• Korea Journal of Hospital Management
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• v.12 no.1
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• pp.31-50
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• 2007

This study was carried out to analyze the present condition of high-price medical technologies in South Korea and to compare it with OECD countries. This study included 10 high-price medical equipments and used medical equipment registry data of Health Insurance Review Agency. The major findings of this study are as follows; Firstly, The number and growth of high-price medical equipments in South Korea is much higher than those in other OECD countries. There are many of high-price medical equipments even in clinics. Secondly, the percentage of old poor-quality medical equipments is very high, especially in clinics. This is because of high-price of medical equipments. The results of this study implicated that there is high possibility of inappropriate use of high-price medical technologies. This may result in the increase of health expenditure; therefore, there should be a kind of regulation policy to control amount and quality of medical equipment.

• Journal of Electrical Engineering and Technology
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• v.11 no.3
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• pp.699-706
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• 2016

Partial discharges (PD) lead to the degradation of high voltage cables and accessories. PD activities occur due to the existence of impurities, voids, contaminants, defects and protrusions during the manufacture and installation of power cables. Commonly, insulation failures occur at cable joints and terminations, caused by inhomogeneous electric field distributions. In this work, a blend of natural rubber (NR) and linear low density polyethylene (LLDPE) was investigated, and the optimal formulation of the blend that could resist PD was discussed. The experiments were conducted under a constant high voltage stress test of 6.5 kV AC and the magnitude of partial discharge activities was recorded using the CIGRE method II. Pattern analysis of PD signals was performed along with the interpretation of morphological changes. The results showed that the addition of 10 wt% of NR and 5 wt% of Alumina Trihydrate (ATH) provided promising results in resisting PD activities. However, as the NR content increased, more micropores existed, thus resulting in increased PD activities within the samples.

• Korean Journal of Human Ecology
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• v.13 no.2
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• pp.195-213
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• 2004

The researcher worked with 1001 middle and high school students so as to inquire into the family-related variables affecting the adolescents' school maladjustment from the results of the average, standard deviation and multiple regression analysis. The followings were the major findings. 1. The study activity was the first thing that the subjects did not adjust among their school life and the relationship with teacher, with opposite-sex friends, the rule-keeping and the friendship were the next in the order. 2. The researches on family-related variables affecting the school maladjustment were performed by gender (male / female), gender/school(male and middle / male and high / female and middle / female and high), school(middle / high) and system(academic / vocational). The most influential variables were the structural environment one in case of male students and male and middle school students; the parent-relationship one in case of female students, female and middle school students, female and high school students, middle school and vocational high school students; and the physical environment one in case of high school students, male and high school students and academic high school students.

• Journal of the Korean Society of Costume
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• v.51 no.6
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• pp.39-51
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• 2001

The purpose of this study is to offer basic data to manufacture superior girdle, by finding out wearing effect and wearing comfort after select high-functional Girdle and usual girdle on the market, and by analyzing the features of superior girdle in wearing effect and comfort. The results of this research are as follows : 1. As a result of surveying on the wearing feeling of girdle, the tightening effect of high-functional girdle was high. In particular. high-functional long type girdle was excellent as for tightening thigh, but usual girdle was excellent as for general comfortable feeling. In the Questions for comparison and evaluation, the frequency of high-functional long type girdle was highest. 2. As a result of examining the wearing comfort and effect of girdle by each type, the wearing effect of high-functional long type girdle was superior, and the wearing feeling of high-functional long type girdle was higher relatively than that of other types. But, from questions on comfortable feeling, the wearing feeling of usual long type girdle was superior. Generally, the wearing feeling and effect of high-functional long type girdle were superior, since the abdomen was pressed by high-waist type hard material and increased functionality such as attaching treatment to support hip and double treatment to tighten a thigh.

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.43 no.3
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• pp.121-127
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• 2011

This study used two types of rheology modifiers including an alkali-swellable emulsion (ASE) and an surface-adhesion emulsion (SAE) to elucidate their effects on high shear viscosity and dynamic penetration behavior among the flow properties of high solids coating. Since rheology under high shear and dynamic penetration behavior significantly affect the quality of coated paper in case of high solids coating, it is very important to examine the variations in rheology of high solids coating color by rheology modifier. It was found that the high solids coating color prepared with the SAE type showed superior dynamic penetration behavior and high shear viscosity than that with the ASE type rheology modifier.

• Proceedings of the Korean Vacuum Society Conference
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• 2010.08a
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• pp.306-306
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• 2010

A high density (> $10^{11}\;cm^{-3}$) and low electron temperature (< 2 eV) plasma is produced by using a conventional HF (13.56 MHz) plasma enhanced chemical vapor deposition (PECVD) with an additional ultra high frequency (UHF, 314 MHz) plasma source utilizing two parallel antenna assembly. It is applied for the high rate synthesis of high quality nanocrystalline silicon (nc-Si) films. A high deposition rate of 1.8 nm/s is achieved with a high crystallinity (< 70%), a low spin density (< $3{\times}10^{16}\;cm^{-3}$) and a high light soaking stability (< 1.5). Optical emission spectroscopy measurements reveal emission intensity of $Si^*$ and $SiH^*$, intensity ratio of $H{\alpha}/Si^*$ and $H{\alpha}/SiH^*$ which are closely related to film deposition rate and film crystallinity, respectively. A high flux of precursor and atomic hydrogen which are produced by an additional high excitation frequency is effective for the fast deposition of highly crystallized nc-Si films without additional defects.

• Laser Solutions
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• v.12 no.4
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• pp.12-16
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• 2009

The engineering ceramic is one of the materials advantageous in various conditions with high strength, endurance at high temperature, abrasion resistance and corrosion resistance, etc. However, due to high strength and high brittleness, ceramic incurs high costs and long time on finishing process required after sintering. So a process for obtaining wanted measurements of them has been studied using the high temperature which makes ceramics softened and heat affected recently. This study makes an estimate of laser-assisted machining (LAM) if an economically practical process for manufacturing precision silicon nitride ceramic parts using laser beam. In this study, mechanical properties of silicon nitride at high temperature were observed. And during the LAM, it was observed that cutting force and tool wear were reduced and oxidation of machined surface was increased according to a increase of laser power.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2007.04a
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• pp.9-12
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• 2007

Recently, research and development related to high strength concrete for the high rise and large scale reinforced concrete building has been actively promoted in worldwide by national and private research project. But, it is reported that violent explosive explosion would be happened when it was exposed in fire. In the existed study, a explosion in a reinforced concrete structure looses the organism by the different contraction and expansion of hardened cement paste and aggregate, and causes crack by thermal stress. In case of the Europe, Japan and America, they have studied the explosion for a long time. However it would hardly study the explosion in domestic, So it is needed base on mechanical properties of fire deterioration in high strength concrete. Therefore, this study is intend as an mechanical properties of specimen to high heating by heating and load test machine and $700^{\circ}C$. As a result, it is willing to propose fundamental data for quick and accurate diagnosis of deteriorated concrete structure by fire damage with experiment according to the design high strength concrete.

• Journal of The Korean Association For Science Education
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• v.17 no.4
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• pp.415-423
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• 1997

The purposes of this study were to investigate the intercorrelations among various motivational patterns and learning strategies and to examine the differences in motivation and strategy usage in terms of students' science achievement level, gender, and grade. A questionnaire on achievement goal, self-efficacy, self-concept of ability, expectancy, value, causal attributions, and learning strategies was administered to 360 junior high/high school students (178 males, 182 females). Students who adopted performance-oriented goal tended not to be task oriented. Task-oriented students had high levels of self-efficacy, high self-concept of ability, and expectancies for future performance in science. They also valued science and attributed thier failures to the lack of effort. However, performance-oriented students evaluated their ability negatively, did not value science, and attributed thier failures to uncontrollable causes. With respect to learning strategy, task-oriented students tended to use deep-level strategy, whereas performance-oriented students tended to use surface-level strategy and not to use deep-level strategy. High-achieving students, boys, and junior high school students were more task-oriented, evaluated their ability more positively, and valued science more than low-achieving students, girls, and high school students, respectively. High-achieving students and boys also used deep-level strategy more than each of their counterparts. However, no significant difference in learning strategy was found between junior high school students and high school students. Educational implications of these findings are discussed.

• Journal of the Korean Institute of Educational Facilities
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• v.12 no.4
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• pp.5-16
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• 2005

The objective of this study is to analyze the layout types by the characteristics of 24 high school sites in Gyeonggi-do. These 24 high schools were built to establish the learner-oriented education in high schools to comply with the 7th Curriculum of the Ministry of Education. The 7th Curriculum has been altered from the supply-oriented to the demand-oriented and learner-oriented one since the year of 2000 to meet the demands of the fast moving society. For this study, the following researches have been conducted; 1) Literature were reviewed to examine the educational systems that supported architectural planning of existing high schools. 2) The environment and characteristics of the high school sites were investigated and current move in planning of high school site was examined. 3) Layout types were classified by the configurations of existing high school buildings. The output of this study was used to find the architectural data such as building site, building coverage, floor area ratio, the number of floors, site shape, direction and front of building.