• The Journal of the Korea Contents Association
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• v.1 no.1
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• pp.68-73
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• 2001

The interaction between web site and it's user is more active and free than that of any other interface environment. Consequently, it is very important that user interface environment must be fully considered in web site development process. In this study, first, web interface environment and it's features are examined, then web usability test techniques are analyzed, and on the basis of the results, new tool for visualizing various responses and patterns of web site user is developed. Finally, by applying newly developed tool to usability test process of an internal hub site and analyzing the results, effective methods for visualization and evaluation of using patterns of web site are suggested.

• 한국HCI학회:학술대회논문집
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• 2006.02b
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• pp.191-196
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• 2006

새로운 휴대폰 기기가 하루가 다르게 개발되어 상품화 되는 가운데 사용자의 시각에 입각한 사용성 평가는 앞으로 새롭게 선보일 휴대폰 기기의 방향성을 제시해 줄 수 있는 중요한 척도이다. 특히 근 몇 년간 다양한 기능이 convergence 된 휴대폰들이 늘어남에 따라 사용자 관점에서의 평가 방법에 있어, 실제 사용자는 예측할 수 없고 셀 수 없는 다양한 상황과 환경 속에서 휴대폰 기기를 사용하게 된다는 사실을 주목해야 할 것이다. 따라서 본 연구에서는 끊임없이 변화하는 휴대폰 기기로 인하여 실제 user 가 자신의 특성과 습관, 시시각각 다르게 처하는 환경과 함께 야기되는 휴대폰에 대한 use experience 를 수집하고 분석하는 적합한 방법론을 새로이 제시하고, 이를 사례 연구를 통하여 검증함으로써 사용자 경험을 수집하는데 유용한 새로운 방법론을 개발하는데 그 목적이 있다. 이러한 사용성 테스트의 새로운 분석 방법으로, 특정 휴대폰의 웹 리뷰사이트, 인터넷 동우회와 같은 온라인 커뮤니티상에서 테스트에 응할 여지가 있는 expert user 를 엄선하여 선정 하였으며, 그들에게 휴대폰을 사용하면서 겪게 되는 경험이나 문제점을 휴대폰의 어떠한 부분에서 언제, 어떠한 식으로 발생되었는지에 대하여 work book 의 형식을 통하여 기록하고 다시 그것을 바탕으로 In-depth interview 함으로써 사용자의 경험의 축적에 따라 사용성을 평가하는 프로세스를 새로이 개발하고 적용하였다.

• The Journal of the Korea Contents Association
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• v.13 no.4
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• pp.137-144
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• 2013

As the propagation of smart devices has increased and the variety of the devices also has been diversified, various existing functions are concentrated on these smart devices. One of the phenomena is that the paper-book market has partially transferred into an e-Book market. As the demand of the e-Book has increased over time, the improvement of the types of e-Book on the market can be observed. In this study, the usability evaluation on the interface of the e-Book viewer for the types of application, which can be installed in the smart devices, has been conducted. The items for the usability evaluation of the e-Book were defined, the usage patterns were observed objectively and a questionnaire technique was applied. By analyzing the usability evaluation of e-Book interface, the directions for production and improvement of e-Books have been suggested.

• Journal of Information Management
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• v.25 no.4
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• pp.36-55
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• 1994

This study discussed extensively the CD-ROM evaluation criteria that are necessary for library and information center to acquire the CD-ROM products. The evaluation criteria discussed in previous studies are divided into managerial and technical aspects, and especially the search software and user interface catagories in the technical aspect are investigated separately. Finally the basic checklist is suggested for the evaluation of CD-ROM product in appendix.

• Journal of Software Assessment and Valuation
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• v.15 no.2
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• pp.73-83
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• 2019

Voice Recognition has recently been improved with AI(Artificial Intelligence) and has greatly improved the false recognition rate and provides an effective and efficient Human Machine Interface (HMI). This trend has also been applied in the defense industry, particularly in the aviation, F-35. However, for the quality evaluation of Voice Recognition, the defense industry, especially the aircraft, requires measurable quantitative models. In this paper, the quantitative evaluation model is proposed for applying Voice Recognition to aircraft. For the proposal, the evaluation items are identified from the Voice Recognition technology and ISO/IEC 25000(SQuaRE) quality attributes. Using these two perspectives, the quantitative evaluation model is proposed under aircraft operation condition and confirms the evaluation results.

• Proceedings of the ESK Conference
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• 1998.04a
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• pp.93-98
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• 1998

Recently, consumers are tend to purchase the user-centered designed product using interface enginnering and human factors techniques. Therefore, it is important that the designer's requirements should be analyzed focused on the human machine interface. This paper described the interface usability evaluation technique(suvjective evaluation) for the interface between user and product. This methodology is the integrated interface usbility evaluation method AHP and Conjoint Analysis. AHP(Analytic Hierarchy Process) is a multicriteria decision model to give priority after expressing hierarchically for decision making problem. Conjoint Analysis enduavors to unravel the value, or partworths, that consumers place on the product or service's attributes from experimental subjects' evluation of profiles based on hypothetical products or services. A new usability test methodology proposed by this paper includes techniques jointed both consistency test by AHP and experimental subjective evaluation of profiles by Conjoint Analysis for evaluating the user's emotion and impression.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.21 no.3
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• pp.414-422
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• 1997

The characteristics on the extension of the CED(Crack Energy Density) concept to the interface kinked crack problems in a dissimilar are examined. Each mode contributions of CED are found by symmetric and antisymmetric conponents and domain independent integrals. Finite element calculation is carried out to simulate the interface kinked crack growth on a bimaterial. The focus is the establishment of fracture criterion with CED and finding the orientation of crack extension. From the results, a prediction about the extension behavior of an interface kinked crack can be done. And we show that CED can be a parameter to indicate fracture criterion at an interface kinked crack.

• Proceedings of the Korea Multimedia Society Conference
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• 2004.05a
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• pp.533-537
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• 2004

고도 정보사회의 진전에 있어 정보의 수집, 정보의 전달 등을 위해, 여러 IT기기가 사용 되어지고 있다. 이러한 상황 속에서 IT기기를 장애자나 고령자를 포함, 누구나가 쉽게 이용 할 수 있도록 하는 유니버설디자인은 매우 중요한 일이다. 특히 상체부자유자의 인터페이스 장치로서 시선입력장치가 주목 받고 있다. 이러한 시대적인 흐름에서 본 연구에서는 Eye-gaze Interface를 이용한 시선입력만으로 컴퓨터상에서 한글입력이 가능한 한글 입력 시스템을 개발 제안한다. 또한 본 연구의 목적으로는 기존의 키보드, 마우스에 의한 입력장치와 Eye-gaze Interface를 이용한 입력 장치와의 정점과 단점을 비교 분석하고, 정보 사회에 있어서의 장애자와 고령자들의 Barrier Free에 관한 연구를 기본 목적으로 하고 있다 본 연구의 Eye-gaze Interface는 Eye Tech Digital System회사의 Quick Glance System를 사용한다 장애자와 고령자를 대상으로 한 사용자 평가 실험에 의해 실험을 진행 하였으며, 한글의 음운규칙에 관한 연구를 기초로 한글뿐만 아니라 영어, 일본어가 입력 가능한 입력 시스템을 제안한다. 이것은 컴퓨터 조작이 곤란한 장애자와 고령자가 일반인과의 자연스러운 커뮤니케이션이 가능하도록 한 것이다. 향후 Eye-gaze Interface를 이용한 응용분야 또한 게임, 영상, Eye Book, 자동차운전 둥 다양한 분야에 적용 가능하리라 기대된다.

• Archives of design research
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• v.13 no.2
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• pp.103-109
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• 2000

Rapid prototyping technology has been widely applied to the design process in the industry. This technology made it easy to generate a prototype which acts like a real product in logic. However, this technology has not been validated sufficiently as a usability test method. The purpose of this study was to test the hypothesis : There was no significant difference between a real product and its prototype. An experiment was designed to test it statistically. a microwave oven was selected and its prototype was generated using a rapid prototyping tool. Six subjects used the microwave oven and another six subjects used the prototype to perform five scenario tasks. As a result, there was significant difference between the real product and prototype in success rate, task completion time, and number of buttons pressed. The prototype was more difficult to operate than the real product. Therefore we should be careful when we apply rapid prototyping. technology. In the discussions, the causes of the difference were identified and some guidelines were suggested for who wants to apply rapid prototyping tool to the usability test.

• Journal of The Korean Society of Agricultural Engineers
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• v.64 no.1
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• pp.91-98
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• 2022

Multi-layered geotextile tubes may have problems on its stability when used as cofferdam. This study presents the shear strength characteristics at the interface between geotextiles and a cementitious binder material to improve the stability of the multi-layered geotextile tubes. In this study, two different types of geotextiles are used. After mixing with a rapid setting cement, fly ash, sand, accelerator, and water, the cementitious binder material is prepared at the interface between two geotextile samples and cured under water for a desired period. The specimen is placed on upper and lower direct shear boxes by using clamping systems. A series of direct shear tests for two different geotextiles are performed along the curing time under three vertical stresses. Experimental results show that the shear strength at the interface between the cementitious binder material and geotextiles is greater than that at the interface between two geotextiles. For two types of geotextiles, apparent cohesion occurs at the interface between the cementitious binder material and geotextiles. In addition, the friction angles for any curing time are improved, compared to the interface between two geotextiles. The cementitious binder material suggested for the interface between two geotextiles may be useful for the reinforcement of multi-layered geotextile tubes.