• 한국원자력학회:학술대회논문집
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• 한국원자력학회 2002년도 추계학술발표회요약집
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• pp.344.2-344
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• 2002

• 한국방사성폐기물학회:학술대회논문집
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• 한국방사성폐기물학회 2019년도 춘계학술논문요약집
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• pp.273-274
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• 2019

• 한국방사성폐기물학회:학술대회논문집
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• 한국방사성폐기물학회 2018년도 춘계학술논문요약집
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• pp.179-180
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• 2018

• Journal of Biosystems Engineering
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• 제37권1호
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• pp.51-57
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• 2012

Purpose: The compression strength of corrugated fiberboard containers used to package agricultural products rapidly decreases owing to various environmental factors encountered during the distribution of unitized products. The main factors affecting compression strength are moisture absorption, long-term top load, and fatigue caused by shock and vibration during transport. This study characterized the durability of corrugated fiberboard containers for packaging fruits and vegetables under simulated transportation conditions. Methods: Compression tests were done after corrugated fiberboard containers containing fruit were vibrated by an electro-dynamic vibration test system using the power spectral density of routes typically traveled to transport fruits and vegetables in South Korea. Results: To predict loss of compression strength owing to vibration fatigue, a multiple nonlinear regression equation ($r^2=0.9217$, $RMSE=0.6347$) was developed using three independent variables of initial container compression strength, namely top stacked weight, loading weight, and vibration time. To test the applicability of our model, we compared our experimental results with those obtained during a road test in which peaches were transported in corrugated containers. Conclusions: The comparison revealed a highly significant ($p{\leq}0.05$) relationship between the experimental and road-test results.

• 한국항만경제학회지
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• 제32권3호
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• pp.47-66
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• 2016

컨테이너 터미널은 한 번 건설되면 다른 장소로 이동하는 것이 불가능하므로, 컨테이너 터미널과 관련된 의사결정은 항만 관리에서 매우 중요한 부분을 차지한다. 컨테이너 터미널과 관련된 항만 관리의 초기 개념은 단순한 화물 연계 지점이었지만 운송 및 서비스의 중심지, 생산 및 유통 네트워크의 개념을 거치면서 진화하였고 최근에는 항만 관련 기업의 글로벌 운영으로 발전하였다. 본 연구는 글로벌 컨테이너 터미널 운영사에 대한 최신 자료를 수집하여 시장 집중도와 경영 현황에 대한 분석을 집중적으로 수행하고자 한다. 먼저 글로벌 컨테이너 터미널 운영사의 개념을 정립하고 글로벌 컨테이너 터미널 운영사의 일반적인 현황을 정리한다. 이어서 글로벌 컨테이너 터미널 운영사의 세계 시장에 대한 시장 집중도를 분석하고, 글로벌 컨테이너 터미널 운영사의 경영 현황을 수익성, 활동성, 안전성으로 나누어 분석한다. 마지막으로 글로벌 컨테이너 터미널 운영사의 경영 현황에 대한 포지셔닝 맵을 분석하여 군집화를 제안한다.

• 방사성폐기물학회지
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• 제21권2호
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• pp.255-269
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• 2023

Compared to operational wastes, nuclear power plant (NPP) decommissioning wastes are generated in larger quantities within a short time and include diverse types with a wider range of radiation characteristics. Currently used 200 L drums and IP-2 type transport containers are inefficient and restrictive in packaging and transporting decommissioning wastes. Therefore, new packaging and transport containers with greater size, loading weight, and shielding performance have been developed. When transporting radioactive materials, radiological safety should be assessed by reflecting parameters such as the type and quantity of the package, transport route, and transport environment. Thus far, safety evaluations of radioactive waste transport have mainly targeted operational wastes, that have less radioactivity and a smaller amount per transport than decommissioning wastes. Therefore, in this study, the possible radiation effects during the transport from NPP to disposal facilities were evaluated to reflect the characteristics of the newly developed containers and decommissioning wastes. According to the evaluation results, the exposure dose to transport workers, handling workers, and the public was lower than the domestic regulatory limit. In addition, all exposure dose results were confirmed, through sensitivity analysis, to satisfy the evaluation criteria even under circumstances when radioactive materials were released 100% from the container.

• 한국정보통신학회논문지
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• 제17권7호
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• pp.1544-1550
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• 2013

최근에는 미국에서 개발 및 관리하는 위성항법시스템과(GPS)와 러시아에서 운용하는 위성항법시스템(GLONASS)을 함께 수신하여 컨테이너 보안 장치에 활용함으로서 물류 효율성을 향상시키기 위한 방안이 연구되고 있다. 본 논문에서는 컨테이너화물 안전수송에 사용되는 컨테이너 위치 수신 안테나를 설계 및 제작하여 그 성능을 검증하였다. 제작된 안테나는 물류시스템에 운영할 수 있도록 물류 환경에 맞춰 광대역 원편파 특성과 GPS/GLONASS 듀얼 주파수 지원 가능하도록 성능을 최적화 하였다. 정재파비(VSWR) 2:1에서 대역폭은 26.1MHz이며 GPS(1575.42MHz)와 GLONASS(1602MHz)의 반사손실은 -9.54dB로 나왔다. 개발 완료한 안테나는 실제 한국간 러시아 물류 환경에 적용함으로써 GPS/GLONASS 신호가 국가 간 이동에도 정상적으로 수신됨을 시범 운영 테스트를 통해 성능 검증을 확인 하였다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2004년도 추계학술대회
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• pp.289-295
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• 2004

본 연구의 목적은 컨테이너터미널의 하역시스템 장비조합을 분석하는 것이다. 일반적으로 컨테이너터미널의 생산성은 안벽에서 컨테이너크레인의 생산성에 의해 평가되고 있으나 이송차량과 야드크레인과 같은 다른 장비도 있다. 그러므로 컨테이너 터미널에서 하역시스템의 최적장비조합을 추정할 수 있는 방법이 요구된다. 다양한 시뮬레이션 실험을 수행하고 생산성 향상을 위한 장비조합을 분석한다. 사례연구의 적용으로부터 장비조합에 따른 평균대기시간비율을 사용하여 절감효과를 설명하였다.

• 한국항만경제학회지
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• 제18권2호
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• pp.27-45
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• 2002

The continuing pace of technological change and the trend toward larger and faster ships is evident as shipping lines compete in seeking economies of scale in the global market and ports. become increasingly reliant on sophisticated equipment. Across the Asia and Pacific region some of the worlds most modern container ships are calling at an extensive network of mainline and feeder ports. This paper shows that during the period from 1999 to 2011, Asian container trade is expected to continue to increase more rapidly than the world average, i.e., 7.2 per cent per annum compared with the world average of 6.3 per cent. It is forecast that the total volumes of international containers handled at the ports in Asia and the Pacific will increase at an average growth rate of 7,2 per cent per annum. In order to handle the anticipated port container traffic in 2011, new container berths are required in nearly every country in the Asia and the Pacific region. This will entail very significant capital investment requirements. If countries in the UNESCAP region are to position their ports to meet the challenges of the next decade, there is an urgent need to implement more robust strategies to address important issues including prioritisation of port development projects, promotion of private sector participation in ports, emphasis on productivity and preparation for intermodal integration and logistics growth.

• Journal of Information Processing Systems
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• 제15권2호
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• pp.305-319
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• 2019

The prediction of the sum of container is very important in the field of container transport. Many influencing factors can affect the prediction results. These factors are usually composed of many variables, whose composition is often very complex. In this paper, we use gray relational analysis to set up a proper forecast index system for the prediction of the sum of containers in foreign trade. To address the issue of the low accuracy of the traditional prediction models and the problem of the difficulty of fully considering all the factors and other issues, this paper puts forward a prediction model which is combined with a back-propagation (BP) neural networks and the support vector machine (SVM). First, it gives the prediction with the data normalized by the BP neural network and generates a preliminary forecast data. Second, it employs SVM for the residual correction calculation for the results based on the preliminary data. The results of practical examples show that the overall relative error of the combined prediction model is no more than 1.5%, which is less than the relative error of the single prediction models. It is hoped that the research can provide a useful reference for the prediction of the sum of container and related studies.