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멀티미디어/하이퍼미디어 정보부호화를 위한 MHEG 엔진의 설계
정광수 光云大學校 1995 論文集 Vol.24 No.-
The MHEG standard provides and encoding for multimedia/hypermedia information to be used and interchanged by applications in a wide range of domains. In this paper, we have designed the engine that interprets MHEG objects encoded according to the encoding specifications of the MHEG standard. To develop the architecture of the engine, we analyzed the existing multimedia server systems and the international standardization activities related to the MHEG. Based on our analysis, the general architecture and functional modules are designed. We have also developed the hardware and software platform for the implementation of the MHEG engine.
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鄭光洙 江原大學校 比較法學硏究所 2005 江原法學 Vol.20 No.-
Divorce is the legal termination of a marriage in the United States. But in some states, divorce is called dissolution or dissolution of marriage. A divorce or dissolution servers a marriage. This discussion refers to civil annulments; within the Roman Catholic Church, a couple may obtain a religious annulment after obtaining a civil divorce, in order for one or both spouses to remarry. It has now been more forty years since California, in late 1960s, launched the modern-day reform movement in divorce laws by adoption the first no-fault divorce law in the United States and eliminating the concept of fault in marriage dissolution actions. The no-fault movement was premised on the idea that the removal of fault as a basis for divorce would significantly reduce the amount of personal animosity and bitterness typically associated with divorce. While the actual terminology of no-fault grounds may vary from state to state, they share a common theoretical basis allowing for the dissolution of marriages deemed no longer viable, regardless of cause, rather than requiring that dissolution be granted only if based on the fault of one of the parties. Following California's lead, in August, 1970, the Uniform Marriage and Divorce Act (UMDA) was proposed by the National Conference of Commissioners on Uniform State Laws, recommending that the sole ground for divorce should be a finding of irretrievable breakdown of marriage. Delays in obtaining an endorsement of the UMDA by the American Bar Association meant that states eager to reform their divorce laws to the California legislation or early versions of the UMDA for guidance. The focus of this article is to examine the historical development and current status of one particular no-fault divorce issue associated with the dissolution of a marriage. A comparison of approach to no-fault divorce law in the United States with fault divorce law in the Korea should highlight the debate on these important issues of public policy.
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수상 태양광 발전을 위한 플라스틱 부유체 개발에 관한 연구
정광수,정인준,신동길 한국산학기술학회 2020 한국산학기술학회논문지 Vol.21 No.10
본 연구에서는 수상 태양광 발전설비를 위한 부유체 개발에 대하여 연구하였다. 부유체는 단위 모듈로 이루어진 금속재질의 프레임과 상부의 태양광 패널들을 수상에서 부력을 이용하여 지지하는 부품이다. 단위 모듈화된 프레임의 구조와 태양광 패널의 설치 환경을 고려하여 부유체에 작용하는 하중을 산출하였다. 부유체의 형상은 수압과 부력을 고려하여 바깥쪽으로 둥근 형태를 가지도록 하였으며, 유한요소해석을 수행하여 부유체의 세부 형상과 두께를 설계하였다. 설계된 부유체는 선형저밀도폴리에틸렌 플라스틱을 사용하여 회전성형법으로 제작하였다. 부유체의 압축강성을 측정한 결과, 제작된 부유체는 최대하중 322.7 kgf의 4배 이상에서도 붕괴를 일으키지 않고 강성을 유지하는 것으로 나타났다. 부유체의 장기 압축 시험을 수행하기 위하여 중력을 이용한 무게추 방식의 장기 하중 인가 장치를 제작하였다. 부유체에 무게추를 올린 후 7일 간 부유체의 압축량을 측정한 결과, 작은 하중에서도 지속적인 압축 변형이 발생하였다. 그러나 상시 하중 100 kgf 에 대하여 10년 압축량을 예측한 결과 약 4.64 mm 의 작은 변형이 예측되었다. 이와 같이 개발된 부유체는 수상 태양광 발전시스템에 사용이 가능한 것으로 나타났다. In this study, a floater was developed for a frame-type solar power plant. The floater supports the frame and the solar panels. A finite element analysis was performed to design its shape and thickness, and the floater was manufactured by a rotational molding method using linear low-density polyethylene. It was found that the floater did not cause collapse and it maintained its stiffness even at 4 times the maximum load of 322.7 kgf. To perform a long-term compression test, a weight-type load application device that uses gravity was designed and manufactured. The amount of compressive deformation was measured for 7 days, and a long-term deformation equation was obtained. Even under small loads, continuous deformation was observed. However, the 10-year deformation amount for a constant load of 100 kgf was predicted to be small at about 4.64 mm. As a result, it was found that the developed floater could be used in a solar power plant on a body of water.
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TRANSIMS의 단속류 네트워크 적용 가능성에 대한 연구
정광수,도명식,이종달,이용두,Jung, Kwnagsu,Do, Myungsik,Lee, Jongdal,Lee, Yongdoo 대한토목학회 2013 대한토목학회논문집 Vol.33 No.3
This study aims to verify the applicability of TRANSIMS (TRansportion ANalysis SIMulation System) in interrupted traffic flow through calibration and validation process based on observation data; such as headway, traffic volume, speed, and travel time from Dalguberl Boulevard in Dae-gu metropolitan city. On this study, several micro-simulation parameters are derived from the calibration and validation process through performing a headway comparison and applying an ID back tracking methodology. As a result, it is figured out that actual circumstances of Korean roadway; for example, traffic volume per lane, speed, and travel time, can be applied on the TRANSIMS. Especially, it was possible to find out the influence of cell size parameter to traffic flow characteristic of simulation. However, it is hard to conclude that TRANSIMS is applicable to Korean roadway environment with studying particular target area. Therefore, additional studies; such as more case studies with various types of road, signal, and land use, will be required to localize TRANSIMS to Korea.
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