• 한국초등과학교육학회지:초등과학교육
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• 제31권4호
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• pp.413-423
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• 2012

The purpose of this study was to identify the effectiveness of science writing on organizing scientific knowledge and improving science process skills and science attitude, as science educators have indicated. For this study, two classes of $5^{th}$ grade students were chosen in the same elementary school. Subjects were divided into an experimental and a control group. The students in the experimental group took part in a science writing program for 14 lessons of science classes. The students in the control group were taught according to the traditional science program using standard science textbooks. To identify the effects of science writing, both groups' students were tested on science achievement, science process skills, and science attitude before the program implementation and were tested on science concept, science process skills, science attitude after the program implementation. The results of this study showed that the experimental group gains significantly higher scores than the control group in science concept and science attitude, but there was no significant difference on science process skills for either group. In conclusion, science writing had positive effects on science concept and science attitude of elementary school students, helping them to express their thinking logically and systematically, but science process skills were not affected.

• Asian Pacific Journal of Cancer Prevention
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• 제17권sup2호
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• pp.1-5
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• 2016

To reduce tobacco use and related harm in Korea, telephone based cessation services (Quitlines) began full operation to provide regular behavioral counseling for smoking cessation in 2006. After registration in the cessation program, at least 21 calls per year are given to each client to help quit and encourage maintenance. Tailored programs for males, females, and adolescent smokers have been offered taking into account smokers' characteristics and smoking behavior. Mailing self-help quit packs and e-mail and SMS services are allowable as additional services.A total of 23,201 smokers were registered on the Quitline program from 2006 to 2014. In 2014, an average of 13,343 calls per month have been received by 28 coaches, the 1 year abstinence rate of clients is 26%, and clients' satisfaction rate is 81.6%. After introduction of the call system in 2007, client convenience and effective operations have been achieved with high technology support of a computer-based telephone system. Systematic education and evaluation programs for quit coaches have contributed to quality assurance of the services. Currently, research into development of new programs and evaluation of Quitline performance is being undertaken. A Comprehensive Multi-channel Cessation Center (CMCC) has been suggested and is now planned as a next step in the national program for smoking cessation.

• Asian-Australasian Journal of Animal Sciences
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• 제25권7호
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• pp.950-955
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• 2012

This study was conducted to determine how the isolation method of the porcine preantral follicles influenced the following follicular growth in vitro. Mechanical and enzymatical isolations were used for retrieving the follicles from prepubertal porcine ovaries, and in vitro-growth of the follicles and the expression of folliculogenesis-related genes were subsequently monitored. The enzymatic retrieval with collagenase treatment returned more follicles than the mechanical retrieval, while the percentage of morphologically normal follicles was higher with mechanical retrieval than with enzymatic retrieval. After 4 days of culture, mechanically retrieved, preantral follicles yielded more follicles with normal morphology than enzymatically retrieved follicles, which resulted in improved follicular growth. The mRNA expression of FSHR, LHR Cx43, DNMT1 and FGFR2 genes was significantly higher after culture of the follicles retrieved mechanically. These results suggest that mechanical isolation is a better method of isolating porcine preantral follicles that will develop into competent oocytes in in vitro culture.

• 수산해양교육연구
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• 제28권5호
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• pp.1183-1197
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• 2016

The purpose of this study is to develop a Puzzle-Based Computer Science Instruction Model and Learning Program and to confirm the effects. To do so, we selected 2 classes with a similar level of pre-computational thinking in elementary schools in the Jeju Province. After that, from 2 classes, we designated the 5th grade students in 'D' elementary school as group A and designated students of the same grade in 'J' elementary school as group B. In a total of 28 sessions during an 18 week period, a Puzzle-Based Computer Science Learning Program was used with 31 students in group A, and the traditional computer science course was used with 25 students in group B. The results showed that there were significant improvements in computational thinking, which is computational cognition and its creativity, of the students in group A compared to students in group B. Also, this study proved that the Puzzle-Based program correlated with positive changes group A students' Science-Related Affective Domain. In this paper, on the basis of proven effectiveness, we introduce the Puzzle-Based Computer Science Instruction Model and Learning Program as an alternative to traditional, computer science education.

• 과학교육연구지
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• 제34권2호
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• pp.327-341
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• 2010

이 연구는 과학고등학교 학생들이 과학자들과 함께 하는 녹색탐사활동에 참여하기 전과 참여하고 난 후에 과학자와 과학자가 일하는 곳에 대한 인식을 알아보고, 활동이 학생들의 인식에 영향을 미칠 가능성에 대해 알아보고자 수행되었다. 변형된 DAST를 이용하여 과학고등학교 1학년 64명의 학생들을 대상으로 활동에 참여하기 전과 후에 과학자의 이미지와 일하는 곳에 대해 조사하였다. 참여자들은 과학자에 대해 실험복을 입은 20-30대 남성이 시험관, 플라스크, 기계들을 있는 실험실에서 혼자 연구하는 전형적인 이미지를 가지고 있는 것으로 나타났다. 과학자의 전형적인 이미지를 나타내는 항목들과 하는 일에 대해서는 활동 전(M=1.69, SD=1.14)과 활동 후(M=1.96, SD=1.24, t=4.43, p<0.001)에 유의한 수준에서 차이를 보여 과학자와의 활동이 과학자와 그들이 하는 일에 대한 인식의 변화에 영향을 미칠 가능성이 있음을 시사한다고 볼 수 있다. 따라서 학생들이 과학자들과 함께하는 녹색탐사활동을 지속적으로 계발시키고 보급시킬 필요가 있다.

• 치위생과학회지
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• 제12권2호
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• pp.139-144
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• 2012

본 연구는 2007년부터 시작된 대전 양치교실사업의 효과를 평가하고자 양치교실 실험군 59명과 대조군 60명을 대상으로 하여 2011년 6월- 9월까지 구강검사와 COHIP를 비롯한 설문조사를 실시하였다. 두 군 간의 경제적 상태와 주관적인 건강인식에 차이를 보여 이들 변수를 통제한 후 자료를 분석한 연구 결과는 다음과 같다. 1. 양치교실이 있는 실험군은 대조군과 비교하여 우식경험영구치수, 우식경험영구치면수 모두에서 유의한 차이가 없었다. 2. 양치교실이 있는 실험군은 대조군과 비교하여 치면세균막지수는 유의하게 낮았다(p<0.05). 3. 양치교실이 있는 실험군은 대조군과 비교하여 아동구강건강관련 삶의 질이 유의하게 양호하였다(p<0.01). 4. 양치교실이 있는 실험군은 대조군과 비교하여 불소와 치아홈메우기 사업에 관한 지식이 유의하게 높았다(p<0.01). 5. 양치교실이 있는 실험군은 대조군과 비교하여 구강보건행위면에서 유의한 차이를 보이지는 않았다. 6. 대조군이 양치교실이 있는 실험군과 비교하여 학교집단잇솔질사업에 관한 긍정적인 태도를 보였다(p<0.05) 따라서, 초등학교 양치교실사업은 치면세균막지수 감소효과와 구강건강 관련 삶의 질 증진효과를 가지고 있으나 치아우식경험도를 감소시키기 위해서는 부가적인 치아우식예방법이 요구되며 양치교실 운영시 양치교실이 효율적으로 이용될 수 있도록 운영방안과 학생들의 동기를 유발할 수 있는 프로그램 개발이 필요하다고 사료되었다.

• 대한지구과학교육학회지
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• 제13권1호
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• pp.15-28
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• 2020

이 연구의 목적은 중학교 '태양계 단원에서 비유를 활용한 HTE(Here, There, Everywhere) STEAM 프로그램을 개발하고, 이 프로그램을 세종시 소재 A중학교와 평택시 소재 B중학교의 1학년 중학생 354명에게 적용하여 프로그램의 효과성을 검증하는 과정을 통해 지능정보사회를 대비한 창의교육을 실현하는데 있다. 개발한 STEAM 프로그램은 전문가 집단을 구성하여 3차례에 걸쳐 수정, 보완하여 타당성을 검증받았으며, 최종 개발된 프로그램은 총 6차시에 걸쳐 현장에 적용하였다. 이에 따른 효과성을 알아보기 위해 논리적 사고력 검사와 STEAM 관련 태도 검사를 프로그램 처치 전과 처치 후에 실시하였으며, 프로그램에 대한 학생들의 인식을 알아보기 위해 프로그램 처치 후 STEAM 만족도 검사를 실시하였다. 이 연구의 결과는 다음과 같다. 첫째, 비유를 활용한 STEAM 프로그램이 중학생의 논리적 사고력 향상에 효과적인 것으로 나타났다. 둘째, 비유를 활용한 STEAM 프로그램이 중학생의 STEAM 태도 향상에 효과적이었다. 셋째, 비유를 활용한 STEAM 프로그램에 대한 중학생의 인식이 긍정적이며, 과학에 대한 흥미를 일으키는데 효과적이었다. 이러한 결과를 통해 차기 수업에서는 충분한 시간을 통해 STEAM 프로그램 수업을 수행한다면 중학생들의 수업에 대한 만족도가 더욱 높아질 것으로 사료된다.

• 한국수정란이식학회지
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• 제26권4호
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• pp.271-276
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• 2011

This study was focused on improvement of milk production in Mongolian dairy industry by artificial insemination (AI) technology, supported by ODA of KOICA in Republic of Korea. This program was started in January 2009 and it is in $3^{rd}$ years. This manuscript summarized the data especially on estrus synchronization and pregnancy establishment in dairy cows (Holstein) this year. A total of 81 dairy cows from 4 private farms (38 from Undarmal milk and that of 30, 8 and 5 dairy cows from Onjin (Enkhbayer), Jargalant, and BRM School farms respectively) were synchronized with 5 ml Lutalyse (i.m.) in the dump of dairy cows and then estrus was detected 2 to 3 days after $PGF_{2{\alpha}}$ injection. The synchronized dairy cows were inseminated with 0.5 ml dairy frozen semen by conventional artificial insemination (AI) techniques. Pregnancy was diagnosed about 60 days after AI by palpation method. About 96.3% (78/81) of synchronized cows were responded to single $PGF_{2{\alpha}}$ injection. Total 75 over 78 dairy cows (90.1%) inseminated were diagnosed as pregnant. The estrus induction and pregnancy rates were very effective using Lutalyse injection and conventional AI techniques in Mongolian dairy cow. The present results indicated that AI after estrus induction in Mongolian dairy cows could be applied to dairy breeding technology for improving breeding efficiency and milk production of the country.

• Child Health Nursing Research
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• 제26권2호
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• pp.154-163
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• 2020

Purpose: The purpose of this study was to investigate the effects of a positive psychology-based mental health promotion program for high school students. Methods: This study used a randomized control group pretest-posttest design. A total of 47 high school students participated from two high schools in Gyeonggi Province. They were randomly assigned to an experimental group (n=24), which participated in the 8-session program, or to a control group (n=23). Psychological well-being, depression, and self-esteem were measured. Results: A significant difference in psychological well-being was observed between the two groups after the program. However, there were no significant between-group differences in depression or self-esteem. Conclusion: The positive psychology-based mental program was effective at increasing psychological well-being in adolescents, especially high school students. This study suggests that a school curriculum could incorporate positive psychology-based mental programs for high school students to promote their mental health.

• Physical Therapy Rehabilitation Science
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• 제12권1호
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• pp.33-42
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• 2023

Objective: This study aims to analyze the effect of regular exercise through the combined walking-oriented aerobic and resistance exercises using EX1 in young adults. Design: Experimental one group pre and post test Methods: Participants comprised17 healthy young adults. All subjects performed a combined exercise program for 10 times using EX1. We measured quadriceps muscle thickness using ultrasound. Additionally, the hand grip strength test, and sit and reach test were performed before and after the exercise. Through paired t-test, we investigated whether there was a statistically significant difference in the measurement results after exercise program. Results: The rectus femoris muscle contraction ratio showed significant difference after exercise(P< 0.01). In the sit and reach test, flexibility showed significant difference after exercise(P < 0.01). The hand grip strength test also showed significant difference after exercise(P < 0.05). Conclusions: Healthy young adults can effectively perform various exercises commonly performed in daily life using EX1.