• Journal of Chest Surgery
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• v.29 no.9
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• pp.940-944
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• 1996

Patients over 15 years of age who have undergone a surgical correction of congenital heart disease at Kyungpook University Hospital during the period of January 1990 through October 1994 have been reviewed . One hundred forty three, 22.4 % of 628 operations, which have repaired congenital heart diseases during this period were adult patients. There were 23 patients under 20 years of age, 58 between 20∼29 years, 34 between 30∼39 years, 18 between 40∼49 years, and 10 between 50∼59 years. The most common defects were atrial septal defects which accounted for 73 cases (51.1 %) and other common anomalies were ven- tricular septal defects (57 cases, 39.9 %), tetralogy of Falloffs(4 cases, 2.8%) in order of incidence. There were 10 non-fatal operative complications (6.9 %) but there was no operative mortality. This study shows the incidence of operable congenital heart diseases in adults and the fact that it could be corrected surgically with low mortality and morbidity.

• Journal of Digital Convergence
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• v.13 no.11
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• pp.7-14
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• 2015

The purpose of this study is to present the base for activation policy for cost estimation guidelines of e-Learning content development. To achieve this purpose, this study investigates the effectiveness of cost estimation guidelines of e-Learning content development through a survey about executives and employees in the e-Learning industry and analyses them statistically. According to an analysis, companies(which abandoned order because the amount of money (cost) of e-Learning contents ordering is low and suffered a loss after acquiring e-Learning contents project order) have a relatively negative awareness about the effectiveness of cost estimation guidelines of e-Learning contents. On the other hand, contents focused companies have a relatively positive awareness about the effectiveness of cost estimation guidelines of e-Learning contents. In conclusion, this study suggests that government should recommend and enact announce the use of cost estimation criteria(guidelines) of e-Learning content development and provide the institutional tools soon as possible.

• Journal of the Korean earth science society
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• v.31 no.3
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• pp.205-213
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• 2010

A hydrochemical comparative study of groundwater in uraniferous sedimentary rock of the Ogcheon belt was carried out to investigate the genetic relationship between uraniferous groundwater of Daejeon area and uraniferous sedimentary rocks of the Ogcheon zone. The groundwater shows weak alkaline pH values rangingfrom 6.4 to 8.1 and low Eh values ranging from -50 to 225 mV. The groundwaters to Ca-$HCO_3$ type that shows high concentration of $Ca^{2+}$ and $HCO_3^_$ due to the dissolution of carbonate mineral in limestone. The concentration of uranium in the groundwater was measured very low below $3.2{\mu}g/L$, while it was detected as much as $1165{\mu}g/L$ in the mine waste water. The low Eh value of groundwater is one of the main causes of low uranium concentration of groundwater in uraniferous sedimentary rocks in the Ogcheon belt. It is suggested that the uranium of groundwater in granitic region of Daejeon area was not mainly provided from uraniferous sedimentary rocks in the Ogcheon belt.

• Journal of the Korean Society of Radiology
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• v.6 no.2
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• pp.121-127
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• 2012

Of this study, it was found that there were 250 mammographic units in total installed and used in the areas for this study, and 36 units were used in general hospitals, 53 units in hospitals and 116 units in clinics. That is, the units in clinics accounted for 50% out of the whole units. As for the image acquisition method, it was found there were 131 units using F/S, 67 units using CR and 7 units using DR respectively. At present, F/S system was mainly used in the areas. As for the materials of target/filter, it was found that Mo/Mo was mostly used (66%), followed by Mo/Rh (25%). As for the size of focus, both 0.1 mm for small focus and 0.3 mm for large focus were mainly used for the units.

• Journal of Korea Water Resources Association
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• v.31 no.2
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• pp.167-176
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• 1998

On steep hillslopes, saturation zone formations and subsurface flows were monitored through the observation systems of observation wells, tensiometers and trenches. By the 103 mm rain which had fallen on the hillslope with dry soil moisture, the saturation zone began to be formed at the top of hillslope during the rain and developed to be formed within a few hours after the end of rain on all hillslope. Subsurface water outflowed mainly from the soil profile of 0-40 cm depth, but did not outflow from the one of 40-80 cm depth. This saturation zone seemed to be formed by partially saturation of soil. This resulted for two reasons. Firstly, the saturation zone was formed by a smaller amount of rain than that required. Secondly the soil at a certain depth below the water table was unsaturated. Saturation zones formed by pre-rains responded rapidly to rains and subsurface water outflowed mainly from the soil profile of 40-80 cm depth simultaneously with the rising of the water level. The rates of subsurface discharge from the soil profile of 40-80 cm depth to the precipitation were related to the antecedent precipitation although the maximum water levels of saturation zone formed by four rains were similar.

• Korean Security Journal
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• no.17
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• pp.1-13
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• 2008

Conclusion is like below. First, as a private security area's mutual relationship and development device, it is necessary to bring up corresponding-terror expert. Second, a privatized corresponding-terror research center is necessary. Third, the importance of privatization's role for the corresponding-terror prevention law establishment. It is considered that a diversified examination research that can minimize a violation of human rights by bringing up various corresponding-terror expert, paradigm shift of workers related security area, and construct corresponding- terror education equipment as well as education content, it is not a special group's authority, should be continued by a following research. Academical area of terrorism's construction is necessary. You need to approach by private initiatively boldly with the academic world as an active mutual cooperation politically, culturally, socially, internationally, etc, rather than developing national institute initiatively. Also, in a following research, an academical research about a correlation of crime, war, terror should be done deeply, variously. It is necessary to establish an academic foundation of terror study.

• The Journal of Engineering Geology
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• v.17 no.4
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• pp.517-523
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• 2007

Geophysical surveys(seismic refraction, electrical resistivity, and ground penetrating radar) were performed to delineate the weathering zone associated with vadose water in Chojeong area and investigate the fault related fracture zones. On the basis of seismic velocity structures, weathering layer for the southwestern part is interpreted to be deeper than for the northeastern part. The depth to bedrock(i.e., thickness of weathered zone) from seismic refraction data attempted to be correlated with drill-core data and groundwater level. As for the investigation of geological discontinuities such as fault related fracture zone, seismic refraction, electrical resistivity, and ground penetrating data are compositely employed in terms of velocity and resistivity structures for mapping of surface boundary of the discontinuities up to shallow depth. Surface boundaries of fracture zone are well indicated in seismic velocity and electrical resistivity structures. Accurate estimation of weathered zone and fracture zone can be successfully available for mapping of attitude of vadose water layer.

• Journal of Internet Computing and Services
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• v.19 no.4
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• pp.83-93
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• 2018

This study analyzed the effects of women's SNS use on their alternative behaviors of managing health. This study paid attention to how women's behaviors of seeking information about poisonous menstrual products and alternative menstrual products would impact their intention to use alternative menstrual products. Mainly based on health belief model, 11 hypotheses were created and tested through a path analysis of survey data. Results from the path analysis indicated that SNS information about menstrual products were significantly associated with perceived advantage of alternative menstrual products and perceived sensitivity of poisonous menstrual products. In addition, four main factors-self-efficacy, perceived sensitivity, perceived advantage, and perceived disadvantage-were significantly associated with women's intention to use alternative menstrual products.

• Journal of Gifted/Talented Education
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• v.23 no.4
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• pp.615-632
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• 2013

The purpose of this study was to explore the implicit knowledge of creative person in Korea, China and Japan. To this end, participants of all ages in three countries (Korean 328, Chinese 388, Japanese 394) were required to fill out the survey about creative persons. The major results of this study were as follows: First, Korean and Japanese recognized most the characteristics of creative person as "original" at all ages, Chinese recognized as "intellectual" in most ages. Second, occupations of creative persons were classified into nine categories. Third, in Korea scientist and artist, in China politician, in Japan artist were the occupations of the highest frequency at all ages. These results of this study can be used as a basis for the research of implicit knowledge on creativity in East Asian countries. This study suggests that the implicit knowledge about creative person differs in three countries and cultural characteristics of each country should be considered in the study of creativity.

• Journal of the Korea Convergence Society
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• v.9 no.2
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• pp.165-170
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• 2018

The purpose of this study is to recognize the necessity of smart furniture for single - person households and to suggest final design. It is assumed that smart furniture that meets the demand can be released in the future. To this end, we intend to solve the needs of the smart technology of the subject through in-depth interviews and persona establishment through demand research. Currently, the number of single-person households is expected to increase steadily and become the most important form of household composition in the future. In the future, it will be analyzed based on the in-depth interview after the target selection for the target needs research. Then, after insights are gathered through in-depth interviews, we apply the applicable smart technology to create the expected scenarios and draw conclusions about how smart furniture will function in the future.