• Proceedings of the Korea Information Processing Society Conference
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• 2016.04a
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• pp.344-347
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• 2016

유비쿼터스 환경 시대에 맞춰 현재 스마트 디바이스의 발달과 시장의 확대로 스마트 미디어 기기의 보급이 급속도로 확산되고 있으며 많은 교육용 어플리케이션 또한 개발되고 있는 중이다. 이러한 교육용 어플리케이션들은 지식기반사회의 학습도구로서 지식접근 및 창출에 중요한 요소인 인터넷과 웹을 활용하게 되고 이동성과 편의성을 추구하는 모바일기기를 통해 학습이 가능하도록 지원하는 프로그램이다. 본 연구는 모바일러닝 기반의 '창의적 문제해결(CPS, Creative Problem Solving)' 모형을 활용하는 교육용 앱에 대한 설계방안을 제시하고자 하며 연구의 목적은 대학 교육에서 학생들의 창의적 사고와 문제해결능력 향상을 돕는 모바일러닝 기반의 학습환경을 설계하는 데 있다. 제안하는 학습지원 도구는 모바일 앱 형태로 제작되며 학습활동에 있어 다양한 창의적 사고과정 활동과 표현방식, 상호작용성 등의 기능을 통해 학습자의 고차원적인 사고능력을 향상시키는 인지적 도구로서 활용될 수 있도록 설계하였다. 개발환경은 안드로이드용 앱 인벤터 프로그램을 사용하였으며 앱 인벤터 서버환경에서 제공되는 컴포넌트와 이벤트 핸들러를 이용하여 교수자모드와 학습자모드의 앱을 각각 설계하였다. 교수자 앱은 학습활동 제공을 의미하는 프로바이더(Provider) 모드 기능이 포함되며 학습자 앱은 CPS 활동을 위한 학습활동 모드 기능이 설계된다. 대부분의 창의성 관련 앱들은 그래픽작업을 통한 두뇌활동 향상 프로그램, 체험활동 위주의 프로그램 등으로 출시가 되어 있으나 교수-학습 활동을 위한 창의적 문제해결활동 관련 앱은 존재하지 않는 상태이므로 수업활동에서의 활용측면에서 가치가 있을 것으로 기대된다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2011.06a
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• pp.96-97
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• 2011

In these days many korean people have much interested in oceanic sports and oceanic leisure equipment.. However, the current condition for the marine leisure in korea are not advanced even worse than wnderdeveloped countries.. Recently several suggestion for vitalization on the marine leisure industry and preparations of the laws & the regulations for marine leisure.. This paper suggest the new marina model using ubiquitous sensor network to reduce the risk of the policy and the investment in the filed og marine leisure industry.

• Journal of Korea Spatial Information System Society
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• v.11 no.1
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• pp.189-194
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• 2009

With the rapid development of information and telecommunication technologies, the adoption of ubiquitous technologies is increasing for the realization of new effective u-City services. u-City is defined as a next-generation informatization city that can innovate a city's various functions, such as improving the welfare of the citizenry, ensuring safety based on systematic urban management, improving the quality of lives, and increasing convenience in city life, by merging cuttingedge information and telecommunication infrastructures and ubiquitous information services with urban space. There is therefore a need to recognize that a successful u-City implementation strategy involves developing the previous UIS into a ubiquitous technology-based UIS and integrating UIS's various urban informations with effective u-City services. In this paper, for UIS-based u-City implementation, the intelligent integration model of urban spatial information based on interoperability is proposed.

• Archives of design research
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• v.19 no.2 s.64
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• pp.333-342
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• 2006

Consumers have paid attention to various functions of PC's nowadays from its efficiency in the past. This study set limits to adapted computers by consumer needs for their residence facilities and ubiquitous environment in our society. The purpose of this study is to suggest high potentialities of adapted computers and it's design for materializing house ubiquitous system. It has come out from analyzing PC market. The result is that Barebone PC, a kind of set PC, could be one of the most actual way for materializing house ubiquitous system. This study suggests many potentialities of Barebone PC which invites modular system. The existing Barebone PC is a kind of semimanufactures, however the new Barebone PC in this study is a expanded concept of modular system that connected to the area of the electric home appliances. This is inspected by analyzing the relation among potentialities and impotance of set PC design and module.

• Journal of KIISE:Software and Applications
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• v.31 no.11
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• pp.1483-1495
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• 2004

Recently, new computing technologies are emerging from various life environments, as a result of the spread of network environments and the advent of new computing devices. This trend in computing technology is called "Ubiquitous computing" and is being developed to provide a convenient lifestyle through the dynamic integration of physical objects and digital information. The hybrid tag interface suggested in this paper is a usage model that integrates widely used image codes and recently applied RFIDs in various applications. On the basis of this concept, we eventually designed five different models such as Dual, Partial, Relative, Rebind and Discrete types according to their interrelation. In this paper, the characteristics of tag interfaces in the form of image codes and RFIDs are analyzed and the hybrid tag interface is proposed here for more efficient and convenient interface.

• Journal of Korea Multimedia Society
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• v.10 no.5
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• pp.623-630
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• 2007

With the development in IT technology and with growing demands of users, a ubiquitous environment is being made. Because of individuals identification is important in ubiquitous environment, RFID, a technology used frequently. RFID, a technology that radio frequency identification, reader send signer, then tag provide user information. RFID has various strengths, such as high recognition rates, quick recognition speed, but Eavesdropping is possible and problem that user information is revealed happens. To solve this, study is proceeded with activity, but, because of low-cost passive tag is limited operation capability, usually used hash function and random number. Also updates value that is used to present session and uses in next session. Therefore, this scheme protects user privacy using random number. And this sheme can offer synchronization by creating variable value without updating value.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.6 no.1 s.12
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• pp.58-71
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• 2007

The disabled and elderly people have a wide variety of functional impairments. By disability and elderly user group definition, identification of users needs and specification of content requirements were studied. Existing technologies including location, navigation and information exchange devise and communication systems were analyzed to design proper integrated system for indoor and outdoor uses. There are two types of services considered in the project: assisted living services(ALS) including health and emergency needs and assisted mobility services(AMS) with transportation needs. To develop each content, content identification and requirements was studied through interviews and expert consultations. System requirements and specification using usecase technique for disabled and elderly people are discussed.

• Proceedings of the Korean Information Science Society Conference
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• 2006.06a
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• pp.382-384
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• 2006

유비쿼터스 시대에 진입하면서 시장은 편의성과 휴대성을 점점 요구하고 한 장치에서 다양한 기능들을 수행할 수 있는 "all-in-one" 제품을 지향하고 있다. 특히 mp3player, 동영상 레이어 같은 멀티미디어요소는 모바일 디바이스에서 빠질 수 없는 기능이 되었다. 그러나 디바이스가 다양한 기능을 수행하게 될수록 내부의 하드웨어들은 더 많은 전원을 필요로 하고 있지만, 휴대성이 강조되는 모바일 디바이스에서 전지의 발전 속도가 모바일 디바이스에서 요구되는 전원모델을 충족시키지 못하고 있다. 따라서 전원 관리는 모바일 디바이스의 휴대 시간 증가를 위해서 매우 중요한 사항이 되었다. 본 논문에서는 임베디드환경의 모바일 멀티미디어 플랫폼에서 전력을 통합적으로 관리 할 수 있는 시스템 구현에 대해서 기술한다. 어플리케이션이 요구하는 전력공급 시스템을 설계하고, 이를 응용프로그램에서 제어할 수 있는 통합 소프트웨어인 디바이스 드라이버와 API를 설계하여 현재 산업계에서 요구하는 middle & high range 제품군(Smart Phone/PMP/DMB 등)에 최적화된 전력 관리 솔루션을 제공하고자 한다.

• Journal of Internet Computing and Services
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• v.11 no.2
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• pp.173-184
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• 2010

The advancement of ubiquitous networks facilitates and increases access to the Internet via mobile devices, which offers the advantages of enhanced mobility and accessibility. While Mobile Internet is largely free of temporal and spatial restrictions, producing content for mobile websites is a challenging work due to the existence of multiple device types and markup languages. This paper proposes a technique that makes use of image maps to improve the visual consistency of mobile web content displayed on a variety of mobile devices. The proposed image map method captures several objects comprising the webpage into a single image, and provides the image in Mobile Web services. Mobile devices employing the proposed method can reorganize webpages with multiple objects more easily and obtain the visually identical content on their screen.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.28 no.4
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• pp.1021-1030
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• 2018

Nowadays, the ubiquitous environment that can utilize the computer everywhere is being formed. As the environment changes, services develop and manage systems and databases that can manage customer information to provide better services to customers through Information Technology. The system that most services maintain is a way of putting and managing customer information on the server. In this paper, we first find the problem in terms of security and convenience. After that, we propose a solution that improves the problem through blockchain technology and biometric authentication.