• 한국수학교육학회지시리즈A:수학교육
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• 제47권1호
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• pp.27-47
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• 2008

In this paper, we study the effect of writing activity as mathematical communication on the students's mathematics achievement, learning attitude, and mathematical tendency. For this purpose, we construct a experimental class and then analyze the students' change in those aspects after applying three-divided-note writing activity and colleague feedback on their works those students are in the experimental class. As a result of the experiment, we find that three-divided-note writing activity and colleague feedback made some significant changes on the students achievement in mathematics, learning attitude, but does not affect on mathematical tendency. We also offer some suggestions for further research. Firstly, the mathematical communication ability must be stressed in mathematics education. For this purpose, we need to develop the teaching and the evaluation method to use not only writing but also reading, speaking, and listening skills so that many teachers can apply this method easily to their classes. Second, we need to fix some realistic problems such as fair evaluation , the numbers of students per class, the numbers of lesson, and too much extra-work, and so on. Thirdly, we suggest to explore some methods for extending three- divided-note writing activity to evaluate mathematical essay and to study educational effects of colleague feedback on mathematics performance assessment.

• 대한의용생체공학회:의공학회지
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• 제28권1호
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• pp.1-7
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• 2007

To determine the effect of posture change on autonomic activity and to investigate valid parameters to reflex the autonomic activity from time-series pupil size data, a posture-related experiment was performed with 15 subjects, which involved measuring their electrocardiograms and pupil sizes. The experimental procedure consisted of three-sequence postures-supine, sitting and upright-for 5 minutes each, with rest sessions between postures. The subjects were notified of the entire experimental procedure. The parameters of the subjects' heart rate variability showed significant differences between the postures (heart rate: 63-70-80 beat, normalized low frequency power: 28-50-75, normalized high frequency power: 72-49-25 and ratio: 0.5-1.2-4.4 in supine-sitting-upright position respectively) as did the parameters of their mean pupil sizes (41300-53900-53700 pixels respectively) and the major frequencies (the third trend: 0.23-0.2-0.18 Hz respectively) of their pupil size variability according to changes in their autonomic activities induced by posture change. The experiment thus proved that posture change affects autonomic activity and that such activity can be estimated by the parameters of pupil size as similar as heart rate variability.

• 여성건강간호학회지
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• 제20권4호
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• pp.309-317
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• 2014

Purpose: The purpose of this study was to review the relationship between physical activity and cardiovascular outcomes in the Korean elderly. Methods: Experimental studies were located using PubMed, CINAHL, PsycINFO, Cochrane, RISS, KISS, and KoreaMed. The selected studies for analysis were 20 articles of cardiovascular outcomes (total cholesterol, triglyceride, high density lipoprotein (HDL), low density lipoprotein (LDL), blood pressure, and pulse rate) from 515 articles. Results: One-group pretest-posttest design was the most common. The main physical activity was an aerobic exercise. Five of 14 studies reported a significant improvement of total cholesterol. Four of 14 studies found relationship between exercise and triglyceride. Eight of 12 studies reported a significant improvement of HDL, whereas 3 of 9 studies reported a significant improvement of LDL. In over 60% of selected studies, reported significant improvement of blood pressure. Conclusion: Based on the review, it suggests that regular physical activity of the elderly may improve cardiovascular outcomes.

• 한국전문물리치료학회지
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• 제13권4호
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• pp.1-9
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• 2006

The purpose of this research was to analyze the effects of the increase of the femoral anteversion angle on the unbalanced quadriceps femoris muscle causing the increase of the valgus force on the knee joints and patellofemoral pain syndrome by comparing with the group that shows the smaller femoral anteversion angle. The method for the research was to compare the femoral muscle's activity while the subjects were maintaining the knee joint flexed isometrically for 10 seconds. The evaluation tool for femoral muscle's activity was QEMG-4 (model LXM 3204). The results were as followings. Firstly, in case of the experimental group, the muscle strength of the vastus lateralis muscle was strong while the rectus femoris and vastus medialis were weak. In these facts, we can see the statistically meaningful difference in vastus medialis muscle activity. Secondly, in the muscle activity analysis for vastus lateralis and medialis of the two groups, we could see the vastus lateralis muscle was strong in anteversion wider for experimental group while the vastus medialis muscle contracted far more stronger in anteversion smaller for control group. From these results, we can see the significant differences in muscle recruitment between the two groups. Above results show that if the anteversion becomes wider, vastus medialis muscle will become seriously weaker, on the other hand, vastus lateralis act stronger.

• 한국산학기술학회논문지
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• 제11권11호
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• pp.4197-4206
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• 2010

본 연구는 규칙적인 신체활동 프로그램이 유아의 기본운동과 일상적인 스트레스에 어떠한 영향을 미치는지를 알아보기 위하여 유아 40명을 대상으로 실험집단과 통제집단으로 나누어 주2회 10주간 실외 신체활동 프로그램을 실시하였다. 그 결과 신체활동 프로그램이 유아의 기본운동능력에서 통제집단에 비해 실험집단이 향상되었다. 또한 유아의 일상적 스트레스에 있어서도 통제집단에 비해 실험집단이 스트레스 감소에 긍정적인 영향을 주었다. 이러한 결과들을 통해 신체활동 프로그램이 유아들의 기본운동능력 발달과 일상적인 생활에서 오는 스트레스를 감소시키는데 긍정적인 영향을 주는 것으로 나타났다.

• 한국전문물리치료학회지
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• 제26권4호
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• pp.42-52
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• 2019

Background: Whole body-electromyostimulation (WB-EMS) is widely used for the rehabilitation and recovery of patients with various neuromusculoskeletal disorders. Objects: To objectively measure changes in lower extremity and abdominal muscles after sit-to-stand dynamic movement training using WB-EMS. Methods: A total of 46 healthy adults (23 experimental and 23 control subjects) performed sit-to-stand exercise; the experimental group with WB-EMS, and the control group without WB-EMS. The muscle activity of the lower extremity, and the muscle thickness of the lower extremity and abdominal muscles were measured before and after the intervention. Results: In terms of electromyographic activity, there was a significant interaction effect for the rectus femoris (RF) muscle (F=30.212, p=.000). With regards to ultrasonographic imaging, the muscle thickness of the RF muscle had a significant interaction effect at the muscle contraction ratio (F=8.071, p=.007). The deep abdominal muscles, such as the transverse abdominal (TrA) and internal oblique (IO) muscles, also showed significant interaction effects at the muscle contraction ratio (F=5.474, p=.024, F=24.151, p=.000, respectively). Conclusion: These findings suggest that WB-EMS may help to improve the muscular activity of the RF muscle, and the muscle thickness of the RF muscle and deep muscles such as the TrA and IO muscles.

• 한국보건간호학회지
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• 제33권2호
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• pp.258-269
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• 2019

Purpose: This study examined the effects of an integrated activity program on the self-efficacy and depression of underprivileged elderly women living alone. Methods: The participants recruited were fifty underprivileged elderly women living alone in D city. Data were collected from September 1 to October 1, 2015. To test the effects of the integrated activity program, the participants were divided into two matched groups, an experimental group (N=25) and control group (N=25). The data were analyzed with a ${\chi}^2-test$, Fisher's exact probability test, and t-test using the SPSS/WIN 12.0 program. Results: After attending the integrated activity program, significant differences between the experimental group and control group were found for self-efficacy (t=9.19, p<.001) and depression (t=-18.31, p<.001). Conclusion: The results indicate that the integrated activity program enhances self-efficacy and reduces depression in underprivileged elderly women living alone. Therefore, this program is a good strategy that community mental health nurses can use to improve the mental health of underprivileged elderly women living alone.

• 대한정형도수물리치료학회지
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• 제18권1호
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• pp.39-48
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• 2012

Background: This study was performed to identify what effect plyometric exercise with application of kinesio taping gives on muscle activity and power of lower limb. Methods: In order to conduct research, total 14 male students at G university located Gwangyang city were randomly assigned; 7 for experimental group (with kinesio taping application) and 7 for control groups(without kinesio taping application) were conducted with box drill, one of the plyometric exercise 5 times a week for 4 weeks. Muscle activities were measured by using electrodiagnosis equipment on quadriceps and gastrocnemius. Collected data was analyzed by using Windows SPSS version 19.0. Results: Muscle activities show statistically significant differences (p<.05) both before and after exercise in experimental and control groups in terms of vastus medialis, rectus femoris, vastus lateralis and lateral gastrocnemius. However, only medial gastrocnemius shows statistically significant differences in experimental group compared before and after exercise. Sargent jump for measuring power shows that only experimental group presents statistically significant differences (p<.05). Two groups show that vastus medialis, vastus lateralis, lateral gastrocnemius and medial gastrocnemius only in muscle activities show statistically significant differences (p<.05) after exercise. Conclusion: The result of this survey indicates that plyometric exercise is effective to improve muscle activity and power of lower limb, especially, the group who exercises with application of kinesio tape is more effective than the other group with no tape application. Therefore, it is considered that plyometric exercise with tape is more effective to improve power and muscle strength.

• Asian Journal of Atmospheric Environment
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• 제5권2호
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• pp.65-78
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• 2011

Ozone ($O_3$) is a main component of photochemical oxidants, and a phytotoxic anthropogenic air pollutant. In North America and Europe, the current concentration of $O_3$ has been shown to have significant adverse effects on vegetation. In this review, we summarize the experimental studies on the effects of $O_3$ on the growth and photosynthetic activity of Japanese forest tree species to understand the present knowledge and provide sound basis for future research toward the assessment of $O_3$ impacts on Japanese forest ecosystem. Since the 1990s, several Japanese researchers have conducted the experimental studies on the effects of ambient levels of $O_3$ on growth and physiological functions such as net photosynthesis of Japanese forest tree species. Although the sensitivity to $O_3$ of whole-plant growth is quite different among the species, it was suggested that the current ambient levels of $O_3$ in Japan are high enough to adversely affect growth and photosynthetic activity of Japanese forest tree species classified into high $O_3$ sensitivity group such as Japanese beech. The N load to soil has been shown to reduce the sensitivity to $O_3$ of Japanese larch and increase that of Japanese beech. To establish the critical level of $O_3$ for protecting Japanese forest tree species, therefore, it is necessary to take into account the N deposition from the atmosphere. There is little information on the combined effects of $O_3$ and other environmental factors such as elevated $CO_2$ and drought on growth and physiological functions of Japanese forest tree species. Therefore, it is necessary to promote the experimental study and accumulate the information on the combined effects of $O_3$ and any other abiotic environmental factors on Japanese forest tree species.

• 초등상담연구
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• 제7권1호
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• pp.91-108
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• 2008

The goal of this study is to examine the sociality and school adjustment of elementary school lower-class students. The following research hypotheses were set up and addressed: Hypothesis 1: There would be significant differences in sociality of the elementary school lower-class students according to activity - making friends group counseling Program. Hypothesis 2: There would be significant differences in school adjustment of the elementary school lower-class students according to activity - making friends group counseling Program. The subjects for the study were 20 first grade students attending N elementary school in Daejeon area. The students were assigned to the two groups-experimental group(N=10) and controlled group(N=10). The experimental group received 10 sessions of the activity - making Friends group counseling program for 40 minutes by 2 times every week, and the controlled group didn't do anything. To verify the hypotheses, two tests(sociality and school adjustment tests) were administered for the pretest and post-test. Means and standard deviations obtained from these tests were analyzed with factorial covariance test using SPSSWIN(10.0). The results were as follows: Hypothesis 1 was confirmed. The scores of experimental group were significantly higher than those of controlled group in sociability, cooperation and independence, but not in observance. Hypothesis 2 was confirmed. The scores of experimental group were significantly higher than those of controlled group in teacher-student relationship, student-student relationship and classes, but not in the keeping rules. The conclusion of the result is that the program have a good effect on the elementary school lower-class students' sociality and school adjustment. Above all, along with long-term adaptability of the research, continuous studies are required.