• 한국항공운항학회지
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• 제27권4호
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• pp.96-104
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• 2019

The response to climate change of international air transport industry might be initiated by ICAO's CORSIA (Carbon Offsetting and Reduction Scheme for International Aviation) which will impact on international airlines' flight operation behavior in the future. Though the airlines' efforts to reduce fuel consumption has been a major issue in economics of aviation industry, the improvement of fuel efficiency in flight operation will have additional impact on their profitability by introducing carbon emission cost. The fuel consumption in flight operation will be somewhat influenced by pilots' technical action for maneuvering aircraft during flight operation. This study will investigate pilots' behavior on decision for tactical aircraft control for mission flight. The data will be collected by the survey through sample pilots asking about their intention and perception on fuel savings during flight operations. The data will be analyzed by AHP process and the study will find out the elements and factors influencing pilots' behavior on technical decision of flight and their weights on fuel saving effects.

• 전기학회논문지
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• 제65권7호
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• pp.1115-1120
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• 2016

This paper presents the daily load forecasting for special days considering the rate of operation of industrial consumers. The authors analyzed the power consumption pattern for both the special and ordinary days according to the contract power classification of industrial consumers, and selected 400~600 specific consumers for which the rates of operation during special days are needed. Load forecasting for 2014 special days considering the rate of operation of industrial consumers showed a noticeable improvement on forecasting error of daily peak demand, which proved the effectiveness of the survey for the rates of operation during special days of industrial consumers.

• 수산해양기술연구
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• 제57권4호
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• pp.316-333
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• 2021

In order to understand basic data for improving the fishing system and fishing vessel structure in coastal improved stow net fishery, a questionnaire survey and on-site hearing were conducted from May 10 to June 11, 2019 to analyze opinions on the improvement of operation status and fishing vessel structure. The questionnaire survey consisted of ten questions on the operation status of coastal improved stow net fishery and six questions on the improvement of fishing vessel structure, and the results of each question were analyzed by the region, the captain's age, the captain's career and the age of fishing vessel. As a result of analyzing opinions on the operation status of the coastal improved stow net fishery, it was found that the average time required for casting net was 32.8 to 33.0 minutes and that the average time required for hauling net was 41.0 to 42.2 minutes which took 10 to 12 minutes more than for casting net. The most important work requiring improvement during fishing operation (the first priority) were 'hauling net operation,' 'readjustment and storage of fishing gear,' and 'fish handling' and the hardest factor in fishing management were in the order of 'reduction of catch,' 'labor shortage' and 'rising labor costs.' The most institutional improvement that is most needed in coastal improved stow net fishery was an 'using fine mesh nets.' Most of the respondent to the questions on the experience in hiring foreign crews was 'either hiring or willing to hire foreign crews,' and the average number of foreign crews employed was found to be 2.3 to 2.4 persons. The most important reason for hiring (or considering employment) foreign crews was 'high labor costs.' The degree of communication with foreign crews during fishing operation were 'moderate' or 'difficult to direct work.' The most important problem in hiring foreign crews (the first priority) was an 'illegal departure.' As the survey results on the opinion of structural improvement of coastal improved stow net fishing vessel, the degree of satisfaction with fishing vessel structure related to fishing operation was found to be somewhat unsatisfactory, with an average of 3.3 points on a five-point scale. The inconvenient structure of fishing vessel in possession (the first priority), the space needed most for the construction of new fishing vessel (the first priority) and the space considered important for the construction of new fishing vessel (the first prioprity) was a 'fish warehouse.' The most preferred equipment for the construction of new fishing vessel were 'engine operation monitoring' and 'navigation safety devices.' The average size (tonnage class), the average horse power and the average total length of fishing vessel for proper profit and safety fishing operation was between 13.8 and 14.0 tonnes, 808.3 to 819.5 H.P. and 23.4 to 23.5 meters, respectively. The results of the operation status of coastal improved stow net fishery and the requirement for improving the fishing vessel structure are expected to be provided as basic data for reference when we build or improve the fishing vessel.

• 한국항행학회논문지
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• 제24권4호
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• pp.273-279
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• 2020

한국형 SBAS (KASS)에서 기준국 사이트는 GPS/GEO 신호를 수집하고 감시하는 중요한 인프라 시설이다. SBAS 기준국은 상시 관측소보다 요구사항이 명확하고, 운영 단계에서 지속적인 유지보수가 필요하다. KASS 기준국 사이트 구축은 사이트 조사, 사이트 공사, 안테나 측지측량, 장비 설치 및 운영을 위한 준비가 필요하다. 사이트 조사는 사이트 가용 여부 및 시스템 성능 예측을 위한 단계이다. 기준국 사이트, 장비실 및 부대시설은 운영 기관이 사이트 요구 사항을 만족하도록 제공해야 한다. 기준국 안테나의 위치는 매우 중요한 정보로 측지측량을 통하여 정확도를 확보해야 한다. 정확한 위치의 안테나에서 측정된 측정치는 중앙처리국에 제공된다. 기준국의 정확한 위치는 향후 지속적인 위치 확인 및 업데이트를 수행해야한다. 기준국 사이트 구축이 완료 되면, 기준국 장비 설치 및 운영을 위한 업무를 수행한다. 본 논문에서는 7곳의 기준국 사이트의 구축 절차 및 결과를 제시하였다.

• 한국ITS학회 논문지
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• 제22권1호
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• pp.143-160
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• 2023

화재, 구조, 구급 등 재난상황에서 신속한 대응을 위해 긴급차량의 골든타임 확보가 중요하다. 본 연구에서는 긴급차량의 골든타임 확보와 운행 안전성 증대를 위하여 긴급차량 운행현황 분석에 기반한 긴급차량 우선신호 운영방안 연구를 수행하였다. 이를 위하여 본 연구에서는 긴급차량 출동 통계자료와 교통사고 통계를 이용하여 긴급차량 운영 현황을 분석하고 설문조사 분석을 통해 긴급차량 우선신호 도입 및 운영에 관한 세부기준을 제시하였다. 분석 결과, 긴급차량의 출동빈도와 교통사고가 점차적으로 증가하고 있으나, 긴급차량의 골든타임 확보율이 절반 수준인 것으로 나타나 이에 대한 개선방안 도출이 시급함을 확인하였다. 긴급차량 우선신호 도입에 관한 설문조사를 통해 우선신호 도입의 필요성에 대해 대다수의 시민이 공감하고 있고, 긴급차량 우선신호 제공 가능한 차량 범위와 신호 대기 허용 가능 시간에 대한 기준을 도출하였다. 이를 통해 긴급차량 우선신호 운영 전략과 세부 기준을 마련하는데 본 연구의 결과가 활용될 수 있으며, 긴급차량 우선신호의 신속한 확대를 통한 긴급차량 운행 안전성 개선과 골든타임 확보율 증대에 기여할 것으로 기대된다.

• 한국환경과학회지
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• 제14권5호
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• pp.457-461
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• 2005

The survey of user's satisfactory degree of location, plantings, facilities, operation, and management factors on national parks' camp sites was carried out. Many problems were analyzed and identified. This survey was for proposing the correct way to plan and draft for camping site after this. In addition to, the realization of environmental education through nature friendly recreation was aimed at. According to the result of the survey, the followings were suggested as necessities to improve the camp site. 1. Repair and replacement of insufficiently managed facilities should be aimed at. 2. Facilities for a handicapped person should be preferentially introduced. 3. Active management and publicity in low-demand season that practiced by developed countries should be carried out. Seasonal program for various age groups should be operated. 4. Surrounding tourist site, camp site, and trail should be organically connected by shuttle bus and other transports. A survey was carried out for the user satisfaction in the campsites of national parks. Based on this survey concerned with the location, planting, facilities, operation and management, the problems were identified and analysed to improve future design and plan of the campsites. This study aims for the realization of environmental education through nature friendly recreation. The following points are suggested as needed according to the survey result. 1. damaged facilities should be repaired or replaced. 2. introduction of the facilities for disabled should be prioritized. 3. consistent and active management and publicity work should be operated in the off-peak season. and the seasonal activity programs for the various age groups should be provided. 4. the site should be well connected with other surrounding campsites and tourist sites using the shuttle bus and other transport method.

• 한국항만경제학회지
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• 제20권1호
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• pp.21-42
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• 2004

This paper addresses the operation, problems, and development policy of Gwangyang Port, Korea. This paper aims to analyze the operation condition and problems of Gwangyang Port and suggest long-term policies for developing Gwangyang Port as a logistic hub in northeast period. It is made up of three main sections: the operation, problems, and forecast of freight volumes; analysis of operational results of Gwangyang Port; development strategies of Gwangyang Port as a Logistics Hub. This paper was mainly based on a review of current papers/reports, an analysis of secondary data, and questionnaire survey. The major development strategies identified consisted of expansion regular service sea-route, formation of inter-modal transportation system, strengthening of port sales for Gwangyang port's recognition, securing operation-profits by fixed cargo volume, and promotion of free tread zone.

• 한국식생활문화학회지
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• 제17권3호
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• pp.252-259
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• 2002

The purpose of this study examined important factor of performance on Contract Foodservice management. Three contract Foodservice companies were selected which were located in Seoul & kuonggi province. 300 units were chose. The questionnaire was composed of seven part. There were the operation of food management, the operation of menu, the operation of equipment and facilities management, the operation of solid waste and safety management, the operation of waiting time management. As a result of the survey B&I foodservice was listed higher than University foodservice as food hygiene, FIFO and food shelf life. University foodservice employees worked 4 hour longer than B&I foodservice employees, so turnover rate was higher than it. Comparing the number of feeding, B&I foodservice equipment and facilities scale was bigger than University foodservice equipment and facilities. The rate of solid waste on B&I foodservice was 11.468% and the rate of University foodservice was 16.23%, the waiting time of University foodservice was about 8mins longer than B&I foodservice.

• 공학교육연구
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• 제23권4호
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• pp.66-75
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• 2020

This study was conducted using the literature review and survey research to analyze the operational status and effectiveness of the single-track accredited program, which has been mandatory since 2016. The research targets to achieve the purpose of the study were the nationwide engineering education accreditation system operating colleges, departments, and engineering education innovation centers. Finally, 183 copies were collected from faculty members at 69 colleges and 554 copies at the department level. As a result of the survey, the college recognized more positively about the operation of the single-track accredited program, and more than 50% of respondents said that there were difficulties due to the operation of the system. The contents required were analyzed and presented. Based on this, the engineering education accreditation system, including the single-track accredited program, suggested the direction of support at the government level and the ABEEK level to better settle down in the field of engineering colleges.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2003년도 추계학술대회
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• pp.1-13
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• 2003

Domestic industry calamity rate did decrease in large numbers by many efforts of the safety and the health organizations. Nevertheless domestic industrial accident level is low yet among the OECD countries. Domestic small and medium enterprises is in trend that industrial accident is increased by deterioration of hardware, unpreparedness of safety equipments. But, Domestic small and medium enterprises' safety and health education had not been utilized so far effectively. This research groped efficient operation model of the safety and the health education through the survey about a solution for problems of education that is enforced in small and medium enterprises to three groups of workers and safety and health administrators and managers. Compared domestic safety and health educational system and advanced foreign educational system. And, analyze problems about domestic small and medium enterprise's safety and health education and presented a solution. Finally, presented efficient operation model of the safety and the health education suitable to domestic medium and small enterprises.