• 한국음향학회지
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• 제34권1호
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• pp.60-65
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• 2015

본 논문은 다수의 마이크로폰에서 측정된 총소리를 이용하여 총구와 마이크로폰 어레이 중심의 거리를 추정하는 방법을 개선하는 것이다. 은폐된 적의 위치인 총구와 마이크로폰 어레이 사이의 거리 추정은 군사적 목적 달성을 위하여 매우 중요하다. 총소리는 총구에서 추진가스의 팽창에 의해 발생하는 폭발음인 총구 폭풍파와 초음속으로 비행하는 탄환의 공기 파열음인 탄환 충격파로 구성된다. 현재까지 알려진 방법은 두 신호의 입사각과 도달 시간차를 이용하여 저격수의 거리를 추정한다. 그러나 이러한 기존 거리 추정 방법은 두 신호의 측정 입사각이 같은 경우에 거리추정이 불가능한 단점이 있다. 이러한 한계점을 해결하기 위한 방법으로써 탄도 수직거리 증가에 따른 탄환 충격파의 특징 변화를 이용한 새로운 거리를 추정 방법을 제안하였으며 이를 사격 실험을 통해 증명하였다.

• Journal of Korean Neurosurgical Society
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• 제51권3호
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• pp.164-166
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• 2012

Penetrating injuries to the upper cervical spine resulting from gunshots are rare in South Korea due to restrictions of gun use. Moreover, gunshot wounds to the upper cervical spine without neurological deficits occur infrequently because of the anatomic location and surrounding essential structures. We present an uncommon case involving the surgical removal of a bullet located in the anterior arch of first cervical vertebra (C1) via a transoral approach without neurological complications or subsequent mechanical instability.

• Journal of Korean Neurosurgical Society
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• 제55권4호
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• pp.222-225
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• 2014

Traumatic intracranial aneurysms (TICAs) are rare and are associated with high rates of morbidity and mortality. TICAs usually result from head injuries caused by traffic accidents, industrial accidents, or gunshots. We report a traumatic aneurysm of the callosomarginal artery-cortical artery junction arising from a penetrating injury by scissors. A 51-year-old woman was admitted to our hospital after suffering a penetrating injury caused by scissors. Computed tomography (CT) and CT-angiography demonstrated a right orbital roof fracture, subarachnoid hemorrhage, frontal lobe hemorrhage, intraventricular hemorrhage, and a traumatic aneurysm of the right callosomarginal artery-cortical artery junction. We trapped the traumatic aneurysm and repositioned a galeal flap. Postoperative CT showed a small infarction in the left frontal lobe. Follow-up angiography two months later showed no residual aneurysm. We suggest that an aggressive surgical intervention be performed whenever TICA is diagnosed.

• 한국군사과학기술학회지
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• 제10권2호
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• pp.69-75
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• 2007

So far, anti-piercing depths for concrete slabs have been determined using Conventional Weapon's Effects Program(CONWEP) that was developed by the U. S. Army's Corps of Engineering. However, it has been suggested by a number of field officers that the values computed by CONWEP tend to be too high for protective facilities used in small military units and that indiscriminate application of these values to such facilities would lead to uneconomical penetration-proof designs. In this study, gunshots onto RC slabs were carried out using KM80 bullets in order to measure the piercing depths. The observed depths and the depths offered by the CONWEP system differed greatly from each other by up to 119 centimeters. Based on the depth values obtained through this experiment, we have proposed a new equation to calculate effective anti-piercing depths for RC slabs against small caliber bullets.

• 한국지하수토양환경학회지:지하수토양환경
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• 제19권6호
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• pp.1-5
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• 2014

The following research was initiated in order to compare the relationship between the amount of gunfire shot and its resulting heavy metal pollution rate. The research was conducted at two firing ranges located inside a military unit stationed in the rear strategical area, where one full distance firing range is used by soldiers in active service, and the other is used by recruits and reserves. The heavy metal pollution rate was measured also on water sample collected from the target zone while raining. Based on values such as the real amount of gunshot fired, amount of heavy metal in the soil of the target zone, and the degree of heavy metal pollution for each firing range, the research showed that although pollution rate was higher when more gunshots were fired, there was no close correlation between the two. The water samples showed that this might result from the soils containing heavy metals eroded and transported by rain due to the target zone having no vegetation.

• 복식
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• 제63권4호
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• pp.158-167
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• 2013

The cotton fabric armour for lower class soldiers can be found from the historical records of the mid-Joseon Korea. And the records show that the form and the structure of the armour was modified in the late 19th century in order to provide better protection from gunshots for the soldiers in the midst of the invasions from the West. This is a survey and research of the only artifact of the cotton fabric armour remaining in Korea - for its form, dimensions, and design. Using the historical records as reference, we can confirm the structure and characteristics of the cotton fabric armour of the Joseon period. This cotton fabric armour, preserved in National Museum of Korea, is a vest-type armour made of 30 layers of cotton. On the right shoulder, there is a button for tying knots and strings were tied under both armpits. On the surface of the cotton fabric armour there were some characters and patterns stamped in black. Presently, this artifact in Korea is the only specimen relic of its sort, but there are some other related relics in foreign countries including helmets and belts. Continuous researches would help extend the scope of armour study beyond the traditional researches that only focuses on the armours of the officials, thus helping us to understand the military costumes in traditional Korea.

• Clinics in Shoulder and Elbow
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• 제15권1호
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• pp.37-42
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• 2012

목적: 총상에 의한 상완골 골절 증례를 통해 치료의 원칙에 대하여 고찰한다. 대상 및 방법: 28세 남자가 좌측 상완부의 총상으로 수상 후 5일에 응급실로 내원하였다. 상지의 신경 및 혈관 손상의 징후 및 타장기의 손상은 없었으며, 생체징후는 안정적이었다. 수상 당시 타 병원에서 총상에 대한 변연 절제술 및 세척술 후에 일차적 봉합술을 시행받았으며, 상완부의 전외측에 5 cm 가량의 오염된 상처가 있었다. 본원에서 변연절제술 및 탄환 파편의 제거술을 시행하고 외고정을 통하여 해부학적 정렬을 유지하였다. 술 후 8일까지 상처에 대한 무균적 소독을 시행하였으며, 정맥 항생제를 유지하였다. 술 후 9일째에 광범위 변연 절제술 및 항생제를 섞은 시멘트 구슬 삽입술을 시행하였다. 감염이 호전되는 소견을 보여, 시멘트 구슬 삽입 2주째에 외고정 장치를 제거하고 외고정 핀 삽입부의 피부 봉합술을 시행하였다. 1주 후에, 금속판을 이용하여 내고정을 하였다. 결과: 유합술 후 3 개월째, 만족스러운 상완골의 정렬과 골 유합을 얻었다.