• Journal of the Korean School Mathematics Society
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• v.10 no.1
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• pp.113-127
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• 2007

This study explored the possibility of building a statistical model predicting difficulty of mathematics test items through the analysis of nation-wide scholastic ability test results for the past 5 years. Multiple linear regression analysis was conducted in predicting difficulty of mathematics test items. We adopted three major areas for independent variables: the content area, the behavior area, and the test item format area, each of which was categorized into more detailed sub-areas. For the dependent variable, the proportion of correct answer was used to represent the item difficulty. Statistically significant independent variables were included in the regression model based on the stepwise selection method. Several important factors affecting difficulty of mathematics test items for each area were identified. R-squares for the final regression model were fairly high, implying that the regression equation can be used to predict difficulty of test items at an acceptable level. Lastly, the regression model was cross-validated using independently collected data. We believe that this study will provide basic but very critical information for predicting the proportion of correct answer by showing the factors that should be considered for developing mathematics test items for the college entrance examination or high school classroom test.

• The Journal of Korean Physical Therapy
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• v.26 no.2
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• pp.82-89
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• 2014

Purpose: This study was conducted in order to develop an instrument for the Korean Osteoarthritis Impact Measurement scale (KAIMS) in hip and knee osteoarthritis patients. Methods: A sample of 426 subjects was recruited in Ulsan metropolitan city (six hospitals and clinics) and Andong city (five hospitals and clinics) from June 2010 to May 2011. Item internal consistency and item discriminant validity were analyzed on the item-level, and floor (%) and ceiling (%) effect were analyzed on the scale-level. Exploratory factor analysis was performed for construction of items in the KAIMS instrument; confirmative factor analysis was also performed to test the fit of the model. Results: In 426 respondents, age was 64.3 years. The reliability for r coefficient 0.90 (mobility) and 0.89 (pain and stiffness) (Cronbach's alpha 0.95, 0.95 respectively) was high in the test-retest, and there was no significant difference in paired t-test (p>0.05). Item internal consistency (${\alpha}=0.92$, ${\alpha}=0.87$ respectively) was also high. It was constructed of two factors (mobility, pain and stiffness dimension) and nine items in explanatory factor analysis; results of confirmatory factor analysis also indicated that the dimensional structure model was fitted well in the test of model fit (${\chi}^2=83.83$, df=26, p=0.000; RMR=0.05; GFI=0.96; AGFI=0.83). Conclusion: In conclusion, the results of this study showed that the KAIMS that was developed was a reliable and valid instrument for measurement of osteoarthritis (OA) patients. We recommend further research for additional development of the instrument on OA in Korea.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.2 no.1
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• pp.138-149
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• 1991

The clinical validity of the Korean version of Child Behavior Checkist(CBCL) as a screening instrument was evaluated through verifying the ability to discriminate clinically referred children from the non referred. The results were as follows ; 1) The mean total social competence score and three subscale scores of the referred children were significantly lower(p<.001) than those of the non referred children. 2) The mean total behavior problem score and several subscale scores of the referred children were significantly higher(p<.001) than those of the non referred children 3) Through assessing each item, only one item for boys and five item for girls of twenty-three social competence items had less discriminating ability. 4) Of one hundred eighteen behavior problem items, ten items for boys and fourteen items for girls showed insignificant differences between two groups. The results were discussed in terms of the reason why those items had less discriminating power in korea than in the U.S., And the partial modification of the Korean version of CBCL was recommended.

• The Journal of Korean Physical Therapy
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• v.21 no.3
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• pp.103-108
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• 2009

Purpose: The purpose of this survey was to assess the satisfaction of patients suffering from musculoskeletal pain with physical therapy (PT) in Busan, Daegu, and Kyeongsang provinces using a Korean-language version of the patient satisfaction questionnaire with physical therapy service (PSPT). Methods: A total of 654 patients, having PT for their musculoskeletal pains, participated. Consenting subjects completed a 20-item PSPT on their $6^{th}$ or last treatment day. Simple descriptive statistics were used for respondent characteristics, and mean of satisfaction score in each item. Regression analysis was performed on each item of the questionnaire. Results: 654 subjects responded during or after their PT services. 297 (45.5%) of them were male and the most common site of pain was the spine. The mean of each item score (1-5) ranged from 2.14 for "my therapist did not listen to my concerns" to 4.12 for "my therapist treated me respectfully". Receptionist's attitude, registration process, service time of the hospital, and answer to the patient's questions greatly affected the general satisfaction of the respondents. Conclusion: The results showed high levels of satisfaction to the general process for obtaining treatment as well as the therapist's attitudes toward their patients. They may provide valuable patients' feedback regarding PT service for musculoskeletal pain. Therefore, it may be used by physical therapists to improve future patient experiences with a view to improving the patient's attendance and compliance with the PT service protocols for patients suffering from musculoskeletal pain.

• Korean Journal of Applied Biomechanics
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• v.30 no.3
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• pp.255-264
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• 2020

Objective: The purpose of this study is to develop new balance evaluation index that can discriminate fall risk factors and provide effective interventions for healthy elderly. In order to conduct this study, the balance assessment tools (TUG, mCTSIB, OLST, FRT and BBS) currently used in clinic were re-evaluated using biomechanical analysis. Method: The participants were healthy elderly people over 65 years old, n=26, age: 69.31±3.13 years; height: 154.00±4.12 cm, body weight: 56.13±6.04 kg. The variables are length of CoM-BoS, length of CoP-BoS, range of CoP, mean distance of CoP, mean frequency of CoP, root mean square of CoP, joint angle, ASM (%SL), CoP-CoM angle. Results: As a result of this study, the following items were included in the list of new balance evaluation index for the healthy elderly, showing differences in the biomechanical evaluation based on the clinical evaluation (Inclusion list: TUG, OLST, 8th assessment item of BBS (reaching forward with outstretched arm), 11th item (turning 360 degrees), 13th item (standing with one foot in front), 14th item (standing on one foot)). Conclusion: Based on the results, the new balance evaluation index for the healthy elderly determined through this study can be used to prevent the fall by evaluating the balance ability in various situations that can be experienced in the normal daily life of the healthy elderly.

• Journal of the Korean Home Economics Association
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• v.45 no.8
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• pp.105-126
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• 2007

The aims of this study were to examine the actual conditions surrounding the purchasing of online game items and Internet cyberspace items by adolescents the propensity of adolescents to consume these items, to determine the difference in the propensity for high and low consumption of these items among adolescents, and to investigate the characteristics of the adolescents who show a high propensity for the consumption of Internet items. The data for this study were collected from 483 adolescent consumers who were middle school and high school students in the city of Bucheon in Gyeonggi Province. The statistical methods used for the data analysis included frequency, percentage, standard deviation, t-test, and one-way ANOVA. The results of the present study can be summarized as follows. The majority(79.5%) of the students surveyed had had the experience of purchasing items. Most students(67.5%) had a rare frequency of buying ($1{\sim}2$ times in a period of 6 months or less). Nearly half (47.9%) of the students spent less than 1000 won per month on the item(s) purchased. Most of the students purchased items with their parents' permission, but 26.6% of the students bought the items without their parents' permission. Most of the characteristics of the items purchased, such as the major item purchased, payment method, amount purchased per month, average amount spent per buying experience, and whether or not they had their parents' permission differed according to gender, grade level, record, and monthly allowance. The level of propensity to consume the items was not high. The propensity of imitation consumption (1.96) was lower than that of impulsive consumption (2.38) and conspicuous consumption (2.45). Most of the buying characteristics, including the major item purchased, payment method, amount purchased per month, average amount spent per buying experience, parents' permission, grade level, and monthly allowance were different between the high and low propensity for consumption groups.

• Journal of Korea Multimedia Society
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• v.13 no.1
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• pp.153-160
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• 2010

The main goal of general Online games is that the game user gain a high level character. If you want to grow up your character so fast, you need to have proper items. But sometimes users get items in the game that are not fit for the character. For the reason, game's users exchange these items each other. But such a function that serviced in the game is very restricted. To improve dealing function, it is necessary to support various method in the game such as Internet item dealing sites. By providing various service like as auction system service not the general dealing method, it is convenient for game users to deal with their own items. In this paper, by analyzing both function of internet item dealing site and function of item dealing used some domestic on-line game, we are propose the design method of auction type e-commerce that has the each advantage. Using the our proposed method, users can get information rapidly who want to deal with their own items, and deal with items through various functions.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 1998.11a
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• pp.172-177
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• 1998

For making high-functional illumination environment and pleasantness to human beings, it is needed to analyze optical characteristics from lightsource as well as to analyze and examine emotional characteristics which respond to optical characteristics systematically. Also, it is Possible to classify lightsource according to function and use based on optical and emotional characteristics systematically and these results can be applied to practical data for professional illumination design field. The aim of this study is to develop technique for evaluating sensibility as well as to accumulate sensibility database through measuring and evaluating emotional reaction to optical characteristics from lightsource. Final aim of this study is to develop simulation and evaluation technique for interior illumination environment, the outline of this paper : 1) operating simulator for various illumination environment 2) developing evaluation methodology for evaluating illumination environment 3) preparing sensibility index through evaluation and analysis The process of this study is as follows. 1) Developing optical evaluation item of lightsource 2) Developing emotional evaluation item of lightsource 3). Analyzing, correlation between optical evaluation item and emotional eveluation item 4) Classifying and selecting object for evaluation 5) Optical measuring and evaluating for lightsource 6) Operating Simulator for illumination environment 7) Emontional measuring and evaluating lightsource and color 8) Developing estimative formula and sensibility index of emotional reaction The results of this study are as follows. 1. Simulator is operated for various illumination environment, and it is proved to be applicable to actual environment. 2. Evaluation and Analysis Techniques is developed for emotional measurement about illumination environment. 3. Estimative formula and sensibility index are prepared, which can estimate the characteristic of lightsource and emotional reaction to interior color

• Journal of The Korean Society of Integrative Medicine
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• v.7 no.4
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• pp.203-212
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• 2019

Purpose : The purpose of this study was to determine the correlation between the self-esteem of health science college students and their empathy for others. Methods : A survey was administered to 448 students from the five departments of health science (Occupational Therapy, Physical Therapy, Dental Hygienics, Nursing, and Medical Administration) at a college located in Busan, South Korea, between September 28 and November 2, 2017. To measure their self-esteem and empathy for others, the Self-esteem Scale and the Korean Empathy Quotient (K-EQ) Scale were used. Results : There were statistically significant differences in social skills as a sub-item of empathy skills based on age and department, as well as in emotion as a sub-item of empathy skills based on sex. Self-esteem and all the items of empathy showed meaningful differences based on monthly expenses, while self-esteem and cognition as a sub-item of empathy skills displayed significant differences based on source of monthly income. Noteworthy differences were also found in self-esteem and emotion as a sub-item of empathy skills based on satisfaction with current school life. Self-esteem and empathy skills were shown to have a positive correlation. Conclusion : According to the results of this study, self-esteem and empathy skills had a statistically significant correlation. Further research is needed to investigate how health science college students can improve their understanding of themselves and their empathy for others.

• Journal of Fashion Business
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• v.24 no.2
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• pp.1-16
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• 2020

Hijab as a symbol of women's oppression due to the opening and reform of Islamic State group, is becoming more diverse as younger generation begins to dress more freely than ever before, spreading the perception that it is a fashion item. In response, this research conducted a theoretical review about the history of hijab, various forms of hijab, and characteristics of hijab using relevant literature, media reports, and fashion media articles. As an empirical study, image-oriented photo data shared by Tehran Street Fashion from 2015 to November 2019 were analyzed separately by fashion majors into color, pattern, and hijab-making forms. According to the analysis, six different fashion images were categorized as romantic feminine, modern chic, natural elegant, classic formal, sporty casual and gorgeous ethnic. For Muslim women in the past, hijab was worn as a repressive and closed sense by the religious system. However, in modern times, it is a way to express one's style and ideas as a fashion item. It is also and a means to express one's thoughts and beliefs. Through aesthetic consideration of Hijab as a fashion item, it was found that it was a medium for freedom of expression and a medium for beauty and individuality.