• Ocean Science Journal
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• 제40권4호
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• pp.221-227
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• 2005

The architecture of macrofaunal burrows and the total area of the sediment-water interface created by biogenic structure were investigated in the Donggeomdo tidal flat on the west coast of Korea. Resin casting methods were applied to recover burrows of four dominant species, Macrophthalmus japonicus, Cleistostoma dilatatum, Perinereis aibuhitensis, and Periserrula leucophryna, and whole burrows within the casting area at three sites in different tidal levels. P. leucophryna excavated the largest burrow in terms of a surface area among them. In the case of whole burrow casting, the space occupied by the biogenic structure was extended into deeper and expanded more greatly at the higher tidal level. In the uppermost flat, the burrow wall surface area within sediment was more extensive than the sediment surface area. Increased oxygen supply through the extended interface could enhance the degradation rates of organic carbon and also change the pathways of degradation. Quantifying the relationship between the extended interface and mineralization rate and pathway requires more extensive study.

• 한국통신학회논문지
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• 제30권4A호
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• pp.345-349
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• 2005

본 논문에서는 PC에서 사용하고 있는 주변기기를 연결하기 위한 범용 인터페이스의 성능과 구조를 개선하기 위하여 ATA(AT Attachment Interface with Extension)의 성능 및 SCSI(Small Computer System Interface)의 지능적인 동작의 장점들을 결합한 확장된 ATA 인터페이스를 구현하였다. SCSI버스는 지능적인 동작을 수행하는 주변기기를 위한 버스로써 잘 정리된 명령체계와 안정된 하드웨어 구조를 갖는 우수한 버스이다. 그러나 가격이 ATA주변기기에 비하여 2배 이상 차이나기 때문에 경제적으로 부담을 갖는다. 반면에 ATA주변기기는 초기에는 저성능이었으나, 개선 후 속도 측면에서 SCSI에 근접하고 경제적 측면에서도 우수하다. 본 논문에서는 이와 같은 장점을 이용하여 경제적 특성과 성능을 모두 만족시킬 수 있는 개선된 인터페이스 구조를 제안하고 하드웨어로 구현하였다.

• 한국광학회:학술대회논문집
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• 한국광학회 1989년도 제4회 파동 및 레이저 학술발표회 4th Conference on Waves and lasers 논문집 - 한국광학회
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• pp.242-249
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• 1989

• 한국정보통신학회논문지
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• 제15권2호
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• pp.462-470
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• 2011

음성자동응답시스템(Automatic Response Systems, ARS)은 VUI(Voice User Interface)와 TTI(Touch Tone Interface)를 기반으로 하고 있으며, 현재 가장 널리 사용되는 커뮤니케이션 시스템 중 하나이다. 그러나 많은 사용에도 불구하고, ARS에 대한 불편 사항들이 끊임없이 지적되고 있다. 이는 기술 개발을 넘어, 사용자와 사용성에 대한 체계적인 연구 부족에서 기인한 측면이 있다. 본 논문에서는 ARS 메뉴체계에서의 사용성 저해 요소를 발견 분석하여, ARS 설계를 위한 개선의 지침을 제공한다. 두 개의 인터넷 서점 ARS를 선정하여 피실험자들이 "도서 반품 신청하기"라는 작업을 실행한 후 정해진 설문조사 결과와 인터뷰 내용을 분석하였다. 본 연구에서 메뉴 구조의 복잡성, 메뉴명의 대표성 부족, 사용자 위치인지의 어려움, 메뉴간 이동의 어려움 등 네 가지 문제들을 발견하였고, 이를 피할 수 있는 방법들을 논의하였다.

• 한국농공학회논문집
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• 제50권4호
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• pp.67-75
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• 2008

In construction facilities such as bridges, the fluid boundary layer(or water film) is formed at the structure-soil interface by the inflow into the system due to rainfall or/and rising ground-water. As a result, the structure-soil interaction(SSI) state changes into the structure-fluid-soil interaction(SFSI) state. In general, construction facilities may be endangered by the inflow of water into the soil foundation. Thus, it is important to predict the dynamic SFSI responses accurately so that the facilities may be properly designed against such dangers. It is desired to have the robust tools of attaining such a purpose. However, there has not been any report of a method for the SFSI analyses. The objective of this study is to propose an efficient method of finite element modelling using the new interface element named hybrid interface element capable of giving reasonable predictions of the dynamic SFSI response. This element enables the simulation of the limited normal tensile resistance and the tangential hydro-plane behaviour, which has not been preceded in the previous studies. The hybrid interface element was tested numerically for its validity and employed in the analysis of SFSI responses of the continuous bridge subjected to seismic load under rainfall or/and rising ground-water condition. It showed that dynamic responses of the continuous bridge resting on direct foundation may be amplified under rainfall condition and consequently lead to significant variation of stresses.

• 산업공학
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• 제24권1호
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• pp.1-7
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• 2011

The purpose of this research was to develop an integrated interface for the usability test of systems or products in the design process. It is capable of automatically creating GOMS models which can predict human task performances. It can generate GOMS models to be interacted with the prototype interfaces. It can also effectively manage various design information and various usability test results to be implemented into the new product and/or system design. Thus we can perform usability test for products or system prototypes more effectively and also reduce time and effort required for this test. For usability tests, we established an integrated interface based on GOMS model by the LabVIEW program. We constructed the system that the linkage to GOMS model is available. Using this integrated interface, the menu structure of mobile phone can be constructed easily. User can design a depth and a breath that he want. The size of button and the label of the button is changable. The path to the goal can be defined by the user. Using a designed menu structure, the experiment could be performed. The results of GOMS model and the actual time are presented. Besides, values of operators of GOMS model can be defined as the value that user wants. Using the integrated interface that we developed, the optimal menu structure deducted. The menu structure that user wants can be established easily. The optimal layout and button size can be decided by comparison of numerous menu structures. User can choose the method of usability test among GOMS model and empirical data. Using this integrated interface, the time and costs can be saved and the optimal menu structure can be found easily.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2001년도 추계학술대회논문집 I
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• pp.155-160
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• 2001

Actual engineering structure is frequently very complex, and parts of structure are designed independently by different engineers. Also each structure contains so many degree of freedom. For these reason, methods have been developed which permits the structure to be divided into components or substructures, with analysis being done on a small substructure in order to obtain a full structural system. In such case, because of different mesh size among finite element model (FEM) or different matching points among FEM models and experimentally obtained models, their interfacing points may be non-matching. Solving this non-matching problem is useful to other application such as structural dynamic modification or model updating. In this work, virtual node concept is introduced. Lagrange multipliers are used to enforce the interface compatibility constraint, and interface displacement is approximated by polynomial presentation. The governing equation of whole structure is derived using hybrid variational principle. The eigenvalue of whole structure are calculated using the determinant search method. The number of degree of freedom in the eigenvalue problem can be drastically reduced to just the number of interface degree of freedom. Some numerical simulation is performed to show usefulness of synthesis method.

• 정보관리학회지
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• 제27권3호
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• pp.53-66
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• 2010

디지털 정보환경에서 하나의 단일기능에서 복잡한 복합기능으로 새롭게 발전하고 있는 정보매체의 사용자 인터페이스 특성은 이용의도 향상을 위한 새로운 사용자 인터페이스 평가방법을 요구하고 있다. 본 연구는 정보매체의 인터페이스 특성을 하드웨어 구성요소인 물리적 컨트롤 구조특성과 정보내용의 명확성을 전달하는 콘텐츠 표현 특성으로 구분하여 정보매체의 기술수용관점에서 이용의도 향상을 위해 고려되어야 할 인터페이스 특성에 대해 논의하였다. 물리적 컨트롤 인터페이스, 콘텐츠 표현 인터페이스 특성요인으로 148명의 사용자에 대한 설문내용을 기초로 정보매체의 기술수용과 관련된 인지된 유용성, 인지된 이용 용이성, 그리고 이용의도에 대한 가설을 검증하였다. 연구결과 물리적 구조 인터페이스와 콘텐츠 표현 인터페이스 특성은 인지된 유용성에 유의한 영향을 미치는 것으로 파악되었으며, 정보매체의 이용 의도는 인지된 유용성과 인지된 이용 용이성에 의해 영향을 받는 것으로 밝혀졌다. 본 연구를 통해 사용자 인터페이스에 대한 설계는 디자인 관점에서 접근하기 보다는 성능에 대한 유용성 평가과정 그 자체로서 물리적 구조 인터페이스와 콘텐츠 표현 인터페이스 특성의 중요성을 확인하였다.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2000년도 봄 학술발표회논문집
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• pp.405-412
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• 2000

This paper is the study of methodology for development of interface structure modules for an integrated system or steel framework structures. For development of the modules, it is used that data translation for the Steel Detail Neutral File(SDNF) format and the methodology have contacted individual systems in integrated system. The point of methology is translated system interface data with ASCⅡ format of system output and is presented with EXPRESS-G schema model. In the future, these neutral format will use structural design, engineering, facilities management, fabrication, etc. Therefore such a series of neutral formants is valuable to development of all structure fields.

• Journal of Welding and Joining
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• 제14권4호
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• pp.79-88
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• 1996

For improvement in productivity and weld quality, weld seam tracking and welding parameter control are very essential in the welding of a structure which can not be cxactly fit-up due to mismatch, discontinous gap, deflection, etc.. In this study, an automatic weld seam tracking system is developed for I-butt joint structure, and the system consists of XYZ working table, vision sensor and user interface program. In the developed vision sensor system, an image projection algorithm for weld-line detection and an adaptive current control algorithm for gap variation were implemented. The user interface program developed in this study by basing on the objct oriented concept could provide very convenient way to utilize the tracking system with the pull-down menu driven structure. The developed system showed a good seam tracking and weld quality control capability corresponding to deflected weld lines and gap variations.