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      • 복부압박장치를 이용한 정위적방사선치료 시 호흡에 따른 폐암 용적의 동적변이 양상에 대한 연구

        박광순,김주호,박효국,백종걸,이상규,윤종원,조정희,Park, Kwang Soon,Kim, Joo Ho,Park, Hyo Kook,Beak, Jong Geal,Lee, Sang Kyoo,Yoon, Jong Won,Cho, Jeong Hee 대한방사선치료학회 2013 대한방사선치료학회지 Vol.25 No.2

        목적: 복부압박장치를 적용한 정위적방사선치료 시 환자 호흡에 기인하는 내부종양용적의 동적변이 양상을 연구하고자 하였다. 대상 및 방법: 2012년 4월부터 2013년 4월까지 복부압박장치를 이용하여 정위적방사선치료를 받은 폐암 환자 20명(상엽 7명, 중엽 4명, 하엽 9명), 총 67건을 대상으로 하였다. 치료 자세의 변동과 호흡에 의해 움직이는 종양 위치 변동을 알아보기 위해 4차원 cone- beam CT (4D-CBCT)를 사용하여 좌표 이동 값을 얻었다. 각 부위별로 LR (좌우), SI (상하), AP (전후) 방향의 벡터의 95% 신뢰구간(95% Confidence interval, 95% CI), 최대값, 그리고 최소값을 통하여 비교하였으며 자세변동 보정 값과 호흡변동 보정 값 간의 피어슨 곱 상관계수를 통하여 일치도를 분석하였다. 결과: 호흡에 의한 종양용적의 각 부위별로 변동은 폐 상엽에서 1.8~2.9 mm, 중엽과 하엽에서 2.3~5.4 mm, 2.2~4.0 mm로 분석되었다(95%CI, P<0.001). 자세변동 보정 값과 호흡변동 보정 값 간의 일치도($R^2$)를 살펴보면 상엽은 LR방향, SI방향, AP 방향에서 각각 0.75, 0.68, 0.63으로 나타났고, 중엽은 각각 0.82, 0.51, 0.92로 나타났으며, 하엽은 각각 0.63, 0.50, 0.34로 나타났다. 결론: 폐암의 정위적방사선 치료 시 복부압박장치의 사용으로 폐에 위치하는 종양은 환자 호흡에 의해 각 부위별로 각기 다른 양상을 보였다. 따라서 치료 자세에 대한 보정뿐만 아니라 호흡에 의한 변동을 보정해야만 한다. 또한 이러한 각기 다른 동적변이로 인한 오차의 보정 시 4D-CBCT의 사용은 매우 유용한 것으로 사료된다. Purpose: Abdominal compressor is used to control breathing in stereotactic body radiotherapy for lung tumors frequently. We evaluated the dynamic variation aspect of internal tumor volume by breathing. Materials and Methods: We reviewed 20 lung cancer patients (7 upper lung patients, 4 middle lung patients, 9 lower lung patients) who received stereotactic body radiotherapy using abdominal compressor between April 2012 to April 2013. Coordinate shift values were obtained by using four-dimensional cone-beam CT (4D-CBCT) to investigate treatment set-up error and moving tumor position error. To investigate how much difference of each part, we compared 95% confidence interval, maximum values and minimum values of three-dimensional vector value and analyzed conformity degree through the Pearson square correlation coefficient. Results: 95% confidence interval of three-dimensional vector value of each part is 1.8~2.9 mm in upper lobe, 2.3~5.4 mm in middle lobe and 2.2~4.0 mm in lower lobe. Conformity degree was the result that respectively is LR direction 0.75, SI direction 0.68 and AP direction 0.63 in upper lobe, LR direction 0.82, SI direction 0.51 and AP direction 0.92 in middle lobe and LR direction 0.63, SI direction 0.50 and AP direction 0.34 in lower lobe. Conclusion: We showed difference by each site in lung tumor due to respiration by using abdominal compressor. Therefore, we must correct treatment set-up error as well as moving tumor position error by breathing. It is also considered to be useful that it is the use of 4D-CBCT when correcting the error due to various dynamic variation.

      • KCI등재

        포털 뉴스섹션의 편집요인이 뉴스 이용자의 기사선택에 미치는 영향에 대한 분석

        박광순(Park, Kwang-Soon) 한국산학기술학회 2012 한국산학기술학회논문지 Vol.13 No.5

        본 연구에 이용된 편집요인은 뉴스 카테고리, 사진기사, 굵은 활자체의 기사제목, 신문제호, 기사제목의 내용 등으로 구성되었다. 이 같은 요인 중 사진기사, 굵은 활자체의 기사제목, 기사제목의 내용 등 3개 요인만이 뉴스 이용 자들의 기사선택에 영향을 미치는 것으로 나타났다. 이들 요인을 포털뉴스 이용시간의 차이에 따른 분석에서는 뉴스 카테고리, 굵은 활자체의 기사제목, 신문제호 등 3개 요인만이 영향을 미치는 것으로 나타났다. 뉴스 장르가 뉴스 이용자들의 기사선택에 미치는 영향에 대한 분석에서는 정치, 경제, 사회, 스포츠, 문화/연예, 국제, IT/과학 장르 중 사회, 문화/연예, 국제 등 3개 요인만이 이용자들의 기사선택에 영향을 미치는 것으로 나타났다. 이 들 요인에 대한 남녀집단 간의 분석에서는 경제, 스포츠, 문화/연예, IT/과학 등 4개 장르에서 기사선택에 차이가 있 는 것으로 나타났다. 본 연구는 오프라인 신문에 비해 다양한 방식으로 기사를 노출시키는 온라인 매체에서 전통적인 신문편집의 요소가 기사선택에 어떠한 영향을 미치는가를 파악하여 온‧오프라인 신문 간 편집요소의 역할에 대한 차 이와 온라인 매체에서의 효과적인 편집방안을 수립하는데 기초적인 단서를 제공할 목적으로 수행되었다. The editorial elements which are used in this paper are made up of news categories, photograph articles, titles of article written bold strokes and contents of article. Of these elements, only the three elements of photographic articles, the titles of article written bold strokes and contents of article had some effects on the choice of articles. For the portal news, only the news categories, the titles of article written bold strokes and the name of newspaper had an effect on the choice of articles. Of the news genres such as politics, business, social affairs, sports, culture/entertainment, world news and IT/science, only the three genres of social affairs, culture/entertainment and world news had some effects on news users' choice. For the difference between man group and woman group in analyzing the choice of articles, there was the difference in four elements of business, sports, culture/entertainment and IT/science.

      • KCI등재

        포털미디어의 스포츠 영상을 통해 인지된 섹슈얼리티 요소와 섹슈얼리티 인지도에 미치는 영향

        박광순(Park, Kwang-Soon) 한국산학기술학회 2009 한국산학기술학회논문지 Vol.10 No.7

        스포츠선수들에 대한 섹슈얼리티는 ‘유니폼 관련 섹슈얼리티’, ‘선수의 신체적 특징 관련 섹슈얼리티’, ‘외모 관련 섹슈얼리티’ 요인으로 구성되었다. 포털사이트의 스포츠 영상에 묘사된 섹슈얼리티가 포털미디어 스포츠 소비자 들에게 미치는 영향에 대한 분석에서는 남자 실험집단에서만 차이가 있는 것으로 나타났다. 남자집단의 피실험집단과 남녀경기 처치집단 간 차이가 있는 것으로 분석되었다. 포털미디어의 스포츠 영상에 묘사된 섹슈얼리티에 대한 인지 도는 남자집단의 피실험집단에 비해 남녀경기 처치집단이 더 높은 것으로 나타났다. 따라서 포털미디어의 스포츠 영 상에 묘사된 섹슈얼리티는 남성스포츠 소비자들에게 더 큰 영향을 미치는 것으로 볼 수 있다. This paper is aimed at studying the sexuality elements and their perceptibility in the sports photographs and images of internet portal media. The sexuality elements are composed of athletes' uniform, body and external feature. In an analysis of sports' users through portal media, there were some differences in an experimental group of men. There was the difference between an experimental group of men and a of men and women sports game. The perceptibility of sexuality imaged by sports images of men and women games in portal media was higher in an of men and women sports game than the experimental group of men. Accordingly, the sexuality imaged through sports images of portal media had a higher effect on sports' men-users.

      • KCI우수등재

        한국수산업의 구조분석 - 1946년 ~ 1965년의 추이를 중심으로 -

        박광순 ( Kwang Soon Park ) 한국경제학회 1967 經濟學硏究 Vol.15 No.1

        1. Fishery is one of the important industries in Korea. It earns a lot of valuable foreign money every year. The annual exports of fishery reach 20 percent of total amount of Korean exports. However, it is said that the characteristics of fishery in Korea are its low productivity and low income. These characteristics are not because of the unsuitableness of physical environment concerning fishery in Korea, but because of the insufficiency of man`s effort to develop it. This means the structual deficiency of Korean fishery. This study is purposed to analysis the structure of Korean fishery with emphasis on its transition from 1946 to 1965. It is a well-known fact that the physical environment for fishery in Korea is very suitable for it. Our country is a peninsula surrounded by seas on three sides, having a long coast line reaching 26,000 kilometers and a very wide continental shelf amounting to about 500,000 square-kilometers. The neighbouring waters of Korea have also fitting temperature, and the tides are interchaged properly on the seas. At the same time, they contain abundant marine resources, such as fishes of about 854 species, shell fish and other molluse fishes of about 1000 species, and seaweeds of about 400 species. Judging from these points, we may say that the physical environment for fishery in Korea is a gift of nature. On the contrary, man`s effort to develop those resources had been very lukewarm and stagnant till the opening of the port at the end of the 19th century. With the opening of the port Japanese fishermen advanced to the Korean seas, and they contributed somewhat to the development of fishery in Korea at the technical side. Occupying the leadership of fishing in the neighbouring waters of Korea, they made Korean fishermen fall into the external stagnation of minor scale household management. This is one of the important reasons why Korean fishery has not developed continuously, and also the reason why Korean fishery has not escaped from the stagnant situation of low productivity and law income. These characteristics are due to the structural defects of fishery mentioned as below. Here are the significance and necessity of analysis to the structure of fishery in Korea. 2. At the first, we are going to analyze the production structure of fishery, secondly, the management sructure of fishery, and lastly its circulation structure. The important characteristics of the production structure of Korea fishery are as follows; First the fishing boats which are the most important means of production of the fishery are very little quantitively. As many we see at the following Table 1, the number of the fishing boats including fish-carrier amounts to 51,052 vessels at the end of 1965. It does show that the percapita fishing boatsare only 0.04 vessels. ◁표 삽입▷(원문을 참조하세요) Source: The Bank of Korea. Bureau of Fisheries, Ministry of Agriculture and Forestry. The number of fishing boats has been increased from 48,837 vessels in 1946 to 51,052 vessels in 1965. The speed and rate of growth of fishing boat is lagging far behind the growth of fisheries population. The rate of growth of fishing boat is estimated to reach only to 4.5 percent during twenty years. On the other hand the fishery population has increased by 234.5 percent since 1946. It means that Korean fishery has been sinking year by year. ◁표 삽입▷(원문을 참조하세요) Source: Bureau of Fisheries, Ministry of Agriculture and Forestry. Second the most of fishing boats are also small in scale and non-powered wooden boats. As we see at the Table 1, the average tonnge of Korean fishing boats in 1965 is only 3.98 tons. Although powered boats form 14.8 percent of all the fishing ships, most of them are made of wood. As we may see at the Table 2, the ships less than 5 tons form 85.6 percent of all the fishing boats. On the contrary, the ships more than 50 tons form only 1.1 percent of them. These prove the fact that the productive power of Kore

      • KCI우수등재

        한국어업공동체의 성립과 존립양태에 관한 조사연구 - 어촌계를 중심으로 -

        박광순 ( Kwang Soon Park ) 한국경제학회 1971 經濟學硏究 Vol.19 No.1

        1. In Korean fishing villages, a living organism has been formed. It is based upon a strong co-operative union, which might be found in co-operative production systems and joint ceremonies. This organism has been transformed to fishing village association (0-Chon Gae), which also plays an important role in the lives of fishermen at present. What is the origin of this co-operative association? Why does the association play such an important role in fishing villages? It is serving to the enhancement of fichermen`s life condition? And what is the historical relationship between fishing village community and the fishing village association of today? Korea has been proud of her abundant gift of nature in marine industry. However, our efforts devoted to the exploitation of the gift have been weak, and industrial revolution in the filed of fishery was not accomplished. Naturally, our fishing villages have suffered from overpopulation and vicious circle of low productivity and low income. Then, what is the socio-economic basis of overpopulation in the midst of poverty in Korean fishing villages? In my view, it might have been derived from the common fishery which is bases on joint ownership of fishing grounds that are the most important means of production of fishing industry. Therefore, to make a thorough-going analysis on formation, evolution, discomposition, and the present situation of fishing village community will surely serve for the modernization of Korean fishery. 2. It seems to me that water exploitation began with the settlement of Korean people in the Korean peninsula. Even though they were gathering only seaweeds in the coasts, there must have been some orders and systems in their society. The first form of fishery management is believed to take the form of joint undertaking, but it was subsidiary to that agriculture in the coastal villages, In the old age, the fishery was not specialized and not seperated from agriculture, and fiching village community was not formed as an independent organization. The development of social division of labour, the improvement of technology, and the increasing demand for marine products based on growth of population, however, made fishery an independent occupation. At the same time, coastal village which had also worked as an agricultural village changed into pure fishing village. In the course of the development of Korean people, chronological estimation of the time when the fishing village community was established, is not possible. But the community is assumed to be founded at the time when pure fishing villages of the seashore were formed. Such a fishing village is presumed to be made in the later period of Korea Dynasty which was provided with feudalistic centeralization of administration. This fishing village community has been evolved in conjunction with the development of division of labour , technical improvement, the change of socio-economic systems, and at present the community is transformed to the fishing village association (0-Chon Gae) that is legalized. 3. There few reference books on the management of common fishery. Therefore, we must take the recourse to field survey. As a result, the following three types of operation of common fishery are pointed out. a. The original form of fishing village community is found in the fishing villages of remote islands, of which the main and important products are seaweeds. Therefore common fishery is operating in the form of the harmonious teamwork of villagers, with the joint ownership of the means of production including fishing grounds under the communal restraints, which could be seen in the villages of mediaeval Europe. b. However, the improvement of fishing technique brought about a change and discompostion to the common fishery. The degree of discomposition of common fishery is closely related to the capital inputs in the fishery. In the coastal marine production, the common fishing system of that fishery has been changed

      • KCI우수등재

        LALR(1) 분석에서의 Conflict의 효율적인 추적

        박광순(Kwang Soon Park),최광무(Kwang Moo Choe),박우전(Woo Jun Park) 한국정보과학회 1989 정보과학회논문지 Vol.16 No.4

        LALR(1) 분석에서 발생하는 conflict의 원인을 찾아 제거하는 일은, 적지않은 LR(0) 상태들을 일일이 따라가고, 또 프로덕션을 검사해야 하는 매우 번거로운 작업이다. DeRemer와 Pennello는 conflict의 원인을 알려주는 정보(추적)를 파서 생성 시스템이 특정한 양식으로 출력하는 방법을 제시하였다. DeRemer와 Pennello의 추적 계산 방법에서는, lookahead 집합의 계산을 위하여 구성한 방향 그래프를 이용하여 추적을 구성하는 일부 요소를 쉽게 계산하지만, 비효율적인 측면을 가지고 있다. 본 논문에서는 박철희등의 새로운 LALR 해석논리에 기초하는 효율적인 새로운 추적 계산 방법을 제시하였다. 제안된 새로운 방법은, lookahead 집합의 계산을 위하여 계산된 넌터미널들 사이의 관계를 효과적으로 이용하여, 보다 효율적으로 추적을 계산한다. 기존의 방법과 제안된 새로운 방법을 KAIST 파서 생성 시스템에 구현하고, 몇개의 문법에 대하여 실험을 하여, 새로운 방법이 기존의 방법보다 효율적임을 보였다. Tracing of conflicts manually is not so easy in LALR(1) analysis; It involves troublesome tracing of LR(0) states and/or examination of productions in the grammar. DeRemer and Penello suggested an automatic tracing method, where information called trace which shows sources of conflicts, is produced in a predefined form. In the original method of computing traces, a relation needed in computing lookahead sets is used to find out the items which make the conflict symbol be included in the lookahead set of a reducible item. In this thesis, the trace computation method is re-examined under new formalism of Park et al., and a more efficient method based on the formalism is proposed. Both the old and new method are Implemented on KAIST Parser Generating System (KPGS), and experimental results for the comparison of the two method are presented.

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