• 대한기관윤리심의기구협의회지
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• 제4권2호
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• pp.23-29
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• 2022

The goal of the military medicine is not as same as that of the civil medical practice, and consequently the characteristics of military biomedical researches have their own uniqueness. In front of the prerogative of national defense, some of the human rights ordinarily ensured in normal researches with human subjects are not to be fully guaranteed. The hierarchic system of the military would complicate the issue when the soldiers are enrolled as human subject for the research. Some researches could be classified as a military secret, therefore, the confidentiality issues need to be well addressed. Institutional Review Board and review procedure should be modified for the military purposes. So, it is necessary to establish the appropriate regulatory system for the military biomedical researches with human subject to manage the complicated issues involved in them.

• Clinical and Experimental Vaccine Research
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• 제12권4호
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• pp.337-345
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• 2023

Purpose: The global fight against the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic has led to widespread vaccination efforts, yet the optimal dosing schedule for SARS-CoV-2 vaccines remains a subject of ongoing research. This study aims to investigate the effectiveness of administering two booster doses as the third and fourth doses at different intervals to enhance vaccine protection. Materials and Methods: This study was conducted at a military regional hospital operated by the Ministry of National Defense in Taiwan. A cohort of vaccinated individuals was selected, and their vaccine potency was assessed at various time intervals following their initial vaccine administration. The study participants received booster doses as the third and fourth doses, with differing time intervals between them. The study monitored neutralizing antibody titers and other relevant parameters to assess vaccine efficacy. Results: Our findings revealed that the potency of the SARS-CoV-2 vaccine exhibited a significant decline 80 days after the initial vaccine administration. However, a longer interval of 175 days between booster injections resulted in significantly higher neutralizing antibody titers. The individuals who received the extended interval boosters exhibited a more robust immune response, suggesting that a vaccine schedule with a 175-day interval between injections may provide superior protection against SARS-CoV-2. Conclusion: This study underscores the importance of optimizing vaccine booster dosing schedules to maximize protection against SARS-CoV-2. The results indicate that a longer interval of 175 days between the third and fourth doses of the vaccine can significantly enhance the neutralizing antibody response, potentially offering improved protection against the virus. These findings have important implications for vaccine distribution and administration strategies in the ongoing battle against the SARS-CoV-2 pandemic. Further research and largescale trials are needed to confirm and extend these findings for broader public health implications.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2006년도 하계종합학술대회
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• pp.1013-1014
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• 2006

Mobilecomputer offers more fundamental role than role assistance enemy of modern technology equipment and new Information Technology can reconsider, and reconstruct creatively accuracy of physiological concept. That military register symptoms are developed of disease, before far before rehalibitation, offer possibility that can intervene in process that motive change of military register symptoms after rehalibitation. But, that many parameters become analysis target and mathematical settlement and equalization system of neted data of that is huge, same time collection of all datas can lift difficulty etc.. These main weakness puts in structural relation between elements that compose system. Therefore, dynamics research that time urea of systematic adjustment has selected method code Tuesday nerve dynamics enemy who groping of approach that become analysis point is proper and do with recycling bioelectricity signal. Nature model of do living body signal digital analysis chapter as research result could be developed and scientific foundation groping could apply HSS (Hardware-software system) by rehalibitation purpose. Special quality that is done radish form Tuesday of bioelectricity signal formation furthermore studied, and by the result, fundamental process of bodysignal in do structure circuit form of analog - digital water supply height modelling do can

• 대한의생명과학회지
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• 제30권1호
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• pp.24-31
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• 2024

Mercury is a chemical pollutant widely present in the environment. Humans are generally exposed to mercury in the form of organic Hg (methylmercury) through the consumption of seafood. Koreans enjoy eating fish therefore blood mercury concentration is usually higher than in developed countries. By investigating blood mercury concentration according to the frequency of seafood consumption and sociodemographic factors, we aimed to identify recent trends in blood mercury concentration in Korean adults. This study was conducted using KoNEHS cycle 4 (2018~2020) from the National Institute Environmental Research Survey. The geometric mean concentration of blood mercury of the subjects was 2.959 (±1.018) ㎍/L, which was significantly higher in men than in women. It was observed that as the frequency of fish and shellfish consumption increased, the blood mercury concentration increased. In adjusted logistic regression, fish consumption was associated with 36.7% increased risk of blood mercury levels [Odds ratio, 1.367; 95% confidence interval (CI), 1.246~1.500], and shellfish consumption was associated with 26.5% increased risk of blood mercury levels [Odds ratio, 1.265; 95% confidence interval (CI), 1.134~1.410]. Blood mercury concentration was also found to increase as the socioeconomic level increased. In conclusion, the geometric mean concentration of blood mercury was increased compared to the one in the 3rd KoNEHS (2015~2017) and seafood consumption and socioeconomic level were still significantly associated with increasing blood mercury concentration in Korea. Therefore, it is necessary to encourage healthy seafood consumption habits and conduct continuous monitoring considering various factors to reduce blood mercury levels.

• Advances in aircraft and spacecraft science
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• 제4권1호
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• pp.65-80
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• 2017

Small aircrafts, Unmanned Aerial Vehicles (UAVs), are used especially for military purposes. Because landing fields are limited in rural and hilly places, take-off or landing distances are very important. In order to achieve a short landing or take-off distance many parameters have to be considered, for instance the design of aircrafts. Hence this paper represents a better design to enlarge the use of fixed wing aircrafts. The document is based on a live and simulated experiments. The various components of designed aircraft are enhanced to create short take-off distance, greater lift and airflow without the need for proper runway area. Therefore, created aerodynamics of the remotely piloted aircraft made it possible to use fixed wing aircrafts in rural areas.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 제37회 하계학술대회 논문집 D
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• pp.2167-2168
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• 2006

Mobilecomputer of offers more fundamental role than role assistance enemy of modem technology equipment and new Information Technology can reconsider, and reconstruct creatively accuracy of physiological concept. That military register symptoms are developed of disease, before far before rehalibitation, of for possibility that can intervene in process that motive change of military register symptoms after rehalibitation. But, that many parameters become analysis target and mathematical settlement and equalization system of noted data of that is huge, same time collection of all datas can lift difficulty etc.. These main weakness puts in structural relation between elements that compose system. Therefore, dynamics research that time urea of systematic adjustment has selected method code Tuesday nerve dynamics enemy who groping of approach that become analysis point is proper and do with recycling bioelectricity signal. Nature model of do living body signal digital analysis chapter as research result could be developed and scientific foundation groping could apply HSS (Hardware-software system) by rehalibitation purpose. Special quality that isdone radish form Tuesday of bioelectricity signal formation furthermore studied, and by the result, fundamental process of bodysignal in do structure circuit form of analog - digital water supply height modelling do can.

• 융합신호처리학회논문지
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• 제21권2호
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• pp.92-100
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• 2020

현재 수중 촬영을 통해 물속이나 바다 속을 촬영하려는 수요는 매우 빠르게 늘어나고 있다. 방송용 수중 촬영, 레저 및 스포츠용, 군사 및 작전용 등 그 적용 범위 또한 빠르게 늘어나고 있다. 그중 특별히 우리는 선박 선저에 부착된 해양 생물들을 촬영하고 검사하기 위해 수중 드론에 사용 될 최적의 카메라를 선정한다. 3대의 카메라들을 성능적으로 비교하는데 수중 촬영이라는 특별한 상황에서 객관적 기준, 주관적 기준을 사용하여 비교 및 평가한다. 본 연구는 수중 촬영이라는 특이한 상황에서 카메라의 해상도와 같은 성능적 기준이 객관적 기준과 주관적 기준에도 부합하는지를 확인한다. 그리고 훌륭한 화질 제공에는 영상을 보정하는 필터 외에도 적절한 카메라 선정이 중요하다는 점을 보여준다. 이 연구 후에도 좀 더 다양한 카메라들을 이용한 연구를 통해서 수중 촬영용 카메라 화질 비교의 적절한 기준을 제시해 줄 수 있을 것이다.

• 대한의용생체공학회:의공학회지
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• 제38권3호
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• pp.129-136
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• 2017

외골격 로봇은 군사, 산업 및 의료와 같은 다양한 분야에서 사용되도록 개발된 기술이다. 외골격 로봇은 착용자의 움직임을 감지하여 작동한다. 외골격 로봇이 착용자의 일상적인 행동을 인지함으로써 착용자를 신속하게 보조하고 시스템을 효율적으로 활용할 수 있다. 본 연구에서는 피실험자로부터 얻은 운동학적 데이터를 통해 LDA, QDA, kNN을 활용하여 보행유형을 분류한다. 보행은 주로 일상생활에서 수행되는 일반보행과 계단보행을 선정하였다. 피실험자에게 7개의 IMUs 센서를 정해진 위치에 부착하여 운동학적 요소를 측정 하였다. 결과적으로, LDA는 78.42%, QDA는 86.16%, kNN는 k값에 따라 87.10% ~ 94.49%의 정확도로 분류하였다.

• 미래기술융합논문지
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• 제3권3호
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• pp.9-15
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• 2024

본 논문은 X-Band 애플리케이션에 활용하기 위한 4x4 마이크로스트립 어레이 안테나 최적화 설계와 제작에 대한 연구 결과를 제시하고 있다. 일반적으로 마이크로스트립 패치와 어레이 안테나 설계 파라미터는 기판의 종류와 패치의 사이즈를 조정함으로써 원하는 공진 주파수와 이득을 얻을 수 있다. 이 연구는 X-Band 공진 특성과 이득을 향상시키기 위해 최적의 기판 재료로 설계된 4x4 어레이 안테나 설계와 제작을 통한 특성 측정 결과를 소개하였다. 설계된 안테나의 크기는 10mm(W)x7.4mm(W)x0.79(H)mm 이다. 사용된 유전체 기판은 Rogers RO 4350B(ε_r=3.54)이며 안테나 급전 방식은 안테나의 사이즈를 줄이기 위해 인셋피드(Inset-fed) 방식이 적용되었다. 제안된 구조의 단일패치와 4x4 어레이 안테나는 설계 중심 주파수 10.3GHz에서 안정된 SWR(<1.5) 특성과 18.5dBi의 이득으로 예측되었다. 시뮬레이션 결과를 바탕으로 안테나가 제작되었고 측정 결과도 시뮬레이션 결과와 유사한 특성을 나타내는 것을 보았다. 본 연구에서 제안된 안테나는 군사, 위성 통신, 생물의학 분야를 포함한 X-Band 애플리케이션에 활용될 수 있다.