• 제목/요약/키워드: KTCS

검색결과 10건 처리시간 0.018초

KTCS 기능개선을 위한 ERTMS/ETCS Baseline 3 상호호환성 분석 (Analysis of ERTMS/ETCS Baseline 3 for The KTCS Function Improvement)

  • 황경환;우형남;성동일;이기서
    • 한국정보전자통신기술학회논문지
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    • 제14권5호
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    • pp.375-384
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    • 2021
  • 유럽철도교통관리시스템(ERTMS, European Railway Traffic Management System) 개발은 1989년 유럽의 단일화된 상호호환성을 갖춘 철도노선 구축을 위해 유럽연합 정책의 일환으로 시작되었으며, 철도신호시스템은 유럽의 ERTMS/ETCS(European Train Control System)가 국제적으로 표준화가 되어 가고 있는 추세이다. 이에 대한 해결책으로 국내 열차제어 분야도 상호호환성을 고려한 열차제어시스템의 기술개발이 보다 더 필요한 시점이다. 유럽철도국(ERA, European Railway Agency)에서는 2020.12.31 이후 신규 ETCS 장착열차에 대해서 B3R2(Baseline 3 Release 2)를 제시하고 있으며 우리나라는 경부선, 호남선, 전라선, 경춘선에서 Baseline 2.2.0부터 2.3.0까지 설치되어 운영 중이다. 계속되는 Baseline의 upgrade에 따라 기술적인 검토사항과 경제적인 고려사항이 발생하고 있는 추세이다. 본 논문에서는 현재 배포된 최신의 유럽 표준 ERTMS/ETCS Baseline 3에 대한 주요기능 및 상호호환성을 분석하고, 향후 국내 KTCS(Korean Train Control System)의 Baseline 적용방안을 제시하고자 한다.

기술코디네이터를 활용한 산업체 애로기술 지원 플랫폼에 관한 연구 (A Study on the Industrial Difficulties Technology Support Platform using the Technology Coordinator)

  • 김종기
    • 한국전자통신학회논문지
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    • 제17권3호
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    • pp.521-528
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    • 2022
  • 새로운 철도 역사의 시작은 매년 진행되고 있다. 서울의 신림선은 통신기술을 기반으로 하는 신교통철도시스템이다. 신림선은 국가 표준규격인 KTCS-M을 기반으로 하는 국가 최초 무선통신기반 무인열차제어시스템으로 운용된다. 철도교통시스템에서 무선통신기술의 활용은 세계철도 시장으로의 수출 가능성을 시사한다. 이는 정부가 국내 철도산업을 육성하고 수출을 위해 다양한 지원 정책을 개발하고 시행한 결과이다. 본 논문에서는 국가가 시행하고 있는 철도산업기술의 국산화 지원 현황을 살펴보고, 철도부품의 해외 의존도를 벗어나 국산화 부품으로 대체되는 과정을 분석하였다. 이 과정에서 발생하는 산업체의 애로기술을 해결하기 위한 기술지원 플랫폼에 관하여 연구하였다. 향후 플랫폼의 구현과 활용을 위한 실행 개발이 필요하다. 향후 플랫폼이 구축되어 우리나라 산업체가 세계철도시장 수출 확장에 기여하는 기술력 향상에 필요한 도구로 활용되기를 기대한다.

한국형 고속전철용 신호시스템 시제품의 시험을 위한 통합신호시스템 구축 (Construction of Integrated Signalling System for Next-generation High-Speed Train)

  • 황종규;신덕호;정의진;이종우
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2002년도 하계학술대회 논문집 B
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    • pp.1220-1222
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    • 2002
  • The railway signaling system consists of several vital computerized equipments. Now the project for development of signaling system for the next-generation high-speed train is progressed according to the consortium. The developing signaling system by this project, kTCS(Korean Train Control System), is composed of kTCS-CTC, kTCS-IXL, kTCS-ATC and etc. The KTCS signaling has to be operated as a integrated system by interface between each signaling. To achieve these, communication protocols between each signaling have to be designed and message codes are defined. In this paper the configuration of integrated kTCS system and designed communication protocol is presented.

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한국형 고속전철용 통합 신호시스템의 설계 및 구축 (Design and Construction of Integrated Signalling System for Next-generation High-Speed Train)

  • 황종규;이종우;조용기;류호중
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2002년도 춘계학술대회 논문집
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    • pp.467-472
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    • 2002
  • The railway signal ing system consists of several vital computerized equipments. Now the project for development of signal ing system for the next-general ion high-speed train is progressed according to the consortium. The developing signal ing system by this project, kTCS(Korean Train Control System), is composed of kTCS-CTC, kTCS-IXL, kTCS-ATC and etc. The KTCS signaling has to be operated as a integrated system by interface between each signaling. To achieve these, communicat ion protocols between each signal ing have to be designed and message codes are defined. In this paper the configuration of integrated kTCS system and designed communication protocol is presented.

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말초동맥손상 11례 보고 (Eleven Cases on Peripheral Arterial Injuries)

  • 이승진;이남수;김형묵
    • Journal of Chest Surgery
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    • 제7권1호
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    • pp.109-116
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    • 1974
  • Eleven cases of peripheral arterial injuries treated at Korea University Woo Sok Hospital during these 3 years and 3 months from Feb. 1971Eleven cases of peripheral arterial injuries treated at Korea University Woo Sok Hospital during these 3 years and 3 months from Feb. 1971 to May 1974 were reviewed. Common causes of injuries were stab wound, automobile accidents and iatrogenic injuries during operation. Of the 11 arterial injuries 3 were femoral artery which` was the commonest in frequency and the next was 2 cases of brachial artery. The most frequent type of injury was transection. Laceration, contusion and spasm was also recognized. The need to operate immediately following an injury was emphasized. Operative procedures were end to end anastomosis and saphenous vein graft in 5 and 2 cases, respectively. Other cases were undergone multiple suture ligature due to staphyllococcal infection, insertion of polyethylene catheter, and lateral suture after thromboendarterectomy. Fractures and extensive soft tissue damage associated with arterial injuries with widespread destruction of the collateral circulation aggravated the situation and complicated the amputation of lower extremity in 4 cases. The factors influencing the amputation were time lag, presence of associated injuries and complications.[KTCS 1974;1:109-116] Common causes of injuries were stab wound, automobile accidents and iatrogenic injuries during operation. Of the 11 arterial injuries 3 were femoral artery which` was the commonest in frequency and the next was 2 cases of brachial artery. The most frequent type of injury was transection. Laceration, contusion and spasm was also recognized. The need to operate immediately following an injury was emphasized. Operative procedures were end to end anastomosis and saphenous vein graft in 5 and 2 cases, respectively. Other cases were undergone multiple suture ligature due to staphyllococcal infection, insertion of polyethylene catheter, and lateral suture after thromboendarterectomy. Fractures and extensive soft tissue damage associated with arterial injuries with widespread destruction of the collateral circulation aggravated the situation and complicated the amputation of lower extremity in 4 cases. The factors influencing the amputation were time lag, presence of associated injuries and complications.

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흉부외과 진료통계( I ) (Annual Report of Thoracic and Cardiovascular Surgery in Korea[ I ] - 1991 -)

  • 선경;곽영태;김형묵
    • Journal of Chest Surgery
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    • 제25권12호
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    • pp.1383-1390
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    • 1992
  • This is the result of the annual statistic analysis of thoracic and cardiovascular surgical cases in 1991, Korea. 14,715 cases of surgery[thoracic 8,995/cardiovascular 5,720] were done by 53 institutes replied. The order of frequency of cell type in primary lung cancer was squamous [62.3%] / adeno [23.9%] / small [6.4%] / adenosquamous [3.0%], and in mediastinal tumor, neurogenic[27.l%] / thymoma [27.1%] / teratoma[26.4%] / congenital cystic[12.0%]. Surgery for tuberculosis was decreased to 15.8% of overall infectious disease from the recent 6 year`s average 35.7%. In general thoracic surgery, the single most frequent operation was closed thoracostomy[4,047 cases] for pleural pathology. The ratio of congenital to acquired heart disease was 2:1, and acyanotic to cyanotic was 3:1. The order of frequency of congenital acyanotic heart disease was VSD [45.6%] / ASD [25.6%] / PDA [20.4%] / PS [2.9%], and that of cyanotic heart disease was TOF [42.6%] / PA [12.9%] / TGA [9.9%] / DORV [8.8%]. In 1,364 cases of valvular surgery, single mitral pathology was the most frequent candidate[729 cases, 53.4%]. In 243 cases of coronary surgery, bypassing graft materials were great saphenous vein[41.6%], internal mammary [39.5%], and artificial vessel[18.9%]. There were no specific differences in aortic surgery, assisted device implantation, and antiarrhythmic surgery as compared to previous study. This nation-wide inquiry will be continued and reported annually by KTCS Society.

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재발된 좌심방점액종의 치험 1예 (Recurrent Left Atrial Myxoma: A Case Report)

  • 장명;이철주;김광호;홍승록
    • Journal of Chest Surgery
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    • 제14권3호
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    • pp.260-267
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    • 1981
  • Left atrial myxoma is a rare disease and its recurrence is reported to be always possible whenever primary excision is incomplete. Cardiac Myxoma is rare disease of the heart, and it has a little chance of recurrence. We experienced a patient of recurrent left atrial myxoma who was 31 years old, had been gotten excision of Lt. atrial myxoma when she was 28 years of her age. She was gotten mitral valve replacement simultaneously during 2nd operation with difficulty. So we report this case with the review of the literatures. [KTCS 1981;3:260-267]Surgical Treatment of Acute Pyogenic Pericarditis followed the Sepsis Ki Woo Shin, M.D.,* Ho Wan Lee, M.D.* and Dong Jun Lee, M.D.* Two cases of acute pyogenic pericarditis are, one case, 12-year-old male patient, followed the bacteremia of pneumonia and other case, 9 year old female patient, followed the bacteremia of osteomyelitis. After the confirmed diagnosis by pericardial aspiration, the emergency pericardial window was made to relief the severe cardiogenic symptoms. The general symptoms were improved immediately, but 40 days and 15 days after pericardiostomy, in each case, the sign and symptoms of cardiac compression were seen with recurrent cardiac tamponade. Pericardiectomy with median sternotomy was performed in each case and thereafter the patients were discharged without any problems.

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차세대 열차제어시스템 안전전송장치 설계에 관한 연구 (A Study on Design of Safety Transmission Unit for Next-Generation Train Control System)

  • 정태운;추호철;문채주
    • 한국전자통신학회논문지
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    • 제18권4호
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    • pp.563-570
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    • 2023
  • 안전전송장치는 열차와 철도 시설 간에 통신을 제공하여 안전하고 효율적인 운영을 보장해야 하는 철도 시스템에서 사용되는 중요한 장치이다. 본 논문에서는 무선통신기반 차세대 열차제어시스템의 안전전송장치를 설계하고 시험하였다. 유럽규격과 국내규격을 분석하고 요구사항을 검토하여 국제적 수준의 안전전송장치의 HW 설계와 SW를 설계하여 제작하였다. 안전전송장치의 기능을 검증하기 위하여 시뮬레이터를 제작하여 설계된 기능이 구현되고 있는 것을 확인하였다.

흉부외과 진료통계( II ) -1992년- (Annual report of thoracic and cardiovascular surgery in Korea [II])

  • Sun, Kyung;Kwak, Young-Tae;Kim, Hyoung-Mook
    • Journal of Chest Surgery
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    • 제26권3호
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    • pp.163-169
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    • 1993
  • This is the result of the annual statistic analysis of thoracic and cardiovascular surgical cases in 1992 Korea. Overall 17, 520 cases of surgery [11, 732 cases of thoracic surgery by 54 institutes / 5, 788 cases of cardiovascular surgery by 48 institutes] were done. 1. Tumor [N=2, 532] : Lung was the most frequently involved organ by tumor [54.9%],and the remainders were mediastinum [16.2%] / esophagus [14.8%] / chest wall [11.7%] / tracheobronchus [1.3%] / pleura [1.1%] in order. Of 1, 082 cases of primary lung cancer surgery,the frequency of cell type was squamous [62.6%] / adeno [21.6%] / small cell [7.1%] / large cell [2.7%]. Of 411 cases of mediastinal tumor surgery,the frequency of cell type was neurogenic [28.8%] / thymoma [27.6%] / teratoma [17.7%] / congenital cystic [17.2%]. Of 376 cases of esophageal tumor surgery,primary cancer were the most [85.4%]. 2. Infection [N=3, 157] : Pleura was the most frequently involved organ [59.0%],and the remainders were lung [31.3%] / chest wall [8.6%] / mediastinum [1.1%] in order. 3. Miscellaneous [N=6, 043] : Lung and pleural disease esp. pneumothorax [85.1%] was the most frequent surgical indication. The remainders were chest wall anomaly [3.4%] / benign esophageal disease [3.4%] / diaphragmatic pathology [2.4%] / myasthenia [1.4%] in order. Of 85 cases of thymectomy for myasthenia gravis,thymoma was noted in 58.8%. 1. Congenital heart disease [N=3, 363] : The ratio of noncyanotic to cyanotic heart disease was 3:1. Of 2, 516 cases of noncyanotic heart disease,the frequency of disease entity was VSD [44.1%] / ASD [26.0%] / PDA [19.4%] / PS [3.3%],and that of 847 cases of cyanotic heart disease was TOF [29.4%] / ECD [15.6%] / TGA [9.7%] / DORV [7.6%]. Overall mortalities were 2.1% in noncyanotic and 12.2% in cyanotic heart surgery. 2. Acquired heart disease [N=1, 929] : Of 1, 422 cases of valvular surgery,single mitral pathology was the most frequent candidate [48.0%],and total 1, 574 prosthetic valves which were mainly mechanical [95.6%] were used. Of 376 cases of coronary surgery,triple vessel was the most [35.9%],and the frequency of bypassing grafts was great saphenous vein [52.9%] / internal mammary artery [44.7%] / artificial vessel [2.4%]. Overall mortalities were 3.4% in valvular and 4.5% in coronary surgery. 3. Pericardium,Cardiac tumor,Arrhythmia,Aortic aneurysm,Assist device,and Pacemaker : There were no specific changes compared to previous survey1]. This nation-wide inquiry will be continued and reported annually by KTCS Society.

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모바일 서비스 수용결정요인에 관한 연구 - 내재적 이용동기에 의한 정보기술수용모형의 확장을 중심으로 - (A Study on the Acceptance Decision Factors of Mobile Services: Focusing on Expanding Technology Acceptance Model by Intrinsic Motivation)

  • 주시각;손영곤;전상길
    • 경영과정보연구
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    • 제30권4호
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    • pp.117-146
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    • 2011
  • 본 연구는 WCDMA로 대표되는 제 3세대 이동통신서비스의 수용의향과 관련된 동기를 파악함으로써 테크놀로지 수용과 관련된 메커니즘을 이해하기 위해 진행되었다. 이를 위해 지각된 유용성과 지각된 편의성이 수용의향을 설명하는 이론중의 하나인 정보기술수용모형을 적용하여 살펴보았다. 나아가 지각된 유용성과 지각된 편의성 두 가지 요인의 선행 변수로 내재적 동기를 상정하였으며, 이것이 다시 수용의향에 이르는 통합된 정보기술수용모형을 검증하였다. 이를 위해 본 연구는 서울 및 대도시 거주 만 13세 이상 49세 이하 현 이동통신 서비스를 가입, 이용하고 있는 사람들을 대상으로 설문조사를 실시하였다. 모바일 서비스 수용과 관련된 제반 변수들의 영향 관계 및 모형의 설명력을 검증하기 위해 구조방정식을 통해 연구결과를 도출하였다. 그 결과 WCDMA 서비스에 대한 지각된 유용성과 지각된 편의성은 수용의향에 영향을 미치고 있었으며, 지각된 유용성은 지각된 편의성의 영향을 받고 있는 것으로 나타났다. 또한 내재적 동기는 지각된 유용성과 지각된 편의성에 직접적인 영향을 미치고 있었다. 연구결과에서 보여지듯 정보기술수용모형의 타당성을 다시 한번 확인할 수 있었으며 테크놀로지 이용에 있어 내재적동기에 의한 이용의 중요성을 시사해준다고 할 수 있다.

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