This study addresses the optimal design methodology for switching between active electronically scanned array (AESA) radar operating modes to easily select the necessary information to reduce pilots' cognitive load and physical workload in situations where diverse and complex information is continuously provided. This study presents a procedure for defining a hidden Markov chain model (HMM) for modeling operating mode changes based on time series data on the operating modes of the AESA radar used by pilots while performing mission scenarios with inherent uncertainty. Furthermore, based on a transition probability matrix (TPM) of the HMM, this study presents a mathematical programming model for proposing the optimal structural design of AESA radar operating modes considering the manipulation method of a hands on throttle-and-stick (HOTAS). Fighter pilots select and activate the menu key for an AESA radar operation mode by manipulating the HOTAS’s rotary and toggle controllers. Therefore, this study presents an optimization problem to propose the optimal structural design of the menu keys so that the pilot can easily change the menu keys to suit the operational environment. K

The paint removal of fighter jets is just as important as the painting, because perfect paint removal ensures the quality of the exterior painting on the aircraft. However, the current conditions for paint removal work of the ROKAF’s are poor. It is identified that the painting process currently implemented by the ROKAF is not only exposed to harmful compounds such as harmful dust and hexavalent chromium, but also consumes a lot of water. Thus, the introduction of advanced facility is considered. This study compares the fighter jets painting removal process currently applied by the Korean Air Force with the improved laser coating removal process of the US Air Force, and conducts an incremental analysis to perform economic analysis for the introduction of advanced facility. Four scenarios were envisioned on the premise of an increase in the number of fighters in the future, incremental analysis shows that laser coating removal method is advantageous in all scenarios. In addition, it is recommended that paint removal cycle keeps the current 12-year and the outsourcing amount to civilian depot is reduced.

The Korean Air-Force aircraft maintenance depot paints the exterior of various aircraft, including high-tech fighters. Aircraft exterior painting is a maintenance process for long-term life management by preventing damage to the aircraft surface due to corrosion. The de-painting process is essential to ensure the quality of aircraft exterior paints. However, because the Korean Air-Force’s de-painting process is currently done with sanding or Plastic Media Blasting (PMB) method, it is exposed to harmful dust and harmful compounds and consumes a lot of manpower. This study compares the de-painting process currently applied by the ROK Air-Force and the more improved process of the US Air Force, and performs economic analysis for the introduction of advanced equipment. It aims to provide information that can determine the optimal time to introduce new facilities through Cost-Volume-Profit (CVP) analysis. As a result of the analysis, it was confirmed that the sanding method had the most economical efficiency up to 2 units per year, the PMB method from 3 to 21 units, and the laser method from 22 units or more. In addition, in a situation where the amount of de-painting work is expected to increase significantly due to the increase in fighters in future, BEP analysis was conducted on the expansion of the existing PMB method and the introduction of a new laser method. As a result of the analysis, it was confirmed that it is more economical to introduce the laser method when the amount of work exceeds the PMB work capacity(18 units per year). The paper would helpful to improve the productivity and quality of the Korean Air Force Aircraft maintenance depot through timely changes of facilities in the workplace in preparation for expansion.

The purpose of this study was to verify the change in temperature·humidity·perspiration of fire suit when applying phased intensive exercises to fire fighter wearing fire suit. For this study, three male fire fighters took basic physical test and performed 10 minute phased intensive exercises -exercise intensity I (30%VO2max), exercise intensity II (45%VO2max), exercise intensity III (60%VO2max) based on maximum oxygen consumption (VO2max)- wearing fire suit (helmet, boots, air respirator) in treadmill and took a rest. The result of study shows that the temperature in the suit elevated during stabilization period after each exercise intensity, humidity elevated as exercise intensity increased, perspiration elevated as exercise intensity increased.

The purpose of this study was to verify the relationship between fire fighter's musculoskeletal disorder related observable symptom and their absence from disease and accident. Online questionnaire was distributed with a total of 7,673 fire fighters, and statistical analysis was conducted to the collected data. The result shows that on a one year basis, patients with musculoskeletal disorder related observable symptom felt symptom in sequence of back, shoulder, neck, knee. The result verified that 12.9% of absence of disease and 5.9% of absence of accident experienced these symptoms. Both absence from disease and absence from accident showed body part symptoms related to neck and shoulder. This study ascertained the relationship between fire fighters' absence and their musculoskeletal disorder related observable symptom. The author hopes this study to be used as a basis of precautionary program for absence management.

스트리트 파이터 2는 1990년대 대전 격투 게임(Fighting Game)이라는 장르에서 혁신적인 역 할을 하였던 게임이다. 이 게임이 흥행했던 요소는 여러 가지가 있지만, 그 중에서도 필자는 캐 릭터의 배경음악(Background Music)에 관하여 서술하고자한다. 사운드적인 측면에서 열두 명 의 캐릭터에 어울리는 주제음악(Theme Music)과, 각 캐릭터의 기술을 사용할 때 나오는 보이 스(Voice)가 탁월한 게임이다. 스트리트 파이터 2는 캐릭터의 체력에 따라 배경음악이 다른 양 상을 보이는데 이를 화성적으로 분석하고, 음악 심리학(Music Psychology)의 관점에서 연구해보 고자 한다.

화재 현장은 매우 높은 온도 및 습도가 요구되는 장소이며, 또한 소화활동 중에도 폭발 및 붕괴 등의 위험이 상존하는 장소이다. 이러한 극한 환경에서 근무하고 있는 소방대원에게 소방진압복은 생명을 담보하는 중요한 장비이며, 이 기초장비의 성능이 화재진압의 성공과 실패에 큰 영향을 미칠 수 있다. 그러나 유럽 및 미국의 소방진압복의 성능기준과 국내 소방진압복의 성능기준에 있어 일부 차이가 있다. 본 연구에서는 각 대륙별 소방진압복의 성능기준을 비교 검토하여 공통시험기준 및 비공통시험기준을 도출하여 소방대원들이 보다 안전하고 효율적으로 화재진압활동을 수행할 수 있도록 기존 국내 소방진압복의 시험기준에 화재현장의 환경조건에 필수적인 시험기준(안)을 선정하여 추후 시험기준의 개정 추진시 신규 시험기준(안)을 추가할 수 있는 이론적 배경을 제시하고자 한다.