• Proceedings of the Korean Society for Information Management Conference
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• 2003.08a
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• pp.27-34
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• 2003

현재 정부기관이 주체가 되어 운영하고 있는 정보서비스는 대규모 예산 및 고급인력을 투자하여 체계적으로 가공된 질 높은 정보를 제공하는 우수한 서비스임에도 불구하고, 이용자들의 서비스에 관한 인지도 부족으로 활성화가 되지 않고 있다. 본 연구는 최근 경제적인 홍보수단으로 각광받고 있는 검색엔진을 활용한 웹 서비스 마케팅 방법인 Paid Listing, Paid Inclusion, Search Engine Optimization의 기법을 살펴보고 이를 정보서비스의 활성화를 위해 사용할 수 있는 방안 및 사례를 제시하고자 한다.

• Journal of Korean Library and Information Science Society
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• v.33 no.3
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• pp.393-413
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• 2002

This study is to suggest a classification system to classify the agricultural information resources on the internet. In the first part, I analyzes KDC's class 520(agriculture science). The second part compares the agricultural classes of Yahoo! Korea with those of Empas search engine. The third part compares the classes of AFFIS with Agri_Directory. Based on the comparative analysis, it proposes a classificatory system for the agricultural information resources on the internet.

• Archives of design research
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• v.15 no.2
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• pp.223-232
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• 2002

As the Internet becomes widespread as a significant tool of obtaining information, there is a growing demand for a system to efficiently organize and manage information on the Internet. Accordingly, research on the directory classification structure that directly affects the efficiency of a users information search is actively investigated in every field. The study intends to suggest an efficient classification structure by comparing and analyzing the directory classification structure of current design portal sites with the theory of literature classification structure, in order to increase the efficiency of search according to the directory classification structure of design sector.

• The Journal of Korean Institute for Practical Engineering Education
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• v.2 no.1
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• pp.154-163
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• 2010

The object of this study is to investigate the penetration characteristics according to the change of stacking sequences and curvature radius in the composite laminated shell. They are staked to [02/902]S and [0/902/0]s, their interlaminar number are two and four. We are manufactured to composite laminated shells with various curvature radius. Curvature radius of composite shell is 100, 150, 200mm and ${\infty}$(it's meaning flat-plate). In general, kinetic energy after impact-kinetic energy before impact increased linearly in all specimens. Absorbed energy increased linearly as the curvature increased, and absorbed energy of [02/902]S specimen, which is small interlaminar number, was higher than [0/902/0]s specimen.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 2009.04a
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• pp.360-363
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• 2009

토목구조물의 설계 패러다임이 2차원에서 3차원으로 전환될 때 효율성과 재활용성의 관건이 되는 기술적 제약사항이 호환성이다. 대부분의 캐드 엔진이 형상모델 수준에서 호환성 혹은 연계성을 지원하고 있지만 3차원 정보모델에서 요구하는 정보모델의 호환성은 지원하고 있지 않은 실정이다. 이 논문에서는 콘크리트 박스 교량에 대해서 3차원 교량 정보 모델을 구성하고 건설 프로세서에서 이를 활용할 수 있는 방안을 시범적으로 적용한 사례를 정리하였다. 적용 대상 구조물은 FSM 공법으로 시공되는 경간 40미터의 콘크리트 박스거더 교량이다. 견적, 시공시뮬레이션, 해석 등의 프로세서의 요구사항을 반영한 분류체계에 따라 형상모델의 체계를 정의하고 각각의 형상모델 단위에 정보를 부여하는 방식을 사용하였다. 개별 프로세서를 위한 솔류션에서 이러한 형상과 정보가 연계된 내용을 받아들이거나 캐드 엔진에서 필요한 형태로 내보내는 방식을 모두 시도하였다. 3차원 형상 모델과 시간이 부여된 4D 시뮬레이션을 활용하여 공사 스케쥴에 따라 모델 레이어 분류 작업으로 공사 진행 단계가 가상으로 보여진다. 시범 적용을 통해서 가상건설 시스템의 구성하는 개별 솔류션 혹은 정보체계에 대한 문제점과 개선사항을 도출하였다.

• Journal of Korean Library and Information Science Society
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• v.31 no.4
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• pp.111-138
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• 2000

The lxnpose of this study is to pmvide the basic data for developing rational classification scheme of intemet resources in the fields of the information & telecommunications technology. The coverage of this study is, kt, to dehe the concept of informtion & telecommunications, and also to investigate the division of information & telecommunications technology through the literature, seumd, to analyze the using library classification schemes for internet resources, and thud, to review classi6cation system of the directory search engines. In this study, I w new

• Journal of Aerospace System Engineering
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• v.11 no.2
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• pp.43-50
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• 2017

The sea of the Korean peninsula has undergone various marine changes, including naval vessels, naval operational aircrafts, air force fighters, coastal airports and airfields. In particular, salt directly affected by the marine environment, equipment operating under a high temperature / high speed as the gas turbine is the high temperature corrosion (Hot Corrosion) caused by sulfur components and salinity of the fuel used. When the height of the demister (air intake) is less than 7 m, the salinity of the salt entering the sea increases and the corrosion increases rapidly. In addition, the weapon systems operating in the East Sea than in the West Sea showed a 17% increase in the corrosion rate due to the relatively high salinity scattered by saline, wind, and wave. In order to minimize the salinity inflow, it should be operated at more than 13 m from the sea to minimize rapid hot corrosion.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2017.05a
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• pp.137-138
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• 2017

The sea of the Korean peninsula has various marine changes, including naval vessels, naval operational aircrafts, air force fighters, coastal airports and airfields. In particular salt directly affected by the marine environment, equipment operating in a high temperature / high speed as the gas turbine is the high temperature corrosion(Hot Corrosion) caused by sulfur components and salinity of the fuel used. When the height of the demister (air intake) is less than 7m, the salinity entering the sea increases and the corrosion increases rapidly. In addition, the weapon systems operating in the East Sea than the West Sea showed a 17% increase in corrosion rate due to the relatively high salinity scattered by saline, wind, and wave. In order to minimize the salinity inflow, it should be operated at more than 13m from the sea to minimize rapid hot corrosion.

• The Journal of the Korea Contents Association
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• v.19 no.5
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• pp.187-193
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• 2019

Key-value storage engines are an essential component of growing demand in many computing environments, including social networks, online e-commerce, and cloud services. Recent key-value storage engines offer many features such as transaction, versioning, and replication. In a key-value storage engine, transaction processing provides atomicity through Write-Ahead-Logging (WAL), and a synchronous commit method for transaction processing flushes log data before the transaction completes. According to our observation, flushing log data to persistent storage is a performance bottleneck for key-value storage engines due to the significant overhead of fsync() calls despite the various optimizations of existing systems. In this article, we propose a group synchronization method to improve the performance of the key-value storage engine. We also design and implement a transaction scheduling method to perform other transactions while the system processes fsync() calls. The proposed method is an efficient way to reduce the number of frequent fsync() calls in the synchronous commit while supporting the same level of transaction provided by the existing system. We implement our scheme on the WiredTiger storage engine and our experimental results show that the proposed system improves the performance of key-value workloads over existing systems.

• International Commerce and Information Review
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• v.15 no.3
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• pp.411-430
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• 2013

Overseas marketing before the conclusion of a contract is a huge obstacle to enter the global market because it has needed the company's maximum capacities which are some cost, time and human resources. Thus it required a reestablishment about the education fields and research schemes. Due to the advancements in ICT and internet, a subject of e-trade is becoming a critical issue with a subject of a practice of international trade. However, since the mid-2000s, e-trade research articles and educational materials such as textbooks, research papers are being gradually reduced. Therefore the purpose of this study, from an oversea marketing point of view among the various e-trade fields, is to measure an education performance and an academic research scheme. And this study will suggest direction of improvement about research scheme and educational performance in the overseas marketing. According to the result, to establish the education and research scheme about SEM(Search Engine Marketing), SEO(Search Engine Optimization) and SNA(Social Network Analysis) which are introduced in the industry among the education and research field related the e-trade is urgent. And some subjects need a capstone-design reconcile theory and practice.