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3차원 입체 변환을 위한 MPEG 압축 데이터에서의 영상 처리 기법
김만배 한국방송공학회 1998 한국방송공학회 학술대회 Vol.1 No.1
The conversion of monoscopic video to 3D stereoscopic video has been studied by some pioneering researchers. In spite of the commercial potential of the technology, two problems have bothered the progress of this research area: vertical motion parallax and high computational complexity. The former causes the low 3D perception, while the hardware complexity is required by the latter. The previous research has dealt with NtSC video, thus requiring complex processing steps, one of which is motion estimation. This paper proposes 3D stereoscopic conversion method of MPEG encoded data. Our proposed method has the advantage that motion estimation can be avoided by processing MPEG compressed data for the extraction of motion data as well as that camera and object motion in random directions can be handled.
김만배 경기연구원 2003 경기논단 Vol.5 No.2
The traffic safety management does not seem to be recognized as an important policy issue in the provincial governments differently from the central government. In particular, in the case of the wide area local autonomous entities including Kyonggi province, the above problem is more critical for the reasons that the rights concerning a traffic safety, vehicle management, traffic regulation, etc. belong to the central government, and the improvements concerning the traffic safety related facilities are basically handled by the basic local autonomous entities. Therefore, the role of the wide area local autonomous entities like Kyonggi province is limited. Based on the above background, it is an object of the present research to enhance a role in the traffic safety management that the wide area autonomous entities like Kyonggi province must perform. In addition, this research is focused on the traffic safety management of business vehicles for the reasons that almost traffic safety management businesses of Kyonggi province are involved in the business vehicles. As a result of the analysis which are performed based on a search method through a proceeding research concerning the traffic safety, related laws, etc., this research suggests that it is needed to reinforce the organization of the traffic safety management of Kyonggi province, to establish a detailed plan on the traffic safety, to obtain an execution force concerning the instruction and supervision works with respect to the transportation business companies, and toconstruct a safety management system for local roads.
金萬培 건국대학교 1991 대학원 학술논문집 Vol.33 No.-
I studied on the organizational development of the Ministry of Transport the future. Generally speaking, The transportation administration system goal of governments typically invoke irrefutable good concepts such as mobility and the need for comprehensive, integrated, efficient, safe, equitable, environmentally-sound and energy-saving transport system. Also, Transportation administration functions and organizations very according to mode level of government. Common to all modes are function such as system planning and programming, design and construction, operations, maintenance, coordination with other modes regulation, funding and grantsmanship, and research and development. Transportation generally contributes directly about one-tenth of the value-added in most economics. Indirectly, However, its contribution is much greater since, in the extreme, virtually all of the gross national product(GNP)is dependent on transportation. Thus the improvement transportation is basic to natinal economic growth and plays a central role in the broader development procoss(involving aspects such as political and social integration as well as purely public welfare services). But, In the recent years new problems has placed on old concerns-concern with the impacts on neighborhoods air and noise pollution, and the energy-consumption characteristics of alternative transportation. In particular, Urban transport problem is provided by the seven-element, so-called, accidents, parking difficulties, traffic management, environmental impact, difficulties for pedestriants, peak hour crowding on public transport and off-peak inadequancy of public transport, and so on. There are indications that these problems have a bad situation in Korea. If the transportation administration system cannot keep up with this problems and isses in demand for transportation in Korea, It risks becoming a drag or a bottleneck to national development and everyone's life. Therefore, the purpose of this treatise is to shed some light on social isses or dilemmas in transportation administration system in korea, especially point out the dispersion of this relation system, then not cope with the situation of transportation. The definition of the transportation administration system can be the maximization of transportation supply capability and control the minimization dysfunction. From this point of view, the flexibility of response of the transportation organization system must be preserved so as to avoid economic demage caused by unnessary or inappropriate cutback in transport operation or development in an effect to reorganize the ministry of transport in korea. In conclusion, I proposed that the improvement of the Korea's transportation organization system reorganize as soon as possible to assure the coordinated, effective administration of transportation programs, to facilitate the development and improvement of coordinated transportation service, to develop national transportation policies and programs conducive to the provision of fast, safe, efficient and convienient transportation, to stimulate technological advances, research and inevitablely development in transportation, and inevitablely considerate "continuing, comprehensive, coordinated", socalled "3C", planning in transportation planning process, and to develop the nationed transportation policies and programs to accomplish those objectives with full and appropriate consideration of the needs of the public, users, carries, industry, labor, and the national economic development.
김만배,박창용 대한기계학회 2017 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.31 No.5
An experimental study on heat transfer and pressure drop characteristics was performed at single phase flow in two Brazed plate heat exchangers (BPHEs) with different geometries. The corrugation density of one of the BPHE (Type II) was two times as high as that of the other BPHE (Type I). The hydraulic diameter of the type II BPHE was 2.13 mm, which was 38 % smaller than that of the type I BPHE. Also, the cross section shape of the flow channels for the type II BPHE was different from that for conventional BPHEs due to the unusual corrugation patterns and brazing points. The experimental conditions for temperatures were varied from 4.6 °C to 49.1 °C, and for mass flow rates were changed from 0.07 kg/s to 1.24 kg/s. The measured results showed that pressure drop in the type II BPHE was about 110 % higher than that in the type I BPHE. Nu of the type II was higher than that of the type I BPHE and the enhancement became larger with the increase of Re at the ranges above 800. New correlations for f F and Nu were proposed by this study and their prediction accuracy could be improved by considering the surface enlargement factor in the correlations. The performance evaluation of the two BPHEs was performed by (j/f F1/3 ) which represented the ratio of heat transfer and pressure drop performance. Also, a new parameter, the capacity compactness of PHE, was proposed and it presented the PHE capacity per unit volume and unit log mean temperature difference. The comparison showed that the two BPHEs had similar values of the (j/f F1/3 ), whereas they had significantly different values of the capacity compactness. The capacity compactness of the type II BPHE was 1.5 times higher than that for the type I BPHE.