• 제어로봇시스템학회논문지
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• 제15권4호
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• pp.379-384
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• 2009

A human gaze detection and tracing method is importantly required for HMI(Human-Machine-Interface) like a Human-Serving robot. This paper proposed a novel three-dimension (3D) human gaze estimation method by using a face recognition, an orientation estimation and SVMs (Support Vector Machines). 2,400 images with the pan orientation range of $-90^{\circ}{\sim}90^{\circ}$ and tilt range of $-40^{\circ}{\sim}70^{\circ}$ with intervals unit of $10^{\circ}$ were used. A stereo camera was used to obtain the global coordinate of the center point between eyes and Gabor filter banks of horizontal and vertical orientation with 4 scales were used to extract the facial features. The experiment result shows that the error rate of proposed method is much improved than Liddell's.

• 한국세라믹학회지
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• 제30권12호
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• pp.1066-1070
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• 1993

When looked upon as a polycrystalline, ceramics have two basic differences from a single crystal. One is that there exist grain boundaries, the other is that the crystal axes of each small crystal are arranged in random directions. But the crystal axes fo small crystals which compose ceramics may be made to have the tendency of being arranged in a specific direction. This is called that the crystal axes are oriented. The degree of the direction arrangement of the crystal axes is called orientation. In order to orient the crystal axes effectively, the fiberous barium titanates were made through KDC method and the ion exchange method. And then they were arranged through pressing, doctor blade, and syringe. As the result of Lotgering evaluation, the sample oriented through syringe showed the highest orientation. After sintering, though the most particles that had been fiberous shaped became global shape viewed through SEM, the orientation of the crystals was reinforced by means of sintering.

• Journal of Information Technology Applications and Management
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• 제21권2호
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• pp.149-165
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• 2014

This paper has studied whether cultural factors have an effect on privacy concern of Internet users in Korea and China. The result has shown that power distance, individualism, uncertainty avoidance, and long-term orientation are positively related to privacy concern, while masculinity is negatively related to privacy concern. This study has also found some similarities and differences between the two countries. First, privacy concern of Korean Internet users is significantly higher than that of Chinese users. Second, individualism and uncertainty avoidance significantly affect privacy concern in both Korea and China, although individualism in Korea has stronger effect than that in China. Third, long term orientation has a significant effect in only Korea while power distance is significant only in China. These results suggest that an online company doing businesses in multiple countries should have country-specific privacy policies to deal with the privacy concern of Internet users in different countries.

• 벤처창업연구
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• 제16권4호
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• pp.59-70
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• 2021

청년실업의 문제는 이미 국내외에서 매우 심각한 사회적인 문제이며, 청년실업의 문제를 해결할 수 있는 방안의 한가지인 창업은 여러 방면의 관심 속에 연구되어오고 있다. 창업은 경제위기를 극복할 뿐만 아니라 4차 산업혁명 시대의 혁신 인재를 육성하는 역할을 한다. 이러한 이유로 대학생들의 창업활성화를 위한 연구는 매우 중요하다고 할 수 있다. 본 연구는 대학생들의 경제적 창업동기와 비경제적 창업동기에 미치는 영향을 확인하기 위하여 개인 기업가지향성과 목표지향성이 경제적 창업동기와 비경제적 창업동기에 어떠한 영향을 주는지 살펴보고자 한다. 또한 개인 기업가지향성과 창업동기(경제적, 비경제적)의 관계에서 목표지향성이 매개효과가 있는지 살펴보고자 한다. 연구결과 첫째, 대학생의 개인 기업가지향성은 목표지향성에 정(+)의 영향을 미치는 것이 확인되었다. 둘째, 대학생의 목표지향성은 경제적 창업동기에 정(+)의 영향을 미치며, 비경제적 창업동기에 정(+)의 영향을 미치는 것 확인되었다. 셋째, 대학생의 개인 기업가지향성은 경제적 창업동기에 정(+)의 영향을 미치며, 비경제적 창업동기에 정(+)의 영향을 미미치는 것을 확인하였다. 넷째, 대학생의 목표지향성은 개인 기업가지향성과 경제적 창업동기 관계에서 매개 효과가 있으며, 또한 개인 기업가지향성과 비경제적 창업동기 관계에서 매개 효과가 있음을 확인하였다.

• 제어로봇시스템학회논문지
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• 제14권5호
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• pp.483-488
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• 2008

An active omni-directional raging system using an omni-directional vision with structured light has many advantages compared to the conventional ranging systems: robustness against external illumination noise because of the laser structured light and computational efficiency because of one shot image containing $360^{\circ}$ environment information from the omni-directional vision. The omni-directional range data represents a local distance map at a certain position in the workspace. In this paper, we propose a matching algorithm for the local distance map with the given global map database, thereby to localize a mobile robot in the global workspace. Since the global map database consists of line segments representing edges of environment object in general, the matching algorithm is based on relative position and orientation of line segments in the local map and the global map. The effectiveness of the proposed omni-directional ranging system and the matching are verified through experiments.

• 한국의류산업학회지
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• 제20권3호
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• pp.293-303
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• 2018

Since 2009, consumers could access a new shopping channel called 'mobile shopping' with the generalization of smartphones. Mobile shopping (based on wireless communication technology), emphasizes convenience differentiated from internet shopping. A recent report introduced fashion products as powerful global drivers for mobile shopping sales. Korea and China have the highest percentage of consumer mobile shopping experiences compared to other countries. This study investigates the effects of cross-over shopping orientation, perception of app attributes, and flow on app loyalty that compared Korean and Chinese consumers. We obtained 652 usable questionnaires from two local college students; subsequently, data were analyzed by using factor analysis, Cronbach's alpha, and regression analysis using SPSS 21.0 Package. The study results showed that the cross-over shopping orientation affected perception of app attributes that included Review/Information, Design, Response and Product. Product only affected Flow, which reflected a high similarity between Korean and Chinese consumers. However, Korean and Chinese consumers showed remarkable differences in the factors related to app loyalty. Therefore, the results indicate that retailers of fashion products have developed strategies to improve mobile sales and increase the app loyalty of cross-over shopping orientation consumers.

• 한국의류산업학회지
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• 제21권6호
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• pp.743-753
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• 2019

This study investigates differences in demographic characteristics, shopping orientation, perceived risk, and satisfaction after purchase among consumer types. This study classifies consumer types according to their channel transition behaviors between the online and offline channels with a focus on the steps of information research and buying decision in buying decision-making process. The four consumer groups are as follows: off-off type (offline research-offline purchase), on-on type (online research-online purchase), on-off type (online research-offline purchase) and on/off-off type (online and offline research-offline purchase), off-on type (offline research-online purchase) and on/off-on type (online and offline research-online purchase). Data were collected from adults over 20 years old who had bought clothes within one year. The questionnaire was carried out from July, 2019 using a professional internet research panel; in addition, 500 sets of useful data were analyzed by descriptive statistics, factor analysis, reliability analysis, chi-squared test, ANOVA and Duncan-test using SPSS 21.0. The findings showed significant differences among the classified consumer groups for consumer demographics, shopping orientation, perceived risk, and purchase after satisfaction. The results imply that consumers show a variety of channel transition behaviors based on demographic variables, shopping orientation, and perceived risk. Understanding and adapting to consumer purchase behaviors will allow company distribution channels to be effectively managed and eventually increase consumer satisfaction as well as company sales volume.

• Journal of Astronomy and Space Sciences
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• 제18권2호
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• pp.129-136
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• 2001

GPS (Global Positioning System)를 이용한 정밀 응용분야에 있어 위성의 궤도력과 지구자전 상수 (Earth Orientation Parameter, EOP)의 정밀도는 매우 중요한 요소이다. 특히, GPS를 이용한 대기강시 등 신속한 정밀자료처리가 요구되는 응용분야는 실시간 또는 정밀하게 예측된 위성의 궤도력과 EOP를 필요로 한다. 이를 위해 IGS (International GPS Service)는 매일 3시, 15시 (UTC)에 IGU (lGS Ultra Rapid Product)를 생성하여 서비스하고 있다. IGU는 48시간의 정밀 궤도력과 EOP로 구성되어 있는데, 처음 24시간은 관측한 데이터를 처리하여 산출하고 다음 24시간은 예측을 통해서 산출한 값으로 이루어져 있다. 본 논문에서는 독자적인 URP (Ultra Rapid Product)를 산출하기 위한 프로세싱 전략을 수립하고 타당성을 검증하였다. 이를 위해 32개 IGS 관측소의 48시간 관측 자료를 처리하여 URP를 산출하고, 그 결과를 IGS에서 제공하는 여러 정밀 궤도력 및 EOP와 비교하였다.

• 한국의류산업학회지
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• 제22권1호
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• pp.25-37
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• 2020

This study investigates the clothing purchase behavior of active seniors in their 50s and 60s. Differences of clothing purchase behaviors were examined according to gender and the group classified by shopping orientation. Data were collected from September 2 to September 9, 2019 using a professional internet research panel; subsequently, 246 sets of useful data were analyzed by descriptive statistics, factor analysis, reliability analysis, t-test, chi-squared test, ANOVA and Duncan-test using SPSS 21.0. The results of this study were as follows. First, there were significant differences in clothing purchase behavior of purchase frequency, purchase item, purchase price, and purchase channel according to gender; therefore marketers need plan different merchandising and retailing strategies between man's wear and woman's wear. Second. the result of cluster analysis by shopping orientation showed that active seniors were categorized into four groups including 'active shopping pursuit', 'economic/pleasure pursuit', 'convenience/brand pursuit', and 'passive shopping pursuit'. Third, there were significant differences in demographic variables such as gender and occupation according to four categorized groups. In addition, the significant differences of clothing purchase behaviors were verified according to four groups. 'Active shopping pursuit' group was shown to make the best use of offline channels and online channels in information research and product purchase.

• 한국의류학회지
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• 제44권1호
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• pp.141-158
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• 2020

This study examines age differences with respect to consumers' clothing purchase behavior. First, the differences of age groups were investigated according to clothing purchase behavior, which include purchase item, purchase price, purchase channel, information resources, purchase frequency, and monthly clothing expenditures. Second, the differences of segmented groups by age variable were investigated according to clothing purchase behaviors after segmenting consumers by clothing shopping orientation. An on-line survey was conducted from July 2 to July 10, 2019, and 500 data were collected from adults aged 20s to 60s who had bought their own clothes within one year. Data were analyzed by descriptive statistics, factor analysis, reliability analysis, chi-squared test, ANOVA and Duncan-test using SPSS 21.0. This findings showed that there were significant differences in purchase item, purchase price, purchase channel, purchase frequency, and information resources according to age group. As a result of segmentation by shopping orientation, consumers were classified into three groups of high shopping involvement, low shopping involvement, and economic pursuit. In addition, there were partly significant differences in clothing purchase behavior according to classified groups by age variable.