지급자재 조달관리부담 평가에 기초한 중소기업 공사용자재 직접구매제도 대응방안: 공공아파트를 공급하는 발주자를 중심으로

송상훈,방종대,손정락,Song, Sang-Hoon,Bang, Jong-Dae,Sohn, Jeong-Rak 한국토지주택공사 토지주택연구원 2013 LHI journal of land, housing, and urban affairs Vol.4 No.4

중소기업청은 일정규모 이상의 공공건설사업에 대해 일반공사와 의무적으로 분리하여 직접 구매해야 하는 123개 공사용자재 제품군을 지정하고, 법에서 정한 바에 따라 발주기관이 자재를 직접 구매하여 수급인에게 공급하도록 하고 있다. 본 연구에서는 이러한 공사용자재 직접구매제도 하에서 공공아파트 건설 현장에 투입되는 지급자재가 지니는 다양한 특성과 관리요인을 발주자 입장에서 종합적으로 고려하여, 주요관리대상 자재를 파악하고, 자재 조달 프로세스를 기반으로 이들에 대한 적정 관리 방안을 제시하였다. 즉, 조달경로, 현장특화정도, 입주자 요구수준, 업체 책임범위, 납품분할정도, 현장작업 요구도, 부속자재 필요도, 검수조건 등 지급자재가 가지는 주요 관리요인을 적용하여 공공아파트 건설사업에 적용되는 43개 직접 구매 대상품목의 조달관리부담을 평가한 결과, 상대적으로 높은 조달관리노력이 요구되는 주요관리대상그룹에는 목재창호, 알루미늄창호, 승강기, 목재마루재, 레미콘, 타일, 합성수지창호가 포함되었고, 그 중 알루미늄창호와 타일은 집중관리대상으로 분류되었다. 나아가 직접구매제도의 영향에 따른 집중관리대상 자재에 대한 대응방안은 발주자 입장에서 실태, 문제점, 관리측면의 주요 고려사항을 반영하여 작성하였으며, 실질적 수량 산출, 명확한 발주세부조건 정비, 생산 전후 활동 활성화, 하자보수 물량 확보, 공종별 간섭 사전 협의 및 해소 등이 필수적인 관리활동으로 나타났다. The Small and Medium Business Administration specified 123 construction materials mandatory to purchase directly and forced the public owners to provide the contractors with materials as required by related law. This study extensively reviewed various characteristics and management factors of the owner-providing materials consumed in the public apartment housing under Direct Buying System(DBS) from the public owner's perspective. Subsequently, the major managed materials were identified, and the proper response plan was developed along the material procurement process. The Procurement Management Load Indices (PMLI) of 43 materials were evaluated according to rating criteria with procurement path, project-specified level, user requirement level, supplier's responsibility, on-site work requirement, additional parts, and inspection standards. The tile and aluminum windows were classified in the group needing high-level procurement efforts to reduce the errors and ensure the efficiency. The accurate quantity estimation method, definite purchase details, management activity definition before and after production, additional quantity for rework, interference coordination were defined as the essential activities for effectively responding to DBS.

개선된 고속 제곱 발생기 설계

송상훈,Song, Sang-Hoon 한국정보처리학회 2000 정보처리논문지 Vol.7 No.1

제곱 테이블을 이용한 곱셈 방법은 처리과정을 간단히 하고 속도도 향상시킨다. 그러나, 비트 길이가 증가함에 따라 테이블 크기는 지수 승으로 증가하게 된다. 최근에 Wey와 Shieh는 고속 곱셈이 요구되는 응용분야에 적합한 폴딩 기법을 이용한 우수한 제곱 발생기를 제안하였다. 이 기법은 ROM 주소에 대한 1의 보수 값을 이용하여 제곱 값을 위한 거대한 테이블을 계속 폴딩함으로써 필요한 테이블의 크기를 작게 만들어 ROM의 크기를 줄일 수 있도록 한다. 본 논문에서는 Wey와 Shieh의 기법에서 1의 보수 부분이 필요 없는 개선된 폴딩 기법을 제안한다. 그리고 제안된 방법은 중간 과정에서 필요한 부분 합의 비트 길이를 줄임으로써 하드웨어 구현을 쉽게 하고 성능을 더욱 향상시킨다. The square-based multiplication using look-up table simplifies the process and speeds-up the operating speed. However, the look-up table size increases exponentially as bit size increases. Recently, Wey and Shieh introduced a noble design of square generator circuit using a folding approach for high-speed performance applications. The design uses the ones complement values of ROM addresses to fold the huge look-up ROM table repeatedly such that a much smaller table can be sufficient to store the squares. We present new folding techniques that do not require a ones complement part, one of three major parts in the Wey and Shiehs method. Also the proposed techniques reduce the bit size of partial sums such that the hardware implementation be simplified and the performance be enhanced.

이동 에이전트 통신을 위한 효율적인 위치 추적 방법

송상훈,Song, Sang-Hoon 한국정보처리학회 2004 정보처리학회논문지 A Vol.11 No.5

이동 에이전트에 대한 위치 추적 기능은 네트워크에서 움직이는 개체에 메시지를 전달하기 위한 것이다. 대부분의 위치 추적 방법들은 이동 에이전트의 현재 위치 정보를 가지고 있는 릴레이 노드를 사용하여 메시지를 전달할 수 있게 한다. 본 논문은 도메인 기반의 프록시를 이용한 효율적인 위치 추적 방법을 제안한다. 이동 에이전트들이 이동 할 호스트를 무작위로 결정하지 않고 같은 도메인에 있는 호스트들을 먼저 방문하는 특징을 이용하여 위치 정보 등록 비용과 메시지 전달 비용을 최소화하는 것이다. 도메인 기반 프록시는 위치 정보 등록 비용을 줄이는데 효과적이지만, 프록시 체인의 길이가 길어지면 메시지 전달 비용을 높일 수 있는데 프록시 체인의 길이를 압축 시켜 메시지를 효율적으로 전달하는 방법을 제안한다. The provision of location tracking for mobile agents is designed to deliver a message to a moving object in a network. Most tracking methods exploit relay stations that hold location information to forward messages to a target mobile agent. In this paper, we propose an efficient location tracking method for mobile agents using the domain-based proxy as a relay station. Mobile agents can reduce the length of their migration paths by visiting hosts in the same domain first, rather than selecting hosts randomly. The proposed method exploits the domain-based moving patterns of mobile agents and minimizes registration and message delivery costs. Since the long proxy chain can contribute to the high message delivery cost, we also propose a compressing method to reduce the message delivery cost.

7상 BLDC 전동기 구동시스템 해석 및 설계

송상훈(Sang-Hoon Song),윤용호(Yong-Ho Yoon),이병국(Byoung-Kuk Lee),원충연(Chung-Yuen Won) 대한전기학회 2014 전기학회논문지 Vol.63 No.4

In this paper, a simulation model for 7-phase BLDC motor drives for an Autonomous Underwater Vehicles (AUV) is proposed. A 7-phase BLDC motor is designed and the electrical characteristics are analyzed using FEA program and the power electronics drives for the 7-phase BLDC motor are theoretically analyzed and the actual implementation has been accomplished using Matlab Simulink. PI controller is used for verifying the validity of the proposed model and the informative results are described in detail.

건설현장 공사관리 프로세스 개선방안

송상훈(Song Sang-Hoon),김우영(Kim Wooyoung),이현수(Lee Hyun-Soo) 대한건축학회 2003 大韓建築學會論文集 : 構造系 Vol.19 No.2

While facing the rapid changes in both domestic and foreign business environment, the construction companies have made various efforts to maintain and enhance the competitiveness such as reorganizing the business structures according to their core competences and modifying the marketing strategy. Information technologies(IT) have played a critical role in creating the efficient working conditions. But compared to the labors taken to the construction of IT-oriented systems, the detailed consideration to the process itself on which the information systems are implemented has been frequently overlooked. So the purpose of this study was to propose the process improvement alternative suitable to construction industry and the study was focused on three major management fields -time, cost, and material management processes- on construction site. For this purpose the basic theories for process improvement including reengineering were reviewed and IDEF methodology and process map were adopted as techniques to present the process model. The conclusions below were induced through this study. (1)This study classified the information from management processes on site systematically and drew major functions for process redesign by analyzing those information. (2)By tracing the causes of problems from the current processes, this study suggested more fundamental solutions to those problems through identifying the opportunities from IT and organizational changes. (3)Beyond the general process improvement methodology such as understanding redundancies in process, this study discussed detailed process including work types and work contents. (4)This study devised integration of processes and considered the interfaces of processes to reflect the interrelationships and influences among processes. (5)The redesigned processes could be expanded as the tools for continuous improvement and be utilized for development of construction management systems.

Die Betrachtung über die neue Regelung des Finanzausgleichssystems in vereinigtem Deutschland

Song, Sang-Hoon(송상훈) 동아대학교 독일학연구소 1998 獨逸學硏究 Vol.- No.14

천마(天麻)가 뇌실질출혈 흰쥐의 신경세포 자연사에 미치는 영향에 대한 면역조직화학적 연구

송상훈 ( Sang Hoon Song ),이준석 ( Joon Suk Lee ),신정원 ( Jung Won Shin ),김성준 ( Seong Joon Kim ),손낙원 ( Nak Won Sohn ) 한방재활의학과학회 2011 한방재활의학과학회지 Vol.21 No.4

Objectives: This study was carried out in order to examine the effects of Gastrodiae rhizoma(GR) ethanol extract on neuronal apoptosis in intracerebral hemorrhage(ICH)-induced rats. Methods: ICH was induced by the stereotaxic intrastriatal injection of bacterial collagenase type VII in Sprague-Dawley rats. GR was orally given once a day for 3 days after ICH. Histological changes of the peri-hematoma regions were observed by cresyl violet staining. Bcl-2-associated X protein(Bax), B-cell blastoma 2(Bcl-2) and terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling(TUNEL) expressions in the affected regions were performed by immunohistochemistry. Results: 1. GR reduced apoptotic bodies and swelling neurons in the peri-hematoma regions of ICH-induced rats. 2. GR significantly reduced TUNEL positive cells in the peri-hematoma regions of ICH-induced rats. 3. GR significantly reduced Bax positive cells in the peri-hematoma regions of ICH-induced rats. 4. GR did not influence Bcl-2 expression in the peri-hematoma regions of ICH-induced rats. Conclusions: These results suggest that GR has neuroprotective effects against ICH-induced apoptosis.

개선된 고속 제곱 발생기 설계

송상훈(Sang Hoon Song) 한국정보처리학회 2000 정보처리학회논문지 Vol.7 No.1

The square-based multiplication using look-up table simplifies the process and speeds-up the operating speed. However, the look-up table size increases exponentially as bit size increases. Recently, Wey and Shieh introduced a noble design of square generator circuit using a folding approach for high-speed performance applications. The design uses the ones complement values of ROM addresses to fold the huge look-up ROM table repeatedly such that a much smaller table can be sufficient to store the squares. We present new folding techniques that do not require a ones complement part, one of three major parts in the Wey and Shiehs method. Also the proposed techniques reduce the bit size of partial sums such that the hardware implementation be simplified and the performance be enhanced.

테스트 패턴 발생의 가속화를 위한 프로세서 파이프라인 구조

송상훈(Sang-Hoon Song) 한국정보과학회 1995 정보과학회논문지 Vol.22 No.4

본 논문은 테스트 패턴 발생 알고리즘을 가속화 할 수 있는 하나의 전용 컴퓨터 구조를 제안한다. 제안된 컴퓨터 구조는 테스트 패턴 발생시 나타나는 다중 경로에 대한 경로 병행성을 파이프라인 기술을 사용하여 중첩 처리한다. 이 구조는 한개의 제어 프로세서와 고속의 선입선출 메모리를 통하여 링 구조로 연결된 N 단의 파이프라인된 프로세서들로 구성된다. 회로 정보는 각 게이트의 위치에 따라 분할되어 각 프로세서 단에 분배된다. 시뮬레이션 결과에 의하면 6 단의 파이프라인으로 2.6 이상의 성능 향상을 얻을 수 있는 것을 보여준다. This paper presents a special purpose architecture that can speed up a test pattern generation (TPG) algorithm. The proposed architecture exploits path parallelism using a pipelining technique for the concurrency in multiple paths during test generation. The architecture consists of one control processor and N stages of pipelined processors that are connected through high speed FIFO memory in a ring structure. Circuit informaion is partitioned by the topological level of each gate and is distributed to each processor stage. Simulation results show a performance gain above 2.6 with 6 pipeline stages.

공공주택 건설사업에 대한 직할시공방식 적용이 건설산업에 미치는 예상효과와 추진방향 분석

송상훈(Song, Sang-Hoon),손정락(Sohn, Jeong-Rak),방종대(Bang, Jong-Dae),신동우(Shin, Dong-Woo),김기현(Kim, Ki-Hyun) 대한건축학회 2013 大韓建築學會論文集 : 構造系 Vol.29 No.10

The direct construction control method(DCCM) is based on the direct contract between owner and specialty contractors without involvement of a general contractor. The application of the DCCM, originally, aimed to cut down the public rental apartment price, and the introduction of DCCM to public construction has gained a plenty of attention from the construction sector as it causes major change in current production and profit structure. The purpose of this study was to suggest its application strategy to public construction projects based on the various opinions about DCCM collected from the survey targeting related stakeholders. The results of survey showed that the DCCM is expected to be relatively inefficient in project performance area. Despite its strength over the cost aspect, many respondents expect that it has a negative effect on the time, quality, safety, and environment performance. However, DCCM is considered to contribute to enhancing the competitiveness of constructors and reinforcing fair trading with transparency. As the preparation stage, the DCCM is suggested to be continuously applied mainly with the small-scale projects till the technical capability is ensured along with legal amendment.