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클레임코스트를 고려한 프로젝트의 시간-비용 혼합정수계획모형
김종열(Jong Yul Kim),강창욱(Chang Wook Kang),황인극(In Keuk Hwang) 한국산업경영시스템학회 2011 한국산업경영시스템학회지 Vol.34 No.3
Previous researches have focused on the efficiency of project execution and the satisfaction of internal customers in view of the fact that a project is successful if any defects are not found in the short-term performance test of the project final outcome. To execute a project that both internal customer and external customer are satisfied in terms of longer-term benefit perspective, the project claim costs (PCC) which may occur for the warranty period of the project final outcome should be considered. We propose a model included PCC to the linear programming between time and cost to expedite a project and perform the validity test by applying the model to an example project. This model and related procedure will contribute to overall project activities’ cost reduction by taking preventive actions for PCC.
김종열(Jong Yul Kim),강창욱(Chang Wook Kang),황인극(In Keuk Hwang) 한국산업경영시스템학회 2011 한국산업경영시스템학회지 Vol.34 No.4
Traditional quality control for manufacturing or service sector is not suitable for the quality control of a project as the project is one-time task constrained by time, cost, and quality. To meet the internal and external customers’ requirements, quality costs approach to the project will be effective. Hence, we propose PONC (price of nonconformance) estimation procedure and a mathematical model, which are focused on activity-based prevention in the execution step and warranty step of EPLC (extended project life cycle). This procedure and model will help project manager develop preventive action plan for project quality costs minimization from nonconformance risk activities and PONC estimates information.
김영주(Young ju Kim),오오성(Oh sung Oh),김종열(Jong yul Kim),이승욱(Seung Wook Lee) 대한방사선과학회(구 대한방사선기술학회) 2015 방사선기술과학 Vol.38 No.1
격자 간섭계(grating interferometer)는 방사선 영상분야의 새로운 기술로서, 흡수 영상(absorption imaging)뿐만 아니라 위상차 영상(phase contrast imaging)과 다크필드 영상(dark field imaging)을 제공한다. 격자 간섭계는 크게 탈봇 효과(talbot effect)를 이용하는 탈봇 간섭계와 탈봇-라우 효과(talbot-lau effect)를 이용하는 탈봇-라우 간섭계로 나뉘는데, 일반적인 방사선 영상시스템과 달리 방사선의 간섭을 예측하고 적용하는 것이 중요하다. 본 연구에서는 현재 부산대학교 중성자 및 방사선 공학 연구실에서 보유하고 있는 엑스선 격자 세트와 중성자 격자 세트를 이용하여 탈봇 간섭 패턴 및 탈봇-라우 간섭 패턴을 제작하였다. 이를 통해 방사선의 파동 거동에 따른 간섭세기의 변화를 예측하고, 격자 간섭계를 구성하는 각 요소들을 계산했다. 그리고 격자의 종류 및 위상차 물체에 대한 탈봇 간섭 패턴 및 탈봇-라우 간섭 패턴을 예측하였다. One of properties which X-ray and Neutron can be applied nondestructive test is penetration into the object with interaction leads to decrease in intensity. X-ray interaction with the matter caused by electrons, Neutron caused by atoms. They share applications in nondestructive test area because of their similarities of interaction mechanism. Grating interferometer is the one of applications produces phase contrast image and dark field image. It is defined by Talbot interferometer and Talbot-Lau interferometer according to Talbot effect and Talbot-Lau effect respectively. Talbot interferometer works with coherence beam like X-ray, and Talbot-Lau has an effect with incoherence beam like Neutron. It is important to expect the in-terference in grating interferometer compared normal nondestructive system. In this paper, simulation works are conducted according to Talbot and Talbot-Lau interferometer in case of X-ray and Neutron. Variation of interference intensity with X-ray and Neutron based on wave theory is constructed and calcu-late elements consist the system. Additionally, Talbot and Talbot-Lau interferometer is simulated in different kinds of conditions.
Halothane 마취중 Vecuronium과 Pancuronium 투여가 심혈관계 및 회복시간에 미치는 영향
길기진,김종열,이정은,김혜자,최세진 충남대학교 의과대학 지역사회의학연구소 1986 충남의대잡지 Vol.13 No.2
This study was taken to abserve the effect on cardiovascular response and recovery time with pancuronium and vecuronium. The patients was composed of 20 healthly both sex adults who belong to class I of ASA physical status. Vecuronium 0.1mg/kg(N=10) and pancuronium 0.1mg/kg(N=10) was injected independently at 20 minutes after intubation by succinylcholine 1mg/kg and thiopental sodium. The results were as follow. 1. There were not a significant difference in arterial blood pressure and pulse rate before and after vecuronium injection. 2. After pancuronium administration, arterial blood pressure was not significant change but pulse rate showed significant increasing. 3. In the recovery time when T_1 was recovered to 25% after administration of muscle relaxants respectively, there were 26±7.2 min, vecuronium and 67±11.2 min, in pancuronium. 3. EKG was not change before and after vecuronium.
嚴采永,金鍾烈 동아대학교 공과대학 부설 한국자원개발연구소 1978 硏究報告 Vol.3 No.1
This studies is to carry out the results of the experiments on the effect of the workability and the characteristic of strength change on concrete using fly-ash a admixing agent of K.S. specification of concrete. Analyses on the comparison of external mixing and internal mixing of 10%, 20%, and 30% and general concrete without admixing agent were experimentally performed each other. A summary of the experimental results is shown below. The case of external mixing of admixing agent into concrete was observed better tendency of effect of reducing water than the case of internal mixing. Specially external mixing of 10% approached optimal effect of mixing. Compressive strength of concrete was seen a decreasing tendency in the case of internal mixing of admixing agent in concrete but a increasing tendency has broken out at the case of external mixing. In particular, at the earlier age a decreasing phenomena of compressive strength were originated critical, at the more long-date age a increasing phenomena were occued enormously.