• 전기의세계
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• v.39 no.6
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• pp.42-49
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• 1990

반도체 조립과 관련하여 다이본딩 시스템, 와이어본딩 시스템 및 인라인 시스템의 구성 및 기능을 살펴보고, 자동화를 위해 필요한 관리제어, 시각처리 및 통신에 대하여 간략하게 알아보고자 한다.

• Journal of the Korean Vacuum Society
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• v.15 no.1
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• pp.57-63
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• 2006

We have examined the electrical and optical characteristics of the plasma display panel(PDP) produced by vacuum in-line sealing technology. We found that the luminous efficiency was decreased as the base vacuum level was increased. For the base vacuum level of $1\times10^{-3}$ Torr, the firing voltage was 235V at the discharge gas pressure of 400 Torr and the luminous efficiency was 0.8 lm/W at 180V sustaining pulse. However, for the base vacuum level of $1\times10^{-6}$ Torr, the firing voltage was reduced to 215V and the luminous efficiency was improved to 2.5lm/w. Finally, we demonstrated successfully the operation of tip-less PDP fabricated using vacuum in-line sealing method.

• Journal of the Korean Society of Clothing and Textiles
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• v.30 no.6 s.154
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• pp.904-915
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• 2006

The purpose of this study is to develop and examine an in-line skating uniform that is also suitable for everyday wear, through research on the dressing needs of skaters. The results of this research are as follows: when asked about the garment, ordinary clothes were more inconvenient than professional uniform. In the case of the upper garment, the skaters who dressed in ordinary clothes felt the most inconvenience in the part of sleeve, back side of bottom and width. The skaters who dressed in professional in-line uniforms felt the most inconvenience in the part of neck girth, of sleeve, back side of bottom. In the case of the lower garment, the skaters who dressed in ordinary clothes felt the most inconvenience in the knee, crotch and hip. The skaters who dressed in professional in-line uniforms felt the most inconvenience in the hip and crotch. Damage due to wear was shown up the hip, knee, side of thigh and shoulder. The answer rate was high that the ordinary clothes usually wore out and the uniform used to tear out in the form of clothes damage. An appropriate sample pattern was made up, based on the problems revealed in the results of the questionnaire analysis. Evaluation of samples was used linear Measurement (5 point preference scale) by organized with 15 male and female's subjects group and 12 observer group.

• Korean Journal of Applied Biomechanics
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• v.18 no.4
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• pp.191-199
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• 2008

The purpose of this study was to analyze movement of inline skate players at inline roller skate T300m start so that we can find effective starting movement, and provide basic and scientific materials in improving performance of inline roller skaters for T300m inline roller skating. In doing so, five Korean national representative inline skaters who elected in 2008 Korean National Inline Roller Skating Cup were taped during the cup and analyzed through 3D viewing in terms of their starting movement Conclusions of the analysis were as follows: First, the better the record of starting phase is the shorter average of contact time on track. Second, to improve starting speed, players raised their body just like running instead of lowering them when gliding. players could shorten their strike and moved faster in order to accelerate, and it was more effective to speed up when they quickly switched from running to gliding. Third, the five country-representative players speeded up by bending their knees to a greater degree in order to improve stability. And then the most effective way was believed to minimize track connection of skating at starting in each phase.

• Composites Research
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• v.29 no.2
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• pp.73-78
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• 2016

In this paper, The concept of a wheel with carbon fiber composite is to replace the conventional material used for a wheel hub, such as plastic, with a disk-type hub made of carbon fabric and epoxy resin. The impact load from the ground under real conditions was considered; a low-velocity impact test was conducted to evaluate the impact performance of the carbon wheel and compare it with that of a conventional plastic wheel. This study applied a 70 J impact load as a test condition. The impact energy was controlled in the test by adjustment of height and weight of impactor. The use of a carbon disk wheel hub was confirmed to reduce weight and generate an excellent repulsive force at low energy under conditions similar to real driving conditions. The results showed that the maximum load increased proportionally depending on the impact load, but the growth of the maximum load was reduced at a 20 J impact load and tended to decrease at a 45 J impact load. The carbon wheel showed excellent properties ; the level of rebounding was 35.3% and 19.1% of the total impact energy at impact loads of 5 J and 10 J, respectively. On the other hand, the carbon disk wheel rebounded less than 5% of the total energy due to crack generation of the thin carbon hub for impact loads of more than 20 J.

• Korean Chemical Engineering Research
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• v.55 no.2
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• pp.180-189
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• 2017

Pharmaceutical co-crystals primarily to improve the solubility as well as stability of insoluble drug are to be investigated more intensively for IMDs as US FDA has reclassified co-crystal as a special case of solvates in August this year. In this study, we proposed a mechanism of indomethacin-saccharin co-crystal formation and the creation of transient indomethacin meta-stable form using in-line monitoring tools with the addition rate of anti-solvent as a critical process parameter. Among various instruments, we combined PVM (particle vision measurement) and FBRM (focused beam reflectance measurement) for the in-line monitoring of anti-solvent co-crystallization process. The off-line characterization of resulting powders was carried out employing the PXRD (powder x-ray diffraction) and DSC (differential scanning calorimeter). It was observed that the pathway to the final IMC-SAC co-crystal was significantly dependent upon the anti-solvent addition rate. The process conditions to obtain high quality co-crystal powder effectively were established. Consequently, we concluded that in-line monitoring combing the PVM and FBRM should be useful for the in-line monitoring of pharmaceutical co-crystallization processes.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2013.05a
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• pp.1341-1342
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• 2013

• 프린팅코리아
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• s.36
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• pp.168-170
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• 2005

인쇄물에 대한 품질의 요구 및 짧은 납기, 단가에 대한 부담 등은 인쇄사가 가지고 있는 당면 해결 과제이다. 최근 들어서는 글로벌화에 맞추어 국제적인 경쟁력까지도 강하게 요구되고 있어 부담의 이중고를 겪고 있다. 이에 대한 인쇄사의 대응 전략으로서는 특수 효과를 통한 제품의 다양화와 토털 인라인 생산 공정을 통한 적기 인쇄 생산, 경비절감을 통한 생산 능력의 최대 활용 및 자원 활용 등을 들 수 있다.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2008.06a
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• pp.529-530
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• 2008

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2008.06a
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• pp.931-932
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• 2008