춘천시 봉의산근린공원의 식생관리방안을 위한 식물군집구조 특성 연구

이은석,한봉호,김종엽,이학기,Lee, Eun-Seok,Han, Bong-Ho,Kim Jong Yup,Lee, Hak-Gi 한국조경학회 2024 한국조경학회지 Vol.52 No.1

This study suggests management planning of Bonguisan Neighborhood Park located on the central of Chuncheon city and highly used for citizen's rest and leisure space utilizing its vegetation structure feature. Bonguisan has been the central of the chuncheon since the period of the Three states in Korean history and consistently damaged, especially in present era, an isolation and sererance of its ecosystem has deepen for indiscreet urban development. The percentage of actual vegetation of Boinguisan Neighborhood Park is as follows: Quercus mongolica is 28.5%, Quercus mongolica - Quercus serrata is 2.1%, Pinus densiflora is 15.6%, Pinus densiflora - Quercus mongolica is 15.9%, Betula schmidtii is 1.6%, Robinia pseudoacacia is 5.9%, Pinus koraiensis is 1.6%. Quercus mongolica is distributed on the southwest, northwest, southeast side of region, Pinus densiflora is distributed on the ridge of east and southeast side of region, Betula schmidtii is distributed on the valley of northeast side region and steep slope region which is on the north side of chungwonsa temple. Pinus densiflora community (Comm. I) and Quercus acutissima - Robinia pseudoacacia community (Comm. V) is expected to undergo succession since it's categorized as Quercus spp. and Quercus mongolica community (Comm. II) and Quercus serrata-Quercus mongolica community (Comm. III), Betula schmidtii community (Comm. IV), Pinus koraiensis community (Comm. VI) is expected to maintain. Also for target vegetation and management planning, Vegetation of Bonguisan Neighborhood Park is classified as 1st Natural landscape conservation and improvement type, 2nd Ecological succession type, 3rd Unusual community conservation type, and 4th Recreation and experience type. And we suggested ecological management measure about each management types. For efficient management of Bonguisan Neighborhood Park, it is need to unify management system of it and after designating Pinus densiflora community and Betula schmidtii community which has high ecological preservation value as an ecological landscape protected area and manage it.

국내 주제도를 이용한 VITD 생성방안연구 : 군 지형분석지도를 중심으로

이은석,김종배,Lee, Eun-Seok,Kim, Jong-Bae 한국정보통신학회 2014 한국정보통신학회논문지 Vol.18 No.9

There were a lot of attempts in the army to use various domestic thematic maps, but attribute data types of military topographic analysis maps use the FACC of DIGEST, so there is a limit in employing domestic thematic maps with different types of attribute codes. Therefore, this study analyzed the FACC as a data attribute based on the MIL-PRF-89040 of the US Army. Then, VITD was created by changing the attribute codes of domestic thematic maps produced in Korea to fit the FACC. Lastly, it was applied to the analysis of cross-country movement for maneuver defined in FM 5-33 in order to verify if it is applicable in practice. As a result, it was found that the suggested method was helpful in securing the cross-country movement for maneuver. This means that this method can be used not only in producing military topographic analysis maps using domestic thematic maps but in constructing emergency transport routes roads to transport by-products of forest in future.

경주 남산 이조리귀부에 관한 고찰

이은석,조현경,Lee, Eun Seok,Cho, Hyun Kyung 국립문화재연구소 2010 헤리티지:역사와 과학 Vol.43 No.4

The tortoise pedestal for the memorial monument of Choe Jin-rip(an army officer in the mid-Joseon Period) in Ijo-ri, Naenam-myeon, Gyeongju is known to have been made in 1740. As such, it was originally understood to be a Joseon imitation of a tortoise pedestal made in the Unified Silla Period. The style of the Ijori Tortoise Pedestal differs from other tortoise pedestals dating back to the same period, and bears no resemblance to the Unified Silla pedestals of which it is a copy. Mullu ilgi, a record of the production of the pedestal, explains that the monument was made before the pedestal. Traces show that the two sides of the bottom of the monument were cut off so that it would fit into the smaller space made on the pedestal. It is scarcely conceivable that they made the pedestal and the platform without considering the bottom size of the monument. The record only states that the monument was made at a temple site named Baegundae, without explaining the details of the production process. This leaves some doubt as to whether its production was undertaken systematically. The cloud patterns engraved on this pedestal look similar to the temporal seriation found on the Tortoise Pedestal of the Royal Tomb of King Muyeol and the Seoangni Tortoise Pedestal of Gyeongju. The lotus pattern decorating the square pedestal on the back of the tortoise is one of a number of patterns that were widely used on roof-tiles in the 8th century, the heyday of the Unified Silla Kingdom. The Ijori Tortoise Pedestal, which represents a tortoise moving forward, displays a liveliness the like of which is rarely found in its cousins remaining in Gyeongju. The layout of the patterns in a queue on the tortoise-shell looks much better schematized than those made at an earlier date. It also looks like a more developed form, with the use of space taken into account. Such factors as the style of the patterns, the incongruity between the monument and its pedestal, and what is stated in the historical record indicate that the Ijori Tortoise Pedestal of Gyeongju was made in the mid-8th century(i.e. during the Unified Silla Period), rather than in the Joseon Period(i.e. the 18th century), as an imitation of earlier ones, including changes in the style unique to the Silla Period.

(Sr,M)FeO_3-y계(M=Ca)의 화학적 성질과 열분석에 대한 연구

이은석,Lee, Eun-Seok 한국공업화학회 1997 공업화학 Vol.8 No.6

The solid solutions of the $Sr_{1-X}M_XFeO_{3-y}$ (x=0.1, 0.2, 0.3, 0.4, 0.5, M=Ca) system having perovskite structures were prepared in air by heat treatment at 1473 K for 18hr. X-ray diffraction assigns cubic system for all the samples and shows that the lattice volume of each system decreases with increasing x value until x=0.3, but increases abruptly from x=0.4. The mole fractions of $Fe^{4+}$ ion($\tau$ value), the amounts of oxygen vacancy (y value) and finally nonstoichiometric chemical formulas for each composition were determined from Mohr salt analysis. TG/DTA thermal analysis (temperature range: 300~1173K) exhibits that 3-y values of the samples having x=0.1 and 0.2, decrease with temperature and increase almost reversibly with decreasing temperature. The samples of $x{\geq}0.3$, however, didn't show the reversible weight change and the 3-y values of them were nearly 2.5 in cooling process. Conductivities of each sample were varied within the semiconductivity range at relatively low temperature. And the conductivity at constant temperature decreases steadily with x value. The conduction mechanism of this ferrite system may be proposed as a hopping model of conducting electrons between the mixed valence states. At high temperature semiconductivity of each sample changed into metallic property.

스트론티움을 포함하는 페롭스카이트형 페라이트의 화학적 , 물리적 성질에 관한 연구

이은석,여철현 ( Eun Seok Lee,Chul Hyun Yo ) 한국공업화학회 1993 공업화학 Vol.4 No.2

At 1473 K under atmospheric pressure, the homogeneous samples of the Sm_(1-x)Sr_xFe^(3+)_(1-t)Fe^(4+)_tO_(3-y) (0.00 ≤x≤1.00) ferrite system were prepared. With the increase in x value, the amount of Fe^(4+) ion increased and the crystallographic structure was changed from orthorhombic symmetry to cubic symmetry. The electrical conductivity at constant temperature sharply increases and the activation energy decreases with the increase of Fe^(4+) ion, Mo¨ssbauer spectrum of the sample x=0.00 shows six-line pattern indicating the presence of Fe^(3+) ion in the octahedral sites.

다중에이저트 기반의 지능형 전자상거래 시스템

이은석,이진구,Lee, Eun-Seok,Lee, Jin-Goo 한국정보처리학회 2001 정보처리학회논문지 C : 정보통신,정보보안 Vol.8 No.6

인터넷상에서의 전자상거래의 중용성과 복잡성이 증가함에 따라 상거래과정을 통해 소비바와 공급자 양쪽을 다 효율적으로 지원할수 있는 지능형 소프트웨어 에이전트에 대한 관심과 요구가 급속도가 늘어나고 있다. 이러한 에이전트를 기반으로 한 지능형 전자상거래를 실현하기 위해서는 상품정보의 표준적 온토로지의확립. 메시지 교환 및 교섭을 위한 포로토콜의 정의와 중계기술의 기반기술을 바탕으로 다 중에이전트기반의 전자상거래시스템이 필요하다. 본 논문에서는 에이전트 기반의 전자상거래를 위한 개방형 기반구조의 하나로 지능형 전자상거래시스템,. ICOMA를 제안한다. 구체적으로 6종류의 에이전트기반의 전자상거래시스템의 구보와 에이전트간 상호교섭 및 상호 통신을 위한 포로토콜, 개인적응형 상품검색 및 필터링 기능을 제안, 설계, 구현하였고, 실험을 통해 그 유효성을 확인하였다. With the increasing importance and complexity of EC (Electronic Commerce) across the Internet, the need and expectation for intelligent software agents to support both consumers and suppliers through the whole process of EC are growing rapidly. To realize the intelligent EC. a multiagent based EC system. which includes foundational technologies such as the establishment of standard product ontology the definition of message and negotiation protocol and brockering, is required. In this paper we propose an intelligent EC System named ICOMA(Intelligent electronic CO mmerce system based on Multi-Agent) as an open infrastructure of multiagent-based EC. Concretely we have proposed. designed and implemented an architecture of multiagent-based EC system including 6-types of agents message protocol for inter-agent negotiation, personalized produst retrieval and filtering., We have confirmed the effectiveness of the system through experiments.

도전성 고무의 충전제로 이용 가능한 Dy2 - xSr1+xFe2O7 - y 페라이트계의 전기적 특성에 대한 연구

이은석,최세영 ( Eun Seok Lee,Sei Young Choi ) 한국고무학회 1993 엘라스토머 및 콤포지트 Vol.28 No.2

To make new filler for conducting rubber, the sample of perovskite-related ferrite system Dy₂ _xSr_(1+x)Fe₂O_(7 y) (x=0.0, 0.5, 1.0, 1.5, and 2.0) were synthesized at 1473 K in air. Mo¨ssbauer spetrum of x=0.0 sample shows typical six line pattern with Mo¨ssbauer parameters, I.S.=3.6×10^(-1)㎜/sec, E_Q=-7.0×10^(-2)㎜/sec, H_(int)= 5.19×10² KOe. In case of x=2.0, the spectrum is composed of single line exhibiting coexistence of Fe^(3+)(I.S.=3.7×10^(-1)㎜/sec) ions and Fe^(4+)(I.S.=-1.9×10^(-1)㎜/sec) ions. With increase in x value electrical conductivity at constant temperature sharply increased and the activation energies decreased from 3.8×10^(-1) to 1.9×10^(-1) eV.

단지 개발로 인한 우수 유출량 변화 예측 및 저감방안에 관한 연구 - 서울 은평뉴타운 13, 14단지(못자리골)를 중심으로 -

성종상,이은석,김대희,Sung, Jong-Sang,Lee, Eun-Seok,Kim, Dae-Hee 한국조경학회 2006 한국조경학회지 Vol.34 No.4

This study focuses on hydrological changes caused by developments in the 13th, 14th (Motjarigol) district in Eun Pyoung New Town, Seoul on the basis of the Land Use Planning of development plan. Through analyses from the hydrological experiments about rainfall outflow using universal equation and amounts of infiltration through soils, the changes in amounts of overflows were estimated and the results were discussed from a urban ecological point of view. As a result, it has been predicted that the amount of rainfall outflow at post-development was dramatically increased, compared to pre-development. Installing of Derbris Dams and infiltration facilities were suggested as alternative plan to meditigate these changes. If we apply these alternatives, the rainfall outflow would be reduced up to 30% compared to the development plan without BMPs (Best Management Practice). In conclusion, it is proposed that once the ecological principles were considered during development planning process, we can minimize the adverse effects of developments to our environments.

판상형 아파트의 기둥 경간에 따른 경제성과 미래지향적 공동주택의 방향성에 대한 연구

이은석(Lee, Eun Seok),최형훈(Choi, Hyung Hoon),박채연(Park, Chae Yeon),하상수(Ha, Sang Su) 한국콘크리트학회 2021 한국콘크리트학회 학술대회 논문집 Vol.33 No.1

Semantic Hypernetwork 학습에 의한 자연언어 텍스트의 의미 구분

이은석(Eun Seok Lee),김준식(Joon Shik Kim),신원진(Won-Jin Shin),박찬훈(Chan-Hoon Park),장병탁(Byoung-Tak Zhang) 한국정보과학회 2008 한국정보과학회 학술발표논문집 Vol.35 No.1

어떤 자연언어 문서가 전달하려는 의미는 그 텍스트의 성격에 따라 아주 명확할 수도(예: 뉴스 문서), 아주 불분명할 수도 있다(예: 시). 이 연구는 이러한 ‘의미의 명확성(semantic transparency)’을 정량적으로 측정할 수 있다고 가정하고, 이 의미의 명확성을 판단하는 데에 단어들의 연쇄(word association)의 확률통계적 성질들이 어떻게 기능하는지에 대해 논한다. 이를 위해 특정 단어가 연쇄체를 형성하면서 발생하는 neighboring frequency와 degeneracy를 중심으로 Markov chain Monte Carlo scheme을 적용하여 의미망('Semantic Hypernetwork')으로 학습시킨 후 문서의 구성 단어들과 그 집합들 간의 연결 상태를 파악하였다. 우리는 의미적으로 그 표상이 분명하게 나뉘는 문서들(뉴스와 시)을 대상으로 이 모델이 어떻게 이들의 의미적 명확성을 분류하는지 분석하였다. Neighboring frequency와 degeneracy, 이 두 속성이 언어구조에서의 의미망 기억과 학습 탐색 기제에 유의한 기질로서 제안될 수 있다. 본 연구의 주요 결과로 1) 텍스트의 의미론적 투명성을 구별하는 통계적 증거와, 2) 문서의 의미구조에 대한 새로운 기질 발견, 3) 기존의 문서의 카테고리 별 분류와는 다른 방식의 분류 방식 제안을 들 수 있다.