비정규성 데이터에 대한 단일 관리도들의 비교

강명구,이장택,Kang, Myunggoo,Lee, Jangtaek 한국데이터정보과학회 2015 한국데이터정보과학회지 Vol.26 No.3

품질특성치의 중심과 산포를 하나의 통계량으로 관리하는 단일 관리도는 품질특성치가 정규분포를 따른다고 가정하지만 실제 데이터들은 왜도가 양수이거나 첨도가 양수인 경우가 많다. 본 논문에서는 품질특성치가 정규분포를 따르지 않은 경우에 가짜 알람률 (false alarm rate; FAR)을 이용하여 단일 관리도 성능을 비교하였다. 고려된 단일 관리도는 반원관리도, 최대 관리도 및 평균제곱오차관리도이며 모의실험 결과, 공정이 안정 상태인 경우는 최대관리도의 성능이 좋았으며, 공정이 불안정상태인 경우에는 왜도가 양수일 때 최대관리도, 첨도가 큰 경우에는 평균제곱오차 관리도의 성능이 우수하였다. In this paper, we compare the robustness to the assumption of normality of the single control charts to control the mean and variance simultaneously. The charts examined were semicircle control chart, max chart and MSE chart with Shewhart individuals control charts. Their in-control and out-of-control performance were studied by simulation combined with computation. We calculated false alarm rate to compare among single charts by changing subgroup size and shifting mean of quality characteristics. It turns out that max chart is more robust than any of the others if the process is in-control. In some cases max chart and MSE chart are more robust than others if the process is out-of-control.

광 통신용 1.3μm DCPBH - DFB 레이저 다이오드 제작

강명구,오환술 ( Myung Koo Kang,Hwan Sool Oh ) 한국전기전자재료학회 1997 전기전자재료학회논문지 Vol.10 No.4

유비쿼터스 이동통신 한경 구축 알고리즘 구현에 관한 연구

강명구,Kang, Myoung-Ku 한국정보통신학회 2008 한국정보통신학회논문지 Vol.12 No.10

유비쿼터스 이동통신의 실현을 위해서는 사용자가 의식하지 않고도 통신 서비스를 제공받는 환경의 구축이 필요하다. 본 논문에서는 이를 위한 이동통신 환경 구축 알고리즘을 제안한다. LBS(Location Based Service) 기술을 이용 이동통신 단말기의 서비스 기능 환경을 자동적으로 인지하고, 이동통신 환경에 따른 다양한 사용자의 요청 및 환경에 대한 지속적인 상호 연동을 통한 서비스 제공으로 사용자의 편의를 극대화 하는데 그 목적이 있다. 알고리즘 구현을 위하여 MSC에 이동통신 환경 구축 파라메터에 따라 이동통신 환경을 결정하는 알고리즘을 제안하였으며 이를 C코드로 구현하였다. In order to realize future ubiquitous, it needs to establish an environment witch service is provided to an user without user's awareness. This study suggests the mobile context awareness algorithm for that. With DB collected using LBS technology, it aims to recognize service status of a terminal and to maximize user's convenience by offering service through continuous inter-operability for various demand and environment of users against the status of a terminal. To realize the algorithm, it adds a terminal status deduction process to MSC. And then, it suggests the algorithm witch determines terminal status depending on status parameter defined by analyzing LBS-based short information by MSC. It realize C code.

W-CDMA 통신 시스템에서 새로운 롱 코드 MMSE 검파기 구성 및 성능 분석

강명구,Kang, Myoung-Ku 한국전자통신학회 2011 한국전자통신학회 논문지 Vol.6 No.2

본 연구에서는 지금까지 연구된 레일리 페이딩 하에서 가장 우수한 성능을 갖는 파일롯 채널을 사용한 새로운 롱 코드 MMSE 검파기 구성을 제안하였다. 수신기의 웨이트 벡터(전파진로 안내)의 안정성유지 방법을 분석 설명하였고, 구성한 전파간섭 제거 수신 시스템 동작에서는 신호의 에러를 보상하여 페이딩이 존재하는 채널의 수신된 신호 벡터 왜곡을 좋게 달성하였다. 이러한 수신 신호의 응답 특성은 왜곡이 있을 경우, 컴퓨터 시뮬레이션을 통하여 일반적인 정합 필터보다 더 우수한 것을 보였으며, 본 연구에서 제안한 롱 코드 MMSE 수신기는 페이딩 환경에서 $16{\times}T_b$ 만큼 주기를 만족하게 연장할 수 있다. This study proposed the composition of a new long-code MMSE detector using the pilot channel that demonstrated the most excellent performance under Rayleigh fading in the previous studies. It analyzed and explained how to maintain the stability of the weight vector(introduction to the course of radio waves) in the receiver. In the operation of the receiver system to remove radio interference, the signal vector distortion received in the channel where fading was present achieved good results by compensating for signal errors. When there was distortion, the response characteristics of the received signals were superior to the common matching filter according to the computer simulation. The long-code MMSE receiver proposed in the study was able to prolong the cycle by $16{\times}T_b$ in the fading environment to fulfill the satisfaction.

모바일 상태 결정 알고리즘 구현에 관한 연구

강명구,Kang, Myoung-Goo 한국전자통신학회 2008 한국전자통신학회 논문지 Vol.3 No.1

미래의 유비쿼터스 실현을 위해서는 사용자가 의식하지 않고도 서비스를 제공받는 환경의 구축이 필요하다. 본 논문에서는 이를 위한 이동단말 상태인지 알고리즘을 제안한다. LBS 기술을 이용하여 단말기의 서비스 기능 상태를 자동적으로 인지하고, 단말기 상태에 따른 다양한 사용지의 요청 및 환경에 대한 지속적인 상호 연동을 통한 서비스 제공을 통해서 사용자의 편의를 극대화 하는데 그 목적이 있다. 알고리즘 구현을 위하여 MSC에 단말상태 결정 파라메터에 따라 단말 상태를 결정하는 알고리즘을 제안 하였으며 이를 C 코드로 구현 하였다. In order to realize future ubiquitous, it needs to establish an environment witch service is provided to an user without user's awareness. This study suggests the mobile context awareness algorithm for that. With DB collected using LBS technology, it aims to recognize service status of a terminal and to maximize user's convenience by offering service through continuous inter-operability for various demand and environment of users against the status of a terminal. To realize the algorithm, it adds a terminal status deduction process to MSC. And then, it suggests the algorithm witch determines terminal status depending on status parameter defined by analyzing LBS-based short information by MSC. It realize C code.

주파수 영역에서의 2단 접는 날개 공탄성 해석

강명구,김기언,Kang, Myung-Koo,Kim, Ki-Un 한국군사과학기술학회 2006 한국군사과학기술학회지 Vol.9 No.4

To identify aeroelastic characteristics of wings with double-folding mechanism, aeroelastic analyses are performed. There are four wing models which consist of one linear model and three nonlinear models. The nonlinear models have one or two freeplay nonlinearties. The describing function method is used to approximately examine nonlinear effects. The aeroelastic module in MSC/NASTRAN is used to study the aeroelastic characteristics of the considered wing models. The effects of the folding mechanism and amplitude ratio are examined. As the amplitude ratio increases, the flutter speeds approach to those of the wing model with only one nonlinearity. The numerical results show that the flutter speeds of the wings with double-folding mechanism can be lower or higher than those of the wing model with only one folding mechanism depending upon the direction of the second folding mechanism.

콤팩트시티(압축도시)형 도시재생을 둘러싼 사회적 후생과 개별적 이해 간의 근원적 갈등에 대한 이론적 탐색

강명구(Kang, Myounggu) 한국지역개발학회 2012 韓國地域開發學會誌 Vol.24 No.4

Compact city is an idea that has increasingly been core of urban regeneration strategies in recent years. The critical essence of the compact city includes dense and proximate development; walk, bike and public transportation systems oriented development;and eco-friendly green development. However, it is very hard to accomplish the compact city idea on earth because of inherent conflicts. This paper discusses theoretically the causes of the conflicts. I argue that there are three faces of inherent conflicts over compact city?personal, social and spatial conflicts. First, as income increases, an individual tends to prefer more space, higher privacy, and private transportation (Ellwood & Polinski, 1979; Crotte et al., 2009). The idea of compact city is discord with personal inclination. Second, when a city is compressed to build the city compact, it hence raises housing and real estate price. Real estate price burden decreases the utility of middle and low class (Helsley and Strange, 1995). Society confronts conflicts between landlords and tenants; old and young generation. Third, compact city recommends further concentration of development in a few established areas. This leads to the center-periphery issue - the spatial conflicts between a few established centers and many less developed peripheries within a city, region, or country. Up until now, urban expansion is a natural process which is accord with personal interest. Yet, compact city is an attempt of contracting cities opposing individual inclination. Therefore, to make cities compact successfully, developing supplementary policies to mitigate adverse effects are in need and building consensus of citizens on the ideal of compact city is crucial.

언론학 교육에 있어서 실무와 이론의 이분법을 넘어서 : 서울대 언론학 교육 30년을 중심으로

강명구(Kang Myung-Koo),윤상길(Yoon Sang-Gil) 서울대학교 언론정보연구소 2005 언론정보연구 Vol.42 No.1

지식정보사회로 이행하는 사회적 변화, 정보테크놀로지와 산업의 변화, 저널리즘의 변화 등 언론정보학을 둘러싼 사회환경의 변화는 언론학 교육의 목표와 실천에 커다란 도전이라고 할 수 있다. 이 글의 목적은 서울대학교 언론정보학 학부 교육 30년을 되짚어 봄으로써, 자기 혁신을 어떻게 이룰 것인가를 성찰하는데 있다. 이를 위해 이 글은 지난 30년간 커리큘럼의 변화와 그 거리 큘럼에 대해 학생들이 실제로 어떤 과목을 수강하였는지를 실증적으로 분석하고 기존의 언론학교육을 둘러싼 논쟁, 특히 실무와 이론교육에 대한 논쟁을 살펴보았다. 그 결과, 실무교육에 대해서는 현장이 요구하는 인재의 능력이 무엇인지에 관해 보다 정확하게 규정할 필요가 있으며, 이론중심 교육에 대해서도 대학원에 진학할 학문후속세대를 위한 커리큘럼과 언론과 정보통신 산업 현장으로 진출할 인력을 위한 이론중심 교육을 명확히 구분하고 그 내용을 고민할 필요가 있음을 주장하였다. 그리고 이를 실현하기 위한 하나의 대안으로 실무와 이론교육을 통합적으로 사고하는 형성적 학습과 현장지식 (hands-on knowledge)의 교육을 제시하고자 하였다. Rapidly changing social environments surrounding communication and media studies, such as the advent of a knowledge-information society, changes in information technologies and information industries and changes of journalism, demand responding changes in the realm of communication education. By reviewing curriculum changes of the Department of Communication at Seoul National University between 1975 and 2004, this study aims to discover a way to innovate communication education. This study reviews disputes on the roles of communication education, whether it should more focus on practical knowledge or theoretical knowledge. After comparing pros and cons of educational focus of the two opposing camps, this thesis suggests an alternative way to perceive communication education, which emphasizes 'formative learning' and 'hands-on knowledge' as its important elements. By doing so, this study will offer a way to integrate the two opposing perspectives and overcome the dichotomy.

현행법상 배우자 재산상속제도의 개선방안에 관하여

강명구(Kang Myung Gu) 한국가족법학회 2014 가족법연구 Vol.28 No.3

Entering the 21st century, today's family structure has changed into a nuclear family which is focused around the married couples. That is the social trend which is triggered by the fact that young people don't support their parents anymore. Therefore the inheritance is mostly made up of the assets acquired by joint efforts through divided roles between married couples during their marriage. From this point of view, the theory of the modern inheritance system is entering into espousal inheritance oriented system away from the bloodline family oriented inheritance system. According to the current inheritance legislation, when a married couple put an end to their marriage including one's death, the acquired assets of the couple through into effort of the couple during their marriage is divided among heirs as inheritance by the inheritance legislation without any prior liquidation proceedings based upon a married couple asset system. Therefore the surviving spouse's his or her potential stake-inherit fortune is invaded. In addition, due to the civil law which regulates the inheritance equity, the surviving souse's inheritance equity is only added one half of the other co-heirs, which makes the surviving spouse's equity very instable according to the number of the co-heirs. This side effect is made by the fact that our inheritance system is staying in the old time family oriented inheritance system. The gender equality among the married couple should be respected in accordance with the theory of the equality of the married couple. Even if the title of the asset is put on the husband's name even for the assets formed during marriage through joint efforts by married couple, the title of the asset should be presumed as the joint title of the married couple. Because the surviving spouse's potential stake-inherit fortune should be regarded as an active role to form their joint fortune. The obligation to prove to alter the presumption should be under the person who wants to challenge it. The active legislation to approve the surviving spouse's potential stake-inherit fortune which activated the formation of the married couple's joint assets is deeply demanded. By this activity the husband's labor and the wife's support can be evaluated equally under the gender equality theory. By this activity we can correspond to the Constitution, article 36, paragraph 1 "Individual dignity and an equality of the genders on the basis of marriage and family life should be established, and the country must ensure this right."

주생활부 : 앞으로의 주택생활

강명구 ( Myung Koo Kang ) 대한가정학회 1959 Family and Environment Research Vol.1 No.-