Welding is one of representative manufacturing processes in the industrial field. Cryogenic storage containers are also manufactured through welding, and conversion to laser welding is issue in the field due to many advantages. Since welding causes thermal-elastic deformation, design considering distortion is required. Prediction of distortion through FEM is essential, but laser welding has difficulties in the field because there is no representative heat source model. The author presented the model that can cover various models using a multi-layer heat source model in previous studies. However the previous study has a limitation which is a welding heat source model must be derived after performing bead on plate welding. Thus this study was attempted to estimate the welding heat source parameters by comparing the shape of bead under various conditions. First, the difference between penetration shape and welding heat source parameters according to welding power was analyzed. The radius of the welding heat source increased according to the welding power, and the depth of the welding heat source also increased. The correlation between the penetration shape and the welding heat source parameter appears at a similar rate, however the follow-up research is necessary with more model data.

Welding is the most widely used technology for manufacturing in the automobile, and shipbuilding industries. Fiber laser welding is rapidly introduced into the field to minimize welding distortion and fast welding speed. Although it is advantageous to use finite element analysis to predict welding distortion and find optimized welding conditions, there are various heat source model for fiber laser welding. In this study, a welding heat source was proposed using a multi-layered heat source model that encompasses most of the existing various welding heat source models: conical shape, curved model, exponential model, conical-cylindrical model, and conical-conical model. A case study was performed through finite element analysis using the radius of each layer and the ratio of heat energy of the layer as variables, and the variables were found by comparing them with the actual experimental results. For case study, by applying Adaptive simulated annealing, one of the global optimization algorithms, we were able to find the heat source model more efficiently.

A combined treatment system using multiple source water is becoming important as an alternative to conventional water supply for small-scale water systems. In this research, combined water treatment systems were investigated for simultaneous use of multi-source water including rainwater, ground water, river water, and reclaimed wastewater. A laboratory-scale system was developed to systematically compare various combinations of water treatment processes, including sand filtration, microfiltration (MF), granular activated carbon (GAC), and nanofiltration (NF). Results showed that the efficiency of combined water treatment systems was affected by the quality of feed waters. In addition, a simply approach based on the concept of linear combination was suggested to support a decision-making for the optimum water treatment systems with the consideration of final water quality.

Noise barriers along the road do not only block the traffic noise but also prevent traversing the car exhausts. These barriers may affect air pollution dispersion, leading to increase vertical mixing due to the upwind deflection of air flow caused by the noise barriers. In this study we investigated the air pollution dispersion around multi-noise barriers using commercial software FLUENT. Investigated cases were 8 cases which had from zero to three noise barriers and two emission sources. Simulated results show noise barriers increase the vertical air pollution impact distance larger 1.7~2.1 times than that of no barrier case. It was also found that noise barriers decrease the horizontal air pollution impact distance lower 0.6~0.8 times than that of no barrier case.

PC 패키지 게임 <Sims3>와 소셜네트워크게임(SNG) <Social Sims>의 스토리텔링을 그레마스의 기호학을 적용하여 분석하였다. 이를 위해 다차원적 접근이 요구되는 게임 스토리텔링 과정을 표면, 표층, 심층층위와 같이 3가지로 구분하였다. 표면과 표층층위의 스토리텔링은 ‘행동자 모델’을 적용하여 분석하였으며 심층층위의 스토리텔링은 상호작용성을 기준으로 다시 세분하고 ‘기호학 사각형’을 적용하였다. 그 결과 PC 플랫폼 기반의 <Sims3>가 가지는 ‘외적 창조적’ 상호작용성이 SNG <Social Sims>에서는 ‘내적 해석적’ 상호 작용성으로 변환되었고, 스토리텔링 논리 역시 ‘전능적 서사’에서 ‘사회적 서사’로 전환되었음을 알 수 있었다. 본 연구를 통해 기존 콘텐츠가 새로운 플랫폼에 적용되기 위해서는 이용자의 요구를 반영한 스토리텔링 전환이 필요함을 알 수 있다.

Multi-source evaporation is one of the methods to improve the thickness uniformity of thin films deposited by evaporation. In this study, a simulator for the relative thickness profile of a thin film deposited by a multi-source evaporation system was developed. Using this simulator, the relative thickness profiles of the evaporated thin films were simulated under various conditions, such as the number and arrangements of sources and source-to-substrate distance. The optimum conditions, in which the thickness uniformity is minimized, and the corresponding efficiency, were obtained. The substrate was a 5th generation substrate (dimensions of 1300 mm × 1100 mm). The number of sources and source-to-substrate distance were varied from 1 to 6 and 0 to the length of the major axis of the substrate (1300 mm), respectively. When the source plane, the area on which sources can be located, is limited to the substrate dimension, the minimum thickness uniformity, obtained when the number of sources is 6, was 3.3%; the corresponding efficiency was 16.6%. When the dimension of the source plane is enlarged two times, the thickness uniformity is remarkably improved while the efficiency is decreased. The minimum thickness uniformity, obtained when the number of sources is 6, was 0.5%; the corresponding efficiency was decreased to 9.1%. The expansion of the source plane brings about not only the improvement of the thickness uniformity, but also a decrement of the efficiency and an enlargement of equipment.

오늘날 문화콘텐츠를 활용한 많은 문화산업의 부가가치 창출 사례를 볼 때 문화콘텐츠와 디지털 스토리텔링의 중 요성은 높아지고 있다. 우리나라의 문화콘텐츠에 대한 OSMU의 가능성을 높이기 위해서는 OSMU가 잘 이루어지고 있 는 다른 나라의 사례 분석을 통해 적절한 활용 방안을 마련해야 한다. 본 논문에서는 게임의 세계관에 많이 활용되는 북유럽 신화와 신화를 반영한 컴퓨터게임 ‘RING'의 분석을 통해 우리나라 문화콘텐츠의 발전가능성을 모색해보고자 한다.

Expanded muti-source Weber problem (EWP), which introduced in this paper, is a reverse logistics network design problem to minimize the total transportation cost from customers thorough regional center to central center. Decision factor of EWP are the locations of regional centers and a central center. We introduce a GRASP heuristics for the EWP. In the suggested GRASP, an expanded iterative location allocation method (EILA) is introduced based on the Cooper's iterative location allocation method[3]. For the initial solution of GRASP, allocation first seed (AFSeed) and location first seed (LFSeed) are developed. The computational experiment for the objective value shows that the LFSeed is better than the AFSeed. Also the calculating time of the LFSeed is better than that of the AFSeed.

본 연구에서는 관형보다 단위시간당 투과량이 월등히 많은 다채널 세라믹 분리막을 사용하였으며, 고도정수처리 혼성공정은 모듈 내부와 다채널 정밀여과막 외부 사의의 공간에 입상활성탄(GAC)을 충전하여 구성하였다. 정수 원수 중의 자연산 유기물(NOM)과 미세 무기 입자를 대체하기 위해, 휴믹산(humic acid)과 카올린(kaolin) 모사용액을 사용하였다. 유기물질의 영향을 살펴보기 위해 일정한 30mg/L의 카올린 농도에서 휴믹산(humic acid)의 농도를 2~10 mg/L로 변화시켰다. 그 결과, 막오염의 저항(Rf)과 투과선속(J)은 휴믹산의 농도에 따라 큰 영향을 받았다. 또한 역세척 주기(FT)의 영향을 살펴본 결과, 더 짧은 FT는 빈번한 역세척으로 막오염의 감소와 투과선속의 향상에 더 효과적이었다. 그러나 운전비용을 고려하면, 최적 FT조건은 8분이였다. 한편, 이 다채널 정밀여과막 및 GAC 혼성공정을 호소수에 적용한 결과, 평균 처리효율은 탁도 98.02%, UV254 흡괌도 75.64%, 총용존고형물(TDS) 7.18%, 화학적산소요구량 84.73%이었다.

Fuzzy information representation of multi-source spatial data is applied to landslide hazard mapping. Information representation based on frequency ratio and non-parametric density estimation is used to construct fuzzy membership functions. Of particular interest is the representation of continuous data for preventing loss of information. The non-parametric density estimation method applied here is a Parzen window estimation that can directly use continuous data without any categorization procedure. The effect of the new continuous data representation method on the final integrated result is evaluated by a validation procedure. To illustrate the proposed scheme, a case study from Jangheung, Korea for landslide hazard mapping is presented. Analysis of the results indicates that the proposed methodology considerably improves prediction capabilities, as compared with the case in traditional continuous data representation.

Recently, spatial data integration for geoscientific application has been regarded as an important task of various geoscientific applications of GIS. Although much research has been reported in the literature, quantitative assessment of the spatial interrelationship between input data layers and an integrated layer has not been considered fully and is in the development stage. Regarding this matter, we propose here, methodologies that account for the spatial interrelationship and spatial patterns in the spatial integration task, namely a multi-buffer zone analysis and a statistical analysis based on a contingency table. The main part of our work, the multi-buffer zone analysis, was addressed and applied to reveal the spatial pattern around geological source primitives and statistical analysis was performed to extract information for the assessment of an integrated layer. Mineral potential mapping using multi-source geoscience data sets from Ogdong in Korea was applied to illustrate application of this methodology.

요즘 중한 양국 문화 영역의 합작이 심화하고 있다. '원소스 멀티테리토리'모식으로 제작한 중한 영화들을 관객의 주목을 받았다. 하지만 <용하형경>과 <극한직업>이 개봉하면서 양극화 관영 평가와 현격 한 흥행 차이가 생겼다. 따라서 본 논문에서는 두 영화를 중심으로 내러티브, 캐릭터로서 현지화 원소의 운용을 대비하고 분석한다. 같은 스토리는 어떻게 다른 나라의 현지화 사회 문화를 표현할 수 있는 것에 대해 살펴보고 더 우수한 중국 영화를 만들기 위해 현지화 원소의 활용 방법을 총결해야 한다.