http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 이병곤 (검색결과 227 건)
- 무료
- 기관 내 무료
- 유료
-
地形測量과 Contour 設定에 關한 硏究 : 慶北大學校 敷地測量의 例 An example at the KNU site surverying
李炳坤,金又寬 慶北大學校 1968 論文集 Vol.12 No.-
In the synthetic research of area, scientific correctness of maps is highly required. In the establishment of land development planning, especially in the grasp of a vast area scale, it is Possible to perform by using the various topographic maps Published already, but it is difficult to plan the land use and to understand the geographical features without Micro-topo graphical maps. The purpose of this research is in making a Micro-topographic map established one contour line at five meters intervals, for the KNU site is small in tis area scale and so hilly in its ladform. We can make the map in a shortest time by using Air Photo, but it is not used for small area scale due to the defects of falling into errors without the advanced countries usually using it because of the time saving. While the plane table surveying can be advantageously used in small area scale than in vast one in respect that we can directly approach the land. Taking account of this point, the result gained by the plane table surveying and the level surveying in KNU site are as follows; 1. Established a sea level point 43.595 meters of this KNU site at rotary. 2. Discovered many errors committed by photo surveying (Aerial Surveying) in topographic map published already. 3. The highest spot is 60 meters and lowest spot 30 meters in this KNU site, in consequence, the local relief is 34 meters. 4. The level of road and of building base floor coincides with the network of the topographic survey forming the backbone of land surface, due to its hilly topography. 5. For making the scientific photo map, it must be supplemented with the Precise plan table surveying. In the respect of above, fostering an able engineer is urgent and if we take the fortes of the photo surveying and the plane table surveying, we can cultivate a new phase to make the descrable maps, and they will be much wore available to perform the land use planning and land development as a base map.
-
-
-
-
전기요금 저감을 위한 고속철도 변전소 에너지저장장치 용량산정 프로그램 개발
이병곤,창상훈 한국철도학회 2021 한국철도학회논문집 Vol.24 No.4
본 논문에서는 고속철도 변전소의 전기요금 절감을 위한 에너지저장장치(Energy Storage System, ESS)의 최적 용량 산정 기법을 제시하고 이를 기반으로 개발한 전기요금 저감을 위한 고속철도 변전소용 ESS 최적 용량 산정 프로그램을 소개한다. 실제적인 전기요금 절감효과를 고려하기 위해 최대부하(kW)에 의해 산정되는 기본요금과 시간대별 전력사용량(kWh)에 의해 산정되는 전력량요금을 모두 반영한 ESS의 최적 충/방전 스케줄링 문제를 최적화 문제로 정식화하였으며, 범용 프로그램을 사용하여 빠르게 최적 스케줄을 도출하기 위해 도출한 최적화 문제를 선형최적화 문제로 완화하는 방법을 제시하였다. 다음으로 제시한 기법을 이용하여 투자효율을 최대화하는 ESS 용량을 산정하는 기법을 제시하였다. 제시한 기법은 2단계로 구성되어 있으며, 1단계에서는 개략적인 ESS 데이터를 이용하여 ESS 제조업체에 상세 스펙을 요청할 ESS 용량 후보군을 생성한다. 2단계에서는 제조업체에서 제공한 상세 정보를 이용하여 최적의ESS 용량을 산정한다.
-
이병곤,장림,오근엽 한국동북아경제학회 2016 동북아경제연구 Vol.28 No.3
This study deals with leaf tobacco which is purchased by cigarette manufacturers in domestic and international market to produce tobacco products. Leaf tobacco is one of the main agricultural import items in Korea. First, we analyse the domestic and international market of tobacco product and leaf tobacco and show that there has been gradually increasing trend of consumption and production in the world. We also found that the import of leaf tobacco had been increasing in Korea because of the reduction in domestic production. Next, this paper analyzes the various explanatory variables determining the volume of leaf tobacco import, using the gravity model. Production share of the countries in the world, distance between Korea and exporting countries, tariff rate, and FTA (dummy variable) are included in the panel regression for the data from 2000 to 2013. According to our results, it seems that the FTA and tariff rate have the significant effects on Korea’s leaf tobacco import in addition to the facts that exporting countries’ production share and import unit price have significantly positive relationship with import. But this effects look relatively small in the case of high quality leaf tobacco.
-
-
-
-
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
