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.

식사 행동의 신경학 : 섭취에 중점을 맞추어서

이영호,Lee, Young Ho 대한생물정신의학회 1998 생물정신의학 Vol.5 No.2

In mordern society, nutritional and appetite disorders occur in epidemic proportions and are serious health harzards. Obesity and diabetes affect over 30% of American population, while eating disorders, such as anorexia nervosa and bulimia nervosa occur in a growing number of adolescences and young adults. The changes in various sociocultural aspects with the introduction of Westernized culture have had the effect of increasing the risk of same problems in Korea. Disorderd eating patterns are a primary symptom of numerous psychiatric disorders and loss of appetite and cachexia, during illness or in the elderly, preclude proper medical treatment for restoring good health or preserving life. Increased understanding of the systems of the body and brain, related to energy and nutrient balance, may help us to treatment and ultimately prevent these commom disorders. In this review, the author highlights the psychobiological mechanisms or factors which are associated with eating behavior, especially in the view of intake psychobiology. This review would be concentrated on 1) the theoretical concepts and theories of eating behavior ; 2) the psychobiological determinants of food intake ; and 3) the psychobiological control of eating behavior.

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.

마이크로 용적형 수차의 개발에 관한 연구

이영호,최영도,Lee, Young-Ho,Choi, Young-Do 한국마린엔지니어링학회 2006 한국마린엔지니어링학회지 Vol.30 No.2

For the case of high head and critical low flow rate range of micro hydropower resources, it requires very low specific speed turbines which are lower than conventional impulse turbine's specific speed. In order to satisfy the request for very low specific speed turbine with high efficiency, a new positive displacement turbine is developed. The performance characteristics of the new turbine is tested and compared with a conventional impulse turbine, which is used for automatic water faucet system. The purpose of present study is to develop an high performance turbine that can be used to extract micro hydropower potential of a water supply system. The test results show that the positive displacement turbine is much more efficient than the conventional turbine and it can sustain high efficiency under the wide range of operating conditions. The pressure pulsations at the inlet and outlet of the positive displacement turbine can be considerably minimized by using simple pressure damper.

Particle Swarm Optimization을 이용한 2차원 IIR 디지털필터의 설계

이영호,Lee, Young-Ho 한국정보통신학회 2009 한국정보통신학회논문지 Vol.13 No.7

본 논문은 Particle Swarm Optimization(PSO)을 이용하여 2차원 IIR 디지털필터의 설계방법을 제안하였다. 먼저 2차원 디지털필터의 설계문제를 PSO에 적용하기 위하여 최소화 문제로써 형식화 과정이 논의된다. 제안된 PSO 알고리즘을 이용한 설계방법은 기존의 PSO 알고리즘에 IIR 필터설계에서 요구되는 안정성을 보증하는 과정이 검토되어 개선된다. 본 논문에서 제안된 방법의 타당성을 설계예시를 통해 고찰한 결과, 설계된 디지털필터는 동일한 설계사양으로 기존의 설계방법으로 설계된 디지털필터보다 근사오차 면에서 우수한 결과를 얻을 수 있었다. 또한 제안한 설계방법에 의한 2차원 IIR 디지털필터는 설계과정에서 필터의 안정성을 보증할 수 있었다. This paper presents an efficient design method of 2-D infinite impulse response(IIR) digital filter based on a particle swarm optimization(PSO) algorithm. The design task is reformulated as a constrained minimization problem and is solved by our newly developed PSO algorithm. To ensure the stability of the designed 2-D IIR digital filters, a new stability strategy is embedded in the basic PSO algorithm. The superiority of the proposed method is demonstrated by several experiments. The results show that the approximation error of the resultant filters are better than those of the digital filters which designed by recently published filter design methods. The proposed design method can also obtain the stable2-D IIR digital filters.

긴장재를 사용하지 않은 프리캐스트 교각의 내진성능 실험 연구

이영호,송재준,Lee,Young Ho,Song,Jae Joon 한국방재학회 2012 한국방재학회논문집 Vol.12 No.6

본 논문은 PC 텐던 등에 의한 긴장력을 도입하지 않고 일반 철근만을 사용한 프리캐스트 교각의 내진성능을 검증하기 위하여 프리캐스트 교각의 실물모형 내진성능 실험을 실시하였다. 프리캐스트 블록은 축방향 철근 3개를 하나의 홀로 삽입되도록 하여 시공성을 향상시켰다. 프리캐스트 유무와 FRP보강 유무를 실험변수로 하여, 동일한 형상의 3개의 실험체에 대하여 실험을 실시하였고, 파괴형상, 반복 횡하중에 대한 연성능력을 평가하고 각 시험체의 강성저하에 따른 감쇠비, 강성 저감과 소산에너지 등을 비교하였다. 실험결과, 프리캐스트 교각의 시공성과 내진성 및 FRP 보강에 의한 내진성능 향상을 확인할 수 있었다. In this study, the tests of seismic performance for full-scale models of the precast pier were conducted in order to verify the seismic performance of the precast pier using general rebar without introducing prestressing force such as a PC tendon. The constructability of the precast blocks was improved by inserting three rebars on an axis direction into a one hole. The tests for three piers with identical form were carried out, with use of precast and FRP reinforcement as test variables. The ductility for failed shape and cyclic transverse loads was evaluated. The damping ratio, stiffness reduction, and energy dissipation according to reducing stiffness were compared. These tests proved improvement of constructability and seismic performance for precast pier and of seismic performance for FRP reinforcement in their results.

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.

연구논문 : Fe - Mn - 5Si 계 합금에서의 형상기억효과와 ε 마르텐사이트 생성에 미치는 Co 첨가의 영향과 인장변형률의 효과

이영호,백무현,김상주 ( Young Ho Lee,Mu Heun Bak,Sang Ju Kim ) 대한금속재료학회 ( 구 대한금속학회 ) 1991 재료.물성 심포지엄 Vol.- No.-

다중 전송률을 지원하는 VSG-CDMA 역방향 링크 성능 분석

이영호,김항래,김남,Lee, Young-Ho,Kim, Hang-Rae,Kim, Nam 한국전자파학회 2003 한국전자파학회논문지 Vol.14 No.3

본 논문에서는 멀티 미디어 서비스를 지원하는 VSG-CDMA 시스템의 역방향 링크 용량을 전력 제어와 사용자 분포에 따라 두 모델로 가정하여 해석적으로 분석한다. 분석 모델 I은 완벽한 전력제어와 사용자의 균일 분포로 가정하여 블록킹 확률식을 계산하고 1 %의 블록킹 확률에 일치하는 최대 음성과 데이터 사용자수를 산출한다. 분석 모델 II은 전력제어오차와 사용자의 비균일(셀 경계 부분에 위치)분포로 가정하여 분석한다. 모델 I의 분석 결과는 5 MHz의 광대역 VSG-CDMA 시스템 용량의 상한선(upper bound)이며 모델 II의 분석 결과는 시스템 용량의 하한선(lower bound)을 제시한다. 또한 모델 II에서 데이터 활동율과E$_{b}$/N$_{o}$ 값에 따른 사용자 용량을 분석하여 VSG-CDMA 시스템의 성능 개선 방안을 제안한다. In this paper, the capacity of VSG-CDMA system supporting multi-media service in the reverse link is analyzed by considering the two models according to the power control and user distribution. In analysis model I, assuming perfect power control and uniform distribution of users, the equation of blocking probability is calculated and the maximum number of voice and data user is derived in accordance with 1 % blocking probability. In analysis model II, it is analyzed by assuming power control error and non-uniform distribution of users. The result of analysis model I means the upper bound of system capacity in the 5 MHz wideband VSG-CDMA system, and the result of analysis model II shows the lower bound of system capacity. Also, the improved plan of performance for VSG-CDMA system is suggested by the analyzed result according to data activity and the value of $E_b/N_o$ in model II.

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.