• Digital Contents
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• no.12 s.151
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• pp.92-107
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• 2005

한국데이터베이스진흥센터·한국도서관협회·한국과학기술정보연구원이 공동주최한 제8회 디지털도서관컨퍼런스(DLC)가 지난달 22일 코엑스 그랜드볼룸에서 개최됐다. 이번 컨퍼런스는‘ 유비쿼터스 라이브러리와 도서관의 미래’라는 주제로 도서관 및 관련업계 관계자 400여명이 참석한 가운데 성황리에 열렸다.

• Digital Contents
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• no.10 s.161
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• pp.36-41
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• 2006

코스닥 등록 업체들의 매출구모와 경영안정성은 비례할까. 모든 코스닥기업들에게 적용될 순 없지만 적어도 코스닥 DC기업들에게 만큼은 해당되는 얘기이다. 올 상반기 코스닥에 등록된 DC업체들의 실적을 분석한 결과, 매출 규모가 큰 업체일수록 순이익, 영업이익 등의 재무지표도 대체로 좋았다. 이는 한편으로 '알짜배기' 소형기업, 즉 강소기업(强小企業)이 상대적으로 줄어들고 있다는 것을 의미한다는 점에서 DC산업의 건전한 생태계 육성을 위해 풀어야 할 과제가 되고있다.

• Digital Contents
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• no.8 s.159
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• pp.48-51
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• 2006

e러닝시장이 변화의 바람을 맞고 있다. 단지 성장세만 높아지고 있는 것이 아니라 시기상조라고 여겨졌던 유비쿼터스러닝도 현실화 되고 있다. 이를 반영하듯 대기업의 시장진입이 이어지고 있고, 오프라인 교육업체들도 기존의 관망세에서 벗어나 본격적으로 시장에 뛰어들고 있다. PMP 등 새로운 디바이스에 적합한 콘텐츠의 부족, 인력난등의 문제점에도 불구하고 본격적인 성장기를 맞고 있는 e러닝시장을 분석했다.

• Digital Contents
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• no.5 s.156
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• pp.32-37
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• 2006

DC기업들의 2005년 실적은 양극화로 요약할 수 있다. 일부 업체들은 자사의 실적에 '사상 최대'라는 수식어를 붙일 만큼 흡족한 성과를 올린 반면 또 다른 업체들은 생존 자체를 전전긍긍해야 하는 처지가 되기도 했다. 시장 전반적으로포털업체들의 주도현상이 지속되고 있는 가운데 온라인게임업계는 지각변동이 감지되기도 했다. 업체간 편차가 늘어난 2005년 주요 DC업체들의 실적을 분석했다.

• Digital Contents
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• no.10 s.149
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• pp.50-52
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• 2005

전자책으로 대표되는 온라인출판 시장의 성장세가 예사롭지 않다. 전세계 온라인출판 시장은 지난해 1억9,000만달러 시장에서 오는 2008년에는 5억달러가 넘는 거대시장으로성장할 것으로예상되고있는 것. 특히 기존의PC뿐만 아니라PDA 등 전자책을접할수 있는디바이스 종류가다양해지면서언제어디서나쉽게 접 할수있는분야로떠오르고있다. 틈새시장에서단일시장으로입지를다져나가고있는전세계온라인출판시장을분석했다.

• Digital Contents
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• no.11 s.162
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• pp.40-43
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• 2006

온라인음악 서비스 시장의 유료화가 자리 잡아가고 있다. 아지도 온라인음악 서비스 업체. 음원저작권자, 소비자 간 날 선 대립과 갈등이 지속되고 있지만 온라인음악시장이 전체 음악시장을 주도할 것이라는 점에선 이견이 없는 듯하다. 이를 반영하듯 온라인음악업계는 차별화된 서비스를 기반으로 유료화라는 새롭게 변화된 환경에 점차 적응하는 모습을 보이고 있다.

• Economic and Environmental Geology
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• v.47 no.5
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• pp.467-477
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• 2014

Naturally occurring asbestos (NOA) occurs in rocks and soils as a result of natural weathering and human activities. The asbestos have been associated with ultramafic and mafic rocks, and carbonate rock. The previous studies on NOA were mainly limited to ultramafic and mafic rock-hosted asbestos in Korea. But, studies on carbonatehosted asbestos are relatively rare. Therefore, the purposes of this study were to investigate mineralogical characteristics of carbonate-hosted and metapelite-hosted NOA and to examine genesis of NOA occurred in the both rocks. The study area was Daerori, Seosan, Chungnam Province, Korea. The major rock formation consisted of limestone and schist which have been known to contain asbestos. Sampling was performed at outcrop which contained carbonate rock showing acicular asbestos crystals as well as pegmatitic intrusion that contacted with carbonate rock. PLM, XRD, EPMA, and EDS analyses were used to characterize mineral assemblages, mineralogical characteristics, and crystal habits of amphiboles and other minerals. BSEM images were also used to examine the genesis of asbestos minerals. The amphibole group was observed in all of the carbonate rocks, and actinolite and tremolite were identified in all rocks. These mineral habits were mainly micro-acicular crystals or secondary asbestiform minerals on the surface of non-asbestiform minerals appearing split end of columnar crystals produced by weathering. BSEM images showed residual textures of samples. The residual textures of carbonate rocks showed dolomite-tremolite-diopside mineral assemblages that formed during prograde metasomatism stage. Some carbonate rock also showed diopside-tremolite-talc mineral assemblages which were formed during retrograde metasomatism stage, as the residual textures. In result the presence of asbestos actinolite-tremolite in the carbonate rocks were confirmed in the areas where actinolite-tremolite asbestos was influenced by low temperature hydrothermal solution during metasomatism stage. These asbestos minerals showed the acicular asbestiform minerals, but even non-asbestiform minerals, a bundle or columnar shape, could transform to asbestiform minerals as potential NOA by weathering because the end of columnar shape of non-asbestiform minerals appeared as multiple acicular shaped fibers.

• The Journal of the Petrological Society of Korea
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• v.9 no.2
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• pp.99-118
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• 2000

The variation of Na(A), K, Na(M4), A l O and Al(VI)+Fe3++Ti+Cr in the zonal amphiboles from the amphibolites of the Hwanggangri area indicates that the tschermakite-, edenite- and glaucophane substitutions are higher in the rim than in the core, in which actinolite changes to hornblende with going outward from core to rim. The contents of substitutional elements of hornblende~ of three samples@l29-2, M76-2, M78), which include diopside and greenish brown hornblende and are thought to represent the highest metamorphic grade, are lower than those of rim homblendes of the lower metamorphic grade and are higher than those of core actinolite that they conform to the middle domain in those of the whole amphiboles. Considerations about the origin of zonal amphiboles are as follows. Firstly, two samples(R102-1, R210-9) have the same amphibole composition like core is actinolitic hornblende, and rim is magnesian hastingsite although plagioclases such as albite(R102-1) and labradorite (R210-9) show the wide compositional difference. It is impossible to produce both albite and labradorite by one metamorphic event. Judging from this wide compositional difference, the existence of zonal amphiboles does not indicate the miscibility gap but is thought to be the result of the polymetamorphism. Secondly, the crystallographically sharp and gradational interfaces between actinolite and hornblende fonned in the amphibolites rgardless of the distance from the granite. In case of the samples(R210-9, M128, M130) having the sharp interface between two amphiboles, the plagioclase show the compositions produced at the low grade and the medium grade. Because such variable compositions of plagioclase indicates the overprinting of metamorphism of higher metamorphic grade than that of the formation of miscibility gap, it implies that zonal amphiboles were formed by polymetarnorphism. In case of the gradational interface between two amphiboles, this texture is also thought to be the effect of polymetamorphism from the fact that this texture mainly occur near the granite and from the consideration of the metamporphic grade. The relationship between the compositional variations of the amphiboles and the pressure types of metamorphism suggests that actinolitic core is considered to be grown by the metamorphism of medium pressure, while hornblende rim is shown to have genetic relations with the metamorphism of low pressure type.

• Journal of the Mineralogical Society of Korea
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• v.28 no.4
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• pp.333-341
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• 2015

As results of X-ray diffraction analysis, samples of asbestos and soil were composed maily of dolomite ($CaMg(Co_3)_2$, tremolite ($Ca_2Mg_5Si_{18}O_{22}(OH)_2$), actinolite ($Ca(Mg,\;Fe)_6Si_8O_{22}(OH)_2$), talc ($Mg_3Si_4O_{10}(OH)_2$), calcite ($CaCO_3$) and small amounts of quartz ($SiO_2$) and clay minerals. The average size of asbestos fibers was about $100{\mu}m$ and maximum of some asbestos was $250.0{\mu}m$ in length. The aspect ratio of asbestos fiber were over 3 : 1 and inclined extinction in the range of $8.0-19.5^{\circ}$. Single isolated fragments of asbestos are probably fiber and acicula form in crystal edge along the cleavage plane. Tremolite that composed main asbestos mineral in rock and soil around Dong-a mine is higher content of Fe than actinolite asbestos.

• Digital Contents
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• no.9 s.160
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• pp.30-31
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• 2006

지난2001년출범한한국과학기술정보연구원(KISTI)은현재국내외적으로가장주목받는과학기술정보유통분야의연구기관이다. 출범1년만에공공기술분야의정부출연기관중경영성과1위에오른것을비롯해 과학기술정보유통분야의선진국이라고자부하는일본에서도이기관이구축한시스템을벤치마킹하기도했다. 불과5년이라는짧은기간에정상에올라설수있었던것은KISTI 구성원들의열정과노력이있었기때문. 그런데 KISTI 에서는 유독‘ 독종’, ‘ 불도저’등으로 불리는 인물이 있다. 주인공은 지난달 퇴임한 조영화 전KISTI 원장이다. 업무추진력이뛰어나고, 일단시작한일은반드시마무리를해야하는성격탓에붙은별명. ‘ 용장밑에약졸없다’는고사는조전원장과KISTI 직원들에게딱어울리는말이다.