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李良元,李炳甲 中央醫學社 1972 中央醫學 Vol.22 No.2
An experimental study of carbon monoxide concentration in air of the restaurants(total 50) and carboxyhemoglobin saturation of workers(512) who were working in the restaurants was conducted by the staffs of the Dept. of Preventive Medicine from November 1970 to December 1971. Carbon monoxide concentration in air was measured with Kitagawa CO detecting tube and carboxyhemoglobin saturation in the blood of workers was measured by The expired air analysis technique following Dr. Breysse and Gabay. Each worker was asked to inhale and exhale deeply prior to commencement of the test. They were then requested to inhale and hold their breath for approximately 20 seconds after which they were instructed to exhale "normally" then to blow the remainder of the breath into a balloon. This expired air was then immediately examined with the Kitagawa tube and carboxyhemoglobin saturation was calculated from the following regression relationship: COHb%=0.5+(CO ppm/5) The findings and results obtained were summarized below: 1. The mean CO concentration in air of restaurants of Class A, where only propane gas was used for fuel, was less than 50 ppm and the mean COHb saturation in the blood of workers was 7.5% in summer and 8.1% in winter. 2. The minimum concentration of CO in air of the hall of Class B restaurants where used gas was 96.5 ppm during summer and maximum concentration was 180.3 ppm in the kitchen during winter. And the COHb saturation was 12.5-17.1% which could initiate the slight CO poisoning. 3. In the restaurants of Class A where charcoal was used for fuel, the air contained 83.5-144.8 ppm of carbon monoxide and the COHb saturation in the blood of workers was 11. 1-15.4% which could cause slight symptoms of CO poisoning. 4. Mean concentration of CO_ in the B or C graded restaurants where charcoal was used, was 265 ppm and the COHb saturation was as high as 20% which could cause moderate CO poisoning to the workers. 5. Even in the summer, so called wine shop where coal was used for fuel contained more than 124.3 ppm of CO and in the winter it contained 221.5 ppm. Among them we could find some contained as much as 350 ppm of carbon monoxide in air. The mean COHb saturation in the blood was 21.4% which could cause moderate symptoms of CO poisoning. 6. Highly significant correlation was found between the COHb saturation and the concentration of CO in air of restaurants.
이양원,신광성,Rhee, Yang-Won,Shin, Kwang-Seong 한국산업정보학회 2012 한국산업정보학회논문지 Vol.17 No.7
현대의 범죄는 날로 치밀해지고 있으며 수법 또한 매우 교묘하다. 범죄 중에서 절도죄인 소매치기는 대부분 붐비거나 혼잡한 곳에서 발생한다. 그러나 현재에는 인적이 드문 한적한 곳에서 더 많이 발생하고 있다. 본 논문에서는 소매치기의 수법과 종류에 대하여 알아본다. 그리고 비디오를 분류하여 현실적으로 제출하기 위하여 서있는 경우, 앉아있는 경우, 그리고 누워있는 경우로 분류한다. 이는 소매치기를 대상으로 영상 포렌식의 증거 자료로 제출하기 위하여 분류하는 것이다. 본 논문은 소매치기 예방은 물론 소매치기 범죄의 대처를 위해서 반드시 필요하다고 사료된다. Currently, crimes are becoming increasingly dense, the technique is also very tricky. Pickpocket, the theft of crime, is occurred at the most crowded or congested places. However, nowadays occurs more commonly at the rare and secluded place in the human. In this paper, we investigate the techniques and types of pickpockets. And realistically to submit classified video, to standing, sitting, and lying to the classification. Target for pickpockets, we classify it to submit a video forensic evidence. This paper will be needed in order to prevent and cope with pickpockets crimes.
인문지리정보 통합DB 구축을 위한 데이터 모델링 및 온톨로지 연계 방안
이양원,구자용,최진무 한국지도학회 2010 한국지도학회지 Vol.10 No.2
최근 국가지리정보유통망을 통한 공간정보 통합에 대한 논의처럼, 속성데이터 중심의 인문지리정보 데이터베이스도 시작 단계에서부터 향후의 통합을 고려한 프로토콜을 필요로 한다. 본 연구에서는 효율적인 인문지리정보 DB 구축을 위해 DB 모델의 원칙과 절차, 즉 데이터 모델, DB 정규화, 데이터 무결성에 대해 인문지리정보 사례를 통해 방향을 제시하였고, 인문지리정보의 변화를 수용할 수 있는 시간성 확보 방안과 온톨로지와 통합DB를 효과적으로 연계하는 방안을 제시하였다. 특히 시간에 따른 정보의 변화를 저장하기 위해 TimeStamp 객체와 TimeSPAN 객체를 DB에 임베드하였고 시간관계 함수를 이용해 검색할 수 있도록 하였다. 또한 수시 갱신이 필요한 인문지리정보 DB를 온톨로지와 연계하기 위해서는 DBMS 내의 RDF 객체를 활용하는 효율적인 방법을 제시하였다. 이러한 방안은 인문지리정보 DB 뿐만 아니라 수시갱신이 요구되는 대용량의 DB 구축시 가장 근본적으로 검토하여야 할 내용을 제시해 줄 것이다. Developing a database for human-oriented information system requires effective integration of various geographic information. In this context, this study discussed mainly two parts: 1) basic rules for data model and 2) the methods for an extensible database with temporality and ontology. The basic rules for data model of the integrated database included suggestions for data modeling, DB normalization, and data integrity. For temporal expansions of the integrated database, TimeStamp and TimeSPAN objects were proposed to manage temporal change of geographic information. To combine the GIS database with ontology, RDF object in a DBMS was suggested as an alternative to the XML-based RDF structure for effective maintenance of DBMS and ontology. The methods suggested in this paper would provide fundamentals to build large databases that require frequent update.
이양원 한국공학교육학회 2008 Ingenium(人材니움) Vol.15 No.3
국제공학교육·연구 네트워크(INEER)1)가 주최하는 제12회 ICEE2008(International Conference on Engineering Education)가 “21세기 공학교육 및 연구의 새로운 도전”이라는 주제를 가지고 지난 7월 28에서 7월 31일까지 4일간 헝가리 수도 부다페스트와 유네스코 지정 세계문화유산 도시인 페츠에서 개최되었다. 학회장은 페츠(Pecs)대학의 Mecsi 교수와 부다페스트 BME 대학의 Molnar 교수가 공동으로 맡았으며, 한국에서는 한국공학교육학회의 전임회장인 강성군 교수를 비롯한 학회임원과 각 대학의 공학교육혁신센터 관련 교수 및 연구원을 포함한 25명이 넘는 인원이 참석하였다.
Coupling Server-Side FOSS for Geographical Visualization and Analysis on the Web
이양원,김형우,이하정,이정훈 한국지도학회 2011 한국지도학회지 Vol.11 No.2
The FOSS (free and open source software), which ensures free reuse and redistribution of source code without restrictions of license, has become a new approach to building an information system nowadays. With the trends of GIS extension to the web, the utilization of FOSS for sharing and mapping of spatial data is also thought of as a valuable work. While existing FOSS applications for web-based GIS simply focused on the mapping of environmental and ecological information, the research on analysis-oriented FOSS for web-based GIS has been rarely carried out. Moreover, web-based coupling of spatial DBMS (database management system), GIS tool, and statistical package was not sufficiently challenged although each of the components has been well utilized. Hence, the objective of this paper is to present a GIS application framework for coupling server-side FOSS for geographical visualization and analysis on the web. We implemented a brokerage module for the invocation of FOSS functions on the server and developed an API (application programming interface) for coupling PostGIS, GRASS, and R Statistical Package. We also employed Google Maps and Google Earth Plug-in as a geo-browser for the visual exploration of spatial data. A feasibility test for our system was carried out using a regression analysis for the relationships between NDVI (normalized difference vegetation index) and environmental factors in South Korea.