• Transactions of Materials Processing
• /
• v.6 no.5
• /
• pp.416-424
• /
• 1997

In the present study, a contact search and check algorithm for general tool surface described by triangular FE patch is proposed. To improve numerical stability, SEAM element using the linear Coons interpolation has been used. To check the proposed algorithm, both clover cup and L-shape cup deep drawing processes are calculated. The computed results shows that the proposed contact algorithm can be successfully applied for sheet metal forming processes with general shaped tools.

• Smart Media Journal
• /
• v.12 no.1
• /
• pp.77-91
• /
• 2023

Interaction methods and technologies for mutual exploration based on user behavior are evolving variously. Especially, in recent years, with the development of a wide range of sensors, they have developed from contact to non-contact methods. However, developers' senseless definitions of the interaction methods have made the exploration process quite complicated, which rather creates the hassle of users needing to learn the interaction guide defined by the developers before experiencing the exhibition contents. In this context, in order to make visitors smoothly communicate with exhibition contents, a preliminary study on easy interaction for users of various ages is needed, and in particular, research on improving the usability of user interaction is also essential when developing non-contact exhibition contents. So, in this study, a method to reduce the confusion between developers and users was sought by researching non-contact interaction that could be universally interacted with in the field of exhibition contents and proposing behavior designs. First, based on the narrative structure of cultural resources, existing studies were reviewed and the points of interactions as cultural contents were derived. Then the most efficient search process was selected among non-contact behaviors based on hand gestures that allow users to naturally guess and learn interaction methods. Furthermore, on the basis of the meaning of non-linear narrative-based interaction and the analysis results of spatial behavior elements, affordance behavior with high learning effect and efficiency was derived. Through this research process, an action that helps users to understand non-contact interaction naturally in the process of exploring exhibition-type cultural contents and to utilize non-contact interaction in the process of immersion in exhibition contents is proposed as a final model.

• Journal of the Korean Society for Precision Engineering
• /
• v.20 no.12
• /
• pp.148-158
• /
• 2003

In this paper, efficient and accurate contact search algorithm is proposed for the contact problems by the finite element method. A slave node and a maser contact segment is defined using the side of a finite element on the contact surface. The specific goal is to develop techniques of reducing the nonsmoothness of the contact interactions arising from the finite element discretization of the contact surface. Contact detection is accomplished by monitoring the territory of the slave nodes throughout the calculation for possible penetration of a master surface. To establish the validity of the proposed algorithm, some different process and geometries examples were simulated. Efforts are focused on the error rate that is based on the penetrated area through the simulations fur large deformation with contact surface between deformable bodies. A proposed algorithm offers improvements in contact detection from the simulation results.

• The Journal of the Korea Contents Association
• /
• v.16 no.9
• /
• pp.667-678
• /
• 2016

National preference enables a nation to achieve more advantageous position regarding international relations. Considering this benefit, the purpose of this study is to explore determinants of national preference between Korean and Japanese college students. To pursue this aim, two versions (translated to Korean and Japanese) of survey were conducted in Korea and Japan in 2015. A total of 370 (206 of Koreans and 164 of Japanese) college students were participated in the survey. Specifically, participants were asked to respond perceptions toward multiculturalism, international experiences, and consumption of media contents. Further, participants were asked to describe their knowledge and perception toward cultural contents of partnered country via open-ended questions. The results implies that Japanese music and books are significant determinants among Korean students in developing national preference toward Japan whereas Koran drama is more an effective factor among Japanese students to build national preference toward Korea. Based on the result, theoretical and practical implications were discussed.

• Journal of the korean Society of Automotive Engineers
• /
• v.18 no.4
• /
• pp.67-87
• /
• 1996

본 연구에서는 차체의 충돌해석 및 모델링을 위하여 판/쉘 요소의 자동생성 모듈을 개발하고 재료의 변형특성 모델링 모듈 및 접촉처리 모듈을 개발하였다. 충돌해석용 전처리기능으로는 평면, 실린더 곡면, B-스플라인 곡면 및 블렌딩 (blending) 곡면상에서의 사각형 요소망 자동생성 기법과 프로그램을 개발하였다. 또한 차체를 구성하고 있는 여러가지 재료들의 변형거동을 모델링하여 개발중인 충돌해석전용프로그램인 Autocrash의 모듈로서 완성하였다. 이들은 변형률속도의 영향이 고려된 탄소성 재료, 강체 재료, 포옴 재료 및 이방성 재료등으로 정면충돌 해석 및 측면충돌 해석에 필요하다. 한편 접촉처리 모듈에서 접촉탐색법으로는 주종탐색법과 HITA 알고리즘을 병행하여 사용할 수 있도록 프로그래밍하였으며, 불침투 조건의 처리는 벌칙함 수법을 이용하였다.

• Annual Conference on Human and Language Technology
• /
• 1994.11a
• /
• pp.201-206
• /
• 1994

문서 인식 시스템의 성능을 저하시키는 가장 큰 원인 중의 하나로 문자 분할 오류를 들 수 있는데 보다 우수한 성능의 문서 인식 시스템 개발을 위해서는 정확한 문자 분할 방법이 절실히 요구된다. 기존의 문자 분할에 관한 연구들은 이진 영상을 대상으로 함으로써 접촉되거나 겹치는 문자의 경계 부분에서 문자 분할에 유용한 정보들을 잃어 문자 분할 오류를 초래할 수 있다. 하지만 명도 영상을 분석해 보면 문자의 접촉 부분에서 주로 나타나는 지형적 특징이 있으며, 문자 경계에서 명도값이 변하는 것을 관찰할 수 있는데 이와같은 명도 영상의 정보를 사용하면 보다 효과적으로 문자를 분할할 수 있을 것으로 판단된다. 본 연구에서는 이러한 점에 착안하여 명도 영상으로부터 지형적 특징을 추출하고 다단계 그래프 탐색 방법을 이용하여 명도값을 추적함으로써 비선형 문자 경계를 찾는 새로운 문자 분할 방법을 제안한다. 제안된 방법은 명도 문자열 영상을 입력으로 받아 명도 영상의 투영값과 명도 영상으로부터 추출된 지형적 특성을 이용하여 문자 분할 영역을 결정하고 문자 분할 영역내에서 다단계 그래프 탐색에 의한 비선형 문자 분할 경로를 찾는다. 그리고 문자 인식기와 결항하여 최종 문자 분할 위치를 확정하는 인식 결과를 이용한 문자 분할을 수행함으로써 문자 분할 위치 및 문자 인식 결과를 확정한다. 다양한 문서에 대한 실험 결과 제안된 방법이 이진 정보만을 사용하는 방법보다 접촉 혹은 겹친 문자 분할에 매우 효과적임을 알 수 있었다.

• Proceedings of the Korean Society for Technology of Plasticity Conference
• /
• 1997.03a
• /
• pp.121-124
• /
• 1997

In the present study, a general tool surface contac search ad check algorithm is proposed. A general tool surface is described by triangular FE mesh. To check a proposed algorithm, clover cup and L-shape cup deep drawing processes are calculated. The elastic-plastic FEM using SEAM (Shear Energy Augmented Membrane) element is adapted for numerical stability.

• Korean Business Review
• /
• v.19 no.1
• /
• pp.193-221
• /
• 2006

Customer Contact, defined as "the extent of interpersonal interaction between customer and service provider", is recognized as an important contributor to the perception of service quality, which in turn brings positive impacts on customer satisfaction, customer retention and loyalty especially in service contexts. The major purposes of this study are to explore the dimensionality of customer contact construct, to access the influences of customer contact dimensions on service quality dimensions, and to evaluate the relative importance of customer contact dimensions on service quality. Data from 388 customers of hotels at youngdong area in Kangwon-do were analyzed with major findings and their implications for service companies including hotels are as follows. First of all, the results of factor analysis show that customer contact is constructed with two dimensions, namely communication time and contact proximity. Secondly, overall customer contact is found to have positive effects on customers' perception of overall service quality and each dimension of customer contact has significant effects on overall service quality. Third, contact proximity dimension has relatively more important contributors than communication time has on overall service quality and four dimensions of service quality.

• Journal of the Korean Society for information Management
• /
• v.29 no.2
• /
• pp.93-112
• /
• 2012

This study focuses on the characteristics of information seeking behavior through the casual interactions which are regular contacts with others as information sources in the context of ELIS. Qualitative data were gathered using semi-structured one-to-one interviews with 9 wild-goose mothers in order to investigate the casual interactions. We identified information needs, patterns and characteristics of information seeking behavior through the casual interactions and the major interpretative repertoires.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
• /
• v.6 no.4
• /
• pp.39-57
• /
• 2011

In this study, entrepreneurship opportunities, get in anywhere, in any situation, whether in respect to entrepreneurship through empirical research is to analyze. In addition, young entrepreneurs and entrepreneurship opportunities to target the source and a realistic opportunity to investigate the nature of the search in terms of effective support for young entrepreneurs and operational plans to seek the help. Entrepreneurship opportunities of the origins of the existing studies individually being taken were young entrepreneurs and selected for this study the national and international literature base, and objectives of the study to achieve the city "Young Entrepreneurs 1000 Project" participants, survey through the empirical foundation of their opportunities and entrepreneurship opportunities origins analyzed the relationship between sources. Source of entrepreneurship opportunities in the establishment will include the nature of existing research (intentional / unintentional), business opportunities generated background (source), business opportunity lead, business opportunity lead contact situation (the nature of chance encounters), the business idea was dealt with using here, a new source of opportunity factor established by adding the capital adequacy ratio of capital has been studied. Also 10 years ago by byeong-ju, Jo. entrepreneurship opportunities in Korea for the first time research on the relationship between the source after source of opportunities than in previous research literature on factors leading to the establishment an opportunity to add a set of relationships between sources were analyzed.