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국립부여박물관 소장 고려시대 동종의 과학적 분석과 보존
이선명,남궁승,김연미,김종오 국립중앙박물관 2009 박물관보존과학 Vol.10 No.-
국립부여박물관 소장 고려시대 범종은 일부가 결실된 상태이며, 표면은 부식물과 매장당시 고착된 흙, 먼지 등으로 곳곳이 오염된 상태이다. 동종의 분석 결과, 주요 성분으로 Cu 74.18%, Sn 9.58%, Pb 15.77%가 검출되었고 기타 미량성분으로 As, Fe, Sb, Bi, Ag가 확인되었다. 동종의 미세조직은 α상 기지에 부분적으로 흰색(α+δ)공석상이 관찰되고 곳곳에서 회색 개재물(S)과 검은색 개재물(Pb 편석)이 분포하였다. 동종의 안정적 보존을 위하여 보존처리를 실시하였다. A part of the bronze bell from Goryeo (918-1392) in the collection of Buyeo National Museum was missing, and it was noted to retain corrosion products and burial accretions. Chemical analysis showed that the chemical composition of the bronze bell is Cu (74.18%), Sn (9.58%), Pb (15.77%), and very small amounts of As, Fe, Sb, Bi, and Ag. It was noted that the microstructure of the bronze bell was mainly made up of α phase and α+δ eutectoid phase, and gray (S) and black (Pb segregation) prevailed. Conservation treatment has been done for the preservation of this bronze bell.
A Process-Driven Variability Analysis in Process-Aware Information Systems Family
Jihyun Lee,Sunmyung Hwang 보안공학연구지원센터 2016 International Journal of Software Engineering and Vol.10 No.5
Processes help an organization’s workforce achieve business objectives by helping them work not harder, but more efficiently and with improved consistency. Process-aware information systems (PAIS), whose implementation relies on the process specification, should be customizable in accordance with the process variations. Processes can be causes of variability, a characteristic that distinguishes one PAIS from others. The order or combination of processes can vary in dealing with the requirements and technical differences. Software product line engineering can help develop customizable or configurable PAISs, called PAIS family because it supports designing and developing a family of systems, not a single system. For designing PAIS family, analyzing variations in processes is more advantageous than analyzing the functional features of PAIS. Processes have different abstraction levels and sometimes they are not sequential. Moreover, a number of processes are too large and complex to analyze process variations as a whole. This paper proposes a hierarchical process framework-based process variability analysis technique for PAIS family. This paper explains the proposed technique through the FTA origin determination and management system example.
Jongseo Park,Sunmyung Lee 한국문화재보존과학회 2019 보존과학회지 Vol.35 No.4
In the process of the conservation treatment of the glass eyes of the stone standing Maitreya of Daejosa temple, Buyeo (Treasure No. 217), a blackish material, expected to be the adhesive for fixing the glass eyes, was collected and analyzed. Infrared spectroscopy and pyrolysis/gas chromatography/mass spectrometry (pyrolysis/GC/MS) were employed to identify the organic material in the sample. The IR analysis revealed the presence of materials such as apatite or bone black. The pyrogram of the sample was similar to that of Asian lacquer, among traditional adhesives. In particular, the pyrolysis/GC/MS analysis with online methylation detected 1,2-dimethoxy-3-pentadecylbenzene, methyl 7-(2,3- dimethoxyphenyl) heptanoate, and methyl 8-(2,3-dimethoxyphenyl)octanoate. These are known to be the pyrolysis products of catechol and its oxidation product, which indicated the presence of Asian lacquer in the sample. X-ray diffraction, X-ray fluorescence, and thermal gravimetry analysis showed that the sample contained ca. 60% inorganic substances, including apatite. Radiocarbon dating of the sample suggested that the blackish material was applied between the late 13th and early 15th century, revealing some discrepancy with the art–historical manufacturing time of the Maitreya. From the above analysis, it was concluded that Asian lacquer and bone ash were used to attach the glass eyes by forming a thick blackish lacquer layer.
Applying the SPLE to Develop Smart Home Resource Management Systems
Jihyun Lee,Sunmyung Hwang 보안공학연구지원센터 2015 International Journal of Smart Home Vol.9 No.7
The software product line (SPL) is an approach that develops a family of similar software by maximizing the reusability of development artifacts. The home resource management system in the smart home system is a core module of the home network middleware system. It manages all of the devices and services installed in the smart home system, i.e., installed devices, their installed location, their status (on/off), and related services. The basic functions of the home resource management system are similar no matter which kinds of homes they are installed in, but the detailed configurations of the location, device types, and services, including service combinations, differ from each other. Therefore, developers should focus on modifying the APIs and resource managers whenever a new kind of house needs to be serviced. To reduce these efforts, the demand for product line architecture (PLA) commonly used among different kinds of smart resource management systems has been raised and this paper describes the design results.
이지현(Jihyun Lee),황선명(Sunmyung Hwang) 한국산업정보학회 2014 한국산업정보학회논문지 Vol.19 No.6
지금까지 자크만 프레임워크를 포함하여 국방 분야의 DoDAF, 행정 분야의 FEAF, TEAF, 산업 분야의 TOGAF 등 다양한 엔터프라이즈 아키텍처 프레임워크(EAF)가 제안되어 왔다. 이들 EAF는 각 도메인을 지원하기 위한 EA 관점을 정의하고, 관점 별로 모델 및 계층을 제시하고 있다. 또한 이들 EAF는 계층 별 모델들 간 일관되게 연결되어 있으며 타 프레임워크의 모델과 연계할 수 있다는 장점을 가지고 있다. 그렇지만 이들은 너무 많은 계층을 포함하고 있어 복잡도가 높거나, 명확한 아키텍처 기술을 위한 모델을 제시하고 있기 않다. 특히, 기업의 궁극적 지향인 비즈니스 가치를 고려하고 있지 않고, 이를 달성하기 위한 비즈니스 프로세스와의 실천적 연결이 부족하다. 따라서 본 연구에서는 비즈니스 도메인의 특수성을 반영하여 비즈니스 가치 달성에 중요한 비즈니스 프로세스와의 실천적 연결을 고려한 가치기반 엔터프라이즈 아키텍처 프레임워크를 제안한다. Until now there have been many kinds of enterprise architecture frameworks including the DoDAF in defense domain, the FEAF in administration domain, and the TEAF in finance domain. These EAFs define EA viewpoints for supporting each domain and propose perspectives and models for each viewpoint. These EAFs provide consistent models from different perspectives that interact with each other. However, they have too many perspectives so that their complexities are too high, or they do not define enough models for concrete architecture description. Especially, they neither consider business values, that mean the ultimate purpose of an organization nor execute processes for achieving the business values. This paper thus proposes the VBEAF, business value based enterprise architecture framework that considers and executes business values in organizational business processes.