In this study, performance based seismic design was performed on the shear wall structural system and the beam-column system as a variable general rebar and seismic rebar, and comparing the capacity of the two models of each system. From nonlinear analyses, the capacity of the shear wall structural system applying seismic rebar has shown a stable behavior after the maximum strength, but there is little difference. Furthermore, both models showed similar capacity between story drift and story shear force and capacity of members. These results are attributed to the fact that the seismic rebar, which is highly ductile under the seismic load applied to the target structure, does not render sufficient capacity.

Recently there is a growing interest in the airborne spread of virus. In particular, there is growing interest in secondary infection through the air in the hospital. The distribution of air-born virus depends on ventilation system installed in a hospital. In this study, simulations were carried out to predict the move of air-born virus by ventilation system at hospital. Simulation results showed that pressure distribution was –372.05Pa ∼ -3.45 Pa at 1st floor incase of only used mechanical exhaust at bathroom, shower stall , storage, kitchen etc.. if ventilation switch from used mechanical exhaust to mechanical exhaust & mechanical supply. Simulation results showed that pressure distribution was -336.44Pa at stair hall < -0.2Pa at bathroom < mean 1.19Pa at other room. So simulation results showed that using all of the mechanical supply and mechanical exhaust was more effective then the mechanical exhaust for maintain the pressure distribution in hospital. It was also showed that when using the mechanical supply and mechanical exhaust more effectively prevention of air born virus diffusion.

The game industry, which has been rapidly developing these days in Korean society, is a socially debated issue for the fact that some games are allegedly likely to stir up a speculative drive in people. Among others, the speculativeness of games has been paid more attention by game developers because of the prevalent belief in Korean society that basically games are gambling, which has been more consolidated by reported illegal activities committed by some users of illegal games. More disturbingly, if regulations are put on the act of gaming, not on some speculative games, the nature of games could be distorted and an unexpected adverse effect would arise as a result. This study examines the appropriateness and the effect of the current game regulation from a perspective of game developers and investigates how the regulation and its operation affect the change of the nature of games. The findings of this study are expected to bring about the deeper exploration of the effect of game regulation and broaden the view on the Korean game industry.

This thesis provides background information on DFS carried out by the government in an effort to reduce the accident rate, cases of DFS in other advanced countries to study their risk detection, risk assessment, risk control measures, and cases in which application of DFS during the designing phase succesfully led to reduction of the accident rate. Till now, the focus has been on incident responses after the occurance of accidents, it describes the importance of considering safety during the desining process through safety results and cases.

This study has suggested an image analysis system based on the Deep Learning for CCTV pedestrian detection and tracing improvement and did experiments for objective verification by designing study model and evaluation model. The study suggestion is that if someone’s face did not be recognized in crime scene CCTV footage, the same pedestrian would be traced and found in other image data from other CCTV by using Color Intensity Classification method for clothes colors as body features and body fragmentation technique into 7 parts (2 arms, 2 legs, 1 body, 1 head, and 1 total). If one of other CCTV footage has recorded its face, the identity of the person would be secured. It is not only detection but also search from stored bulk storage to prevent accidents or cope with them in advance by cost reduction of manpower and a fast response. Therefore, CIC7P(Color Intensity Classification 7 Part Base Model) had been suggested by learning device such as Machine Learning or Deep Learning to improve accuracy and speed for pedestrian detection and tracing. In addition, the study has proved that it is an advanced technique in the area of pedestrian detection through experimental proof.

This study is to conduct the optimal design of the fluid mixing blades in the test fluid tank for sewage treatment process. The design was made with various shapes and angles of mixing blades. Fluid mixing blades in the tank are numerically analyzed with FLUENT V.13.0. Blade1 and Blade4 had the biggest fluid pressure difference of 8.1% around the blades. And, Blade1 and Blade3 had the least fluid pressure difference of 2.55%. The biggest turbulence kinetic energy of 12.5% existed around Blade1 and Blade4. Blade1 and Blade3 had the least turbulent kinetic energy difference of 4.8%. Blade4 is the optimal design shape due to the highest turbulent kinetic energy around the blades in comparison to the other cases.

Recently, the use of tubes in the manufacturing of the automobile parts has increased and therefore many automotive manufactures have tried to use hydro-forming technology. The hydro-forming technology may cause many advantages to automotive applications in terms of better structural integrity of the parts, lower cost from fewer part count, material saving, weight reduction, lower spring-back, improved strength and durability and design flexibility. In this study, the whole process of sub-frame parts development by tube hydro-forming using steel material is presented. At the part design stage, it requires feasibility study and process design aided by CAE (computer aided design) to confirm hydro-formability in details. Overall possibility of hydro-formable sub-frame parts could be examined by cross sectional analyses. All the components of prototyping tools are designed and interference with press is examined from the point of geometry and thinning.

On September 12, 2016, Gyeongju earthquake occurred. Its local magnitude was announced to be ML=5.8 by Korea Meteorological Administration (KMA). Ground motion data recorded at KMA, EMC and KERC stations was obtained from their data bases. From the data, horizontal and vertical response spectra, and V/H ratio were calculated. The horizontal spectrum was defined as geometric mean spectrum, GMRotI50. From the statistical analysis of the geometric mean spectra, a mean plus one standard deviation spectrum in lognormal distribution is obtained. Regression analysis is performed on this curve to determine the shape of spectrum including transition periods. Applying the same procedure, the shape and transition periods of vertical spectrum was obtained. These results were compared with the Korean standard design spectra, which were developed from domestic and overseas intraplate earthquake records. The response spectra of Gyeongju earthquake were found to be almost identical with the newly proposed design spectra. Even the V/H ratios showed good agreement. These results confirmed that the method adopted when developing the standard design spectra were valid and the developed design spectra were reliable.

김치 제조공정 중 절임배추 제조공정은 원료검사, 세절, 절임, 세척, 탈수, 포장의 공정으로 구성되며 절임배추의 품질은 제조공장의 생산설비, 절임환경 및 절임조건에 따라 달리 나타난다. 생산시스템은 제조공정을 효율적으로 수행하기 위한 사람과 설비 및 일하는 방법인 업무 프로세스의 집합을 말하며 제조현장과 관련된 여러 가지 자동화 시스템 중 MES(Manufacturindg Execution System)는 주문에서 최종 제품에 이르기까지 생산 활동에 필요한 최적의 정보를 관리하는데 필요한 시스템이다. 본 연구에서는 절임배추 제조공정을 보다 효율적으로 관리 할 수 있는 절임배추 제조관리시스템(MES)을 개발하고 이를 통해, 김치 제품의 생산관리를 원활하게 할 수 있도록 하였다. MES 데이터베이스 시스템 설계 및 구현을 위한 ERD(Entity Relationship Diagram)는 제조 공정별로 품질기준을 설정하여 표준화하여 적용하였으며 절임배추의 생산관리는 바코드 형식의 NFC(Near Field Communication) Tag를 이용하였다. 원자재관리를 위한 모니터링 시스템은 스마트 폰을 연동한 APP(Application)형태로 Eclipse 4.4.1 luna를 통해 개발하였으며, 모든 데이터의 통신은 MES내의 Open API(Application Programming Interface)를 통해 주고 받도록 설계하였다. 결과적으로 절임배추 생산을 위한 원재료 입출고 이력 및 생산이력은 MES 시스템을 이용하여 관리가 가능하며, 추후 양념 등을 포함한 김치 제품을 관리할 수 있는 기능을 포함하는 전주기 김치 제조관리시스템의 구축이 필요하다.