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        • KCI등재

          Preventable Trauma Death Rate in Daegu, South Korea

          문성배,이숙희,류현욱,김종근,안재윤,김성진,전제천,이경우,성애진,김윤정,이대로,도병수,박신률,이진석 대한응급의학회 2016 大韓應急醫學會誌 Vol.27 No.5

          Purpose: This study was performed to investigate the preventable death rate (PDR) in Daegu, South Korea, and to assess both its affecting- and preventable-factors to improve the treatment of regional trauma patients. Methods: All cases of traumatic death that occurred between January 2012 and December 2012 in five hospitals in Daegu were analyzed retrospectively by a panel review. Cases were classified into preventable (P) and non-preventable deaths (NP). We determined the affecting factors of trauma deaths and preventable factors during trauma care. Results: The PDR was 25.2%. Significant differences by mode of arrival, day of injury, cause of death, and time of emergency department (ED) arrival were observed between P and NP groups. According to the logistic regression analysis, preventability was associated with patients transferred from other hospitals, ED arrival at night and dawn, and non-head injuries. A total of 145 preventable factors were discovered in 59 preventable trauma deaths. When we categorized by location, the ED was the most common, with 71 cases, followed by 57 prehospital preventable factors. When we classified the preventable factors by process, 76.8% were process-related and 23.4% were structure-related. Conclusion: Our study is valuable to build an adequate trauma system in Daegu as it provides the baseline quality control data. Efforts to mediate the preventable factors were revealed in this study, and continuous reviews to calculate and track the PDR are needed to evaluate the local trauma system and establish a system specific to Daegu.

        • 2차원적 음원추적에 관한 연구

          문성배,전승환 한국항해항만학회 1996 韓國航海學會誌 Vol.20 No.4

          When navigating in or near an area of restricted visibility, it is necessary to be heard the whistle, bell and/or the siren of lighthouses or ships at times. Even though we can get the brief informations about the property of sound, the direction and range of a sound radiator, it is not enough to get the accurate informations for decision making. Generally the audio frequency is known as 16~20, 000Hz, but the earshot is shorten and discrimination of sound is more difficult when there is some noise. The sound pressure is 60dB at the moment when human speaks 1 meter away. Usually the noise pressures are 40dB in a silent room and 60dB on the quiet street, respectively. It this study, the basic algorithm and a method of signal processing are suggested to trace the direction and range of the source radiator using the signals received through not a physical sense but the microphone sensors.

        • KCI등재

          A Study on the Development of a Wide-Area Monitoring and Control System for Tug/barges

          문성배,김보경,정태권 한국항해항만학회 2009 한국항해항만학회지 Vol.33 No.9

          The traffic of tug/barges which are carrying construction materials, large plants for harbor development, or offshore structures has recently increased in the coast of Korea. The west and south coast of Korea are always congested due to a lot of islands and traffic concentration. Specially tug/barges have higher probability of marine accidents due to their bad maneuverability than others. Considering the operational circumstance and maneuverability, this study was to develop a wide-area monitoring and control system for tug/barges in the coastal area of Korea. The system was made in the form of three program modules i.e. navigation analysis program module, monitoring and control program module, database module. And seven functions were programmed to monitor and control the tug/barges efficiently. These are ship information search, tug/barge information and track management, designated area and safe navigation zone management, fairway management, accident data management, warning of danger, safety information management.

        • KCI등재후보

          조타명령의 음성인식을 위한 최적 특징파라미터 검출에 관한 연구

          문성배,채양범,전승환,Moon, Serng-Bae,Chae, Yang-Bum,Jun, Seung-Hwan 해양환경안전학회 2007 海洋環境安全學會誌 Vol.13 No.2

          The goal of this paper is to develop the speech recognition system which can control the ship's auto pilot. The feature parameters predicting the speaker's intention was extracted from the sample wheel orders written in SMCP(IMO Standard Marine Communication Phrases). And we designed the post-recognition procedure based on the parameters which could make a final decision from the list of candidate words. To evaluate the effectiveness of these parameters and the procedure, the basic experiment was conducted with total 525 wheel orders. From the experimental results, the proposed pattern recognition procedure has enhanced about 42.3% over the pre-recognition procedure. 이 논문은 선박의 자동조타장치를 음성인식으로 제어할 수 있는 시스템을 개발하기 위한 기초연구로 SMCP(IMO Standard Marine Communication Phrases)에 제시된 조타명령문의 구성 형태를 분석하여 화자의 의도를 예측할 수 있는 특정 파라미터를 추출하였다. 그리고 이 파라미터를 이용하여 1차 패턴인식 과정으로부터 도출된 후보단어 집합으로부터 최종 단어를 결정하는 후처리 인식 프로시저를 설계하였다. 이 프로시저의 유용성을 검증하기 위하여 음성인식용으로 총 525개의 조타명령문을 획득하였고, 표준패턴 기반의 인식과정 인식률과의 비교실험을 수행하였다. 실험결과 의도예측 특정 파라미터를 이용한 인식 프로시저의 인식률이 약 42.3% 향상되어 유효함을 알 수 있었다.

        • 선박의 근무강도 평가요소 개발에 관한 연구

          문성배,이춘기,전승환 한국항해항만학회 2013 한국항해항만학회 학술대회논문집 Vol.2013 No.추계

          '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

          현재 우리나라는 보유 또는 지배선박이 약 1,000척, 3천만G/T로 노르웨이에 이어 세계 6위의 해운강국으로 성장하였다. 그리고 수많은 사관과 부원들이 다양한 선박에 승선하고 있으며 해운산업이 성장할수록 더 많은 선원들이 선박에 근무할 것으로 예상된다. 그러나 IMO와 ILO 등에서는 선원들의 선박근무환경 및 휴식 등에 관해서 최소한만을 규정하고 있고, 이로 인하여 선원들이 높은 노동 강도에 시달리게 되고 피로와 스트레스가 누적되어 해양사고의 한 원인이 되고 있는 실정이다. 이 연구에서는 각 선박의 고유 특성과 운항환경 등으로 고려한 선박의 근무강도를 평가할 수 있는 요소와 지수를 개발하기 위하여 선박에 장기간 승선한 경험이 있는 응답자로 하여금 각 평가요소에 대하여 주관적으로 인지하는 선박의 근무강도를 평가하도록 하였다. 이 평가요소와 지수를 기반으로 선원들을 각 선원의 특성과 여건에 맞는 선박에 배정함으로서 선원들의 피로와 스트레스를 경감시켜 해양사고의 예방에 기여할 수 있을 것으로 예상된다.

        • KCI등재

          A Study on the Alternative Routes for Dangerous Cargo Carriers at Gwanjanghang Sudo and Maenggol Sudo

          문성배 한국항해항만학회 2010 한국항해항만학회지 Vol.34 No.9

          This study is to improve the marine traffic environment along the west coast of the Korean peninsular so as to prevent the traffic accidents of the dangerous cargo carriers. The most used routes of the vessels were investigated from GICOMS database and the questionnaire survey. Gwanjanghang Sudo strait and Maenggol Sudo strait were considered to have some potential risks to the vessels. In this study, the alternative routes were developed to substitute the current routes near Gwanjanghang Sudo strait and the new boundary line of The Traffic Prohibited Area for Tanker was suggested to contain the Maenggol Sudo strait.

        • KCI등재

          협력 파트너의 지식파급이 기업의 혁신성과에 미치는 영향

          문성배 한국혁신학회 2019 한국혁신학회지 Vol.14 No.4

          Firms’ product innovations can be differentiated into new to the firm (imitative innovation) and new to the market (drastic innovation). Utilizing the 2016 Korea Innovation Survey for the manufacturing sector, this study empirically analyzes the effect of spillovers from different cooperative partners. The estimation results show that spillovers from cooperative partners have different effects on the sales of innovative products. Spillovers from private customers, universities, and research institutions increase the sales of products new to the market. On the other hand, incoming spillovers from competitors matter for the sales of products new to the firm but do not have any significant impact on product innovation new to the market. 기업의 기술혁신은 기존에 존재하지 않았던 새로운 제품을 출시하는 시장 최초인 혁신(급진적 혁신)과 시장에는 존재하지만 그 기업에게는 최초인 혁신(모방적 혁신)으로 구분할 수 있다. 본 연구는 2016년 한국기업혁신조사 제조업 부문 자료를 활용하여 기업의 협력 파트너별 지식파급이 시장 최초 혁신과 기업 최초 혁신에 미치는 영향을 실증 분석하였다. 추정 결과에 따르면 지식의 원천별로 혁신성과에 미치는 효과가 다른 것으로 나타났다. 민간 수요기업, 대학, 공공 연구기관의 지식파급은 시장 최초 혁신제품의 매출을 증가시키는 것으로 나타났다. 반면 동일 산업 내 협력파트너의 지식 유입은 기업 최초 혁신제품의 성과에는 긍정적이지만 시장 최초 혁신제품의 매출에는 유의한 영향을 주지 않는 것으로 나타났다.

        • 2차원적 음원추적에 관한 연구 II

          문성배,전승환 한국항해항만학회 1998 韓國航海學會誌 Vol.22 No.4

          The whistle is a very important information source for the safety navigation under foggy weather. But navigator has no concern about this, because it must be achived by human hearing sense and considered as a vague signal. If the range and relative bearing of signal source can be detected automatically, it would be very useful system for preventing marine casualties making a lot of economic loss and environment pollution. Before the algorithm of 2-dimensional sound source tracking system was reported. This paper describes the method that can obtain the time lag between three signals and the theory of cross-correlation analysis and subtraction method for cauculating the time lag by using the digital signal data sequences. And a series of experiments were carried out for various position of sound source in the range from 200cm to 530cm. As a result, we have recognized that sound source tracking system is possible to the sea field with improvement of position error.

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