Bi₂Te₃계 열전박막의 열전 출력인자에 미치는 첨가제의 영향

배상현,최순목,Bae, Sang Hyun,Choi, Soon-Mok 한국전기전자재료학회 2020 전기전자재료학회논문지 Vol.33 No.2

Thermoelectric Bi₂Te₃ thin films were synthesized by a co-sputtering method at 300℃. A Fe dopant was considered to enhance the thermoelectric properties of the system. The Seebeck coefficient of the Fe-doped films increased whereas the electrical conductivity decreased. As a result, the power factor of the system increased owing to the enhanced Seebeck coefficient. Grain growth inhibition was detected in the Fe-doped system, which produced more grain boundaries in the Fe-doped films than in the undoped system. The increased grain boundary scattering was deemed to be effective for a reduced thermal conductivity. This is advantageous for the preparation of high-performance thermoelectric films.

CASE 자료 형식으로부터 CDIF 형식으로 변환하는 프로그램 자동 생성기의 구현

배상현,남영광,신규상,Bae, Sang-Hyun,Nam, Young-Kwang,Shin, Gyu-Sang 한국정보처리학회 2000 정보처리논문지 Vol.7 No.12

미국의 전자산업협회(Electronic Industries Association)에서는 1991년부터 CASE 도구간의 정보교환을 용이하게 하기 위하여 CDIF (CASE Data Interchange Format) 이라는 표준 형식을 제정해 오고 있다. 각 CASE 도구에서 사용된 데이터를 CDIF 형식으로 변환만 해주면 다른 CASE 도구에서 이를 자신에 맞는 형식으로 변환하여 사용할 수 있다. 이때 각 CASE 도구 공급자는 CDIF 형식으로 변환 혹은 CDIF 형식을 자신에 적합한 형식으로 변환하는 프로그램을 작성하여야 한다. 본 논문에서는 이러한 불편을 해소하기 위해서 CASE 도구 공급자가 각 CASE 도구에서 사용된 자료의 저장형식을 지정하여 주면 CDIF 형식을 지원하는 변환기의 소스코드를 자동으로 생성하는 생성기를 개발하였다. 이 자동 생성기는 CASE 도구에서 사용된 자료의 저장형식, 저장형식에 대한 메타정보, CDIF 메타정보를 입력받아서 CDIF 문장을 생성한다. 본 연구에서 개발한 자동 생성기는 정보저장소에 관계없이 단일화된 인터페이스를 제공하는 JDBC 및 Oracle과 Sun O/S 환경하에서 구현하였다. Electronic Industries Association has set a standard format called CDIF(CASE Data Interchange Format) for exchanging information between CASE tools from 1991. If data used on a CASE tool is represented in CDIF format, then any other CASE tools can use the data by translating CDlF format into their own format. In order to do so, each CASE vendor must provide a translator program from CDIF to its own data format or from its own data to CDIF format. In this thesis, we have implemented a source code generator for translating CASE data format into CDIF format only if they provide how data is stored. This automatic program generator generates CDIF statements using data format used in CASE tools, meta information about stored data and CDIF meta information. In the thesis, the automatic program generator has been implemented with Java and Oracle DBMS with JOBC interface in Sun O/S environment.

FPGA Implementation of VME System Controller

배상현,이강현,Bae, Sang-Hyun,Lee, Kang-Hyeon Korea Information Processing Society 1997 정보처리논문지 Vol.4 No.11

For FA (factory automation) and ATE (automatic test equipment) in the industrial area, the standard bus needs to increase the system performance of multiprocessor environment. VME(versa module european package format) bus is appropriated to the standard bus but has features of small package and low board density. Beside, the density of board and semiconductor have grown to become significant issues that affect development time, project cost and field diagnostics. To fit this trend, in this paper, we composed Revision C.1 (IEEE std. P1014-1987) of the integrated environment for the main function such as arbitration, interrupt and interface between, VMEbus and several control modules Also the designed, VME system controller is implemented on FPGA that can be located even into slot 1. The control and function modules are coded with VHDL mid-fixed description method and then those operations are verified by simulation. As a result of experiment, we confirmed the most important that is the operation of Bus timer about Bus error signal should occur within <TE>$56{\mu}m$, and both control and function modules have the reciprocal operation correctly. Thus, the constructed VHDL library will be able to apply the system based VMEbus and ASIC design. 산업분야의 공장자동화와 자동 측정장비의 다중 프로세서 환경의 시스템 성능을 향상시키는 표준버스가 필요하다. VME 버스는 이러한 명세에 적합하지만, 소규모 패키지와 보드의 낮은 집적성 사양을 가지고 있다. 더욱이 보드와 반도체 집적성은 개발시간, 연구비용, 현장진단에 영향을 주는 중요한 문제로 대두되어 있다. 이러한 추세에 맞추어, 본 논문에서는 VME 버스와 제어기 모듈 사이의 주기능인 중재, 인터럽트, 인터페이스를 Revision C.1(IEEE std. P1014-1987)의 통합환경으로 구성하고, 설계된 VME 시스템 제어기를 Slot 1에 장착할 수 있도록 FPGA 상에 구현한다. 제어 및 기능 모듈의 동작은 VHDL의 mid-fixed 방식으로 코딩을 하고 검증하였다. 실험을 통하여 VME 시스템 제어기의 가장 중요한 동작인 버스 타이머의 버스 에러 신호가 $56{\mu}m$ 이내에 발생된 것과, 제어모듈과 기능모듈의 정확한 상호 동작도 확인하였다. 그러므로 구축된 VHDL 라이브러리는 VME 버스 기반시스템과 ASIC 설 계 에 응용할 수가 있다.

송광사 소장 고문서에 비친 고려 사원의 모습 -「수선사형지기(修禪社形止記)」를 중심으로-

배상현 ( Sang Hyun Bae ) 한국중세사학회 2004 한국중세사연구 Vol.0 No.17

This thesis, after examining Suseonsa-Hyeongjigi, one of the Goryeo-era writings collected by Songgwang Temple, and based upon it, makes an approach to the features of the late Goryeo Suseonsa. This Hyeongjigi is a general document showing the consistent conditions of Suseonsa in late Goryeo Dynasty. The purpose of this writing was to succeed to the Buddhist tradition following the great monk Bojo Jinul, to manage the temple, and to confirm and maintain financial foundations. The content of document; probably written between the 17th year of King Gojong`s reign and the 11th year of King Wonjong`s rule, bears important values as a historical material in understanding the relationships between state and temple as well as temple and community, economic aspects of temples, and enshrinement and preparation of Buddhist sanctums. We see, first of all, that Suseonsa attracted national attention under positive protection. As a result, majority of royal family and high government officials took part in its establishment, producing many great monks esteemed nationwide. The relationship between Suseonsa and its neighboring villages is shown in Goryeo documents. More than 7 provinces and Bugok regions belonged to this community including Seungpyeong. The fact that residents in the area were active supporters of the temple reflects the position of Suseonsa leading the Bibo temple in Juhyeon. Suseonsa, which boasted of its prestige similar to other state-founded temples, possessed considerable land, fundamental resources in economic activity in premodern Goryeo era We see in the documents that most of the land was managed through Bo system guaranteeing independent management as well as transparent maintenance of the temple`s finance. It is also found that Suseonsa enshrined Tripitaka. Such fact proves, considering other documents, that Suseonsa paid continuous attention to creating and maintaining Tripitaka.

眞鏡 審希의 활동과 鳳林山門

배상현(Bae. Sang-Hyun) 한국사학회 2004 史學硏究 Vol.- No.74

The period in which Jingyeong Simhui actively engaged himself marks an epoch when a new order was being established, breaking down the anden regime of Silla Dynasty, We can understand that Simhui's activities reflect many aspects of local society and temples, This thesis, in this respect, examines his major activities, dividing them into three stages,<br/> A descendent of royal family from Gaya Dynasty, Simhui couldn't expect any access to public offices because his clan was excluded from the ruling class of Silla Dynasty, After he became a Buddhist priest, he traversed various regions overflowing with anti-Sill a atmosphere. He experienced there not only the contradictions and restrictions of the late clays of Silla but the dynamic spirits of local societies as well,<br/> In the meantime, however, Simhui aroused Zen morale, trying to playa vital role in his society, Yet, his activities, never inclined to any doctrines, characterize him as 'a marginal being', This feature, in special, is vividly reflected, willie a chief priest at Bonglim Temple, in the education of his disciples, in his influence on lrx:al society, and in the relationship with the royalties.<br/> The tendency of Simhui's Zen ide-dS was very flexible, transcending both fonn and emptiness, He also took a finn stance neglecting neither the true nor the secular both of which he had come in contact with, In this sense we can judge that his activities were based on the reality recognition he had grasped, and this was not irrelevant to his activity cexle he pursued, It was widely recognized that, as Simhui's followers were called disciples of Bonglim or great monks of Bonglim, Jingyeong Simhui was the very one who set up the Bonglim ethos with its center at Bonglim Temple,<br/> The fact that Simhui had more than 500 disciples indicates how strong the influence of the temple was.<br/> economic aid of the temple came not only from the influential people of the local society but also from the royalties of Silla Dynasty. Such facts, we can conclude, reflect the range of Jingyeong Simhui's activities and the significance of Bonglim Temple as well as its morale.<br/>

CASE 자료 형식으로부터 CDIF 형식으로 변환하는 프로그램 자동 생성기의 구현

배상현(Sang Hyun Bae),남영광(Young Kwang Nam),신규상(Gyu Sang Shin) 한국정보처리학회 2000 정보처리학회논문지 Vol.7 No.12

Electronic Industries Association has set a standard format called CDIF(CASE Data Interchange Format) for exchanging information between CASE tools from 1991. If data used on a CASE tool is represented in CDIF format, then any other CASE tools can use the data by translating CDIF format into their own format. In order to do so, each CASE vendor must provide a translator program from CDIF to its own data format or from its own data to CDIF format. In this thesis, we have implemented a source code generator for translating CASE data format into CDIF format only if they provide how data is stored. This automatic program generator generates CDIF statements using data format used in CASE tools, meta information about stored data and CDIF meta information. In the thesis, the automatic program generator has been implemented with Java and Oracle DBMS with JDBC interface in Sun O/S environment.

신라 경덕왕대 불교 사원과 지방사회

裵象賢(Bae, Sang-Hyun) 신라사학회 2006 新羅史學報 Vol.- No.8

수급자 보호를 위한 부채연계투자전략:확정급여형(DB) 퇴직연금을 중심으로

배상현 ( Sang Hyun Bae ),정도영 ( Do Young Cheong ),성주호 ( Joo Ho Sung ) 한국보험학회 2016 保險學會誌 Vol.106 No.-

저금리 기조 정착화, 한국채택국제회계기준(K-IFRS) 도입에 따른 확정급여채무의 시가 평가 등으로 현재 확정급여형 퇴직연금 제도를 선택한 많은 기업들이 법정최소적립금에 미달하는 과소적립 상태에 있다. 이러한 환경적 요소를 고려할 때 확정급여형 퇴직연금을 운용하는 기업 입장에서는 확정급여채무 대비 사외적립자산 부족 위험인 하방리스크를 고려한 부채연계투자전략의 중요성이 더욱 부각되고 있다. 이에 본 연구는 국내 DB형 퇴직연금제도의 특성을 반영한 가상의 확정급여채무를 산출하고 이를 통해 하방리스크를 고려한 부채연계투자전략을 실증적으로 도출하였다. 분석 결과 위험회피도와 하방리스크 비용이 커질수록 부채매칭 중심의 투자를 하게 되어 주식투자비중이 작아지는 것으로 분석되었다. 하방리스크 비용이 낮을 경우 과소적립 상태의 기업은 적립비율의 제고를 위해 공격적인 투자전략을 선택하는 것으로 나타났다. 수급권 보호를 위해서는 적립금 부족분에 비례한 하방리스크 비용을 부여할 필요성이 있으며, 장기적으로는 영국의 PPF, 미국의 PBGC와 같은 보험제도의 도입에 대한 검토도 필요한 것으로 분석되었다. Many of DB pension plans in Korea haven’t met the funded ratio requirements due to the current low interest rate environment and the new accounting standards which require the fair valuation of pension liability. These new economic, accounting and regulatory changes have led to growing interests in a Liability-Driven Investment(LDI) strategy handling downside risk. We applied DB liability model to LDI framework that incorporates downside risk penalties for not meeting liabilities. The liability driven investment portfolio is decided in accordance with risk aversion, funded ratio and cost of downside risk. When the funded ratio and the cost of downside risk is low, the manager takes the investment risk to enhance the funded ratio. We suggested the introduction of downside risk penalty including insurance schemes to protect the employees’s benefit from insolvency.

3D 프린팅으로 제작한 SMP(형상기억폴리머)의 밀도와 형상 복원력의 상관관계에 관한 연구

배상현(Bae, Sang-hyun),최석원(Choi Seok-won),윤정원(Yoon, Jungwon) 대한건축학회 2018 대한건축학회 학술발표대회 논문집 Vol.38 No.2

This study is conducted to investigate the shape recovery behaviors of the 3D printed shape-memory-polymer foldings by adjusting their 3D printing infill densities, with a focus on the relationship between the shape recovery force and the infill density. The dedicated 3D printing software for a 3D printer used for manufacturing tested foldings was applied to implement various infill density parameters to produce foldings with differentiated infill densities. The shape recovery behaviors of SMP foldings were measured by using a installed kit, thus to analyze and identify the relationship between the 3D printing infill densities and the shape recovery behaviors. From this research, properties and applications of the SMP folding shape recovery behavior and considerations in designing with SMP for folding structures are discussed.

네트워크 상에서의 실시간 물류정보관리에 대한 설계

배상현(Sang-Hyun Bae),오창윤(Chang-Yun Oh),양성기(Sung-Ki Yang),최길환(Kil-Hoan Choi),이광옥(Kwang-Ok Lee) 조선대학교 지식경영연구원 1999 지역개발연구 Vol.3 No.-