• Journal of the Korea Society of Computer and Information
• /
• v.10 no.3 s.35
• /
• pp.267-273
• /
• 2005

The internet is not simply a new technology that businesses are adopting to reduce their costs of operations and increase revenues. It is literally transforming the way business work. Electronic commerce refers generally to all forms of transactions relating to commercial activities. This research was conducted to identify the critical success factors of electronic commerce. In this study it is found that price and customer service are very important to increase customer satisfaction and intention to repurchase. In addition, the result of this study shows that (1) ease of use, (2) transaction efficiency and (3) qualify assurance are very important to increase customer satisfaction. And, the result of this study shows that (1) ease of use and (2) security are very important to increase intention to repurchase.

• Annual Conference of KIPS
• /
• 2006.11a
• /
• pp.393-396
• /
• 2006

웹의 급속한 성장으로 정보의 양이 많아졌지만 디자인의 비중이 커지면서 웹 문서에 대한 구조를 추출하는데 어려움이 있다. 웹은 사용자가 원하는 정보를 쉽고 정확하게 검색할 수 있도록 웹 문서의 내용을 구조화하여 지속적으로 개선하면서 사용자의 특성과 행동 패턴에 따라 개인화 하여야한다. 이러한 문제를 해결하기 위해서는 웹 문서들 간의 정확한 구조를 추출하는 것이 선행되어야 한다. 본 논문에서는 보다 웹 사이트의 정확한 구조를 추출하기 위한 방법을 제안한다. 제안 방법은 기본적으로 웹문서 태그의 하이퍼링크와 플래시 파일을 2진 형태의 문서로 불러 하이퍼링크를 추출하고 이를 깊이 우선 탐색 알고리즘을 사용하여 방향그래프로 만든다. 하지만 이러한 웹 문서 태그 탐색 시 애플릿이나 스크립트 등에 숨어 있는 하이퍼링크를 찾는 문제와 '뒤로' 버튼 사용 시 웹 접근로그에 기록되지 않는 문제점이 보완되어야 한다. 이를 위해 클릭 스트림을 스택에 저장하여 이미 만들어진 방향그래프와 비교하여 새롭게 찾은 정점과 간선을 추가 삭제함으로써 보다 신뢰성 높은 방향 그래프를 만든다.

• Journal of Korea Technology Innovation Society
• /
• v.7 no.3
• /
• pp.607-640
• /
• 2004

This article analyzes the venture firm based upon the new framework of Dynamic Firm Capability (DFC) to identify the process mechanism. Research methodology includes the case study involving structured interview and data collection from two leading Korean ICT(Information Communication Technology) firms in the same sector (DVR). IDIS, spun off from the university, has accumulated the innovative capability based on the R&D department. On the other hand, KODICOM has retained the technological trajectory in terms of marketing competence. Underlying hypothesis is that a firm should show a idiosyncratic evolutionary pattern by acquiring different complimentary assets(CA). In addition, effective internal process should be matched with the essential characteristics not only at the firm level but also at the sectoral level. By analyzing those two different firms, we will find the strategic successful factors based upon the evolutionary point of view. It is a key contribution of this paper to study on the process mechanism of ventures, and to explain detailed process mechanism by viewing two different characteristics of the firm at the functional level.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.7 no.2
• /
• pp.97-100
• /
• 2006

Dynamic crack propagation in ductile steel is investigated by means of impact loaded 3 point bending specimens. The specimen has the size of $320{\times}75\;mm$ with a thickness of 10 mm. One static and two dynamic experiments with impact velocities of 30.2 m/s and 45.2 m/s are carried out. High speed photography is used to obtain crack growth and crack tip opening displacement data. Direct measurement of the relative rotation of the two specimen halves is made by using Moire interference pattern. The experiments indicate no or only a slight influence of the loading rate on the crack propagation.

• Annual Conference of KIPS
• /
• 2011.04a
• /
• pp.1278-1280
• /
• 2011

인터넷 쇼핑몰을 통하여 사용자들은 다양한 상품의 구입과 유통정보시스템의 구축으로 복합적이고, 차별화된 전략을 통해 소비패턴의 큰 변화를 가져왔다. 이러한 추세는 대형마트를 중심으로 확산되었고, 대형마트를 선호하고 구매력을 향상시키는 요인이 되었으며, 경제성장과 소득수준의 향상으로 사용자들의 욕구 또한 고급화되고 다양화되는데 큰 영향을 끼치고 있다. 이로 인하여 인터넷에서 처리되는 정보의 종류가 점차 확대되고 다양화되면서 정보를 처리하기 위한 구현기법도 복잡해지고 있으며, 웹사이트들은 단순히 정보제공 차원을 넘어서고 있다. 이에 따라 사용자들은 동적인 정보제공, 보안기능, 통계처리들의 기능도 요구하고 있다. 이러한 요구를 수용하기 위해서는 웹 자원을 효율적으로 관리하기 위한 시스템이 필요하다. 이러한 이유로 현재 대형마트별로 홈페이지가 구축되어 있어 사용자들이 원하는 생필품을 검색할 수 있으나, 어느 특정지역을 대상으로 통합하여 검색할 수 있는 시스템은 없는 상황이다. 본 논문에서는 D 지역의 대형마트를 선정하여 사용자들이 주로 이용하는 생필품들의 가격을 조사하여 상품에 대한 가격을 웹상에서 보다 쉽게 비교하여 검색할 수 있도록 MPP(Mart Products Price) 통합 검색 시스템을 구현하였다.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2021.06a
• /
• pp.48-48
• /
• 2021

2020년은 급격한 인구감소, 고령화, 대도시 인구집중 등 우리나라의 인구구조변화가 급격하게 진행되는 것을 보여주는 해였다. 2020년 주민등록인구수가 처음으로 감소하였으며, 2020년을 기점으로 수도권 인구가 비수도권 인구를 추월할 것으로 전망되었다(통계청, 2020.6). 인구감소, 도시인구 집중화 외에도 1-2인의 소규모 가구 증가 등의 인구구조변화도 진행되고 있다. 이러한 인구구조 변화는 우리나라의 잠재적 경제성장률 등 국가경제뿐만 아니라, 지역별 물이용 변화 등 다양한 공공서비스 수요패턴 및 관련 재정 등에도 영향을 미친다. 이는 공공서비스 공급 및 관련 인프라 유지·관리에도 영향을 미치게 된다. 특히 중소지역의 공공서비스 사업의 경우, 인구감소로 인한 공공서비스 수요 및 관련 재정수입의 감소로 사업의 지속가능성이 크게 약화 될 수 있다. 따라서 인구구조변화가 공공서비스 수요에 미치는 영향을 분석하여, 관련 인프라시설의 유지·관리에 미칠 영향을 진단해 볼 필요가 있다. 이에 본 연구에서는 인구구조 변화가 공공서비스 중 물관리에 어떠한 영향을 미치는지 정량적으로 분석해보고자 하였다. 이를 위해 160개 지방자치단체의 2006~2018년까지의 패널 자료를 구성하여 인구구조 변화 특성 중 인구 규모 변화, 소규모 가구 수의 변화, 인구 연령대 변화(고령화)가 물이용 변화에 미치는 영향을 회귀분석을 통해 중점적으로 분석해보았다. 본 연구의 인구구조 변화에 따른 공공서비스 이용변화에 대한 정량적 분석결과는 공공서비스 운영·관리 시 참고할 수 있을 것이다.

• Journal of Educational Research in Mathematics
• /
• v.25 no.4
• /
• pp.717-754
• /
• 2015

As a design research, this study aims to identify students' collaborative problems solving patterns using the Wiki and design factors triggering MKB(mathematical knowledge building) in virtual environment. For 70 days, 14 Korean secondary gifted students, who enrolled in calculus II courses in one of gifted institutions in Korea, solved 10 math problems together using the Wiki. In this study, I considered five design factors; motivation, practice of LaTeX, norms of participation, epistemic agency, and two types of educational settings. The primary pattern emergent in students' collaborative problem solving process is identified as 'solutions and refutations' along the double helix consisting of the constructive line and the critical line, which is very similar to the pattern of 'Conjectures and Refutations'(Lakatos, 1976). Despite that most participants had difficulty in using LaTeX for mathematical expressions, this study shows that Wikis are valuable tools for providing Korean secondary students opportunities to learn social virtue such as humility and courage (Lampert, 1990), which is considered to be have been neglected in Korean educational environment but is emphasized as precious for doing mathematics in the field of mathematics education.

• Journal of the Korean Association of Geographic Information Studies
• /
• v.23 no.2
• /
• pp.83-94
• /
• 2020

Busan Metropolitan City, a research site of this study, was promoted to a metropolitan city in 1995 with the implementation of the local autonomy system, and the overall change was made as it absorbed the surrounding areas to address the shortage of population and space. Twenty-five years after the introduction of the local autonomy system, it is necessary to diagnose whether balanced development of the entire city is being made in accordance with the reorganization of the metropolitan city in terms of spatial structure. In this study, changes in spatial structure and regional characteristics were analyzed by applying population potential, which means potential for future spatial interaction, in time and space. According to the analysis, the development was taking place around the center area and the sub-center established by the urban master plan, but Gangseo-gu and Gijang-gun, which were incorporated in the past, remained stagnant. In addition, it was shown that the spatial expansion of the city was suppressed by the green belt surrounding the city. However, in other regions where the green belt is located, the city has been expanded, which is different from Gijang-gun or Gangseo-gu, which was incorporated into the metropolitan city. Therefore, the cause of the decline in incorporated areas should not be limited to the institutional dimension of land use regulation. Growth management and balanced development plans will be necessary for the development of declining old downtowns and underdeveloped incorporated areas.

• Journal of the Economic Geographical Society of Korea
• /
• v.13 no.3
• /
• pp.297-311
• /
• 2010

The purpose of this study is to analyze the causality among GRDP, patent, investment of R &D, and researcher among 16 Metropolitan cities and provinces in Korea. Using the annual data ranged from 1998 to 2008, the causality test for time-series data such as unit roots test and Granger causality test were performed. We estimate the Panel-Var of the four variables to find out the various Granger causal relations for two groups which are classified by the patent productivity. The panel data causality results reveal that there are bidirectional causality relations among four variables for the more patent-productivity group. The patent has bi-directional effects on GRDP and R&D. The patent cause GRDP and vice versa, patent cause R&D and vice versa. Patent not only has strong direct impact on GRDP and R&D but also has affected by the increase of GRDP and R&D through the interactive feedback mechanism. However, the causality patterns are somewhat different between the more patent-productive region and the less patent-productive region. There exists one directional causality between the R&D and GRDP for the less patent-productivity group. Such result may imply that the type of regional innovation policy should be differentiated between two groups. Regional economic policy efforts should be placed on increasing the knowledge productivity and on strengthening the regional competitiveness through the regional innovative infrastructure.

• KDI Journal of Economic Policy
• /
• v.26 no.2
• /
• pp.249-280
• /
• 2004

This paper analyzes the industrial growth of Korea in the 1990s and its relationship with the nation's export performance. The result shows that total factor productivity (TFP) played a significant role in the growth of some industries, where in particular a sharp increase in TFP was observed in the electrics and electronics industry and the automobile industry in the late 1990s. While CEPII RCA indexes for the Korean industries such as IT industry and automobile industry significantly increased since 1998, only limited evidence was found that TFP or TFI influenced RCA. Investigating Korea's export performance in the Northeast Asian context, this paper shows that, in the 1990s, the growth of Korea's exports to Japan was led by industries that recorded relatively fast growth in total factor input (TFI). In contrast, that to China was almost equally contributed by industries that experienced relatively fast growth in TFP or TFI. This paper also investigates competition between Korea and China, and Korea and Japan in the world market. The competition between Korea and China was relatively stronger for the Korean industries to whose growth TFI made a more significant contribution. While no decisive evidence is found for the relationship between TFP growth in Korean industries and their competition against Japan in the world market, it is revealed that the competition between Korea and Japan became less intense for the Korean industries to whose growth TFI made a stronger contribution. In this regard, the paper supports the view of 'nut-cracking' that the Korean economy has lost its competitiveness in the sectors where it maintained comparative advantage, but failed to catch up more advanced countries such as Japan by gaining competitiveness in more capital or technology intensive sectors.