http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
서동주(Seo, Dongju) 동북아시아문화학회 2020 동북아시아문화학회 국제학술대회 발표자료집 Vol.2020 No.10
Recently, discussions pointing to the “right wing of Japanese politics” have become popular. So what about people"s consciousness? It would not be enough to discuss the "right wing" of Japanese society with the case of a politician alone. This is because the Abe government that led the “right wing of Japanese politics” was also the result of the Japanese voters" choice. In fact, the results of public opinion polls show that over the past decade, Japanese people have increased their positive feelings toward “Japan”. A sociologist says that this affirmation of the present is rooted in the Japanese"s "realization of abundance" in the 1970s. According to him, he calls for a look at the “post-war” movement of contemporary Japan in a longer historical context. In the end, this discussion cannot be limited to the political changes resulting from the emergence of the second Abe regime (2012), and it must be analyzed in conjunction with the structural changes of the post-war system that began in the 1970s and continues to this day. It reminds us that it is a task.
A study on accumulated damage of steel wedges with dead-rise 10° due to slamming loads
Seo, Byoungcheon,Truong, Dac Dung,Cho, Sangrai,Kim, Dongju,Park, Sookeun,Shin, Hyunkyoung The Society of Naval Architects of Korea 2018 International Journal of Naval Architecture and Oc Vol.10 No.4
This paper presents the results of experimental investigation on the elastic-plastic response of steel unstiffened wedges with dead-rise $10^{\circ}$ subjected to repeated impulsive pressure loadings. Repeated drop tests were performed with both wedge thickness and drop height varied. The pressure and histories were recorded during the tests and the permanent deflections were measured after every drop. Using the recorded test result, the effects of flexibility of wedges and repetition have been investigated. From the pressure history obtained from the tests the characteristics of the impulses were identified. Numerical simulations of the tests were made using the measured pressure history and the permanent deflection predictions were compared with those of the experiments.
High-performance tires based on graphene coated with Zn-free coupling agents
Seo, Jin Gwan,Lee, Chung Kyeong,Lee, Dongju,Song, Sung Ho THE KOREAN SOCIETY OF INDUSTRIAL AND ENGINEERING 2018 JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY -S Vol.66 No.-
<P><B>Abstract</B></P> <P>Silica has recently attracted attention as reinforcing filler for tread formulations leading to lower rolling resistance and hysteretic losses with the development of “green tires” in the tire industry. Due to the poor compatibility of hydrophilic silica with a hydrophobic rubber, zinc-free coupling agents (ZFCs) are required to satisfy environmental concerns. In this work, we synthesized ZFCs and ZFCs-functionalized graphene (GZFCs), and fabricated GZFCs-embedded SBR with remarkable enhancement in mechanical, thermal, and electrical properties. The GZFCs-rubber composite showed enhanced dry and wet braking and rolling resistance due to enhanced dispersion and strong interfacial interaction of GZFCs in the silica/rubber matrix.</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
다이폴 상태와 루프 상태로 변환 가능한 종이접기 방식의 종이 안테나
이동주(Dongju Lee),서윤식(Yunsik Seo),임성준(Sungjoon Lim) 한국전자파학회 2016 한국전자파학회논문지 Vol.27 No.1
본 논문에서는 잉크젯 프린팅 기술을 이용하여 종이 필름 위에 전도성 잉크를 인쇄하여 방사 패턴 변환이 가능한 종이접기 형태의 안테나를 제안한다. 제안된 안테나는 접었을 때와 펼쳤을 때 각각 다이폴 안테나와 루프 안테나로 동작하며, 종이 필름을 접고 펼치는 방식에 따라 상호 변환될 수 있다. 제안된 안테나는 다이폴 상태와 루프 상태일 때 모두 동일하게 1.85 GHz에서 동작하도록 설계되었다. 종이 필름을 접었을 때 종이 필름의 코팅과 그 위에 인쇄된 전도성 잉크가 깨짐 현상을 해결하기 위해 액체금속(liquid metal)중 하나인 EGaIn(Eutectic Gallium Indium)을 사용하였다. 제안된 안테나의 성능은 시뮬레이션과 실제 측정 결과로 확인할 수 있으며, 다이폴 상태와 루프 상태일 때 안테나 이득은 각각 —4dBi, —5 dBi이다. 또한, 측정 결과, 다이폴 상태와 루프 상태일 때 서로의 Null 부분을 서로 상호 보완해 주는 것을 확인할 수 있다. A pattern-switchable origami antenna is designed with paper using inkjet-printing technology. The proposed antenna can be switched between loop and dipole antenna modes by folding and unfolding the paper, respectively. The proposed antenna is designed for the resonant frequencies of both modes to be 1.85 GHz. Eutectic gallium-indium liquid metal is introduced in order to avoid cracks in the conductive ink when the paper is folded. The performance of the proposed antenna is demonstrated through simulation and measurement results and antenna gain of dipole-mode and loop-mode are —4 dBi and —5 dBi, respectively. Also, the nulls of both dipole and loop modes compensate nulls from each mode.
무선센서네트워크 환경에서 기대전송비용을 이용한 효율적인 포워딩 기법
배동주 ( Dongju Bae ),서재완 ( Jaewan Seo ),추현승 ( Hyunseung Choo ) 한국정보처리학회 2009 한국정보처리학회 학술대회논문집 Vol.16 No.2
위치기반 라우팅 기법들은 소스에서 목적지노드로 데이터 패킷을 전송하기 위한 목적으로 널리 사용된다. 오리지널 그리디 포워딩 기법은 실제 무선링크의 신뢰성을 고려하지 않아 수많은 데이터 패킷재전송이 발생한다. 이러한 문제를 해결하기 위해 PRR × Distance 기법이 제안되었지만 실제 무선링크의 비대칭성을 고려하지 않아 여전히 많은 재전송이 발생한다. 제안기법은 포워딩할 데이터 패킷을 가진 현재 노드의 전송 반경 내에서 전송 가능한 1-hop과 2-hop 라우팅 경로를 찾는다. 이들 라우팅 경로들 중 기대전송비용이 최소가 되는 경로를 선택하여 데이터와 ACK 패킷을 전송한다. 시뮬레이션을 결과를 통해 제안기법이 기존 기법들보다 높은 신뢰성과 에너지 효율을 가짐을 보인다.
A study on accumulated damage of steel wedges with dead-rise 10 due to slamming loads
Byoungcheon Seo,Dac Dung Truong,Sang-Rai Cho,Dongju Kim,Sookeun Park,Hyun Kyoung Shin 대한조선학회 2018 International Journal of Naval Architecture and Oc Vol.10 No.4
This paper presents the results of experimental investigation on the elasticeplastic response of steel unstiffened wedges with dead-rise 10 subjected to repeated impulsive pressure loadings. Repeated drop tests were performed with both wedge thickness and drop height varied. The pressure and histories were recorded during the tests and the permanent deflections were measured after every drop. Using the recorded test result, the effects of flexibility of wedges and repetition have been investigated. From the pressure history obtained from the tests the characteristics of the impulses were identified. Numerical simulations of the tests were made using the measured pressure history and the permanent deflection predictions were compared with those of the experiments.
동북아해역인문학 관련 연구의 동향과 전망 : 부경대 HK+사업단 아젠다 연구와 관련하여
손동주(Son Dongju),서광덕(Seo Kwangdeok) 부경대학교 인문사회과학연구소 2021 인문사회과학연구 Vol.22 No.1
국내 인문학계에서는 지난 20년 동안 바다를 대상으로 새로운 인문학을 수립하기 위한 연구가 진행되었다. 이것은 교육부와 한국연구재단이 지원하는 인문한국 프로젝트에 선정된 여러 사업단에 의해 전개되었으며, 부경대학교 HK+사업단도 이 가운데 하나로서 연구를 진행하고 있다. 부경대학교 HK+사업단의 아젠다는 동북아해역에서 전개된 다양한 인적 · 물적 교류 및 이와 함께 발생한 다양한 문화의 수용과 변화를 조사하여 현재 동아시아 지역에 존재하는 갈등과 대립을 극복하기 위한 실질적인 대안을 마련하는 것을 목표로 한다. 근대 이후의 바다는 전쟁의 바다였다. 이것은 동북아지역에 상존하고 있는 갈등과 대립의 씨앗이 바다에서 시작되었다는 의미다. 이런 점에서 부경대 HK+사업단의 아젠다는 1980년대 이후 국내 지식계에 등장한 동아시아 담론이 제기한 문제의식과 상통한다. 따라서 부경대 HK+사업단이 추구하는 동북아해역인문학의 성립은 바로 지금까지 해양사를 비롯한 다양한 인문학 분야의 해역 연구가 현재적 문제를 푸는 대안적 가능성을 어느 정도 갖고 있는지를 탐색하고, 이를 바탕으로 새로운 인문학적 비전을 제시할 수 있는가에 달려있다고 할 수 있다. 여기에 초점을 맞추어 한국학계의 해역과 관련된 인문학 연구를 검토하고, 부경대 HK+사업단의 3년간 연구 결과를 분석하고 향후 연구 방향을 모색했다. Research in the humanities field related to the ocean (sea) in Korea has been active since the end of the 20th century. There may be various reasons for this, but above all, it was triggered by an interest in the sea as an object of increasing crisis consciousness in the humanities itself and the search for postmodernism. Research to cultivate new humanities thinking on the ocean (sea) has been conducted in the domestic humanities world for the past 20 years. This trend was conducted jointly by several project groups selected for the Humanities Korean Project supported by the Ministry of Education and the Korea Research Foundation, and the HK+ project group at Pukyong University is also conducting research in that rank. This article is to review the results of humanities research related to the ocean (sea), and to examine the research direction of the HK+ project group at Pukyong National University. The agenda of the HK+ project group at Pukyong National University is a practical approach to overcoming conflicts and confrontations that exist in the current East Asian region by investigating various human and material exchanges and the acceptance and transformation of different cultures that have occurred in the Northeast Asian sea region after the modern era. I want to pursue a plan. This somewhat overlaps with the consciousness of problems raised by East Asian discourses that have emerged in the domestic intellectual world since the 1980s. Therefore, whether or not the Northeast Asian marine humanities pursued by the Pukyong National University HK+ project group can ultimately be established depends on the degree of alternative possibility to solve the problems that marine research in various humanities fields including maritime history has tried to solve so far. . Focusing on this point, we reviewed the humanities research related to the sea area of Korean academia, analyzed the research results of the HK+ project group at Pukyong National University for three years, and explored future research directions.