• 한국항공운항학회:학술대회논문집
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• 2007.12a
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• pp.38-42
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• 2007

• 한국항공운항학회:학술대회논문집
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• 2007.06a
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• pp.52-56
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• 2007

• 한국항공운항학회:학술대회논문집
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• 2006.05a
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• pp.38-43
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• 2006

• Procedding of Korea Feed Ingredients Association Conference
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• v.4
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• pp.143-153
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• 2003

• Journal of the Korean Society for Aviation and Aeronautics
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• v.16 no.4
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• pp.35-40
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• 2008

There are many studies indicate that human is one of the major contributing factors to the aviation accident. To this end, the Human Factor of pilots and in flight operations has been a popular subject to be studied, however, not of the air traffic controllers. Recently, some States have started studying Human Errors in Air Traffic Control field, removal of the potential errors in advance and prevention of the similar errors. This study analyzed Human Errors in air traffic control in terms of LOSA of airlines, which has been actively studied. This study will contribute to safe Flight Operation and Air Traffic Control.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.29 no.2
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• pp.111-116
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• 2021

Normal Operation Safety Survey (NOSS) is a safety management tool used by air traffic control organizations to measure data related to threats and errors to proactively prevent accidents before they occur. NOSS was developed to be applied to the air traffic control field according to the concept of Line Operation Safety Audit (LOSA) conducted by airlines to reduce human errors in the cockpits. Safety management based on data is crucial for the prevention of control-related accidents, and the competency of observers for this is important for the successful implementation of NOSS. Based on LOSA implementation experiences and expert interviews, this paper introduces the international NOSS methods and discusses the key factors required for effective observation and the implementation methods and implications of NOSS observer training.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.31 no.2
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• pp.116-121
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• 2023

항공 사고는 첨단 항공 기술의 발달로 꾸준히 감소해 왔지만, 여전히 발생하고 있다. 조종사는 목적지 공항까지 안전하고 효율적으로 비행하기 위해 위협과 오류를 관리해야 한다. 조종사에게 영향을 미치는 위협은 환경적 위협과 항공사 위협으로 나눌 수 있으며, 환경사위협에는 객실 위협이 포함된다. 조종사와 객실 승무원은 정상적인 운항 중에는 협력이 필요하며, 비상시에는 안전한 비행을 위해 효과적인 협력이 절대적으로 필요하다. 조종사가 비행 중에 간섭이나 작업 흐름의 중단이 발생할 때 에러를 할 가능성이 높아진다. 항공사들은 안전 운항을 방해할 수 있는 객실위협의 종류를 적극적으로 식별하고 분석하여, 조종사들이 안전한 비행을 유지하기 위해서 위협을 관리하도록 절차 및 훈련을 개선해야 한다. 본 연구는 안전관리시스템(SMS)의 안전도구인 LOSA(Line Operation Safety Audit)를 기반으로 기내위협의 유형을 파악하고, 항공사들에게 조종실위협 관리를 체계적으로 개선하는 데 필요한 객실위협과 간섭에 대한 자료를 제공하고자 한다.

• 한국항공운항학회:학술대회논문집
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• 2006.05a
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• pp.14-18
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• 2006

• Journal of the Ergonomics Society of Korea
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• v.30 no.1
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• pp.29-39
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• 2011

Safety management paradigm which against human errors in aviation industry is now changing from the follow-up measures after accident in the past to systematic approach that a forecast the hazards and improve the working system of the group to prevent accidents. As human factors are based on the man's specific psychological traits, it takes much time and efforts to prepare the preventive measures. That's why aviation industry is interested in the accident-prevent measurements against human errors. In this thesis, therefore, we are going to introduce the efforts that aviation organizations have tried and recommend management systems and discuss the suggestive facts. At first, we discussed introduction of HFACS which is the systematic accidents-classification system related to human errors in the aviation organization and countermeasure in the aspects of management, technology/engineering, education training. We described about FOQA, LOSA, CRM/TEM, aviation safety information DB in the aspect of management, and explained safety technologies that prevent human errors or avoid technologically when emergency occurs in the aspect of technology/engineering. In the aspect of education training, we explained the application plan about safety programs(LOFT/Simulator use, CRM/TEM application etc).

• Journal of Korean Ophthalmic Optics Society
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• v.8 no.2
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• pp.77-83
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• 2003

To investigate the influence of the variation of conic coefficient of the front surface on the RMS SD(Root Mean Square Spot Diameter) in a back focal plane, we use programs which are Cove V and LOSA 2.0. We consider a spectacle lens with back vertex power of -4.00D, diameter of 70 mm, the front surface powers which are 2.00D, 4.00D, 6.00D, and 8.00D, and the indices which are $n_d$=1.498, 1.523, 1.586, and 1.660, respectively. The RMS SD in the back focal plane and the thickness of an aspherical tens having the optimized conic constant are smaller than those of a spherical lens. The RMS SD in the back focal plane decreases as the front surface power decreases. From these results, we determine the optimized conic constant to improve the optical image quality and decrease RMS SD in the back focal plane.