• Title, Summary, Keyword: IT자원

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Classification of Deep-sen Sediment by Geotechnical Properties from the KODOS Area in the C-C Zone of the Northeast Equatorial Pacific (북동태평양 클라리온-클리퍼톤 균열대 KODOS 지역 심해저 퇴적물의 지질공학적 특성에 따른 유형분류)

  • Chi, Sang-Bum;Hyeong, Ki-Seong;Kim, Jong-Uk;Kim, Hyun-Sub;Lee, Gun-Chang;Son, Seung-Kyu
    • Ocean and Polar Research
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    • v.25 no.4
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    • pp.529-543
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    • 2003
  • Deep-sea surface sediments, acquired from 1997 to 2002 in the Clarion-Clipperton fracture zone of the northeast equatorial Pacific, were analyzed for index and geotechnical properties to provide background information for the design of manganese nodule minor. The sediments were classified into 16 types based on the measured properties and evaluated in terms of miner maneuverabillity and potential environmental impacts arising from mining activities. It was found that the middle part of the study area covered with coarse siliceous sediments is more favorable to the commercial production than the northern part of pelagic red clay. In particular, Area B2 in the middle part is considered the best mining site since it shows the highest abundance as well as it consists mostly of normally to over consolidated (types B, C, D) coarse siliceous sediments that are appropriate for effective minor movement and accompany weak environmental impacts. Taking account of all the analyzed core logs, the average shear-strength values are proposed as a practical guideline fur movements of a manganese nodule miner: 6.0 kPa at 10cm and 7.0kPa at 40cm below the seabed.

Development of Water Treatment System Using Non-contact Plasma (비접촉식 플라즈마 수처리 장치(플라투스) 개발)

  • Lee, Min-ki;Jeong, Byung-jo;Park, Jun-hyung;Jo, Gil-hwoan
    • Proceedings of the KIPE Conference
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    • pp.117-119
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    • 2012
  • Plasma Water Treatment, a Unique System(PLATUS) of algae(Chl-a) removal efficiency is average 90.6 up to 99.6%, It is cost effective facility because it doesn't need any other chemicals and consumables. Also, It is Eco-friendly installation with no sludge. It is easy to transform its treatment capacity by the number of Plasma installation. As it requires small space for installing, It can be installed in Land nearby water, vehicle mounted, and set on the ship.

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Estimation of in-situ Stresses and the Effect of a Preexisting Inclined Fracture by Hydraulic Fracturing (수압파쇄를 이용한 초기지압측정과 기존경사균열의 영향)

  • 신중호;신희순;최성웅;이희근
    • Tunnel and Underground Space
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    • v.4 no.1
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    • pp.55-62
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    • 1994
  • The hydraulic fracturing in a field site was performed for the measurement of in-situ stresses. For the estimation of the effect of a preexisting inclined fracture, the test on a preexisting fracture zone was also conducted. From the measurements at three shallow depths, the ratios of max. to min. horizontal stress showed the range of 1.19-1.56 and the K values showed the range of 2.62-3.86. In case of a preexisting fracture with the inclination of 15 degrees, the stresses calculated as upper bound values by considering it. It seemed from this that the inclination less than 15 degrees had small effect on the stress calculation.

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Political Approach to Creative Improvement of Resources Technology: Domestic Resources Development Industry (우리나라 자원기술의 획기적 증진을 위한 정책적 접근: 국내 자원개발산업)

  • Lee, Ok-Sun;Lee, Jae-Wook;Kim, Seong-Yong;Choi, Seon-Gyu;Ahn, Eun-Young
    • Economic and Environmental Geology
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    • v.41 no.5
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    • pp.541-549
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    • 2008
  • Though the demand of a leading role of resources technology and fosterage of the resources industry has increased in Korea, it is difficult for the existing investment and management of its R&D to lead to be the same level of those in more advanced countries within a short period. Therefore, in order to strengthen the resources technology system it needs to set up systematic plan or strategy, to resolve shortage of professional human forces, and to expand the investment of private technology development. In this study, we suggest the concept redefinition of resources technology and resources development industry, the establishment of expanded R&D investment system, to offer professional human forces and to reestablishment of the infrastructure for creatively improving resources technology.

Fabrication of Porous Nano Particles from Al-Cu Alloy Nano Powders Prepared by Electrical Wire Explosion (전기선 폭발법으로 제조된 Al-Cu 합금 나노분말을 이용한 다공성 나노 입자 제조)

  • Park, Je-Shin;Kim, Won-Baek;Suh, Chang-Youl;Ahn, Jong-Gwan;Kim, Byoung-Kyu
    • Journal of Korean Powder Metallurgy Institute
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    • v.15 no.3
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    • pp.234-238
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    • 2008
  • Al-Cu alloy nano powders have been produced by the electrical explosion of Cu-plated Al wire. The porous nano particles were prepared by leaching for Al-Cu alloy nano powders in 40wt% NaOH aqueous solution. The surface area of leached powder for 5 hours was 4 times larger than that of original alloy nano powder. It is demonstrated that porous nano particles could be obtained by selective leaching of alloy nano powder. It is expected that porous Cu nano powders can be applied for catalyst of SRM (steam reforming methanol).

Effects of IT Resources on the Work Efficiency and Corporate Performance in The Mobile Smart-Work Environment (모바일 스마트워크 환경에서 IT자원이 업무효율성과 기업성과에 미치는 영향)

  • Lee, Min-Woo;Oh, Min-Jeong;Kim, Seung-Chul
    • Journal of Digital Convergence
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    • v.14 no.5
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    • pp.165-176
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    • 2016
  • The purpose of this study is to examine the effects of the IT resources on the work efficiency and corporate performance in Mobile Smart-Work Environment with IT convergence Technology by applying the Resource-Based View. The study has an academic meaning by empirically analyzing the effects of factors identified based on the existing study on the IT resources in Mobile Smart-Work, and practical implications to identify how the significance of the Mobile Smart-Work used as a platform of variety industries in manufacturing, logistics, service, distribution, finance, public institutions, and so on positively affects improvement of corporate efficiency and performance. The results showed that IT Infrastructure and IT skills in the Mobile Smart-work environment were found to bring positive effects on individual work efficiency, and IT skills had positive influence on team work efficiency. Also, we confirmed the individual and team work efficiency positively affect financial and market performance of business firms. Finally, we expect that business firm equipped with IT resources in the Mobile Smart-Work environment with IT convergence Technology. It can improve this work efficiency and the performance, which leads to strengthening the core competency.

Determinants and Performance of Port Logistics Service Quality (항만물류서비스품질의 결정요인과 성과분석)

  • Park, Jung-Hee;Woo, Su-Han
    • Journal of Korea Port Economic Association
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    • v.31 no.3
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    • pp.15-39
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    • 2015
  • This paper investigates the determinants of port service quality from a resources-based approach. The research model is derived from the relevant literature in port management, service quality, and resource-based theory. It is hypothesized that tangible and intangible resources contribute to port service quality, which in turn leads to the enhancement of reputation and loyalty to ports. To test this, a questionnaire survey is undertaken on three major ports in Korea: Busan, Incheon, and Gwangyang; the collected data are then analyzed using partial least squares. It is suggested that both tangible resources and intangible resources have a positive influence on general service quality and that general service quality has a positive influence on customer satisfaction, thus improving port reputation and loyalty. The contribution to the literature is that resource-based theory is applied to a port service quality model and the model is verified. In addition, an augmented model is adopted to examine the effect of individual resources on service quality. It is also possible for port managers to use the constructs to monitor their resources and develop more specific strategies to gain reputation and loyalty from customers.