• 한국대기환경학회지
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• 제33권6호
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• pp.570-582
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• 2017

In recent years, national and local government's air quality management and climate change adaptation policy has been significantly strengthened. The measures in the two policies may be in a relationship of trade-off or synergy to each other. Greenhouse gases and air pollutants are mostly emitted from the same sources of using considerable amounts of fossil fuels. Co-benefits, in which either measure has a positive effect on the other, may be maximized by reducing the social costs and by consolidating the objectives of the various policies. In this study, the co-benefits were examined by empirically analyzing the effects of air pollutants and greenhouse gas emission reduction, social cost, and cost effectiveness between the two policies. Of the total 80 projects, the next 12 projects generated co-benefits. They are 1) extend restriction area of solid fuel use, 2) expand subsidy of low-$NO_x$ burner, 3) supply hybrid-vehicles, 4) supply electric-vehicles, 5) supply hydrogen fuel cell vehicles, 6) engine retrofit, 7) scrappage of old car, 8) low emission zone, 9) transportation demand management, 10) supply land-based electric of ship, 11) switching anthracite to clean fuel in private sector, 12) expand regional combined-energy supply. The benefits of air pollutants and greenhouse gas-related measures were an annual average of KRW 2,705.4 billion. The social benefits of the transportation demand management were the highest at an annual average of KRW 890.7 billion, and followed by scrappage of old cars and expand regional combined-energy supply. When the social benefits and the annual investment budgets are compared, the cost effectiveness ratio is estimated to be about 3.8. Overall, the reduction of air pollutants caused by the air quality management policy of Gyeonggi-do resulted in an annual average of KRW 4,790.2 billion. In the point sources management sector, the added value of $CO_2$ reduction increased by 4.8% to KRW 1,062.8 billion, while the mobile sources management sector increased by 3.6% to KRW 3,414.1 billion. If social benefits from $CO_2$ reduction are added, the annual average will increase by 7.2% to KRW 5,135.4 billion. The urban and energy management sectors have shown that social benefits increase more than twice as much as the benefits of $CO_2$ reduction. This result implies that more intensive promotion of these measures are needed. This study has significance in that it presents the results of the empirical analysis of the co-benefits generated between the similar policies in the air quality management and the climate change policy which are currently being promoted in Gyeonggi-do. This study suggested that the method of analyzing the policy effect among the main policies in the climate atmospheric policy is established and the effectiveness and priority of the major policies can be evaluated through the policy correlation analysis based on the co-benefits. It is expected that it could be a basis for evaluation the efficiency of the climate change adaptation and air quality management policies implemented by the national and local governments in the future.

• 한국정보시스템학회지:정보시스템연구
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• 제14권3호
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• pp.63-70
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• 2005

Compared with land logistics and sea logistics, air logistics takes not only less transportation time, but also makes just-in-time delivery possible. Because of this, in spite of high freight rates, many shippers make good use of airlines. To cope with borderless competition in this global age, most shippers using air logistics want to receive diverse information including just-in-time cargo delivery and dangerous situation as well as convenience and speed in job handling. Nevertheless, most domestic forwarders, who perform many kinds of important businesses for air logistics, mainly put emphasis on demanding information from overseas partners through their business agreements, that is, focusing on horizontal integration, instead of sharing information or improving job performance among air logistics participants. As a result, it is almost impossible to satisfy the needs of shippers. Airline users want to remove the uncertainties over their cargo movement. And in time of emergency, they want to take immediate measures through speedy information sharing and decision-making. In order to satisfy shipper's needs, all the organizations participating in the air logistics supply chain-cargo senders, cargo receivers, forwarders, transporters, licensed customs brokers, airlines as well as foreign partners-have to set up a vertical cooperation system. For effective air logistics SCM, it is very important to remove overlapping jobs, strengthen the efficiency of job handling, and provide online monitoring on cargo information in order to support decision-making. To this end, this paper has applied the concept of RTE (Real Time Enterprise), a new business management system, which tries to maximize competitiveness by removing many hindrance factors on an ongoing basis in managing and fulfilling core business processes based on up-to-the-minute information. In order to realize RTE-based information system for air logistics SCM, this paper has analyzed the information required by business process and by air logistics participant, and suggested the method for information sharing, point of time for information input and output, and its means.

• 대한안전경영과학회지
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• 제7권1호
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• pp.45-56
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• 2005

The air bridge that connects an airplane with air terminal is important facilities that help people get in and out an airplane safely and conveniently. As the number of people who takes airplane has been increasing, an unexpected accident or a disorder on an air bridge can lead to the loss of passenger's lives or a great damage of airplane. This paper suggests a method to secure the safety of an air bridge.

• 한국지리정보학회지
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• 제22권1호
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• pp.154-167
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• 2019

기후변화에 따른 각종 환경문제가 발생하는 가운데, 도시에서는 폭염, 열대야와 같은 도시 열환경 문제가 심각해지고 있다. 한국은 찬공기 생성에 유리한 산림지역이 국토면적의 약 63%을 차지하고 있으며, 주요 산줄기인 정맥은 도시지역과 밀접하게 위치해 있기 때문에 찬공기를 활용하는 것은 도시 열환경 완화에 매우 효과적인 방안이 될 수 있다. 본 연구에서는 낙남정맥을 대상으로 정맥에 위치한 도시들의 바람길 활용 방안을 마련하기 위해 정맥의 찬공기 특성을 알아보고, 이를 바탕으로 낙남정맥의 찬공기 관리방안을 제안하였다. 또한, 낙남정맥에 위치한 진주시와 산청군을 대상으로 상세분석을 수행하여, 정맥에서 생성된 찬공기 흐름이 인근 도시 지역에 미치는 영향을 분석하고 이를 바탕으로 도시지역에서 찬공기를 활용하기 위한 관리방안을 제시하였다. 찬공기 특성 분석을 위해 독일에서 개발된 모형인 KALM(Kaltluftabflussmodell)을 활용하였으며, 야간 6시간 동안 생성되는 찬공기 흐름 및 찬공기층 높이를 파악하였다. 분석 결과, 시간이 경과함에 따라 정맥에서 생성된 찬공기 흐름이 뚜렷해지고, 찬공기층의 높이는 증가하였다. 찬공기 분석 결과를 바탕으로, 찬공기 흐름을 유지 및 확대할 수 있는 관리방안을 제안하였다. 예를 들어, 찬공기 생성이 활발한 산림지역 일대를 '찬공기 보전지역'으로 지정하고, 원활한 찬공기 흐름을 위해 관리가 필요한 지역을 '찬공기 관리지역'으로 지정하여 전략을 제시하였다. 본 연구의 결과는 낙남정맥에 위치한 도시지역의 쾌적한 열환경 조성을 위한 바람길 활용방안의 일환으로 낙남정맥의 체계적인 관리계획을 수립하는데 기초자료로 활용될 수 있을 것으로 기대한다.

• 한국컴퓨터정보학회논문지
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• 제23권11호
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• pp.137-142
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• 2018

The purpose of this study is to contribute to the improvement of indoor air quality management in dental clinic by investigating the level of indoor air quality recognition among dental clinic workers. The questionnaire survey was conducted for about 4 weeks from May 20 to June 20, 2018 in dental clinics located in Jeollanamdo area and 143 were used as the analysis data. The method of indoor air quality management in dental clinic was preferred to "natural ventilation" method and the number of natural ventilation was 1 to 2 times per day and the results of survey on indoor environment satisfaction showed that satisfaction level was lowest in noise and smell items. The types of subjective symptoms experienced by workers working at dental clinics are "cough", "eye burn", and "headache" and a survey on the degree of the relationship between subjective symptoms and indoor air quality showed that 94.4% (135) of respondents answered "very relevant" and "slightly related". As a result of multiple regression analysis, the variables affecting the indoor air quality satisfaction of the dental clinic staff were analyzed as the items such as lighting, noise, main work, number of patients, comparing indoor and outdoor air quality and among them, "comparing indoor and outdoor air quality" was analyzed as having a great influence. To improve the indoor air quality satisfaction of dental clinic worker adequate ventilation, designate the person responsible for the indoor air quality management and periodic measurement efforts will be necessary.

• 한국콘텐츠학회논문지
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• 제17권5호
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• pp.273-284
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• 2017

2015년에 발표된 실내공기질관리 기본계획은 민감계층을 고려하는 실내 환경보건 강화를 주요 추진 전략중 하나로 담고 있다. 사회복지생활시설은 장애인, 노인, 아동, 노숙인 등이 주 거주지로 삼으며 실내에서 머무는 시간이 매우 긴 공간이다. 그럼에도 불구하고 사회복지시설은 법정 실내공기질 관리 대상 기관이 아니다. 이에 본 연구는 사회복지생활시설 종사자들을 대상으로 실내공기질에 대한 태도와 관련 요인을 조사, 분석하였다. 실내공기질 관리의 필요성에 대해서 69.5%가 찬성하였고, 사회복지시설을 실내공기질 관리 대상 기관에 포함하는 것에 대해 80.9%가 찬성하였다. 응답자 중 90.8%가 본인이 종사하고 있는 시설의 실내공기질 분석을 받을 의향이 있다고 응답하였다. 사회복지시설의 실내공기질 관리 법정 기관화 찬성과 관련 있는 요인은 환경의식이었고, 본인이 종사하고 있는 실내공기질 분석 의사와 관련 있는 요인은 실내공기질 관리법 인지도였다. 분석결과를 기초로 사회복지시설 실내공기질 관리를 위한 환경부 다중이용시설등의 실내공기질 관리법 개정, 중앙 혹은 지방 정부의 비용부담, 사회복지시설 실내 공기질 관리에 대한 교육 및 연구의 필요성을 제안하였다.

• 한국환경과학회지
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• 제29권8호
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• pp.847-855
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• 2020

This study presented problems and improvements in the quality control of an air monitoring network, using Gyeongnam as an example. 1) The effective utilization rate of the air monitoring was 95%, which showed good management, but the maximum of 2% was indicated by zero or detection limit among measurement data. 2) In the equivalence evaluation of PM_2.5, the slope and intercept satisfy the evaluation criteria; however, 1% of the PM_2.5/PM₁₀ ratios were outliers. 3) All air monitoring stations meet the quality control standards; however, the management status is added to the quality inspection, management system is unified and the related budget is expanded, and systematic commission management is required.

• 한국국방경영분석학회지
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• 제2권1호
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• pp.177-184
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• 1976

As the organizational size of a military service or business increases and its management becomes complex, the success in its management depends less on static type of management but more on careful, dynamic type of management. In this thesis, an operations research technique is applied to the problems of determining optimal air traffic control rule and of optimal capacity of air base for a military air base. An airport runway is regarded as the service facility in a queueing mechanism, used by landing, low approach, and departing aircraft. The usual order of service gives priority different classes of aircraft such as landings, departures, and low approaches; here service disciplines are considered assigning priorities to different classes of aricraft grouped according to required runway time. Several such priority rules are compared by means of a steady-state queueing model with non-preemptive priorities. From the survey conducted for the thesis development, it was found that the flight pattern such as departure, law approach, and landing within a control zone, follows a Poisson distribution and the service time follows an Erlang distribution. In the problem of choosing the optimal air traffic control rule, the control rule of giving service priority to the aircraft with a minimum average waiting cost, regardless of flight patterns, was found to be the optimal one. Through a simulation with data collected at K-O O Air Base, the optimal take-off interval and the optimal capacity of aircraft to be employed were determined.

• 동력기계공학회지
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• 제17권5호
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• pp.64-68
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• 2013

One of the water management goals in PEM fuel cell is to avoid flooding and drying in the membrane, therefore the air humidification process is required. In order to increase water removal out of the membrane, the water management system may require the dehumidification process and it also requires a large space for application, moreover the process time is slow. In conformity with this fact, this present study proposes an advanced dynamic fuel cell water management which can be an intermittent optimization control using air flow rate instead of the air humidity as an variable in the optimization process. The results of this study have shown that the membrane flooding and drying can be avoided after being assisted by air velocity controlling method.

• 한국항공운항학회지
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• 제29권4호
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• pp.124-133
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• 2021

The airline industry has been growing steadily since 2016 with more than 100 million air passengers, renewing the largest number of air passengers every year. Increasing air demand leads to an increase in air traffic in limited airspace, increasing the likelihood of accidents between aircraft. Due to the massive human and material damage caused by a single mistake, aviation safety is being heavily focused around the world to efficiently use limited airspace. Studies related to various human factors are underway as most of the aviation accidents are found to be caused by human factors, but research on human factors by controllers is insufficient while they are active in terms of control and operation. Given that 82% of air accidents caused by controllers are caused by human error, the importance of management of human error and changes in perception are urgently needed. This study aims to understand the seriousness of the controller's human error by analyzing the accident cases caused by the controller's human error using TEM to identify threats and errors and derive common human factors.