• KSTLE International Journal
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• 제3권1호
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• pp.30-37
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• 2002

There have been significant improvements in base oil quality in order to satisfy recent market needs. In particular requirements of passenger car motor oils have been leading the trend. Now, high quality base oils such as VHVI base oils and PAOs are to be formulated in order to meet the tight volatility specifications. The severe hydrocracking, hydro-isomerized dewaxing and hydro-finishing process with noble-metal based catalysts (named UCO lube process) developed by SK corporation has been introduced as one of economic hydroprocessing routes to produce high quality VHVI base oils and food grade white mineral oils from fuels hydrocracker residue. Product quality of UCO lube process is similar to PAO in. general performances and therefore provides satisfactory performance far all straightforward applications in general lubricants. However, when applied to specialty lubricants like transformer oils, spray oils and coning oils, severely hydrocracked base oils are known to have various compatibility problems with gas or surfactants formulated in them. These problems are related to the difference in their composition; inherent high paraffin contents and lack of dissolving ability, Fortunately, it was found that excellent specialty lubricants could be made by carefully selecting and formulating adequate additives and/or aromatic compounds. Moreover, these specialties with high quality VHVI base oils ofter various advantages over conventional base oil based products.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2006년도 하계종합학술대회
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• pp.371-372
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• 2006

In this paper, we propose a method that measures quality of digital correlator. Quality of digital correlator in field of image composition of radio astronomy have as important position for acquisition of radio wave image with high precision. Digital correlator should have wide bandwidth and high precision to study on deep space. Digital correlator, therefore, should be designed to have high speed processing and high precision. But, real time measurement of quality of digital correlator using acquisition data is difficult to compare accuracy of result because digital correlator should process a large quantity of data with high speed. Measurement method of quality, also, has intricate implementation of experiment equipment. this paper present methods that compose experiment equipment without external installation easily and verify quality of digital correlator perfectly.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2009년도 추계 학술논문 발표대회
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• pp.65-68
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• 2009

Recycled aggregate by the recycling construction waste has a lot of advantage such as the developing the alternative resource and protecting of environment. However, recycled aggregate is used as the low quality grade, because the technic to remove old mortar from aggregate is low level. To use the recycled aggregate as high quality grade, it is important to develop the technic to produce the high quality recycled aggregate. To manufacture the high quality recycled aggregate, old mortar attached on the aggregates should remove efficiently. Therefore, in this study, we suggested the optimum condition to remove old mortar effectively using sulfuric acid and low speed wet rotary mill for high quality recycled fine aggregate. The results shows that the recycled aggregate satisfy on the standards of KS F 2573 in density, absorption and solid volume when, adequate condition of sulfuric mole ratio and aggregate ratio are make.

• 품질경영학회지
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• 제28권3호
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• pp.145-154
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• 2000

Effective management of knowledge is essential to keep up with demands of this challenging information age. The first step for this kind of management would be to define indicators to evaluate the quality of knowledge. In this paper, we use five latent variables (intrinsic quality, representational quality, ease of use of quality, maintainable quality, usage of quality) as basis for a preliminary path analysis for knowledge management. Preliminary study results showed that high intrinsic quality does not necessarily guarantee high frequency of use. A modified questionnaire is made and is used for SERVQUAL. The result of SERVQUAL shows that customers are not relatively happy about both intrinsic quality and its ease of use. Additional path analyses are done for both expected and observed quality indicators. The path model based on the expectation indicated that the presentation method of knowledge would induce its easy maintenance while that based on observation did not back up the same phenomenon.

• 통상정보연구
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• 제15권3호
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• pp.25-39
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• 2013

본 연구는 광주와 주요 교역대상국인 미국, 일본, 중국 간 산업내무역을 분석하였다. 산업내무역 분석은 먼저 수평적 산업내무역과 수직적 산업내무역으로 나누고 다시 수직적 산업내무역 중에서 임계치를 0.25로 선정하여 저품질 수직적 산업내무역과 고품질 수직적 산업내무역을 하는 제품으로 나누어 살펴보았다. 광주는 중국과 저품질 수직적 산업내무역을 하는 제품이 거의 없으며 일부 품목에서는 수평적 산업내무역을 하고 있는 것으로 나타나 광주가 중국에 고품질의 제품을 많이 수출하고 저품질 제품을 수입하고 있다는 것을 알 수 있다. 반면 일본 또는 미국과는 주로 저품질 산업내무역을 하고 있어 저품질 제품을 수출하고 고품질 제품을 수입하고 있는 것으로 나타났다. 하지만 중국과는 다르게 고품질 수직적 산업내무역도 하고 있는 것으로 나타났다. 이러한 분석결과에 따라, 수출마케팅 방안으로는 고부가치형 수출체제로의 전환, 성숙단계별 차별화 전략, 현지진출 네트워크 구축, 지역 내 중소기업의 네트워크 구축, 무역전시회에 대한 정부의 지원, 지방 중소기업에 대한 특화 프로그램을 제시하였다.

• 복식문화연구
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• 제24권5호
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• pp.653-669
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• 2016

This study examined how Chinese tourists' beauty tour preferences and attitudes toward Korean culture impacted their purchasing behaviors, repurchasing intentions, and the likelihood that they would recommend the products and services they received. Between the 10th and 21st of June, 2016, a total of 277 questionnaires were distributed in Seoul, Busan and Daegu using SPSS 21.0. On the surveys, beauty tour preferences were divided into the following categories: human service, high quality service, convenience accessibility & cost, and facility & atmosphere. The study found that high quality service and convenience & accessibility significantly affected respondents' purchasing intentions, with high quality service showing the higher standardized beta value. Friendliness to Korean culture also had a significant impact on beauty tour purchasing intentions. Preference for human service, high quality service, and facility & atmosphere significantly affected the purchasing intentions and the likelihood o f respondent recommendations, with higher standardized beta values shown (from high est to lowest) in the preference for facility & atmosphere, and preference for human service and high quality service respectively. Concerning perceptions of beauty products, preference for quality had a significant impact on the repurchasing intentions and intentions of respondents to make recommendations, as did the respondents', friendliness toward Korean culture. This study suggests that, to be most effective, beauty tours should emphasize human service and facility & atmosphere, as well as high quality service. In addition, preference for beauty services or products, and friendliness to Korean culture must be considered.

• Child Health Nursing Research
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• 제21권3호
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• pp.195-203
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• 2015

Purpose: This study was done to investigate quality of sleep and heart rate variability by the physical activity in high school students. Methods: A survey that measures physical activity and quality of sleep was distributed to 118 students at Y High School. Heart rate variability was obtained using the LXC3203 heart rate monitor. The data of 105 students were analyzed using descriptive statistics, t-test, x2-test, and ANOVA with $Scheff{\acute{e}}$ test. Results: Boys and students with part-time jobs had significantly higher physical activity. The quality of sleep was significantly high when the students were non-smokers, felt healthy, happy, less stressed, and satisfied with their school lives. Mean heart rate was significantly higher among girls, and standard deviation from normal to normal R-R intervals were high in boys. Physical activity had no significant relationships with quality of sleep and heart rate variability. Conclusions: Physical activity should be encouraged for high school students, especially for girls. An experimental study with different intensity and time of physical activity is recommended to examine the relationships with quality of sleep and heart rate variability in the future.

• 한국병원경영학회지
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• 제22권1호
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• pp.10-20
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• 2017

Purposes: This study analyzed activities for improvement of quality of care in nursing units to identify group-level success factors of quality improving efforts. Methodology/Approach: Research subjects were 31 general wards of C university hospital, which has 1,200 beds. Data were collected through survey and focus group interview. The mean value of nurses in a ward was converted to unit-level variable value of the ward. The SPSS 24.0 version was used to analyse the data. The units were classified into two groups, high performing and low performing, by the subjective level of quality improvement performance. Findings: The main findings are as follows: 1. The high performing groups participated more in education related to quality improvement and showed more quality improvement cases in progress than that of their counterpart. 2. The high performing group's nurses show more positive perception and attitude on quality improvement activities, and they have positive assessment on the necessity, effect, satisfaction about the quality improvement activities. 3. Middle managers' ability, attitude, motivation, and effective communication across members of the ward played pivotal roles in boosting the quality improvement activities of wards.

• 한국가구학회지
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• 제22권1호
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• pp.42-53
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• 2011

This article aimed at identifying the concept of 'artistic-quality' of furniture and presenting the concept of 'artistic-quality based furniture creation' as the future direction of furniture design. For this, the authors approached to the theoretical background of the concept of artistic-quality, and then examined the prospect of practical application of the concept by analyzing the tendencies in today's art furniture. In this light, 'artistic-quality' of furniture could be understood as a quality that triggers the designer's venturous spirit throughout the process of furniture creation, so that the designer keeps seeking for the novelty and innovation in his experimental design and process. The feature of the current tendencies of art furniture in terms of the expression and effect, which could explain this venturous spirit of artistic-quality based furniture creation, could be summarized as follows; first, High-touch: Furniture that exemplifies the artistic-quality by specific texture of handmade quality, second, High-feeling: Furniture that arouses the new feelings and new concepts of furniture structure & function by experiments on new abstract forms of furniture, and third, High-mentality: Furniture that leads us to the sphere of subtle aesthetic recognition and mentality with its specific poetic expression and sensibility.

• 한국멀티미디어학회논문지
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• 제21권9호
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• pp.1027-1034
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• 2018

CCTV has been known to possess high level of objectivity and utility. Hence, the government has recently focused on replacing low quality CCTV with higher quality ones or even by adding high resolution CCTV. However, converting all existing low-quality CCTV to high quality can be extremely costly. Furthermore, low quality videos prior to CCTV replacement are likely to be of poor quality and thus not utilized correctly. In order to solve these problems, this paper proposes a method to improve videos quality of images using SRGAN(Super Resolution Generative Advisory Networks). Through experiments, we have proven that it is possible to improve low quality CCTV videos clearly. For this experiment, a total of 4 types of CCTV videos were used and 10,000 images were sampled from each type. Those images could then be used for machine learning. The fact that the pre-process for machine learning has been done manually and the long time that required for machine learning seems to be complementary.