• 한국치위생학회지
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• 제9권4호
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• pp.715-725
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• 2009

Objectives : The purpose of this study was to analyze the influence which the professional dental hygiene education has on the knowledge and behavioral change for oral health to the students in the departments of dental hygiene. Methods : 771 students in the first grade and 646 students in the third grade who were attending the departments of dental hygiene from 12 colleges in Korea were surveyed. The self-administered questionnaires were distributed to the students in the colleges during May and asked them to answer the questions and then recovered them on the spot. The collected questionnaires were analyzed by using a SPSS/PC program and the difference of significance depending on the group of the students was tested by Chi-square test or Fisher's exact probability test. Results : In the number of eating snacks by the students during one day, 2-3 times was the highest, irrespectively of the grade. The rate of the students brushing their teeth after snack was higher in the third-grade students(34.8%) than in the first-grade students(20.8%). As the path of acquiring oral health knowledge, all of the first-grade and third-grade students replied that their school classes had impacted them the most. The rate of toothache experience was a higher tendency in third-grade students compared to the first-grade students(p=0.116). The rate of gingival bleeding experience was lower in the third-grade students than in the first-grade students. The rate of oral prophylaxis experience was higher in the third-grade students than in the first-grade students. In the smoking rate, there was lower in the third-grade students than in the first-grade students. The rate of acknowledging smoking hazard to the periodontal health was higher in the third-grade students than in the first-grade students. Conclusions : This study revealed that the third-grade students of dental hygiene departments who were majoring in dental hygiene had a higher perception of oral health than the first-grade students whose the dental hygiene education period was short.

• 한국초등과학교육학회지:초등과학교육
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• 제38권3호
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• pp.360-374
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• 2019

The purpose of this study is to investigate the self-perceptions of the elementary school students' on the affective, behavioral and cognitive domains in science class. To see if there are differences in students' perceptions according to grade levels, a self-perception questionnaire was applied to third and fifth grade students in Seoul, Korea. The major results of the study are as follows. First, the perception level of the affective domain was higher than that of the cognitive domain in third grade students. There was no significant difference in the self-perception level of the fifth grade students. Both third and fifth grade students perceived the greatest improvement in the cognitive domain through one year of science teaching. Second, in the life science class, the same tendency was also observed. The students in the third and fifth grade reported that cognitive domains were the most improved through the one-year life science class. Third, when the students' perceptions were compared by grades, the third grade students showed higher self-perception scores than fifth grade students. As the grade increased, the perception scores of the students' lowered. Based on these findings, implications for science education research and teaching and learning at school are discussed.

• 한국가정과학회지
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• 제7권2호
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• pp.97-113
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• 2004

This study was to investigate the relationship between parent attachment, peer support and behavior problems of middle school students. The subjects were 591 male and female students in the first and third grade of the middle school and their mothers in Busan. The instruments used for this study were Inventory of Parent Attachment Scale, Peer Support Scale and Behavior Checklist for Adolescents. The results were as follows: 1. The first grade students had stronger attachment on father and mother than third grade. The third grade students had perceived peer support more than first grade. Female students had stronger attachment on mother and perceived peer support more than male students. And there was no significant sex difference in attachment on father. In the case of female students, internalizing and externalizing behavior problems increased grade. But, in the case of male students, there was no grade difference in internalizing and externalizing behavior problems. In the case of first grade students, there was no sex difference in internalizing behavior problems. In the case of first grade students, males had more externalizing behavior problems than females. But in the case of third grade students, females had more externalizing behavior problems than males. 2. As parent's education level was higher, students had stronger attachment on parents and perceived more peer support. As family income was higher, students had stronger attachment on father and perceived more peer support. 3. In case of female students, parent attachment and peer support were correlated negatively with internalizing and externalizing behavior problems. In case of male students, attachment on fathers and peer.

• 한국안광학회지
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• 제13권3호
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• pp.13-17
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• 2008

목적: 안경광학의 미래를 전망하기 위함에 있다. 방법: 안경광학과 3년제 1학년, 2학년, 3학년 각각 100명을 대상으로 의식조사를 하였다. 결과: 설문조사 결과, 1. 입학 전 안경광학과에 대한 사전정보 인지도는 1학년 40명(40%)에서 보통으로, 2학년 42명(42%)에서 보통으로, 3학년 34명(34%)에서 낮음으로 조사되었다. 2. 안경광학과 수강과목과 내용 적합도는 1학년 54명(54%)에서 보통으로, 2학년 51명(51%)에서 적당으로, 3학년 47명(47%)에서 적당으로 조사되었다. 3. 안경광학과 선택의 만족도는 1학년 43명(43%)에서 높음으로, 2학년 45명 (45%)에서 보통으로, 3학년 41명(41%)에서 높음으로 조사되었다. 4. 안경광학과 수업의 이해도는 1학년은 55명(55%)에서 보통으로, 2학년은 60명(60%)에서 보통으로, 3학년은 49명(49%)에서 높음으로 조사되었다. 5. 안경광학과 교우 관계의 만족도는 1학년 40명(40%), 2학년 50명(50%), 3학년 51명(51%)에서 높음으로 조사되었다. 6. 안경광학과 선후배 관계의 만족도는 1학년 47명(47%), 2학년 50명(50%), 3학년 41명(41%)에서 보통으로 조사되었다. 7. 안경광학과 미래전망은 1학년 47명(47%), 2학년 50명(50%), 3학년 45명(45%)에서 보통으로 조사되었다. 8. 안경광학과 졸업 후 진로는 1학년 60명(60%), 2학년 68명(68%), 3학년 66명(66%)에서 안경원으로 조사되었다. 결론: 학과 선택의 만족도와 미래전망은 대체적으로 좋은 것으로 조사되었다.

• 한국식품과학회지
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• 제38권1호
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• pp.10-15
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• 2006

$1^+$등급과 3등급의 우육안심을 함기포장한 후 $1^{\circ}C$에서 저장하면서 이화학적, 미생물학적 품질변화를 측정하였다. 조지방의 경우 $1^+$등급 우육이 3등급 우육에 비해 높은 지방함유율을 나타내었고, 냉장중 조지방의 변화는 저장초기부터 저장 21일째까지 뚜렷한 변화는 관찰되지 않았다. 수분함량의 경우 $1^+$등급 우육이 3등급 우육에 비해 낮게 나타났으며 $1^+$등급과 3등급 우육의 저장기간 동안 수분 함량은 뚜렷한 변화를 나타내지 않았다. $1^+$등급 우육의 총균수는 저장 21일째 약 $10^6\;CFU/cm^2$ 이하를 나타낸 반면 3등급 우육은 $10^8\;CFU/cm^2$을 나타내었다. 휘발성 염기태 질소 함량(VBN)은 저장기간 동안 $1^+$등급 우육에 비해 3등급 우육이 높게 나타났다. drip 발생량은 저장 14일째 $1^+$등급, 3등급 우육 각각 4.19%와 6.06%로 3등급 우육의 drip량이 현저히 높게 나타났다. a 값과 b값은 저장 전기간 동안 $1^+$등급 우육이 3등급 우육에 비해 높은 값을 나타내었고, b 값은 저장 21일째까지 b 값은 저장기간이 경과할수록 낮아지는 경향을 나타내었으나 저장 28일째의 $1^+$등급 우육과 3등급 우육은 각각 3.83, 2.60의 b 값 을 나타내어 저장 초기의 4.42, 3.22보다는 b 값이 감소하였으나 유의적인 차이(p<0.05)는 관찰되지 않았다.

• 한국과학교육학회지
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• 제27권6호
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• pp.465-476
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• 2007

Whether and when naturalistic or supernaturalistic explanations of the origins of sun and earth, humans, life and species change with development was explored in a questionnaire and interviews with 32 first graders and 32 second graders, and in a questionnaire with 34 third graders, 32 sixth graders and 38 eighth graders. Participants were also asked about factors affecting their explanations in the questionnaires. Even the first and second graders could consistently provide supernaturalistic or naturalistic explanations on both the origins of sun and earth, and of humans. There was an age-related developmental shift from supernaturalistic to naturalistic explanation. As for origins of species, most of the first and second graders held the spontaneous generationist explanation, and after the third grade their views divided into evolutionist and creationist explanations. Students' explanations of species origins were established by the sixth grade through a transitional stage in the third grade. At the first and second grade levels, books and the children's own reasoning mainly influenced the views of origins, whereas parents and school were not perceived as being important. For the third graders and higher-grade levels, several factors, including parents and religion, were perceived as being important. These results show that explanations of origins start to develop earlier than or during the first grade, and are established by the sixth grade; moreover, the formation of these views is affected by several factors in addition to development.

• 한국초등과학교육학회지:초등과학교육
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• 제37권1호
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• pp.1-11
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• 2018

Factors and causal structures of pre-service elementary teachers about the critical thinking and the scientific literacy competency were investigated in this study. The third grade university students and the first grade university students in the metropolitan city participated in this study. The factor analysis method and the structural equation modeling method were used for the data analysis, and the following results were obtained. First, the third grade university students and the first grade university students recognized 'inquisitive thinking' factor and 'reflective thinking' factor as factors of the critical thinking, and 'scientific explanation' factor and 'evidence-based conclusion' factor as factors of the scientific literacy competency respectively. Second, the third grade university students showed more the influence from 'reflective thinking' factor to 'scientific explanation' factor and from 'reflective thinking' factor to 'evidence-based conclusion' factor than the first grade university students.

• Human Ecology Research
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• 제54권5호
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• pp.475-485
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• 2016

This study explored mothers' and grandmothers' perception regarding child rearing practices as overprotective behaviors for first to third grade levels of elementary school. The study was conducted on 202 mothers and grandmothers of first to third grade elementary school students. Questionnaires were made with 40 questions on overprotection behaviors selected from the existing questions for preschooler, high grade elementary students, and youth. The questionnaires were distributed to target subjects to answer how they would perceive when each of question is applied to their lower grade elementary students. Based on the collected responses and the factor analysis, it was found out that the overprotective behaviors were classified into four factors such as "reduction in independence," "over-sensitiveness to safety," "interference in daily life," and "health anxiety." There were significant differences in the perception of the overprotective behavior by the subjects depending on the generations, features of children and mothers. This study focused on the lower grade elementary school students who have been removed from studies due to the lack of intervention measures. It has the implication in that the findings of the study can give the basic data for the development of the scale on overprotective behaviors in lower grade elementary school students.

• Journal of Korean Neurosurgical Society
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• 제40권1호
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• pp.40-43
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• 2006

Chordoid glioma is an uncommon low-grade tumor of the third ventricle with histologic features of a chordoma and immunolabeling for glial fibrillary acid protein. We present a rare case of a patient with a chordoid glioma of the third ventricle and review the literature regarding this tumor's clinical, radiological and pathologic aspects.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제17권2호
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• pp.99-118
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• 2013

The present study focuses on the contribution of a teaching unit to the development of spatial ability of third graders in general and from a gender point of view in particular. The research population consisted of seventy-four pupils: thirty-seven pupils in the experimental group who attended the teaching unit and thirty-seven pupils in the control group. The spatial ability of all the pupils was examined by means of common tests which checked cognitive capabilities of spatial ability. The research findings illustrate an improvement in the spatial ability of the experimental group pupils following the participation in the teaching unit. Moreover, regarding the gender aspect, the findings show that there was no significant differentiation between the spatial ability of third grade boys and the spatial ability of girls of the same age group.