지방화시대의 지역사회운동의 역할과 과제

윤준상,김동섭 公州大學校 産業開發硏究所 1999 産業開發硏究 Vol.7 No.-

After 1960's, the urbanization and industriaization have been nation=leading in Korea. Also, the policy process oriented only the public good as a result nuder the authoritarian government, ommiting democratic proccess without taking public opinion into consideration. As result of these, each community's specific circumstance was not reflected in regional development and brought forward various social problems such as income and development disparity etc. However, operation of local autonomy, gradual realization of democracy and enlargement of demand on bottom-up made a community movements quantitatively and qualitatively. Community movements have played a very essential role as the major means of protest in such problems of community people concerned. Especially, in the cases of underprivileged social strata and area, community movement is an important means in the formation of political opinion and policy making processes to the their local government. Community movement should be based on the community people's needs. Community movement organizations should be made programs solving people's needs is to be established in local government level. So, the desirable directions for the development of community movement in community level are as follows: ① the settlement of Local Agenda, ② the development of community common sense, ③ the activation and solidarity of community movement organizations, ④ the development of community leadership, ⑤ the activation of local press and regional informatization, ⑥ the support of local government to the community movement organizations.

스마트 능동 레이어 센서 개발 (Ⅰ) : 이론 및 개념 연구 Theory and Concept Study

윤동진,이영섭,권재화,이상일 한국비파괴검사학회 2004 한국비파괴검사학회지 Vol.24 No.5

본 논문은 두 편으로 구성된 스마트 능동 레이어(smart active layer, SAL) 센서 개발에 관한 첫 번째 논문으로, 구조 내에 발생하는 균열 및 손상에 의한 탄성과 검출을 위한 SAL 센서의 이론 및 개념을 연구하였다. 본 SAL 센서의 개발을 위해, 첫째, 탄성파의 기본 이론을 고찰하였고, 둘째, 이론적 토대 위에 단일 압전 disc의 유한요소해석법(finite element analysis, FEA)을 이용하여 탄성파 검출 센서로서의 가능성을 검증하였고, 셋째, 몇 종류의 압전 disc 센서와 상용 음향방출(acoustic emission, AE) 센서를 연필심 파괴시험을 통해 상호 성능을 비교하여 실험적으로 그 가능성을 확인하였다. 또한 수개의 센서를 일정한 거리로 분포시켜서 구조물 결함의 효과적 검출 및 위치 표정이 가능한 스마트능동레이어 센서의 개념연구를 수행하였다. This paper is the first part of the study on the development of a smart active layer (SAL) sensor, which consists of two parts. In this first part, the theory and concept of the SAL sensor is investigated, which is designed for the detection of elastic waves caused by internal cracks and damages in structures. For the development SAL sensor, (ⅰ) the basic theory of elastic waves was studied, (ⅱ) the feasible study of the SAL as an elastic waves detection sensor using the finite element analysis (FEA) with respect to a piczoceramic disc was performed. (ⅲ) the comparison of performances between some piczoceramic sensors and a commercial acoustic emission (AE) sensor was accomplished to ensure the applicability by the experimental means, such as a pencil lead break test. Also, the conceptional study for the SAL sensor, which can be utilized for the effective detection and locating of defects by the arrangement of regularly distributed sensors, was discussed.

두개외 경동맥 협착증에 대한 스텐트 삽입술의 추적 결과

윤영섭,홍범기,최동훈,김선호,김동익,김승민,장양수,심원흠 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.11

지하매설 상수도 배관의 누수지점 탐지 알고리듬 연구

이영섭,윤동진 한국비파괴검사학회 2004 학술대회 논문집 Vol.- No.-

Leak noise is a good source to identify the exact location of a leak point of underground water pipelines, Water leak generates broadband noise from a leak location and can be propagated to both directions of water pipes. However, the necessity of long-range detection of this leak location makes to identify low-frequency acoustic waves rather than high frequency ones. Acoustic wave propagation coupled with surrounding boundaries including cast iron pipes is theoretically analyzed and the wave velocity was confirmed with experiment. The leak locations were identified both by the acoustic emission (AE) method and the cross-correlation method. In a short-range distance, both the AE method and cross-correlation method are effective to detect leak position. However, the detection for a long-range distance required a lower frequency range accelerometers only because higher frequency waves were attenuated very quickly with the increase of propagation paths. Two algorithms for the cross-correlation function were suggested, and a long-range detection has been achieved at real underground water pipelines longer than 300m.

지하매설 상수도배관의 누수지점 탐지를 위한 탄성파 검출연구

이영섭,윤동진,정중채,이승석 한국비파괴검사학회 2003 학술대회 논문집 Vol.- No.1

Leaks in underground pipelines can cause social, environmental and economical problems. One of a good contermeasures of leaks is to find and repair of leak points of pipes. Leak noise is a good source to identify thc location of leak points of pipelines. Although there have been several methods to detect thc leak location with leak noise, such as listening rods, hydrophones or ground microphones, they were not so efficient tools. In this paper, two accelermeters are used to detect leak locations which could provide an easier and effcient method. The filtering, signal processing and algorithm is described for the detection of leak location. A 120m-long pipeline system for experiment is installed and the results with the system show that the algorithm with the two accelerometers gives very accurate pinpointing of leaks. Theoretical analysis of sound wave propagation speed in underground pipes is also described.

GH_3 세포(rat somatomammotropic tumor cell)에서 TRH가 Phospholipase D 활성에 미치는 효과

김동선,김태화,이창범,안유헌,윤미섭,한중수 대한내분비학회 2002 Endocrinology and metabolism Vol.17 No.4

연구배경: GH_3 세포는 TRH에 반응하여 세포막의 수용체와 G 단백, PI-PLC, PKC를 활성시켜 성장호르몬 및 프로락틴을 분비한다고 알려져 있다. PLD는 phosphatidylcholine을 phosphatidic acid(PA)와 choline으로 가수분해하는 효소로서 세포의 증식과 호르몬 분비에 관여한다. 본 연구는 GH_3 세포에서 아직 알려지지 않은 TRH의 PLD 활성에 대한 영향을 규명하고자 하였다. 방법: GH_3 세포를 1.5×10^6씩 분주하고 [^3H] myristate로 표지한 다음에 0.3% 알코올로 전 처치하였다. TRH 등의 시험제를 처치한 후에 메탄올로 반응을 종결하고 세포에서 총 지질을 추출하였다. PLD 활성은 박층크로마토그래피를 이용하여 총 [^3H] phospholipid에서 [^3H] phosphatidylethanol의 비율로 구하였다. 결과: TRH (1μM)의 처치 시에 PLC 활성은 44배 증가하였다. PLD 활성은 TRH (1μM), mastoparan (5μM), PMA(500nM)를 30분간 처치 시에 각각 1.9, 1.5, 2.2배 증가하였다. TRH(1μM)의 시간에 따른 PLD 활성 변동은 15, 30, 60, 120, 240분에 각각 142%, 170%, 172%, 160%, 115%의 증가를 보였다. 결론: GH_3 세포에서 TRH의 호르몬 분비와 세포증식의 신호전달 기전으로서는 PLC 활성뿐 아니라 PLD의 활성도 관여함을 시사한다. Backgroud: GH_3 cells are a well characterized and widely used model used for the in vitro study of growth hormone (GH) secretion. Thyrotropin releasing hormone (TRH) binds to receptors belonging to the family of G protein-coupled receptors, and secrets both GH & prolactin. Phospholipase D (PLD) is and enzyme that hydrolyses phosphatidylcholine to yield phosphatidic acid and choline, and plays important roles in cellular proliferation and hormonal secretion. To elucidate the pathway of the action of TRH in GH_3 cells, we investigated the activities of PLC and PLD in GH_3 cells treated with TRH or phorbor 12-myristate 13-acetate (PMA). Methos : GH_3 cells were labeled with [^3H] myristate, followed by incubation of with 0.3% ethanol, prior to before the addition of the agonists. The total lipids were extracted from the harvested cells following treatment with the agonists. The PLD activity was assessed by measuring [^3H] phosphatidylethanol from the [^3H] phospholipid using thin layer chromatography. Results : TRH (1μM) stimulated the PLD activity by 44-fold over that of the control values. TRH (1μM), mastoparan (5μM), and PMA (500μM) for 30 minutes increased PLD activity by 1.9, 1.5 and 2.2 fold, respectively, in comparison to the controls, The PLD activities after 15, 30, 60, 120 and 240 min treatments of TRH (1μM) were 142%, 170%, 172%, 160% and 115%, respectively. Conclusion : These results suggest that TRH stimulates not only PLC activity, but also the PLD activity in GH_3 cells (J Kor Soc Endocrinol 17:465∼472, 2002).

農村人口移動과 農業構造變化에 관한 硏究 : A Case of Chon Buk Province 전북지역 6개군의 사례

李東鎬,윤근섭,張在右 韓國農業政策學會 1990 농업경영정책연구 Vol.17 No.1

음향방출 및 가속도 신호를 이용한 지하매설 상수도배관의 누수지점 탐지연구

이영섭,윤동진,정중채 한국비파괴검사학회 2003 한국비파괴검사학회지 Vol.23 No.3

지하매설 상수도 배관의 누수는 사회적, 환경적 그리고 경제적 문제를 야기시킨다. 이러한 누수에 대한 적절한 대응책의 하나로서 배관의 누수지점에 대한 탐지 및 수리가 해당될 것이다. 누수음은 배관의 누수지점의 식별에 좋은 탐지원이다. 비록 청음봉, 층음기 또는 지상마이크로폰과 같은 누수음으로 누수지점을 탐지하는 몇가지의 방법이 있어 왔지만, 그들은 그렇게 효율적인 도구들은 아니었다. 본 논문에서는, 좀 더 쉽고 효율적인 방법을 제공할수도 있는 음향방출센서와 가속도계를 사용한 누수위치탐지를 다룬다. 누수지점 탐지를 위해 센서로 부터의 입력신호에 대한 필터링, 신호처리 및 알고리듬을 기술하였다. 120 미터 길이의 배관이 실험을 위해 설치가 되었고, 실험결과들은 음향방출센서와 가속도계가 누수지점의 정밀탐지에 이용될 수 있음을 보여 주었다. 누수지점의 탐지에 극히 중요한 지하매설배관 속의 유체의 음파 전파속도에 관한 이론적 해석 또한 기술되었다. Leaks in underground pipelines can cause social, environmental and economical problems. One of relevant countermeasures against leaks is to find and repair of leak points of the pipes. Leak noise is a good source to identify the location of leak points of the pipelines. Although there have been several methods to detect the leak location with leak noise, such as listening rods, hydrophones or ground microphones, they have not been so efficient tools. In this paper, acoustic emission(AE) sensors and accelermeters are used to detect leak locations which could provide an easier and more efficient method. Filtering, signal processing and algorithm of raw input data from sensors for the detection of leak location are described. A 120 m-long pipeline system for experiment is installed and the results with the system show that the algorithm with the AE sensors and accelerometers offers accurate pinpointing of leaks. Theoretical analysis of sound wave propagation speed of water in underground pipes, which is critically important in leak locating, is also described.

스마트 능동 레이어 센서 개발 (Ⅱ) : 제작 및 적용 연구 Manufacturing and Application

이영섭,이상일,권재화,윤동진 한국비파괴검사학회 2004 한국비파괴검사학회지 Vol.24 No.5

본 논문은 두 편으로 구성된 스마트능동레이어(smart active layer, SAL) 센서 개발에 관한 두 번째 것이다. 이미 첫번째 논문에서 언급되었지만, 구조물 건전성 감시 (structural health monitoring, SHM)는 구조물 안전 감시의 비용과 편리성을 개선하기 위한 방법으로서, 산업현장에서 응용이 점차 증가하는 새로운 기술이며, 최근 실제 응용을 하기 위한 스마트 센서의 개발 및 연구가 매우 활발하다. 분 논문에서는 첫 번째 논문에 기술된 SAL 센서의 이론 및 개념 연구에 이어서 실제 제작 및 적용연구에 관해 기술한다. 본 연구에서는 탄성파 감지를 위한 스마트 안전 센서 SAL을 개발하였는데, 압전 소자, 전자기파 차폐층 (EMI shielding layer) 및 보호 층(protection layer)으로 구성되었다. 보호층에 일정 간격으로 분포된 압전 센서가 부착되고, 이들을 전기적으로 연결하는 회로층이 위치하고 있다. 모두 4종류의 SAL 센서가 설계, 제작 및 시험되었으며 이에 대해 상세히 기술하고 있다. 본 연구를 통해 SAL 센서는 SHM의 수행과 탄성파에 의한 손상 위치를 표정하는데 적용 가능할 것으로 예상된다. This paper is the second part of the study on the development of a smart active layer (SAL) sensor, which consists of two parts. As mentioned in the first paper, structural health monitoring (SHM) is a new technology that is being increasingly applied at the industrial field as a potential approach to improve cost and convenience of structural inspection. Recently, the development of smart sensor is very active for real application. This study has focused on preparation and application study of SAL sensor which is described with regard to the theory and concept of the SAL sensor in the first paper. In order to detect elastic wave, smart piezoelectric sensor, SAL, is fabricated by using a piezoelectric element, shielding layer and protection layer. This protection layer plays an important role in a patched network of distributed piezoelectric sensor and shielding treatment. Four types of SAL sensor are designed/prepared/tested, and these details will be discussed in the paper. In this study, SAL sensor can be feasibly applied to perform structural health monitoring and to detect damage sources which result in elastic waves.

Glutaraldehyde로 처리된 이종 및 자가 미세혈관 이식에 대한 실험적 연구

육홍미,윤진호,우동훈,김한중,김대섭 대한성형외과학회 1992 Archives of Plastic Surgery Vol.19 No.3

During microvascular procedures there frequently arises a need for a vascular graft. In this study the efficacy of preserving microvascular heterografts with glutaraldehyde tanning was investigated. These were compared with nonprepared autografts. Autogenous non-prepared rat femoral arterial grafts and glutaraldehyde-tanned rabbit femoral arterial grafts were interposed in fat femoral arteries. Ninty-one per cent and 74per cent patency rates were achieved respectively at 4weeks. This study has shown that glutaraldehyde tanning reduces the antigenicity of rabbit femoral arteries used as heterografts in the rat. This reduction in antigenicity prevented necrosis of the rabbit femoral the tendency to thrombosis, but as unacceptable occlusion rate (26% occluded) persisted. We assumed that thrombosis occurred because of incomplete reduction of the antigenicity of the heterografts. The exact mechanism resulting in occlusion of glutaraldegyde-tanned grafts is not known. Further work is therefore required to establish a tanning technique which can reduce antigenicity without leading to occlusion and without and without rendering the graft the difficult to use.