블렌딩을 이용한 폴리우레탄 그라프트 다중벽 탄소나노튜브/폴리우레탄 복합체의 전기 전도성 및 분산 특성

윤성진 ( Sung Jin Yun ),임현구 ( Hyun Gu Im ),김주헌 ( Joo Heon Kim ) 한국공업화학회 2010 공업화학 Vol.21 No.5

다중벽 탄소 나노튜브(Carbon nanotube, MWNTs)의 우수한 전기적 기계적 특성과 폴리우레탄의 우수한 기계적 물성을 이용하여 우수한 전기 전도성 복합체를 제조하기 위하여 말단기가 polyurethane로 기능화 된 탄소 나노튜브(PU-g-MWNTs)를 제조하였다. 말단기에 형성된 폴리우레탄과 고분자 메트릭스 간의 상용성으로 인한 계면 접합력으로 인해 기능화된 CNT 복합체 기능화 되지 않은 CNT에 비해 우수한 분산성을 나타내었다. PU-g-MWNT/PU 복합체의 전기전도성을 PU-g-MWNT의 농도에 따라 측정하였으며 percolation threshold 이론에 의해 해석하였다. 그 결과 PU-g-MWNT/PU 복합체의 전기전도성은 임계농도 0.78 wt%과 임계지수 0.945를 가짐을 확인하였다. The PU-g-MWNTs/PU film was synthesized by simple blending method to fabricate composites which have excellent mechanical and electrical properties. PU-g-MWNTs based composite revealed much enhanced dispersity than pristine MWNTs composite because of interfacial interaction related with interfacial compatibility between polymer matrix and PU on the MWNTs surface. The electro-conductivity of composite was measured as a function of PU-g-MWNTs concentration. The results were correlated with percolation threshold theory. As a result, the critical concentration and exponent of electro-conductivity behavior was equal to 0.78 wt% and 0.945.

초음파가 잉어 Cyprinus carpio의 성장 및 단기적 행동에 미치는 영향

윤성진 ( Sung Jin Yoon ),염동혁 ( Dong Hyuk Yeom ),김우근 ( Woo Keun Kim ),윤홍길 ( Hong Gil Yun ),이성규 ( Sung Kyu Lee ) 한국하천호수학회 2007 생태와 환경 Vol.40 No.2

청원경찰법 제11조의 위헌성

윤성진(YUN, Sung Jin),김경제(KIM, Kyong Je) 유럽헌법학회 2015 유럽헌법연구 Vol.18 No.-

공무원이 아닌 근로자의 신분을 가지고 있음에도 불구하고 업무가 공공성을 띄고 있다는 등의 이유로 관련 법률에 의해 근로3권 행사를 제한받고 있는 이들을 발견할 수 있다. 그런데 이들 대다수가 근로3권중 에서 공익을 위한 최소한의 필요조치로서 단체행동권만을 제한받을 뿐, 직접행동을 수반하지 않는 단결권과 단체교섭권은 정상적으로 행사할 수 있다. 그러나 청원경찰은 청원경찰법 제11조에 의해 이들의 업무상 공공성 등을 이유로 근로3권을 전부 금지 받고 있다. 이 때문에 청원경찰이 마찬가지로 공공적 업무를 수행하는 다른 근로자들에 비해 상대적으로 근로3권을 과도하게 제한을 받고 있는 것이 아닌지 의문이 든다. 앞서 헌법재판소는 2008년에 해당 조항의 위헌성을 두고서 심사를 한 적 있다. 그러나 당시 다수의 재판관이 위헌이라는 견해를 피력했음에도 불구하고 위헌결정이 내려지기 위한 정족수를 충족하지 못해 판결이 미뤄지고 말았다. 헌법적 의미에서 보면 입법자는 입법을 통해 개인의 기본권을 제한하더라도 원칙적으로 과잉금지의 원칙이나 평등의 원칙과 같은 기본권 제한의 한계를 정하는 원리를 일탈할 수 없고, 타법과 체계상 균형을 이루는 선에서 기본권을 제한하는 입법이 가능하다. 그리고 기본권에 법 이론상 절대적 부분이 존재 한다면 기본권 중에서 제한이 허용되는 범위 밖에 본질적인 핵심영역을 제한해서는 안된다. 이 모든 사실을 감안한다면, 청원경찰의 근로3권을 전부 금지하는 청원경찰법 제11조는 기본권제한입법의 한계를 일탈한 것으로서 헌법에 위반한다. We can easily find people who are laborers not public servants and yet cannot exercise labor's three primary rights because their work is related to public interest. All those people mentioned above have one thing in common. They cannot exercise the right of collective action, among labor's three primary rights, due to the consideration of public interest. However, unlike others, police assigned for special guard, under article 11 of POLICE ASSIGNED FOR SPECIAL GUARD ACT, are banned from exercising all of the labor’s three primary rights, because their work is related to public interest. Because of this restriction, it seems that police assigned for special guard are disproportionately discriminated from invoking labor’s three primary rights compared to other laborers whose works are also related to public interest. The Constitutional court once examined to provision whether it is unconstitutional. On the ruling, although many judges claimed that the provision is unconstitutional based on the fact that it is restricting labor’s three primary rights, they failed to meet the quorum. Although legislatures can restrict fundamental rights they cannot deviate from the principles such as Principle of the proportion and The rule of equality that limits the restriction of fundamental rights. Moreover, theoretically if there are absolute portion, when restricting fundamental rights, this portion cannot be disturbed. Considering all these, restriction on labor's three primary rights of the police assigned for special guard based on article 11 of POLICE ASSIGNED FOR SPECIAL GUARD ACT surpassed the limits of restricting fundamental rights and cannot be freed from the doubts whether the provision is unconstitutional.

6FDA를 포함한 불소계 폴리이미드와 PMMA가 그래프트된 카본나노튜브 나노복합필름의 전기 전도성 연구

윤성진(Sung Jin Yun),임현구(Hyun Gu Im),김주헌(Joo Heon Kim) 한국고분자학회 2010 폴리머 Vol.34 No.2

은퇴자도시 개발 활성화 방안에 관한 연구

윤석윤(Yun, Seok-Yun),윤성진(Yun, Sung-Jin) 한국주거환경학회 2020 주거환경(한국주거환경학회논문집) Vol.18 No.3

본 연구는 빠른 속도로 진행되고 있는 초고령화 시대에 대비하여 은퇴자의 노후 주거 및 복지 문제 해결을 위한 은퇴자도시의 계획적 개발이 필요하다는 인식에서 시작되었다. 그러나 저출산과 고령화에 대한 정부의 정책은 극히 소극적이고 민간 부분에서도 나서지 않고 있다. 이에 비하여 산업화와 도시화를 먼저 경험한 미국과 영국 등 선진국에서는 물리적인 도시계획과 사회적인 공동체를 결합하여 고령화에 대응하는 노인과 은퇴자의 집단주거단지와 대규모 은퇴자마을을 체계적으로 건설 및 운영하고 있다. 본 연구에서는 개인별로 추구하는 농촌생활에 대한 제도적 문제점을 분석하고 해외 은퇴자 마을 사례와 국내의 은퇴자 공동체 마을 및 전원도시 개발에 대한 시험적 사례를 대안으로 소개하였다. This study began with the recognition that development of retirement cities is necessary to solve the retirement housing and welfare problems of retirees for the rapidly aging era. However, the government s policy on low birthrates and aging has been extremely passive and the private sector has not been participated. In contrast, advanced countries such as the U.S. and the U.K., which experienced industrialization and urbanization first, have combined physical urban planning with social communities to systematically build and operate collective residential complexes for the elderly and retirees and large retirement villages to cope with the aging population. This study analyzed the institutional problems of rural life pursued by individuals and introduced examples of overseas retiree villages and test cases of domestic retiree community village and rural town development as alternatives.

충남도청 이전이 대전광역시에 미치는 영향에 관한 연구

윤석윤(Yun, Seok-Yun),윤성진(Yun, Sung-Jin) 한국주거환경학회 2014 주거환경(한국주거환경학회논문집) Vol.12 No.2

In recent days, the public institution have been actively relocated from the central government to local government. In case of the relocation of provincial government, some provinces have been already relocated such as Gyeongnam, Jeonnam and Chungnam, other province like Gyeongbuk has a plan for relocation. The relocation of the provincial government is supported by the logic that the public office should be placed under the jurisdiction. On the other hand, it is criticized for weakening centrality of metropolitan city and destruction of nature by developing underdeveloped land. Based on the Multi-regional input-output model and I-O data obtained by RAS method, this study examines the multiplier effects of the relocation in terms of production, value added and employment on Daejeon. According to the analysis, the relocation is expected to reduce the production by 863.1 bllion won, value added by 497.5 bllion won and employment by 6,856 persons in Daejeon region. Also, discussion for utilization of land used for Chungnam-Do provincial government office is currently underway. In this context, this study shows forward and backward linkage effects of Daejeon based on I-O data. As a result, “the first metal goods industry” records the highest backward linkage effects of Daejeon region, followed by “others”, “transport equipment”, “metal ware”, “electron and electronic instrument”. This study can help to find a alternative for solving problem due to relocation.

수영 운동이 외상성 뇌손상 유발 흰쥐에서의 c-Fos 발현에 미치는 영향

김보균(Kim Bo-Kyun),윤성진(Yoon Sung-Jin),김승희(Kim Seung-Hee),서진희(Seo Jin-Hee),김대영(Kim Dae-Young),성윤희(Sung Yun-Hee),김창주(Kim Chang-Ju),신말순(Shin Mal-Soon),윤진환(Yun Jin-Hwan),이희혁(Lee Hee-Hyuk) 한국체육과학회 2009 한국체육과학회지 Vol.18 No.1

Traumatic brain injury is known to cause severe neurological damage and has a high mortality rate. c-Fos expression is recognized as a marker of increased neuronal activity, however, excessive c-Fos expression represents apoptotic neuronal cell death. In the present study, the effect of swimming exercise on traumatic brain injury-induced c-Fos expression in rats was investigated by c-Fos immunohistochemistry. The rats were divided into 3 groups: the sham-operation group, the traumatic brain injury-induction group, and the traumatic brain injury-induction and swimming exercise group. The animals in the exercise group were forced to swim for 30 min once a day during 14 consecutive days. The present results showed that traumatic brain injury enhanced the number of c-Fos-positive cells in the paraventricular nucleus (PVN) and ventrolateral periaqueductal gray (vlPAG) regions and that swimming exercise significantly suppressed the traumatic brain injury-induced c-Fos expression. In the traumatic brain injury rats, swimming exercise exerted inhibitory effect on the c-Fos exepression in the PVN and vlPAG regions. Based on the present results, it can be suggested that swimming exercise has a neuroprotective against traumatic brain injury by suppressing c-Fos expression.

저서성 해산 요각류 harpacticoid Tigriopus japonicus 유생을 이용한 해양생태독성평가

윤성진(Sung Jin Yoon),박경수(Gyung Soo Park),오정환(Jeong Hwan Oh),박승윤(Soung Yun Park) 한국해양환경·에너지학회 2006 한국해양환경·에너지학회지 Vol.9 No.3

경주 동해안권의 해양과학자원과 문화자원 융합을 통한 문무대왕 재조명 및 경주지역 해양교육관광 활성화 방안

김윤배(Yun-Bae KIM),윤성진(Sung-Jin YOON) 한국수산해양교육학회 2017 水産海洋敎育硏究 Vol.29 No.4

The eastern coast of Gyeongju has a variety of resource of marine history such as the submerged tomb of King Munmu, Gamunsa Temple, Songdaemal Lighthouse and columnar joints at the beach area. In addition, Gyeongju eastern coast region is remarkable coastal upwelling area in Korea, where subsurface cold water with much nutrient is induced to surface layer due to its bottom topography and wind. This paper explore the multidisciplinary characteristics through the fusion of marine science and marine culture resources in the eastern coast of Gyeongju, and its applications to marin education tourism in Gyeongju. Firstly, it is necessary to focus the value of the Gyeongju eastern coast area as a center for marine territory education of East Sea using the historical resources. Secondly, it is also required to find storytelling that combines with the scientific results such as upwelling, advection of ocean currents toward the Dokdo and variation of sea level. Finally, in order to revitalize marine education tourism of Gyeongju it is necessary to actively connect with neighboring marine resources and Silla culture area.

표면탄성파를 이용한 자이로스코프 개발

오해관,윤성진,이기근,왕웬,양상식,Oh, Hae-Kwan,Yun, Sung-Jin,Lee, Kee-Keun,Wang, Wen,Yang, Sang-Sik 한국군사과학기술학회 2009 한국군사과학기술학회지 Vol.12 No.1

This paper presents a surface acoustic wave(SAW) micro-electro-mechanical-systems(MEMS) interdigital transducer (IDT) gyroscope with 80MHz central frequency on a $128^{\circ}\;YX\;LiNbO_3$, which is consisted of a two-port SAW resonator, metallic dots and dual delay lines for the sensor and reference oscillators. Reason for using two delay line oscillators is to extract the gyroscope effect by comparing the resonant frequencies between two oscillators and to compensate the temperature effect. Based on the coupling of modes(COM) simulation, an 80MHz two ports SAW resonator and dual delay line were fabricated and characterized by the network analyzer. Obtained sensitivity was $109Hz/deg{\cdot}s^{-1}$ in the angular rate range of $0{\sim}1000deg/s$. Good Linearity and superior directivity were observed.