• KSII Transactions on Internet and Information Systems (TIIS)
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• 제3권6호
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• pp.628-646
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• 2009

Users want to browse and search various web contents with mobile devices which can be used anywhere and anytime without limitations, in the same manner as desktop. But mobile devices have limited resources compared to desktop in terms of computing performance, network bandwidth, screen size for full browsing, and etc, so there are many difficulties in providing support for mobile devices to fully use desktop-based web contents. Recently, mobile network bandwidth has been greatly improved, however, since mobile devices cannot provide the same environment as desktop, users still feel inconvenienced. To provide web contents optimized for each user device, there have been studies about analyzing code to extract blocks for adaptation to a mobile environment. But since web contents are divided into several items such as menu, login, news, shopping, etc, if the block dividing basis is limited only to code or segment size, it will be difficult for users to recognize and find the items they need. Also it is necessary to resolve interface issues, which are the biggest inconvenience for users browsing in a mobile environment. In this paper, we suggest a personalized adaptation system that extracts item blocks from desktop-based web contents based on user interests, layers them, and adapts them for users so they can see preferred contents first.

• 한국통신학회논문지
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• 제27권1B호
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• pp.49-55
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• 2002

IMT-2000 이동통신시스템에서는 빠른 전송속도의 지원으로 무선인터넷, 전자상거래 등 많은 응용서비스의 제공이 예상된다. 이들 서비스는 인증, 데이터 무결성, 데이터 암호화, 부인방지 등 높은 수준의 보안기능을 요구한다. 본 논문에서는 IMT-2000의 새로운 보안위협 요소를 분석하고 이에 따른 이동국과 기지국간 무선링크의 성능 분석을 수행하였다. 망 접속보안서비스의 지원에 필요한 무선구간의 신호트래픽은 평균메시지의 길이가 256~768bits, 기본서비스 대비 보안서비스 발생율이 0.2~1.0, 기본서비스의 발생율이 0.2~1.0서비스/호 인 조건에서 최소 0.2kbps에서 최대 4.5kbps로 분석되었다.

• 한국멀티미디어학회논문지
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• 제4권6호
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• pp.562-569
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• 2001

IMT-2000 이동통신시스템에서는 빠른 전송속도의 지원으로 무선인터넷, 전자상거래 등 많은 응용서비스의 제공이 예상된다. 이들 서비스는 인증, 데이터 무결성, 데이터 암호화, 부인방지 등 높은 수준의 보안기능을 요구한다. 본 논문에서는 IMT-2000에서 암호화, 인증 등 망접속 보안기능 제공에 따른 이동국과 기지국간 무선링크의 성능 분석을 수행하였다. 망 접속보안서비스의 지원에 필요한 무선구간의 신호트래픽은 평균메시지의 길이가 256 ~ 768bits, 기본서비스 대비 보안서비스 발생율이 0.2 ~ 1.0, 기본서비스의 발생율이 0.2 ~ 1.0 서비스/호 인 조건에서 최소 0.2kbps에서 최대 4.5kbps로 분석되었다.

• 정보처리학회논문지C
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• 제12C권7호
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• pp.1067-1074
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• 2005

모바일 사용자 인터페이스가, 특히 유비쿼터스 컴퓨팅 환경에서, 정보를 빨리 그리고 편리하게 액세스하는데 중요해지고 있다. 모바일 컴퓨팅 환경에서의 많은 신규서비스들 중에서, 한글1자 도메인명을 포함하여, 한글알파벳(자음과 모음) 도메인명을 이용한 유비쿼터스 정보네트워킹서비스가 연구되었다. 긴 영어나 한글의 URL 스트링 대신에, 정보 액세스를 위한 편리한 사용자 인터페이스로서, 유선 인터넷에서 뿐만아니라 모바일 인터넷에서, 한글1자/자음/모음 도메인명이 정보를 액세스하고 정보를 알리는데 긴 URL스트링보다 더 편리하다. PC뿐만아니라 휴대폰에서 한글1자/자음/모음 도메인명의 편리함을 연구하였고, 음성변환(TTS) 기능을 가지고 있으며 한글1자/자음/모음 도메인명으로 액세스할 수 있는 유비쿼터스 정보포털의 구현과 응용을 소개한다

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 1998년도 추계종합학술대회 논문집
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• pp.47-50
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• 1998

In recent years, it is required that computing support mobile user with computer. The advantage of mobile computing is that users may access all their applications from any location, whether they are in another building or a different state. So, Internet combines with mobile computing technology to make new communication environment for supporting mobility. The research for solving the problem of mobility is actively in progress. This paper describes the implementation of tunneling method for flexible bypass between specific region. Tunneling method provide mobile service to mobile hosts. IP datagram's address tranform method is IP-within-IP encapsulation by which an IP datagram may be encapsulated within an IP datagram. The developed IP-within-IP protocol can provide not only enhanced performance because it is implemented in kernel mode, but also convenience of usage to the application developers because it gives user interface as a dynamic link library. Verification of IP packet tunneling was text file transfer program.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년 학술대회 논문집 정보 및 제어부문
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• pp.464-466
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• 2006

In this paper, we have designed the GUI of the home network system through the home gateway. The GUI(graphic user interface) to achieve the operation be made on an internet and the home appliance in the remote. can be controlled by the mobile.

• 산업공학
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• 제22권4호
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• pp.347-358
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• 2009

Panning tasks caused by both a small screen and the lower resolution of handheld devices are known to decrease the usability of a mobile internet service. To solve this problem, we proposed FTND, an improved version of Tap-N-Drag widely used in various mobile web browsers. 30 participants performed the panning tasks with FTND embedded in combinations of 2 panning directions of Push Background user interface and Push Viewpoint user interface and 5 panning ratios of 100% (a panning ratio of Tap- N-Drag), 300%, 500%, 700%, and 900%. The usability of FTND was assessed by an objective performance and a subjective preference. The objective performance was measured by a task completion time, the number of clicks, and the number of pixels. The subjective preference was measured by satisfaction, accuracy and ease of use. Push Viewpoint user interface at the panning ratios of 300%, 500%, and 700% proved to be the most efficient way for panning tasks with small handheld devices when performing the task by using the right hand thumb.

• 대한임베디드공학회논문지
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• 제6권4호
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• pp.249-254
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• 2011

A user desktop service can be made available on internet or local area network with the help of virtualization and cloud technologies. The service is usually called a virtual desktop or a desktop cloud. However, a user interface is limited to I/O capabilities of a user's mobile terminal. In order to enhance a user interface on a remote virtual desktop, it is important to connect full-featured I/O devices which are founded locally. Our previous work called SoD (System-on- Demand) has proposed a technique to associate local full-featured I/O devices with a remote virtual desktop in Xen. On the technique, it is required to install a SoD client agent in a user's mobile terminal for connecting a remote virtual desktop. In this paper, we propose a new framework called Web-SoD that does not require any explicit installation to make SoD service available. The SoD client agent is provided by the web technology so that the agent can be installed transparently, and the platform independency is also achieved. Due to insufficient network socket performance of current web technologies, we extend Native Client (NaCl) proposed by Google to support a network functionality by modifying a NaCl library and a service runtime. With conducted experiment, we show that the network extension supports a full socket functionality over the compromised overhead on the web environment.

• 정보처리학회논문지A
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• 제10A권5호
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• pp.463-468
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• 2003

인터넷, 특히 모바일 인터넷이 인류사회의 많은 분야, 특히 지식정보의 교환 속도에서 큰 영향을 끼치고 있다. 새로운 지식정보사회는 가치 있는 지식과 정보를 기반으로 한 많은 새로운 서비스 형태를 출현 시킬 것이다. 모바일 환경에서의 많은 새로운 서비스 중, 유선과 모바일 인터넷을 이용해서, 세종대왕이 창제한 한글을 이용한 실시간 전세계 한민족 네트워킹 서비스가 언제 어디에서나 가능하게 되었다. 모바일 환경에서 한글을 이용한 유저 인터페이스를 연구하였고, 또한 한글 도메인 명을 사용하여 실시간 한민족 정보 네트워킹을 실제 구현한 유용한 결과를 새로운 성능분석 메트릭과 함께 소개한다.

• International journal of advanced smart convergence
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• 제6권4호
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• pp.26-32
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• 2017

In this study, we showed understanding and production ability of the interface about internet, operating system, contents, and devices. This study aimed to make a list of 18 items in 4 areas for basic knowledge of UI/UX, establishment of design research, design concept, and design production for 22 sophomore, junior and senior students in IT departments, and the results of understanding were divided into three groups of excellent, normal, and insufficient, and evaluated. It was found that excellent was 18.39%, average was 38.52% and insufficient was 43.07%. Therefore, 18.39% of the students understood UI/UX, and 81.61% of students did not understand UI/UX well. In particular, in the comparison analysis of four areas, the design research area was 44 points, the design content area was 29 points, and the design production area was 11 points which was found to be the lowest. Next, the 10 evaluation items in the mobile UI/UX build guide evaluation were evaluated in the same way as the UI/UX understanding, and the excellent score was 3 points, the average score was 73.3 points, and the poor score was 155 points. The UI/UX build guides showed worse evaluation than UI/UX understanding. Therefore, to cultivate UI/UX understanding and content production ability, UI/UX experts should be fostered with professional course organization and systematic curriculum.