• Proceedings of the Korean Information Science Society Conference
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• 2000.04b
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• pp.181-183
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• 2000

현재의 컴퓨팅 환경은 멀티미디어와 인터넷, 즉 웹 환경으로 요약된다. 이러한 환경에서 운영되는 복잡한 정보 시스템-인터넷 TV 방송, 문서 관리시스템, 가상 대학, 그룹 웨어, 지식 경영 시스템 등은 대용량의 데이터베이스 데이터와 멀티미디어 데이터를 기반으로 해서 동작한다. 이러한 시스템들에서의 데이터은 데이터 베이스 내에 존재하는 메타 데이터와 운영체제의 파일 시스템 내에 존재하는 파일 데이터로 나뉜다. 이러한 데이터의 분리로 인해서 나타나는 가장 큰 문제점은 이 둘 데이터 사이의 불일치성(inconsistency)이다. 이는 멀티미디어 데이터와 데이터베이스 데이터를 접근해서 사용하는 기능(operation)의 차이로 인해서 발생하게 된다. 본 논문에서는 복잡한 정보시스템에서 사용되어 지는 데이터들 사이에 발생되는 불일치성을 해결하며, 쉬운 프로그램밍을 위한 응용 프로그래밍 인터페이스(ATI)를 제공해주는 AEM(Activity Execution Manager) 프레임워크를 설계 및 구현한다.

• Annual Conference on Human and Language Technology
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• 2007.10a
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• pp.174-178
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• 2007

온톨로지 기반 분산 정보시스템 환경에서는 시스템들 간의 정보 공유을 위해 전문가에 의한 명시적 온톨로지 매핑(Explicit Mapping)을 통해 의미적 이질성(Semantic Heterogeneity)을 해결하고 있다. 하지만, 온톨로지 매핑의 고비용성 때문에 모든 정보시스템들 간의 매핑이 이루어지기 힘들다. 따라서, 본 논문에서는 이미 존재하는 온톨로지 매핑 정보들의 재사용을 통해 존재하지 않은 온톨로지 매핑 정보를 묵시적으로 예측하고자 한다. 본 논문에서는 이와 같은 분산 환경에서의 쿼리 전송을 통한 지식 검색에 있어서의 온톨로지 매핑을 기반으로 한 적절한 쿼리 변환 방법론을 소개하고자 한다.

• KDI Journal of Economic Policy
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• v.34 no.1
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• pp.87-133
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• 2012

This paper consists of two parts. The first part introduces a simple endogenous growth model. It is based on Romer(1990), but extends the original model by incorporating individual workers skill heterogeneity. Based on the heterogeneity, the model has a labor allocation mechanism between skilled (research) and unskilled (production) sectors. Different from Romer(1990), the labor allocation is determined by both demand and supply conditions of the economy. The endogenous growth model presented in this paper shows how the shape of the distribution of human capital affects on the labor allocation, hence on the employment structure, wage profile and economic growth. The model can be extended to an open economy. With the heterogeneity, the extended model explains distributional effect as well as growth effect of the economic openness. The second part provides empirical evidence in support of the extension part of the model presented in the first part. Based on the endogenous growth framework as proposed by Romer(1990) and Rivera-Batiz and Romer(1991), the model explains how economic openness affects labor allocation between skilled and unskilled sectors. According to the model, economic openness can affect labor allocation through two channels; knowledge spillover and specialization. First, the openness promotes knowledge spillover and hence increases the productivity of workers in the skilled sectors. This makes the economy employs more workers in the skilled sector. On the other hand, the openness causes global specialization which leads more employment in the skilled sector for the developed countries but at the same time, leads less employment in the skilled sector for the developing countries since the developing countries have comparative advantages in the unskilled sector. The empirical results obtained using cross country panel data in this paper support these two effects of knowledge spillover and specialization.

• Journal of the Korean association of regional geographers
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• v.15 no.6
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• pp.820-833
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• 2009

Multiculturalism in education are different from each countries, It is needed to practice multicultural education in many fields facing changes to multicultural society in Korea. This study demonstrates on the relationship of social friendliness and stereotypical attitudes toward Saeteomins (North Korean refugees) to the knowledge of North Korea. Saeteomins are special in the respect of linguistic and ethnic homogeneity of Korea. They have to adapt themselves to new circumstances like other immigrants from abroad. At the same time they have cultural senses of difference to live in a divided country in spite of ethnic homogeneity. It is important to get openminded attitudes to be receptive to cultural diversity in the respect of getting multicultural sensitivity. On account of a growing migration of Saeteomins family, Saeteomin students have difficulties in adapting to Korean society. This study focuses on the point of middle school (general) students' view to Saeteomin students, who have experiences to meet each other. There are three categories of contents knowledge, common sense of North Korea and social issues related to North Korea in this paper. All of them are significant to social friendliness and stereotypical attitudes toward Saeteomins to the knowledge of North Korea. That is important point to contents construction in curriculum about North Korea. This study is meaningful to find the potential to link contents knowledge of subject to multicultural education practice in the process of curriculum change especially in relation to the knowledge of North Korea in 2007.

• Journal of Technology Innovation
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• v.30 no.1
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• pp.21-56
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• 2022

Since Michael Porter (1991) has proposed that environmental regulation can help a firm increase its competitiveness by encouraging it to engage in more innovative activities to meet the environmental regulation, a number of researchers have empirically investigated the "Porter Hypothesis." However, the empirical results still remain mixed. Combining the perspectives of the behavioral theory of the firm and firm heterogeneity, we argue that the levels of regulation stringency and time-pressure would differentially influence a firm's innovative behavior depending on the firm's aspiration level, performance feedback and technological capabilities. Using the U.S. Corporate Average Fuel Efficiency (CAFE) regulation context, we empirically demonstrate that lagging firms that do not meet the new regulation standard announced by the government tend to search for more distant knowledge and that the impact of the patents they file for decreases as the regulation becomes more stringent. In addition, we also find that as time-pressure increases, lagging firms stand to apply for more patents than do leading firms whereas the overall impact of the patents decreases. These results help us advance our understanding of the nuanced causal relationship between regulation and innovation and provide practical implications for policymakers.

• The KIPS Transactions:PartD
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• v.12D no.3 s.99
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• pp.365-374
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• 2005

The B2B electronic product commerce needs intermediary system to provide an integrated interface for the parts libraries of multiple suppliers. However, it is difficult to automatically integrate the parts libraries because they are heterogeneous. Existing ontology-based approaches show a limited functionality of automated integration of information because Dey can not prevent ontologies from being modeled in different ways, so that the inter-ontology mappings to resolve the heterogeneity become complicated and arbitrary. In order to overcome such problems this paper proposes an ontology modeling framework for parts libraries based on the Guarino's theory of upper ontology. The framework provides knowledge modeling primitives which have explicit formal meanings and modeling principles based on ontological natures. Using the framework, ontology developers can model the knowledge of parts libraries systematically and consistently, so that the resulting ontologies become comparable and uniform and the ontology merging algorithm for the automated information integration can be easily developed.

• Proceedings of the Korea Information Processing Society Conference
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• 2003.05b
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• pp.1449-1452
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• 2003

지금까지의 정보 시스템들이 기종에 상관없이 프로그램이 실행되고 서로 데이터를 주고받을 수 있는 환경이 성취되어 왔음에도 불구하고, 데이터 자체에 대한 불일치는 범세계적인 지식 컨텐츠공유 뿐만 아니라 전자 상거래 등의 걸림돌이 되어 왔다. 본 논문에서는 XML 문서를 통한 데이터 공유시 효과적인 상호 운용성을 얻기 위해 메타데이터 레지스트리(MDR)를 통한 XML 문서 자동 변환 기법을 제안하고자 한다.

• Journal of Korean Library and Information Science Society
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• v.41 no.4
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• pp.313-332
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• 2010

This study has examined the cause of the library anxiety among foreign students upon visiting college libraries. 131 students were investigated using Library Anxiety Scale (LAS) to analyze the relationship between sex, grade, library use education, frequency of library use, Korean skill and cultural heterogeneity. The result of the LAS showed an average of 2.60 among foreign students, and the anxiety from the "mechanical barrier" was scored the highest. For sex, male students tended to be relatively more anxious than female students on the "accommodation of library" and "knowledge of library." Students who participated in the library use education were less anxious than those who did not, and the more one used library, the less one became anxious. Based on these results, the study proposes the way ahead for resolving library anxiety through library use education and frequency of use.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.14 no.7
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• pp.1701-1707
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• 2010

This study is intended for implementing the system environment that can help integrate and retrieve various types of data in real-time by providing semantic interoperability among distributed heterogeneous information systems. The semantic interoperability is made possible by providing a TMDR(Topicmaps Metadata Registry), a set of ontologies. TMDR, which has been made by combining MDR(MetaData Registry) and TopicMaps and storing them in the database, is able to generate distributed query and provide efficient knowledge. MDR is a metadata management technique for distributed data management. TopicMaps is an ontology representation technique that takes into consideration the hierarchy and association for accessing knowledge data. We have created TMDR, a kind of ontology, that is fit for any system and able to detect and resolve semantic conflicts on the level of data and schema. With this system we propose a query-processing technique to integrate and access heterogeneous information sources. Unlike existing retrieval methods this makes possible efficient retrieval and reasoning by providing association focusing on subjects.

• Journal of Intelligence and Information Systems
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• v.12 no.2
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• pp.33-48
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• 2006

The Semantic Web and its related technologies have been opening the era of information sharing via the Web. There are, however, several huddles still to overcome in the new era, and one of the major huddles is the issue of information integration, unless a single unified and huge ontology could be built and used which could address everything in the world. Particularly in the e-business area, the problem of information integration is of a great concern for product search and comparison at various Internet shopping sites and e-marketplaces. To overcome this problem, we proposed an ontology-driven mapping algorithm between heterogeneous product classification and description frameworks. We also peformed a comparative evaluation of the proposed mapping algorithm against a well-Down ontology mapping tool, PROMPT.