동결건조한 산양뼈의 개이식 효과

최인혁,이종일 한국임상수의학회 1998 한국임상수의학회지 Vol.15 No.2

Freeze-dried cortical bones of the goat were transplanted to the experimental fibular defect of 10 dogs for valuating the possibility of xenogeneic bone implantation and the specificity of BM(Bone Morphogenetic Protein). The . freeze-dried cortical bone eliminated antigens and defatted with chloroform and methanol were freeze-dried at $-80{\circ}C$ for preservation of BMP and then sterilized with 50 gas and storaged in room temperature. Ten freeze-dried cortical implants of the goat were transplanted in experimentally defected regions of bilateral fibula of 5 dogs in clinically normal. The transplanted region had been radiographed for observing state of bone union and BALPOone Alkaline Phosphatase) in the serum of the host was measured for valuating activity of oteoblast per 2 week-interval after transplant procedures. New bone formation had been observed early in one of ten regions around implants about the same time as autoimplant regions. It was incorporated with its host bone during 4-12 weeks after transplantation. In another 2 cases of 2 dogs, new bone formation and absorption of implant had been observed from 4 weeks but they were not incorporated completely until 20 weeks. The rest of the freeze-dried bone implants, 7 cases of 4 dogs had not been observed new bone formation nor absorption of implants. The freeze-drying method for implants means to not influence bone incorporation. Although less of union percentages the union form of this experiment were similar to alloimplantation and it may mean to block immunity reaction that disturbs the bone induction by BMP. It demonsknted that the possibility of the xenogenous bone implantation is recognized by reason of the low specificity of BMP between goat and dog.

전산모사에 의한 다공성 소재의 유효 열전도도 및 항복 강도 계산

최인혁,김혜지,권용우 한국표면공학회 2017 한국표면공학회 학술발표회 초록집 Vol.2017 No.11

소비자관점에서의 기업신뢰도 측정척도 개발

최인혁,김갑식 한국소비자·광고심리학회 2008 한국심리학회지 소비자·광고 Vol.9 No.1

The purpose of this research is to develop an instrument that is able to measure Corporate Trust in a company; Corporate Trust is unilateral trust of customer in relationship with a company Corporate Trust that a company might be honest and have a capacity to conform a tacit and explicit duty. As a result of the research, 4 factors along with 17 items are determined (as follows); 4 factors are Customer Satisfaction and Service, Corporate Social Responsibility, Consumer Protection Policy and Management Capability. Customer Satisfaction and Service include 6 inquiries, Corporate Social Responsibility include 5 inquiries, Consumer Protection Policy include 4 inquiries, Management Capability include 4 inquiries. 본 연구는 소비자관점에서 기업에 대한 신뢰도를 측정하기위한 척도개발이다. 소비자 관점에 서의 기업신뢰도란 “소비자가 기업에 대해 갖는 일방적 믿음으로서 기업과의 교환관계에 있 어서 기업이 명시적, 묵시적 의무이행을 할 것이며, 정직하다는 확신과 의무이행 할 수 있는 역량을 가지고 있다는 믿음”을 말한다. 본 연구 결과 기업신뢰도 측정항목은 4개 요인에 17 개 항목이 도출되었다. 고객서비스요인, 사회적 공헌과 책임요인, 소비자보호요인, 경영능력 요인 등 4가지이다. 고객서비스요인에는 모두 6개 문항이 포함되어 있으며, 사회적 공헌과 책임요인에는 5개 문항, 소비자 보호요인에는 4개 문항, 그리고 경영능력요인에는 2개 문항 이 각각 포함되었다. 준거관련 타당화 검증위한 결과 4가지 요인 모두에서 유의미한 차이가 있는 것으로 나타나 척도의 타당성이 검증되었다.

개에 있어서 실험적 십이지장 폐색시 심전도와 전해질의 변화

최인혁,조영숙 한국임상수의학회 1998 한국임상수의학회지 Vol.15 No.2

The electrocardiogram (ECG) and electrolytes were measured to obtain diagnostic data after experimental obstruction of duodenum in 8 dogs. Clinical signs of these appeared lower heart rate, temperatures respiration and blood pressure than signs of preoperation. In changes of electrolytes and acid-base balances, all dogs appeared hyponatremiai hypochloremia, metabolic alkalosis, and increased pHi HCO3, scot in blood, but potassium values appeared to increase in 3 cases fl-inc.) and to decrease in 5 cases (K- dec.) Two of three in K-inc. and three of five in K-dec. died at 60 hrs and 72 hrs after obstruction respectly. In changes of ECGI amplitudes of the K-inc cases appeared high in T wave and low in R wave, but amplitudes of the K-dec cases appeared low T waver 57 segment and high in R wave. Conduction times of the K-inc appeared the shorted PR intervals but the K-dec appeared the prolonged PR interval. The changes of these appeared apparently in lead II.

베어링용 시일의 일반

최인혁,현준수,김청균 한국트라이볼로지학회 1992 한국윤활학회지(윤활학회지) Vol.8 No.1

치료적 미술활동이 부적응 영재아동의 또래관계와 학교생활적응에 미치는 효과

최인혁,이근매,이신동 한국미술치료학회 2009 美術治療硏究 Vol.16 No.3

This study aimed to investigate the effect of a therapeutic art activity on the peer relationship and school life adjustment of behavior in gifted children. The subjects of this study were 2 elementary school students who were reported by their teachers and parents that they showed unappropriate behaviors and quarrels with friends. The subjects presently attend to **gifted school in Daejeon and IQ test(K-WISC-III) were given. The result of IQ test were as follows: Subject A scored 151 for verbal and 151 for performance. Subject B scored 123 for verbal and 151 for performance. The sub-test for peer relationship and school life adjustment evaluated highly on intellectual helplessness caused by standardized curriculums, uniqueness of gifted students, and anger, restraint, self-control and self-accusation. According to these results, the short-term goal was set and therapeutic intervention to achieve the goal was given. The changes of peer relationship and school life adjustment were as follows(Lee ho-seon, 2001): For subject A showed increasing score on peer relationship scale from 31 to 48 points and on school life adjustment scale from 56 to 71. For subject B showed increasing score on peer relationship scale from 36 to 54 points and on school life adjustment scale from 46 to 79. The parents and teachers were evaluated by Behavior Evaluation Scale(Burks' Behavior Rating Scales) to find the effect of behavior changes and it presented that there was effectiveness on behavior changes. 본 연구는 부적응 영재아동 2명을 대상으로 치료적 미술활동이 부적응 영재아동의 또래관계개선과 학교생활적응 능력을 향상시키는데 효과가 있는가 알아보고자 한다. 연구대상은 교사와 부모상담 결과 학교에서의 문제행동과 친구들과의 다툼 등으로 의뢰가 된 초등학교에 재학 중인 영재아동 2명이다. 현재 대전○○영재스쿨에 다니고 있으며 영재 판별을 위한 검사로 연구자가 지능검사를 실시하였으며, 대상 A는 K-WISC-Ⅲ검사에서 언어성에서 151, 동작성에서 151로 측정이 되었으며, 대상 B는 언어성에서 123, 동작성에서 151로 측정된 영재아동이다. 또래관계와 학교생활 적응을 알기위한 초기 진단의 평가 결과, 평준화된 교육과정에서 오는 지적인 무력감과 영재 학생들의 특유의 독특성, 그에 따르는 또래관계와 학교생활적응의 문제로 울화⋅억제력, 자제력, 자책 등이 높게 측정되었으며 이러한 행동에 대하여 회기별 단기목표를 설정하였고 설정된 목표를 완성할 수 있도록 치료적 개입을 하였다. 또래관계와 학교생활적응에 대한 변화는 이호선(2001)이 수정한 척도를 사용하였으며 대상 A는 또래관계 척도에서 31점에서 48점으로, 학교생활적응 척도는 56점에서 71점으로 증가하였으며, 대상 B는 또래관계척도에서 36점에서 54점, 학교생활적응 척도에서 46점에서 79점으로 증가한 것으로 나타났다. 행동변화의 효과를 알아보기 위하여 행동평정척도(BBRS)에 의한 부모와 교사평가를 실시한 결과 효과가 있는 것으로 나타났다.

산불영향에 따른 송전용 폴리머애자의 특성

최인혁,이동일,정용운,유근양 대한전기학회 2005 전기학회논문지C Vol.54 No.3(C)

Big fire such as mountain fire may cause the prevention of the functions of the overhead cables and insulators, which may affect the operation of the transmission lines. In the worst case, this kind of disaster may have a huge effect on the whole industry of a country. However, the study on the effect of the mountain fire on the transmission line is very rare. Therefore, in order to understand the effect of the mountain fire on the polymeric insulator for transmission lines, the author observed the deformation of the sheds of the polymeric insulators and the change of the discs of the porcelain insulators under fire, varying the ignition time using the artificial ignition testing equipment which simulates the mountain fire, and investigated the electrical and mechanical characteristics of the insulators after the ignition test. For the test, the miniature insulators made of polymeric material and porcelain have been utilized. As the result, the following conclusions were obtained. First, the porcelain insulator was degraded in electrical characteristics when the insulator was subjected to the fire for approximately 5 minutes; whereas, the polymeric insulator was not degraded though there were some damage on its sheds. Second, after 20 minute exposure to the fire, the polymeric insulator lost a lot of parts of sheds, but the electrical characteristics was lowered by around 20%, but the porcelain insulators were electrically degraded by more than 80%.

베이지안 방법론을 적용한 154 kV 송전용 자기애자의 수명 평가 개발

최인혁,김태균,윤용범,이준신,김성욱,Choi, In-Hyuk,Kim, Tae-Kyun,Yoon, Yong-Beum,Yi, Junsin,Kim, Seong Wook 한국전기전자재료학회 2017 전기전자재료학회논문지 Vol.30 No.9

It is extremely important to improve methodologies for the lifetime assessment of porcelain insulators. While there has been a considerable amount of work regarding the phenomena of lifetime distributions, most of the studies assume that aging distributions follow the Weibull distribution. However, the true underlying distribution is unknown, giving rise to unrealistic inferences, such as parameter estimations. In this article, we review several distributions that are commonly used in reliability and survival analysis, such as the exponential, Weibull, log-normal, and gamma distributions. Some properties, including the characteristics of failure rates of these distributions, are presented. We use a Bayesian approach for model selection and parameter estimation procedures. A well-known measure, called the Bayes factor, is used to find the most plausible model among several contending models. The posterior mean can be used as a parameter estimate for unknown parameters, once a model with the highest posterior probability is selected. Extensive simulation studies are performed to demonstrate our methodologies.

송전용 애자(Insulator) 기술현황

최인혁,박준영,강동훈,Choe, In-Hyeok,Park, Jun-Yeong,Gang, Dong-Hun 한국전력공사 2016 KEPCO Journal on electric power and energy Vol.2 No.3

질화규소 세라믹볼의 구름피로수명 ( Rolling Fatigue Life of Silicon Nitride Ceramic Balls )

최인혁,박창남,최헌진,이준근,신동우 한국트라이볼로지학회 1999 한국윤활학회지(윤활학회지) Vol.15 No.2