• The Journal of Advanced Prosthodontics
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• v.14 no.2
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• pp.88-95
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• 2022

PURPOSE. This study investigated the accuracy of full-arch intraoral scans obtained by various scan strategies with the segmental scan and merge methods. MATERIALS AND METHODS. Seventy intraoral scans (seven scans per group) were performed using 10 scan strategies that differed in the segmental scan (1, 2, or 3 segments) and the scanning motion (straight, zigzag, or combined). The three-dimensional (3D) geometric accuracy of scan images was evaluated by comparison with a reference image in an image analysis software program, in terms of the arch shape discrepancies. Measurement parameters were the intermolar distance, interpremolar distance, anteroposterior distance, and global surface deviation. One-way analysis of variance and Tukey honestly significance difference post hoc tests were carried out to compare differences among the scan strategy groups (α = .05). RESULTS. The linear discrepancy values of intraoral scans were not different among scan strategies performed with the single scan and segmental scan methods. In general, differences in the scan motion did not show different accuracies, except for the intermolar distance measured under the scan conditions of a 3-segmental scan and zigzag motion. The global surface deviations were not different among all scan strategies. CONCLUSION. The segmental scan and merge methods using two scan parts appear to be reliable as an alternative to the single scan method for full-arch intraoral scans. When three segmental scans are involved, the accuracy of complete arch scan can be negatively affected.

• Journal of Korean Society of Transportation
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• v.29 no.2
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• pp.111-121
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• 2011

This paper discusses a method for optimizing the semi-actuated traffic signal control system by adjusting the initial interval according to the number of vehicles waiting for the green light in the actuated phase. We also present a Left-Turn actuated traffic signal control strategy that examines the vehicular noise in the detection area and determines the phase extension and the gap-out. In order to detect the vehicles in real-time, an image detector's Video Image Tracking technology was adopted. A 'Zone in Zone'method was implemented, and the image detection area is segmented into three zones: 1) Zone1 for verifying a vehicles obligatory presence, 2) Zone2 for counting the standby vehicles, and 3) Zone3 for examining the number of vehicles that have passed. The on-site assessment of the Left Turn Actuated Control is carried out using CORSIM, and the results show that the Control Delay decreased by 23.10%, 15.06%, and 4.34% compared to the delays resulted from pre-timed control, semi-actuated control-1 and semi-actuated control-2 traffic signal control systems respectively. The Queue Time also decreased by 36.24%, 20.10% and the Total Time by 14.36%, 7.02% for the same scenario. Which clearly demonstrates the operational efficiency. A sensitivity analysis reveals that the improvement from the propose traffic control strategy tends to increase as the through traffic volume reaches a saturated condition and the left-turn traffic volume decreases.

• Journal of Digital Convergence
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• v.13 no.10
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• pp.235-243
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• 2015

Because modern people are not preferred on the relationship between the brand and there is no reliable target in accordance with the traditions and community collapse, the public stable state of mind in a world that changes rapidly as the exit filled through the psychological emptiness, the relationship between consumers and brands, which this time occurs It will be able to maintain. The purpose of this study is to analyze the mediating effect of the convergence apartment brand relationship quality influence on the relationship between brand loyalty. The results of the analysis are as follows. First, the image of the brand showed a positive (+) effects on loyalty. Second, the image on the brand showed a positive(+) effect on the relationship quality. The third relationship quality brand image and brand loyalty will be mediated. Results in apartment construction companies as a result of the mediating effects influence the quality of the relationship between consumers and the brand image and loyalty and feel to consumers and to enforce effective marketing strategy may also be pursued strategies accordingly.

• The KIPS Transactions:PartB
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• v.8B no.5
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• pp.515-522
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• 2001

Feature-based similarity retrieval become an important research issue in image database systems. The features of image data are useful to discrimination of images. In this paper, we propose the highspeed k-Nearest Neighbor search algorithm based on Self-Organizing Maps. Self-Organizing Map(SOM) provides a mapping from high dimensional feature vectors onto a two-dimensional space. A topological feature map preserves the mutual relations (similarity) in feature spaces of input data, and clusters mutually similar feature vectors in a neighboring nodes. Each node of the topological feature map holds a node vector and similar images that is closest to each node vector. We implemented about k-NN search for similar image classification as to (1) access to topological feature map, and (2) apply to pruning strategy of high speed search. We experiment on the performance of our algorithm using color feature vectors extracted from images. Promising results have been obtained in experiments.

• Journal of KIISE:Databases
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• v.29 no.5
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• pp.358-366
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• 2002

Feature-based similarity retrieval become an important research issue in image database systems. The features of image data are useful to discrimination of images. In this paper, we propose the high speed k-Nearest Neighbor search algorithm based on Self-Organizing Maps. Self-Organizing Maps(SOM) provides a mapping from high dimensional feature vectors onto a two-dimensional space and generates a topological feature map. A topological feature map preserves the mutual relations (similarities) in feature spaces of input data, and clusters mutually similar feature vectors in a neighboring nodes. Therefore each node of the topological feature map holds a node vector and similar images that is closest to each node vector. We implemented a k-NN search for similar image classification as to (1) access to topological feature map, and (2) apply to pruning strategy of high speed search. We experiment on the performance of our algorithm using color feature vectors extracted from images. Promising results have been obtained in experiments.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.7
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• pp.2579-2585
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• 2010

This paper proposes a dynamic human pose tracking method using motion-based search strategy from an image sequence obtained from a monocular camera. The proposed method compares the image features between 3D human model projections and real input images. The method repeats the process until predefined criteria and then estimates 3D human pose that generates the best match. When searching for the best matching configuration with respect to the input image, the search region is determined from the estimated 2D image motion and then search is performed randomly for the body configuration conducted within that search region. As the 2D image motion is highly constrained, this significantly reduces the dimensionality of the feasible space. This strategy have two advantages: the motion estimation leads to an efficient allocation of the search space, and the pose estimation method is adaptive to various kinds of motion.

• The Journal of Korean Academic Society of Nursing Education
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• v.19 no.3
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• pp.384-395
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• 2013

Purpose: This study aimed to investigate the nurse's image and role projected in media and perceived by elementary, middle and high school students. Methods: Data were collected from 544 students in J city, Korea during December 2010 to February 2011. The nurse's image was measured by the instrument developed by Yang (1998). Nursing experiences and nurse's role in media was measured by self-administered questionnaires with 8 questions. Statistical analysis was made with t-test and ANOVA using SPSS win 18.0. Result: The score on personal image was the highest, while the score on social image was the lowest. Elementary school students reported a positive image compared with middle and high school students. Male students had a more positive image than female students. Of various media, students had more experiences related to nurses from TV rather than internet sites, books and newspaper/magazines. Especially, the nurse's role on TV 'seemed to be an assistant of a doctor' was rated the highest by the students. Conclusion: It is necessary to develop a strategy to improve the social image of the nurse through TV by providing correct information on the nurse's role. For this purpose, it is required to consistently monitor and analyze the nurse's role shown in media.

• Journal of the Korean Society of Clothing and Textiles
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• v.35 no.1
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• pp.51-62
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• 2011

This study provides guidelines for the development of Korean fashion cultural products. This study identified adolescents' perception of Korean traditional culture and examined their attitudes towards the fashion cultural products of the Korean image with a focus on their image association of those products. For this study, questionnaire data from 447 adolescents was used for statistical analysis. Adolescents were classified into three groups (apathy group, modernization group, and balanced succession group) according to their perception of Korean traditional culture. There were notable differences among the three groups in the image association with the fashion cultural products of Korean image and their value seeking. A large number of adolescents showed positive attitudes towards products with splendid and decorative images as well as simple and refined images. It is important to maintain a balanced strategy in developing cultural products between modernization and the succession of traditional images in order to magnity the market opportunities for fashion cultural products of the Korean image that focus on adolescents.

• Journal of Fashion Business
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• v.13 no.1
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• pp.1-16
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• 2009

The purpose of this study was to evaluate the clothing image of the Daks and Superior golf wear, and to compare the perceiver's image perception with clothing image in fashion industry, and to find out the differences of image perception between the buying groups and non-buying groups of the Daks and Superior golf wear, for developing the possibility and strategy of the golf wear market for the apparel marketers and manufacturers. In this study, the data obtained from 193 respondents were analyzed by the descriptive statistics, average analysis. The results from the data were as follows : The questionnaire of the image evaluation rated on 7 point Likert-type scales in the 17 features were evaluated by perceivers. The clothing images by 103 respondents(Daks group) were not in accord with the clothing images expressed on homepage of the Daks golf wear. In the other hands, the clothing images by the 90 respondents(Superior group) were in accord with the clothing images expressed on homepage of the golf wear. There were significant differences in evaluating the clothing images between the buying groups and non-buying groups of the Daks and Superior golf wear. The buying groups of the Daks and Superior golf wear perceived the clothing image of the Daks and Superior golf wear more dynamic, positive than the non-buying groups.

• Journal of Fashion Business
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• v.21 no.3
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• pp.29-42
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• 2017

This study investigates the impact of female consumer self-image on pursued fashion style. A survey was carried out among 717 women between the ages of 20 and 60 living in Seoul, Incheon, and Gyeonggi. Analysis was conducted in the following manner: SPSS 18.0 was used to perform an Exploratory Factor Analysis (descriptive analysis, principal factor analysis, Pearson correlation analysis, frequency analysis, and reliability analysis) and AMOS 21.0 was used to carry out a Confirmatory Factor Analysis. Based on a Structure Equation Model, results show that ideal self-image and realistic self-image, which are factors derived from psychology, affect pursued fashion style. By contrast, social self-image - derived from social contexts - does not. Therefore, the female consumers' self-image influences pursued fashion style; this is opposed to the relationship between the realistic self-image and ideal self-image of women, which is more unconscious and self-satisfying. The presented results indicate that we should respond to changes in the fashion industry and develop a deeper understanding of consumer niches to discover the factors that predict purchasing behavior. This knowledge can then be applied to establish market strategies. This study contributes to the literature by producing preliminary data that can help support such strategy formulation in the fashion and clothing industry.