• The Research Journal of the Costume Culture
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• v.18 no.4
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• pp.670-686
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• 2010

This study aims at clarifying the action types of skin management which is base on age, marriage or not, family composition, school career, and income which are demographic variables centering around the lifestyle of middleaged and old age women. As for study method, this researcher executed literature study and questionnaire on adult women over 45 years old who dwell in Seoul and Kyounggi area. Survey period was Mar. 1, 2009 to Jun. 30. And, after distributing 1,000 copies of questionnaire, this researcher used effective 869 copies of questionnaire for analysis out of collected questionnaire, 895 copies. As for analysis method, this researcher executed DUNCAN test with factor analysis, reliability analysis, manin component analysis, K-average, multitude analysis, dispersion analysis and post verification by using SPSS 12.0 program. As for demographic feature for middle aged and old age women, 50~59 years old women were most by age as 302 persons(33.7%). It is emerging that spouse existence is very high as 674 persons(75.3%) in the answer for marriage or not, couple family to live with unmarried children is very high as 483 persons(54.0%) in the answer for family composition, leaving high school in mid-course or gradation of high school are very high as 356 persons(39.8%) in the answer for school career, income from 3 million Won under 4 million won is very high as 260 persons(29.1%) in the answer for monthly income of family members, and women to use under 50 thousand won is very high as 510 persons(57.0%) in the monthly average expense to be used for skin management. In this study, this researcher extracted total 5 factors (economic saving, displaying consumption, confidence inclination, centering around family, and leisure application) by executing factor analysis with 12 question items of lifestyle so as to grasp factor structure of lifestyle of middleaged and old age people, and whole explanatory variable quantity was 70.9%. This researcher named as economic saving type, diplaying consumption style, and type centering around leisure and family, after making multitude analysis about 5 factors analyzed by measuring lifestyle feature. As the result of structure analysis of question items of skin management(pursuit of skin management, life of skin management, and inclination of skin management), this researcher extracted total 3 factors, and whole explanatory variable quantity was 71.30%. Thus, it emerged that there is significant difference among groups.

• Journal of the Korean GEO-environmental Society
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• v.16 no.12
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• pp.5-12
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• 2015

Since blasting noise is impact noise, it will give a sudden shock to the human. In the case, such as the blast vibration, it has given aging buildings and livestock great damage to move the vibration along ground in nearby regions. In this study, the influence of the blasting generated during excavation was analyzed for effects on regional. A couple of field and laboratory surveys about geological were carried out to figure out the geological ratio in the study-performed area. Blast vibration noise was compared to the domestic and abroad case studies and each of the institutions permissible standards established the most appropriate criteria in site condition. The vibration velocity of blasting vibration exploits the values which were measured from test blasting on the ground in order to examine blasting effect. Considering the blasting point as the shortest distance from safety facilities (farms, private houses, etc.), the examination of the influence range, which was derived from the vibration velocity of blasting vibration, was performed to figure out how the point affected the safety facilities. Three-dimensional numerical analysis was performed a time history analysis in order to analyze the behavior of the structure for a dynamic blast load, which was determined in three directions of the blast vibration value. The results of three-dimensional numerical analysis and the blasting effect of blasting vibration estimation equation blasting vibration of impact circle with accompanying test blasting were compared. And the analysis confirmed similar results figures.

• The Journal of the Korea Contents Association
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• v.19 no.1
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• pp.339-349
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• 2019

The purpose of this study is to analyze the influential factors on the change in life satisfaction of elderly households. In this study, single and couple elderly households were defined as elderly households and the 2nd, 3rd, and 4th data of the Korean Longitudinal Survey of Ageing (KLoSA) provided by the Korea Employment Information Service (KEIS) were used. And 677 respondents aged 65 and over who had replied to all 3 sessions were included in the final subjects. multinomial logistic regression analysis was conducted to examine the influential factors on life satisfaction by the type of elderly households according to consumption pattern and the result showed that there were common influential factors such as house owning status and subjective health status and the factors that influence specific types such as expectancy of standard of living. In addition, in the longitudinal analysis of life satisfaction of elderly households, individual satisfaction level was confirmed to reduce with time and the factors that influence the longitudinal change in the level of life satisfaction of elderly households was analyzed through the conditional model of a latent growth model. The analysis results showed that household type, house owning status, and subjective health status influenced the initial value of life satisfaction of elderly households while household type and expectancy of living standard influenced the change rate of life satisfaction of elderly households. Based on the results of this study, the followings are suggested. There is a need to improve the life satisfaction of old age by increasing the opportunity for self-realization of elderly households and also policy approach should be made selectively taking various types into consideration.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.49 no.1
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• pp.75-84
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• 2021

The authors had presented two previous papers[1,2] on Helicopter/Rotorcraft develoment in Europe and US. Meanwhile, the next generation rotorcrafts, currently under development in US and Europe, have new configurations (tilt-rotor, coaxial, compound) of rotor-type vertical takeoff/landing rotorcrafts to overcome the disadvantages of traditional helicopters. For developing these new types of rotorcrafts, the upgraded conceptual design/comprehensive programs are required. In US and Europe, they are already developing new program tools with their technologies and database obtained during more than last half centuries. For us, many academia, research institutes and industrial engineers have experienced and developed core technologies on rotorcrafts (aerodynamics, structural analysis, flight dynamics, and noise analysis etc.) comparable to US and Europe during last couple of decades of developing helicopters and various configurations of rotorcrafts. In this paper, the pros and cons of conceptual design/comprehensive tools currently used in US and Europe have been summarized. Furthermore, the possibilities and problems to develope our own design and analysis tools have been studied.

• Women's Health Nursing
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• v.9 no.3
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• pp.245-255
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• 2003

Purpose: This study is to define the structural patterns of pregnancy motivation of married women. Method: Q-methodology was used on 110 statements collected from interviews with women and a literature review. 38 Q-samples were selected. The Q-samples were administerd to 30 randomized P-sample. Result: Data analysis of Q-type obtained by QUANL program shows three types of subjectivity in the perception of pregnancy motivation. Type 1, $\ulcorner$Family-connection strengthening$\lrcorner$, Pregnancy motivation is characterized by the tendency to make home, to tie family member, to connect couple firmly. Type 2, $\ulcorner$Self-satisfaction$\lrcorner$, Women of this type take pleasure and happiness from child rearing in terms of being a mother and having maternal affection. Type 3, $\ulcorner$Self-centered$\lrcorner$, This type of pregnancy motivation puts on high emphasis on self achievement and they make a family planning suitable for the maternal role. Conclusion: The stronger was women's pregnancy motivation, the more positive were women's pregnancy experience and maternal role attainment. Conclusion: Therefore, When nurses take care of pregnancy women, they should understand the women's psycho-social aspects and then apply a program of nursing intervention to the pregnant women, It is necessary to continue to study on social and psychological problems related to pregnancy.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.37 no.5
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• pp.433-441
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• 2009

Generally, the events in nature have multi-disciplinary characteristics. To solve this problems, these days loosely coupled methods are widely applied because of advantage of solvers which are already developed and well proved. Those solvers use different mesh system, so transformation and mapping of data are vital in the field of fluid-structure interaction(FSI). In this paper, the interpolation of deformation which is used globally and compactly supported radial basis functions(RBF), and mapping of force which use principle of virtual work are examined for computing time and accuracy to compare ability with simple 3-D problem. As the results, interpolation scheme of compactly supported radial basis functions are useful to interpolation and mapping for large-scale airplane in FSI with a k-dimensional tree(kd-tree) which is a space-partitioning data structure for organizing points in a k-dimensional space.

• Journal of Korea Society of Industrial Information Systems
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• v.16 no.5
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• pp.173-184
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• 2011

Today smart devices such as smart phones, smart pads and tablets have become necessities of modern people in both daily life and business as they have widely proliferated. One of the most popular application areas of smart devices is a game-related area. Among these applications social network games, played with other users through social networks, are ranked top in their popularity. Though much research of PC games and online games have been performed, little research of social network games and the factors affecting acceptance of social network games are not vigorous yet. Therefore, we aim to analyze the factors and their structural influence on acceptance of social network games. We add a couple of factors such as Social interaction, Mobility, Subjective Norm, and Flow reg arding the characteristics of social network games and analyze the structural relationships among these factors using Structural Equation Modeling. Analysis results and implications are suggested with concluding remarks.

• Journal of Korea Multimedia Society
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• v.19 no.2
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• pp.375-385
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• 2016

Recently, several implantable hearing aids such as cochlear implant, middle ear implant, etc., which have a module receiving power and signal from outside the body, are frequently used to treat the hearing impaired patients. Most of implantable hearing aids are adopted permanent magnet pairs to couple between internal and external devices for the enhancement of power transmission. Generally, the internal device which containing the magnet in the center of receiving coil is implanted under the skin of human temporal bone. In case of MRI scanning of a patient with the implantable hearing aid, however, homogeneous magnetic fields of the MRI might be interfered by the implanted magnet. For the above reasons, the MR image is degraded by large area of artifact, so that diagnostics are almost impossible in deteriorated region. In this paper, we proposed an external coil system that can reduce the artifact of MR image due to the internal coupling magnet. By finite element analysis estimating area of MR artifact according to varying current and shape of the external coil, optimal coil parameters were extracted. Finally, the effectiveness of the proposed external coil system was verified by confirming the artifact at real MRI scan.

• Journal of the Korean Society of School Health
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• v.11 no.2
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• pp.229-241
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• 1998

Because sexual awareness is changing, I have tried to classify university students' attitudes toward sex. This study examined male and female university students and used a Q-method to measure these attitudes. Out of a total of 202, 33 statements were abstracted, and a P-sample of 1-7 parties consisting of 26 persons were studied. I Q-sorted the statements with a standard of 9 points for normal distribution and analyzed the data by means of a Principal Component Analysis with a Quan PC Program. According to the result of this research, university students' attitudes toward sex are divided into three types. Type 1 are called open-minded open: They may have a surgical abortion in case of an unexpected pregnancy and sexual intercourse occurs when a man and woman feel love for each other. They don't see sexual intercourse as a means reproduction nor virginal purity as unconditional. It is remarkable that these students regard sexual intercourse as a natural thing and sex as a basic desire of human beings. In short, they show an open-minded attitude toward sex. Type 2 are supporters of virginal purity; They regard virginal purity with great importance. They insist that both man and woman should be chaste but that sexual intercourse before marriage is unfavorable only to the woman. They do not believe in sexual intercourse without love and emphasize purity in sex education. Differen from type 1, they are very negative about surgical abortion. Type 3 experss love through sex. They belive that sexual intercourse makes a couple happy and a way to express their affection for each other. In other words, the relationship between man and woman is improved through sexual intercourse. They do not think of sexual intercourse in terms of childbirth.

• Corrosion Science and Technology
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• v.18 no.6
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• pp.300-311
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• 2019

The corrosion behaviors of twinning-induced plasticity (TWIP) steels with different alloying elements (Cu, Al, Si) in a neutral aqueous environment were investigated in terms of the characteristics of the corrosion products formed on the steel surface. The corrosion behavior was evaluated by measuring potentiodynamic polarization test and electrochemical impedance spectroscopy. For compositional analysis of the corrosion products formed on the steel surface, an electron probe x-ray micro analyzer was also utilized. This study showed that the addition of Cu to the steel contributed to the increase in corrosion resistance to a certain extent by the presence of metallic Cu in discontinuous form at the oxide/steel interface. Compared to the case of steel with Cu, the Al-bearing specimen exhibited much higher polarization resistance and lower corrosion current by the formation of a thin Al-enriched oxide layer. On the other hand, Si addition (3.0 wt%) to the steel led to an increase in grain size, which was twice as large as that of the other specimens, resulting in a deterioration of the corrosion resistance. This was closely associated with the localized corrosion attacks along the grain boundaries by the formation of a galvanic couple with a large cathode-small anode.