영산(榮山) 서기원(徐箕源) 교수(敎授)

서기원 순천향대학교 사회과학연구소 1998 사회과학연구 Vol.3 No.1

Highly efficient flexible organic solar cells on PEDOT and ITO free transparent electrodes

서기원,이정용 한국고분자학회 2019 한국고분자학회 학술대회 연구논문 초록집 Vol.44 No.1

화장실의 변기 절수기술개발 동향

서기원 대한설비공학회 2010 설비저널 Vol.39 No.9

品質官理 分任組 活動의 改善方案에 관한 硏究

徐基源 청주대학교 이공대학 공업경영학과 1983 工業 經營 論集 Vol.1 No.-

화장실의 악취제거 및 절수기구 소개

서기원 대한설비공학회 2005 대한설비공학회 강연회 및 기타간행물 Vol.- No.-

GATT/BOP決定과 UR協商妥結에 대응한 韓國農業의 發展方向

서기원 순천향대학교 1994 논문집 Vol.17 No.3

As the Uruguay Round agreements are settled down, Korean agriculture faces a critical situation. But, agriculture has to be maintained and to survive anyhow, because it is one of the basic industries in Korea. And it could be continued and developed, as long as we try to concentrate on all of our efforts. In this regards, the most important factor to develop and promote Korean agriculture is consistent government policies. Thus government must put the following agricultural policies into force. ① Reformation of agricultural structure, ② Various kinds of support for reducing the production costs. ③ Betterment of marketing institutions and activities, ④ Enhancement of agri-businesses, ⑤ Enlargement of domestic subsidy policies which are allowed by the UR agreements, ⑥ Revision of acts and systems which are related with the support of agricultural activities. In fact, if all the individuals and institutions concerned with the agricultural development are substantially and hammonically coordinated together for the reformation of agriculture, they could achieve the fruitful results. Then they would meet the bright future of Korean agriculture.

샴 네트워크 기반 전장상황 분석을 위한 추천 학습모델

서기원,신유경,진소연,이우신,안종철,서창호 한국컴퓨터정보학회 2023 韓國컴퓨터情報學會論文誌 Vol.28 No.1

점점 더 복잡해지고 다양해지는 무기체계와 급격하게 변화하는 전장정보에 따라서, 인공지능을 사용한 전장 상황 분석 연구의 필요성이 대두되고 있다. 본 논문에서는 전장 상황을 분석하여 현재 상황에적합한 가설을 추천해주는 분석결과 추천 학습모델의 학습 및 설계 방안을 제안한다. 학습 모델은두 가설을 비교하여 결정되는 선호 여부를 레이블 데이터로 활용하여, 어떠한 가설이 현재 전장상황을잘 분석하고 있는지 학습한다. 또한 후처리 랭킹 알고리즘을 통하여 각각의 가설에 대한 종합점수를부여하고, 점수가 높은 상위 가설들을 지휘관에게 추천할 수 있음을 확인한다.

주요국 회외영농정착의 추진실태

서기원 한국국제농업개발학회 1989 韓國國際農業開發學會誌 Vol.1 No.1

The history of agricultural emigration is quite long. However, it was not until nineteenth century when the emigration was realized extensively and intentionally under the government initiative. The United Kingdom had secured the largest colony in the world, because the colony of U.K. consisted of countries which had extensive land with small population as Canada, Australia, Burma and Malaysia except India. So the U.K. at that time had to induce foreign immigration in large numbers. The feature of U.K. s migration policy is classified into two types as follows. The first is to let the British emigrate to colonial countries. The second is to let the colonial people emigrate to other colonial countries. The former can be explained in the case of Canada and Australia. The latter case was the emigration from India to Burma, Malaysia, etc. in order to secure farm workers. We can take Fiji as the latter type of immigration. The immigrants were mostly farmers. They worked at sugar plantations and contributed to agricultural development of Fiji. The inhabitants of Fiji consist of Indian, native Fijian, Chinese, Australian and others. Indian and native Fijian accounts for 50.2% and 44.7% of present Fijian population respectively. Consequently, it seems that the Indian will be a dominant race rather than the other races in Fiji in the future. On this point. Fiji may be a typical case that the agricultural immigrants came to dominate the whole country. On the other hand the immigrants to Canada were mostly British. The British immigrants account for 45%, the French 29% and Asian more than 10% of recent Canadian. Canadian has accepted agricultural immigration and favored investment immigration recently because the country had extensive land with very small population. From this viewpoint. Canada may be the most eligible country to us to emigrate for farming. It had been difficult for Asian to emigrate to Canada because of racial discrimination by the end of 1950's. But Canada could not but abolish racial discrimination and accept many Asian immigrants from the 1960's for shortage of labor force. Consequently the percentage of Asian emigrants to Canada increased rapidly in 1980's. For many countries in South America, especially Argentina and Brazil had many agricultural immigrants which were second to Canada. These two countries accepted white immigrants in nineteenth century due to the lack of labor force to cultivate the broad land. But the number of agricultural immigrants did not come up to their expectations because there were more immigrants for industry and commerce than that of agriculture. Perceiving the above situation, Japan started its emigration to Brazil intentionally and systematically in 1908. Japan had long planned to emigrate to overseas because of small land with many population. Regrading Brazil as the most eligible country to emigrate, Japan had propelled the agricultural emigration program. We need to pay, attention to the emigration program of Japan which had the following characteristic. When they selected emigrants, they encouraged to make a group composed of diverse occupations such as farm workers, doctors, teachers, etc., and this enables them to reside in same area and make one community by themselves. Furthermore, the Government of Japan extended sufficient financial support for the settlement of emigrants and provided them with cooperative training in advance, which was very helpful for them to engage in agriculture continuously. The Japanese emigration contributed to the agricultural development of Brazil through the introduction of new crop to Brazil and development of breeding of new varieties in farming as well. These were the main factors to the success of Japanese emigration and acquirement of confidence from the government of Brazil. On the contrary, the agricultural emigration program supported by the Korean Government during 1960's and 1970's failed to get confidence from the Government of Brazil for the lack of those considerate mea sures like Japan, thus the agricultural emigrants preferred non agricultural activities afterwards to engaging in agriculture. However, we need to note that the countries which have lots of virgin soil are still waiting for foreign immigrants and emigration program in every country starts from agriculture in developing stage. The United States put emphasis on agricultural sector when they began to accept immigration in nineteenth and early twentieth centuries, while Australia remains as one of the countries offering to accept agricultural immigration. Most of African counties are trying to develope agricultural sector asking for more foreign aids from developed countries. In Korea, whose agricultural technology is at advanced level and the development of agriculture is confronted with difficulties, we will have to ruminate of the experiences and lessons of other countries when we consider the agricultural emigration to foreign countries.

공압형 인공근육의 동적특성 분석

서기원,엄태준 순천향대학교 부설 산업기술연구소 2014 순천향 산업기술연구소논문집 Vol.20 No.1

This paper presents analysis of the dynamic characteristics of pneumatic artificial muscle(PAM) that has an elastic bladder with braided cover and was developed by Mckibben. The characteristics for design parameters such as material and dimension has been compared. Experimental results of the relationship between the pneumatic pressure and force by PAM were obtained. Frequency responses due to the pressure change were also obtained by experiments. System identification was applied to obtain the transfer function by using conjugate gradient method with least square error. The optimized transfer function could be used to predict and control the pneumatic system that implements the PAM. Also, the results could help design of PAM regarding material and length.

지구 평균 질량 변화를 포함한 GRACE 중력 모델 보정

서기원,엄주영,권병두 한국지구과학회 2014 한국지구과학회지 Vol.35 No.7

The Gravity Recovery and Climate Experiment (GRACE) has observed the Earth’s mass redistribution mainly caused by the variations of groundwater, ice sheet, and sea level since its launch in April 2002. The global gravity model estimated by the GRACE observation is corrected by barometric pressure, and thus represents the change of Earth masson the Earth’s surface and below Earth’s surface excluding air mass. However, the total air mass varies due to the water exchange between the Earth’s surface and the atmosphere. As a result, the nominal GRACE gravity model should include the Earth’s gravity spectrum associated with the total air mass variations, degree 0 and order 0 coefficients of spherical harmonics (C00). Because the water vapor content varies mainly on a seasonal time scale, a change of C00 (δ C00) is particularly important to seasonal variations of sea level, and mass balance between northern and southern hemisphere. This result implies that δ C00 coefficients should be accounted for the examination of continental scale mass change possibly associated with the climate variations. GRACE는 2002년 발사된 이래로 지하수, 빙하, 해수면의 변동에 의한 지구의 질량 재배치를 관측해오고 있다. GRACE 관측으로부터 추정된 지구 중력 모델은 기압보정을 거쳐 대기 질량이 제거된 지구 표면과 그 하부의 질량 변화를 나타낸다. 그러나 대기 총 질량은 지표면과 대기 사이의 물 교환에 의해 변한다. 그 결과 GRACE 중력 모델은 구면 조화 함수의 계수 degree 0, order 0 (C00)에 해당하는 총 대기 질량 변화에 관련된 중력 스펙트럼을 가져야 한다. 주로 계절적인 시간 척도 안에서 변하는 수증기 때문에 C00의 변화(δ C00)는 특히 해수면의 계절적 변동과 북반구와 남반구 사이의 질량 균형에 매우 중요하다. 이 결과는 δ C00가 기후변동과 관련된 대륙 규모의 질량 변화 연구에 꼭 고려되어야 함을 뜻한다.