• 한국전자파학회논문지
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• 제24권12호
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• pp.1140-1147
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• 2013

본 논문에서는 인천공항 화물터미널 지역에서에서 항공정보통신 무선 채널의 패스 로스 모델에 관해 연구하였다. 인천공항는 송신소 사이트가 신불 및 왕산에 위치하였다. 신불 및 왕산에서 발사된 전파 상태를 분석하기 위해 각 사이트에서 동일한 송신기 및 파워를 이용해 전파를 방사하고 화물터미널에서 측정을 수행하였다. 송신사이트에서 방사된 파워는 측정의 정확성을 위해 변조 신호를 제거한 캐리어 파워를 송신하였다. 측정 환경은 송신소와 안테나를 직결된 상태에서 전파를 방사한다. 수신은 전파 측정을 위해 수신기를 장착한 이동 차량을 이용하여 화물터미널 지역에서 전파 측정을 수행하였다. 화물터미널에서 측정된 데이터를 가지고 패스 로스 계수 및 실험적인 패스 로스 식은 기본적인 패스 로스 모델 및 하타 모델 등을 이용하여 추출하였다. 화물터미널 지역에서 추출된 패스 로스 계수는 신불에서 방사된 패스 로스는 3.67 이고 왕산에서 방사된 패스로스 3.39이었다. 예측 에러의 편차는 각각 14.42 및 10.38이었다. 실험 결과에서는 추출된 패스 로스 계수와 다른 전파 패스모델과 비교하였다. 이러한 결과는 항공정보통신 사이트 최적 위치 선정 및 항공정보통신 서비스 평가에 도움이 될 것이다.

• 한국항만학회지
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• 제15권1호
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• pp.27-35
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• 2001

In order to deal with the increase of container cargo traffic volume more effectively, the ministry of maritime affairs & fisheries has a long-term plan to develop Gaduk Island. According to the plan, the New Port will handle 4,600,00TEUs annually. The completion of the project will enable the port of Busan to perform as a hub port in the Asia Pacific era of the year 2000 with sufficient port facilities, and this will lead to a new era of oceanic Korea. With the advent of the Pacific Rim Era of the year 2000, Busan metropolis has set a strategic development plan to establish the area as the center of logistics in the noreast Asian region as well as to become the stronghold of economic activity in Korea's southeast region. To this end, industries that will open the doors to a marine era and a new industrial complex focused on logistics are planned in the West Busan area where Gimhae International Airport and the Busan New Port meet. This paper aims to find out the functional relation and complement between the Busan New Port Distri-Park handing container cargo traffic volume and the West Busan Logistics Pa가 handling an air cargo and railroad goods. Especially, paper aims to suggest the West Busan Logistics Park as the efficient management of the container cargo traffic volume due to the Development Plan of the Busan New Port.

• 한국항행학회논문지
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• 제27권3호
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• pp.255-261
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• 2023

본 연구는 민간 회전익항공기 사고의 80% 이상이 조종과실이라는 사실과는 대조적으로, 모든 국내 회전익항공기 조종사들은 군에서 많은 경험을 가지고 민간 분야에서 종사한다는 점에서 어떤 특정한 환경적 요인이 있을 것이라는 명제를 바탕으로 연구를 시작하게 되었다. 우리는 지난 10년간 총 14건의 민간 회전익 항공기 사고가 있었다. 그중 9건 (64%)이 항공기 외부에 인양물을 매달은 채로 사고가 발생했다는 사실과 국내 외부인양물에 대한 구체적인 훈련 규정이 없다는 점을 반영하여, 우선 조종사 외부 인양물 훈련에 대한 국내외 훈련 및 자격 부여 과정을 비교 분석하였다. 그리고 조종사 훈련과 관련된 미국 연방항공청 (FAA) 파트 133 규정인 회전익 항공기(헬리콥터)를 이용한 외부화물 운송관련 법률과 국내 법률을 비교 분석하여 시사점을 도출하여 국내 상황을 적합한 외부인양물에 대한 조종사 훈련과 자격부여에 대한 대안을 제시하고자 하였다.

• 한국항공운항학회지
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• 제5권1호
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• pp.51-63
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• 1997

Generally, air freight forecasting model used to major factor GNP(GDP), Yield, Exchange rate, as its independent variables. We studied about the factors that affect to Air Freight in Korea, and we found six affective variables. Those are GNP, Exchange rate, Flight routes, Flight numbers, Sum of dollars Export and import. To find the relationship between the Air Freight and GNP, Exchange rate, Flight routes, Flight numbers, Sum of dollars Export and import we used regression analysis. Through the regression analysis, we found some problems in the model. There are collieneraities between the variables, so we took the variables selection model to choose the best affective variables of air cargo. We have defined the the Korean air freight forecasting model with two variables and forecast far the $1996{\sim}2010$ period were made by using this model.

• 항공우주정책ㆍ법학회지
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• 제4권
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• pp.65-85
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• 1992

The air waybill is supposed to be made out by the consignor. If the carrier makes it out, he is deemed, subject to proof to the contrary, to have done so on behalf of the consignor. The air waybill shall be made out in three original parts. The first part shall be marked "for the carrier", and shall be signed by the consignor. The second part shall be marked "for the consignee", it shall be signed by the consignor and by the carrier and shall accompany the goods. The third part shall be signed by the carrier and handed by him to the consignor, after the goods have been accepted. According to the original Warsow Convention article 8, the air waybill must contain 17 particulars or items. However, the Hague Protocol reduced to three the number of particulars required to appear on the air waybill. Only one item is obligatory, namely, the notice that the carriage is subject to the rules of the Warsaw Convention. The absence of the air waybill entails unlimited liability of the carrier because it deprives him of the right to avail himself of the provisions of the Warsaw Convention which exclude or limit his liability. The consignor shall be liable for all damages suffered by the carrier or any other person by reason of the irregularity, incorrectness or incompleteness of the particulars and statements in the air waybill. Although the contract of the carriage of goods by air is not a formal contract, the document of carriage is issued. The issue of air wayhill is not essential for the existence or validity of the contract, but serves merely as a means of proof. The Hague Protocol has lessened the consequences of the carrier's neglect to faithfully accomplish the required formalities. Henceforth, these formalities no longer constitute legal obligations. The air waybill is the consignment note used for the carriage of goods by air. It is often called an air consignment note and is not a document of title or transferable/negotiable instrument. It is basically a receipt for the goods for despatch and is prima facie evidence of the conditions of carriage. Each of the original parts of the air waybill has evidential value and possession of his part is a condition for the exercise by the consignor or cosignee of his rights under the contract of carriage. Oveall, it is an usage that under a documentary letter of credit, the consignee on the air waybill is the opening bank of the letter of credit, and the notify party is the importer who applied for the letter of credit. In Korea there is an usage as to process of cargo delivery in air transportation as follows: The carrier carries the cargo into the bonded area of the airport and gives both the notice of arrival of the cargo and the consignee's air waybill to the notify party who is the importer. Then the notify party obtains the Letter of Guarantee from the opening bank in exchange for reimbursing the amount of the letter of credit or tendering the security therefor to the opening bank. The notify party then presents this document to the customs authorities for the process of customs clearance. The opening bank becomes a consignee only to ensure repayment of the funds it has expended, and the only interest of the opening bank as consignee is the reimbursement of the money paid to the exporter under the documentary letter of credit. Just as the bill of lading in maritime law, the air waybill has always been considered negotiable although the Warsaw Convention does not emphasize this aspect of negotiability. However, the Hague Protocol article 4 corrected the situation by stating that "nothing in this Convention prevents the issue of a negotiable air waybill." This provision officially recognizes that the air waybill must meet the needs of the present day business circles by being a negotiable instrument. Meanwhile, Montreal Additional Protocol no. 4 has brought important changes. Registration by computer is acceptable and the parties to the contract of carriage are allowed to replace the air waybill with a receipt for the goods. In conclusion, as the Warsaw Convention has not details of provisions relating to the issuing of the negotiable air waybill, it is hoped that there should be supplement to the Warsaw Convention and establishment of international commercial usage with regard to the negotiable air waybill.

• 한국산학기술학회논문지
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• 제21권9호
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• pp.32-38
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• 2020

화차 제동은 공기 제동관의 압력변화를 이용해 제동 체결과 완해를 반복적으로 작동하여 수행한다. 화차 공기 제동 완해 불량은 기관사의 제동완해 취급 후에 제동 제어밸브의 오작동으로 인해 부분적인 제동체결상태를 의미한다. 이 현상은 화차 주행 동안 차륜 찰상과 열손상을 발생시킴으로서, 차륜파손 또는 열차 탈선사고를 일으킨다. 따라서 화차의 운행 지연 및 사고방지를 위해서는 공기제동 완해불량을 방지하는 체계적인 연구가 중요하다. 이를 해결하기 위하여 본 연구에서는 철도운영기관의 제작과 기능요구사항을 고려하여 완해불량 방지밸브를 개발하였다. 또한 본 밸브의 내구성 시험은 화차제동성능 시뮬레이터 성능시험기를 이용하였으며, 이의 작동성능은 반복적인 제동과 완해불량 조건하에 공압이력으로부터 평가하였다. 본 밸브의 보증수명은 화차 주행동안 제동횟수를 고려하여 무고장 시험기법에 준하여 12개 시제품에 대하여 총 16만회 성능시험을 수행하였다. 내구성 시험동안 본 밸브의 공압 입력 시간과 출력시간 및 출력속도의 차이는 거의 일정하였다. 본 밸브의 보증수명은 신뢰수준 95%에서 59,860회이며, 화차 대차에 본 밸브를 설치할 경우에 요구조건인 4년간 고장없이 운용될 수 있음을 의미한다.

• 대한교통학회지
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• 제26권3호
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• pp.7-16
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• 2008

공항의 출입국 절차 간소화는 안전하고 신속한 여객과 화물 처리 측면에서 매우 중요하다. 신속한 출입국 절차는 공항 서비스 수준 및 효율성을 판가름하는 중요한 요인으로 작용하고 있다. 이에 따라 선진국들은 출입국 절차를 간소화하는 새로운 출입국 제도를 도입해 이용자의 만족도 및 공항 효율성을 높이고 있다. 한국의 국제공항들은 선진 출입국 절차제도 및 시스템이 활발히 추진되지 않고 있다. 본 연구는 공항에서 항공기, 승무원, 여객, 화물 및 우편물의 이동시 불필요한 장애나 지연 없이 그 흐름을 용이하게 하기 위한 국내 공항의 출입국 절차 개선을 위한 방향 및 개선과제를 제시하고 자료포락분석기법(Data Envelopment Analysis, DEA)을 이용해 개선과제의 효율적인 추진을 위한 우선순위를 도출하였다. 이 연구에서는 출입국 절차 간소화를 위해 시설 및 시스템 구축에 대한 R&D의 필요성이 높은 것으로 나타났다. 또한 출입국 절차 관련 성과지표와 측정체계의 필요성을 제시하였다.

• 한국항만경제학회:학술대회논문집
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• 한국항만경제학회 2006년도 국제학술대회
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• pp.103-124
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• 2006

This paper is concerned with a comparative study on the economic effects upon the Korean economy by transport mode, ie road, rail, air, and coastal and inland water transportation between 1990 and 2000, using input-output analysis. The economic effects consist of backward and forward linkage effects, production inducing and import-inducing effects. The data employed for this study come from the Bank of Korea database for Input-Output structure of the Korean economy. The major findings in this study are, among others:(1) the power of dispersion(=backward linkage effect) of coastal and inland water transportation sector is the highest among the four transport sectors, while road cargo transport mode showed the highest the degree of sensitivity (=forward linkage effect); (2) rail cargo transport recorded the highest production inducing effects; and (3) air transport mode achieved the highest ranking in the import-inducing effects.

• 한국항공운항학회지
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• 제29권4호
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• pp.1-20
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• 2021

Due to the recent rapid increase in passenger and cargo air transport demand, the capacity of Jeju International Airport has been approaching its limit. Even though in COVID-19 crisis which has started from Nov 2019, Jeju International Airport still suffers from strong demand in terms of air passenger and cargo transportation. However, it is an undeniable fact that the delay has also increased in Jeju International Airport. In this study, we analyze the correlation between weather and delayed departure operation based on both datum collected from the historical airline operation information and aviation weather statistics of Jeju International Airport. Adopting machine learning techniques, we then analyze weather condition Jeju International Airport and construct a delay prediction model. The model presented in this study is expected to play a useful role to predict aircraft departure delay and contribute to enhance aircraft operation efficiency and punctuality in the Jeju International Airport.

• 한국항공운항학회지
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• 제30권1호
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• pp.1-11
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• 2022

The capacity of Jeju International Airport has reached its limit due to a surge in air traffic demand such as passengers and cargo and the continuous expansion of Low Cost Carriers (LCC). Despite COVID-19 that has began in November 2019, Jeju International Airport still has continuous demand in terms of passenger and cargo transportation. As a result, it is undeniable that the delay rate also unexpectedly increased as the air traffic volume at Jeju International Airport continued to increase. In this study, the correlation between Turnaround Time and delay rates of national airlines is analyzed based on past flight data at Jeju International Airport, and the cumulative delay time trend for sampled airlines is compared with Turnaround Time. Through this study, it is expected to contribute to securing aircraft operation efficiency and on-time by analyzing delays related to Turnaround Time at Jeju International Airport.