조준경의 안정화 설계에 관한 연구

이만형,백운보,이권순,Lee, Man-Hyung,Baek, Woon-Bo,Lee, Kwon-Soon 한국정밀공학회 1992 한국정밀공학회지 Vol. No.

The heavy vibrations of vehicles on the severe off-road environment degenerate the stabilization proformance of the gunner primary sight. To improve the stabilization performance, the dynamic equations of the gunner primary sight were derived, and the stabilization systems were designed using VSC methods. The performances were compared with the Lead/Lag scheme. In the nonlinear simulation including real disturb ances and couloumb friction, it is shown that the VSC methods exhibit more effective stabilization.

적응 입출력선형화 제어기의 안정성 해석에 관한 연구

이만형,Lee, Man-Hyung 한국정밀공학회 1992 한국정밀공학회지 Vol. No.

In this study, the technique of adaptive control based on certainty equivalence for the input-output linearization of nonlinear system is investigated. It is shown that the upper bound of the parameter estimation error can be represented more explicitly than Teel et al's works. Another direct approach, which stows that the adaptive input-output linearing control laws using the normalized identifier yield bounded tracing, is also presented.

계층화 분석 방법(AHP)을 활용한 청주시 균형발전사업의 상대적 중요도 및 우선순위 분석

이만형(Man-Hyung Lee),전병윤(Byeong-Yun Jeon),최정석(Jeong-Seok Choi) 한국산학기술학회 2021 한국산학기술학회논문지 Vol.22 No.10

본 연구의 목적은 계층화 분석 방법(AHP) 방법을 적용하여 통합 청주시에서 추진하는 균형발전 사업(특별회계)을 대상으로 중요도와 우선순위를 분석하고, 나아가 상위 30개 사업을 도출하여 정책적 시사점을 제시하는 데에 주어진다. 계층화 방법을 적용하기 위해서 청주시에서 추진 중인 균형발전 사업(특별회계)을 대상으로 상위 계층 요인과 하위 계층요인을 도출하였다. 분석의 주요 결과는 다음과 같다. 첫째, 균형발전 사업(특별회계)을 추진할 때에 효율성 측면에서 사업이 장기적으로 중단되는 경우보다는 원활하게 사업을 진행할 방안을 고려해야 한다. 둘째, 하위계층 요인에서 도시 · 생활시설(0.096)과 교통시설(0.093) 관련 요인에 대한 중요도에 따라서 지역주민들이 생활편의와 관련된 시설로서 생활 여건 개선과 도농 간 접근성을 높일 수 있는 교통시설 관련 사업을 고려해야 한다. 셋째, 청주시 구별로 균형발전 사업건수를 구분하면, 청원구가 17개(36%)로 가장 많았으며, 사업유형별로 도시 · 생활시설 사업이 유의미한 고용유발효과를 미친 것으로 분석되었다. This study primarily aims at analyzing the relative importance and priority of balanced development projects (Special accounts) implemented by the Consolidated Cheongju City. Applying Analytic Hierarchy Process (AHP) models, this study derived the top 30 projects and presented a series of policy implications. Both the upper and lower class factors were targeted for the balanced development projects (special account) carried out by Consolidated Cheongju City. The major findings are as follows: First of all, while promoting balanced development projects (special accounts), the government should consider various ways of realizing them more smoothly rather than suspending the project for a long time. Secondly, reflecting upon the importance of indices of urban living facilities (0.096) and transportation facilities (0.093), residents should consider ways to improve the living environment and upgrade accessibility between urban and rural areas. Thirdly, in terms of regional distribution, Cheongwon-gu accounted for 17 projects (36%). Among various project types, the highest number of projects are urban and living facilities projects, exerting a significant impact on employment.

A Study of Stochastic Bilinear System as an Economic Modelling

Man Hyung Lee(이만형),Jong Il Bae(배종일) 대한전기학회 1984 대한전기학회 학술대회 논문집 Vol.1984 No.7

[論文]지방주택정책 독자성을 향상하기 위한 동태적 분석

이만형(Lee Man-Hyung),안재설(An Jae Seol) 한국주택학회 2005 주택연구 Vol.13 No.2

지역이 지방주택정책의 책임성 있는 주체라는 주장은 대부분의 주택문제가 지역적 특수성과 깊은 연관을 맺고 있는 실제적인 측면과 더불어 지방민주주의적 관점에서도 정당하다. 지방 중심의 주택정책체계를 구축하기 위해서는 지방주택정책에 대한 각종 실천전략부터 재점검하여야 하며, 새로운 주택 거버넌스 체계의 구축은 시급한 과제이다. 상의하달식의 전통적인 의미에서의 주택행정 체제를 전면 개편하여, 지방자치단체가 당해지역의 주택부문에 관한 정책결정과 자금운영 권한 및 조직적 역량을 강화할 수 있도록 조처해야 한다. 비슷한 맥락에서, 지방자치단체에서 관할구역내 주택 정책을 지원·관리할 뿐만 아니라, 주택과 관련된 복합적인 민원을 전담할 주택기획담당의 신설도 고려해야 한다. 예산 배정과 전문가 확보를 포함한 준비작업과 더불어 시민단체, 업계를 위시한 주요 이해당사자를 포괄하는 ‘지방주택정책 연구네트워크’를 조속히 구축 할 필요가 있다. 이 연구에서는 또한 지방주택정책을 동태적으로 분석할 수 있는 실증적인 방법론의 하나로서 시스템 다이내믹스(SD) 기법을 응용하여 지방주택정책에 관한 인과지도와 유량-저량 다이아그램을 작성하고, 모의실험을 시도하였다. 청주사례 연구가 시사하는 바 와 같이, 지방주택정책에 관한 지방정부의 독자성을 강화하기 위해서는 일차적으로 시스템 내부적인 변수들의 조정에 의해 당해지역의 동태적인 상태를 적정하게 관리할 수 있는 대안부터 마련해야 한다. 즉, SD 기법을 포함한 동태적인 방법론을 활용하여 지방 주택정책에 관한 이론과 실제의 외연을 체계적으로 확장해야 한다. 이와 함께 , 지방에 사는 사람들의 주택 부문에 대한 실제적, 심리적 격차를 줄이기 위한 방편의 하나로 지역의 주거수준, 경제적인 여건 등을 종합적으로 감안한 새로운 기준의 설정은 불가피하다고 판단한다. 지역을 특성을 고려한 ‘지방맞춤형’ 주택정책은 수도권과 대도시 위주의 현행 기준과 절차에서 탈피하는 데에서부터 본 궤도에 올라설 수 있다. The paper deals in general terms with the role and position of the local government in the field of Korean housing policies. To that aim the key focus is firstly on the theoretical raison detre of local housing policies, departing from the traditional approach heavily hinged on the central government. It argues that for the realization of local housing policy objectives, the ever-widening differences in housing price between the Capital Region and the non-Capital Region have to be reoriented. At the same time, the paper stresses the fact that local autonomy in the housing areas pursued by the local stakeholders is a prerequisite. The remaining question, examined hitherto to only a limited degree, is the extent to which Korean central government can facilitate and encourage more responsive local housing needs. From the dimension of the local government, housing administrative structure has to be reorganized and strengthened. Here the key is not given to the nominal housing quantity issues, rather to the quality ones. As a practical means to analyze local housing policies, the paper depends on System Dynamics(SD) methods. Divulging a series of causal relationship among major housing variables, experimenting with stock-flow diagrams, and testing simulation works, the paper tries to estimate their behavioral patterns. Based on Cheongju example, it confinms that in-depth analyses on the vernacular housing characteristics are one of the most required conditions in upgrading local housing policies.

혁신도시 건설에 관한 동태적 분석

이만형 ( Man Hyung Lee ),김연식 ( Yeon Sik Kim ),김미성 ( Mi Sung Kim ),홍성호 ( Sung Ho Hong ) 한국시스템다이내믹스학회 2007 한국시스템다이내믹스 연구 Vol.8 No.2

In Korean context, the innovative cities imply new towns or urban clusters in the Non Capital Regions, all of which would accommodate the relocated Capital based public organizations. The central government-initiated innovative cities have provoked pros and cons towards their effectiveness and efficacy for the balanced territorial development. From a broader prospective, this paper firstly examines the current status quo of the innovative cities. Based on their master plans, it analyzes physical and non physical factors which would exert significant impact on the innovative cities. Secondly, it pays attention to how key factors strengthen or weaken their behavioral patterns in terms of dynamic location and implementation policies of the innovative cities. Using System dynamics approaches, it sets up couples of scenarios, categorizing between supporting and opposing arguments towards the innovative cities. Lastly, after divulging systematic structure of the innovative cities, it proposes a series of practical alternatives which would contribute to minimizing unexpected side effects or unwanted social cost in the long run. In order to guarantee reinforcing structure of the innovative cities, the paper suggests that QOL (quality of life) variables, which would require continuous investment in the social infrastructure, are pivotal in achieving original goals of the innovative cities. Otherwise, the innovative cities would not be innovative per se. In the worst case, they might be degraded into the unpopular ghost towns.

논문 : 티타늄 음극기지의 양극산화 전해질 농도에 따른 구리전착층 표면 및 전기적 특성에 미치는 효과

이만형 ( Man Hyung Lee ),박은광 ( Eun Kwang Park ),우태규 ( Tae Gyu Woo ),박일송 ( Il Song Park ),윤영민 ( Young Min Yoon ),설경원 ( Kyeong Won Seol ) 대한금속재료학회 ( 구 대한금속학회 ) 2008 대한금속·재료학회지 Vol.46 No.11

Recently, the requirement for the ultra thin copper foil increases with smaller and miniaturized electronic components. Therefore, it is important to examine the surface state of substrate depending on the processing parameter during the anodic oxidation. This study investigated the effect of the various electrolyte concentrations on anodizing of titanium anode prior to copper electrodeposition. Different surface morphology of anodized titanium was obtained at different electrolytic concentration 0.5 M to 3.0 M. In addition, the effect that the surfaces and the electrical characteristics on the electrodeposited copper layer was observed. In this study, surface anodized in the group containing 0.5M H2SO4 shows more uniform copper crystals with low surface roughness. the surface roughness and sheet resistance for 0.5M H2SO4 group were 1.353 μm and 0.104 mΩ/sq, respectively.

공간분석 기법에 기초한 주거지역 공간특성과 주거침입범죄와의 관계분석

이만형(Lee Man-Hyung),김정섭(Kim Jung-Sup),석혜준(Seok Hye-June) 대한건축학회 2007 대한건축학회논문집 Vol.23 No.11

This research focuses on Crime Prevention through Environmental Design(CPTED) method which is recently introduced in Korea. In specific, it investigates context deduction between spatial characteristics and burglaries in residential areas. Its basic analysis tool depends on Space Syntax(SS). This study collects a series of police data on robbery and theft which would be regarded as housing invasion types. It also figures out the key functions of SS variables in terms of connectivity, control value, and integration. In a comparative perspective between crime occurrence sites and non-crime ones, it calculates mean values of SS-related variables using independent T-test. For the in-depth analyses, it matches crime occurrences with various building types. Furthermore, it applies ArcGIS to measure the distances from crime spots to street lights. When this study applies Space Syntax methods to crime occurrences, the average mean values at crime occurrence sites are higher than those at non-crime sites. It implies the fact that building’s main type is pivotal in controlling crime rates. Furthermore, neighborhood facilities with meager territoriality seem extremely vulnerable to crimes. In terms of single detached housing units, it reveals relatively weaker characters in the night-time crime occurrences than those in the day-time ones. In contrast, there exists positive relationship between the distance from street lights and the night-time crime occurrences. All of these indicators imply that the CPTED approach is relevant in designing defensible space in our cities.

프로젝트 파이낸싱 기법에 근거한 복합용도개발의 타당성 분석

이만형 ( Man Hyung Lee ),홍성호 ( Sung Ho Hong ) 충북대학교 건설기술연구소 2007 建設技術論文集 Vol.26 No.1

LULUs와 葛藤管理

李萬炯(Lee Man-Hyung),金東贊(Kim Dong-Chan) 대한국토·도시계획학회 1999 國土計劃 Vol.34 No.3