GOOSE 메시지를 이용한 거리계전 IED의 성능 향상

高哲鎭,姜相熙 明知大學校 産業技術硏究所 2006 産業技術硏究所論文集 Vol.25 No.-

IEC 61850 is the worldwide protocol for the substation automation system. IEG 61850 transports the information which consists of a different format what the information is. If the Information needs real time transmission, GOOSE will be used. And, if the remote current information can transport from a local differential IED to a local distance IED using GOOSE, the distance IED can eliminate the reactance effect. This method improve reliability of the transmission line protection.

롤포밍 공정에서의 성형방법에 따른 직진성 예측

정상화,이상희,김재상,박진완,임성빈 朝鮮大學校 機械技術硏究所 2007 機械技術硏究 Vol.10 No.2

Roll forming process is one of the most widely used processes in the world for forming metals. It can manufacture goods of the uniform cross section throughout the continuous processing. However, analysis of process is very difficult because of the inherent complexity of the process. For this reason, the computer analysis methods such as the FEM(Finite Element Method) and the FDM(Finite Difference Method) are frequently used in roll forming design. In this paper, the under rail composed of upper member, center member and lower member is modeled. Also the flower pattern of the upper member is designed and the roll forming process is simulated. The upper member is designed using constant arc length forming method and constant radius forming method for excellent design. The cold rolled carbon steel sheet(SCP-l) is used in this simulation, and a flow stress equation is set up through the tensile test. Each types are simulated and compared with the longitudinal strain using SHAPE-RF software. In addition. the numerical magnitude of camber and bow is predicted from the results of the simulation.

약골 골절후 발생된 골수염의 처치의 치험례

이철희,서정식,고말식,손동석,김성국 大韓顎顔面成形再建外科學會 1995 Maxillofacial Plastic Reconstructive Surgery Vol.17 No.3

With the use of antibiotics and improved dental care, osteomyelitis of the jaw is less common these days. But sometimes the management of osteomyelitis is more difficult because of appearance of resistant organisms to antibiotics. Treatment of the steomyelitis are incision and drainage, closed catheter irrigations, sequestrectomy, saucerization, hyperbaric ocygen therapy, and resection with or without bone graft. We experienced advanced osteomyelitis due to delayed treatment of left mandibular angle fracture. He have medical history of pschysoprenia. We decided to treat the patient with open reduction and closed cather irrigation. We achived reconsolidation of mandibular fracture accompanied by osteomyelitis by complete removal of inflammatory tissues, rigid fixation with miniplate and closed catheter irrigation.

구성주의에 기초한 수학교육 연구

이옥희,이상건 全北大學校 敎育大學院 2000 敎育論叢 Vol.20 No.-

The constructivism is to set the environment for teaching and learning as finding out the inside and outside knowledge of students by themselves through constructing activities for problem solving. In this study, we are going to find out how to apply the constructivism with "The teaching of parabola" by paper work and "The exponent law of Lampert" which is one of the social interaction in the class.

효율적인 군 전직지원체제 정립 방안

정철영,고재관,황원채,윤희철,박가열,김재호,이성식,김동승,표성일,이건남,양안나,최수정,김은석 한국직업능력개발원 2008 직업능력개발연구 Vol.11 No.1

이 연구의 목적은 제대군인에 대한 효율적인 전직지원을 위해서 현행 전직지원 프로세스에 대한 개선 안과 이에 따른 국방부, 국가보훈처 등 제대군인 전직지원관련 기관 간의 역할분담 및 연계방안에 대해서 제안하는 것이다. 연구는 크게 세 가지 과정을 거쳤다. 첫째, 국내 군 전직지원 실태를 분석하여 문제점과 시사점을 도출하였다. 둘째, 이러한 문제점과 시사점, 군 전직지원 선행연구를 종합하여 효율적인 군 전직지원 프로세스 안을 제시하였다. 셋째, 구축한 군 전직지원 프로세스 안에 따라 주요 군 전직지원 관련 기관인 국방부, 국가보훈처의 역할 분담 안을 제안하였다. This study aims to suggest an improvement plan for the support process of effective occupation change for discharged soldiers and then role assignments among related institutions for supporting discharged soldiers such as Ministry of Defense, Ministry of Patriots and Veterans Affairs, Ministry of Labor and the cooperation plan among the institutions. The study was made in three steps. First, after analyzing currents support facts and status for discharged soldiers, it induced its problems and implications. Second, integrating the findings of previous studies related to support plan on occupation changes for the discharged soldiers, Problems and implications mentioned above, it constructed effective occupation change process for discharged soldiers. Then, according to the established process, it suggested role assignments such as Ministry of Defense, Ministry of Patriots and Veterans Affairs, Ministry of Labor.

심한 골병변으로 발현된 기능성 낭종성 부갑상선 선종

전숙,김영희,박지영,고관표,박철영,김덕윤,우정택,김성운,김진우,김영설,고석환 대한내분비학회 2003 Endocrinology and metabolism Vol.18 No.2

낭종성 부갑상선 선종과 심한 골병변을 동반한 부갑상선 기능항진증은 매우 드문 질환으로서, 저자들은 양측 고관절의 통증을 초기 주소로 내원한 환자에서 고칼슘혈증과 부갑상선 호르몬 증가, 골병변의 방사선적 소견을 통해 부갑상선 기능항진증을 진단하고, 경부 초음파와 컴퓨터 단층 촬영, 부갑상선 스캔검사 및 수술중 부갑상선 낭종액 검사 등을 통해 기능성 부갑상선 낭종의 한 종류인 낭종성 부갑상선 선종을 진단하고 수술적 제거를 통하여 정상화된 1예를 경험하였다. A cystic parathyroid adenoma is rare. A case of primary hyperparathyroidism, with the cystic formation of a parathyroid adenoma and a severe bony lesion, is reported. A 52-year-old male was admitted due to pain in both hips and for evaluation of hypercalcemia. The plasma level of the intact parathyroid hormone (iPTH) was elevated to 1424 pg/mL. Ultrasonography and the computed tomography revealed a parathyroid cyst on the left thyroid lower pole. Parathyroid scintigraphy detected a parathyroid adenoma. A radiograph showed a subperiosteal bone resorption on the phalanges, and a brown tumor (osteitis fibrosa cystica) on the femur shaft was noted. A surgical excision of the parathyroid adenoma was performed. The PTH level in the cystic fluid was increased. A histological examination confirmed a cystic parathyroid adenoma. The PTH level was normalized after the operation (J Kor SOC Endocrinol 18:214-220, 2003).

심해 상어 간유에 의한 지방성 폐렴 2례

권경배,권삼,고희신,최성민,김두권,신형종,강승완,김우택 東國大學校醫學硏究所 1994 東國醫學 Vol.2 No.-

외인성 지방성 폐렴은 1925년 Laughlen에 의하여 처음으로 기술되었으며, 우리나라에서도 소아에서 다수가 보고되었다. 이 지방성 폐렴은 지방성 물질을 흡인 또는 흡입함으로서 쉽게 발생하며 임상적으로 질식, 빈호흡, 호흡곤란, 세균감염의 합병 및 성장 장애 등을 특징으로 한다. 방사선학적 소견으로는 병변의 부위는 환자의 자세와 투약 형태에 따라 드물며 광유 흡인에 의한 경우 종속 위치에서 기름을 비점적 흡인한 경우에 좀 더 광범위하게 분포를 하게되며 가장 잘 침범되는 부위는 우측 폐 하엽의 내측 분절과 심폐 분절 등이고 중력 의존적(gravity-dependent) 침윤에서부터 무기폐에 이르기까지 다양하게 나타난다. 예후는 침범된 병변의 부위, 환자의 전신상태 및 감염의 합병에 따라 다양하며 지방성 폐렴에 대한 특별한 치료가 없기 때문에 예방이 최선의 방법이다. 저자들은 심해 상어 간유 복용후 발생한 지방성 폐렴 2례를 경험하였다. 증례 1은 5개월된 남아로서 입원 당시 흉벽 함몰, 빈호흡을 호소하였고, 흉부 X선 촬영상 양폐야의 침윤을 나타내었고, 약 10개월 후에 실시한 흉부 X선 추적검사에서 병변은 여전히 남아있었다. 증례 2는 15개월된 여아로서 입원당시 잦은 상기도 감염, 발열 및 위식도 역류에 의한 성장 장애를 나타내었고, 흉부 X선 촬영상 양폐야의 침윤을 보였고, 약 9개월 후에 실시한 흉부 X선 추적검사에서 병변은 많이 호전되었다. 저자들은 심해 상어 간유에 의한 지방성 폐렴 2례를 경험하였기에 문헌고찰과 함께 보고하는 바이다. Exogenous lipoid pneumonia was first described by Laughlen in 1925 and a few cases of the pneumonia were reported during childhood in our country. It can be easily developed by the aspiration of lipoid substance through the airway. It is characterized by choke, tachypnea, chest retraction, dyspnea, superimposed bacterial infection and growth retardation. Roentgenographically the appearance is very diversed from gravity-dependent infiltration to atelectasis. The prognosis is also diversed according to the degree of involved lision, the general condition of the patients, and the superimposed infections. There's no specific treatment of lipoid peumonia. Therefore, prevention is the most important treatment. We experienced the two cases of exogenous lipoid pneumonia occurred shortly after having several capsules of the deepsea-shark-liveroil(Squalene). In the first case the 5-month-old male infant suffered from chest retraction and tachynea and the patchy and streaky infiltration of the both lung fields on the chest X-ray was revealed at the admission time. About 10 months later the lesion was remained reentgenographically. In the second case the 15-month-old female patient suffered from frequent upper respiratory infections, mild to moderate fever, and failure to thrive probably due to gastroesphageal reflusx. The chest X-ray was similar to the first case, but the lesion is nearly clear about 9 months after the discharge. We report two cases of lipoid pneumonia with brief review of relevant literature.

Effects of Defects Generated in ALD TiO2 Films on Electrical Properties and Interfacial Reaction in TiO2/SiO2/Si System upon Annealing in Vacuum

( Sang Hee Won ),( Seung Hee Go ),( Won Hee Lee ),( Kyung Hoon Jeong ),( Hyun Suk Jung ),( Chong Mu Lee ),( Eun Gu Lee ),( Jae Gab Lee ) 대한금속재료학회 ( 구 대한금속학회 ) 2008 METALS AND MATERIALS International Vol.14 No.6

Thin TiO2 layers grown at 130℃ on SiO2-coated Si substrates by atomic layer deposition (ALD) using TTIP and H2O as precursors were annealed, and the effects of the annealing temperature on the resulting electrical properties of TiO2 and the interface properties between a Pt electrode and TiO2 were examined using transmission line model (TLM) structures. The as-deposited TiO2 thin film had an amorphous structure with OH groups and a high resistivity of 6 × 103 Ω-cm. Vacuum annealing at 700℃ transformed the amorphous film into an anatase structure and reduced its resistivity to 0.04 Ω-cm. In addition, the vacuum-annealing of the TiO2/SiO2 structure at 700℃ produced free silicon at the TiO2-SiO2 interface as a result of the reaction between the Ti interstitials and SiO2. The SiO2 formed on the TiO2 surface caused a Schottky contact, which was characterized by the TLM method. The use of the TLM method enabled the accurate measurement of the resistivity of the vacuum-annealed TiO2 films and the characterization of the Schottky contacts of the metal electrode to the TiO2.

실내 환경에서의 트랙터 자동 주차를 위한 카메라 센서 기반의 트레일러 Hitch Joint Angle 검출 알고리즘

장성빈(Sung Been Jang),신희석(Hee seok Shin),김현우(Hyun woo Kim),최윤중(Yoon jung Choi),김정하(Jung Ha Kim) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11

Recently, many studies on autonomous vehicles have been conducted, and research on autonomous driving technology has been actively conducted in various fields such as multi-purpose vehicles such as camping cars. In particular, camping cars and large cargo trucks are equipped with trailers on the skin after the vehicle, which are divided into towed trailers and tractors that tow them. The steering angle of the tractor takes precedence over the movement of the trailer because the movement of the tractor and the trailer in the direction of rotation is different when driving backward when parking. Therefore, in order to implement an automatic parking system, we aim to implement an automatic parking algorithm by detecting the angle of the Hitch joint between the tractor and the trailer based on the camera sensor and sending data to determine the steering angle of the tractor.

Calcium Polystyrene Sulfonate 복용으로 유발된 급성 대장 괴사의 1예

이성화 ( Sung Hoa Lee ),김성중 ( Sung Jung Kim ),김고운 ( Go Eun Kim ),이우진 ( Woo Jin Lee ),홍원기 ( Won Ki Hong ),백광호 ( Gwang Ho Baik ),최영희 ( Young Hee Choi ),김동준 ( Dong Joon Kim ) 대한소화기학회 2010 대한소화기학회지 Vol.55 No.4

A 63-year-old woman was admitted due to right upper quadrant abdominal pain. She was going through hemo-dialysis due to end stage renal disease and taking calcium polystyrene sulfonate orally and rectally due to hyperkalemia. Colonoscopy showed a circular ulcerative mass on the proximal ascending colon. Biopsy specimen from the mass showed inflammation and necrotic debris. It also revealed basophilic angulated crystals which were adherent to the ulcer bed and normal mucosa. These crystals were morphologically consistent with calcium polystyrene sulfonate. She was diagnosed with calcium polystyrene phosphate induced colonic necrosis and improved with conservative treatment. (Korean J Gastroenterol 2010;55:261-265)