• Korean Journal of Applied Biomechanics
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• v.30 no.3
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• pp.235-245
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• 2020

Objective: The purpose of this study was to investigate the differences between visual search, eye fixation positions, and eye fixation position on whole body regions while judging final matches of dance sports. Method: Ten experienced judges (male 6, female 4) and six dance sports couples belonging to the top Korean leagues in the Korea Dance sports Federation were participated. Wearable eye trackers were used for data collection. The independent t-test was conducted to examine the effects of gender, and the two-way ANOVA was conducted to examine the effects of judges' gender, dance event, and ranking. Results: It was found that the movement of male contestants was preferred, and the gaze fixation was high for torso movements in the judges' evaluations. Moreover, attention was focused on the upper body rather than the lower body; this was maintained for about seven seconds to evaluate each couple. Conclusion: This find was the relative comparison between the two couples was the determining factor in winning or losing.

• Journal of the Korean Home Economics Association
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• v.43 no.7 s.209
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• pp.37-51
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• 2005

The purpose of this study was to determine the level of caregiving behaviors of adult children and the main factors influencing the caregiving behaviors of adult children. This research was based on a survey conducted with 620 adults, from 30 to 59 years old, living in the Seoul metropolitan area, with at least one living parent. Statistical analysis was carried out using SPSS/WIN including frequencies, t-test, one-way ANOVA and regression analysis. no results were as follows. First, the level of caregiving behaviors of adult children varied with background variables, such as birth ranking and job for the children-related variables, and age of mother, income level and type of living for the parents-related variables. Second, the level of caregiving behaviors of adult children varied with the degree of emotional solidarity between the adult children and their parents. Third, the caregiving behaviors were significantly different according to gender as gender played an important role in differentiating the motives for caregiving behaviors.

• Journal of the Korea Fashion and Costume Design Association
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• v.12 no.4
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• pp.159-171
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• 2010

The purposes of this study is to find middle school student's application of Clothing & Textiles Section in Technology-Home Economics. The samples are 298 middles school students in Kangneung. For the statistics analysis of this study, frequency, mean, Cronbach's ${\alpha}$ coefficient, one way ANOVA, t-test were calculated. The results of this study are summarized follows; 1) Middle school student's application of Clothing & Textiles Section is relatively low. Middle school student's need of Clothing & Textiles Section and recognition of Technology-Home Economic are relatively high. But Middle school student's preference of Technology-Home Economic is relatively low. 2) Variables that affect middle school student's recognition of Technology-Home Economic are number of sibling and sibling ranking. 3) Variables that affect middle school student's need of Clothing & Textiles Section are recognition and preference of Technology-Home Economic. 4) Variables that affect middle school student's application of Clothing & Textiles Section are recognition and preference of Technology-Home Economic and need of Clothing & Textiles Section.

• Transactions of Materials Processing
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• v.26 no.6
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• pp.356-364
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• 2017

In this study, submerged arc cladded Fe-Cr-Ni-Mo-CuWNbV-C stainless steels containing various Cr contents between 11.2 wt.% and 16.7 wt.% were prepared with fixed C content at about 0.14 wt.%. Using these alloys, changes in microstructure, tensile property, and thermal fatigue property were investigated. Phase fraction of delta-ferrite was increased gradually with increasing Cr content. However, tensile strength, hardness, and thermal fatigue resistance appeared to be decreased. When the microstructure of delta-ferrite was observed, it was revealed that the mesh structure retained up to about 15% Cr content. Although thermal fatigue resistance was almost the same for Cr contents between 11.0 and 14.5 wt.%, it was significantly decreased at higher Cr contents. This was evident from mean value of crack lengths of 10 largest ones. Evaluation of thermal fatigue resistance on alloys with various Cr contents revealed the following important results. First, the reproducibility of ranking test was excellent regardless of the number of cycles. Second, thermal fatigue resistance was increased in proportion to true tensile fracture strength values of overlay materials. Finally, the number of thermal fatigue cracks per unit length was increased with increasing true tensile fracture strength.

• Journal of the Korea Fashion and Costume Design Association
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• v.9 no.3
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• pp.191-203
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• 2007

The purpose of this study was to present a making method of jeans pattern with high fitness after deriving the appropriate shrinkage rate by material and washing process. According to the result of the exterior evaluation of test jeans, all 6 jeans were rated high with scores close to 3.5. Following the evaluation of satisfaction of usage by physical movement, the highest ranking was in the order of walking with normal steps, back bending $90^{\circ}$, chair sitting, climbing stairs and squatting. The shrinkage rate by physical area showed the highest score in the order of pants length, waist circumference, thigh circumference, knee circumference, hem circumference, hips circumference. In addition, the shrinkage rate was higher in warp direction than weft direction after washing finishing. As for the result of addition and reduction of pattern measurements by parts of jeans, waist circumference was $3.1{\sim}5.1cm$, hips circumference was $-1.2{\sim}4.2cm$, thigh circumference was $-0.9{\sim}3.1cm$ and pants length was $3.4{\sim}6.1cm$. That is, this results showed a wide range of addition and reduction according to material and washing finishing.

• Journal of Welding and Joining
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• v.16 no.3
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• pp.111-120
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• 1998

To predict and evaluate metallurgical and mechanical behavior of th welds, it is essential to understand solidification behavior and microstructural evolution experienced in the welds, neither of which follows the equilibrium phase diagram because of rapid heating and cooling conditions. Metallurgical phenomena in austenitic stainless steel fusion welds, types 304, 309S, 316L, 321 and 304N, were investigated in this study. Autogenous GTA welding was performed on weld coupons, and primary solidification mode and phase distribution were investigated from the welds. Varestraint test was employed to evaluate solidification cracking susceptibilities of the alloys. GTA weld fusion zones in type 304, 321 and 304N stainless steels experienced primary ferrite solidification while those in type 309S primary austenite solidification. Type 316L exhibited a mixed type of primary ferrite and primary austenite solidification. The primary solidification mode strongly depended on $Cr_{eq}/Ni_{eq}$ ratio. In terms of solidification cracking susceptibility, type 309S that solidified as primary austenite exhibited high cracking susceptibility while the alloys experienced primary ferrite solidification showed low cracking susceptibility. The relative ranking in solidification cracking susceptibility was type 304=type 304N < type 321 < type 316L < type 309S.

• Journal of Information Processing Systems
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• v.13 no.5
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• pp.1213-1228
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• 2017

The pitch tracking of music has been researched for several decades. Several possible improvements are available for creating a good t-distribution, using the instantaneous robust algorithm for pitch tracking framework to perfectly detect pitch. This article shows how to detect the pitch of music utilizing an improved detection method which applies a statistical method; this approach uses a pitch track, or a sequence of frequency bin numbers. This sequence is used to create an index that offers useful features for comparing similar songs. The pitch frequency spectrum is extracted using a modified instantaneous robust algorithm for pitch tracking (IRAPT) as a base combined with the statistical method. The pitch detection algorithm was implemented, and the percentage of performance matching in Thai classical music was assessed in order to test the accuracy of the algorithm. We used the longest common subsequence to compare the similarities in pitch sequence alignments in the music. The experimental results of this research show that the accuracy of retrieval of Thai classical music using the t-distribution of instantaneous robust algorithm for pitch tracking (t-IRAPT) is 99.01%, and is in the top five ranking, with the shortest query sample being five seconds long.

• Women's Health Nursing
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• v.17 no.1
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• pp.31-38
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• 2011

Purpose: The purpose of this study was to investigate the relationships among marital satisfaction, spousal support and practice of Taekyo among pregnant women. Methods: This study was conducted by the use of questionnaire surveys with two hundred and eighty-three pregnant women at several hospitals located in Gyeonggi province and Daejeon city from October 2008 to April 2009. Contents of questionnaire included marital satisfaction, spousal support and practice of Taekyo. Descriptive statistics, t-test, ANOVA, Pearson correlation, and stepwise multiple regression were conducted for data analysis using SPSS/WIN 17.0 program. Results: Degree of marital satisfaction, spousal support, and practice of Taekyo showed the high ranking among pregnant women. There was a significant difference in order of fetus, need for Taekyo, and time in Taekyo. There was a positive relationship between marital satisfaction, spousal support, and practice of Taekyo. The significant factors influencing the practice of Taekyo was connected with marital satisfaction, order of fetus and time in Taekyo. The total explanatory range was 29.3%. Conclusion: There is a need for multidimensional strategy in improving marital satisfaction. This study can be used as a foundation for maternal nursing education program and can be developed for practice of Taekyo.

• Journal of Engineering Education Research
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• v.22 no.5
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• pp.56-62
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• 2019

This paper suggests the necessity of design education to engineering majors through qualitative research on the characteristics of intelligent artifacts. Robot cleaner is one of intelligent artificial objects that can approach people's life without awkwardness. How do people think of robot cleaners and define their personality, these days? In this experiment, subjects use and observe four different robot cleaners that have different appearances, behaviors and sounds in an experimental setup where is similar to actual use environment. We measure subjects' preferences and assessments for four different robot cleaners' personality. The test subjects were 11 designers who frequently collaborated with engineers and were able to express and express opinions about products. Experimental results showed that robot cleaners with the highest scores in appearance, behavior, and sound had the highest preference. In contrast, robot cleaners with low scores in three factors showed different results in the preference ranking.

• Journal of the Korea Society of Computer and Information
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• v.24 no.8
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• pp.45-50
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• 2019

Oculus Rift is the most universal VR (virtual Reality) headset for gamers and FPS (First Person Shooting) is the most suitable game genre to play with VR. Using VR can increase the player's sense of reality and make them feel as though they are in direct contact with the enemy while battling. The suggested VR game is a first person game where the player must defend a specific target against the surging enemy all within the time limit. Many objects will need to be used in this method. Object pooling will be used in order to manage all the numerous objects. When an object is repeatedly created and deleted it typically overwhelms the memory. To resolve this issue the game initially summons the object at the beginning of the scene and afterwards only uses the object when needed, lessening the burden on the memory. A ranking system is implemented to keep the game records in order to stimulate a competitive spirit between the players, and the game has received positive response during test play among college students in their 20s.