• International Journal of Oral Biology
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• v.36 no.4
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• pp.163-166
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• 2011

Oral viridans streptococci are recognized as one of the etiological agents of a variety of infectious diseases such as dental caries and infective endocarditis. Although antimicrobial susceptibility tests for these fastidious bacterial species are now established and standardized, a comparison between the broth microdilution and broth macrodilution tests has not previously been performed. This comparison was performed in the present study using the tests adopted by the Clinical and Laboratory Standards Institute (CLSI) and seven clinical isolates of oral viridans streptococcal strains. A modified broth macrodilution susceptibility test method was also included in this analysis, in which the media was not supplemented with horse blood. The susceptibility interpretation category agreements were measured at 83% (broth microdilution versus broth macrodilution) and 71% (broth microdilution versus modified broth macrodilution). The interpretation category agreement between the broth macrodilution and modified broth macrodilution tests was also 83%. These data indicate that the interpretation of antibiotic susceptibility test results for oral viridans streptococci are influenced by the methods used.

• Journal of Elementary Mathematics Education in Korea
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• v.16 no.1
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• pp.97-124
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• 2012

The purpose of this study is to examine the effects of mathematics instruction using children's literature on students' mathematical communication and attitude. To conduct this research, a total of 59 6th grade students were selected from an elementary school in Seoul, and three different types of teaching methods using children's literature were applied to the treatment group, while a traditional teaching method was adopted to the comparison group. Children's literature was used in the actual classroom environment for about 20 minutes in the course of 10 weeks treatment, and the results were analyzed to find the effects of using children's literature during mathematics teaching on students' mathematical communication skills and attitudes toward mathematics. The results of the present study were as follows: First, with respect to mathematical communication aspects, the treatment group achieved significantly higher mathematical communication skills than that of the comparison group. That is to say, this result shows that students learning mathematics using children's literature seem to have more mathematical communication abilities than students in the textbook-based mathematics learning group. Secondly, the results of this study point out that students in the treatment group have more positive attitude toward mathematics as a result of learning that the other group of students focused on textbook-based mathematics learning. In conclusion, the current study demonstrates that mathematics teaching using children's literature made more significant impact on students' mathematical communication ability and attitudes toward mathematics than the comparative method focused on a traditional textbook-based mathematics teaching method.

• Journal of the Korean Solar Energy Society
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• v.28 no.4
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• pp.56-61
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• 2008

The modeling of PV (Photovoltaic) module is useful to perform detailed analysis of PV system performance for changing meteorological conditions, verify actual rated power of PV system sizing and determine the optimal design of PV system and components. This paper indicates a modeling approach of PV module performance in terms of meteorological conditions and identifies validity of this modeling method by comparing measured with simulated value of various PV modules using simulation model.

• Journal of the Korea Society of Computer and Information
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• v.28 no.12
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• pp.175-182
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• 2023

In this paper, we propose a study compared and analyzed the CPR results and muscle fatigue of the three groups. There is a group that counts loudly when compressing the mannequin's chest (Group A), a group that breathes autonomously without counting (Group B), and a group that breathes abdominally without counting (Group C). Twelve people were assigned to each group, and after performing chest compressions for 5 minutes, the results of CPR were analyzed using a program connected to the mannequin, and the muscle fatigue of the performers was analyzed using wireless electromyography. The most efficient method was found to be group B. If we only look at the speed and depth of compression within the normal range, Group C would be more efficient, but Group B showed significantly lower muscle fatigue, and Group A did not reach the normal range in depth of chest compression and muscle fatigue was the highest. Group B was also found to be the most accurate in hand positioning accuracy, and was also found to be the most efficient in maintaining concentration on chest compressions.

• Journal of The Korean Society of Integrative Medicine
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• v.5 no.1
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• pp.1-9
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• 2017

Purpose : This study is to examine the effects of different task-related circuit training by types of tasks on the depression and quality of life in stroke patients. Method : Forty-four chronic stroke patients were divided into a dual motor circuit task training group, a dual cognitive circuit task training group and a simple task training group. Over the course of eight weeks, before training, all the patients were identically encouraged to receive conservative physical therapy for 30 minutes, five times a week for a total of eight weeks with individual additional tasks. The dual motor circuit tasks training consisted of continuous circuit training motor tasks and additional motor tasks and the dual cognitive circuit task training consisted of tasks combining the same circuit training motor tasks and additional cognitive tasks. The simple task training consisted of natural walks on a flat terrain to the front, rear and lateral sides of the terrain. Result : As for the Stroke-Specific Quality of Life(SS-QOL) that showed significant diffe rences in comparison between the groups over the training period, the dual motor circuit task training group showed statistically significant differences in both different types of tasks at 8 weeks(p<.05). The score of Hospital Anxiety and Depression Scale(HADS) decreased in three groups, in the HADS showed significant changes over the training time in the three training groups(p<.05). Conclusion : It could be seen that the practical and continuous dual circuit task training was more effective than simple task training on quality of life. In comparison between the types of dual tasks, the dual motor circuit task training group showed more effects than the dual cognitive circuit task training group. This researcher hopes that the results of this study will be actively applied as rehabilitation methods for chronic stroke patients.

• Korean Journal of Community Nutrition
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• v.18 no.2
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• pp.112-124
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• 2013

This study was conducted to investigate how child-care teachers participate, practice mealtime instruction, and perceive difficulties in food service, focusing on comparison between the teachers caring two different age groups: children younger than three years (Younger Group) and those three years or older (Older Group). Questionnaires were distributed to 151 child-care centers in Kwanak-gu, Seoul, Korea during December, 2011. Only the data from 25 child-care centers, where two respective teachers in charge of Younger Group and Older Group completed the questionnaires, were analyzed. The results showed that there was no difference in terms of child-care teachers' participation in food service practice between the two groups, except for serving method; 'Pre-plated' serving was used significantly more often in Younger Group, whereas 'Line-up' serving was used in Older Group. Approximately, three quarters of the child-care centers had policies or guidelines on mealtime instruction. During mealtime, child-care teachers tended to use frequently verbal instructions such as "sit up straight when you eat" about eating manner, "don't be picky with your food" about eating habit, and "wash your hands before eating" about eating procedure in both the groups. There was no statistically significant difference regarding child-care teachers' perceived difficulties in food service between the two groups. These results indicated that child-care teachers' participation and mealtime instruction in food service did not differ between the two age groups, although children's development of digestion and eating skill differed by age. Therefore, training should be provided to child-care teachers about food service practices and mealtime instruction appropriate to children's age.

• Journal of The Korean Society of Integrative Medicine
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• v.9 no.1
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• pp.49-57
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• 2021

Purpose: The purpose of this study was to investigate the effect of manual lymphatic drainage (MLD) methods on muscle tone, pain, and depression in patients with breast cancer. Methods: The study had a two-group pretest-posttest design. A total of 24 patients with breast cancer voluntarily participated in the study. Subjects were randomly assigned to the MLD (n=12) and control (n=12) groups. Measurements of muscle tone, pain, and depression were taken prior to starting the intervention and after completing the 4 week program. The muscle tone, pain, and depression were measured using noninvasive muscle tone measuring equipment, the short-form McGill pain questionnaire, and the Beck depression inventory, respectively. The intervention was performed for 20 minutes a day, three times a week, for four weeks. A paired t-test was used to compare pretest and posttest values within each group, and an independent t-test was used to compare to pretest and posttest changes between the groups. Results: Comparison of the effects within the groups revealed significant reductions in muscle tone, pain, and depression in the MLD group after 4 weeks (p<.05), whereas the control group showed no differences. Comparison of the effects between the groups revealed significantly better reductions in muscle tone, pain, and depression in the MLD group than in the control group after 4 weeks (p<.05). Conclusion: These results suggest that MLD is an effective method for reducing muscle tone, pain, and depression in patients with breast cancer.

• Journal of The Korean Society of Integrative Medicine
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• v.10 no.2
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• pp.105-113
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• 2022

Purpose: The purpose of this study is to investigate the effect of non-invasive transcranial direct current stimulation (tDCS) on muscle activity, including 10 m WT, TUG, and BBS, in hemiplegic stroke patients. Methods: This study was conducted on 42 inpatients diagnosed with hemiplegia due to stroke at hospital B in Daejeon for more than 6 months. Walking training was conducted for six weeks, five times a week for 30 minutes, with a general walking group (14 people), tDCS walking group (14 people), and tDCS (sham) walking group (14 people). Results: As a result of the study, the change in the muscle activity before and after tDCS intervention was significantly increased in the tibialis anterior muscle in the CG group. In the EG group, the erector spine (lumbar), rectus femoris, and tibialis anterior muscles significantly increased. In the SEG group, significant increases were observed in the rectus femoris and tibialis anterior muscles. Significant differences were found in the rectus femoris and tibialis anterior muscles in the comparison between groups after intervention according to tDCS application. Also, 10 m WT, TUG, and BBS were significantly increased in the CG, EG, and SEG groups after intervention, and there were significant differences in 10 m WT, TUG, and BBS in comparison between groups after intervention according to tDCS application. Conclusion: As a result, tDCS is an effective in improving the walking ability of stroke patients, and in particular, it effectively increases the muscle activity of the rectus femoris and tibialis anterior muscles, which act directly on walking, and also improves the speed and stability of walking. It is considered being an effective method to increase the gait of stroke patients by combining it with the existing gait training.

• Journal of the Korea Society of Computer and Information
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• v.28 no.12
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• pp.183-189
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• 2023

The propose of this study was to investigate the effects of squat exercise using a reformer on muscle strength, range of motion, and gait in hip joint replacement patients. This study was conducted on 20 patients hospitalized at a rehabilitation hospital in G City. As an intervention method, the experimental group performed squat exercises using a reformer, and the control group performed squat exercises, 7 times a week for 2 weeks. In the within-group comparison of the reformer group, there was a significant difference in hip flexion, extension, and abduction strength (p<0.05). There were significant differences within the group in the range of motion of hip extension and abduction and gait in the Reformer group (p<0.05). In comparison between groups, significant differences occurred in hip extension strength, hip extension, abduction range of motion, and gait (p<0.05).

• Journal of Dental Rehabilitation and Applied Science
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• v.36 no.1
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• pp.29-40
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• 2020

Purpose: The purpose of this study was to compare the accuracy of impression taking method using the encoded healing abutment, scan body and pick-up impression coping with different implant angulations. Materials and Methods: Master model was fabricated by 3D printer and three implants were placed into the model with 0°, 10° and 20° mesial angulation. The abutments were secured to each implants and master model was scanned to make a reference model. Group P model was fabricated using pick-up impression copings and model was scanned after securing the abutments. Encoded healing abutment (Group E) and scan body (Group S) were secured on the master model and digital impression was taken using intraoral scanner 15 times each. Each STL files of test groups were superimposed with reference model using best fit alignment and root mean square (RMS) value was analyzed. Results: The RMS values were lowest in Group P, followed by Group S and Group E. Group P showed significant difference with Group S and E (P < 0.05) while there was no significant difference between Group S and E. Correlation between implant angulation and RMS value was significant in Group E (P < 0.05). Conclusion: The pick-up impression coping method showed higher accuracy and there was no significant difference in accuracy between the healing abutment and the scan body. The clinical use of the encoded healing abutment is possible, but it should be used with caution in the case of angulated implant.