• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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• pp.1067-1069
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• 2003

The Earthquake Case Study and Disasters Information System based on GIS (MapECDIS 2002 for Windows), sponsored by Science and Technique Ministry of CHINA, is a GIS system developed to provide a tool for the government and the public to query and comprehend the disaster information (since 2221BC) and case study results (since 1966) of destructive earthquakes occurred in China. The system is expected to be useful for the earthquake forecast practice, the seismology research and earthquake disasters research as an applied assistant tool. The design idea and main functions of the system are introduced in the paper.

• 기술혁신연구
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• 제14권1호
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• pp.147-175
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• 2006

One of the biggest problems of Korean economy is polarization of firms for export and domestic demand and that of conglomerates and SME's achievement. One of the culprits lies weakness of intermediate industry such as machine tool. Since intermediate industry is important path where export performance affects domestic demand and whose actor usually is SMEs with high spill over effect in labor market. Especially, intermediate industry Is vulnerable because of industrial policy biased In backward linkage effect. However if a country fails to develop intermediate industry above some critical point, that country would fall in low-tech equilibrium without growth. In case of benign circle where final goods industry growth leads growth of intermediate industry and again it leads that of final goods industry, it can reach high-tech equilibrium. By contrast, in opposite case where in industrialization latecomer fails to link industries likewise above some critical point that country would fall in low-tech equilibrium without growth. Moreover, for several reasons, machine tool firms of Korea have difficulty in catching up technology above critical point. Firstly. Conglomerate demander neglects their product. Secondly, even after success of development overcoming difficulties they fail to get market share for response of dumping of foreign competitors. And the last one is patent litigation of foreign competitors that incapacitate the technology development. For these, Korean machine tool firms fell in 'middle-income country trap' itself, since they stuck in some extent when they technologically catch up. Consequently, for latecomer country in machine tool industry to leapfrog meaningfully policy support is necessary, Weak intermediate industry does not Induce domestic firms and remained fragile. Therefore, localization, policy should reflect condition of technological catch up more than before, in order to be effective and fruitful. There should be turning point over relationship between conglomerates, major demander of machine tool and SME's, for only with active purchasing of conglomerate Korean machine industry can grow.

• 한국컴퓨터정보학회논문지
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• 제14권1호
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• pp.17-24
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• 2009

내장형 시스템의 요구사항이 증가함에 따라 내장형 시스템 소프트웨어의 복잡도가 증가하고 있다. 그러므로 내장형 시스템 소프트웨어 테스팅의 필요성이 높아지고 있다. 본 논문은 내장형 시스템 소프트웨어의 테스트를 효과적으로 실행하기 위해 교차 개발 환경에 적합한 테스팅 도구를 제안한다. 본 도구는 호스트/타겟 구조로 이루어져있으며 호스트에서 작성한 테스트 케이스를 타겟에서 실행할 수 있는 직관적인 환경을 제공한다. 그리고 제안하는 도구의 테스트 케이스는 XML 기반의 테스트 스크립트를 이용한다. 또한, 직관적인 테스트 케이스를 작성하기 위해 트리와 테이블 기반의 테스트 스크립트 편집기를 갖는다. 제안하는 테스트 도구는 테스트 케이스 작성에서부터 결과확인까지 직관적인 GUI를 제공하여 테스트 케이스 작성에 대한 부담을 경감시키는 장점을 가진다.

• 한국원자력학회:학술대회논문집
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• 한국원자력학회 1999년도 추계학술발표회요약집
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• pp.114.2-114
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• 1999

• 열처리공학회지
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• 제14권2호
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• pp.81-88
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• 2001

The effects of post-oxidation and sulfnitriding treatments on the phase transformation in the nitrided case of tool steels have been studied. Dense and compact $Fe_3O_4$ layer was formed at the outer surface of nitride compound layer by post-oxidation treatment and multi layer of iron sulfide(FeS) was formed in the compound layer by sulfnitriding treatment. The surface hardness decreased because of formation of the soft oxide or sulfide at the nitride surface. Diffusion layer of nitride case was not affected by post-oxidation treatment or sulfnitriding treatment of nitrided alloy tool steels.

• 한국콘텐츠학회논문지
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• 제9권3호
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• pp.72-80
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• 2009

기업은 비즈니스 프로세스 조정 또는 기업의 전략적 목적을 달성하기 위하여 정보 기술을 도입하고 있다. 또한 데이터 일관성에 대한 요구에 대해서는, 소프트웨어 개발에 적용되어 표준화 규율을 채택하여 이를 따르는 소프트웨어 개발 회사들이 늘어나고 있다. 이는 사용자들의 요구일 뿐만 아니라 이러한 규율을 채택함으로써 적은 비용으로 더 나은 결과물을 얻을 수 있기 때문이다. 프로젝트 관리 도구를 사용한 체계적이고 일관적인 소프트웨어의 개발은 더욱 더 중요한 의미를 가지게 된다. 따라서, 본 논문은 효율적인 데이터 사전관리를 통하여 효과적으로 시스템 구축 지원을 할 수 있는 프로젝트 관리 기법에 대하여 기술한다.

• 한국컴퓨터정보학회논문지
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• 제21권8호
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• pp.65-75
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• 2016

In this paper, we present a novel approach to help MSR researchers obtain necessary data with a tool, termed General Purpose Extractor for Source code (GPES). GPES has a single function extracts high-quality data, e.g., the version history, abstract syntax tree (AST), changed code diff, and software quality metrics. Moreover, features such as an AST of other languages or new software metrics can be extended easily given that GPES has a flexible data model and a component-based design. We conducted several case studies to evaluate the usefulness and effectiveness of our tool. Case studies show that researchers can reduce the overall cost of data analysis by transforming the data into the required formats.

• 오토저널
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• 제9권5호
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• pp.49-56
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• 1987

This paper is a study on the effect of the cutting speed on the tool wear in turning of the glass fiber reinforced plastics. The wear behavior of cutting tool is studied by means of turning, changing the cutting speed and feed in the wide range. Moreover, the theoretical model applicable to the cutting speed of wide range is analysed. The main results obtained are as follows: The relation between the tool wear and the cutting speed is divided into three range in case of the constant cutting distance. 1) At the low cutting speed, the tool wear is independent of the cutting speed, but dependent mainly on the contact length between tool and glass fiber(lst range). 2) At the high cutting speed, the tool wear is independent of the contact length, and dependent on the cutting speed only(2nd range). The tool wear increases in proportion to the cutting speed. 3) At the higher cutting speed than the speed in the 2nd range, the tool wear is independent both of the cutting speed and the contact length(3rd range). 4) In the 3rd range, tool flank wear is constant and is observed that only the wear of cutting edge increases.

• 한국정밀공학회지
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• 제16권11호
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• pp.47-54
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• 1999

Tool wear is one of major causes occurring defectives in NC machining. In this paper we developed an automatic tool compensation system for the NC lathe machining. The system compensates machining error without any help of operators whenever the specification of a part is out of a tolerance. The configuration of the automatic compensation system consists of a NC lathe, an autoloader, a sensor, and a PLC. The system is operated as follows. A workpiece loaded by the autoloader is machining on the NC lathe. Once the workpiece is machined to be turned to a part, it is moved onto the sensor to be measured. If the sensor detects a part out of tolerance, a tool compensation is made in the NC controller. The system gives a help in increasing the productivity by reducing occurrence of defective parts as well as by eliminating time for the tool compensation. Besides the productivity increase, the system calculates cumulative usage time of the tool and notices the tool replace time to a worker by an alarm signal. A case is introduced to show that the system can be applied effectively in a shop.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제14권1호
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• pp.221-239
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• 2020

In this paper, a visualization digital forensics tool, called JumpList Analyzer, is implemented. The tool can analyze the complicated Jump Lists files, and then the results are demonstrated by visualization. To compare the proposed tool with the other Jump Lists tools, the proposed tool is the only one can display the analyzed results by visualization. The visualization will help the investigators more easily to find the evidence than the other tools showing the analyzed results by texts only. In the experiment, the proposed JumpList Analyzer is demonstrated its convenience at identifying artifacts for doing digital forensics in a financial fraud case. In addition, the proposed tool can also be used to reveal the computer user's behavior or background.