• Proceedings of the Korean Society of Precision Engineering Conference
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• 2004.05a
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• pp.73-73
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• 2004

현대 산업기술발달과 구조변화는 각 국에서 생산되는 제품과 원자재 등의 상호교역을 더욱 활발하게 하였다. 이러한 수요 증대에 부응하기 위하여 각 국에서는 물자의 원활한 운송과 처리를 위한 연구가 계속 이루어지고 있는 실정이며, 최근에는 규격화된 컨테이너를 이용하여 한 번에 많은 양의 물류를 여러 국가로 운반할 수 있는 초대형 컨테이너선과 이를 항만에서 양ㆍ적하 하기 위한 컨테이너 크레인과 같은 항만하역장비에 관한 연구가 활발하게 진행되고 있다.(중략)

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2004.05a
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• pp.102-102
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• 2004

산업과 경제의 발달로 그 수요가 급속도로 증대되고 있는 항만물류를 처리하기 위한 여러 가지 항만하역장비에서 가장 핵심은 컨테이너를 선박에 양ㆍ적하하는 장비인 컨테이너 크레인이라 할 수 있다. 최근에는 이러한 컨테이너 크레인도 초대형 컨테이너선의 출현으로 인하여 이에 맞는 구조나 작동 방식을 보유할 수 있도록 연구가 활발히 진행되고 있다.(중략)

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2005.10a
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• pp.241-246
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• 2005

This study is carried out to analyze the stability of a container crane in according to the change of a wind direction and a machinery house location when a wind load of a wind velocity, 75m/s was applied on the state stowing a container crane by a heavy wind A design wind load applied to this study was calculated in observance of 'Load Criteria of Building Structure'. And we analyzed the reactions of each supporting points according to appling a wind direction to an interval of $15^{\circ}$ in $0^{\circ}\~180^{\circ}$ and the structure stability of a container crane according to changing a machinery house location occupying $15\%$ of a container crane weight. From a results of this study, we presented a design criteria of an overturning disturbance equipment, tie-down.

• Journal of the Korean Society for Precision Engineering
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• v.22 no.2
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• pp.148-155
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• 2005

This study was carried out to analyze the effect of direction of wind load and machinery house location on the stability of container crane loading/unloading a container on a vessel. The overturning moment of container crane under wind load at 50m/s velocity was estimated by analyzing reaction forces at each supporting point. And variations of reaction forces at each supporting point of a container crane were analyzed according to direction of wind load and machinery house location. The critical location of machinery house was also investigated to install a tie-down which has an anti-overturning function of container crane at the land side supporting point.

• Digital Contents
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• no.8 s.123
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• pp.35-36
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• 2003

월간 [디지털콘텐츠]에서는 2003년 상반기 디지털콘텐츠 분야 '히트콘텐츠'를 선정해 발표한다. 2003년 상반기 히트콘텐츠는 본지 기자단의 평가를 통해 선정됐다. 또한 업계 전문가들의 자문과 해당분야의 전문기자가 취재한 자료를 바탕으로 각 분야의 매출과 인지도, 작품성 등을 고려했다. 온라인게임 분야는 엔씨소프트의 리니지2, 콘솔게임은 THQ코리아의 '스맥다운', 애니메이션은 양철집의 '원더풀데이즈', 모바일게임은 컴투스의 '붕어빵 타이쿤2', e-Book은 북토피아의 '한국의 부자들'이 선정됐다.

• Microbiology and Biotechnology Letters
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• v.40 no.1
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• pp.10-16
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• 2012

The Streptomyces peucetius OIM (Overproducing Industrial Mutant) strain is a recursively-mutated and optimally-screened strain used for the industrial production of polyketide antibiotics, such as doxorubicin (DXR). Using the S. peucetius OIM mutant strain as a surrogate host, a model minimal polyketide pathway for aloesaponarin II, an actinorhodin shunt product, was cloned in a high-copy conjugative plasmid, followed by functional pathway expression and quantitative metabolite analysis. The level of aloesaponarin II production was noted as being significantly higher in the OIM strain than in the wild-type S. peucetius, as well as in the regulatory network-stimulated S. coelicolor mutant strain. Moreover, the aloesaponarin II production level was seen to be even higher in a down-regulator $wblA_{spe}$-deleted S. peucetius OIM strain, implying that the rationally-engineered S. peucetius OIM mutant strain could be used as an efficient surrogate host for the high expression of foreign polyketide pathways.

• Journal of Software Assessment and Valuation
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• v.16 no.1
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• pp.65-79
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• 2020

As Programmable Logic Controllers (PLCs), popular components in industrial control systems (ICS), are incorporated with the technologies such as micro-controllers, real-time operating systems, and communication capabilities. As the latest PLCs have been connected to the Internet, they are becoming a main target of cyber threats. This paper proposes two sanitizers that improve the security of uC/OS-II based firmware for a PLC. That is, we devise BU sanitizer for detecting out-of-bounds accesses to buffers and UaF sanitizer for fixing use-after-free bugs in the firmware. They can sanitize the binary firmware image generated in a desktop PC before downloading it to the PLC. The BU sanitizer can also detect the violation of control flow integrity using both call graph and symbols of functions in the firmware image. We have implemented the proposed two sanitizers as a prototype system on a PLC running uC/OS-II and demonstrated the effectiveness of them by performing experiments as well as comparing them with the existing sanitizers. These findings can be used to detect and mitigate unintended vulnerabilities during the firmware development phase.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2006.05a
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• pp.373-374
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• 2006

This study is carried out to analyze the stability of a container crane in according to the change of a wind direction and a machinery house location when a wind load of a wind velocity, 75m/s was applied on the state stowing a container crane by a heavy wind. A design wind load applied to this study was calculated in observance of 'Load Criteria of Building Structure'. And we analyzed the reactions of each supporting points according to appling a wind direction to an interval of $10^{\circ}\;in\;0^{\circ}{\sim}180^{\circ}$ and the structure stability of a container crane according to changing a machinery house. location occupying 15% of a container crane weight. From a results of this study, we presented a design criteria of an overturning disturbance equipment, tie-down.

• Journal of the Society of Naval Architects of Korea
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• v.48 no.2
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• pp.165-170
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• 2011

In this paper, wind force coefficient by wind tunnel experiment is obtained to compute the accurate wind force of the gantry crane model to be used for mobile harbor ship. The first crane model was tested under 20, 30, 40, 52m/s, partially 58m/s and the wind force coefficient is about 2.0 which is very close to the suggested theoretical value. The other is the more reliable crane model and tested under 20, 30, 40m/s also giving the similar realistic wind force coefficient. Also structural analysis of crane model was performed giving the reliable stress level. Since the rolling effect is important for mobile harbor ship, the safety of the crane on the ship needs to be guaranteed. For this, using the computed reaction forces, a tie-down design is suggested which connects the crane and ship to resist the turnover motion of the crane.

• The Journal of the Convergence on Culture Technology
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• v.6 no.4
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• pp.347-357
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• 2020

This study intended to examine the nature of image which uses the network as the medium in the context of 'post-internet art' and categorize and analyze the cases of applications within art images. In the post-internet art which embraces the background of Web 2.0 and extended digital and network environment, image is transformed and re-mediated into various formats beyond fixed forms. Hito Steyerl defined the image, copied, downloaded, and reedited digitally in low quality as 'poor image.' Young artists, the digital native generation, capture and re-contextualize the changed network environment and depict it in various images. In this context, the application of image in post-internet art can be categorized and analyzed into the 'Image Collected as Material' produced by collecting and recomposing images found in social media, operating system, and website, 'Image Processed through Work' which is newly processed and re-contextualized by using editing programs, and 'Combined Digital-Reality Image' which represents the section of the digital society as the film and image that combine virtuality and reality.