류마티성 승모판 협착증 환자에서 Inoue 풍선을 이용한 경피적 승모판 풍선 성형술의 임상 경험

박시훈,신길자 梨花女子大學校 醫科大學 醫科學硏究所 1996 EMJ (Ewha medical journal) Vol.19 No.1

Object : Percutaneous mitral balloon valvuloplasty was introduced by Dr. Inoue in 1984 and it is now widely used in the treatment of mitral stenosis due to its simple design to use. Method : From September 1993 to January 1996, 11 cases of percutaneous mitral balloon valvuloplasty were performed at the Ewha Womans University Hospital. Result : Following the percutaneous mitral balloon valvuloplasty, the mitral valve opening area was increased from 1.18±0.34㎠ to 1.91±0.62㎠(p<0.001). The mean mitral valve diastolic pressure gradient was decreased from 14.35±6.00mmHg to 5.41±4.03mmHg.(p<0.001) The NYHA functional class was improved significantly. Among 11 cases, 1 case(9%) was failed to expand mitral valve opening area and another 1 case developed grade 2 of mitral regurgitation. But there was no life threatening complication such as cardiac tamponade. Conclusion : It is concluded that percutaneous mitral balloon valvuloplasty with Inoue alloon is an effective and simple method for most patient with mitral stenosis who do not have thrombi.

승모판 협착증에 있어서 승모판 석회화의 정량적 부석

박시훈,정남식,조승연,신동환,김선일 대한순환기학회 1994 Korean Circulation Journal Vol.24 No.1

Justification for Integrated Care of Dementia and Presbycusis: Focused on National Dementia Policy

박시훈,한우재,박경호 한국청각언어재활학회 2021 Audiology and Speech Research Vol.17 No.1

Dementia management has become one of essential factors in the national policy globally in terms of the elderly health care service. In the brief communication, we compared various national reports from other countries to see whether current care service for the dementia had integrative approach for the patients with hearing loss in Korea. We also discussed a need of systematic hearing care for the elderly with dementia who was also a suspected case of aged-related hearing loss because many studies had confirmed that untreated hearing loss has a negative effect on dementia and vice versa. After analyzing the national policy from several countries, we found that the systems had been well established to screen dementia patients by using various clinical tests in UK, Canada, and Japan who provided appropriate services by classifying types of the dementia. Remarkably, the hearing test was included as the testing protocol for the dementia in Canada and the experts such as speech pathologists and music therapists had worked in a non-pharmacotherapy program for the elderly with dementia in France. Unfortunately, the dementia policy of Korea needs to be refined when considering the hearing care/management in that the integrated management of hearing and dementia are important. In addition, the clinicians who work for the dementia care home need to know audiological knowledge. Since the auditory training and rehabilitation for the elderly can reduce increased rate of cognitive decline, we strongly recommend that auditory training should be a part of the cognitive rehabilitation programs in the dementia care home.

증분조세회피와 세무위험

박시훈,김갑순 한국세무학회 2019 세무와 회계저널 Vol.20 No.6

This study investigated the relationship between incremental tax avoidance and tax risk. Prior studies have expected that higher tax avoidance facilitates tax risk; however, the need arises to reconsider how tax avoidance should be measured as the results of previous studies have depended on the way they measured tax avoidance. Tax avoidance is commonly measured based on the consistently low level of the effective tax rate (ETR). However, specific companies or industries can show consistently low ETR because of consistent tax cut policy from the government. Since Long-term ETR reflects persistence in the ETR or offsets any volatility during the period in the ETR, a problem arises when interpreting the relationship between Long-term ETR and persistence or volatility of ETR. To solve such problems, we present the possibility of a new measure, incremental tax avoidance. Because tax avoidance is an action to reduce ETR, a decrease in ETR compared to the company’s previous periods may capture management intentions. We derived incremental tax avoidance by subtracting ETRt from ETRt-1, to ensure that the value reflects the size of tax avoidance. Because negative value means no tax avoidance, we excluded samples with negative values from our data. Tax risk is the standard deviation of Cash ETR or GAAP ETR during t+1~t+5. Data consists of KOSPI and KOSDAQ non-financial companies from 2003 to 2013. Our test results show a statistically significant positive effect of incremental tax avoidance on both tax risk measures based on Cash ETR and GAAP ETR. This study contributes to the literature in that it suggests and confirms the applicability of a new tax avoidance measure, which mitigates the problem of current tax avoidance measures. 본 연구는 증분조세회피와 세무위험과의 관련성을 분석한 연구이다. 조세회피에 관한 선행연구에서는 조세회피와 세무위험의 관련성에 대하여, 높은 조세회피수준이 세무위험을 증가시킬 것으로 보았다. 그러나 최근 조세회피와 세무위험의 관계를 실증분석한 선행연구들은 조세회피와 세무위험의 측정방법에 따라 다른 결과를 보고하였다. 본 연구에서는 기존연구의 문제점을 개선하기 위해 조세회피를 새롭게 정의하고 측정하였다. 기존연구와 같이 조세회피의 측정치로 유효세율(ETR)을 사용할 경우 기업 및 산업별로 나타나는 지속적인 세금감면혜택으로 낮은 수준을 유지하는 경우와 조세회피로 낮은 수준을 유지하는 경우를 구분하지 못할 수 있다. 또한 장기ETR은 변수에 지속성이 반영되어 있으므로 ETR의 지속성 또는 변동성과의 관계를 연구 시 해석상의 오류가 발생할 수 있다. 본 연구에서는 증분조세회피 즉 ETR의 수준이 아닌 일정 기간 ETR의 감소분을 조세회피의 측정치로 사용하여 측정한 증분조세회피가 세무위험에 미치는 영향을 분석하였다. 조세회피는 ETR의 감소에 영향을 미치는 행위이므로 과거 기간보다 낮아진 ETR은 조세회피와 관련성을 갖는다. 증분조세회피는 그 값의 크기가 조세회피의 크기를 반영할 수 있도록 과거 t-n기의 유효세율에서 t기의 유효세율을 뺀 값을 사용하였고, 음수 값은 표본에서 제외하였다. 세무위험은 t+1기~t+5기의 총 5년간의 Cash ETR 또는 GAAP ETR의 표준편차로 측정하였다. 표본은 2003년부터 2013년까지의 유가증권과 코스닥시장 상장기업 중 비금융업을 대상으로 하였다. 실증결과 증분조세회피와 세무위험과의 관련성은 Cash ETR과 GAAP ETR 모두 통계적으로 유의한 양(+)의 값으로 나타났다. 이러한 결과는 증분조세회피가 커질수록 조세회피의 변동성도 증가하는 것을 의미하는 것으로, 과거의 조세회피 증가와 미래의 세무위험 증가가 관련성을 갖는다는 연구가설을 기존연구와 달리 증분조세회피의 개념을 이용하여 실증하였다는데 연구의 의의가 있다.

컴퓨터 그래픽스를 활용한 조경수목 형상자료의 가시화 - AccuRender의 수목 모델링 모듈 활용을 중심으로 -

박시훈,조동범 한국조경학회 1999 韓國造景學會誌 Vol.27 No.4

The purpose of this research is to find som ways to model tree forms more efficiently in reference with surveying structural data and handling parameters in plant Editor of AccuRender, the AutoCAD-based rendering software adopting the procedural plant modeling technique. In case of modelling a new tree, because it is efficient to modify an existing tree data as a template, we attempted to classify 81 species' data from existing plant library including conifers and deciduous tree. According to the qualitative characteristics and quantitative parameters of geometrical and branching structure, 8 types of tree form were classified with factor and cluster analysis. Some critical aspects found in the distributions of standardized scores of parameters in each type were discussed for explaining the tree forms intuitively. For adaptability of the resulted classification and typical parameters, 10 species of tree were measured and modelled, and proved to be very similar to the real structures of tree forms. CG or CAD-based plant modelling technique would be recommended not only as a presentation tool but for planting design, landscape simulation and assessment.

치매 환자를 위한 청각 검사의 체계적 문헌 고찰 및 메타 분석

박시훈,한우재,공태훈,서영준,한재현,김태희 대한이비인후과학회 2021 대한이비인후과학회지 두경부외과학 Vol.64 No.2

It is acknowledged that there is a negative relationship between dementia and auditory functionin older adults. This study conducted a systematic review and meta-analysis based on the dataof audiologic testings from patients with neurodegenerative diseases in terms of auditory eventrelatedpotentials and central auditory processing tests, while focusing on Alzheimer’s disease(AD), dementia with Lewy bodies (DLB), and Parkinson’s disease dementia (PDD). A total of34765 articles were retrieved from the seven electronic databases. After being screened by Participants,Index test, Control, Outcomes, Study design (PICOS) criteria, 129 articles for ADwere included and then 72 articles were applied to the meta-analysis. However, five and six articleswere systematically reviewed for the auditory functions of DLB and PDD, respectively,due to a small number of articles. The results of meta-analysis showed a significant differencebetween patients with AD and age-matched normal subjects, for N200 and P300 latency, P300amplitude, and the behavioral central auditory processing tests, although there was a high heterogeneity. On the other hand, the systematic review indicated that the results of mismatchnegativity test might distinguish auditory performance of DLB patients from that of PDD. Furthermore, for P300 amplitude, anterior to posterior distribution of brain resulted in meaningfuldifference of auditory function between AD and DLB patients. In sum, current reviewstudy suggests that lesion and degree of auditory (dys)function may be different depending onthe type of dementia, although future research should be followed.

Drug-Eluting Stent Used to Treat a Case of Recurrent Right Coronary Artery In-Stent Restenoses often Accompaniedby Acute Inferior Wall Myocardial Infarction

박시훈,권기환,유승기 대한심장학회 2005 Korean Circulation Journal Vol.35 No.6

We successfully treated a case of in-stent restenosis, which presented on 6 occasions, resulting in frequent acuteinferior wall myocardial infarctions, using a drug-eluting stent. This case demonstrates that drug-eluting stentsoffer the promise of an effective treatment for frequent in-stent restenosis, and importantly, that the underexpansionof a drug-eluting stent heightens the risk of acute or subacute stent thrombosis.

Photonic Communications between Asymmetric Pairs of Cholesteric Liquid Crystal Drops

박시훈,이상석,김신현 한국공업화학회 2022 한국공업화학회 연구논문 초록집 Vol.2022 No.-

혁신시스템 국제화 측정을 위한 프레임워크 구축 및 활용: 한국 원자력산업과 우주산업을 중심으로

박시훈,조형례,정선양,Park, Si-Hun,Cho, Hyung-Rae,Chung, Sunyang 기술경영경제학회 2016 Journal of Technology Innovation Vol.24 No.2

본 연구에서 우리는 혁신시스템 국제화의 측정을 위한 프레임워크를 수립하고 한국원자력산업과 우주산업에 적용을 통해서 혁신시스템 국제화와 리더십의 연관관계에 대한 사례연구를 수행하였다. 이 프레임워크를 통해 혁신시스템의 국제화 정도와 기술수준과의 연관관계를 살펴본 결과, 한국 원자력산업은 기술수준의 선도그룹으로서 추격그룹인 우주산업 대비 혁신시스템 국제화의 주요기능에서 국제적 적법성의 생성을 제외하고 높은 수준을 보여주었다. 이를 통해 혁신시스템 국제화의 정도는 리더십과 높은 연관관계를 보임을 확인할 수 있었다. 이처럼 한 국가 내에서 산업간 혁신시스템의 국제화 정도는 차이를 보이며 리더십을 획득하기 위해서는 혁신시스템 국제화의 흐름의 대응이 필요함을 제시하고 이에 대한 정책적인 시사점을 도출하였다. 이 프레임워크의 적용을 통해서 한국 산업의 국제적인 리더십에 대한 사례를 심층 분석할 수 있게 하며, 또한 전략적 딜레마에 빠진 산업에서의 기술경영을 위한 시사점들을 제공한다. In this study, we established a framework for measuring the internationalization of innovation systems. Through this, we try to make a comparative analysis on the atomic energy and space sector in Korea. According to our analysis, the atomic energy sector has a higher level of internationalization in its innovation system with technological level than the space sector. This study indicates that the internationalization of innovation system is an important factor for catching up a leader. The framework, which was developed in this study, could be applied to many case studies on an international leadership of innovation system. In addition, it could provide some implications for technology management, especially in the sectors which fell into a strategic dilemma.

원자력 기술혁신에 대한 고찰: 4세대 원자력 에너지기술 전환 이슈를 중심으로

박시훈,정선양,Park, Si-Hun,Chung, Sunyang 기술경영경제학회 2016 Journal of Technology Innovation Vol.24 No.4

본 연구는 원자력기술의 혁신특성을 심층조사 함으로써 4세대 원자력에너지기술의 전환 시 발생 가능한 이슈를 이해하고 한국의 정책현황을 분석하여 4세대 원자력에너지기술의 성공적 안착을 위한 시사점을 도출하였다. 이는 현재 세계 5강의 원자력에너지기술 강국인 한국에서 4세대 원자력에너지기술의 도래에도 지속가능한 경쟁력을 유지하기 위한 중요한 정책적인 시사점으로 활용할 수 있을 것으로 사료된다. 정성적 문헌연구방법을 통해 원자력기술혁신에 관한 문헌들을 조사한 결과, 4세대 원자력 에너지기술의 전환에 영향을 미치는 요인은 크게 4가지로 확인할 수 있었다. 이는 장기간의 안정적인 자원 할당, 혁신을 위한 이해당사자 간의 지속적인 상호작용, 완전한 시스템을 위한 기술과 노하우의 축적, 적용 및 실증을 위한 정책적인 시장이었다. 이를 한국의 4세대 원자력에너지기술과 연관한 정책을 대상으로 적용하여 사례분석을 한 결과, 현재 4세대 기술이 기술개발의 초기단계에서 실증단계로 넘어가는 시점임을 감안하더라도 연관한 정책은 실증과 운영을 위한 전문인력의 체계적인 양성 방안, 사회적 수용성과 저항에 대한 대응, 실증에 대한 구체적인 계획 수립, 4세대 원자력시스템을 적용하기 위한 정책적인 시장을 제안하는 장기적인 노력, 이해당사자들 간의 구체적이고 지속적인 상호작용을 적극 장려하는 것이 체계적으로 필요함을 제시하였다. In this study, we conducted an in-depth literature review of the innovation characteristics of nuclear technology. We understood that the main issue may be a transition of fourth generation nuclear energy technology. We also analyzed a present status of Korean policy on nuclear energy technology and identified some implications for a successful settlement of the fourth generation nuclear energy technology. This study could provide some policy implications for maintaining the sustainable competitiveness of the fourth generation nuclear energy technology in Korea. According to our study, the factors that influence on a transition of nuclear energy technology are a policy-induced market for technical application and demonstration, stable and long-term resource allocation, constant interaction among stakeholders of innovation, accumulation of skill and know-how for an entire system. In addition, we conducted a case analysis on policy for Korean fourth generation nuclear energy technology. According to this case study, it would be necessary for Korea to pursue systematic training of human resources, active response to a social acceptance and reaction, establishment of specific plan for technical demonstration, long-term policy suggestion, and active promotion of constant interaction between stakeholders.