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.

생체 리듬과 음식 섭취

이영호,Lee, Young-Ho 대한수면의학회 1998 수면·정신생리 Vol.5 No.1

Living organisms are influenced by many external rhythms and they have adapted their physiology to periodically changing conditions. These adaptive strategies are controlled by endogenous innate programs of behavior and physiology which are determined by external signals ("Zeitgeber"). There are many biological rhythms, each with its own characteristic functional adaptation. Among them, the presence of endogenous time control of feeding and drinking becomes obvious. There are increasing evidences that the control of food intake, food selection, and drinking are regulated by the endogenous rhythms including a circadian rhythm. However, there have been many restrictions in understanding the endogenous control of food intake itself and its mechanism. To broaden our know ledges of the endogenous time control of feeding and drinking, the author reviwed the characteristics of the endogenous timing for food intake, the influence of circadian pacemakers and food-entrainable oscillators, the interaction between the circadian control and the external and internal conditions in the control of food intake, the conseqences of feeding, the circadian control of food selection, and the biological cycles in energy balance.

현상학이란 무엇인가

이영호,Lee, Yeong-Ho 대한출판문화협회 1988 출판저널 Vol.23 No.-

엔터프라이즈 아키텍처 도입요인에 관한 실증적 연구 : Technology-Organization-Environment 프레임워크를 중심으로

이영호,채명신,Lee, Young-Ho,Chae, Myung-Sin 한국경영과학회 2006 經營 科學 Vol.23 No.2

Interest in EA has been Increasing recently, however, with the coming into effect from July 2006 of the 'Information Technology Architecture Act' which requires the public sector to adopt EA. Until now, the study of EA has been focused on concepts and methodologies for the adoption of EA. The fundamental issue, however, the study on the factors affecting the adoption of EA, has rarely been explored. This thesis therefore surveyed which factors have affected the adoption of EA. The analysis found that the adoption of EA was affected by the external environmental characteristics such as rules or regulations and the level of competition in the Industry concerned, and by the organization's information technology level. However, technological aspects such as perceived usefulness or perceived ease of use - traditionally considered as critical factors in adopting information technology - were found to be less influential. These results show that in Korea we still do not regard EA as a method of optimizing the IT resources of a company. In order for EA to be widely adopted, therefore, we should Put primary emphasis on efforts to properly appreciate its technological aspects, such as its technological usefulness or convenience.

하악골 실험병소에 관한 방사선학적 연구

이영호,안형규,Lee Young-Ho,Ahn Hyung-Kyu 대한영상치의학회 1987 Imaging Science in Dentistry Vol.17 No.1

The purpose of this study was three-fold: to reexamine whether periapical and central lesions can be detected on the radiograph when they are in the cancellous bone, to investigate regianal differences in radiograph visualization of the lesion, and to. compare the interpretation of radiagraphs by densitometric analysis with the visual interpretation af the same radiographs. Forty-nine apical lesions and eighty-two central lesions were made in 8 mandibles and radiographed serially while being enlarged and deepened. All radiagraphs were evaluated by three dental radiologists. Each lesion was scored of 3 to 0, based on the radiographic appearances. Special radiographs of 15 apical and central lesions were analysed by densitometer and the results were compared with the scores which were previously assigned by three examiners. From this study the following conclusians could be drawn; 1. Experimental lesions confined to cancellous bone were detected an the radiagraphs in 41.3% of the cases. 2. Visualization of periapical lesions in cancellous bone was more apparent than that of central lesions in cancellous bone. 3. Visualization of the periapical lesions confined to. cancellous bane was highest in molar teeth, and detection of the central lesions in alveolar portion was easier than those in lower portion of mandibular body area. 4. It was possible to detect the experimental lesions without cortical plate involvement in 78.6% of the all lesions. 5. Densitometric analysis of radiographs could reproducibly distinguish bone changes, especially of central lesions in cancellous bone.

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.

의료분야의 가상훈련 기술 동향

이영호,최종명,김선경,고영혜,Lee, Yeong-Ho,Choe, Jong-Myeong,Kim, Seon-Gyeong,Go, Yeong-Hye 한국정보처리학회 2022 정보처리학회지 Vol.29 No.2

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.

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.

ePRO-OMP: OpenMP 응용 프로그램의 성능 및 에너지 분석 도구

이영호,김지홍,Lee, Young-Ho,Kim, Jihong 대한임베디드공학회 2011 대한임베디드공학회논문지 Vol.6 No.5

As chip multiprocessors have been widely adopted in embedded systems, achieving both high performance and low power consumptions of parallel applications becomes challenging. In order to meet these requirements, it is crucial for developers to analyze the performance and energy consumption of parallel applications. In this paper, we propose a tool for profiling and optimizing the performance and energy consumption of OpenMP applications (energy PROfiler and analyzer for OpenMP: ePRO-OMP). The main advantage of ePRO-OMP is that it can analyze both the performance and energy consumption of each parallel region of an OpenMP application, which can help developers find the bottleneck of parallel applications in detail.