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이주영,문대성,김익균,Lee, J.Y.,Moon, D.S.,Kim, I.K. 한국전자통신연구원 2020 전자통신동향분석 Vol.35 No.1
Currently, cybersecurity technologies are primarily focused on defenses that detect and prevent cyberattacks. However, it is more important to regularly validate an organization's security posture in order to strengthen its cybersecurity defenses, as the IT environment becomes complex and dynamic. Cyberattack simulation technologies not only enable the discovery of software vulnerabilities but also aid in conducting security assessments of the entire network. They can help defenders maintain a fundamental level of security assurance and gain control over their security posture. The technology is gradually shifting to intelligent and autonomous platforms. This paper examines the trends and prospects of cyberattack simulation technologies that are evolving according to these requirements.
측면충돌시 최적의 PADDING 및 AIRBAG 설계를 위한 해석적 방법
이주영(J.Y.Lee),이인택(I.T.Lee),한성준(S.J.Han),박관흠(K.H.Park) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.11_2
Generally, there are two analysis tools in crash simulation, which are F.E.M code and Multi-Body Dynamics code. The analysis using F.E.M code needs much computing hours. The analysis using Multi-Body Dynamics code needs the experimental data of components. This study presents the coupling method to compensate the limitations of those analysis methods. Using the coupling method, the optimization is done in the padding and the side airbag system. MADYMO and PAM-CRASH are used in this study.<br/>
이주영(J. Y. Lee),강무진(M. Kang) 한국정밀공학회 2004 한국정밀공학회 학술발표대회 논문집 Vol.2004 No.10월
Design of manufacturing system is a very complicated and tricky process. Since no efficient method has been known, yet it has been mainly done based on experience and heuristics. Even mostly used simulation approaches can only evaluate the performance of an already configured system, but cannot provide a help to configure or reconfigure a manufacturing system. An efficient way to (re-)configure manufacturing systems might be to use building blocks of a manufacturing system in the similar manner the recent products are configured based on modular principle. In this paper, the concept of a building block and its representation method are described. An example of assembly system configuration is also given.
Biofabrication of in Vitro Vascular Model Using 3D Bioprinting Technology
J. Lee(이주영),H. Lee(이형석) Korean Society for Precision Engineering 2021 한국정밀공학회 학술발표대회 논문집 Vol.2021 No.11월
In the human body, there are various flow environments of laminar and turbulent flow in large blood vessels. However, there are fewer models that can mimic the aorta or coronary artery. Despite advances in tissue-engineering technology, there are few technologies that can manufacture large-scale in vitro vascular models. Additionally, few devices are capable of culturing large-scale in vitro vascular models. In these days, 3D bioprinting technology is an emerging technology that can manufacture 3D biological structures. However, there still remain several problems in printing large-scale in vitro vascular models. For example, when printing large-scale in vitro vascular models using a coaxial method with extrusion-based bioprinting, it was difficult to print large-scale vascular structures due to the difficulties in controlling the bioink and collapsing of the vascular structures during the printing process. Therefore, in this study, large-scale in vitro vascular models were fabricated using UV cross-linkable bioinks. The physical properties of bioinks were confirmed by rheological test. Furthermore, to confirm the biocompatibility of UV cross-linkable bioinks, proliferation and cytotoxicity tests of HUVECs were conducted. Consequently, it was confirmed that it was easy to manufacture large-scale in vitro vascular models over 5 mm diameter using UV cross-linkable bioinks and bioprinting technology.
Comparison of Fast Neutron Rates for the NEOS Experiment
Y. J. Ko,C. H. Jang,Kim Siyeon,J. Y. Kim,H. S. Kim,K. M. Seo,B. Y. Han,G. M. Sun,E. J. Jeon,Jaison Lee,M. H. Lee,Y. M. Oh,K. S. Park,K. K. Joo,B. R. Kim,H. J. Kim,이주영,Y. D. Kim,H. K. Park,H. S. Park 한국물리학회 2016 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.69 No.11
The fast neutron rates are compared at the site of the NEOS (Neutrino Experiment Oscillation Short baseline) experiment, a short-baseline neutrino experiment located in a tendon gallery of a commercial nuclear power plant using a 0.78-liter liquid scintillator detector. A pulse shape discrimination technique is used to identify neutron signals. The measurements are performed during the nuclear reactor-on and -off periods, and the fast neutron rates are found to be consistent with each other. The fast neutron rate is also measured at an overground site with a negligible overburden and is found to be ∼ 100 times higher than that at the site of the NEOS experiment.