치명적인 Amiodarone 폐독성 4예

이승우,이상학,여동승,이숙영,김석찬,김관형,문화식,송정섭,박성학,정은선,Lee, Seung-Woo,Lee, Sang-Haak,Yeo, Dong-Seung,Lee, Sook-Young,Lee, Seok-Chan,Kim, Kwan-Hyoung,Moon, Hwa-Sik,Song, Jeong-Sup,Park, Sung-Hak,Jung, Eun-Sun 대한결핵및호흡기학회 2002 Tuberculosis and Respiratory Diseases Vol.53 No.6

Amiodarone 폐독성은 약제 복용력이 있는 환자에서 새로운 증상과 X-선의 변화가 있을 때 의심하여야 하며 울혈성 심부전이나 폐감염증, 폐색전증, 악성종양 등과 감별하는 것이 중요하다. 진단은 임상적, 방사선학적, 조직학적 소견을 종합하여 내릴 수 있으며 대부분의 경우에는 약제 중단을 통해서 폐독성의 호전을 기대할 수 있으나 일부에서는 호흡부전으로 진행하거나 기존의 심부정맥의 재발 등으로 인하여 사망하는 경우도 있다. 저자들은 심부정맥으로 amiodarone을 사용하던 환자에서 치명적인 폐독성이 발생한 4예를 경험하였기에 이를 문헌고찰과 함께 보고하는 바이다. The lungs are frequently the site of adverse drug reactions because of their higher oxygen concentration, the distinctive properties of the pulmonary circulation, and the close proximity of the alveolar epithelium to the blood. Amiodarone, an iodinated benzofuran derivative, is an effective antiarrhythmic drug commonly used for refractory tachyarrhythmia. However, it has a wide range of adverse effects, the most serious of which is lung disease. Most patients present with the insidious onset of dyspnea and a nonproductive cough, and generally recover after withdrawing the drug. We recently experienced four fatal cases of amiodarone pulmonary toxicity. Therefore, we discuss these unusual drug-induced pulmonary toxicity cases with a review of the relevant literature.

컴퓨터 발전 초기과정에 영향을 준 수학자들에 관한 고찰

이승우,Lee, Seung-Woo 한국수학사학회 2014 Journal for history of mathematics Vol.27 No.4

Computer is a modern day invention integrated with mathematics, engineering, and logics. The purpose of this study is to examine mathematicians' roles and influences on the invention, establishment, and developments of computers, particularly in the areas of hardware and software, and to emphasize the importance of mathematics on the computer sciences. To implement these purposes, this study firstly examines the mathematicians based on the period. Secondly from the mathematicians' roles in the development of programming, the correlation between mathematics and computers has been investigated. Finally, mathematicians who gave influence on establishing the current development of computer science are highlighted.

하드웨어 전공자들의 수학 관련 교과목 학업성취도 제고 방안

이승우,Lee, Seung-Woo 한국데이터정보과학회 2015 한국데이터정보과학회지 Vol.26 No.4

본 연구에서는 H/W 전공자들의 수학 관련 전공교과목의 관심도 증대와 학업성취도 향상을 목적으로, 첫째, H/W 전공자들이 선호하지 않는 수학을 활용하는 전공분야에 학습자의 수학적 역량을 발전시켜 취업 관심도를 높이고 위의 분야로 취업을 도모하기 위한 교육사례를 제시하였다. 둘째, 향후 H/W 분야에서 컴퓨터프로그래밍을 도구로 한 효율적인 수학 관련 교과목의 교수법을 개발하여 실제 교육현장에 적용해서 전공자들의 학습에 대한 동기 부여와 교육적 효과를 파악하였다. 마지막으로 학업성취도와 설문조사를 실시하고 통계적으로 분석하여 수학 교육에 대한 효과적 운영방안을 제시하고자 하였다. The purpose of this study is to increase the interest in mathematics-related curriculum and improve mathematics academic achievement of H/W majors. Firstly, this paper proposes the educational case study that develops the learner's ability, increases the interest and raises the employment rate in the unfavorable mathematics-related fields for the H/W majors. Secondly, this paper presents the future teaching method on mathematics-related curriculum that applies to the actually teaching-learning based on the computer programming in the field of the H/W. Lastly, this paper suggests the promising pedagogical method for mathematics by using the statistical analyses of academic achievements and surveys in order to present the effective conducting method of mathematics education.

인쇄 롤의 간접식 레이저 가공을 위한 코팅과 에칭 기술

이승우,김정오,강희신,Lee, Seung-Woo,Kim, Jeong-O,Kang, HeeShin 한국레이저가공학회 2013 한국레이저가공학회지 Vol.16 No.4

For mass production of electronic devices, the processing of the printing roll is one of the most important key technologies for printed electronics technology. A roll of printing process, the gravure printing that is used to print the electronic device is most often used. The indirect laser processing has been used in order to produce printing roll for gravure printing. It consists of the following processing that is coating of photo polymer or black lacquer on the surface of printing roll, pattering using a laser beam and etching process. In this study, we have carried out study on the coating and etching for $25{\mu}m$ line width on the printing roll. To do this goals, a $4{\mu}m$ coating thickness and 20% average coating thickness of the coating homogeneity of variance is performed. The factors to determine the thickness and homogeneity are a viscosity of coating solution, the liquid injection, the number of injection, feed rate, rotational speed, and the like. After the laser patterning, a line width of $25{\mu}m$ or less was confirmed to be processed through etching and the chromium plating process.

각막의 화학손상에 대한 임상적 고찰

이승우,김홍균,김광수,강정훈,Seung-Woo Lee,Hong-Kyun Kim,Kwang-Soo Kim Jung-Hun Kang 대한안과학회 2005 대한안과학회지 Vol.46 No.9

Purpose: To establish a treatment regimen and preventive measures through clinical study and demographic profile of chemical corneal injury cases. Methods: The records of all patients presenting with chemical corneal injuries from January 1 1997 to December 31 2003 were evaluated. One hundred forty-three chemical corneal injuries in seventy-eight patients presenting to the Dongguk University Hospital were analyzed. Patients was divide into three groups in accordance to occupation (Group I, farmer, Group Ⅱ, directly chemical-agents exposure occupation, Group Ⅲ, others). The records were examined to extract information about age, sex, extent of injury, chemical substances involved, place of injury, delay time of arrival at hospital and visual acuity. Classification of corneal burns was scored according to Roper-Hall.1 Results: The patient consisted of 63 males (80.8%) and 15 females (19.2%), with a mean age of 39.21±13.27 years. The most common agent causing corneal injuries was pesticide, followed NaOH. Ninety-eight (68.5%) eyes showed Grade 1 burns, 27 (18.9%) eyes showed Grade 2, 15 (9.1%) eyes Grade 3 and 5 (3.5%) Grade 4. The severity of chemical corneal burn and deterioration of the visual acuity was more severe in group Ⅱ than in the other groups. Conclusions: Chemical ocular injuries may lead to serous visual impairment. Therefore, proper education for appropriate handling of chemicals to prevent the accidents is important.

콘크리트포장의 줄눈의 잠김에 대한 연구

이승우,Lee, Seung-Woo 한국도로학회 2001 한국도로포장공학회 논문집 Vol.3 No.1

줄눈콘크리트포장의 줄눈은 온도 및 습도변화에 기인하여 발생하는 슬래브내에 무작위하게 발생하는 균열을 제어할 목적으로 설계된다. 이러한 인위적인 균열 (줄눈)은 자연발생적인 균열에 비하여 줄눈채움, 하중전달장치등의 보호대책을 강구하는 것이 용이하다는 장점을 가지고 있다. 줄눈채움의 잠재적인 이점은 표면수의 하부층으로의 침투로 인한 하부층의 약화 및 비압축성 물질 (작은 입자위 골재)의 줄눈내에 끼어듦으로 인한 스폴링을 방지하는데 있다. 합리적인 줄눈 채움의 설계를 위해서는 줄눈폭의 변화 (줄눈의 수평 움직임)의 산정이 중요한 입력요소이다. LTPP SMP 연구에 포함된 16개의 줄눈콘크리트포장의 줄눈의 수평움직임에 대한 장기 현장계측자료를 토대로 상당수의 줄눈에서 수평움직임을 허용하지 않고 있다는 것이 밝혀진바 있다. 이러한 현상을 줄눈잠김이라고 한다. 줄눈잠김이 발생하는 원인은 설계상에 계획된 줄눈부의 균열이 발생하지 않기 때문이라고 추정된다. 본 연구에서는 임의의 줄눈콘크리트포장에서 줄눈잠김의 비율을 예측할 수 있는 모델을 제시하였고 줄눈 잠김이 포장체의 성능에 미치는 영향을 조사하였다. Joints in jointed concrete Pavement are designed to control against randomly occurred cracks within slabs, which may be caused by temperature or moisture variation. The advantage of these artificial cracks (joints) over naturally occurred cracks are easy access of protections, such as installation of joint seal and load transfer mechanism. The potential benefits of joint seals are to prevent infiltration of surface water through the joint into underlying soil and intrusion of incompressible materials (debris, fine size aggregate) in to the joint, which may prevent weakening of underlying soils and spallings due to excessive compressive stress, respectively. For the adequate design of joint seal, horizontal variation of joint widths (horizontal joint movements) are essential inputs. Based on long-term in-situ joint movement data of sixteen jointed concrete pavement sections in Long Term Performance Pavement Seasonal Monitoring Program (LTPP SMP), it was indicated that considerable Portion of joints showed no horizontal movements with change in temperature. This Phenomenon is called 'Joint Freezing'. Possible cause for joint freezing is that designed penetrated cracks do not occur at a joint. In this study, a model for the prediction of the ratio of freezing joints in a particular pavement sections is proposed. In addition, possible effects of joint freezing against pavement performance are addressed.

전기전자공학분야에서 수학/통계 내용분석

이승우,Lee, Seung-Woo 한국수학사학회 2008 Journal for history of mathematics Vol.21 No.4

본 연구는 전기전자공학의 학부과정에서 세부전공트랙을 작성하여 전공교과목에서 필요한 수학/통계의 내용을 분석해 보았다. 그리고 각 전공트랙별로 수학/통계의 역할과 중요성을 파악하였고 수학/통계와 연계할 수 있는 트랙도 선정해보았다. This paper is to analyze the contents based on the Math/Stat in the electrical & electronic engineering fields. This paper introduces the role and importance of Math/Stat in the electrical & electronic engineering tracks and chooses the correlation track between the Math/Stat and Electrical & Electronic Engineering Fields.

하드웨어 전공자들의 확률 및 통계 관련 학업성취도 제고에 관한 연구

이승우,Lee, Seung-Woo 한국데이터정보과학회 2016 한국데이터정보과학회지 Vol.27 No.4

본 연구에서는 H/W 전공자들의 확률 및 통계 학습능력 증대를 위한 목적으로, 첫째, H/W 전공교과과정에서 개설된 프로그래밍관련 교과목과 멀티미디어 신호처리 교과목에 확률 및 통계를 연계한 교수법을 개발하여 교수-학습함으로써, 연구대상 학생들의 학업성취도 향상에 효과가 있는가를 검증하고 회귀분석을 활용하여 그 교육효과를 분석하고자 했다. 둘째, H/W 전공교과과정에서 설문조사와 확률 및 통계 연계 교육사례를 실시하고 통계적으로 분석하여 향후 확률 및 통계 학습능력을 함양하기 위한 효율적 교수-학습 운영방안에 관하여 제안하고자 했다. 마지막으로, 확률 및 통계는 H/W 분야와 연계함으로써 새로운 기술개발 및 지속적인 경쟁역량 강화를 유지해 나가는 필수교과임을 제시하고자 했다. The purpose of this study is to improve the learning ability of probability/statistics for H/W majors. Firstly, we developed a teaching method coupling probability/statistics with programming and multimedia signal processing courses that are opened in the H/W major curriculum. By use of its teaching-learning, we tried to verify the effectiveness on the improvement of learner's academic achievement and then analyze its educational efficiency through the regression analysis. Secondly, by analyzing the surveys and the statistical results of the education cases, we proposed a management plan on efficient teaching-learning in order to cultivate the learning ability of probability/statistics at a future time. Lastly, we concluded that probability/statistics is a required course of learners so as to contribute for the advanced technical development and the enhanced competitiveness in the field of the H/W.

인구통계학적 요인 및 나트륨 섭취와 건강관련 삶의 질 간의 연관성: 경주지역 성인을 중심으로

이승우,황지윤,김인선,이수진,정경식,고광필,백영화,Lee, Seung-Woo,Hwang, Ji-Yun,Kim, In Seon,Lee, Sujin,Jeong, Kyungsik,Ko, Kwang-Pil,Beak, Younghwa 한국식생활문화학회 2021 韓國食生活文化學會誌 Vol.36 No.1

Sodium intake has been associated with the health-related quality of life (HRQoL). This study examined the demographic factors related to HRQoL and whether there is an association between sodium intake and HRQoL in adults residing in rural areas. A total of 1,980 adults (aged ≥20 years) were selected from a cross-sectional study conducted between December 2013 and February 2014 in Gyeongju, South Korea. The sodium intake and HRQoL were measured using a validated food frequency questionnaire and the EuroQol Five-Dimension (EQ-5D) (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression), respectively. The education levels (<5 years) were inversely associated with all five dimensions of HRQoL. Men had better EQ-5D scores for each of the five components examined. Adults living with spouses had better scores related to usual activities and anxiety/depression, whereas widowers had decreased scores of mobility and self-care. Unlike older adults aged 70-79 years, adults aged <60 years were more likely to have greater scores related to mobility, usual activities, and pain/discomfort. The income levels were also inversely related to the scores for self-care, usual activities, pain/discomfort, and anxiety/depression. Sodium intake was positively associated with the HRQoL related to self-care, usual activities, and pain/discomfort, but it was negatively associated with anxiety/depression. In conclusion, these findings suggest that the demographic factors and sodium intake were independently associated with HRQoL. The results highlight the need to provide tailored, targeted policies and interventions that consider personal characteristics and dietary intake to improve the overall HRQoL in adults residing in rural areas.

컴퓨터프로그래밍과 관련된 교과목 내용분석

이승우,Lee, Seung-Woo 한국수학사학회 2009 Journal for history of mathematics Vol.22 No.2

컴퓨터프로그래밍은 문제해결능력 향상과 논리적 사고력 함양을 위한 도구로서, 본 연구에서는 컴퓨터교육의 방향설정과 문제해결과정에서의 프로그래밍 교육의 역할을 알아보고자한다. 또한 수학/통계학과의 컴퓨터프로그래밍 특성화를 위하여 수학/통계학과와 IT학과를 연계한 프로그래밍 교과목을 분석한다. 이를 통하여 컴퓨터프로그래머로서 능력 있는 인재를 양성해서 사회에 배출하고자 한다. The computer programming is a useful tool to cultivate the logical thinking and encourage the problem solving competence. With the purpose of specifying the computer programming, this study mainly concerns with what the computer programming is in the Math/Stat education, and the role of the computer programming when it regards the problem solving procedure. This provides the possibility of Math/Stat major to be specified with the connection of IT related courses, and eventually the specified Math/Stat major enables more qualified graduates to be educated.