• The Journal of Korean Physical Therapy
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• v.18 no.3
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• pp.1-7
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• 2006

Purpose: This study was performed to determine the difference or temporal-spatial gait asymmetry ratio according to static pelvic inclination level in hemiplegic patients. Methods: The subjects were 25 hemiplegic patients who was experienced stroke on MCA territory. Gait parameters and static pelvic inclination were recorded by $GAITRite^{(R)}$ system and radiologic PACS. The subjects were divided into three group according to static pelvic inclination. In the group I, the subjects have static pelvic inclination below $58^{\circ}$. The group II has $58^{\circ}{\sim}62^{\circ}$ or static pelvic inclination and the group m has over $62^{\circ}$ or static pelvic inclination. The data or three groups were analysed with ANOVA. Results: In comparison or single support time asymmetry ratio among 3 groups, the score or group II was significantly higher than the other groups(p<0.05). But the swing time asymmetry ratio was not significant(p>0.05). Conclusion: Asymmetry ratio of single support time was statistically significant by static pelvic inclination level. But asymmetry ratio or group II was the highest among three groups. It means that the patients or normal range of pelvic inclination was showed the most asymmetry or gait. And swing time asymmetry ratio was not significant among three groups. Even if the patient has normal ranged static pelvic inclination, it doesn't suggest that the patient has low gait asymmetry.

• The Korean Journal of Community Living Science
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• v.24 no.3
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• pp.289-300
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• 2013

The aims of this study are to investigate the differences of the preschoolers' executive function and verbal ability according to their age, and to identify whether the preschoolers' executive function is related to their verbal ability. The participants in this study are 151 children, ages 3-and 5-years old from five child-care centers located in a middle-income region of Seoul. Statistical methods used for the data analysis are the frequencies, means, standard deviations, an independent t-test, and Pearson correlation. The major findings are as follows. First, an age difference is found for children's executive function. The 5-year-olds are more likely to succeed on tasks of executive function than the 3-year-olds. Also, age difference is found for children's verbal ability. The 5-year-olds perform better on tests of verbal ability than the 3-year-olds. Last, the 3-year-olds' and 5-year-olds' executive function is related to their verbal ability. Inhibition and cognitive flexibility are significantly correlated with verbal ability. These results suggest that preschoolers' executive function and verbal ability develop during preschool age. These results also suggest that preschoolers' executive function is related to their verbal ability.

• Journal of the Korean School Mathematics Society
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• v.12 no.3
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• pp.307-317
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• 2009

Formally p$\rightarrow$q means that affirming p one implicitly affirms q and that denying q one implicitly denies p. Denying p or affirming q do not lead to certain conclusions. Middle school students can recognize practical implication p$\rightarrow$q is true whenever p is false, but they don't recognize theoretical implication p$\rightarrow$q is true whenever p is false. They have not assimilated intuitively the complete structure of implication. Thus they do not distinguish naturally between the uncertain conclusion which can be drawn by affirming p and the certain rejection of p which follows from the negation of q. Also they can not recognize the uncertain conclusion which can be drawn by negation of p. There is no significant difference between practical conditional statements, formal conditional statements and conditional Inferences in advanced mathematics students. But there is a significant difference between formal conditional inferences and specific conditional inferences with statement p$\rightarrow$q is true when p is false.

• Journal of the Korean Society of School Health
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• v.23 no.2
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• pp.256-265
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• 2010

Purpose: The purpose of this study was to identify the psychological problems of the children in early stage and provide basic data for develop the children's mental health promotion programs. Methods: There were 270 subjects who were fist and forth grade of elementary school and the data was collected through their parents. This study use Child Problem-Behavior Screening Questionnaire that was divided into five sub-scales, including internal problems, external problems, cognitive problems, abuse problems and psychosomatic problems. Each sub-scales have one cutting points, children whose scores above the cutting points means abnormal in correspond subscale. Results: 1) The most appearing problems was psychosomatic problems with 10.8% of subjects and next internal problems with 8.6% of subjects in elementary school student. 2) For distribution of mental behavior development according to gender, there was significant difference in psychosomatic problems between male and female (p =.009). 3) For distribution of mental behavior development according to grade, the results showed that significant difference in internal problems (p =.000) and total scores of CPSQ (p =.012) between first grade and forth grade. Conclusion: When we develop children's mental health promotion program, it is necessary to considerate the gender and grade characteristics.

• Journal of Korea Water Resources Association
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• v.37 no.2
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• pp.155-161
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• 2004

The purpose of this study is to verify LSPIV technique. Verification was made using moving cart with known velocity. The difference of velocity values obtained using these methods are within 5％, which means that LSPIV can be used in the field with reasonable accuracy After verification, LSPIV was applied to the river. The Neungwon stream and the Gonjiam stream, tributaries of the Kyungan stream, were selected as the test sites for application. The results of the test application were compared with those obtained by 3-D electromagnetic current meter and electron-wave surface velocity meter. Results show that the velocity values obtained using LSPIV coincide well with those obtained using conventional devices with maximum difference of 8％.

• Journal of Korean Physical Therapy Science
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• v.11 no.4
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• pp.5-10
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• 2004

This study selected 10 university football male players and repeatedly treated them as sports massage group, exercise resumption group, and stability resumption. After maximum exercise, when sport massage, exercise resumption, and stability resumption were applied during recovery, blood lactic acid concentration and $LDH_5$ isozyme concentration were examined. Finally this study obtains the following conclusion 1. There was a significant difference in both lactic acid concentration and time between groups. Besides, the cross-action on group and time was significant. 2. There was a significant difference in both $LDH_5$ concentration and time between groups. Besides, the cross-action on group and time was significant. Based on the above findings, this study suggests that sport massage resumption and exercise resumption remove blood lactic acid more quickly than stability resumption to promote recovery. That means that sport massage and exercise resumption anre very effective for lowering the level of fatigue. Thus sport massage or exercise resumption treatment is considered to have a very positive effect on player's quick recovery and it should be used aggressively in a field.

• Journal of Biosystems Engineering
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• v.21 no.1
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• pp.52-59
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• 1996

In this study, the combined forces of electro-osmosis and compression were applied to cabbage dewatering and their effects were discussed. Nine treatments of combined forces consisting of three levels of voltage and compression were applied to chopped and macerated chinese cabbage placed in the experimental set-up consisted of cylinder-piston. The results showed that as both voltage and pressure increased the dewatering rates increased and the combined force of voltage and compression was a very effective means in the dewatering of chinese cabbage in which the largest dewatering rate difference, 72%, was found between the combined force of 30V with 68.2kPa and no voltage(0V) with 68.2kPa. However, no significant difference was found between the voltage of 0 and 10volts in 9.75kPa and the pressure of 68.2kP and 126.7kPa in 30volts. The maximum and minimum dewatering rate were 82% in the combined force of 30 volts of 126.7kPa and 8% in 0 volt of 9.75kPa, respectively. Within the experimental trials, it appeared that the best treatment combination would be pressure of 68.2kPa and voltage of 30V producing dewatering rate of 80ft in which the produced liquid contained about 1% solid. Employing this dewatering method as a pretreatment before drying process can contribute in considerable energy saving in agricultural wastes treatment.

• Journal of Nutrition and Health
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• v.33 no.1
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• pp.68-79
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• 2000

This study was developed the nutrition education program for kindergarten children and was evaluated its educational effect by 'Non-equivalent control group design'. Nutrition education program was developed on the basis of the concept which consisted of nutrition, nutrients, food handling, life cycle and social$.$psychological needs. And it was developed on the basis of the theme which consisted of kind of foods, relation between food and body, importance of food, food and sanitation, food and environment, Korean traditional food and good table manners. Subjects consisted of 157 kindergarten children, with 48 in control group and 109 in treatment group. All the subjects completed a pretest and a posttest and the posttest means between control and treatment group were compared. The control group had a adjusted posttest mean score of nutrition knowledge of 50.64 and the treatment group had that of 75.19 and the difference was significant(p<0.001). The control group had a adjusted posttest mean score of food attitude of 65.49 and the treatment group had that of 85.40 and the difference was significant(p<0.001). (Korean J Nutrition 33(1) : 68-79, 2000)

• Journal of rehabilitation welfare engineering & assistive technology
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• v.5 no.1
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• pp.111-115
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• 2011

In this paper, we present a novel time-synchronization method for distributed systems to measure the body motion. The distributed system scheme is considered because human data acquisition systems tend to have a centralized controller with sensors connected with a long range of electric wires running through the subject's body, which results in inconvenience. Utilizing simple key switches and digital input ports for reading the key, the proposed method requires a very simple hardware structure, which means less power consumption compared with the well-known ubiquitous sensor network. After measuring the motion data as well as the synchronization pulses, the proposed method compensates, in offline, the difference of the sampling instance between the two systems by scaling the time difference. The paper presents experimental results to show the validity of the proposed method.

• Journal of Sport and Applied Science
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• v.4 no.3
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• pp.11-22
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• 2020

Purpose: The purpose of this study is to analyze the effect of college sport club participants' ego-resilience on the college adjustment. Research design, data, and methodology: To accomplish the purpose, 360 participants were sampled by means stratified cluster random sampling method. Only 317 questionnaires were statistically processed, while 43 questionnaires were excluded because their respondents failed to complete instrument and judged insincere in filling out questionnaire. To analyze the data collected, statistical techniques, such as descriptive statistics, reliability analysis, independent-sample t-test, and one-way ANOVA, multiple regression analysis were used, and as for difference verification between individual groups in relation to significant results, Duncan's multiple range was conducted. Results: The following results have been drawn out via hypothesis test. First. the background variable of the college sport club participants of was proved to affect the degree of their ego-resilience on the college adjustment. Specifically, their period of participation, frequency of participation and expenses made a statistically meaningful. Second, the college sport club participants of ego-resilience were proved to affect the college adjustment. Academic adjustment, social adjustment, personal-emotional adjustment and institutional attachment made a statistically meaning-full difference. Conclusions: The findings indicate the function of sport club participants' ego-resilience in assisting their adjustment.