Earticle

스마트폰 사용자 수의 급격한 증가와 더불어 스마트폰 애플리케이션의 활용 빈도수가 증가하고 있다. 스마트폰 애플리케이션 산업의 활성화로 다량의 애플리케이션이 출시되고 쉽게 업로드, 다운로드 할 수 있는 스마트폰 애플리케이션의 장점으로 손쉽게 탑재된 다종 다수의 애플리케이션은 스마트폰 인터페이스의 사용성을 저하시키는 실정에 이르렀다. 이에 본 연구자는 스마트폰 인터페이스의 사용성을 높이는 방안으로 3D GUI 디자인을 제안하였다. 제안된 3D GUI 디자인은 Path 형태의 공간으로 구성되었으며 복도를 따라 사용자가 기 명명한 방을 접근하고 애플리케이션을 선택, 사용하는 방식이다. 본 연구자가 개발한 Path 형태의 3D GUI 디자인은 기존 2D GUI에 비해 정보 접근성이 좋으며, 정보획득에 필요한 시간을 단축하고 방대한 자료를 단일 페이지에 저장할 수 있는 등의 장점 가지고 있다.

The frequency of smartphone Application usage has been increased with the growth of the smartphone user number. As smartphone application industry has been populated, many kinds and numbers of smartphone application, which are easy to upload and download have been a decline in the interface usability. Therefore, to improve usability of smartphone interface, Path Style 3D Environment GUI Design is proposed. The 3D GUI design consists of Path style space, in which the user navigates through Z-axis with zoom in and out, and selects a room named before to use application. Path Style 3D Environment GUI Design can be easy to approach the information, decreased time consuming, and stored much quantity of mass information in a screen than 2D GUI.

모바일 디바이스의 발전으로 인해 사람들에 대한 정보와 자원의 교환 및 공유를 보다 손쉽게 하였으며, 컴퓨팅 기술과의 결합으로 모바일 컴퓨팅을 이용한 서비스에 대한 관심이 증가되고 있다. 또한 이에 관한 많은 연구들이 진행 중에 있으며 특히 사용자 개개인의 성향과 상황에 맞는 추천 서비스의 필요성은 더욱 더 필요한 실정이다. 본 논문에서는 개개인의 성향과 적절한 추천 서비스를 제공하기 위해서 사용자의 현재 상황을 인식한 뒤 각각의 사용자에 따른 능동적 추천 서비스를 위해 각 개인의 프로파일을 분석하여 추론 및 분석을 통해 서비스를 도출할 수 있는 상황인식 프로토타입을 제안하였다.

The development of mobile devices and the spread of wireless network help share and exchange information and resources more easily. The bond them to Cloud Computing technology help pay attention to “Mobile Cloud” service, so there have been being a lot of studies on “Mobile Cloud” service. Especially, the important of ‘Recommendation Service’ which is customized for each user’s preference and context has been increasing. In order to provide appropriate recommendation services, it enables to recognize user’s current state, analyze the user’s profile like user’s tendency and preference, and draw the service answering the user’s request. Most existing frameworks, however, are not very suitable for mobile devices because they were proposed on the web-based. And other context information except location information among user’s context information are not much considered. Therefore, this paper proposed the context-aware framework, which provides more suitable services by using user’s context and profile.

Normal zone propagaton(NZP) properties were investigated on Bi-223/Ag tapes and prototype HTS cable. NZP experiments in tape were conducted in temperatures from 45K to 77K in zero field. Prototype HTS cable was molded using epoxy and the experiments were carried out under adiabatic condition in LN$_2$. NZP velocities in tapes with tow conditions of DC and AC currents were almost same at each temperature. NZP velocity in prototype HTS cable was 1.9-2.4 cm/sec in LN$_2$. Numerical analysis was carried out by a one-dimensional equation of heat balance. The simulation results of NZP velocity in Bi-2223/Ag tapes were similar to the experimental results.

The purpose of this study is to develop the Korean-style tractors for agriculture with international competative advantage meeting consumer needs. In order to perform this program, we induce the suitable design procisses through provide customer-oriented product design processes with academic and practitional guides from an objective design development systim by using appropriate sampling and statistic methods.