• 한국포장학회지
• /
• 제28권1호
• /
• pp.67-73
• /
• 2022

The food cold chain refers to a technology and distribution supply chain applied to maintain a constant temperature suitable for the product from production (harvest) to delivery to consumers. In particular, in Korea, the insulation material used in the food cold chain is mostly EPS (Expanded Polystyrene), which is used as a transport container for various food cold chains. However, according to the government's eco-friendly policy, companies charge environmental contributions to the use of EPS, but due to its low price and convenience of handling, it is still used as a container for delivering food. In this study, in order to measure the domestic delivery environment of general refrigerated foods, changes in impact, temperature, and humidity during transport of the EPS packaging system containing foods and ice pack refrigerants were measured. As a result, there were 2?3 sections in which a high impact force of 40 G or more was generated during transport. This can cause damage to the product and EPS container. The difference in temperature and humidity changes by parcel transport routes is more than 30%, so it is necessary to present accurate standards for the domestic cold chain distribution environment. As a result of microbial experiments. the transportation period had a dominant effect on the increase in total viable count and E. coli count.

• 한국항해학회지
• /
• 제25권2호
• /
• pp.183-193
• /
• 2001

1961년 설립된 COSCO는 현재 세계최대 선박회사의 하나로 성장해 왔으며 그의 컨테이너선대는 세계 7위로 부상되었다. 본 연구는 중국 경제체제 개혁에 따른 COSCO의 발전전략을 연구하였다.

• 한국항만경제학회지
• /
• 제23권4호
• /
• pp.71-90
• /
• 2007

군산항 물류 기 종점(O/D) 분석결과 군산항 컨테이너화물 유치를 위해 단기적인 방법으로서 내륙운송비절감으로 경쟁력이 있는 전북권 및 충청권의 최적권역 물동량을 확보하고, 대외적으로는 현재 군산항에서 가장 많은 화물을 처리하는 인근 중국 항만과의 교류활성화를 통하여 컨테이너화물을 유치해야 한다. 이를 위해 당장 시급한 것은 수요자들이 군산항을 이용하고자 하는데 느끼는 불편사항을 파악하여 개선함으로서 고객만족서비스를 제공하는 일이다. 이에 따라 본 연구는 군산항을 이용하고 있고 이용을 고려하고 있는 화주와 선사 그리고 물류업체들을 대상으로 실태조사를 실시하여 애로요인을 파악하였다. 실태조사에 나타난 군산항의 가장 큰 문제는 수심을 확보하여 정기선사들이 입.출항하는데 걸림돌이 없도록 하여야 하며, 항만운영, 항만관련제도정비, 항만인프라 등을 개선하여야 한다. 위와 같은 사항이 개선되어 군산항에 컨테이너화물 유치가 활발히 이루어지면 정기선사들이 기항하게 될 것이고, 신규항로가 개설되어 적기에 선적하게 되면 물류비절감에 따라 화주들은 군산항을 이용하게 되어 경쟁력이 확보될 것이다.

• 한국정밀공학회:학술대회논문집
• /
• 한국정밀공학회 2005년도 춘계학술대회 논문집
• /
• pp.1605-1608
• /
• 2005

This study was carried out to analyze the effect of machinery house location on the stability of high efficiency gantry crane which can improve the productivity of the container transportation wok by reducing cycle time. The wind load was evaluated according to 'Load Criteria of Building Structures' enacted by the ministry of construction & transportation. The uplift forces of high efficiency gantry crane under this wind load were calculated by analyzing reaction forces at each supporting point. And variation of reaction forces at each supporting point was analyzed according to machinery house location.

• 산업공학
• /
• 제14권3호
• /
• pp.255-262
• /
• 2001

Containerization of cargo transportation has been norm in the word wide maritime services, but containerized trades are typically unbalanced in terms of the number of inbound and outbound containers. Therefore it is critical for shipping companies to find operating policy such as the repositioning of empty containers or replenishing of short-term leasing containers from leasing companies to satisfy the freighter's demands of containers. This paper develops a simulation model using ARENA to establish shipping company's operational policy to relocate and replenish empty containers. Furthermore, this study proposes simple and heuristic empty container repositioning rules to minimize the relevant cost in terms of leasing, repositioning, and inventory holding costs.

• 한국항만경제학회지
• /
• 제21권3호
• /
• pp.61-81
• /
• 2005

China has increased 10 percent every year since 1978. In particular, development and growth of Chinese ports make a remarkable in that the marine and coastal transportation handles the 90 percent of export-import cargo. This growth is beginning to threaten Korea's ports which are striving to become the hub of Northeast Asia logistics. Furthermore, the hub strategy of Northeast Asia is closely related to transshipment cargo invitation. The results of documents research indicate Busan and Gwangyang ports play an important role as an intermediate stopover between China and America. The ways to achieve transshipment cargo invitation are the construction of transshipment system based on the supply chain between korea and china, the maximization of trading volumes creation, equipment of ports infrastructure, and the constructions of the rail, road, coastal transportation infrastructures.

• 한국농업기계학회:학술대회논문집
• /
• 한국농업기계학회 2003년도 동계 학술대회 논문집
• /
• pp.321-328
• /
• 2003

Fruits are subjected to complex dynamic stresses in the transportation environment. During a long journey form the production area to markets, there is always some degree of vibration present. Vibration inputs are transmitted from the vehicle through the packaging to the fruit. Inside, these cause sustained bouncing of fruits against each other and container wall. These steady state vibration input may cause serious fruit injury, and this damage is particularly severe whenever the fruit inside the package is free to bounce, and is vibrated at its resonant frequency. The determination of the resonant frequencies of the fruit may help the packaging designer to determine the proper packaging system providing adequate protection for the fruit, and to understand the complex interaction between the components of fruit when they relate to expected transportation vibration inputs. (omitted)

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
• /
• pp.3256-3263
• /
• 2011

항만구역에 있는 철도시설 중에서 비교적 규모화 된 항만철송장은 현재 부산항지역과 광양항지역에 배치되어 있다. 항만철송장은 철도물류의 시종 역할을 하는 주요한 기능이나 현재는 선로 배선 규모, 하치장 면적 등에 있어서 철도의 특성을 반영하지 못하여 비교적 활성화 되지 못한 상황이다. 또한, 활성화 되어 있더라도 이미 처리용량이 포화상태에 이르러 더 이상 철도수송물량을 증대하기는 어려운 상황으로 철도컨테이너 수송사업 활성화를 위해선 근본적으로 항만철송장 시설규모에 대한 재산정이 매우 필요한 상황이다. 본 연구에서는 이러한 철송장의 시설배치 상 문제점 해결을 위해서 최근 개장한 부산신항의 철송장을 중심으로 문제점을 분석하고 해결할 수 있는 방안에 대해 살펴보았다.

• 방사성폐기물학회지
• /
• 제6권1호
• /
• pp.11-15
• /
• 2008

고밀도폴리 에틸렌 고건전성용기에 담은 폐수지의 운반을 위해 원전 폐수지의 방사능 분석결과를 사용하여 운반물 등급 분류방법을 도출하였다. 원전 폐수지의 방사능 분석결과로부터 폐수지 내 핵종 존재비를 구하였고, 폐수지의 표면선량률로 핵종재고량을 평가하기 위해 MCNP 코드로 방사능대선량 환산인자를 모사하였다. 이로부터 고밀도폴리에틸렌 고건전성용기에 담은 폐수지에 대한 A형 운반물과 B형 운반물의 경계값은 1.19 TBq 이고 이를 표면선량으로 환산한 결과는 124.2 mSv/h임을 알 수 있었다.

• 한국포장학회지
• /
• 제23권2호
• /
• pp.97-101
• /
• 2017

Fruits are subjected to a variety of vibration stress during the transportation from a production area to markets. Vibration inputs are transmitted from the transporting vehicle through the packaged fruit. And the steady state vibration input may cause serious internal damage of fruit. Product quality of fruits declines by various factors while they are stored right after harvesting and among the substance in charge of post ripening action, ethylene ($C_2H_4$) biosynthesis increases fruits' respiration process after harvesting and decreases storage expectancy. Ethylene production of apples rapidly increases while storage duration becomes longer. This tendency is much clearer for the apples with vibration stress at input acceleration level. When there was no vibration stress, change in ethylene production level of apples are not very large during storage. Ethylene production rates inside the gas collecting container increased significantly ($p{\leq}0.05$) after 24 hours storage, particularly for apples with vibration stress ($0.7{\mu}l/kg{\cdot}hr$ (1st stack), $0.78{\mu}l/kg{\cdot}hr$ (2nd stack), $0.96{\mu}l/kg{\cdot}hr$ (3rd stack)); whereas less ethylene was produced in control apples ($0.18{\mu}l/kg{\cdot}hr$ during storage. Also ethylene production rates of apples according to the stack position were significantly different ($p{\leq}0.05$). The vibration stress clearly accelerated the degradation of apple quality during storage, resulting in increased ethylene production.