• Journal of the Korean Society for Railway
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• v.12 no.4
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• pp.488-498
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• 2009

The characteristics of intercity rail network are different from those of public transit network in urban area. In this paper, we proposed a new transit assignment model which is generalized form of deterministic assignment model by introducing line selection probability on route section. This model consider various characteristics of intercity rail and simplify network expansion for appling search algorithms developed in road assignment model. We showed the model availability by comparing with existing models using virtual networks. The tests on a small scale network show that this model is superior to existing models for predicting intercity rail demand.

• Proceedings of the IEEK Conference
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• 2005.11a
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• pp.1121-1124
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• 2005

Edge Histogram Descriptor는 image의 edge 분포 정보를 표현하며 방향성을 가지는 Bio Image 검색에 있어 높은 검색 성능을 나타낸다. 그러나 Bio Image의 객체 분포의 특성으로 인해 지역적 edge 분포 비교는 충분한 검색 성능을 보장하지는 못한다. 본 논문에서는 특징 block을 이용한 효율적인 검색 알고리즘을 제안한다. Local histogram으로부터 Global bin을 얻어 image의 대표 방향성을 선정하고 특징 block을 선정한다. 특징 block의 비교는 edge 분포와 함께 주요 객체의 위치 정보를 더하는 효과를 가진다. Bio Image의 검색 실험에서 제안 알고리즘은 향상된 검색 성능을 보여준다. 또한 Bio image 검색을 위한 descriptor 조합 연구에도 적용 가능하여 검색 효율을 기대할 수 있다.

• Journal of the Korea Society of Computer and Information
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• v.11 no.3
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• pp.31-39
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• 2006

This paper presents a novel approach to real-time recognition of 3D environment and objects for various applications such as intelligent robots, intelligent vehicles, intelligent buildings,..etc. First, we establish the three fundamental principles that humans use for recognizing and interacting with the environment. These principles have led to the development of an integrated approach to real-time 3D recognition and modeling, as follows: 1) It starts with a rapid but approximate characterization of the geometric configuration of workspace by identifying global plane features. 2) It quickly recognizes known objects in environment and replaces them by their models in database based on 3D registration. 3) It models the geometric details the geometric details on the fly adaptively to the need of the given task based on a multi-resolution octree representation. SIFT features with their 3D position data, referred to here as stereo-sis SIFT, are used extensively, together with point clouds, for fast extraction of global plane features, for fast recognition of objects, for fast registration of scenes, as well as for overcoming incomplete and noisy nature of point clouds.

• Korean Journal of Social Welfare Studies
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• v.45 no.3
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• pp.209-235
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• 2014

This is an exploratory study that has formulated the formulation and development processes of private social service organizations in the Mokpo region and has drawn the social background in their hidden side and social service-oriented implications. To this end, this study examined the formation and development processes of private social service organizations from 1897 when Mokpo opened its port to the late 1960s when private social services were actively carried out in order to examine the formation and practice processes of social service organizations in Mokpo. The analysis results were as follows. First, the response of private social service organizations to the social desires of Mokpo residents played a major role. Second, even if private organizations played a large role in the formation and development processes of social service, the government's support and Social support was confirmed to be essential for consistent development.

• The Journal of the Korea Contents Association
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• v.22 no.2
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• pp.514-528
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• 2022

This study attempted to understand the characteristics of foreign direct investment by Chinese companies from the perspective of Dunning's OLI paradigm. This development of OFDI by Chinese companies was influenced by the Chinese government's policy, internal factors of the Chinese economy, and the economic and institutional environment of the investment target country. The characteristic of Chinese companies' OFDI is that investment in developed countries is gradually increasing amid regional concentration in Asia. And the proportion of tertiary industries is high, In the meantime, the structure of the secondary industry is changing. In addition, Chinese companies are gradually expanding and showing characteristics by considering the economic and political factors of the investment target country in the selection of overseas investment areas, and then selecting areas with little cultural difference from China's system. This characteristic of OFDI by Chinese companies is basically evaluated to be in line with the OLI paradigm of Dunning. However, the difference is that Chinese companies' OFDI not only advances in overseas investment using the strengths of companies, but also advances in investment to compensate for their shortcomings.

• Proceedings of the Korea Multimedia Society Conference
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• 2001.11a
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• pp.159-164
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• 2001

본 연구에서 설계하고 구현한 뇌 MR영상 처리기에서는 뇌 MR 영상에서 진단에 필요한 정보들을 자동 추출한다. 의료영상 처리 시에는 수집된 의료영상의 특징을 분석하고 특징들을 분류해야 하며 이를 위해서는 효율적인 특징 추출 알고리즘들 필요하다. 뇌 MR 영상 처리기는 영상의 잡음제거나 영상 강화를 위한 전처리기, 영상의 특징을 추출하기 위한 영역분할기와 전역, 지역 특징 추출기로 구성된다. 뇌 MR 영상 특징 추출을 위한 효율적인 의료영상 처리기의 개발 내용을 기술한다.

• The Journal of the Korea Contents Association
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• v.22 no.10
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• pp.225-238
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• 2022

The purpose of this study is to explore the performance characteristics and laws of the symbol mark design of representative regional history museums in China, as well as the preferences of Chinese audiences for the symbol marks of different types of Chinese regional history museums. First, the performance theme, performance type, and type performance tendency of symbol mark modeling of the regional history museums among the top 100 museums in China are analyzed. Second, design laws based on the interrelationship of performance theme types and design performance types are explored. Finally, the questionnaire survey is carried out to explore preference from the aspects of attention, readability, closeness, originality, aesthetics and comprehensiveness. According to the results, the theme of regional history is the most in terms of themes. As for the modeling performance types, the concrete type and the visualization of Chinese character are the most. According to the content characteristics of different performance types, the following model characteristics are formed: expressing the theme of regional history, architecture, and regional natural ecological environment through the concrete type, expressing the concept through the abstract type, and expressing the concept and implying some building features through the geometric abstract figure. The three forms of the literal type, the concrete type expressing architecture, regional history, and regional natural ecological environment theme content, and the abstract type expressing concept are combined with each other, and expressed through the visualization of character, the mixture of abstract and literal type, the mixture of concrete and abstract type, and the mixture of concrete and abstract literal type in the mixture type. According to the survey results, Chinese audiences have higher preference for the concrete type in the symbol mark performance type and the regional historical theme in the performance content.

• Journal of Internet Computing and Services
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• v.5 no.6
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• pp.121-128
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• 2004

This paper proposes a quality evaluation system of a handwriting string written by electronic pen. For the purpose of the system, this paper describes how to retrieve reference data from a database, how to evaluate the quality of a handwiting string using global and local features. Also, it explains how to optionally recognize a grade of a handwriting string at using global and how to diagnose stroke order at using local. The quality can be evaluated in the case of different language between reference and input by the system. Therefore, we expect that the system is very useful not only for training on handwriting but also for learning a language.

• Proceedings of the KAIS Fall Conference
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• 2009.05a
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• pp.40-43
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• 2009

최근 모바일 영상기반 응용 분야에 관한 연구가 활발히 진행되고 있으며 모바일기기로 촬영된 영상에서 문자정보를 추출하고자 하는 많은 연구도 진행되고 있다. 자연이미지로부터 문자정보를 추출을 위한 전단계로 문자영역 검출이 필수적이다. 본 연구는 문자영역의 지역적 에지 및 연결요소 특징을 고려하여 조명 및 복잡한 배경에서도 문자영역을 검출하는 방법을 제안한다. 에지 검출은 캐니-에지 검출기로 추출하고, RGB 컬러분포 패턴을 분석하여 컬러 양자화를 함으로서 연결성분을 추출한다. 각각 추출된 에지 및 연결성분으로부터 문자후보 영역을 검출하고, 각각의 결과를 결합하여 최종적인 문자 후보 영역을 검출하고, 문자 후보 영역에 대한 검증을 수행함으로서 최종적인 문자영역을 검출한다. 제안한 방법은 다양한 환경에서 얻어진 자연이미지를 대상으로 실험한 결과, 에지 및 연결성분의 두 가지 특징을 결합함으로서 자연이미지에 존재하는 다양한 형태의 문자영역을 효과적으로 검출하였다.

• Korean Journal of Heritage: History & Science
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• v.52 no.4
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• pp.184-205
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• 2019

Buddhism was introduced to Gyeonggi-Do early on and thus created various types of Buddhist culture there. Since the introduction of Buddhism into Gyeonggi-do, the there has been continuous construction of stone stupas. More stone stupas were built in southern Gyeonggi than in northern Gyeonggi-do. In particular, Anseong, Icheon, Yongin, and Yeoju were centers of construction. Looking at the characteristics of each period, stone stupas remain from the Unified Shilla Period to Joseon, indicating that stone stupas were steadily built during this period. The stone stupa corresponding to the Unified Shilla Period is meaningful in that it shows the northern limit of Shilla Buddhist culture. Since then, the stone stupas of the Goryeo Dynasty were actively constructed in the southern part of Gyeonggi-do in the early Goryeo Dynasty. By the late Goryeo Dynasty, the stupas were built throughout Gyeonggi-do, indicating that the construction of the stupa was active. In the Joseon Dynasty, stone stupas were built in temples near Hanyang and deeply related to the royal family. Stone pagodas were erected mainly on major traffic routes. Stone stupas built in Gyeonggi-do have a variety of artistic and historical significance.