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자외선 경화형 변성 (3,4-epoxycyclohexane)methyl 3,4-epoxycyclohexylcarboxylate 아크릴레이트의 합성
이종민,이환표,이상건,박형남,최광식,김도진,Lee, Jongmin,Yi, Hwanpyo,Lee, Sanggun,Park, Hyungnam,Choi, Kangsik,Kim, Dojin 한국재료학회 2017 한국재료학회지 Vol.27 No.4
In this study, (3,4-epoxycyclohexane)methyl 3,4-epoxycyclohexylcarboxylate acrylate was synthesized by reacting (3,4-epoxycyclohexane)methyl 3,4-epoxycyclohexylcarboxylate with acrylic acid to minimize hardening shrinkage and to improve heat resistance, which are known as disadvantages of photopolymers for 3D printing application. Urethane acrylate was synthesized by reacting 1,3,5-triazine-2,4,6-triamino alcohol, 2-hexylethyl acrylate, and isophorone diisocyanate in order to improve the mechanical properties without deteriorating the heat resistance. The physical properties before and after the synthesis of the acrylate and the mechanical properties when the urethane acrylate was applied were investigated. The reaction progress of the composite was examined by FTIR and $^{13}C$ NMR. The heat deflection temperature, flexural strength, and surface hardness of the molding were measured. The curing behavior by Photo-DSC ultraviolet irradiation was also examined.
이종민(Jongmin Yi),진종일(Jongil Jin) 서강대학교 법학연구소 2014 서강법률논총 Vol.3 No.2
A court case regarding copyrightability of an applied art has recently been issued by Seoul Central District Court. The parties to the suit argued upon copyrightability of a kennel which designed with rounded surfaces, and vividely coloured. The issue on the case which this article examines was whether or not the subject, the kennel is eligible for protection by copyright law. Since Korea has revised its copyright back in 2000, applied arts become one of copyrightable categories, by removing the criteria which requires works have certain level of aesthetic values in itself. Long before the revision, the U.S. copyright law embraced applied arts in its scope of the law, specially regarding the fields of industrial design, including graphic, fashion and interior designs. However, even in the U.S., there still are debates on better ways to judging copyrightablility, i.e. separability test on applied arts, which means the boundary of eligibility is still left in a haze. Korea copyright law adopted, in addition to the originality criterion, the separability test in the revised law in 2000, borrowing the reasoning of U.S. federal courts’ decisions. However, unlike in the U.S. where court decisions become primary principles and norms directly to the society, the very vague separability test becomes even more confusing because courts in Korea hardly get chances to scrutinise the test itself. Although the supreme court indeed had a chance to look into the matter in 2004, it did hush up the complex points at issue rather than carefully construct the legal doctrine on applied arts. It now has been over 10 years from the revision, and still the matter remains in a debatable question. This article is to revisit that the separability test is still a unclear standard by looking at a recent court case examined by a trial court, and, therefor to spot out that the inherent problem on copyrightability of applied arts needs more attention from legal experts in order to sustain the legal stability.
이종민(Jongmin Lee),박성렬(Sungyoul Park),오광석(Kwangseok Oh),정용환(Yonghwan Jeong),이경수(Kyongsu Yi) 대한기계학회 2017 대한기계학회 춘추학술대회 Vol.2017 No.11
This paper describes a functional perspective-based approach to fail-safe framework for autonomous driving. Autonomous vehicles have various sensor and actuator configurations in order for fully autonomous driving. In order to prevent fatal accidents caused by faults in sensor or actuator, fail-safe system for autonomous driving is required. The fail-safe framework divided into three parts such as perception, decision, and control has been proposed in terms of functional perspective for autonomous driving. Based on the proposed framework, fail-safe method for autonomous driving has been proposed using sensors and actuators of autonomous vehicle.
종방향 자율주행을 위한 성능 지수 및 인간 모사 학습을 이용하는 구동기 고장 탐지 및 적응형 고장 허용 제어 알고리즘
오세찬,이종민,오광석,이경수,Oh, Sechan,Lee, Jongmin,Oh, Kwangseok,Yi, Kyongsu 한국자동차안전학회 2021 자동차안전학회지 Vol.13 No.4
This paper proposes actuator fault detection and adaptive fault-tolerant control algorithms using performance index and human-like learning for longitudinal autonomous vehicles. Conventional longitudinal controller for autonomous driving consists of supervisory, upper level and lower level controllers. In this paper, feedback control law and PID control algorithm have been used for upper level and lower level controllers, respectively. For actuator fault-tolerant control, adaptive rule has been designed using the gradient descent method with estimated coefficients. In order to adjust the control parameter used for determination of adaptation gain, human-like learning algorithm has been designed based on perceptron learning method using control errors and control parameter. It is designed that the learning algorithm determines current control parameter by saving it in memory and updating based on the cost function-based gradient descent method. Based on the updated control parameter, the longitudinal acceleration has been computed adaptively using feedback law for actuator fault-tolerant control. The finite window-based performance index has been designed for detection and evaluation of actuator performance degradation using control error.
자율주행 자동차를 위한 주행 데이터 기반 종방향 제어기 고장 감지 알고리즘 개발
윤영민,정용환,이종민,이경수,Yoon, Youngmin,Jeong, Yonghwan,Lee, Jongmin,Yi, Kyongsu 한국자동차안전학회 2019 자동차안전학회지 Vol.11 No.2
This paper suggests an algorithm for detecting fault of longitudinal controller in autonomous vehicles. Guaranteeing safety in fault situation is essential because electronic devices in vehicle are dependent each other. Several methods like alarm to driver, ceding control to driver, and emergency stop are considered to cope with fault. This research investigates the fault monitoring process in fail-safe system, for controller which is responsible for accelerating and decelerating control in vehicle. Residual is computed using desired acceleration control command and actual acceleration, and detection of its abnormal increase leads to the decision that system has fault. Before computing residual for controller, health monitoring process of acceleration signal is performed using hardware and analytic redundancy. In fault monitoring process for controller, a process model which is fitted using driving data is considered to improve the performance. This algorithm is simulated via MATLAB tool to verify performance.
저작권법적 대응방향에 따른 1일 미디어의 생존 방안 : P2PTV(Peer-to-peer Internet Television)를 중심으로
박세진(Sejin Park),이종민(Jongmin Yi) 차세대콘텐츠재산학회 2010 콘텐츠재산연구 Vol.1 No.-
지난 6월 서울 중심가에서 열린 촛볼집회에서는 실시간으로 현장 상황을 생중계하는 1인 미디어의 현 주소를 볼 수 있었다. 이처럼 웹2.0과 1인 미디어가 인터넷 헤게모니와 미디어 판도를 바꾸어 감에 따라 저작권법도 많은 변화를 수용하게 되었는데, 소수에 국한되던 창작자와 매개자의 범위가 모두 개인으로 확대되고 있는 것이다. 그 중심에 있는 P2PTV는 융합형 서비스와 1인 미디어라는 속성을 동시에 지니는 탓에 저작권법의 기존 틀을 깨는 새로운 양상을 보이므로 진지한 고찰의 필요성이 제기 된다. 라이브 스트리밍과 P2P네트워크를 기술적인 특징으로 하는 국내의 P2PTV는 그 행위의 자유성 · 광범성으로 인해 다양한 저작권 침해 문제를 야기한다. 이에 저작권자 및 저작인접권자들은 그들의 권리를 침해한 각 개인들 뿐 만 아니라 그러한 침해의 장(場)을 마련해준 OSP에 대한 법적 책임을 물을 가능성이 있는데, 7년여나 지속되고 있는 소리바다 사건들의 쟁점을 검토해 보았을 때, P2PTV 또한 그러한 간접책임을 부담할 가능성이 높다. 그러나, 소리바다와는 달리 현재 운영되고 있는 국내 P2PTV는 저작물 공유만을 위한 서비스가 아니며, 사회에 긍정적인 효용도 주고 있어 이러한 매체와 매체기술이 과거 소리바다와 같이 저작권 문제로 인해 어려움을 겪지 않도록 적절한 대응책을 마련할 필요성이 있다. 그런 점에서 본고는 저작권법의 목적과 균형이 적절히 반영될 수 있는 비즈니스 플랫폼을 제언하면서, 시장을 통한 P2PTV의 생존방안을 살펴보았다. In June 2008, Korea witnessed the rising resentment at the grassroots level not only by off the air broadcast, but by the personalised media on the Internet as well. Along with the fast growing web 2.0 trend, the individual intermediaries are changing the paradigm of media per se, as well as the hegemony on the net, and copyright law has been criticised that the recipients of copyright are extending expeditiously from a few certain legal entities to infinite individuals who might infringe copyright virtually in any way with their seemingly limitless interpretation. P2PTV, characterised as a newly converged intermediary, is at the heart of challenging copyright law to amend in the digital network environment. Given real-time streaming and peer-to-peer network as its two core technical aspects, P2PTV shall be clarified, not into broadcast, but into point-to-point transmission; however, the certain ambiguity of the concept of 'broadcast' could create unstable situation in legal context. Therefore, the debate over the characteristic of streaming, i.e, a real-time Internet transmission, is still edgy. Regardless of the consensus of the debate over the interpretation of 'broadcast' in copyright jurisprudence, P2PTV is likely to establish the initial liability of online service providers for secondary liability by the measure of current copyright law, where the actual infringing acts are carried out by end-users, in regard to the scrutiny in the matter of a P2P file-sharing software Soribada in Korea continuing for seven years. However, P2PTV is not a platform primarily designed to sharing copyrighted works. Thus, it shall not be as underestimated as it was in other MP3 file-sharing cases. Should we precisely discern the inherency of P2PTV, thus give due consideration for the collateral damage, which could be utilised as a leverage tool for accelerating the cultural development and promoting democracy by enabling the greatest freedom of speech ever seen. Thus, far-reaching capabilities via the borderless Internet connection, just as shown by P2PTV, must be afforded in order to seek a resolution that maintains the prudent balance between producer and consumer of works in a manner of mutatis mutandis, both inside and outside copyright law.