국내 대형건설회사의 책임형 건설사업관리 역량분석

유승규,최석인,손창백,Yoo, Seung-Kyu,Choi, Seok-In,Son, Chang-Baek 한국건설관리학회 2009 한국건설관리학회 논문집 Vol.10 No.5

최근 국내의 건설회사는 건설경기 침체와 국제금융시장의 연이은 악재로 인해 많은 어려움을 호소하고 있어, 보다 더 세계화되고 국제 경쟁력을 갖춘 건설생산체계를 요구하고 있는 실정이다. 과거 우리나라 건설산업의 선진화 도구로 건설사업관리(CM) 제도가 도입되었다. 하지만, 전 방위적인 노력에도 불구하고 용역형 건설사업관리(CM for Fee)에 국한된 모습을 보이고 있다. 이에 따라 발주방식의 다양성이 요구되고 책임형 건설사업관리(CM at Risk) 발주방식의 도입 필요성이 제기되고 있다. 따라서 본 연구에서는 책임형 건설사업관리 발주방식의 수행 가능성이 높은 대형건설회사를 대상으로 경험과 지식수준, 건설사업관리 세부업무의 중요도 및 현재 역량과 미래 요구 역량수준을 각각 건축분야와 토목분야로 나누어 분석하였고, 이에 따른 역량 강화를 위한 항목을 도출하였다. For the purpose of analysing the capability (knowledge, experience, and ability) of CM at Risk in the major construction company in korea, this study performed questionnaire survey with experts in the companies. Based on the analysis of the survey, the study was found as follows. 1) It is needed to increase the capability of preconstruction services, such as project management plan/manual, contract documents, value engineering, alternative analysis, time management, and claim. 2) Despite of gap of the capability between the present and the future CM services, the study concluded that the capability is sufficient to perform CM at Risk project in the major construction company.

건축·도시분야의 융복합 대상 학문분야 도출을 위한 방법론적 접근

유승규(Yoo, Seung-Kyu),김재준(Kim, Jae-Jun),여옥경(Yeo, Ok-Kyung) 대한건축학회 2015 대한건축학회논문집 Vol.31 No.2

The purpose of this study is to extract fusion-required academic fields and fusion priority based on the various relationship between other academic fields and architecture·urban academic fields. Initial set of academic fields were gathered through practical worker-oriented survey (respondents: 254) in related academic fields. Then final set of academic fields (21 fields, 120 subjects) were reclassified through investigation of previous studies and cases of other fusion education. The result of this study is based on the expert survey (respondents: 37). Research finding are as follow, the first is that the sector-1 academic fields (economics, energy and resources, business management, environment, law) had high practical usability, academic relationship, expected effect. So these academic fields could be consider a fusion firstly. The second is that the sector-3 academic fields (electronics, mechanical engineering, medical engineering) had low practical usability, academic relationship, relatively high expected effect. According to this result, sector-3 academic fields could be consider a fusion in mid- and long-term point of view. The last is that the sector-2 academic fields (information and communication technology, human sensibility ergonomics) had low practical usability, intermediate academic relationship, slightly high expected effect. Therefore sector-2 academic fields could be consider a fusion in mid- short-term point of view.

다변량판별분석(MDA)기법을 이용한 외부감사 건설기업의 부도예측모형 개발에 관한 연구

유승규(Yoo Seung-Kyu),박정로(Park Jung-Ro),최재규(Choi Jae-Kyu),김재준(Kim Jae-Jun) 대한건축학회 2009 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.29 No.1(구조계)

The construction industry has job-order production structure that realize profit receiving owner's order and heavily dependent on owner's order. This reacts sensitively dropping consumer confidence, economic slump, changes in government policies and domestic/international situation. consequently, this fact have directly or indirectly influence on profitability of construction company. These situations are exposed that financial statements indicative of corporate's status. The construction corporate go through the progression of financial indexes deterioration, insolvency, suspension of current account transaction and than bankruptcy by lowering of profitability and lack of liquidity. Bankruptcy of Construction corporate bring on the chain bankruptcy of subcontractors and related company. and than mass dissimal occurred on industry. in the end, bring about the socially big problem. Thus, this paper described that feature of existing references about bankruptcy prediction in construction company, and developed a bankruptcy prediction model using on multivariate discriminant analysis method. and also, we described testing prediction power of the developed model and extracted variations affecting the bankruptcy on construction company. finally, Based on this result, we will expect that construction company against a bankruptcy danger and financial health improvement with recognized the bankruptcy symptom of financial ratio.

국내외 콘크리트 3D 프린팅 기술 및 적용 사례

유승규(Seung-Kyu Yoo),박현수(Hyun-Soo Park),배성철(Sung-Chul Bae) 한국콘크리트학회 2019 콘크리트학회지 Vol.31 No.1

3D 프린팅 기술을 적용한 비정형 구조체 시공 사례

유승규(Seung-Kyu Yoo) 한국콘크리트학회 2020 콘크리트학회지 Vol.32 No.4

인공지능 : 상황 인지 서비스를 위한 경량 규칙 엔진

유승규 ( Seung Kyu Yoo ),조상영 ( Sang Young Cho ) 한국정보처리학회 2016 정보처리학회논문지. 소프트웨어 및 데이터 공학 Vol.5 No.2

상황 인지 서비스는 서비스 대상의 주변 상황을 인지하여 상황에 맞는 유용한 서비스를 제공한다. 규칙 기반 시스템은 상황 정보를 IF 구문으로 표현하고 상황에 따른 동작을 THEN 구문으로 표현하는 규칙을 사용하여 상황 인지 서비스를 제공할 수 있다. 본 논문에서는 스마트 사물을 위하여 메모리 사용을 최적화한 경량 규칙 엔진을 제안한다. 제안된 엔진은 규칙을 기초 연산 단위로 관리하고 계산 값을 저장하는 메모리를 최소화하였으며 해시 표를 사용하여 규칙 및 상황 정보를 효율적으로 관리한다. 실제 쥐 훈련 시스템에서 사용하는 규칙 집합을 이용하여 제안된 엔진이 기존 Rete 알고리즘에 비하여 실행 속도는 다소 느리지만 매우 작은 메모리를 사용함을 확인하였다. Context-aware services recognize the context of situation environments of users and provide useful services according to the context for users. Usual rule-based systems can be used for context-aware services with the specified rules that express context information and operations. This paper proposes a light-weight rule engine that minimizes memory consumption for resource-constrained smart things. The rule engine manages rules at the minimum condition level, removes memories for intermediate rule matching results, and uses hash tables to store rules and context information efficiently. The implemented engine is verified using a rule set of a mouse training system and experiment results shows the engines consumes very little memory compared to the existing Rete algorithm with some sacrifice of execution time.

거시경제변동 전후 건설기업의 부실화 비교분석 - IMF 외환위기 및 서브프라임 금융위기 전후를 중심으로 -

최재규,유승규,김재준,Choi, Jae-Kyu,Yoo, Seung-Kyu,Kim, Jae-Jun 한국건설관리학회 2012 한국건설관리학회 논문집 Vol.13 No.4

과거 IMF 외환위기와 서브프라임 금융위기는 그 발생의 기원이 다를지라도 거시경제의 변동성에 크게 영향을 주었다. 이는 전체 산업에 상당한 영향을 미쳤을 뿐 만 아니라, 건설산업을 영위하는 개별 건설기업의 경영환경과 밀접하게 연계되어 많은 부실기업들을 양산하였다. 실제로 거시경제변동 전후 건설기업의 부실화 정도는 급격한 변화과정을 겪게 되며, 충격에 대한 반응 또한 기업별로 차이가 존재한다. 따라서 본 논문은 과거 IMF 외환위기와 최근 서브프라임 모기지 사태라는 거시경제변동 상황 하에서 건설기업 부실화의 변천과정을 확인하는데 그 목적이 있다. 거시경제변동 전후에 건설기업의 부실화 정도를 분석하기 위해 KMV 모형을 사용하여 예상부도확률(Expected Default Frequency)을 추출하였으며, 분석에 사용된 건설기업의 표본은 부실기업 20개, 정상기업 20개로 구성하였다. 분석결과 서브프라임 금융위기가 상대적으로 외환위기보다 건설기업에 더 큰 충격을 준 것으로 판단되며, 이는 거시경제 충격 이전의 건설시장의 상황과 관계가 있을 것으로 예상된다. 또한 부실기업과 정상기업을 비교해 보았을 때, 정상기업의 회복속도가 더 빠른 것으로 분석되었다. 이는 정상기업과 부실기업의 내부 사업역량차이에 의해 작용한 것으로 판단된다. 결과적으로 KMV 모형을 활용하여 건설기업의 부실화정도를 시간 흐름에 따라 측정하는 것이 가능함에 따라 각 시기별 부실화의 속성을 유추할 수 있을 것으로 판단된다. 이는 개별기업의 재무구조 개선 효과 및 투자자의 투자지표로 활용할 수 있음은 물론이며, 리스크 매니지먼트 관점에서 의사결정지표로 활용이 가능할 것으로 판단된다. The past IMF foreign exchange crisis and subprime financial crisis had a big influence on variability of macroeconomics, even if the origin of its occurrence might be different. This not only had a significant infrequence on the overall industries, but also produced many insolvent companies by being closely linked with a management environment of an individual construction company leading the construction industry. Actually, the level of default risk of construction companies before and after fluctuation of macroeconomics gets to experience a rapid changing process, and a difference in reaction against shock exists according to each company. Accordingly, the purpose of this paper is to confirm the fluctuation process of the default risk of construction companies under the fluctuation of macroeconomics such as the IMF financial crisis and the subprime mortgage crisis. As an analysis result, it is judged that the subprime financial crisis gave bigger shock to construction companies than the foreign exchange crisis, and it is expected that this would have a relation with the construction market before shock of macroeconomics. In addition, it was analyzed that when comparing insolvent companies with normal companies, the recovery speed of normal companies is faster. It is judged that this was affected by a difference of internal business capacity between insolvent companies and normal companies.

주거지역 범죄유발환경요인이 주택의 내재가치에 미치는 영향 분석

이종훈(Lee, Jong-Hoon),유승규(Yoo, Seung-Kyu),김주형(Kim, Ju-Hyung),김재준(Kim, Jae-Jun) 대한건축학회 2013 대한건축학회논문집 Vol.29 No.10

Recently, violent crimes that have repeatedly occurred in a particular region or space have intensified the insecurities of its victims as well as local residents. As a result, its residents have tended to relocate to other areas, negatively influencing housing prices. Existing studies have not made much progress in determining the relationship between the intrinsic value of housing and crime. On this basis, this paper analyzes the characteristics of criminal behavior, and crime-induced environmental factors that characterize near by residential areas are defined as variables according to the CPTED(Crime Prevention Through Environmental Design) factors. Hence, the purpose is to determine the variables’ impact on the intrinsic value of housing through the establishment of the hedonic price model. According to the estimation results of the research model, crime-induced environmental factors partially affect the intrinsic value of housing. Several variables(CCTV surveillance, intensity of illumination, separation distance) affect the intrinsic value of housing in the expected mark and are statistically significant. However, other variables(hierarchy of the road, path width) are consistent in the expected mark and yet are not statistically significant.

KMV 모형을 활용한 건설업체 부실화 측정에 관한 연구

최인식(Choi, In-Sik),유승규(Yoo, Seung-Kyu),김재준(Kim, Jae-Jun) 대한건축학회 2013 大韓建築學會論文集 : 構造系 Vol.29 No.2

The purpose of this research is to confirm a level of the default risk of construction companies and its changing process by utilizing the KMV model developed on the basis of the Black & Scholes option pricing theory. This research has set construction companies listed to KOSPI/KOSDAQ for applying the KMV model and measuring the level of the default risk of construction companies(14 indolvent companies and 14 non-insolvent companies). As an analysis result, it could be confirmed that the EDF of inslovent companies is higher than the EDF of non-insolvent companies and that insolvent companies relatively show a more serious level of default risk than non-insolvent companies in the analysis period. As a result of this research, it was analyzed that if the EDF of the KMV model is measured, it does not only discern existence of bankruptcy, but also can effectively examine the level and fluctuation process of the default risk of construction companies. It is judged that this can provide meaningful decision-making indicators to investors or managers of companies in the risk management viewpoint.

주택전세가격 및 매매가격이 부동산경매시장 매각가율에 미치는 영향 분석

박진용(Park, Jin-Yong),유승규(Yoo, Seung-Kyu),김주형(Kim, Ju-Hyung) 대한건축학회 2012 대한건축학회 학술발표대회 논문집 Vol.32 No.2