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Yaw가 있는 긴 관통자에 대한 이중 비행경사판재의 방호성능 분석
백승훈,김승조,유요한,이민형,Paik, Seung-Hoon,Yoo, Yo-Han,Lee, Min-Yeong 한국군사과학기술학회 2006 한국군사과학기술학회지 Vol.9 No.1
The protection capability against an enhanced long rod(L/D=30) with yaw is investigated numerically and compared with that of shorter one(L/D=15). In addition details of interactions between yawed long rods and oblique plate velocity are examined. Through the simulation results, we find that dual flying plates system is more effective with longer rod due to the elongated disturbance. The protection performance is more effective for the penetrator with $+6^{\circ}$ of yaw angle than that with a yaw angle of $-6^{\circ}$.
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건 황색종의 가족력과 관상동맥질환을 갖는 이형집합 가족성 고 콜리스테롤혈증 1례
백승훈,형근영,김경년,조정구,이경근 圓光大學校 醫科學硏究所 1997 圓光醫科學 Vol.13 No.1-2
Familial hypercholesterolemia is a common autosomal dominant disorder with serious health consequences such as the coronary heart disease, in western area affecting approximately 1 in 500 persons in the heterozygous form, is caused by a mutation in the gene for the LDL(low density lipoprotein) receptor. A-45-years old male came to the hospital because of tendon xanthomas on both elbows, knees, and ankles. He also has retrosternal chest pain intermittently since 5 years ago. 4 kindreds of the patient have tendon xanthomas according to autosomal dominant inheritance. Serum levels of total cholesterol and triglyceride were 359 ㎎/dL, 103 ㎎/dL respectively. Lipoprotein electrophoresis showed type Ⅱa pattern. Treadmill exercise test revealed angina pectoris. The case of familial hypercholesterolemia who has familial inheritance of tendon xanthoma is rarely reported in Korea. We report this case with a review of the related literature
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이스라엘 팔레스타인 평화구상에 관한 소고: 아브라함 협정과 오슬로 협정간의 충돌과 한계를 중심으로
백승훈 한국중동학회 2025 한국중동학회논총 Vol.46 No.1
이스라엘-팔레스타인 분쟁은 현대 역사에서 가장 오래되고 복잡한 지정학적 분쟁 중 하나로, 종교적, 민족적, 영토적 경계에서 깊은 분열이 특징이다. 1993년 이후 수십 년간의 협상, 휴전, 국제 중재에도 불구하고 국제 사회는 아직 실현 가능한 해결책에 도달하지 못했다. 두 국가 간 분쟁의 근본 원인은 이스라엘과 팔레스타인 모두가 자신들의 영토로 주장하는 땅을 둘러싼 영토 분쟁에 있다. 이스라엘은 국가 안보의 유지와 유대인 국가로서의 지위를 인정받는 것을 최우선 과제로 삼고 있다. 반면, 팔레스타인 측은 동예루살렘을 수도로 하는 독립 국가 수립과 1948년 아랍-이스라엘 전쟁 당시 피난한 난민들의 귀환을 요구하고 있다. 이러한 상반된 목표는 주기적인 폭력, 정치적 단절, 특히 가자지구와 서안지구에서의 인도적 위기를 초래했다. 따라서 본 논문은 이스라엘-팔레스타인 분쟁을 해결하기 위해 제안된 주요 국제적 해결 방안이 오슬로 협정과 아브라함 협정을 분석할 것이다. The Israeli-Palestinian conflict is one of the longest and most intricate geopolitical disputes in modern history, characterized by profound divisions between the two parties along religious, national, and territorial boarder. Despite decades of negotiations, ceasefires, and international mediation since 1993, the international community has yet to reach on a viable solution. The root of the conflict between the two states lies in a territorial dispute over land claimed by both Israelis and Palestinians. Israel places the utmost importance on the preservation of its national security and the recognition of its status as a Jewish state. In contrast, the Palestinians seek to establish an independent state with East Jerusalem as its capital and the return of refugees who fled the 1948 Arab-Israeli War. These seemingly incompatible goals have resulted in periodic cycles of violence, political disengagement, and humanitarian crises, particularly in Gaza and the West Bank. Thus, this paper analyses principal international solutions that have been proposed in order to resolve the Israeli-Palestinian conflict.
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아랍의 봄 이후의 중동발 이주와 수용국의 정치 안정성 연구
백승훈,노다솔 한국중동학회 2023 한국중동학회논총 Vol.44 No.2
The repercussions of the Arab Spring in the Middle East, which began twelve years ago, still have significant consequences not only for the countries where the uprisings occurred but also for European, East Asian, and North American nations that receive immigrants from the region. The countries that have welcomed the immigrants are grappling with persistent social tensions and conflicts, including issues like Islamophobia and anti-immigrant sentiment. As a result, there is a pressing need for empirical research to analyze the effects of post-Arab Spring Middle Eastern migration on host countries and to gain a deeper understanding of the reasons and facts underlying this impact. This study aims to investigate how immigrants are perceived and what challenges they face in host countries amidst the ongoing instability in Middle East and North Africa (MENA) nations since 2011. Specifically, it intends to explore public opinion and the securitization of immigration matters and, through quantitative analysis, evaluate whether immigrants genuinely influence the political stability of host countries. By employing panel data of 133 countries from 2010 to 2021, this study performed empirical analysis of the impact of immigration on host countries. It aims to provide valuable insights that can guide the formulation of practical immigration policies.
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다중 선형 회귀에 의한 광산란 초미세먼지 측정기의 황사 보정 기법
백승훈,Baek, Sung Hoon 중소기업융합학회 2021 융합정보논문지 Vol.11 No.8
Light-scattering fine particulate matter monitors can measure particulate matter (PM) concentrations in every second and can be designed in a portable size. They can measure the concentrations of various PM sizes (PM<sub>1.0</sub>, PM<sub>2.5</sub>, PM<sub>4.0</sub> and PM<sub>10</sub>) with a single sensor. They measure the number and size of particulate matters and convert them to weight per volume (concentration). These devices show a large error for asian dust. This paper proposes a scheme that compensates the PM<sub>2.5</sub> concenstration error for asian dust by multiple linear regression machine learning in light-scattering PM monitors. This scheme can be effective with only two or three types of PM sizes. The experimental results compare a beta-ray PM monitor of national institute of environmental research and a light-scattering PM monitor during a month. The correlation coefficient (R<sup>2</sup>) of theses two devices was 0.927 without asian dust, but it was 0.763 due to asian dust during the entire experimental period and improved to 0.944 by the proposed machine learning.
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백승훈,김신윤 대한의사협회 2013 대한의사협회지 Vol.56 No.12
A variety of pharmacologic agents have been developed for the treatment of osteoarthritis. At present, however, none of them has been proven to prevent disease progression, and the medications are used only for symptomatic relief. Thus, non-pharmacologic conservative treatment such as education, weight reduction in the obese, and consistent exercise should be recommended first to maintain fitness and tolerance to physical activity. Medication is then indicated to better control symptoms provided non-pharmacologic measures prove inadequate, and a successful strategy most likely would entail a combination of these non-pharmacologic and pharmacologic approaches. Acetaminophen can be tried first because of its efficacy and relatively safe profile, especially in those with mild osteoarthritis. Nonselective non-steroidal antiinflammatory drugs may be used in patients with moderate to severe pain, but long-term medication requires caution due to the increased risk of gastrointestinal and renal complications. Selective cyclooxygenase-2 inhibitors can be better tolerated, especially in patients with risk factors for gastrointestinal adverse events, but potential cardiac and cerebrovascular thrombotic events should be considered in those with preexisting cardiovascular disease. Tramadol and opioids are more potent analgesics. However, they are not recommended for routine use due to a high incidence of nausea, constipation, and drowsiness. These agents require close monitoring for those adverse effects, especially in a geriatric population. Lastly, the pharmacologic plan should be individualized according to the severity and duration of pain, age and gender of the patient, and concurrent comorbidities to maximize the benefit as well as to minimize the risk of adverse effects from medication.
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