• 한국HCI학회:학술대회논문집
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• 2008.02b
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• pp.152-157
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• 2008

The customer satisfaction of WAP service greatly relies on the usability of the service due to the limited display size of a mobile phone and limitation in realizing UI (User Interface) for function keys, browser, and OS (operating system) Currently, a number of contents providers develop and deliver varying services, and thus, it is critical to control quality level of UI in consistent standards and manner. This study suggests usability index evaluation system to achieve consistent UI quality control of various WAP services. The system adopts both top-down and bottom-up approaches. The former concerns deriving UI design components and evaluation checklists for the WAP, based on the usability attributes and UI principles. The latter concerns deriving usability-related evaluation checklists from the established UI design features, and then grouping them from the viewpoint of usability principles and attributes. This bidirectional approach has two outstanding advantages: it allows thorough examination of potential elements that can cause usability problems from the standpoint of usability attributes, and also derives specific evaluation elements from the perspective of UI design components that are relevant to the real service environment. The evaluation system constitutes a hierarchical structure by networking usability attributes, UI guideline which indicates usability principles for each attribute, and usability evaluation checklist for each UI component that enables specific evaluation. Especially, each evaluation checklist contains concrete contents and format so that it can be readily marked in O/X. The score is based on the ratio of number of items that received positive answer to the number of total items. This enables a quantitative evaluation of the usability of mobile WAP service. The validity of the proposed evaluation system has been proved through comparative analysis with the real usability problems based on the user test. A software was developed that provides guideline for evaluation objects, criteria and examples for each checklist, and automatically calculates a score. The software was applied to evaluating and improving the real mobile WAP service.

• Journal of the Korea Institute of Building Construction
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• v.14 no.3
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• pp.244-251
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• 2014

Project Management Information System (PMIS) has not yet fully met needs of the construction industry. Based on the deficiency of the current system, the present study performed a survey to identify a need for mobile PMIS in the industry. The survey revealed that most respondents expect the development of mobile PMIS would contribute to improving the productivity and efficiency of field operations. Based on the survey findings, this study proposes a suite of modules for mobile PMIS, which are focused on construction management, document management, schedule management, and field information management. Mobile PMIS would allow to access from the field through mobile devices by using tablet computers and smart-phones. The study also suggests that the effectiveness of the system can be enhanced by user interfaces that are customized for each module.

• The Journal of Bigdata
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• v.8 no.1
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• pp.1-10
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• 2023

This paper presents the design process of an agricultural data sharing platform intended to address major challenges faced by the domestic agricultural industry. The platform was designed with a user interface that prioritizes user requirements for ease of use and offers various analysis techniques to provide growth prediction for field environment, growth, management, and control data. Additionally, the platform supports File to DB and DB to DB linkage methods to ensure seamless linkage between the platform and farmhouses. The UI design process utilized HTML/CSS-based languages, JavaScript, and React to provide a comprehensive user experience from platform login to data upload, analysis, and detailed inquiry visualization. The study is expected to contribute to the development of Korean smart farm models and provide reliable data sets to agricultural industry sites and researchers.

• Information Systems Review
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• v.20 no.4
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• pp.59-78
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• 2018

With the advent of the various device types and marketing communication, customer's search and purchase behavior have become more complex and segmented. However, extant research on multichannel marketing effects of the purchase funnel has not reflected the specific features of device User Interface (UI) and User Experience (UX). In this study, we analyzed the marketing channel effects of multi-device shoppers using a unique click stream dataset from global online retailers. We examined device types that activate online shopping and compared the differences between marketing channels that promote visits. In addition, we estimated the direct and indirect effects on visits and purchase revenue through customer's accumulated experience and channel conversions. The findings indicate that the same customer selects a different marketing channel according to the device selection. These results can help retailers gain a better understanding of customers' decision-making process in multi-marketing channel environment and devise the optimal strategy taking into account various device types. Our empirical analyses yield business implications based on the significant results from global big data analytics and contribute academically meaningful theoretical framework using an economic model. We also provide strategic insights attributed to the practical value of an online marketing manager.

• 한국HCI학회:학술대회논문집
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• 2006.02a
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• pp.1050-1055
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• 2006

최근 3D 모바일 게임이 이슈가 되고 있다. 휴대폰이 필수품인 시대가 왔고 휴대폰만 있으면 어디서든 게임을 즐길 수 있다는 점 때문에 모바일 게임 산업은 급속도로 발전하고 있다. 그리고 점차 모바일 환경이 하드웨어가 발전하고 3D 가 지원되는 게임 전용폰이 나오면서 모바일 3D 게임이 많이 개발되고 있다. 그러나 휴대폰의 기본 기능은 통화하는 것이니 만큼 PC 에서의 게임이나 플레이스테이션 같은 게임기와는 구조에 차이가 있다. 모바일 환경에서는 휴대폰 버튼만을 사용하여야 한다는 제약이 있다. 그래서 현재 출시된 여거 모바일 게임의 UI 와 기존 PC 게임의 UI 를 비교하고 휴대폰이라는 제한된 환경에서의 도시경영 3D 시뮬레이션 게임을 위한 효율적인 UI 를 만들고자 하였다. 휴대폰에서는 마우스를 사용할 수 없기 때문에 기본적인 게임 조작은 전부 버튼으로 조작할 수 있게 하였다. 그리고 도시경영시뮬레이션 게임이기 때문에 일반 아케이드 게임이나 캐주얼게임에 비해 상대적으로 메뉴가 많고 복잡하다. 그래서 사용자가 설명을 바로 보면서 메뉴를 선택할 수 있도록 메뉴선택은 전부 숫자버튼을 사용하였다. 그리고 사용자가 메뉴를 외우고 있지 않아도 사용가능 하도록 화면 위에 메뉴설명이 같이 나오게 하였다. 사용자는 메뉴별 설명을 보면서 원하는 쪽으로 선택을 하게 된다. 지역설정에서는 마우스의 드래그기능이 안되기 때문에 처음시작점과 끝부분을 선택하여 마우스를 대신하였다.

• Journal of The Korean Association of Information Education
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• v.16 no.4
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• pp.409-418
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• 2012

In recent years many people are changing their mobile phones from feature phones to smart phones because huge number of useful smart phone applications are released onto the market everyday. Development of smart phone applications could be very helpful educational contents for technologically gifted children who has lots of curiosity and creativity. For this reason this paper deals with development of smart phone application UI(User Interface) layout education programs for the technologically gifted children. These education programs which can operating under Android-based smartphone, have been developed by using JAVA and Eclipse. Survey from the technologically gifted children education experts has been analyzed by Delphi method to figure out effectiveness of the developed education programs.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.05a
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• pp.709-711
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• 2018

Although the supply of smartphones by the silver generation has increased in recent years, low learning, experience levels and understanding make it difficult to use them. In thid paper, we proposes remote control UI applications to support the use of smartphones by the silver generation. For the proposed application, the key features of the feature phone are arranged in a $3{\times}2$ arrangement on the Home screen to enable quick recognition and proposed application provides remote control via Node.js server and socket communication, in case of difficulties in the use of incidental function, increases the understanding and availability levels of the silver generation using smart phones by providing support through remote control.

• Journal of the Ergonomics Society of Korea
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• v.31 no.4
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• pp.593-599
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• 2012

Objective: This study aims to implement a non-contact gesture-based interface for presentation purposes and to analyze the effect of the proposed interface as information transfer assisted device. Background: Recently, research on control device using gesture recognition or speech recognition is being conducted with rapid technological growth in UI/UX area and appearance of smart service products which requires a new human-machine interface. However, few quantitative researches on practical effects of the new interface type have been done relatively, while activities on system implementation are very popular. Method: The system presented in this study is implemented with KINECT$^{(R)}$ sensor offered by Microsoft Corporation. To investigate whether the proposed system is effective as a presentation support tool or not, we conduct experiments by giving several lectures to 40 participants in both a traditional lecture room(keyboard-based presentation control) and a non-contact gesture-based lecture room(KINECT-based presentation control), evaluating their interests and immersion based on contents of the lecture and lecturing methods, and analyzing their understanding about contents of the lecture. Result: We check that whether the gesture-based presentation system can play effective role as presentation supporting tools or not depending on the level of difficulty of contents using ANOVA. Conclusion: We check that a non-contact gesture-based interface is a meaningful tool as a sportive device when delivering easy and simple information. However, the effect can vary with the contents and the level of difficulty of information provided. Application: The results presented in this paper might help to design a new human-machine(computer) interface for communication support tools.

• Journal of rehabilitation welfare engineering & assistive technology
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• v.6 no.1
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• pp.37-43
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• 2012

We conducted a user-centered usability testing on the Android-based Mobile Augmentative Alternative Communication(AAC) Software. In this paper, we examined functionality, satisfaction, and ease of information searching for a specific function using a task scenario, and we investigated appropriateness of development purposes, contents, instructional strategies, usability, functions of management mode, and user interface of the mobile AAC to the communication needs of children who are nonverbal. We also examined user requirements, preference, satisfaction, and other personal opinions for the mobile AAC using an open feedback. In addition, we investigated users' preference for the size of mobile devices using 4.3", 5.0", and 7.0" mobile devices.

• 한국HCI학회:학술대회논문집
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• 2006.02b
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• pp.345-350
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• 2006

거울은 자동적인 시각적 피드백이라는 특성으로 특별한 조작을 요구하지 않는 인간의 친숙한 도구이다 디지털 기술의 발달로 우리는 빚과 정보를 함께 전달하는 거울에 대한 여러 가지 접근들을 보아왔지만, 이와 관련된 제품화는 아직 초기단계이다. 또한, 거울의 기본적 특성에 정보가 표현되는 것이 기능적인 측면에 초점이 맞춰져 있어서, 사용자 관점의 정보 표현방식이나 조작에 관련된 인터페이스가 필요하게 되었다. 본 논문은 디지털 거울에서 사용자 관점의 정보 표현방식과 조작 인터페이스 요소 추출을 위한 기반조사로써, 거울과 사용자와의 거리에 따른 사용자의 거울 사용행태와 니즈를 알고자 하는 것을 목적으로 한다. 이를 위하여 일반 전선거울을 보는 사용자의 관찰조사를 실시하고, 이를 바탕으로 거리의 기준을 잡아 태스크를 정리한 후, 주어진 디지털 정보에 대하여 사용자의 거울 사용행태 및 니즈를 추출한다. 연구 결과를 토대로, 향후 디지털 거울에서 사용자 관점의 다양한 정보 표현방식과 조작 인터페이스 요소의 적용 가능성을 Digital Mirror UI 제안을 통해 살펴본다. 나아가 추출된 사용행태 및 니즈의 분석을 통해 정보의 표현방식과 정보조작방식의 방향을 예상할 수 있다.