건설현장 안전관리 인력투입에 대한 효율성 분석

양용구,김병석 대한안전경영과학회 2015 대한안전경영과학회지 Vol.17 No.4

This study analyzed the safety management efficiency through input-oriented BCC Model using DEA by making of Models, in which this study selected the number of staff affiliated with the construction site, number of staff members on the construction team, and number of safety personnel as Input Factor, along with the number of disaster victims and zero-accident accomplished hours as output elements, targeting 40-or-so apartment building construction sites which are being built by 3 domestic construction companies. As a result of efficiency, it was 0.643, the number of efficient DMU was 4. In the aspect of returns to scale, 21 construction sites(52.5%) found to be in a state of increasing returns while 14 construction sites(35%) was in a state of Decreasing returns. The reason for inefficiency was found to lie in technical factors in case of 30 construction sites(75%). Lastly, inefficient DMU is in need of 38.9 % and 66% reduction in site personnel and safety personnel. Based on study results, the 29 construction sites accounting for 72.5% of DMU for safety management efficiency evaluation object turned out to do inefficient safety management that doesn't fit the size of each company.

건설근로자의 피로도와 스트레스 및 재해위험의 구조적 관계

양용구,김병석 대한안전경영과학회 2014 대한안전경영과학회지 Vol.16 No.3

This study empirically examines how much effect levels of fatigue and stress of a construction worker have on disaster risks from the perspective of human factors concerning construction disaster risks. To achieve the purpose of this study, a survey was conducted with respect to construction workers working at large construction sites within the metropolitan area. The retrieved survey data were analyzed by using the statistical software programs, SPSS 18.0 and AMOS 8.0. The results of this study do not definitively lead to the conclusion that the level of fatigue or stress of construction workers result in disaster risks. However, it does show that the results vary depending upon the individual approach and treatment of stress and fatigue. In particular, this study revealed that disaster risk levels could increase through unsafe behavior intentions which were established as a mediator variable. Also, with respect to unsafe behavior intentions of construction workers leading to disaster risks, when examining the results that the level of mental fatigue, occupational stress and social-psychological stress of construction workers had a greater significant effect than the level of physical fatigue, this study demonstrates the importance of psychological and mental issues that could be easily overlooked with respect manual labor workers.

건설재해손실 영향요인 및 우선순위 분석 - 비보험비용 항목을 중심으로 -

양용구,김병석 대한안전경영과학회 2014 대한안전경영과학회지 Vol.16 No.3

With a view to analyzing the influential factors and their prioritization in association with the loss from construction disasters, this study has presented relative weighted value and importance for each category of loss by making a systematic classification of costs for non-insured categories (indirect costs) and conducting AHP analysis based on results of a survey of specialists. Through the study, first, I have divided the larger classification of loss factors into human loss factor, financial loss factor, special cost factor, and managerial loss factor, and, second, have presented prioritization of loss categories by allotting scores based on weighted values after calculating weighted value through pairwise comparison of loss levels. Based on these results of the study, we should be able to qualitatively calculate the loss costs that construction disasters inflict on business, promote rational decision-making and efficiency in spending related to a disaster, and compare it against safety investment designed to reduce disaster loss from the perspective of business strategy.

건설현장 안전관리 인력투입에 대한 효율성 분석

양용구,김병석 대한안전경영과학회 2015 대한안전경영과학회지 Vol.17 No.4

This study analyzed the safety management efficiency through input-oriented BCC Model using DEA by making of Models, in which this study selected the number of staff affiliated with the construction site, number of staff members on the construction team, and number of safety personnel as Input Factor, along with the number of disaster victims and zero-accident accomplished hours as output elements, targeting 40-or-so apartment building construction sites which are being built by 3 domestic construction companies. As a result of efficiency, it was 0.643, the number of efficient DMU was 4. In the aspect of returns to scale, 21 construction sites(52.5%) found to be in a state of increasing returns while 14 construction sites(35%) was in a state of Decreasing returns. The reason for inefficiency was found to lie in technical factors in case of 30 construction sites(75%). Lastly, inefficient DMU is in need of 38.9 % and 66% reduction in site personnel and safety personnel. Based on study results, the 29 construction sites accounting for 72.5% of DMU for safety management efficiency evaluation object turned out to do inefficient safety management that doesn't fit the size of each company.

김치 발효를 위한 Leuconostoc mesenteroides 균주의 개량과 starter로의 첨가효과

강상모,양완숙,김영찬,정은영,한용구 한국산업미생물학회 1995 한국미생물·생명공학회지 Vol.23 No.4

김치로부터 Leuconostoc mesenteroides 균주를 선별한 후, NTG로 변이처리를 하여 내산성이며, 낮은 pH에서도 증식하며, 높은 CO_2 생성 능력을 갖는 균주로 개량하였다. HCl로 pH를 조절한 MRS 배지에서 변이주 M-10균주는 30℃에서 pH 5.0∼3.5, 20℃에서는 pH 5.0∼3.8, 10℃에서 변이주 M-10균주가 야생주 K-1균주 보다 더 많은 CO_2를 생성하였다. 젖산으로 pH를 조절한 MRS배지에서 내산성 변이주 Leuconostoc mesenteroides M-10균주가 받는 증식저해 영향은 야생주 K-1균주에 대한 것보다 적었다. 내산성 변이주 Leuconostoc mesenteroides M-10균주를 김치에 starter로 첨가하였을 때 10℃에서 야생주 K-1균주에 비하여 당소비가 떨어지고 pH 변화량과, 총산도 증가폭도 감소하고, 상쾌미에 의한 기호도도 향상되는 것이 나타났다. The heterofermentative Leuconostoc mesenteroides, which is propagated form the initial to the intermediate stage of Kimchi fermentation, produces organic acids and carbon dioxide to impart refreshment, weak acid taste to Kimchi. But owing to lactic acid production by the homofermentative Lactobacillus plantarum, Kimchi finally reaches its acidified state. So, Leu. Mesenteroides was isolated from Kimchi and identified and was improved by mutation for carbon dioxide production at low pH, and for the high total acceptability. We tested with a wild-type strain K-1 and its improved mutant strain M-10 of Leu. Mesenteroides. The wild-type strain K-1 could grow in pH 4.2 at 30℃ or 20℃, and in pH 5.0 at 10℃. But the mutant strain M-10 could grow in pH 3.3 at 10℃. In the respect of total acceptability, mutant strain M-10 inoculated Kimchi was ever better than any others. Mutant M-10 inoculated Kimchi prolonged the optimum ripening period of Kimchi up to two times as compared with the control group.

사례분석을 통한 이동식 크레인의 안전성에 관한 연구

김병석,양용구 대한안전경영과학회 2012 대한안전경영과학회 학술대회논문집 Vol.2012 No.2

이동식 크레인과 관련한 안전사고가 다발하고 있음에도 국내 대부분의 건설현장에 서는 아직도 관리감독자와 크레인 운전자의 경험에 의존하여 장비를 선정하고 운용하 고 있는 실정이다. 본 연구를 통해 건설현장에서 발생한 이동식 크레인 전도사고사례와 위험성 평가를 실시한 결과 이동식 크레인을 이용한 안전한 자재 양중작업을 위하여 중량물의 무게· 형상, 인양장비 제원, 정격하중, 작업반경 등을 고려한 중량물 취급작업계획을 작성·준 수하고 이동식 크레인의 제작·설계기준 준수를 위하여 이동식 크레인 제조사에서 제공 하는 사용(취급)설명서를 준수하며 위험성 평가 결과가 실제 이동식 크레인을 사용한 양중작업에 적용 가능하도록 지속적인 관리 등이 요구됨을 알 수 있었다.

고구마 주요품종 조기재배 시 재배기간에 따른 괴근 비대 특성 차이

고산,강용구,남상식,양정욱,유경단,이경보,이형운,황엄지 한국작물학회 2017 한국작물학회 학술발표대회 논문집 Vol.2017 No.-

사례분석을 통한 이동식 크레인의 안전성에 관한 연구

김병석,양용구 대한안전경영과학회 2012 대한안전경영과학회 학술대회논문집 Vol.2012 No.11

이동식 크레인과 관련한 안전사고가 다발하고 있음에도 국내 대부분의 건설현장에 서는 아직도 관리감독자와 크레인 운전자의 경험에 의존하여 장비를 선정하고 운용하 고 있는 실정이다. 본 연구를 통해 건설현장에서 발생한 이동식 크레인 전도사고사례와 위험성 평가를 실시한 결과 이동식 크레인을 이용한 안전한 자재 양중작업을 위하여 중량물의 무게· 형상, 인양장비 제원, 정격하중, 작업반경 등을 고려한 중량물 취급작업계획을 작성·준 수하고 이동식 크레인의 제작·설계기준 준수를 위하여 이동식 크레인 제조사에서 제공 하는 사용(취급)설명서를 준수하며 위험성 평가 결과가 실제 이동식 크레인을 사용한 양중작업에 적용 가능하도록 지속적인 관리 등이 요구됨을 알 수 있었다.

고구마 재배시 시비량이 괴근 수량 및 품질에 미치는 영향

남상식,황엄지,양정욱,유경단,이경보,고산,이형운,강용구,이준설,정응기 한국작물학회 2017 한국작물학회 학술발표대회 논문집 Vol.2017 No.-

고구마 바이러스 무병묘 정식시기별 적정크기의 씨고구마 수량성

남상식,황엄지,양정욱,유경단,이경보,고산,이형운,강용구,이준설,정응기 한국작물학회 2017 한국작물학회 학술발표대회 논문집 Vol.2017 No.-