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Long working hours and cardiovascular disease: a meta-analysis of epidemiologic studies.
Kang, Mo-Yeol,Park, Hyunseung,Seo, Jeong-Cheol,Kim, Donghoon,Lim, Youn-Hee,Lim, Sinye,Cho, Soo-Hun,Hong, Yun-Chul Lippincott Williams & Wilkins 2012 Journal of Occupational and Environmental Medicine Vol.54 No.5
<P>To conduct a meta-analysis from published studies to evaluate the relationship between long working hours and the risk of cardiovascular disease (CVD).</P>
Kang, Byeong-Mo,Lim, Yeong-Seog,Jeong, Woon-Jo,Kang, Byung-Woo,Ahn, Ho-Geun The Korean Institute of Electrical and Electronic 2014 Transactions on Electrical and Electronic Material Vol.15 No.5
We deposited TiAgN and ZrAgN nanocomposite coatings on pure Titanium specimens, by using arc ion plating (AIP) with single alloy targets. TiAg ZrAg alloy targets of 5 wt.%, 10 wt.% silver content by vacuum arc remelting (VAR), followed by homogenization for 2 hours at $1,100^{\circ}C$ in non-active Ar gas atmosphere and characterized these samples for morphology and chemical composition. We investigated the biocompatibility of TiAg and ZrAg alloys by examining the proliferation of L929 fibroblast cells by MTT test assay, after culturing the cells ($4{\times}10^4cells/cm^2$) for 24 hours; and exploring the antibacterial properties of thin films by culturing Streptococus Mutans (KCTC3065), using paper disk techniques. Our results showed no cytotoxic effects in any of the specimens, but the antibacterial effects against Streptococus Mutans appeared only in the 10 wt.% silver content specimens.
Lim, Seung Mo,Park, Hae Lang,Moon, Hyong Yong,Kang, Kyung Ho,Kang, Hyun,Baek, Chong Hwa,Jung, Yong Hun,Kim, Jin Yun,Koo, Gill Hoi,Shin, Hwa Yong The Korean Pain Society 2013 The Korean Journal of Pain Vol.26 No.1
A 60-year-old man presented with pain on the left cheek and lateral nose. The patient had been diagnosed with facial herpes zoster in the left V2 area 6 months previously. Medical treatment was prescribed for 6 months but it had little effect. We blocked the left infraorbital nerve under ultrasound guidance, but pain relief was short term. Therefore, we performed pulsed radiofrequency treatment on the left infraorbital nerve under ultrasound guidance. Six months after the procedure, the reduction of pain was still maintained, and there was no need for further management.
Evaluation of the Neurological Safety of Epidural Milnacipran in Rats
Lim, Seung-Mo,Shin, Mee-Ran,Kang, Kyung-Ho,Kang, Hyun,Nahm, Francis Sahn-Gun,Kim, Baek-Hui,Shin, Hwa-Yong,Lim, Young-Jin,Lee, Sang-Chul The Korean Pain Society 2012 The Korean Journal of Pain Vol.25 No.4
Background: Milnacipran is a balanced serotonin norepinephrine reuptake inhibitor with minimal side effects and broad safety margin. It acts primarily on the descending inhibitory pain pathway in brain and spinal cord. In many animal studies, intrathecal administration of milnacipran is effective in neuropathic pain management. However, there is no study for the neurological safety of milnacipran when it is administered neuraxially. This study examined the neurotoxicity of epidural milnacipran by observing behavioral and sensory-motor changes with histopathological examinations of spinal cords in rats. Methods: Sixty rats were divided into 3 groups, with each group receiving epidural administration of either 0.3 ml (3 mg) of milnacipran (group M, n = 20), 0.3 ml of 40% alcohol (group A, n = 20), or 0.3 ml of normal saline (group S, n = 20). Results: There were no abnormal changes in the behavioral, sensory-motor, or histopathological findings in all rats of groups M and S over a 3-week observation period, whereas all rats in group A had abnormal changes. Conclusions: Based on these findings, the direct epidural administration of milnacipran in rats did not present any evidence of neurotoxicity in behavioral, sensory-motor and histopathological evaluations.
코로나19 이후 중등 특수학급 특수교사의 원격수업 경험이 갖는 교육적 의미
강승모(Kang, Seung Mo),임경원(Lim, Kyoung Won),강성구(Kang, Seong Goo),황인선(Hwang, In Sun),김주희(Kim, Joo Hee) 학습자중심교과교육학회 2020 학습자중심교과교육연구 Vol.20 No.24
이 연구의 목적은 코로나19로 인해 원격수업을 진행한 중등 특수학급 특수교사의 원격수업 운영에 대한 경험과 이 경험이 갖는 교육적 의미를 살펴보는 데 있다. 이를 위해 코로나19 이후 원격수업을 경험한 중등 특수학급 특수교사 9명을 연구참여자로 선정하여 2020년 4월부터 6월까지 면담을 실시하였으며, 수집된 자료는 포괄적 분석절차에 따라 분석하였다. 연구결과, 중등 특수학급 원격수업 운영에 대한 특수교사의 경험과 의미는 ‘특수교육에 잔인한 코로나19’, ‘고군분투하는 특수교사들’, ‘Post Corona 준비하기’의 3개 상위범주, 6개 하위범주, 12개의 의미단위로 분석되었다. 도출된 주제를 토대로 교육적 의미와 시사점을 제안하면 다음과 같다; 첫째, 원격수업에 유의미한 수업전략과 보편적 학습 설계에 기초한 교육자료 개발이 필요하고, 둘째, 국립특수교육원을 포함한 여러 전문적인 교육지원기관(KERIS, KEDI, EBS 등) 간의 협력과 학부모 등 조력자 참여방안이 마련되어야 하며, 셋째, 포스트 코로나 시대를 대비하여 특수교사와 장애학생의 디지털 리터러시 역량강화가 요구되며, 장애학생 원격수업 기반 마련을 위한 국가차원의 종합적 정책 수립이 필요하다. The purpose of this study was to examine experiences of special education teachers in charge of secondary special education classes who have conducted online classes after COVID-19 and the educational implications of the experiences. For this purpose, interviews were conducted from April to June 2020 for nine research participants who have experienced online classes and the collected interviews and supplementary data were analyzed according to comprehensive analysis procedures. As a result of the study, the experiences and meanings of the secondary special education teachers in the operation of online classes were analyzed in three upper categories: ‘Corona 19 cruel to special education , Special education teachers struggling against Corona-19 , and Preparing for Post-Corona , 6 subcategories and 12 semantic units. Based on these derived themes, the educational meaning and implications are suggested as follows. First, it is necessary for online educational materials to be developed based on meaningful instructional strategies and universal design for learning. Second, cooperation among various national-wide specialized educational support institutions should be prepared and a plan for participation of assistants such as parents must be prepared. Third, it is necessary to adopt digital literacy skills as essential competencies in online classes, and to establish a comprehensive national-level policies for the foundation of online classes for students with disabilities.
임강모(Kang-Mo Lim),정행섭(Hang-Sub Jung),김하식(Ha-Sik Kim),이주신(Joo-Shin Lee) 한국정보기술학회 2009 Proceedings of KIIT Conference Vol.2009 No.-
멀티미디어 데이터의 저작권 주장을 위한 방법으로 사용되고 디지털 워터마킹 중에서 영상에 대한 워터마킹 기법이 많이 연구되어지고 있지만, 칼라 영상에서의 워터마킹 연구가 미비하다. 본 논문에서는 칼라 채널을 분석한 후 분석 결과를 이용하여 DCT 기반의 이미지 워터마킹을 제안하였다. 워터마크 삽입은 원영상과 워터마크를 이산 코사인 변환하여 계수들을 합함으로써 원영상에 워터마크를 삽입하였다. 워터마크 추출은 워터마크가 삽입된 영상을 역 이산 코사인 변환하여 워터마크를 추출하였다. 실험 영상으로는 Baboon 표준 영상을 사용했고, 워터마크는 지문 영상을 이용하여 실험을 수행하였다. 실험 결과, 비가시성 및 워터마크의 상관도에서 만족할 만한 결과를 확인하였다. Image watermarking schemes are researched in the field of digital watermarking for multimedia data copyright protection, but color image watermarking scheme is a little bit insufficient. In this paper, image watermarking of DCT based using color channels analysis was proposed. Watermark is embedded in the frequency domain of the chromatic channels by using discrete cosine transform. Watermark is extracted from watermarked image by using inverse discrete cosine transform. Baboon standard image was used for experimental image, and a fingerprint image was used for watermark image. Simulation results are satisfied with invisibility and correlation from the extracted watermark.
( Seung Mo Lim ),( Hae Lang Park ),( Hyong Yong Moon ),( Kyung Ho Kang ),( Hyun Kang ),( Chong Hwa Baek ),( Yong Hun Jung ),( Jin Yun Kim ),( Gill Hoi Koo ),( Hwa Yong Shin ) 대한통증학회 2013 The Korean Journal of Pain Vol.26 No.1
A 60-year-old man presented with pain on the left cheek and lateral nose. The patient had been diagnosed with facial herpes zoster in the left V2 area 6 months previously. Medical treatment was prescribed for 6 months but it had little effect. We blocked the left infraorbital nerve under ultrasound guidance, but pain relief was short term. Therefore, we performed pulsed radiofrequency treatment on the left infraorbital nerve under ultrasound guidance. Six months after the procedure, the reduction of pain was still maintained, and there was no need for further management. (Korean J Pain 2013; 26: 84-88)