• Journal of the Korean Operations Research and Management Science Society
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• v.17 no.2
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• pp.45-54
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• 1992

It become increasingly important to design user interface to carry low complexity. The cognitive limitations of users severely restrict utility of highly intelligent but complex modern systems. Since humans are known to use schemas to reduce cognitive complexity, imposing good consistency to an interface design that may help that user form useful schemas will provide powerful control over the complexity. This present a research effort to develop a quantitative method for evaluating interface complexity that the user would experience planning his or her course of action. Taking into account the user's potential schemas, a quantitative measure based on information theory was develped to assess the navigational complexity. This approach does not rely on the subjective judgment of the researcher as most schemes dealing with user schemas do. The proposed method may benefit the rapid prototyping approach to design a better user interface by allowing handy assessment of the design.

• Nuclear Engineering and Technology
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• v.51 no.2
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• pp.453-462
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• 2019

Mental workload (MWL) is a major consideration for the user interface design in nuclear power plants (NPPs). However, each MWL evaluation method has its advantages and limitations, thus the evaluation and control methods based on multi-index methods are needed. In this study, fuzzy comprehensive evaluation (FCE) theory was adopted for assessment of interface designs in NPP based on operators' MWL. An evaluation index system and membership functions were established, and the weights were given using the combination of the variation coefficient and the entropy method. The results showed that multi-index methods such as performance measures (speed of task and error rate), subjective rating (NASA-TLX) and physiological measure (eye response) can be successfully integrated in FCE for user interface design assessment. The FCE method has a correlation coefficient compared with most of the original evaluation indices. Thus, this method might be applied for developing the tool to quickly and accurately assess the different display interfaces when considering the aspect of the operators' MWL.

• Journal of the Ergonomics Society of Korea
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• v.29 no.4
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• pp.661-665
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• 2010

Current subway station's office employee must perform safety management tasks by monitoring the various safety management systems. But these monitoring systems are limited in effective situational awareness and response to a state of emergency immediately. It is necessary to develop an integrated safety management system display. In this study, we developed subway station safety management system's (CCTV, fire detection & alarm system, screen door control equipment) integrated prototype display with ecological interface design framework and evaluated prototype display interface's usability with GOMS model. The result was that the ecological interface's performance was better than existing safety management system's interface.

• Archives of design research
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• v.13 no.4
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• pp.105-114
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• 2000

Since the apple company adopted the desktop-office metaphor in Macintosh, the metaphoric interface has been used generally in multimedia products or services, on which user-friendly knowledge, conception, and images are represented metaphorically. Although the metaphor can be employed as one of ways to identify the essence or pattern of information, a theoretical framework on its relation with the user interface is not fully established. In this study, the user interface considered as a core of multimedia design was discussed, and the form of the graphic metaphor was investigated. The seven forms of the graphical metaphor presented herein would be applied as one of approaches to the user interface in relevant researches.

• Journal of Information Management
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• v.33 no.2
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• pp.1-17
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• 2002

This paper investigates the user interface design principles and evaluation methods with the corresponding examples. Some of these principles are: 1) focus on the users and their tasks, not the technology; 2) consider function first, presentation later; 3) conform to the users' view of the task; 4) do not complicate the user's task; 5) promote learning; 6) deliver information, not just data; 7) design for responsiveness; and 8) try it out on users, then fix it. In addition, this paper deals with the general human computer interaction issues as the basis for introducing the user interface design principles.

• Archives of design research
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• v.12 no.2
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• pp.171-182
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• 1999

This study aims to clarify the nature and properties of multimedia interface design, and to identify direction of multimedia interface design research. It also focuses on forecasting boundaries and major trends in current researches on multimedia interface design. The two jargons, 'interface' and 'interaction', are distinguished clearly to show the definition and boundary of multimedia interface. The multidisciplinary nature of multimedia interface design is identified as a result of examination and analysis on major researches. Nine research cases have been selected and categorized into two directions as the theoretical approach and the technical approach. Major characteristics of each case are examined in terms of subjects and methodologies. Findings on current states of the multimedia interface design research are: $\circled1$increasing importance of contextuality; $\circled2$emerging tendency for perceiving the content as one of interacting subjects; $\circled3$providing idiomatic interface context; and $\circled4$paying much attention to the meaning of minor actions. Those findings can be possible as a result of expansion of boundary of multimedia content with rapid distribution of multimedia in recent years. The study concludes that further researches can be activated on the basis of the concept of content-based multimedia interface.

• 한국HCI학회:학술대회논문집
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• 2006.02a
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• pp.257-265
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• 2006

다양한 정보기기들의 복합화 형태로 진화하는 차세대 텔레매틱스 시스템에서는 운전자의 안정성 확보와 workload 감소가 중요한 이슈로 대두되어 Interface의 단순화, GUI Interaction의 극복 등의 대한 문제해결이 중요시 되고 있다. 이를 위해 본 연구에서는 사용자의 mental model를 고려한 운전자의 자유로운 navigation을 지원할 eyes-free 기술인 haptic interface를 지원하는 모델 개발을 목표로 기존 haptic interface를 지원하는 기기들의 문제점을 도출하고 차세대 텔레매틱스 시스템의 분석을 통해 기능적 요구사항을 정의하였다. 이를 기반으로 사용자에게 haptic interface를 통한 interaction을 제공함으로써 차세대 텔레매틱스 시스템을 지원하는 conceptual model을 개발하였다. 또한 haptic device design시에 고려되는 평가지표들을 선별하여 평가지표의 계층적 구조도를 작성한 후 AHP평가 모델을 개발하여 haptic device design 시의 중요 고려사항을 도출하고 중요도를 산정하여 초기 design 단계에서의 prototype에 대한 객관적이고 정량적인 평가를 제공하였다.

• IE interfaces
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• v.13 no.4
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• pp.725-737
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• 2000

This paper deals with the design and the development of user interface for a high speed linear programming solving system. The general users' educational and practical requirements are analyzed and the functionalities that should be implemented for the requirements are designed. The user interface of the system consists of various carefully designed built-in commands that perform the functionalities. The names of the build-in commands are chosen to enhance the users' convenience. We also address the various factors that should be considered in the design of the linear programming solvers when integrated with the user interface. As one of user-friendly environments, data input system that can understand user-written arithmetic form is added to our user interface system. Finally, we compare our system with other user interface systems.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2007.05a
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• pp.281-284
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• 2007

Today, in space design boundaries between spaces have become obscure and space images are changed and overlap each other. Moreover, with the digital technology creating more informational spaces with various interactions, the set up of intelligent space has been made possible in reality. As if to deny the law of physical limitation, interfaces are used as main concept in structuring and expressing the spaces. It appears once again when each section is an expressional factor of interfaces and when meanings are produced through the systemization. Here this study analyzes the hybrid action that appear in contemporary space design. At the very moment, interface emerged as an important concept, defining contemporary space design in a very different way and present interface as a new possibility in space.

• Journal of Korea Society of Digital Industry and Information Management
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• v.5 no.3
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• pp.47-57
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• 2009

Computing environments are being more and more various due to the development of technologies. While existing computing environments used for fixed locations or particular purposes by requesting big scale monitors or complicate calculation performance, recent computing environments are used for a variety of locations and for a diversity of purposes by using various devices. Because of the needs, digital device convergence, which emphases portability and mobility, came out. However, almost researches for user interface are performed for big scale monitors or complicate calculation performance until now. By the reason, user interface on each small device is different from others, or is not appropriate for the purpose of small device. Therefore, this research is to design Zoomable User Interface (ZUI) that adapts for small devices by adding the existing user interface on small devices and haptic technologies, and to implement a user interface for PDA devices.