family income, the affection behavior, the rejection behavior, and the control behavior, were all significant predictors of the preschool children's problematic behavior in China.

• Strategy21
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• s.39
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• pp.140-162
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• 2016

The construction of Jeju Naval Base was finally completed and donated to the Republic of Korea Navy on February 26th this year. There is no doubt that the new base will contribute to the substantial augmentation of Korea's naval power and maritime security. However, we should note that the new naval base took a long and hard twenty-three years to be completed. In the 21st century, Korea should adopt a new strategy that can fulfill the security requirements of Korea for the new age of international relations. The 21st century is characterized by globalization, and in the world of globalization, a national boarder has become meaningless. In the late 20th century, after the Cold War, trade between countries have greatly increased and so did the importance of the seas. Having transformed from an agricultural country into a commercial country, Korea went from a continental state to a maritime state. Korea has become the 9th largest trading state, and obviously, the importance of the sea has become significant. Korea's national strategic focus needs to be on the sea for national survival. Thus, since the 1990s, the Korean Navy has planned to build the Jeju Naval Base. Jeju, due to its geopolitical characteristics, is extremely important to the 21st century Korea's economy and national security. Jeju is the starting point of the sea route that reaches out to the world, and at the same time, the ending point of the sea route that heads towards Korea. Jeju is located in the center of Northeast Asia and thus, Jeju Naval Base is extremely important for the area's security and order. Jeju Naval Base will be very useful not only for the maritime security of Korea, but also for keeping peace and order in Northeast Asia. Jeju Naval Base was the minimal effort against the six sea route security threats towards Korea. The six sea route threats are: 1) Threat from North Korea; 2) China's Threat towards Korea's sovereignty; 3) China's treat towards Korea's fishery; 4) Threat from Japan; 5) Threat towards Korea's sea routes; 6) Threat from recent phenomena of isolationism of the United States. Jeju Naval Base is built for both warships and civilian ships--such as cruise ships--to use. Just like the United States' Pearl Harbor, Jeju Naval Base will become not only the largest military base, but a beautiful tourist site.

• Journal of the military operations research society of Korea
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• v.8 no.2
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• pp.31-35
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• 1982

Recently, Park [1] proposed an algorithm for the optimum spare-part stock level in an (S-1, S) inventory system for small fleet. This paper reports validative GPSS simulation results and numerical experiences with the algorithm.

• Proceedings of the PSK Conference
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• 2000.04a
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• pp.170.3-171
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• 2000

• Proceedings of the Korean Nuclear Society Conference
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• 2005.10a
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• pp.344-345
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• 2005

• Proceedings of the PSK Conference
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• 2001.04a
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• pp.162.3-163
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• 2001