• 보건교육건강증진학회지
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• 제16권2호
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• pp.55-66
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• 1999

To evaluate the status of the contact to lascivious computer programs and sexual attitude and behaviour by the grades of middle school boy students, the questionnaire survey was done on 715 students of five middle schools in Pusan and Kimhae area from December 15 to December 24, 1997. The data were analyzed by PC SAS; $X^2$ -test. The level of significance was 0.05. 404 students (56.5%) had a personal computer in their home. 516 students(72.2%) have experienced of using a computer program. 294(57%) of them usually played a game with computer. 514 students(71.9%) had experiences of the contact to a lascivious computer program, which increased with the grades of the students(p〈0.05). The first exposure to a lascivious program was when they were elementary school students in 24.6% of first grade middle school student, 13.8% of second grade, and 11.3% of 3rd grade students. 92% of the students was introduced to first contact through their friends. 63.7% of them watch the program at their friends home. The most common drives to contact to a lascivious programs were curiosity (53%). Sexual desire was a higher drive in third grade students (20.6%) than lower grades. After contacting to a computer lascivious program, desire of masterbation was more frequent in lower grade students. and feeling disgust was more frequent in higher grade students (p〈0.05). Frequence of masterbation or sexual intercourse was higher in high grade students(p〈0.05) In conclusion, distribution and popular use of computer attributes to the increased exposure to lascivious programs and lowering the age of first exposure. There was the difference according to the grades in the feeling and sexual behaviour after contacting to computer lascivious program. Appropriate methods to protect young students to contact a lascivious program should be sought. The use of computer should be educated in elementary school students accompanied by proper sex education.

• 지질공학
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• 제5권2호
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• pp.167-179
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• 1995

서울 지하철 8호선 설계시는 지보형식 설정을 위한 정량적 기준으로 RQD,N치 및 탄성계수의 3가지 요소들만이 사용되었다. 이러한 요소들로 얻어진 지보형식은 지질이나 불연속면의 방향성, 불연속면의 특성을 정량화 하지 못하였기 때문에 지보형식의 결정 및 안정성에 문제가 있었다. 따라서 보다 많은 정량적인 요소들을 포함시키고 경제적인 지보형식을 결정하기 위해 8호선 성남구간을 선택하여 총 1745개소에서 RMR에 의한 암반분류와 374개소에서 Q-system에 의한 암반분류를 실시 하였으며, 이들에 의해 구해진 지보형식과 8호선 설계시의 표준지보형식을 비교검토하였으며, 또한 지질, 지질구조 및 지형에 따른 암반평점과의 관계를 검토하였다. 지보형식을 비교 검토한 결과 PD-4혹은 PS-4로 설계된 표준지보형식은 4-6개의 지보형식으로 세분되어져야 하며 암반평점은 단층 및 절리와 같은 지질구조가 발달된 곳과 계곡부가 대체로 암반평점이 낮고 굴착심도가 깊은 산악지역은 높으며 상록구간은 이들의 중간정도의 양상을 보인다.

• 한국수산과학회지
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• 제52권3호
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• pp.199-208
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• 2019

The present study compared the sensory and physicochemical characterizations of Alaska pollock Theragra chalcogramma roe according to the L, M, S, 2S, KA, KB, KC, and G grades. The mean weights of the Alaska pollock roe were 81.2 g (74.1-85.7 g) in the L grade, 48.4 g (41.1-54.8 g) in the M grade, 38.6 g (33.5-45.6 g) in the S grade, 29.3 g (25.7-34.2 g) in the 2S grade, 45.7 g (41.4-50.0 g) in the KA grade, 41.4 g (37.7-46.1 g) in the KB grade, 38.3 g (36.0-42.6 g) in the KC grade, and 15.0 g (14.2-15.6 g) in the G grade. The results of the sensory (transparency, physical damage, texture, and odor) and physicochemical (moisture, amino nitrogen and volatile basic nitrogen contents, Hunter redness, and texture) evaluations revealed that, in the normal group, the quality of Alaska pollock roe was highest in the L grade followed by the M, S, and 2S grades whereas, in the cut-group order, the quality was highest in the KA grade followed by the KB, KC, and G grades. The present results suggest that the L, M, S, 2S, KA, and KB grades could be used for high-quality Alaska pollock roe products.

• 보건교육건강증진학회지
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• 제17권2호
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• pp.17-33
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• 2000

The aim of this study is having the status, knowledge and attitude of the high school attendees toward smoking be analyzed, helping to make effective health education methods to diminish adolescent smoking habits. The field self-questionnaire investigation has been performed from Oct 10th through 23rd in 1999. The whole 427 cases were distributed to 1st and 2nd grade students of randomly selected men's high school in Seoul. And 414 cases (97%) were finally selected for analysis after exclusion of cases with insufficient information. The main contents of questionnaire are composed of several sectors; the general characteristics of the interviewees, the relationship with parents, the life style and the peer relationship in school. And smoking-related characteristics are taken into consideration, too. The major findings of the study are as follows: The smoking/non-smoking related factors are, in socio-demographical terms, the grade, average spending per month of the interviewees. And the degree of satisfactory relationship with parents is significant on smoking behavior. The higher, the degree of satisfaction on school life and relationship with designated teacher, the more chances of non-smoking habit. Poor academic grades and peer group dependability of interviewees cause higher smoking habit rate in other way. The self-interviewees grade and cohabitation with parents are also significant on both the attitude toward smoking habit and the knowledge on smoking statistically. The academic history and vocations of the parents and the academic grades of interviewees are also effective variables, but don't make any gap between groups knowledge on smoking. Smoking groups used to have positive attitude toward smoking habit. Both the attitude and knowledge on smoking by the consideration of Quit-smoking have statistically significance. The groups which have negative attitude and high knowledge on smoking quit-smoking into consideration. And the primary cause of quit-smoking is on health by smoking. Depression, stress, adult smoking in the house, peer group pressure, cigarettes advertisements on papers and magazines and smoking scenes on TV have positive correlation on forming smoking habit (p〈0.001) But the knowledge on diseases triggered by smoking has negative correlation on forming smoking habit. (p〈0.05, p〈0.001). Social factors as monthly spending, relationship and communication with parents, the degree of satisfaction in school life, academic grades and student-teacher relationship have crucial negative correlation on smoking habit. That is to say, the higher, the monthly spending is, the worse, the relationship with parents and teachers is, the lower, the academic grades of the student is, the percentage of the interviewees who have smoking habit seems to get higher.

• 한국실내디자인학회논문집
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• 제16권5호
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• pp.89-97
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• 2007

This study compares, analyzes and reevaluates color conditions and images before and after the execution of the 7th curriculum with elementary schools in Gwang-ju Metropolitan City based on the fact that color among physical environments of elementary classrooms has an important influence on children's emotion and draws problems and aims to accumulate the basic materials for preparing guidelines of improving color environment at general classrooms of elementary schools. Consequently, according to color conditions, major colors on ceiling and wall were high brightness/nigh chroma of Y and YR line regardless of division of grades and other color factors of classroom showed that wall and ceiling used similar colors, but brightness was higher after change than before it. In evaluation of color images, lower grades showed negative color images such as 'common,' 'rustic,' and 'strange' before change, but they showed positive color images after change such as 'clean,' 'unique,' and 'soft'. But, most of higher grades showed negative reactions before change such as 'common,' 'strange,' and 'rustic' and they showed positive reactions after change only in such items as 'clean,' 'warm,' and 'unique', but Indicated negative reactions in remaining items such as 'strange,' 'rustic,' 'stiff,' and 'artificial'. Accordingly, in using colors for lower grade classroom, arrangement of colors through adjustment of brightness and chroma between ceiling, wall and other components based on coloring of high brightness and low chroma of similar colors should be considered and for higher grade classroom, arrangement of colors of unique images of mid-brightness/mid-chroma among warm color lines of similar colors should be examined.

• 한국학교보건학회지
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• 제29권1호
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• pp.11-21
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• 2016

Purpose: The purposes of this study were to check the obesity of middle and high school students in the nation and identify factors influencing their obesity. Methods: The present study is a secondary analysis research that obtained permission to use the primitive data of 10th (2014) Online Survey on Adolescents' Health Behaviors by the Korea Centers for Disease Control and Prevention and analyzed the primitive data according to the purposes. Results: The findings show that the BMI of middle and high school students in the nation was $20.7kg/m^2$ with the obesity and non-obesity group recording $27.0kg/m^2$ and $19.9kg/m^2$, respectively. Factors influencing the obesity of adolescents include gender, grade, educational background of parent, school grades for the last 12 months, satisfaction with sleep, fast food consumption, ramen consumption, intense and muscle exercise three times a week or more, subjective sense of health, stress, suicidal ideation, and hours of Internet usage per week. Conclusion: For the management of adolescent obesity, there is a need for obesity management programs taking the characteristics of male students into consideration. The possibilities of obesity grow according to the grades, which means that both the teachers and parents should offer more guidance on weight control in upper grades. The adjustment of adolescent obesity requires psychological health management including stress and suicidal ideation as well as diet control and exercise. It is also needed to apply a stepwise obesity management program according to the hours of internet usage and dependence on the internet

• 한국분말야금학회:학술대회논문집
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• 한국분말야금학회 2006년도 Extended Abstracts of 2006 POWDER METALLURGY World Congress Part 1
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• pp.652-653
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• 2006

This paper introduces a special spheroidizing technology at ultra-high temperature. The conventional cast tungsten carbide (YZ) is melted at high temperature, rapidly cooled and spheroidized on a new ultra-high temperature spheroidizing equipment to prepare various grades WSC powders.

• 타이어
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• 통권90호
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• pp.13-21
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• 1980

Radial 타이어의 타이어 품질등급제 (UTQGS: Uniform Tire Quality Grading Standard)가 80년 4월1일 발효되었다. 다음 일람표는 미국운수성(DOT) 국유 High Way 교통안전국(NHTSA)에 80년 4월1일까지 등록된 각 타이어 메이커 및 자가 Brand 품(Private Brand)업자로부터 제출된 등급표시이다. Grades 표시내용에 대해서는 지난 5~6월호에 주석해 놓았으므로 참조바랍니다.<편집자주>

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2011년도 춘계학술대회 논문집
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• pp.1125-1126
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• 2011

• 과학교육연구지
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• 제36권2호
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• pp.303-312
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• 2012

본 연구는 과학 고등학교 학생들의 실험 보고서 작성에 대한 인식과 실험 보고서 작성이 과학 개념 이해와 과학 탐구 능력에 미치는 영향 등에 대한 학년별 인식을 조사하고자 하였다. 이를 위해 서울과 경기에 위치하고 있는 과학 고등학교 4곳에서 260명의 학생이 조사에 참여하였다. 과학 고등학교 학생들은 실험 보고서를 작성하는 것에 그다지 긍정적이지 않았으나 실험 보고서를 작성하는 것이 과학 개념 이해와 과학 탐구 능력 향상에는 도움을 준다고 생각하는 것으로 나타났다. 이러한 경향은 학년에 따라서 많은 차이를 나타내었다. 과학 고등학교 1학년 학생들이 2학년에 비해 실험 보고서 작성, 과학 탐구 능력 향상, 과학 개념 이해 등 모든 영역에 대해 훨씬 더 긍정적인 견해를 나타내었다. 이는 과학 고등학교 학생들의 실험 보고서 작성에 있어 학년에 따라 교육적 접근이 달라져야 함을 나타낸다.