• Journal of Ginseng Research
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• v.19 no.3
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• pp.231-236
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• 1995

The antioxidant activity and the pharmacologically active constituents such as nucleosides and phenolic substancs of Panax ginseng C.A. Meyer (white ginseng powder) treated with gamma irradiation (Rl group) and ethylene oxide fumigation (EO group) were compared with those of non-treated ginseng (control group). High performance liquid chromatograms of nucleosides in three groups were similar with each other. The bathochromic effect of phenolic substances at W absorption region tends to be higher for EO group than Rl group. This tendency was also observed in heat treatment of each group. However, the antioxidant activity may have some effects on the labile property of phenolic substances. In summary the gamma-irradiated ginseng was more stable than the ethylene oxide-treated ginseng, but both ginseng samples gave the similar antioxidant activity.

• Speech Sciences
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• v.13 no.3
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• pp.185-195
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• 2006

This study aims to clarify disfluency loci in a neurogenic stuttering group and to examine how the characteristics are different from a developmental stuttering group. For the study, spoken language samples were collected from 11 adults with developmental stuttering and 11 adults with neurogenic stuttering in the course of speaking tasks including reading, monologue and conversation. Using the collected samples, disfluency characteristics of the two groups were to be investigated by analyzing adaptation effect, consistency effect and frequency of disfluency occurrence according to word position, which are related to the occurrence loci of disfluency. Results of this study were as follows: First, while the neurogenic stuttering group did not show any adaptation effect, the developmental stuttering group showed the adaptation effect that the percent of disfluency word reducing as they read the same materials repeatedly. Second, there was no meaningful difference of consistency effect between the two stuttering groups. Third, the neurogenic stuttering group showed more disfluency frequency in final sounds among the word position compared to the developmental stuttering group.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.21 no.3
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• pp.166-183
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• 2008

Objective : The purpose of this study is to investigate the difference of pathogenesis between tinnitus patients group and healthy volunteers group by using DSOM (Diagnostic system of Oriental Medicine). Methods : Patients group is consisted of people who do not have any disorder except tinnitus, and healthy volunteers group is consisted of people who do not have any special symptom and past history. DSOM was used for pathogenesis investigation of these two groups. Results : There were significant differences between volunteers group and patients group in blood (血虛), dampness (濕), phlegm (痰) (p<0.05), In gender of patients group, deficiency of blood (血虛) was shown with female group statistically more than male group (p<0.05). On the other hand, with volunteers group, there was negligible difference between male and female. In age (over and below 50years), noticeable deficiency of blood (血虛) was shown in patients group. Especially, the old people who are over 50 years showed more deficiency of blood (血虛) than younger group (under 50 years) (p<0.05). With volunteers group, there was only negligible difference. Conclusion : This result showed definite difference in the pathogenesis between tinnitus patiensts group and healthy volunteers group.

• Journal of the Korean Society of Earth Science Education
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• v.7 no.1
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• pp.1-10
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• 2014

The purpose of this study is to introduce the science-play in the regular class, stimulate the student's curiosity, motivate them and take active part in their science class. To make an effective science class, we developed the science-play activity instead of experiments in the text, and applied it to the class. The experimental group has statistically meaningful results in the science process skills, expecially in subordinate elements such as observation, deduction, expectation, data analysis and assumption establishments(p<.01). However, the comparative group has no meaningful results in the science process skills. Though the average value of the science related attitude in the experimental group had only a little increase and had no statistically meaningful results, that in the comparative group has decreased during the same period. As for the experimental group, the science-play activities were repeated and their science related attitude has increased a little. Even though there were no meaningful statistic results(p>.05), the science-play activity was effective in the science related attitude. As a result of this research, it could be said that the science-play activity can improve the student's science process skills and the science related attitude, and the science-play program should be further developed and applied to make easy and effective science classes.

• Journal of the Korean Chemical Society
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• v.56 no.6
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• pp.759-767
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• 2012

The purpose of this study was to examine the impact of Science Writing Heuristic (SWH) on multiple representations in students' writing and to survey experimental group students' recognition about the use of multiple representations. For this study, Participants of this study were 158 students in 7th grade. 94 students were assigned to the experimental group and 64 students were assigned to the comparative group. The experimental group showed significantly higher mean score than comparative group at utilizing multiple representation in summary writing. Interview analysis indicated that all students who participated in interviews, regardless of solid multi-modal competency, recognized that use of multiple representations with appropriate explanations enable to communicate science information persuasively.

• Nutrition Research and Practice
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• v.8 no.6
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• pp.695-704
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• 2014

BACKGROUND/OBJECTIVES: The type of sweet snack incorporated into an energy-restricted diet (ERD) may produce differential effects on metabolic improvements associated with body weight (BW) loss. This study compared effects of incorporating either twice daily energy-controlled dark chocolate snacks plus once daily sugar-free cocoa beverage (DC) to non-chocolate snacks plus sugar-free non-cocoa beverage (NC) into an ERD on BW loss and metabolic outcomes. MATERIALS/METHODS: In an 18-week randomized comparative trial, 60 overweight/obese premenopausal women were assigned to DC (n = 30) or NC group (n = 30). Dietary intake was measured at baseline and week 18, and BW, anthropometrics, blood pressure (BP) and serum glucose, insulin and lipid concentrations were measured at baseline, and weeks 6, 12 and 18. Data were analyzed using repeated measures ANOVA. RESULTS: Using intention-to-treat analysis, women in DC and NC groups reduced energy intake (both P < 0.001) and lost $4.4{\pm}0.6kg$ and $5.0{\pm}0.9kg$ (both P < 0.001), respectively. Both groups lowered systolic and diastolic BP [DC = 2.7 (P < 0.05), 2.7 (P < 0.01); NC = 3.4 (P < 0.01), 4.2 (P < 0.01) mmHg, respectively]. Glucose and insulin concentrations decreased by 0.72 mmol/L (P < 0.001) and 13.20 pmol/L (P < 0.01) in DC group and by 0.83 mmol/L (P < 0.001) and 13.20 pmol/L (P < 0.01), respectively, in NC group. Total cholesterol increased in NC group (P < 0.05), with no significant lipid changes in DC group. There were no significant differences in biomarker outcomes between groups. CONCLUSIONS: Overweight/obese premenopausal women following an 18-week ERD that included either DC or NC sweet snack and sugar-free beverage lost equivalent amounts of BW and improved BP measurements and glucose and insulin concentrations.

• Journal of the Korea Convergence Society
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• v.7 no.4
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• pp.199-208
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• 2016

This study aims to examine the influence of laughter therapy program on successful aging and stress of elderly by applying 60 minutes of laughter therapy program twice a week for 10 weeks to elderly. By the selection standard, 25 subjects for experimental group at cultural center located in city S, 25 subjects each for comparative group and control group are convenience sampled at senior citizen center located in city S. The data analysis of this study utilized SPSS 19,0 to conduct Analysis of Covariate(ANCOVA). As for the result of conducting laughter therapy program for 10 weeks, the experimental group showed increased successful aging of elderly and reduced stress than the comparative or control group.Therefore, this study has prepared a ground to apply and verify the scientific basis of laughter therapy program in the current condition where various aging problems are emerging due to the aging society.

• Journal of Chest Surgery
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• v.45 no.4
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• pp.225-229
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• 2012

Background: Reoperation of cardiac surgery via median sternotomy can be associated with significant complications. Thoracotomy is expected to reduce the risk of reoperation and to enhance the surgical outcomes. We retrospectively analyzed two operative approaches (thoracotomy vs. sternotomy) in cardiac reoperation. Materials and Methods: From September 2007 to December 2010, 35 patients who required reoperation of the mitral valvular disease following previous median sternotomy were included. Average age of patients was $45.8{\pm}15.4$ years (range, 14 to 76 years) and male-to-female was 23:12. Interval period between primary operation and reoperation was $135.8{\pm}105.6$ months (range, 3.3 to 384.9 months). Results: Comparative analysis was done dividing the patient group into two groups that are thoracotomy group (22 patients) and sternotomy group (13 patients). Thoracotomy group was significantly lower in operative time ($415.2{\pm}90.3$ vs. $497.5{\pm}148.0$, p<0.05), bleeding control time ($108.0{\pm}29.5$ vs. $146.4{\pm}66.8$, p<0.05) and chest tube drainage ($287.5{\pm}211.5mL$ vs. $557.3{\pm}365.5mL$, p<0.05) compared to sternotomy group. Conclusion: The thoracotomy approach is superior to sternotomy in some variables, and it is considered as a valid alternative to repeat median sternotomy in patients who underwent a previous median sternotomy.

• Journal of Elementary Mathematics Education in Korea
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• v.8 no.1
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• pp.23-43
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• 2004

The purposes of this study are, by referring to various previous studies on problem posing, to re-construct problem posing steps and a variety of problem posing learning materials with a problem posing teaching-learning model, which are practically useful in math class; then, by applying them to 4-Ga step math teaming, to examine whether this problem posing teaching-learning model has positive effects on the students' problem solving ability and mathematical attitude. The experimental process consisted of the newly designed problem posing teaching-learning curriculum taught to the experimental group, and a general teaching-learning curriculum taught to the comparative group. The study results of this experiment are as follows: First, compared to the comparative group, the experimental group in which the teaching-teaming activity with problem posing was taught showed a significant improvement in problem solving ability. Second, the experimental group in which the teaching-learning activity with problem posing was taught showed a positive change in mathematical attitude.

• Journal of the Korea Society of Computer and Information
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• v.17 no.12
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• pp.111-120
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• 2012

As the P2P System is a distributed system that shares resources of nodes that participate in the system, all the nodes serve as a role of server and client. Currently, although systematic, structured P2P systems such as Chord, Pastry, and Tapestry were suggested based on the distributed hash table, these systems are limited to $log_2N$ for performance efficiency. For this enhanced performance efficiency limited, the article herein suggests group routing algorithm. The suggested algorithm is a node-to-group routing algorithm which divides circular address space into groups and uses a concept of pointer representing each group, which is an algorithm where routing is performed based on pointer. To evaluate algorithm performance, a comparative analysis was conducted on average hops, routing table size, and delayed transmission for chord and routing, a signature algorithm in P2P systems. Therefore, enhanced performance is verified for comparative items from the simulation results.