• Proceedings of the Korea Information Processing Society Conference
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• 2008.05a
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• pp.617-620
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• 2008

기존의 백업 시스템은 대부분이 Tape Media나 디스크를 이용하여 구축되어 왔다. 하지만 점차 백업 용량의 증가와 백업장치의 물리적 장애, 복구시간 증가 등의 문제에 직면하게 되었다. 본 논문에서는 이러한 문제점들을 해결하기 위해 보다 효과적이고 빠른 시간에 백업 및 복구가 가능하도록 스토리지 가상화와 VTL기술을 이용한 백업 시스템 구축에 대한 연구를 진행한다.

• Journal of the Korean Magnetics Society
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• v.7 no.6
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• pp.314-320
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• 1997

We have observed the orientation behavior of acicular iron oxides in magnetic layer of the particular magnetic tape after magnetic paint was coated on polyester film. As results of the static orientation, orientation of iron oxides come to the maximum at the front and the back of orientation magnets, but it was a litter lower at the back than at the front, and it slowly decreases and come to the constant level after passing through the orientation magnets. In case of edge portion to be futher away from center in the coated film, the orientation of iron oxides in magnetic layer come to worse than that of the center. We think it is owing to the shape and the magnetic magnitude of orientation magnets. The results of the dynamic orientation are as follows. As the orientation of iron oxides in the particulated magnetic tape is higher, the output properties of tape come to better than ever. And the orientation of iron oxides can be changed by drying condition, as result, the output properties of tape can be also. Therefore we think the considrations of the design of orientation magnets and the control of drying condition are needed to improve output properties of the particulated magnetic tape.

• Journal of agriculture & life science
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• v.46 no.2
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• pp.35-42
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• 2012

This study was conducted to investigate growth responses at 45 days after cutting in six Sedum cultivars (S. reflexum 'Blue Spruce', S. rupestre 'Angelina', S. sexangulare, S. sexangulare var. elatum, S. spurium 'Atropurpureus', S. takesimense) using vegetation mats (individual coir tape and jute treated with different thicknesses and soil compositions) to broaden usefulness of evergreen Sedum cultivars. All the treatments including both single and interaction between treatments showed significant effects (p<0.001) on the number of branches, plant height, and shoot fresh weight except the number of branches treated with different mat types. No. of branches was showed two times in compost than in sand regardless of cultivars and mat types with the exception of S. takesimense showing no added branches in all treatments. Each plant height of all the cultivars except 'Angelina' showed the highest value under the conditions treated with 5 mm thick coir tape using compost. The fresh weight of 'Blue Spruce' treated with 5 mm thick coir tape using compost was 13.19 g of which value was the highest in all treatments. The better growth response in all Sedum cultivars was shown in the treatment of 5 mm thick coir tape than with jute net treatment.

• Composites Research
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• v.12 no.2
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• pp.91-100
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• 1999

The manufacture of high strength polyethylene(HSPE) tape yarns has been accomplished by a solid state processing(SSP) method as the compaction of ultra-high molecular weight polyethylene(UHMWPE) powders and drawing of the compacted film under the melting point without any organic solvents. In this study, the characteristics of HSPE tape yarns produced by SSP which is desirable for production cost and environmental aspect were analyzed. As the results, tensile strengths of HSPE tape yarns increased with increasing the draw ratio and the fracture morphology of highly drawn HSPE tape yarns showed more fibrillar shape than the low drawn one. Interfacial shear strengths of HSPE tape yarns with vinylester resin increased by $O_2$ plasma treatment and maximum interfacial shear strength was obtained in the plasma treatment condition of 100W and 5min. In addition, mechanical properties of HSPE tape yarn reinforced composites were investigated and compared with those of the gel spun HSPE fiber reinforced composites.

• Proceedings of the Korea Information Processing Society Conference
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• 2002.11c
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• pp.2395-2398
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• 2002

국내의 반도체산업의 비약적인 발전과 함께 반도체 장비의 국산화에 대한 시도가 점차로 확산되어 가고있다. 최근 일본의 수입장비에만 의존하던 웨이퍼 테이프 마운터 (Wafer Tape Mounter) 장비가 국산화됨으로써 원가절감에 크게 기여하였다. 본 논문에서는 국산 웨이퍼 테이프 마운터 장비의 동작을 제어하는 운영 소프트웨어에 대해서 기술한다. PLC 기반의 기존 외국 장비와는 달리 국산 장비는 PC 기반으로 동작함으로써, 제어 소프트웨어의 역할이 훨씬 커지게 되었고, 기능의 추가 변경이 용이한 점이 장점이다. 소프트웨어는 여러개의 장치 (모터 등)을 동시에 구동하기 위한 효과적인 멀티스레딩 구조를 갖는다. 우리의 조사에 따르면, PC기반 웨이퍼 테이프 마운터의 제어 소프트웨어에 대한 연구는 거의 발표된 적이 없었다.

• The Proceeding of the Korean Institute of Electromagnetic Engineering and Science
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• v.6 no.4
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• pp.48-56
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• 1995

In this paper, the telemetry data processing system based on PC is developed. It acquires each channel information from magnetic tape(MT) which stores all the flight data. This system has advantages which reduce the number of hardware components required and simplfy the processing procedure compared to the existing systems.

• Journal of the Korean Institute of Telematics and Electronics
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• v.14 no.6
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• pp.16-25
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• 1977

In this paper is studied a method of interfacing microcomputer system with an ordinary cassette tape recorder The use of a parallel interface adapter has made it possible not only to construct a byte in software method but also to control noter operation of the recorder. Considerable improvement of the data handling speed is accomplished in spite of a relatively simplified network configurations.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.6
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• pp.2458-2464
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• 2012

Recently, component materials for display are being developed into higher value-added industries which can strengthen national industrial competitiveness. However, a system for production of component materials for display is nearly depending on import, and its development level is inadequate. For this reason, localization of the embossing treatment system for production of the spacer tape and system improvement for increasing of productivity are needed. Therefore, in this paper, we propose rotary type embossing process system for spacer tape production for localization of system and increasing productivity. The system consists of unwinding, forming, cleaning, winding and testing parts. The mold of forming part is designed to rotary type. And we designed each part and made a prototype to test its performance. We measured embossing shapes, diameter and distance between each embossing and opposite embossing using three coordinate measuring machine. Also, we measured impurity level and the number of impurity particles of sample through the testing and cleaning part. Additionally, the productivity of spacer tape produced by the prototype is measured.

• Journal of the Korean Ceramic Society
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• v.35 no.2
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• pp.137-144
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• 1998

High-temperature superconducting joints between 61 filaments of Bi-2223 tapes were fabricated by chem-ical corrosion and repeated thermomechanical process. The silver sheath of the superconducting tape was chemically removed using chemical etchant(NH4OH:H2O2=1:1) from one side of each tape without altering the form of lap joint. The joined region was formed by uniaxial pressing and a series of thermomechanical process and then subjected to properties measurement and microstructural analysis. The critical current(Ic) variation and I-V characteristics along the joint were mesured with several configuration of proble points. Ic value of the transition region of the joint inthe multifilament tape which limit the total current carring capacity of the superconducting tape was higher than that of monofilament tape. But the transition ex-ponent n-value of the multi-filament tape was lower than that of monofilament wire due to the interaction of the individual superconducting core of the multi-filament. The critical current through the joint area was improved by respeated press and reaction annealing treatment.

• 대한방사선방어학회:학술대회논문집
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• 2011.04a
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• pp.104-105
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• 2011