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한성호,최성규,이중윤,Han, Seong-Ho,Choe, Seong-Gyu,Lee, Jung-Yun 한국시스템엔지니어링협회 2003 시스템엔지니어링워크숍 Vol.1 No.-
The mission of tilting train development project is enhancing the speed of transportation of railway passenger using existing infrastructure. The threat of this project is the tilting technology is newly incorporated to this project. To overcome the threat this project incorporate systems engineering technology to development tilting train system. The systems engineering process, which was used in this project, was performed in accordance with systems engineering standard EIA632. This paper shows the systems engineering technology which was used to develop the tilting train system specification. This paper also shows the requirement template which was developed to communicate and synthesis various specialty engineering.
한성호,이욱,김재철,Han, Seong-Ho,Rhee, Wook,Kim, Jae-Chul 한국조명전기설비학회 1995 조명.전기설비 Vol.9 No.5
This paper presents a practical approach to evaluate the reliability indices of electric distribution systems. The use of reliability evaluation is placed with framework of distribution system planning and operation. In this paper, the reliability model is based on an analytical method, connecting component failure to load point outage in each section. Five cases are reported in the paper to study the effect of varying failure rates and repair times on real distribution systems. Simulations are preformed by the developed reliability evaluation program.
한성호,이기룡,조창용,김인배,김학민,Han, Seong-Ho,Lee, Gi-Ryong,Jo, Chang-Yong,Kim, In-Bae,Kim, Hak-Min 한국재료학회 1993 한국재료학회지 Vol.3 No.6
주조용 Ni기 초내열 합금인 Rene 80의 고온 크리프타단시 균열의 생성과 전파에 대한 분위기의 영향을 조사하기 위해 $760^{\circ}C$, 675MPa및 $982^{\circ}C$, 157MPa의 크리프시험 조건에서 산화성 분위기인 공기중과 불활성 분위기인 아르곤 가스 분위기에서 크리프 파단시험을 했다. $760^{\circ}C$, 657MPa조건의 크리프 파단시험에서는 분위기에 따라 크리프 파단 양상의 큰 차이가 없었고 파단수명과 파단연신값도 비슷하였다. 반면 $982^{\circ}C$, 157MPa의 시험에서는표면산화의 영향으로 공기중의 경우 표면균열 생성과 입계를 통한 균열전파에 의하여 크리프 파단이 진행되었으나, 아르곤 분위기에서는 내부입계에서 균열이 생성되어 표면에서 발생된 균열과 합체됨으로서 파단이 진행되었다. 파단수명은 공기중의 경우가 치밀한 표면산화물의 형성에 따라 아르곤 하에서 보다 길었으며 파단연신은 아르곤 분위기의 경우가 네킹 발생에 따라 크게 나타났다. The effects of atmosphere on the creep rupture properties of Ni-base superalloy Ren6 80 were investigated. Creep rupture tests were performed at $760^{\circ}C$, 657MPa and 982%, 157MPa under Ar gas atmospheres. Creep rupture mode and rupture properties (rupture life and elongation) were similar in two different atmospheres under the condition of $760^{\circ}C$, 657MPa. However, the results at $982^{\circ}C$, 157MPa showed different creep rupture mode and life between air and Ar gas atmospheres. In air, it was shown that creep cracks were initiated at surface-exposed grain boundaries and propagated along grain boundaries. In Ar gas atmosphere, the cracks were initiated at inner grain boundaries and coalesced to surface cracks which cause cup-and-cone type fracture. Due to protective oxide layer formation, air test showed longer rupture life than Ar test.
한성호,Han, Seong-Ho 대한인간공학회 2001 大韓人間工學會誌 Vol.20 No.1
This study introduces the concept of image/impression of a product design, human interface elements, and the relationships between them. It is assumed that the human interface can be decomposed into detailed design elements, called human interface elements. This study attempts to build functional relationships between the image/impression of a product and human interface elements. Two different human factors experiments were conducted to demonstrate the effectiveness of the approach suggested in this study. A total of 35 audio/visual consumer electronics products (e.g., CD players, VCRs) were shown on a display screen and the subjects were instructed to evaluate them in terms of eight image/impression dimensions. One experiment was conducted using Korean subjects while the other using American subjects. The functional relationships were modeled by using the multiple linear regression technique. Similarity and difference between the Korean and the American subjects were analyzed. The approach suggested in this study is expected to help designers and developers identify important design variables to enhance the subjective satisfaction of a product design.
한성호,송용수,Han, Seong-Ho,Song, Yong-Su 한국시스템엔지니어링협회 2004 시스템엔지니어링워크숍 Vol.4 No.-
Abstract Tilting train has been developed to increase the oprational speed of the trains on conventional lines which have many curves. This train are tilted at curves to compensate for unbalanced carbody centrifugal acceleration to a greater extent than compensation produced by the track cant, so that passengers do not feel centrifugal acceleration and thus trains can run at higher speed at curves. This paper developed PDM(product data management) to make a system engineering of TTX(Tilting Train eXpress) with maximum operation speed 180 km/h.
한성호,최성규,Han, Seong Ho,Choi, Sung Kyu 한국시스템엔지니어링학회 2009 시스템엔지니어링학술지 Vol.5 No.1
Korean Tilting trains have been tested on conventional lines since the beginning of 2007 for evaluating its reliability. We achieved some major performance tests which are the maximum operation speed, 180km/h test and the maximum curves increasing speed, over 30 percentage comparing with non-tilling operation train. In order to analysis reliability data of tilting train, we have used the special system engineering frame with interfacing between component suppliers effectively. And also we have developed the data aquisition system which consists of monitor, sensors and depot computer etc. As a results of calculation, until now we realized that the reliability are getting more increasing than starting point of running field test.
한성호,김범수,Han, Seong-Ho,Kim, Beom-Su 대한인간공학회 1999 大韓人間工學會誌 Vol.18 No.3
As speech is the human being's most natural communication medium, using it gives many advantages. Currently, most user interfaces of a computer are using a mouse/keyboard type but the interface using speech recognition is expected to replace them or at least be used as a tool for supporting it. Despite the advantages, the speech recognition interface is not that popular because of technical difficulties such as recognition accuracy and slow response time to name a few. Nevertheless, it is important to optimize the human-computer system performance by improving the usability. This paper presents a set of guidelines for designing speech recognition interfaces and provides a method for evaluating the usability. A total of 113 guidelines are suggested to improve the usability of speech-recognition interfaces. The evaluation method consists of four major procedures: user interface evaluation; function evaluation; vocabulary estimation; and recognition speed/accuracy evaluation. Each procedure is described along with proper techniques for efficient evaluation.