심인성 소양증환자와 만성 담마진환자의 스트레스지각과 통제소재 및 우울증상과의 관계

이영호,고대관,한기석,정영조,김용상,임성춘,남기흠,김중호,Lee, Young-Ho,Ko, Dae-Kwan,Han, Ki-Seok,Chung, Young-Cho,Kim, Yong-Sang,Lim, Sung-Chun,Nam, Ki-Heum,Kim, Chung-Ho 한국정신신체의학회 1995 정신신체의학 Vol.3 No.2

For investigating a disease specific psychological mechanism in various dermatological disorders, we tried to explore the difference in correlation among stress perception, locus of control as a coping strategy, depressive symptoms and pruritic symptoms in the patients with psychological pruritis and chronic urticaria. The subjects were composed of 32 patients with psychol-ogical pruritis and 67 patients with chronic urticaria(subject group), and 25 patients with organic pruritis and 59 patient with major depression(control group). Global assesment of recent stress scale(GARS), I-E locus of control scale, Beck Depression Inventory(BDI) and medical college of wisconsin center pain follow up questionnaire were used for assesement. The results were as follows: 1) There were a significant positive correlation between stress perception and depressive symptom in patients with psychological pruritis, chronic urticaria, and major depression but not hi organic pruritis. 2) In relationship between locus of control and depressive symptom, patients with psychological pruritis, organic pruritis, and major depression except chronic ruticaria showed a significant negative correlation. 3) For intensity and pattern of pruritis, there were positive relations with depressive symptom and stress perception only in patients with chronic urticaria. Above results indicate that stress perception and locus of contorl may play a significant role in the formation of psychological and dermatological symptoms in psychological pruitis and chronic urticaria. But the mechanisms of these processes are different in either disorder.

비외상성 피질하 뇌혈관 질환 환자에서 인지기능, 정신행동 증상 및 일상 생활 기능간의 상관에 대한 연구

이영호,박영수,최홍,최영희,고대관,정영조,박병관,김수지,정숙희,고병희,송일병,박건우,이대희,Lee, Young-Ho,Park, Young-Soo,Choi, Hong,Choi, Young-Hee,Ko, Dae-Kwan,Chung, Young-Cho,Park, Byoung-Kwan,Kim, Soo-Ji,Chung, Suk-Hai,Ko, Byoung-Hee,So 한국정신신체의학회 1996 정신신체의학 Vol.4 No.2

Objective : This study was tried to investigate the specific relationships among cognitve function, neurbehavioral symptoms, and daily living functions, as well as provide the guidline of more proper clinical approches for patients with subcortical cerebrovascular disease. Objects and Methods Subjects were 85 patients whose diagnosis was confirmed by brain CT or MRI and controls were 195 normal persons matched by educational level with the subjects. The cognitive functions were evaluated by BNA(Benton neuropsychiatric assessment), subjective neurobehavioral symptoms by SCL-90-R(Sympton Check List-90-Revised), objective neurobehavioral symptoms by NRS(Neurobehavioral Rating Scale), and daily living function symptoms by NRS(Neurobehavioral Rating Scale), and daily living function by GERRI(Geriatric Evaluation by Relative's Rating Instrument) and IADL(Instrumental Activities of Daily Living Scale). Results: 1) Subjects showed significantly lower cognitive functions than controls in all tests of BNA except Lt-Rt Orientation Test(p=0.09) and facial Recognition Test(p=0.186). 2) In subjective neurobehavioral symptoms, subjects showed significantly lower scores in all symptoms except anxiety(p=0.059), hostility(p=0.159), and phobic anxiety(p=0.849). But in objects neurobehavioral symptoms, subjects showed significantly higher in scores in psychoticism (p=0.000) and neuroticism(p=0.025) of NRS. 3) The score of social functioning of GERRI(p=0.000) and that of IADL(p=0.000) were significantly higher in subjects than in controls. 4) for correlation between cognitive and daily living functions, there were significant correlations between the scores of all items on BNA and the score of cognitive or social function of GERRI and the socre of MDL in corntrols, whereas in subjects, there were significant correlations only between the scores of BNA and the score of IADL. 5) for correlation between neuroehavioral symptoms and daily living functions, there were significant correlatons between the socre of subjective neurobehavioral symptoms and the scores of all subscales of GERRI and the score of MDL in controls. On the contrary, in subjects, there were significant correlations between the score of social function of GERRI and the score of objective neurobehavioral symptoms such as psychoticism, agitiation-hostility, and decrease d motivation-emotional withdrawl. Conclusion : Above results suggest that disturbances in specific function of brain may play a role as a predictor of impairments with specific daily living functions and also suggest that specific correlations among various functions may be useful as clinical parameters for setting of the treatment goal and for assessing the ongoing process in the treatment and rehavilitation of the patients with subcortical cerebrovascular disease.

Broadband Convergence Network 가입자 망 설계 시스템 연구

이영호,정진모,김영진,이순석,박노익,강국창,Lee, Young-Ho,Jung, Jin-Mo,Kim, Young-Jin,Lee, Sun-Suk,Park, No-Ik,kang, Kuk-Chang 한국경영과학회 2006 經營 科學 Vol.23 No.2

In this paper, we consider a network optimization problem arising from the deployment of BcN access network. BcN convergence services requires that access networks satisfy QoS meausres. BcN services have two types of traffics : stream traffic and elastic traffic. Stream traffic uses blocking probability as a QoS measure, while elastic traffic uses delay factor as a QoS measure. Incorporating the QoS requirements, we formulate the problem as a nonlinear mixed-integer Programming model. The Proposed model seeks to find a minimum cost dimensioning solution, while satisfying the QoS requirement. We propose two local search heuristic algorithms for solving the problem, and develop a network design system that implements the developed heuristic algorithms. We demonstrate the computational efficacy of the proposed algorithm by solving a realistic network design problem.

고령화 사회 환경 변화에 대응하는 정보통신 산업 비즈니스 모델 설계

이영호,김영욱,김영진,김혜원,이정민,Lee, Young-Ho,Kim, Young-Wook,Kim, Young-Jin,Kim, Hye-Won,Lee, Jeong-Min 한국경영과학회 2006 經營 科學 Vol.23 No.3

In this paper, we develop the business model of telecommunication company that facilitates to explore new business opportunities on aging society. Considering the trend of aging society, we analyze the market drivers of senior market. Analyzing market dynamics and value chain, we design a set of business models for telecommunication company. In addition, we describe the evolution path of the proposed business model in terms of technology development and market. Finally, we develop a framework for evaluating the effectiveness of the business model.

간이 신경 인지기능 국재화 검사의 개발 I : 고안

이영호,정효경,허시영,고영택,박병관,Lee, Young-Ho,Jung, Hyo-Kyung,Hoe, Si-Young,Koh, Young-Taek,Park, Byung-Kwan 대한수면의학회 1999 수면·정신생리 Vol.6 No.2

Recently, with increasing the number of patients with head injury and cerebrovascular accident, there has been an increasing need for the useful assessment tools of brain dysfunction and it's localization. With the advances in the neuroscience since the mid-1970s, particularly in the areas of neuroanatomical tracing, neuroimaging, and improved behavioraltest design, it has been possible to develop a more precise understanding and localization of brain dysfunction. However, these equipments are not readily available in the private clinics and too expensive to use as a screening tool to all suspected patients with brain dysfunction. Although several screening tests such as Mini-Mental States Examination(MMSE) or Brief Cognitive Rating Scale(BCRS) are simple in use and useful for the brief assessment of brain dysfunction, these are also limited in using for localization of brain dysfunction because of their simplicity. With increasing need of the assessment tool which is able to localize the dysfunction more precisely in the clinical practice, we planned to develop the new assessment tool, the Bedside Neurocognitive Function Localization Test(BNLT) which is suitable for this purpose. The BNLT was designed to be utilized for localizing brain dysfunction effectively and readily in the clinical practice. We introduced the whole process of designing the BNLT in this manuscript.

지르코늄 합금 관의 임계좌굴 압력 산정을 위한 최소안전율

김형규(Hyung-Kyu Kim),김재용(Jae-Yong Kim),윤경호(Kyung-Ho Yoon),이영호(Young-Ho Lee),이강희(Kang-Hee Lee),강흥석(Heung-Seok Kang) 대한기계학회 2011 大韓機械學會論文集A Vol.35 No.3

얇은 관 탄성좌굴 공식의 불확실성을 고려하기 위해, 공식을 구성하는 파라미터인 튜브재료의 탄성계수, 푸아송 비, 튜브 두께 및 지름의 불확실성을 분석하였다. 본 연구는 원자로에서 연소되는 핵연료봉과 같이 사용 중 함몰을 엄격히 방지하고 있는 얇은 관의 설계신뢰도를 향상시키는 데에 중요하다. 분석 방법은 각각의 파라미터가 변화할 수 있는 범위를 충분히 포함할 수 있는 최소의 탄성좌굴 안전율을 구하고 이를 선형적으로 합하여 최종의 최소안전율을 구하였다. 최소 안전율에 가장 큰 영향을 미치는 파라미터는 관의 두께로 나타났다. 두께가 얇을수록 더 큰 최소안전율이 필요하며 예로 적용한 지르코늄 합금관의 경우, 두께가 0.254 와 0.87 ㎜ 일 때 최소안전율은 각각 1.547 과 3.487 로 나타났다. We consider the uncertainty in the elastic buckling formula for a thin tube. We take into account the measurement uncertainty of Young’s modulus and Poisson’s ratio and the tolerance of the tube thickness and diameter. Elastic buckling must be prohibited for a thin tube such as a nuclear fuel rod that must satisfy a self-stand criterion. Since the predicted critical buckling pressure overestimated that found in the experiment, the determination of the minimum safety factor is crucial. The uncertainty in each parameter (i.e., Young’s modulus, Poisson’s ratio, thickness, and diameter) is mutually independent, so the safety factor is evaluated as the sum of the inverse of each uncertainty. We found that the thickness variation greatly affects the uncertainty. The minimum safety factor of a thin tube of Zirconium alloy is evaluated as 1.547 for a thickness of 0.87 ㎜ and 3.487 for a thickness of 0.254 ㎜.

Zirconium 합금 관 임계좌굴 압력의 불확실성에 따른 최소안전율

김형규(Hyung-Kyu Kim),김재용(Jae-Yong Kim),윤경호(Kyung-Ho Yoon),이영호(Young-Ho Lee),이강희(Kang-Hee Lee),강흥석(Heung-Seok Kang) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11

Uncertainty of the elastic buckling formula of a thin tube is considered. The measuring uncertainty of Young’s modulus and Poisson’s ratio and the tolerance of the tube thickness and diameter are dealt with. The elastic buckling should be absolutely prohibited for a thin tube like a nuclear fuel rod that should satisfy a self-stand criterion. Since the predicted critical buckling pressure overestimated the actual one observed from an experiment, determination of the minimum safety factor is crucial. The uncertainty of each parameter (i.e., Young’s modulus, Poisson’s ratio, thickness and diameter) is mutually independent, so the safety factor is evaluated as the sum of the inverse of each uncertainty. It is found that the thickness variation strongly affects the uncertainty. The minimum safety factor of a thin tube of Zirconium alloy needs to be from 1.547 to 3.487 for the thickness of 0.87 and 0.254 ㎜, respectively.

콘크리트 충진 FRP 합성교각 내진성능에 관한 실험 연구

이영호,Lee. Young Ho 한국방재학회 2012 한국방재학회논문집 Vol.12 No.4

본 논문은 2가지 형태의 콘크리트 충진 FRP 합성교각의 내진성능을 검증하기 위하여 실험을 실시하였다. 첫 번째 형태의 FRP 합성교각은 FRP를 횡보강 철근 및 거푸집 대용으로 사용한 현장타설식 CFFT 교각이고, 다른 하나는 FRP로 보강된 모듈을 적층하는 프리캐스트식 CFFT 교각이다. 두가지 형태 모두 FRP에 의한 횡보강의 증가에 따라 압축강도가 향상되며 피복 콘크리트의 손상을 막아주어 내진성능을 향상시킬 수 있다. 본 연구에서는 두가지 형식의 CFFT 교각의 내진성능 검증을 위하여 4개의 실험체에 대하여 실험을 실시하였고, 파괴형상, 반복 횡하중에 대한 연성능력을 평가하고 각 시험체의 강성저하에 따른 감쇠비, 강성 저감과 소산에너지 등을 비교하였다. This paper presents an experimental investigation of seismic performance for two types of concrete filled FRP column using such as concept. The first type is the CFFT with cast-in-place concrete filled within a FRP tube playing the role of form and lateral confinement. The second type is the precast CFFT column using FRP as lateral confinement. Both methods provide improved compressive strength according to the increase of transverse reinforcement and prevent spalling even after failure of the filling concrete confined by FRP, which allows advantageously slow and gradual loss of bearing capacity. Four scale-down specimens were conducted by quasi-static cyclic loading test. The capacities of ductility for cyclic loading was evaluated and the damping ratio, the stiffness reduction and energy dissipation of each test specimen were compared.

수처리기계분야 연구동향

이영호,Lee, Young-Ho 한국유체기계학회 2006 한국유체기계학회 논문집 Vol.9 No.1

하와이 이민과 '인하공과대학'의 설립

이영호,Lee, Young-Ho 한국기록학회 2001 기록학연구 Vol.0 No.3

'Inha University' (Inha Institute of Technology) was founded on April 1954. The establishment of Inha University has several special meanings. First, I tried to examine the establishing process of Inha University in the context of emigrations and nationalist movements. Inha University was established to commemorate the 50th anniversary of emigration to Hawaii, with the seed money of $150,000 which came from the sale of 'Korean Christian Institute' in Hawaii. Korean Christian Institute had taken charge of teaching the children of Korean residents in Hawaii. Rhee Syhngman, the fist president of Republic Korea was the leader in founding Korean Christian Institute and Inha University, but behind him there were donations of both Korean residents in Hawaii and common Korean people of the 1950's. The establishment of Inha University has a nation-wide and national meaning in that the spirit of nationalist movements in Hawaii and donations of Korean people at home and abroad were linked together. Second, I tried to examine the economic and educational policies after the liberation in 1945. In the 1950's Korea planned to set up self-supporting economy with the aid of America. Accordingly, the educational policy had to be considered in view of economic independence, too. 'Inha Institute of Technology' was the result of these national economic and educational demands. Consequently Inha Institute of Technology took a special position of carrying out national policies with the intervention and protection of the Government, including the president Rhee Syungman in person, even though it was neither national not public but private college. Third, I tried to examine the local history of Incheon. How did Inha Institute of Technology come to be built in Incheon? That's because the emigrant ships departed from Incheon. For those Korean emigrants, it is quite natural that the city of Incheon has a symbolic and commemorative meaning. In addition, Incheon is a port city neighboring the capital Seoul and has 'Seoul-Incheon Industrial Complex' in it. Graduates from Inha Institute of Technology were expected to act as competent scientists and technical leaders of that complex. Really Inha Institute of Technology trained many a good technicians with short-term courses and re-educated them after. The history of university has been usually underestimated as that of mere institution. In dealing with the history of Inha University as an example, I tried to re-examine the history of university in the context of Korean history and to emphasize the importance of keeping any all records relating universities.