• Transactions of the Korean Society of Mechanical Engineers A
• /
• v.25 no.10
• /
• pp.1636-1643
• /
• 2001

Automobile maneuverability and tire durability are significantly influenced by the sidewall tire contour. In order to improve these tire performances, it is very important far one to determine a sidewall contour producing the ideal tension and strain-energy distributions. However, these requirements can nut be simultaneously achieved by conventional non-interactive multi-objective optimization methods based on mathematical programming, because these exhibit the conflicting behavior each other, with respect lo the sidewall contour. Therefore, we execute the tire contour optimization fur improving the maneuverability and the tire durability using satisficing trade-off method.

• Culinary science and hospitality research
• /
• v.17 no.2
• /
• pp.126-139
• /
• 2011

This study was conducted on the 4 year university students majoring in the culinary practice to survey the recognition levels of the culinary practice education with the purpose of searching for a development plan of the culinary education. The recognition levels of the culinary practice education according to the types of sex, grade and alma mater are as follows. The interest and necessity of the culinary practice education was very high while the performance degree of the culinary practice education was felt insufficient. For the efficient culinary practice education, they recognized that theoretical education and practice demonstrations are required and hoped to focus on hotel cooking and certified technician cooking. In addition, they hoped to be provided with a place for teacher's detailed practice demonstrations and supplementary practice. According to the variables, positive responses were given from male students, high grade students and vocational school students. In conclusion, if chances are given to display achievement desire self-directly through increasing practical training, development and application of various programs, operation of open practice classes and culinary organization reflecting social changes in the education courses, the culinary practice education is considered to be more vitalized.

• Journal of Korean Library and Information Science Society
• /
• v.46 no.1
• /
• pp.43-63
• /
• 2015

Quality of the library service, because it is based on the subjective meaning of the user for a particular service, depending on the individual expectation level, can be divided between satisfaction and dissatisfaction. Therefore, library services that are performed in public libraries also ultimately assessment of library services may influence based on the expected value of the user. This study is a satisfaction survey of library services to the public library of Goyang. Overall satisfaction of Public Library of Goyang in this study are in the following orders: 1) facility, 2) cultural programs and courses, 3) librarian kindness, 4) collections. To understand the specific meaning of each preference, it was analyzed in the followings: 1) the expectation level to the library space, 2) expectation level to librarians, 3) new service the users desire, 4) service the users want, etc. by age and occupation. As the age of the user increases, the demand for traditional library usage increased. In addition, services that utilize the same library external resources and utilization of external lecturer is like finding employment and art courses, expectation level of users such as reading course to utilize library resources was the highest.

• Journal of KSNVE
• /
• v.4 no.4
• /
• pp.397-403
• /
• 1994

본 고에서 제시한 타이어 소음발생기구에 대한 수학적 모델은 실제활용을 목적으로 정립된 것이다. 이 모델은 프로그램화 되어 타이어 패턴 소음 예측을 위한 컴퓨터 시뮬레이션에 활용되었다. 시뮬레이션에서는 전체 소음도 뿐만아니라 스펙 트럼 특성까지도 예측할 수 있으며, 몇가지 실추결과와 비교하여 만족스러운 수준 의 일치를 확인하였다. 이 기술의 장점은 저소음 타이어 개발에 따르는 시간과 돈을 크게 절약할 수 있다는 것이다. 즉 타이어 설계자가 구상하고 있는 패턴을 컴퓨터에 입력함으로서 타이어의 기본기능을 손상하지 않는 범위에서 최선의 소음특성을 갖는 패턴을 결정할 수 있다. 선진 타이어 업체들은 이미 이같은 방법을 사용하고 있는 것으로 알려져 있으며, 이제 우리도 그 수준에 도달했다고 자부할 수 있다. 그러나 모든 과학기술 이론이 그러하듯이 이 글에서 제시한 모델 역시 결코 완벽하다고 볼 수는 없다. 이 글의 내용이 국내 관심있는 학자들에게 시작할 수 있는 계기가 될 것을 기대하며, 국산 자동차의 저소음화 노력이 더욱 활성화 되기를 희망한다.

• Journal of Korean Society of Transportation
• /
• v.18 no.3
• /
• pp.101-112
• /
• 2000

The Purpose of this Paper was to revise the method of USHCM and to establish new method for level of service analysis on two-lane rural highways. For this Purpose, total delay rate was selected as new MOE for level of service, replacing the present Percent time delay. This result showed that total delay rate was more effective for considering the effects of traffic flows, auxiliary lane, and vertical tirade. The application of total delay rate could resolve the Problems in the USHCM method, such as too wide ranges for level of service D and E, and the use of different Procedures for level of service analysis of general terrain segment and specific grade Procedures. The research results are as follows First, a new method for level of service analysis on two-lane rural highways was developed using the total delay rate. Second, a new classification for level of service was developed and a consistent method applicable for general terrain segment and specific tirade Procedures was developed. Third, the desired speed on two-lane rural highways was determined as 85km/h.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.15 no.8
• /
• pp.5031-5041
• /
• 2014

Purpose: The influence of the hoping number of children, the policy of childbirth, and the causes of reduced childbirth to the perception of childbirth, which will be the subject of future childbirth, was surveyed by health-line college students. Results: In terms of the attitude to the perception of childbirth, the quality of personal life, childcare, insufficient support of childbirth, and breeding of descendants had the largest influence on childbirth, and in terms of the attitude to the hoping number of children, economic reasons, childcare expenses, and education expenses had the largest influences. Second, when the causes of social demographic properties influencing childbirth was analyzed, sex showed significance to all the factors on the hoping number of children in terms of growing areas, to all the factors excluding childbirth policy in terms of the economic level, and hoping number of children in terms of the parents' jobs. Third, when the correlation was analyzed, a correlation was found in every area excluding the hoping number of children in terms of the causes of childbirth reduction and economy, childbirth policy in terms of the personal causes, personal factor in terms of the causes of childbirth policy, and family factor in terms of the causes of childbirth reduction and economy. Fourth, when the influences of the causes of hoping number of children, childbirth policy, and childbirth reduction to perception of childbirth were analyzed, the case hoping no or one child, the case hoping 2 or more children, childbirth policy, and childbirth reduction had a positive significant influence on the perception of childbirth. Conclusion: The childbirth rate will be improved if the following occur: childbirth policy and laws are established at the level of government, education programs are developed and operated for the formation of the value of perception of childbirth, and a new support policy is established after analyzing the current childbirth support policies. To change the perception of childbirth in college students who are future subjects of childbirth, successive studies will be needed to verify the effect of aforesaid measures.

• Journal of Gifted/Talented Education
• /
• v.26 no.2
• /
• pp.405-421
• /
• 2016

The purpose of this study was to investigate students' perception of Advanced Placement Program. Participations of this study were 1144 students from 14 science high schools. The results showed as follows. First, students perceived positively regarding AP program and were willing to take AP courses because of interesting and challenging in academic area which is provided by AP courses. Secondly, many students would like to take AP courses in Differential and Integral Calculus 1, General Physics I, General Chemistry I and General Biology. Also, they would like to take AP courses in first term as a mandatory subjects. Third, responses perceived that AP courses were challenging, difficult, and of high quality. Finally, students perceived the benefit of AP courses in earing college credit. However, 35% of responses wished to receive an exemption for all AP courses. Also, they wished to have dual-major or participate in students exchange program as a benefit of AP program. Implications of the study were discussed in depth based on the results.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.16 no.8
• /
• pp.5152-5159
• /
• 2015

This descriptive correlational study was to intended to analyze the relationship among emotional intelligence, academic self-efficacy and career decision level in high school girls. Data were collected from 241 high school girls in B and C city and analyzed using SPSS 20.0. The results are as follows: First, the mean score of emotional intelligence, academic self-efficacy and career decision level were above moderate. The levels of score were significant differences according to grade, school record, economic status, hoping career, and peer relationship. There were positive correlations among emotional intelligence, academic self-efficacy and career decision level. Therefore, it is necessary to consider emotional intelligence and academic self-efficacy for improving career decision level of high school girls.

• Journal of dental hygiene science
• /
• v.6 no.1
• /
• pp.11-17
• /
• 2006

The purpose of this study was to help prevent the turnover of competent dental hygienists in a bid to boost the efficiency of personnel management for dental health care workers and provide higher-quality oral health services. After relevant literature and data were reviewed, a survey was conducted on dental hygienists, who worked at dental institutes, for approximately four months from September to December 2004 to identify what affected their turnover. The findings of the study were as below: 1. Regarding turnover experience, 39.7 percent of the dental hygienists investigated had such an experience. As to turnover frequency, those who took up another employment once made up the largest group(28.2%), followed by twice(8.0%) and three times(2.9%). The most dominant turnover reason was working conditions(66.7%), followed by seeking being hired by larger institutes(36.2%), pay(21.7%), relationship with dentists(11.6%) and commuting distance(11.6%). 2. As for their hope for turnover, 82.8 percent hoped to take up another employment, and working conditions were cited as the most common reason(44.4%), followed by pay(33.3%), commuting distance(18.1%), marriage(13.2%), health/use of leisure time(11.8%), and commuting time(10.4%). 3. Concerning preference for future workplace, 38.5 percent, the largest group, wanted to work at public health clinics. As to a preferred term of working as dental hygienists, 50.0 percent, the greatest group, hoped to serve as dental hygienists until they are financially secure. 34.5 percent, the second largest group, intended to keep working until they reach the age limit. In regard to their responsibility for family economy, 47.7 percent, the greatest percentage, shouldered the partial responsibility for that, and 31.6 percent assumed no responsibility. 4. As to their intention to quit working as dental hygienists, 61.5 percent were willing to do that, and marriage(29.0%) was singled out as the most frequent reason, followed by working conditions(27.1%), child birth(22.4%), health/housework(18.7%), pay(15.9%) and learning/use of free time(15.0%).

• Korean Journal of Childcare and Education
• /
• v.6 no.1
• /
• pp.1-21
• /
• 2010

This study examined Korean immigrant elderly's generativity and care-giving experiences of their grandchildren according to their level of generativity. In-depth interview and participant observation method were used. First, this study used Loyola Generativity Scale in order to find Korean immigrant elderly's generativity level. 4 grandparents were selected as a group of low generativity level and 4 grandparents as high level. Grandparents with low generativity level showed non-voluntary care-giving, severe care-giving stress, guilty feeling for their adult children and shame for their ancestors, anxiety for the unstable future, lack of self-care, and lack of social assistance. Grandparents with high generativity level showed voluntary care-giving, positive reaction for the reversed parental care, feeling of usefulness for care-giving, hope for the future, existence of self-care, and existence of social assistance. Further discussion and suggestions were made from the study results.