• The Mathematical Education
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• v.47 no.2
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• pp.113-133
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• 2008

This study is to develop the methods of specifying teaching that can consider individual differences in middle school geometry education. The purpose of this study is to decide the variations causing individual differences and to find the proper learning methods considering the variations. Through literature review, this study made it clear that the matter of individual difference is just the matter of talent and examined what factors make up mathematical talents. On the basis of the result, five important variations and fourteen subordinate factors were determined. I researched into the learning methods that consider the determined subordinate factors using the 'congruence' unit of middle school textbooks and developed specific learning methods for each of the subordinate factors through specific congruence problem solving situations. This study can be summarized as follows : I researched the studies of mathematical ability conducted by several educators and psychologists. This research is divided into the early study and the developed study of mathematical ability. Through this study five specific variations were determined. And fourteen subordinate factors have been made from the determined variations. The specific learning methods based on individual differences was developed according to the fourteen subordinate factors on the basis of middle school textbooks of Korea, Gusev's textbook, problem books of Russia, and etc.

• The Journal of Information Systems
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• v.14 no.3
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• pp.117-122
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• 2005

This paper presents a method for detecting scene changes in video sequences, in which the $chi^{2}$-test is modified by imposing weights according to NTSC standard. To automatically determine threshold values for scene change detection, the proposed method utilizes the frame differences that are obtained by the weighted $chi^{2}$-test. In the first step, the mean and the standard deviation of the difference values are calculated, and then, we subtract the mean difference value from each difference value. In the next step, the same process is performed on the remained difference values, mean-subtracted frame differences, until the stopping criterion is satisfied. Finally, the threshold value for scene change detection is determined by the proposed automatic threshold estimation algorithm. The proposed method is tested on various video sources and, in the experimental results, it is shown that the proposed method is reliably estimates the thresholds and detects scene changes.

• The Journal of the Korea Contents Association
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• v.9 no.11
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• pp.399-406
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• 2009

This research target students who are majoring in sports at junior colleges and it purpose lies in analyzing the differences in the perspectives towards sports related occupations following the individual characteristics of the students. First, when it comes to the difference of the interest in an organization, sophomore shows more difference than freshman and students who are more than 23 years old shows more difference than students who are 21 or 22 years old. Second, when it comes to the difference in economic incomes, sophomore shows more difference than freshman and students who are more than 23 years old shows more difference than students who are 19 or 20 years old. Third, when it comes to the difference in societal status, sophomore shows more difference than freshman. Fourth, when it comes to the difference in the sense of pride towards one's occupation, male students shows more difference than female students, freshman shows more difference than sophomore and students who are more than 23 years old shows more difference than students who are 21 or 22 years old and 19 or 20 years old. Fifth, when it comes to the difference in preference, male students shows more difference than female students. Sixth, when it comes to the rise of social position, there is no difference in sex, school year or age.

• Korean journal of food and cookery science
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• v.13 no.2
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• pp.192-203
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• 1997

The purpose of this study is to investigate the difference of dietary habits between normal and handicapped children. This study was performed with 166 normal children and 154 handicapped children in Incheon area. There was very significant differences of dietary habits between normal and handicapped children, but there was no significant difference in disable type.

• Journal of the Korean Society of Clothing and Textiles
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• v.25 no.2
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• pp.249-258
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• 2001

The purpose of this study was to determine if personality types affect apparel evaluation. Personality types was applied using Myers-Briggs Type Indicator(MBTI). The data were collected from 101 female using questionnaire to evaluate on apparel, and were analysed with factor analysis, Mann-Whitney test. Results revealed several significant differences with apparel evaluation to personality type. Extroversion and introversion had significant difference in fashion concern. Extroversion types were significantly evaluated fashion concern more than introversion types. Sensing and intuition had significant difference in conformity. Sensing types were significantly evaluated conformity more than intuition types. Thinking and feeling had significant difference in symbolism. Thinking types were significantly evaluated symbolism more than feeling types. Judging and perceiving had significant difference in conformity. Judging types were significantly evaluated conformity more than perceiving types.

• Journal of the Korean Data and Information Science Society
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• v.24 no.6
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• pp.1449-1454
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• 2013

There are many methods for measuring the difference between two location parameters. In this paper, statistics are proposed in order to estimate the difference of two location parameters. The statistics are designed not using the means, variances, signs and ranks, but with the cumulative distribution functions. Hence these are measured as the differences in the area between two univariate cumulative distribution functions. It is found that the difference in the area between two empirical cumulative distribution functions is the difference of two sample means, and its integral is also the difference of two population means.

• The Korean Journal of Community Living Science
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• v.17 no.4
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• pp.127-135
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• 2006

This study investigated differences of opinion between youth and their parents about having permission to date. Opinions on youth dating permission was gathered from 150 adolescents and their parents. The results were as follows: first, for adolescents there were significant differences of opinion about youth dating permission depending on gender, age, scholastic record, and birth order, but for parents, the difference related to the gender and age of adolescents. Second, the result indicated that adolescents had a greater acceptance of dating permission than their parents, expressing a generational difference. Third, where the scholastic record of subjects was low, where subjects were non-eldest siblings, and where the parents' level of youth dating permission was high, the level of youth dating permission was higher. A main predictor of youth's level of dating permission was the level of the parents about youth dating.

• Progress in Medical Physics
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• v.27 no.4
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• pp.203-212
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• 2016

Dose differences between three-dimensional (3D) and four-dimensional (4D) doses could be varied according to the geometrical relationship between a planning target volume (PTV) and an organ at risk (OAR). The purpose of this study is to evaluate the correlation between the overlap volume histogram (OVH), which quantitatively shows the geometrical relationship between the PTV and OAR, and the dose differences. 4D computed tomography (4DCT) images were acquired for 10 liver cancer patients. Internal target volume-based treatment planning was performed. A 3D dose was calculated on a reference phase (end-exhalation). A 4D dose was accumulated using deformation vector fields between the reference and other phase images of 4DCT from deformable image registration, and dose differences between the 3D and 4D doses were calculated. An OVH between the PTV and selected OAR (duodenum) was calculated and quantified on the basis of specific overlap volumes that corresponded to 10%, 20%, 30%, 40%, and 50% of the OAR volume overlapped with the expanded PTV. Statistical analysis was performed to verify the correlation with the OVH and dose difference for the OAR. The minimum mean dose difference was 0.50 Gy from case 3, and the maximum mean dose difference was 4.96 Gy from case 2. The calculated range of the correlation coefficients between the OVH and dose difference was from -0.720 to -0.712, and the R-square range for regression analysis was from 0.506 to 0.518 (p-value <0.05). However, when the 10% overlap volume was applied in the six cases that had OVH value ${\leq}2$, the average percent mean dose differences were $34.80{\pm}12.42%$. Cases with quantified OVH values of 2 or more had mean dose differences of $29.16{\pm}11.36%$. In conclusion, no significant statistical correlation was found between the OVH and dose differences. However, it was confirmed that a higher difference between the 3D and 4D doses could occur in cases that have smaller OVH value.

• Child Health Nursing Research
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• v.16 no.3
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• pp.230-238
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• 2010

Purpose: The purpose of this study was to examine gender differences in self-competence, social anxiety and depression in upper level primary school children. Methods: In this cross-sectional study, data were collected from 180 students in grades 5 or 6 (83 boys and 97 girls). The instruments used for this study were a self-report questionnaire, the Self-Perception Profile for Children, the Revised Social Anxiety Scales for Children (SASC-R) and a Depression Instrument. For data analysis, descriptive statistics, t-test, Pearson correlation coefficients, and stepwise multiple regression were used with the SPSS/PC ver 12.0 program. Results: The only gender difference was in depression and girls reported more depression than boys. Social competence showed significantly negative correlations with depression and social anxiety. Gender differences were found in self competence in the prediction of depression and social anxiety. Conclusion: The results of this study indicate that there are gender differences in self competence which influence depression and social anxiety. Thus, enhancing self-competence could prevent social anxiety and depression in children but, differences in gender should be considered when developing programs to enhance self-competence.

• Korean Journal of Health Education and Promotion
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• v.13 no.1
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• pp.90-116
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• 1996

The purpose of this study is to provide basic data for the children so as to avoid any accidents and to improve their health through a sound and safe living environment with safety education established through more systematic methods. For the study, the methods used include the questionnaires for collecting data which are distributed among 273 children from 3 to 6 years old. They live in three districts of Seoul (Kangnam and Kangbuk), Kyeonggido (Munsan and Ilsan) and Incheon. The children's general characteristics are investigated and the relationship between the accident-proneness prospects and their results are analyzed assuming that children's health is expected to have an effect on their safety. The findings of the study are as follows: 1. The accident-proneness prospect (for the living safety) has significant difference in sleeping habits and physically weak conditions(p<0.05). 2. The accident-proneness prospect (for the traffic safety) has no significant difference in accordance with the children's health condition. 3. Children's reasoning power has no significant difference in accordance with their health condition. 4. Children's movement speed non-significantly differs in accordance with their health condition. 5. Children's movement stability has a significant difference in accordance with their health conditions such as history of mild disease(p<0.05) and physical work capacity(p<0.05). 6. Children's attention power has no significant difference in accordance with their health condition. 7. Children's characteristic activities show a significant difference in accordance with their health history of mild disease(p<0.05). mental health(p<0.05). eating habits(p<0.05) and others (i.e. auditory abnormality and skin desease)(p<0.05). 8. General assessment of the APP test has no significant difference in accordance with their health condition. 9. The health conditions are a significant difference in the history of mild disease in accordance with sex(p<0.05) and whole family members(p<0.001). Also there are shown significant differences. in accordance with sex(p<0.05). in physical work capacity(p<0.05). Eye sight, blood circulation and skin condition show significant differences in accordance with residence(p<0.05) and whole family members(p<0.01). and the condition of eating habits appeared significant in accordance with age(p<0.05). Also, sleeping habits and physically weak conditions shows significant differences in accordance with age(p<0.001) and housing pattern(p<0.01), and others (i.e. auditory abnormality and skin desease) show significant differences in accordance with residence (p<0.001).