• 한국항공운항학회:학술대회논문집
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• 2015.11a
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• pp.212-223
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• 2015

This paper tries to provide and apply implications to line operation based on the analysis results by using empirical research methods. This paper has focused on the relationship among transformational leadership, job satisfaction, job absorption and loyalty. Following previous researches, the variables and hypothesis were defined and quantitatively measured in my research in order to analyze the effect of flight attendants' transformational leadership on their job satisfaction and loyalty. The managerial implications could be suggested as follows. Job absorption should be increased to improve flight attendants' loyalty to organization by increasing job satisfaction. Flight attendants' job satisfaction is related to transformational leadership which could be classified into Charisma, inspirational motivation and intellectual stimulus. Therefore flight attendants could be motivated by airline's controlling their charisma, inspirational motivation and intellectual stimulus. Solutions below are suggested to increase job satisfaction, absorption and loyalty.

• Journal of Korea Ship Safrty Technology Authority
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• s.31
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• pp.71-80
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• 2011

STCW-F협약은 어선에서 인적요소에 의한 해양사고예방을 위하여 IMO가 1995년에 채택한 협약으로 발효 요건은 15개국만 비준하면 발효되도록 한 협약이나 아직 발효되고 있지 않으나 최근에 비준국가의 급격한 증가로 발효가 임박하였다. 협약은 그 명칭에서 보는 바와 같이 어선 해기사의 자격증명과 훈련 및 당직근무의 기준에 관한 것이다. 자격증명은 무제한 수역에서 조업하는 길이 24미터 이상 항해어선의 당직항해사와 선장, 길이 45미터 이상 제한수역에서 조업하는 당직항해사 및 선장에 대한 자격증과 주기관 추진력 750킬로와트 이상 어선에 승무하는 일등기관사 및 기관장에 대한 자격증명 및 무선통신사의 자격증명이 있다. 훈련은 모든 어선원을 위한 기초안전훈련이 있으며 당직근무기준은 어선에서 항해당직을 유지하기 위하여 준수해야할 원칙이 있다. 또한 회의에서 채택한 결의서가 9개 있다. 특히 동 협약이 발효되면 비차별 조항에 따라 당사국은 항만국 통제를 시행할 수 있으므로 주요 연안국에서 입어 협상 등에서 자기 나라의 입지를 강화하기 위한 수단으로 사용될 소지도 있어 이에 대한 연구가 필요하다.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.29 no.10 s.241
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• pp.1430-1437
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• 2005

It is very important to achieve a high reproducibility in the ultrasonic measurement of bone mineral density. In this study, we examined number of sampling waveform, control of temperature, diameter of region of interest as factors to improve reproducibility. We decided the optimal number of waveforms to be converted to frequency domain as period of 1. We have minimized the effects of variable temperature and constrained generation of micro bubble by keeping temperature within a range of $32\pm0.5^{\circ}C$ with a precise temperature controlling algorithm. We also found the optimal diameter of region of interest to be 13mm. In this paper, we demonstrated the improved reproducibility by controlling various factors affecting the ultrasonic measurement of bone mineral density.

• Proceedings of the KIPE Conference
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• 2018.07a
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• pp.489-490
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• 2018

As the number of electric vehicles (EV) increases, there is an increasing interest in the post-vehicle application of the EV batteries. For the second use application of EV batteries, the state of health (SOH) at the end of automotive service has to be evaluated differently from the automotive perspective. It will be helpful to consider the driving conditions of EVs in understanding the performance deterioration trend of the battery. In this paper, we acquired the battery status information in real time during driving and compared the characteristics by the driving routes. The SOH from the BMS can be rescaled to percentage ratio to give a more general idea about the performance degradation.

• Journal of Fisheries and Marine Sciences Education
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• v.28 no.5
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• pp.1301-1307
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• 2016

The purpose of this study was to evaluate the effects of CPR education programs on seafarers and the retention period of the knowledge. The subjects of this study were 40 seafarers who took safety training courses at the Korea Institute of Maritime and Fisheries Technology. The seafarers were tested for their knowledge and attitude before, immediately after, 1 month after, and 3 months after the CPR education program. Data were analyzed for frequency, percentage, ${\chi}^2-test$, and t-test, and ANOVA was measured repeatedly using an SPSS statistical program. Knowledge, attitude, and performance ability were significantly increased post-education as compared to pre-education. Knowledge, attitude and performance ability were consistent when tested after 1 month, but knowledge, attitude, and performance ability were significantly decreased when tested three months later. Therefore, to maintain knowledge, attitude, and skills in performing CPR, appropriate renewal times are necessary in regular seafarers' safety training centers and sailing vessels.

• Journal of the Korean Society for Precision Engineering
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• v.21 no.11
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• pp.200-208
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• 2004

In ultrasonic bone densitometry, the positioning of measurement site is decisive in precision and reproducibility. In this study, automatic Region of Interest (ROI) detection algorithm is suggested and adopted the method using the local minimum value by ultrasonic image. The preprocess before the local minimum method extracts out the bone area and calculates the geometrical information of bone. The developed ROI detection algorithm was applied to the clinical test for the subject of 305 female patients in the range of 22-88 years old. As the results, the accuracy of the algorithm was shown to be 98.3％. It was also found that bone density parameter was significantly correlated with age(r=0.85, p<0.0001).

• Cross-Cultural Studies
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• v.23
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• pp.127-165
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• 2011

This paper focuses on the specificities and semantic meaning of Mikhail Bulgakov's metadrama White Guard and The Flight. The standard conception of metadrama is to purposefully break the dramatic illusion and make bare a playwright's self-consciousness of the theatrical art itself. With the use of the metadrama Bulgakov expressed the essentials of ugly reality, which he couldn't accept as a valuable truth. In this respect, Bulgakov's metadrama becomes at once a window, from which he views the external world in the theatrical vision, and a mirror, in which his political and existential stance as a playwright is reflected. In White Guard Bulgakov described the already theatricalized reality through several instances of 'play-within-play'. In The Flight, composed of eight pieces of dream, a life turned out to be a less solid and less firm reality than dream. Continuously demolishing the cognitive wall between reality and illusion, Bulgakov leads spectators to have a reflective view on the reality. Allowing more powerful demonstrativeness for a play-within-play than for a play-within-play, Bulgakov elevates a metadramatic technique to the level of thematic structure.

• Journal of radiological science and technology
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• v.41 no.6
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• pp.643-649
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• 2018

Recently, together with advancement of domestic aviation industry, overseas tourists using planes have been soared. This study aimed to investigate the risk of diseases for the passengers and flight attendants from the exposed cosmic radiation during the flight by domestic and international literature reviews, as follows. Airliners should develop the program to measure the actual radiation dose and prepare the portable devices for radiation measurement in flight to lower the accumulated dose of cosmic radiation by the attendants. Regulation should be prepared to check the exposed dose during the flight for the passengers by announcement of individual exposed radiation dose which has been provided only to the flight attendants. Passengers and flight attendants should recognize they are exposed to excessive cosmic radiation during the flight and civilians should be protected by the cosmic radiation when they use the flights, which should be prepared by the regulations.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.27 no.2
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• pp.70-78
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• 2019

CPDLC-DCL (Controller Pilot Data Link Communications-Departure Clearance) began in 2016 with 62 Towers in the United States. The application of this procedure is to utilize equipment different from existing ACARS PDCs or ACARS-DCLs. The purpose of this study is to provide information and understanding of CPDLC-DCL operation methods. Also, B747-8 aircraft considered operational cases related to departure procedures at U.S. airports. This procedure is currently not mandatory but will be mandatory in the future. The Flight Crew Procedures for CPDLC-DCL, as an appendix, will be a useful resource for B747-8 pilots.

• Korean journal of aerospace and environmental medicine
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• v.29 no.3
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• pp.93-95
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• 2019

Middle-ear barotrauma is a common problem reported by aircrew members and passengers. Studies have shown that 20~50% of passengers report ear complaints during the flight or after landing. Barotitis media is defined as an acute or chronic inflammation caused by a pressure differential between the tympanic cavity and the surrounding atmosphere. The Problems caused by otitis media or sinusitis of aircrew during landing and take-off can be a threat to aviation safety. Therefore, the aviation medical examiner should know about barotitis media of aircrews. In this paper, we aimed to learn what is barotitis media and how much it could affect aircrews. Also, we aimed to evaluate how barotitis media could make an impact on crews during flight, and how to manage these problems.