관상동맥질환 환자에서 스텐트 시술 후 재협착에 관한 연구

강진환,권영주,박상호,한대희,이상철,김명구,변정득,최병조,심규혁,온영근,현민수,김성구 순천향의학연구소 2001 Journal of Soonchunhyang Medical Science Vol.7 No.2

Background and aims : In the coronary artery disease, a rate of restenosis was much decreased by placement of coronary stent than when percutaneous transluminal coronary angioplasty has been applied, but there are still important clinical problems of restenosis. There has been many progressive studies about various factors contributed to this restenosis. So, we studied a relation between restenosis after placement of coronary stent in the coronary artery disease and many clinical factors, characteristics of stenotic lesion and procedural factors, and also assessed the restenosis rate of various coronary stents. Methods : Total 58 lesions(46 cases of patients ; man 30, woman 16) were evaluated, which has been performed a follow-up coronary angiography after 6 months (mean 188 days) since coronary stent had been placed. Various stents were implanted and assessed a relation between restenosis and many factors. Results : Of 58 lesions were target stenotic studies, there were 22 of restenotic lesions(37.9%), and the restenosis rate wes statistically significant difference in the relation with diabetes mellitus(p<0.05), group of acute myocardial infarction(p<0.05) among clinical diagnosis of ischemic heart disease(stable angina, unstable angina and acute myocardial infarction) in clinical factors and with high dilation pressure of stent(p<0.05) in procedural factors. When the rate of restenosis was evaluated among implanted stents, it was lowest in the Multilink^(®) stent and highest in the Nir Royal^(®) stent(60%). Conclusion : In this study of restenosis and various factors after placement of stents in the coronary artety disease, factors such as diabetes mellitus, group of acute myocardial infarction and a dilation pressure of stent were significant related with restenosis and the restenosis rate of Multilink^(®) stent was lowest and the highest restenosis rate was of Nir Royal^(®) stent.

プレビッシュ命題と国際価格決定に関する再考

韓基早,姜晶奎 동의대학교 경제경영전략연구소 2004 經濟經營硏究 Vol.2 No.2

Prebisch에 의해 신고전파무역론에 대한 의문이 제시된 이래, 에마뉴엘, 아민, 에반스 등에 의해 「不等價交煥論」으로서 신고전파무역론에 대한 비판이 이루워져 왔다. 또한 Steedman, Metcalfe, Mainwaring, 高增明씨들에 의해 상품의 생산 기간이 다를 때, 혹은 자본을 생산수단으로 생각할 때는, 리카도의 비교생산비설이나 H-O-S정리는 성립하지 않는다는 것이 밝혀졌다. 그러나, 이러한 분석들은 모두 정태적인 분석으로 경제성장, 기술진보 등의 동태적인 요인은 배제되어 있다. 따라서 현실 경제에 보다 접근하기 위해서는 이러한 동태적인 요인의 도입이 필요하다. 이 점에 대해서는 향후의 연구과제로서 분석을 해나가고 싶다. 또한 국제가격의 결정에 관한 대표적인 이론을 고찰했지만, 신고전파에 있어서는 교역국의 생산함수와는 관계없이 상대가격이 결정되고, 그에 따라서 특화한 각국의 생산함수에 의해 이윤율이 정해지기 때문에 이윤율은 교역국간에 서로 영향을 주지 않는다. 따라서 상대가격의 유리화는 무역하의 이윤율이 자급자족 경제하의 이윤율보다 상승하게 한다. 또 상대가격이 유리하게 되지 않으면 무역은 개시되지 않으며 불리화하면 무역은 정지된다. 이에 대해서 네오·리카도파의 이론에 근거하여 상대가격 및 교역조건에 대해 분석한 결과, 교역국의 생산함수에 의해 상대가격과 이윤율이 동시 결정되기 때문에 무역은, 이 상대가격의 크기 여하에 의해서 무역이 개시되거나 안되는 것이 아니라, 상대 가격과는 관계없이 무역이 전제된다. 또한 교역국의 생산함수가 상호 규정적이기 때문에 이윤율은 국제적 이윤율이 성립하고, 기술계수가 같고, 임금율이 외생적인 한, 상대가격은 생산함수가 시프트 하지 않는 한, 저임금 국가에 있어서 반드시 불리화 하고, 양국의 이윤율은 상호 규정적으로 되어 저임금 국가의 이윤율은 불리화한다.

Acriflavine-Guanosine 복합제 (AG60)의 조직내 분포에 대한 형광현미경적 연구

고정식,임수재,안의태,김진국,김상건,이경영,강종구,홍은경,정영신,유보림,한영복 대한해부학회 1999 Anatomy & Cell Biology Vol.32 No.1

Stewart 플랫폼을 이용한 손목 힘/토크센서의 해석

한정훈,강철구 건국대학교 1996 學術誌 Vol.40 No.2

A Stewart platform-based force/torque sensor with 6 instrumented elastic legs needs the solution of forward kinematics of the Stewart platform in order to obtain forces and torqueg acting on the upper plate from given 6 leg forces. The solution of forward kinematics, however, is not known in a closed-form. In this paper, the closed-form solution of forward kinematics is derived by means of the linearization of the solution of inverse kinematics, and the closed-form solution is used for the calculation of the force and the torque of the sensor. Kinematic design parameters of the Stewart platform are determined so that the force/torque sensor may have the isotropic force/torque properties and be installed in a robot wrist. The validity of the proposed linearization method is investigated through the calculation of forces and torques.

Segregation Charging Behavior of Ultra‑Fine Iron Ore Briquette in Sinter Feed Bed: DEM Analysis

Kang‑Min Kim,Jong‑Ho Bae,Jong‑In Park,Jeong‑Whan Han 대한금속·재료학회 2020 METALS AND MATERIALS International Vol.26 No.8

The sinter–briquette complex firing process which is an effective technology for utilization of low grade ultra-fine ore is amethod for charging sinter feed mixed with briquette made of ultra-fine ore. To uniformly fire briquettes using the excessheat from the lower part of the sinter feed bed, they must be segregated in that region. In this study, the particle propertiesand interaction coefficients of real samples were measured and used for a numerical analysis. Furthermore, a discrete elementmethod simulation was used to investigate the characteristics of the sinter feed and briquette charging process, namelyburden distribution and porosity, by varying the shape and mixing ratio of the briquette. The results showed the while theshape of the briquette did not affect the burden distribution and porosity, the porosity at the lower part of the bed proportionallyincreased with the briquette mixing ratio. Furthermore, it was observed that to achieve optimized heat distribution ofthe bed, the proportion of briquette in the charging mixture should be more than 20%.

사무직 근로자의 수면의 질 및 직무스트레스와 우울과의 관련성

강미나,강수영,권수정,김현주,배재원,이보연,이예진,임의롬,정다영,조한솔 이화여자대학교 간호과학대학 2013 이화간호학회지 Vol.- No.47

Purpose: The purpose of this study was to understand the degree of depression, sleep quality, job stress and their association among office workers. Method: A self-administered questionnaire was distributed to 147 workers employed in 5 big enterprises, and 5 small and medium enterprises from October 21 to November 21, 2012. The questionnaires included socio-demographic and health-related characteristics, job-related characteristics, sleep quality, job stress (KOSS) and depression (CES-D). Result: Among all subjects, 23.1% was in the depression group (21 points and over in the CES-D score). Depressive level was positively correlated with job stress and quality of sleep. The adjusted odd ratio for the effects of sleep quality and job stress on depression significantly increased in the depression group compared to that of the normal group. Multiple regression analysis revealed that the following factors of influence had combined explanatory powers on depression: BMI, life satisfaction, quality of sleep, and job stress. Conclusion: The study revealed that complicated influences were exerted on the level of depression by variable factors, as well as socio-demographic characteristics, health-related characteristics, quality of sleep, and job stress. Specifically, the level of depression was influenced by the quality of sleep and job stress.

경골 골수강내 금속정 삽입술시 적절한 도입부에 대한 해부학적 분석

강수용,이은우,강기서,이한준,정호중,정평호 대한골절학회 2004 대한골절학회지 Vol.17 No.2

기능수가 모르타르의 압축강도에 미치는 영향

한정섭,강병희 한국정신과학학회 2003 韓國精神科學學會誌 Vol.7 No.1

기능수가 모르타르의 압축강도에 미치는 효과를 연구하기 위해 수도수를 세라믹 처리하여 기능수로 만들어 사용하였다. 불의 특성의 변화를 측정하기 위해 핵자기 공명장치와 킬리안 사진기릉 사용하였다. 여 러 가지 물을 사용하여 모르타르를 배합하여 양생시간에 따라 압축강도를 조사하였다 셰라믹처리에 의한 기능수의 017 NMR 반치폭이 감소된 것이 확인되있다. 이 가능수에 의한 모르다르의 압축강도는 양생 28일 후 수도수만을 사용한 것에 비해 22%증가하였다. To study any effect functional water on compressive strength of mortar, city water was changed to functional water through ceramics treatment. The change of characteristics of water was measured with 017 NMR and Killian Camera. The compressive strength oj mortar was measured with various curing conditions. The test results shaw that some characteristics of City water have been changed by ceramics treatment At 28 days under curing condition, the compressive strength of mortar which was mixed with treated water was increased by approximately 22 % compared that oj mortar which was mixed with untreated city water.

주의력 결핍·과잉행동장애 소년의 자기공명 영상을 이용한 뇌량 및 측뇌실의 계량적 특성분석

이정섭,홍강의,김주한 大韓神經精神醫學會 1997 신경정신의학 Vol.36 No.2

By means of retrospecitive quantitative neuroanatomic imaging, the authors assessed the corpus callosum and the lateral venticle in the boys with attention deficit hyperactivity disorder(ADHD). The midsagittal cross-sectional area of the corpus callosum, divided into seven regions, and the axial ventricle-brain ratio were measured from magnetic resonance images of 18 boys with ADHD and 15 comparison boys. Two anterior regions, the genu and the rostral body, were found to have significantly smaller areas in the ADHD boys. There was no significant difference in ventricle-brain ratio between ADHD and comparison boys. This finding supports the theory of abnormal frontal lobe development in ADHD.

미혼여성의 화장품구매행동을 통해 본 소비양면성에 관한 탐색적 연구

서정희,강한나 울산대학교 2006 생활과학논문집 Vol.7 No.2

미혼여성이 명품화장품 및 저가화장품을 구입하는 소비행위와 상징적인 의미를 살펴보았다. 이를 위해 울산광역시에 거주하는 20대 미혼여성 10명을 대상으로 질적연구의 한 방법인 심층면접을 실시하였다. 명품화장품의 상징적의미는 '사회적 차별성 추구', '소모품이 아닌 소장품으로서의 가치'로 나타났다. 저가 화장품에 대한 가치와 태도는 '저가가 아닌 정가화장품으로의 인식', '기초에서 색조까지 one-stop shopping 구현'으로 명명하고, 각각의 한계점을 지적하였다. 조사대상자들은 월평균 용돈과 화장품관련 지출금액과 비례해 화장품을 구해마는 것이 나리라 각 품목과 일부 제품군에 따라 양면적으로 소비하고 있었다. 이는 화장품 소비에 대한 상반적인 욕구가 동시에 존재하는 소비의 양면성을 보여준다. The purpose of this was to understand the unmarried women's ambivalence related with cosmetics consumption behavior. This study has conducted in-depth interview to understand the unmarried women's motives and psychological experiences related to luxury and low-price cosmetics. The consumption symbols of the luxuryㆍcosmetics were 'seeking of social distinctions' and 'value of collections. The attitudes about low-price cosmetics were 'regular price perception' and 'one-stop shopping from skin-care to color make-up'. The informants showed ambivalence related with cosmetics consumption. The stuffs were consisted of the luxury and low-price cosmetics.