• Proceedings of the Korean Information Science Society Conference
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• 2006.10b
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• pp.209-212
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• 2006

연구 활동의 결과물로 생성되는 성과물(논문, 특허, 보고서)은 연구 성과를 측정하는 중요한 척도로서 사용될 뿐만 아니라, 연구에 참여한 연구자 및 연구자가 소속된 기관의 연구 동향 정보를 판단하는데 활용될 수 있다. 본 논문에서는 제안하는 성과 관리 시스템(OntoStore-K$^{(R)}$)은 정보 자원의 식별을 위해서 인력, 기관, 부서, 성과물 등 사용되는 모든 자원에 URI를 할당하고, 이를 기반으로 성과 정보를 등록하고 관리함으로써 정확한 성과 관리를 지원한다. 또한 URI 기반의 성과 정보가 추론 규칙을 통해 확장되면서 다양한 부가 정보를 획득할 수 있는 기반을 제공한다. 본 시스템을 통해 연구 성과물에 대한 정확한 관리는 물론, 연구 성과물에 대한 효율적인 공유 및 접근이 가능함으로써 연구 활동을 촉진할 수 있는 기반이 마련될 수 있다.

• School Mathematics
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• v.11 no.4
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• pp.745-771
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• 2009

To acquire the hints of the development of children's multiplication strategies, this study tried to find the differences between the students who learned multiplication and the students who didn't. And we also tried to explore their acquired computational resources. As a result, we confirm that there is a certain direction on the development of children's multiplication strategies according to their grades and the level of acquirement of mathematical knowledge. Moreover, we comprehend that commutative law is an important part of the strategies on two-digit multiplication and that acquisition of the computational resources must precede the learning of multiplication strategies. In the end part, this article proposes a new taxonomy of strategies for multiplication. To support our proposal, we integrated the prior researches with our findings.

• Clean Technology
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• v.14 no.2
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• pp.144-151
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• 2008

Life cycle assessment was carried out to evaluate the environmental values of dimethylas a diesel alternative fuel with the assumption of dimethyl ether production from natural gas via synthesis gas. The whole life cycles from raw material acquisitions to the final usages of diesel and dimethyl ether were involved in the assessment. Inventory analysis showed that the most significant environmental impacts came from resource depletions and air emissions. Impact assessment revealed that dimethyl ether was environmentally better in the aspect of human health and ecosystem quality but worse in resource depletions compared with diesel fuel. Suggestions for environmental improvement of dimethyl ether as a diesel alternative fuel were prepared based on the assessment results.

• Bulletin of the Society of Naval Architects of Korea
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• v.2 no.1
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• pp.20-23
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• 1965

우리나라는 연해(沿海)에 풍부(豊富)한 수산자원(水産資源)을 가진 동서남(東西南)의 삼해(三海)에 면(面)해서 멀리 탁 트인 태평양(太平洋)을 바라보는 위치(位置)에 있다. 이와같은 지리적(地理的)인 조건(條件)을 구비(具備)하고 있는 우리로서 어찌 바다에 관심(關心)을 갖지 않을 수 있겠는가? 풍부(豊富)한 수산자원(水産資源)이 있음에도 "배"의 부족(不足)으로 마음껏 이를 획득(獲得)하지 못함은 실(實)로 안타까운 일이다. 건국이래(建國以來) 조선산업(造船事業)에 힘을 기우려 이를 발전(發展)시켜왔으나 아직도 수요량(需要量)에 미달(未達)하여 약(約) 256,000여톤(餘屯)의 선박(船舶)이 부족(不足)한 실정(實情)에 있으며, 매년(每年) 1,3000여만불(餘萬弗)의 외화(外貨)가 선박운임(船舶運賃)으로 지출(支出)되는 현시(現時)에, 조선(造船)에 여러가지 애로(隘路)가 많다고 좌수방관(座手傍觀)하고만 있을 수는 없다. 이웃나라의 일본(日本)은 자국선박(自國船舶)뿐 아니라 널리 선박수출(船舶輸出)의 해외시장(海外市場)을 가지고 연간(年間) 200여만톤(餘萬屯)의 건조량(建造量)을 자랑하고 있다. 그러나 우리의 역사(歷史)위에도 통일신라시대(統一新羅時代)의 해양제패(海洋制覇)의 기록(記錄)과 임진란당시(壬辰亂當時) 우리해군(海軍)의 활동(活動) 등 우리선조(先祖)들이 그분들의 손으로 건조(建造)한 선박(船舶)으로써 활약(活躍)한 바 있고 지금의 우리도 차츰 조선업(造船業)을 부흥(復興)시켜 현재(現在) 4,000톤급(屯級)의 선박(船舶)을 건조(建造)하는 단계(段階)에 이르고 있는 것이다.

• Proceedings of the Korea Information Processing Society Conference
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• 2003.11c
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• pp.1513-1516
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• 2003

현재의 웹 검색은 단순히 키워드 매칭만을 수행하기 때문에 검색 결과가 사용자가 원하는 정보와는 의미적으로 상이한 결과들을 많이 포함하고 있다. 사용자가 원하는 정보와 의미적으로 정확히 일치하는 정보들을 추출하기 위해서는 웹 자원에 대한 정확한 의미 부여와 함께, 이를 파악하고 선택적으로 획득, 통합, 가공할 수 있는 온톨로지와 같은 시맨틱 웹 환경요소들이 필요하다. 웹 기술 표준화 단체인 W3C에서는 이와 같은 웹 자원에 대한 의미표현 기술로 OWL(Web Ontology Language)이라는 웹 온톨로지 표현 언어를 발표하였으나 아직 이를 효과적으로 저작, 편집할 수 있는 도구는 전무한 실정이다. 따라서 본 논문은 OWL을 기반으로 하여 온톨로지의 생성 및 편집을 효과적으로 제공할 수 있는 통합된 저작도구를 설계 및 구현하였다.

• Geophysics and Geophysical Exploration
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• v.22 no.1
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• pp.37-43
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• 2019

We present gravity anomaly maps based on KIGAM's gravity data measured from 2000 to 2018. Until 2016, we acquired gravity data on about 6,400 points for the purpose of regional mapping covering the whole country with data density of at least one point per $4km{\times}4km$ for reducing the time of the data acquisition. In addition, we have performed local gravity surveys for the purpose of mining development in and around the NMC Moland Mine at Jecheon in 2013 and in the Taebaeksan mineralized zone from 2015 to 2018 with data interval of several hundred meters to 2 km. Meanwhile, we carried out precise gravity explorations with data interval of about 250 m on and around epicenter areas of Gyeongju and Pohang earthquakes of relatively large magnitude which occurred in 2016 and in 2017, respectively. Thus we acquired in total about 9,600 points data as the result. We also used additional data acquired by Pusan National University for some local areas. Finally, gravity data more than 16,000 points except for the repetition and temporal control points were available to calculate free-air, Bouguer, and isostatic gravity anomalies. Therefore, the presented anomaly maps are most advanced in spatial distribution and the number of used data so far in Korea.

• Tunnel and Underground Space
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• v.31 no.1
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• pp.10-24
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• 2021

Rock mass classification for construction of underground facilities is essential to secure their stabilities. Therefore, the reliable values for rock mass classification from the precise information on rock discontinuities are most important factors, because rock mass discontinuities can affect exclusively on the physical and mechanical properties of rock mass. The conventional classification operation for rock mass has been usually performed by hand mapping. However, there have been many issues for its precision and reliability; for instance, in large-scale survey area for regional geological survey, or rock mass classification operation by non-professional engineers. For these reasons, automated rock mass classification using LiDAR becomes popular for obtaining the quick and precise information. But there are several suggested algorithms for analyzing the rock mass discontinuities from point cloud data by LiDAR scanning, and it is known that the different algorithm gives usually different solution. Also, it is not simple to obtain the exact same value to hand mapping. In this paper, several discontinuity extract algorithms have been explained, and their processes for extracting rock mass discontinuities have been simulated for real rock bench. The application process for several algorithms is anticipated to be a good reference for future researches on extracting rock mass discontinuities from digital point cloud data by laser scanner, such as LiDAR.

• Journal of the Korean Geotechnical Society
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• v.23 no.8
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• pp.17-33
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• 2007

Downhole seismic method is widely used for obtaining shear wave velocity profile of a site because it is simple and economical. Determining accurate travel time of shear wave is very important to obtain reliable result in downhole seismic method. In this paper, comparison study of various travel time determination methods was performed. Numerical study and model chamber test were performed for effective comparison study. Signal traces were acquired by performing downhole test at each numerical simulation and soil box test. Travel time data for each signal traces were determined by using six different methods and Vs profiles were evaluated. Comparing travel time data and Vs profiles with the reference value, the first arrival picking method proved to be ambiguous and unreliable. Other methods also did not always provide accurate results and the magnitude of error was dependent on the signal to noise ratio. Cross-correlation method proved to be the most adequate method for the field application and it was verified additionally with field data.

• Journal of the Korean Society for information Management
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• v.41 no.2
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• pp.245-268
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• 2024

As the recognition of data's value increases, the role of data repositories in managing, preserving, and utilizing data is becoming increasingly important. This study investigates ways to enhance the trustworthiness of data repositories through obtaining CoreTrustSeal (CTS) certification. Trust in data repositories is critical not only for data protection but also for building and maintaining trust between the repository and stakeholders, which in turn affects researchers' decisions on depositing and utilizing data. The study examines the CoreTrustSeal, an international certification for trustworthy data repositories, analyzing its impact on the trustworthiness and efficiency of repositories. Using the example of DataON, Korea's first CTS-certified repository operated by the Korea Institute of Science and Technology Information (KISTI), the study compares and analyzes four repositories that have obtained CTS certification. These include DataON, the Physical Oceanography Distributed Active Archive Center (PO.DAAC) from NASA, Yareta from the University of Geneva, and the DARIAH-DE repository from Germany. The research assesses how these repositories meet the mandatory requirements set by CTS and proposes strategies for improving the trustworthiness of data repositories. Key findings indicate that obtaining CTS certification involves rigorous evaluation of organizational infrastructure, digital object management, and technological aspects. The study highlights the importance of transparent data processes, robust data quality assurance, enhanced accessibility and usability, sustainability, security measures, and compliance with legal and ethical standards. By implementing these strategies, data repositories can enhance their reliability and efficiency, ultimately promoting wider data sharing and utilization in the scientific community.

• Journal of Venture Innovation
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• v.1 no.2
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• pp.89-107
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• 2018

This study examined the success factor of small business CEOs for continuous growth and development of business, and found it competencies of CEOs, and empirically studied the relationship between this factor and business performance. This study also focused on mediating effect of networking activity between competencies of small business CEOs and business performance. As a result of the study, it turned out that leadership competence, external cooperation competence and marketing competence have a significant effects on business performance. Small business CEOs' own efforts for increasing leadership, cooperation and marketing capability are needed as well as government policy and assistance in order to improve business performance. It also tested the mediating effect of networking activity to get information and resources, and proved it plays a role in enhancing business performance, so that it is necessary to promote small business CEOs' access to information and resources. Based on these empirical tests, government and supporting organizations need to refer to that factors affecting business performance are in priority supported in small business policy.