프로 축구팀의 임파워먼트가 조직몰입에 미치는 영향

최명수 대구경북체육학회 2007 체육연구 Vol.3 No.2

[살며 믿으며] 두 교회 팻말이 나란히 걸린 우리집

최명수 새가정사 1995 새가정 Vol.- No.-

A Proof of Utkin's Theorem for ITSMC with Output Prediction of Second Order Uncertain Plants

최명수,이정훈 대한전기학회 2023 전기학회논문지 Vol.72 No.5

In this paper, a complete proof of Utkin's theorem is presented for the ITSMC(integral terminal sliding mode control) of second order uncertain linear plants when ∆b≠0. The addition of integral action to the TSMCs so called the ITSMC enhances performance in both transient and steady states. Therefore, proof of Utkin’s theorem is essential for ITSMC systems. There are five approaches to designing ITSMCs; control input transformation, sliding surface full transformation, and three sliding surface part transformations, which is for first time pointed out in this paper. The invariance property of the Utkin’s theorem applies only to the first two transformations. Specifically, the sliding mode equation, i.e., the sliding surface, remains invariant for the first two transformations. However, the invariance property of Utkin’s theorem can not apply to the three additional sliding surface part transformations, although they serve as design and stabilization approaches. The sliding surface full transformation first appears in the TSMCs, except in [32], while the three sliding surface part transformations appear for the first time in the TSMCs. This paper includes research on the first three transformations, and further studies will cover the last two sliding surface part transformations. This paper presents three transformation methods that achieve the same performances as those obtained through output prediction, predetermination, and predesign. Through an illustrative example and simulation study, the usefulness of the main results is verified.

보강된 쉘구조의 동적 비선형해석

최명수,김문영,장승필 한국지진공학회 2001 한국지진공학회논문집 Vol.5 No.3

보강된 판 및 쉘구조의 동적 비선형해석을 수행하기 위하여, 유한회전을 고려한 변형된 쉘유한요소를 이용하여 total Lagrangian formulation이 제시된다. 전단구속 (shear locking) 현상과 가상의 제로에너지 모우드를 동시에 제거하기 위하여 가정변형도 개념을 채용한다. 탄소성해석에서는 return mapping 미해rithm이 쉘구조의 붕괴 해석에 적용된다. Newmark 직접적분법을 사용하여 동하중 및 지진하중을 받는 쉘구조의 동적 비선형해석 결과를 제시한다. For the dynamic nonlinear analysis of stiffened plate and shell structures, total Lagrangian formulation is presented based upon the degenerated shell element considering finite rotation effects. Assumed strain concept is adopted in order to overcome shear locking phenomena and to eliminate spurious zero energy mode. In the elasto-plastic analysis, the return mapping algorithm based on the consistent elasto-plastic tangent modulus is applied to collapse analysis of shell structures. Newmark integration method is used for dynamic nonlinear analysis of shell structures under dynamic forces.

4세대 이동 멀티미디어 시스템의 연구동향 분석

최명수,박형준,박남철,김경호,이성로 목포대학교 정보산업연구소 2000 情報産業硏究誌 Vol.8 No.-

In this paper, we first define 4th-generation multimedia systems that play an important role in 21C information society. Nest, we investigate and analyze the international trend of the related research and then predict the evolutionary model for 155Mbps wireless mobile multimedia systems.

한국여성문제 시론 ( 지방행정 1953 년 3 월호 , 제 2 권 , 제 3 호 )

최명수 대한지방행정공제회 1953 地方行政 Vol.2 No.3

기관내 삽입 후에 발생한 후두육아종 4예

최명수,장성원,김정배,홍영호,김훈 중앙대부설한국의과학연구소 1990 한국의과학 Vol.22 No.1

Further Studies of A Proof of Utkin's Theorem for ITSMC of Second Order Uncertain Plants

최명수,이정훈 대한전기학회 2023 전기학회논문지 Vol.72 No.10

In this paper, the two sliding surface part transformations are investigated for ITSMC (integral terminal sliding mode control) of second-order uncertain linear plants when the input gain uncertainty of the system is not zero i.e. ∆b≠0 as the further study of [33] and as the alternative methods of [33]. As highlighted in [33], the realm of designing ITSMCs encompasses five distinctive approaches: control input transformation, sliding surface full transformation, and three variations of sliding surface part transformations. While the discussion on the first three methods has been comprehensively covered in [33], this paper centers its focus on the previously unexplored last two transformations. These latter two transformations are presented as novel alternatives to the approaches detailed in [33]. The initial three transformations, as elucidated in [33], demonstrate a performance wherein the real output can be effectively predicted through the utilization of solutions derived from the ideal sliding dynamics. These solutions are thoughtfully pre-designed and predetermined through the application of the ideal sliding dynamics. This paper significantly contributes by presenting a comprehensive exploration of the last two transformation methods, achieving performance on par with the first three transformations described in [33]. These final two sliding surface part transformations stand as noteworthy design methodologies for ITSMCs with the same performance as in [33], offering alternative avenues in contrast to those laid out in [33]. The practical value of our key findings is effectively demonstrated through an illustrative example and an extensive simulation study, thereby underscoring the pertinence and applicability of our research outcomes.

인터넷 스포츠쇼핑몰의 e-CRM 요인이 관계효과에 미치는 영향

최명수,김봉경 한국체육과학회 2007 한국체육과학회지 Vol.16 No.2

The purpose of this study was to establish a theoretical basis for relationship marketing exercised in the internet sports shoppingmall and to empirically analyze effect of e-CRM factor on relationship performance. The questionnaire gathering was requested to secure top, a professional internet research organization. 306 questionnaires, collected by a data screening process with the on-line survey for panels satisfying the requirements based on the panel databases, were used for this study. Results from the analysis are as follows.First, according to the test result on the between e-CRM factor and performance of the relationship, e-CRM factor had positive effect on repurchase intention. Sedcond, according to the test result on the between e-CRM factor and performance of the relationship, e-CRM factor had positive effect on relationship maintenance intention.Third, according to the test result on the between e-CRM factor and performance of the relationship, e-CRM factor had positive effect on word of mouth.This paper attempts to e-CRM factor that internet sports shopping mall should make customer relationship performance by recognizing the importance and value of customer-related marketing. Utilizing this relationship, it must establish the marketing strategy which can increase the sales and benefit of the enterprise in a very competitive environment.

이차 불확실 플랜트의 터미널 슬라이딩 모드 제어를 위한 Utkin 정리의 증명

최명수,이정훈,김정규 대한전자공학회 2023 전자공학회논문지 Vol.60 No.4

In this note, a complete proof of Utkin's theorem is presented for the TSMC(terminal sliding mode control) of second order uncertain linear plants when . In the previous works of the TSMCs, the proof is rare and done when . The Utkin’s invariance theorem with respect to the two transformation methods so called the two diagonalization methods is proved clearly and comparatively for second order uncertain linear systems when . With respect to the two transformations i.e. the sliding surface transformation and control input transformation, the equation of the sliding mode i.e., the sliding surface is invariant. Among the two transformations, the sliding surface transformation for the first time appears in the TSMC. By means of the two transformation methods the same performance results can be obtained. Through an illustrative example and simulation study, the usefulness of the main results is verified. 본 연구에서는 이차 불확실 선형 플랜트가 일 때, 터미널 슬라이딩 모드 제어를 위하여 Utkin 정리의 완전한 증명을 제시한다. 터미널 슬라이딩 모드 제어의 기존 연구에서는 Utkin 정리의 증명을 찾기어렵고, 일 때 수행되었다. 소위 두 대각화(Diagonalization)) 방법이라는 두 변환(Transformation) 방법에 대하여 Utkin 불변 정리를 이차 불확실 선형 플랜트가 일 때 분명하게 그리고 비교적으로 증명한다. 두 변환 방법 즉 제어입력 변환과 슬라이딩 면 변환에 대하여, 슬라이딩 모드 수식 즉 슬라이딩 면은 불변하다는 사실을 분명히 밝힌다. 두 변환 방법 중 슬라이딩 면 변환은 터미널 슬라이딩 모드 제어에서 처음으로 나타나며, 두 변환 방법에 의하여 같은 성능 결과를 얻는다. 설계 예와 시뮬레이션 연구를 통하여 주 연구 결과의 유용성을 입증한다.