• 제목/요약/키워드: International Joint Research

검색결과 425건 처리시간 0.034초

타설 경계면을 고려한 철도교 콘크리트궤도 전단키의 전단 거동 해석 (Analysis of Shear Behavior of Shear Key for Concrete Track on Railway Bridge Considering Construction Joint)

  • 이성철;강윤석;장승엽
    • 한국철도학회논문집
    • /
    • 제19권3호
    • /
    • pp.341-350
    • /
    • 2016
  • 철도교량 구간의 콘크리트 궤도는 교량 상부구조의 움직임에 효과적으로 대응할 수 있도록 설계되어야 한다. 이를 위해 일반적으로 전단키로 명명되는 전단키를 교면 보호 콘크리트층(PCL) 위에 일정 간격으로 설치하여 그 위에 궤도 슬래브를 타설함으로써 궤도와 교량 상부구조의 상대 변위에 의해 발생하는 전단력을 전달하도록 설계하고 있다. 이 연구에서는 전단키의 전단 거동을 예측하기 위해 타설 경계면을 고려한 비선형 구조 해석 방법을 제시하였다. 제시된 해석 방법은 콘크리트 면에서의 마찰력과 철근의 다월 거동을 고려함으로써 전단키 타설 경계면(시공이음부)에서의 전단력-전단 미끌림 거동을 예측할 수 있으며, 해석 결과 4개의 시험체에 대한 실험 결과를 잘 예측하는 것으로 나타났다.

Joint Reasoning of Real-time Visual Risk Zone Identification and Numeric Checking for Construction Safety Management

  • Ali, Ahmed Khairadeen;Khan, Numan;Lee, Do Yeop;Park, Chansik
    • 국제학술발표논문집
    • /
    • The 8th International Conference on Construction Engineering and Project Management
    • /
    • pp.313-322
    • /
    • 2020
  • The recognition of the risk hazards is a vital step to effectively prevent accidents on a construction site. The advanced development in computer vision systems and the availability of the large visual database related to construction site made it possible to take quick action in the event of human error and disaster situations that may occur during management supervision. Therefore, it is necessary to analyze the risk factors that need to be managed at the construction site and review appropriate and effective technical methods for each risk factor. This research focuses on analyzing Occupational Safety and Health Agency (OSHA) related to risk zone identification rules that can be adopted by the image recognition technology and classify their risk factors depending on the effective technical method. Therefore, this research developed a pattern-oriented classification of OSHA rules that can employ a large scale of safety hazard recognition. This research uses joint reasoning of risk zone Identification and numeric input by utilizing a stereo camera integrated with an image detection algorithm such as (YOLOv3) and Pyramid Stereo Matching Network (PSMNet). The research result identifies risk zones and raises alarm if a target object enters this zone. It also determines numerical information of a target, which recognizes the length, spacing, and angle of the target. Applying image detection joint logic algorithms might leverage the speed and accuracy of hazard detection due to merging more than one factor to prevent accidents in the job site.

  • PDF

인도 녹색산업 진입 전략에 대한 탐색적 연구 - 재생에너지 분야를 중심으로 - (The Exploratory Study on the Entry Mode for Indian Green Industry)

  • 박현재;박세훈
    • 무역상무연구
    • /
    • 제55권
    • /
    • pp.265-290
    • /
    • 2012
  • CEPA (Comprehensive Economic Partnership Agreement) between India and Korea may vitalize Korean economy more and more. Currently most of Korean firms have entered into manufacturing industries like electronics and automobiles. But only a few Korean companies are trying to penetrate into Indian green industry so this paper suggest how to enter into Indian green industry, especially renewable energy sectors. First, Exporting main shaft, tower-flange and polysilicon products can be considered, as a first step of entry mode. Second, entry mode based on contract like technology licensing, strategic alliance and joint venture establishment can be also one of options. For example, Korean solar energy industry which show more competitiveness than that of Indians should try to make technological licensing on PV modules. In addition to this, they should also try to make joint ventures with right Indian partners and build up 'Solar City' nearby regions like Gurgaon in India where many Korean firms are located. Korean shipbuilding firms like Hyundai Engineering which keep on developing wind turbo engines can also try to make strategic alliance with Indian firms like Suzlon which has strong competitiveness. After that, they should explore Korean and Indian wind sector markets together. Third, brownfield investment can be last and final option as a entry mode as we consider the peculiar characteristics of renewable energy industry. Lastly, Korean government which are rush to indulge into green business should formulate more proper and realistic policies to give big incentives the concerned firms which are trying to open international green market so government should make Korean green firms not to lose good market opportunities related to green industry like renewable energy sectors. Renewable energy sectors are basically regarded as infrastructures so close contact to Indian central government as well as state government will be also required.

  • PDF

해상운송안보를 위한 선원 확보에 관한 연구 (Study on the Recruitment of Seafarers to Improve Military Sealift Capability in Korea)

  • 김성국;김여중
    • 해양환경안전학회지
    • /
    • 제24권1호
    • /
    • pp.18-28
    • /
    • 2018
  • 한국의 해군은 점증하는 대양해군의 역량강화에 따라 충분한 항해능력의 확보와 우수한 병력을 확보하는 것이 요청되고 있다. 그러나 병력자원의 확보측면에서는 최근 전체적인 인구감소 추세에 따라 병력의 효율적인 활용이 요구되고 있다. 이 연구에서는 가용자원의 확보를 위해 국방민간인력으로서 선원을 활용검토하고 미국의 해상운송사령부를 벤치마킹하였다. 검토결과 해상운송사령부를 설립하여 작전지원함정을 운영할 경우 해군의 전투능력이 확장이 가능하다. 게다가 기존에 구축된 해양대학 등 국가 교육시스템과 민간의 해기자원을 활용하는 것이 가능하다. 또한 승선근무예비역 제도와 지정국제선박을 보다 효율적으로 운영할 수 있을 것이다.

황해(黃海)와 동중국해어장(東中國海漁場)의 수산자원(水産資源) 보존관리(保存管理)에 관한 해양법문제(海洋法問題) (Law of the Sea Problems on Fishery Resources Conservation and Management in the Yellow Sea and East China Sea)

  • 이병기;최종화
    • 수산해양교육연구
    • /
    • 제6권1호
    • /
    • pp.77-91
    • /
    • 1994
  • The Yellow Sea and the East China Sea are the most important fishing grounds for the fishing industry of Korea, China and Japan which are major coastal states of these Seas. But the fishery resources in these fishing grounds are almost exhausted and also the sea region is seriously polluted. Accordingly an international joint countermeasure is necessary to recover the fishery resources and to keep the fishery a continuous industry. The authors inspected the existing fishery policies and international fishery relationship of the three coastal states, and suggested rational conservation and management regime of the fishery resources in these sea regions. 1. At present the legal status of the sea region beyond territorial sea is the high sea, for that reason the international cooperation is urgently needed to establish common regime for conservation and management of the fishery resources. 2. A series of scientific research on ecological system of fishery resources must be carried out in the sea region first of all for that purpose. 3. The existing Korea-Japanese Fishery Agreement and Sino-Japanese Fishery Agreement should be reformed to coincide with the new legal order of the UNLOS Convention, and the Sino-Korean Fishery Agreement should be concluded newly on the identical line. 4. As a conclusion, a joint conservation and management regime through a regional fishery organization or a individual conservation and management regime through the promulgation of exclusive economic zone by each state can be suggested to resolve the fishery resources conservation problem in the Yellow Sea and the East China Sea.

  • PDF

한국 패션기업의 해외시장 진입방식 연구: 해외직접투자 유형의 결정요인 분석을 중심으로 (Korean Fashion Firms' Entry into Foreign Markets: Empirical Analysis of Determinants of their Choice of Foreign Direct Investment Modes)

  • 김혜영;나원찬
    • 무역학회지
    • /
    • 제42권1호
    • /
    • pp.189-215
    • /
    • 2017
  • 최근 우리나라의 패션기업들의 국제화가 매우 활발한데도 불구하고 기업들의 주요한 해외진출 방식인 해외직접투자에 관한 국내 연구는 거의 이루어지지 않았다. 본 연구는 최근 해외직접 투자로 해외에 진출한 한국 패션기업들을 대상으로 그 투자방식의 선택을 결정하는 요인들을 분석한 것이다. 이를 위해 먼저 패션산업의 특성을 분석하고 패션기업들의 국제화와 해외진출에 관한 최근의 국내 연구를 고찰하였다. 이어 단독투자, 합작투자, M&A 등 3가지 대표적인 해외직접투자 방식 간 선택에 영향을 미치는 요인으로 모기업의 규모, 국제사업 경험, 국제전략 등 기업 내부 요인과 시장잠재력, 문화적 거리, 해외투자 위험 등 기업 외부 요인들을 선정하여 이들과 투자방식 간 선택에 관한 연구가설을 설정하였다. 가설 검증을 위해 해외시장에 진출한 100개 한국 패션기업들에 관한 2차 자료를 수집하여 다항 로지스틱 회귀분석을 실시하였고, 그 결과 문화적 거리변수를 제외한 5개의 요인들이 유의하게 영향을 미침을 밝혔다. 이 논문은 학문적으로 패션산업의 국제화에 관한 연구의 발전 및 실무적으로 기업의 해외진출 전략 수립에 긍정적으로 기여할 수 있을 것으로 기대한다.

  • PDF

수평으로 경사진 박스암거 위 콘크리트 포장 슬래브의 최적 줄눈위치 (Optimal Joint Position in Concrete Pavement Slab over Skewed Box Culvert)

  • 염우성;정호성;연우;손덕수;이재훈;정진훈
    • 한국도로학회논문집
    • /
    • 제15권5호
    • /
    • pp.47-55
    • /
    • 2013
  • PURPOSES : The purpose of this study is to investigate the optimal joint positions which can minimize distresses of concrete pavement containing box culvert with horizontally skewed angles. METHODS : The concrete pavement containing the box culvert with different skewed angles and soil cover depths was modeled by 3 dimensional finite element method. The contact boundary condition was used between concrete and soil structures in addition to the nonlinear material property of soil in the finite element model. A dynamic analysis was performed by applying the self weight of pavement, negative temperature gradient of slab, and moving vehicle load simultaneously. RESULTS : In case of zero skewed angle ($0^{\circ}$), the maximum tensile stress of slab was the lowest when the joint was positioned directly over side of box culvert. In case there was a skewed angle, the maximum tensile stress of slab was the lowest when the joint passed the intersection between side of the box culvert and longitudinal centerline of slab. The magnitude of the maximum tensile stress converged to a constant value regardless the joint position from 3m of soil cover depth at all of the horizontally skewed angles. CONCLUSIONS : More reasonable and accurate design of the concrete pavement containing the box culvert can be possible based on the research results.

중국의 독립보증에 관한 법률문제연구 (A Study on the Legal Issues on Chinese Security Law)

  • 송수련
    • 무역상무연구
    • /
    • 제71권
    • /
    • pp.85-105
    • /
    • 2016
  • Independent guarantee is new financial product developed in international commercial transaction. The nature of independent guarantee is an independent undertaking, which takes the form of documentary transaction. As long as the documents presented by the beneficiary are on their face complying with the terms and conditions of the guarantee, the guarantor is obliged to pay upon the complying presentation. Where parties choose to apply for issue of independent guarantee in international commercial transactions in China, Chinese court shall respect the autonomy of parties. If either the guarantor or the beneficiary is located outside of China, or the facts which cause the establishment, change or cancellation of independent guarantee relationship occurred outside of China, it shall be deemed as foreign related independent guarantee. If the interested parties requests for confirmation of the independence of foreign related independent guarantee, it shall be supported by Chinese court. However, parties dealing with Chinese domestic commercial transaction have not fully realized the severity of independent guarantee liability. The market credit is being cultivated and the financial innovation is being explored at present in China. In order to guard against the systematic and the regional financial risk, before relevant rules are promulgated, Chinese court shall not recognize the independence guarantees issued for the domestic commercial transaction, but treat it as joint liability surety.

  • PDF

예방의학의 발전을 위한 학술활동 (Future of Scientific Research on Preventive Medicine in Korea)

  • 임현술
    • Journal of Preventive Medicine and Public Health
    • /
    • 제39권2호
    • /
    • pp.105-109
    • /
    • 2006
  • The Korean Society of Preventive Medicine has undergone continuous development, after overcoming the difficult early years, in the 59 years since its establishment in 1947. It has repeatedly upgraded its quality and quantity of research with the first journal edition in 1968 and the continuous increase in publication numbers, scientific articles, joint research projects, intra-field exchanges and participation in various international scientific activities. In the future, we should gather a more extensive collection of opinions regarding the introduction of clinical preventive medicine specialists and prepare for the establishment of a training program for clinical specialists into a preventive medicine residency course. Moreover, we should raise interest in the importance of protecting individual information and maintaining medicine ethics. It's impossible to develop academic activities without cooperation. We need such cooperation with basic medical approaches across a wide range of fields. Furthermore, we should strengthen our cooperation with aspects of clinical and drug epidemiology in many fields including public health, statistics, and dietetics. Finally, we should raise the level of international cooperation with many countries, including North Korea, to prevent diseases and promote health. Preventive medicine is a science in which practice is as important as theory. We must aim to nurture preventive medicine specialists who practice in many areas of society with the goal of preventing diseases, promoting health, improving fertility, and securing healthy elderly life for individuals and the entire population. To this end, we will endeavor to promote both theoretical and practical components of academic development.

The Effects of Closed Kinetic Chain Exercise and Open Kinetic Chain Exercise on the Knee Position Sense in the Normal Adults

  • Lim, Ga-Rin;Kwon, Eun-Hwa;Kim, Dong-Sung;Kim, Jung-Hyo;Park, Jin;Choi, Eun-Hee;Kim, Sik-Hyun
    • 국제물리치료학회지
    • /
    • 제1권2호
    • /
    • pp.126-135
    • /
    • 2010
  • The purpose of this study is to investigate the effects of closed and open kinetic chain exercise for increasing knee joint function on the knee position sense in the normal adults. Thirty normal adults(male 15, female 15; mean age: $22.13{\pm}2.58$ years) were participated in this study into two groups, each with 15 people. The group I was trained that closed kinetic chain exercise on the knee joint and the group II was trained that open kinetic chain exercise on the knee joint. Exercise programs performed for 4 weeks, 3 times a week were using Shuttle 2000-1 closed kinetic chain exercise and Knee Extensor open kinetic chain exercise(HUR, Filand). The results of this study were as follows: 1) There were statistically significant decreasing of measuring error degree in $0-20^{\circ}$ were found between before and after training in closed kinetic chain exercise(p<.05). 2) There were statistically significant decreasing of measuring error degree in $21-40^{\circ}$ were found between before and after training in closed kinetic chain exercise(p<.05). 3) There were statistically significant decreasing of measuring error degree in $41-60^{\circ}$ were found between before and after training in closed kinetic chain exercise(p<.05). 4) There were statistically significant decreasing of measuring error degree in $0-20^{\circ}$ were found between before and after training in open kinetic chain exercise(p<.05). 5) There were statistically significant decreasing of measuring error degree in $21-40^{\circ}$ were found between before and after training in open kinetic chain exercise(p<.05). 6) There were statistically significant decreasing of measuring error degree in $41-60^{\circ}$ were found between before and after training in open kinetic chain exercise(p<.05). In conclusion, these results suggest that closed and open kinetic chain exercise has increased in the knee joint proprioception between before and after training. Especially, closed kinetic chain exercise could be more useful intervention than open kinetic chain exercise for increasing proprioceptive sense.

  • PDF