Earticle

This paper presents a novel friendly and interactive Chinese character (Kanji in Japanese) learning system to enable elementary school students and foreign people living in Japan and to learn Kanji by an interesting and efficient way. By interacting with the network between the client application for students and the server application for teachers, teachers can grasp circumstances of education of all students in real-time. When students select and input characters they want to learn, the client application checks whether each stroke is unbalanced or not, and it is corrected if unbalanced. If there are no unbalanced strokes, a “Hanamaru” is displayed. On the other hand, the server application has two kinds of display modes, to display circumstances of all students and to display detail circumstances of each student, and teachers can switch them anytime. At the same time, the server takes statistics of points where each student is easy to make mistakes and saves them. So teachers can grasp circumstances and trend of all students. Moreover, pen speed and segment division are introduced in order to extract and correct local features, such as “tome”, “hane”, and “harai”, which were a weak point of previous system in spite of the important point in Kanji education. Segment division is a method that refraction points of each stroke are extracted and each stroke is subdivided by these points and is used to correct “hane” and to distinguish between “ore” and “mage”. For both of them, the correction of local features can be realized and the close correction is enabled. Finally, by using the system actually, this system is evaluated whether it is useful to be able to write and memorize Kanji correctly and the interface is really friendly for learners. As a result, since many students feel interesting and useful to learn Kanji, it is clear that this system is useful for Kanji education. And the interface is also a high appraisal.

Polishing a die that has free-form surfaces is a time-consuming and tedious job, and requires a considerable amount of high-precision skill. In order to reduce the polishing time and cope with the shortage of skilled workers, an automatic polishing robot system was developed. The polishing robot system is composed of two subsystems, a three-axis machining center and a two-axis polishing head. The machining center is controlled by a FANUC controller, and the polishing head by DSP controller. The system has five degrees of freedom and is able to keep the polishing tool normal to the die surface during operation. To easily operate the developed polishing robot system, this study developed an integrated operating program in the Windows environment. The program consists of five modules: a polishing data generation module, a code separation module, a polishing module, a graphic simulator module, and a teaching module. Also, the automatic teaching system was developed to easily obtain teaching data and it consists of a three dimensional joystick and a proximity sensor. Also, to evaluate the performance of the integrated operating program and the polishing robot system, polishing experiments of a die of shadow mask were carried out.

The advancement of the Internet and mobile technology is driving the enablement of the IoT and cloud computing paradigm. However, IoT platforms has security issues because of its centralized system, and the Cloud computing faces technological limitations due to data explosion caused by IoT and the emergence of latency-sensitive application. Blockchain platforms are being developed based on cryptocurrencies because it is in prospect but usage is limited in field of financial. Also the fog computing has not yet been widely used because it is not clear who operates and manages a fog computing infrastructure. In this paper, a user friendly fog computing architecture is proposed to enhance the performance and feasibility of fog computing and mapping identification with IP address to blockchain network..In the proposed architecture, the blockchain records mapping data sevurely and users register their fog device in the fog portal, and the fog portal acts as an intermediary between the resources of each local network and the IoT service.

3차원 공간에서 물체를 재구성하기 위하여 제안된 기존 기법들은 여러 개의 카메라를 사용하거나 여러장의 사진을 촬영하여 물체를 재구성하기 때문에 특정한 하드웨어를 필요로 하거나 촬영 장소에 민감하고 시간이 오래 걸린다는 단점이 있다. 본 논문에서는 유비쿼터스 환경에서 구조광 기법을 이용하여 한 장의 사진의 정보로부터 3차원 물체를 재구성하는 방법을 제안한다. 구조광 기법 적용을 위한 칼라 패턴은 기존연구에서 제안된 것을 사용한다. 본 논문에서는 실제로 객체 재구성 성능에 매우 중요한 줄무늬 패턴 추출과 줄무늬 패턴 매칭에 다양한 영상 처리 기법들로 구성된 파이프라인을 새롭게 제안하고, 패턴 매칭을 위한 최적의 비용 함수를 제안한다. 제안 기법을 통하여 갤럭시 빔과 같은 초소형 프로젝터를 탑재한 스마트폰과 같은 유비쿼터스 혹은 모바일 환경에서 적은 계산 복잡도와 간단한 환경 설정으로 3차원 물체를 재구성하는 것이 가능하다.

Since conventional methods for the reconstruction of 3D objects used a number of cameras or pictures, they required specific hardwares or they were sensitive to the photography environment with a lot of processing time. In this paper, we propose a 3D object reconstruction method using one photograph based on structured light in ubiquitous environments. We use color pattern of the conventional method for structured light. In this paper, we propose a novel pipeline consisting of various image processing techniques for line pattern extraction and matching, which are very important for the performance of the object reconstruction. And we propose the optimal cost function for the pattern matching. Using our method, it is possible to reconstruct a 3D object with efficient computation and easy setting in ubiquitous or mobile environments, for example, a smartphone with a subminiature projector like Galaxy Beam.

본 연구는 사용자 중심 디자인 과정을 디자인 픽션 방법에 적용하여 사용자 친화적인 디자인픽션 방법론을 제안한 연구이다. 디자인 픽션은 미래에 대한 비평적 담론 위에 구상한 예측 시나리오를 디자인의 관점에서 물리적으로 구현하는 방법이다. 이러한 디자인 픽션은 HCI와 인터랙션 디자인 분야에서 미학적 혹은 실험적 접근으로써 많은 관심을 받고 있는 방법이지만 아직 학계에서 완전히 정립되지 않은 생소한 디자인 방법론이다. 특히, 사용자와의 접점을 모색하며 당면 문제를 해결하는 사용자 중심의 관점에서는 다루어지지 않고 있다. 현재의 문제를 기반으로 미래를 예측하며 디자인 관점에서 시나리오를 정립하는 선행디자인이 날로 중요해짐에 따라 본 연구는 그러한 선행디자인을 실험적으로 제시하는 디자인 픽션 방법이 사용자 중심의 관점에서 다루어지는 것이 필요하다고 보았다. 이에 따라, 본 연구에서는 사용자 중심 디자인 프로세스 중 사용자의 행동이나 인지에 직관적이고 직접적인 영향을 주고자 고안된 어포던스 개념을 기존 디자인 픽션의 과정에 접목하였다. 주제와 어포던스 개념을 구체적으로 디자인에 응용하고자 고안된 Design with Intent Toolkit을 시각디자인 전공 3학년 학생들에게 활용하였고, 이를 디자인 픽션의 과정으로 발전시켜 다양한 시각적 결과물을 완성하였다. 이러한 과정을 통해 본 연구는 기존의 비평적, 실험적 영역으로 국한되었던 디자인픽션 방법론외 대안으로 사용자 친화적인 디자인 픽션 방법론을 새롭게 제안하고자 한다.

This study suggests user-friendly design fiction method applying user-centered design process. Design fiction is a method that predicts futures from design perspective with critical discourses and physical representation. It has been regarded importantly in HCI and interaction design realms as aesthetical and experiential approaches, yet not firmly established. Especially, it has not been considered from user-centered perspective which considers users and related problems. Anticipatory design based on current problems which predicts futures and defines design-oriented scenario is becoming significant. Therefore, this study regards design fiction method in relation to prior design also should consider user-centered perspective, not just experimental approaches. In this regards, this study tries to apply user-centered process, specifically affordances which lead more intuitive and direct impact on users into conventional design fiction process. This study led junior students in visual communication major into design fiction process with specific topics and the Design with Intent Toolkit amongst practices of creating affordances so as to develop new design fiction process with its diverse outcomes. Throughout the process, this study aims to suggest alternative user-friendly design fiction method beyond its critical and experiential approaches.

암석물리학상이란 주변 지층과 구별할 수 있는 지층의 특성을 나타내는 물리검층 신호의 복합체로 정의할 수 있으며, 이를 결정함으로써 저류층의 물성 예측에 활용할 수 있다. 이 연구에서는 지능형 기법을 이용하여 지층의 암석물리학상을 결정할 수 있는 사용자 친화적 소프트웨어인 KMU Efacies 2009를 개발하였다. 물리검층 자료의 효율적인 차원 축소를 위해 주성분 분석 기법을 지원하며 Fuzzy C-mean 및 K-mean 기법을 이용하여 군집 분석을 수행한다. 또한 군집 분석 결과를 바탕으로 암석물리학상을 결정할 수 있도록 구현하였다. 기술통계분석, 주성분 분석, 군집 분석에서 얻어진 모든 분석 결과를 시각적으로 출력하며 Excel 및 ASCII 파일 형식으로 저장이 가능하다. 소프트웨어의 사용법을 도움말 형태로 삽입하여 사용자가 쉽게 활용할 수 있도록 하였다.

Electrofacies is defined as the set of log reponses that characterizes a sediments and permit the sediment to be distinguished from others and is able to be utilized to estimate petrophysical properties of reservoirs. In this study, we develop a user-friendly software, KMU Efacies 2009. The software offers principle components analysis to reduce effectively dimensions of well-logging data and Fuzzy C-mean and K-mean method for cluster analysis. The result on cluster analysis is used for determining electrofacies. All the results are visualized and can be saved in form of Excel or ASCII file. An instruction manual is contained as help-files.

UCC가 정보 전달 매체의 새로운 영역으로 부각되기 시작 했다. 많은 사람들이 UCC를 제작하기 시작 했으며, 기업홍보, 개인 홍보, 유통 까지 UCC의 영역은 다양하게 확대 되어 간다. UCC를 제작하기 위한 동영상 편집기는 전통적인 방법으로의 편집에 멈추어 있으며 새로운 기법이 도입도지 못한 게 현실이다. 본 논문은 새로운 UCC 제작기 설계와 시스템 구현에 대해서 제안한다. 본 시스템은 기존의 편집 프로그램과 차별되며 쉽고 빠르게 UCC 콘텐츠를 제작 할 수 있다고 판단했다.

UCC is highlighted in so many field for information system area and new business part. So many people made UCC and it does effect on advertise area and marketing area. But it is stoped developed new motion picture editing system for UCC, so it is need to make new paradigm for easy develop UCC system. This paper introduce to build authorizing tool for UCC. Our system is different other motion picture edition system and very easy to build UCC.

현재 인터넷으로 감시 카메라를 이용하여 교통량을 보여주는 서비스가 제공되고 있으나, 일반적으로 사용자 가 지도 위의 일정 위치를 지정하면 카메라가 장착되어 있는 기준으로 영상을 보여준다. 본 논문에서는 상단이 북쪽 으로 표시되는 일반적인 지도에 현재 카메라에서 촬영되고 있는 도로의 영상을 지도 기준으로 위에서 바라보는 시점 (Bird’s-eye view)으로 변형(Warping)하여 보여줌으로써 사용자가 직관적으로 현재의 도로 상황을 한눈에 볼 수 있는 시스템을 제안하였다. 본 논문에서는 카메라 영상에서 보여주고 있는 도로 평면을 강인하게 추정하기 위해 밝기 변 화에 강인할 수 있는 움직임 벡터를 이용하여 도로 평면을 추정하는 방법을 제안하며, 지도와 같은 방향성을 가질 수 있도록 재조정하는 과정을 적용하고 지도 위에 표시할 수 있는 사용자 친화적인 인터페이스를 제시하였다. 실험 결과를 통해 본 논문에서 제안하는 방법이 지도와 같이 사용자가 인지하기 편리한 영상으로 변형되는 결과를 확인하였다.

Currently, a traffic monitoring service using a surveillance camera is provided through internet. In general, if the user points a certain location on a map, then this service shows the real-time image of the camera where it is mounted. In this paper, we proposed the intuitive surveillance monitoring system which displays a real-time camera image on the map by warping with bird’s-eye view and with the top of image as the north. In order to robustly estimate the road plane using camera image, we used the motion vectors which can be detected to changes in brightness. We applied a re-adjustment process to have the same directivity with a map and presented a user-friendly interface that can be displayed on the map. In the experiment, the proposed method was presented as the result of warping image that the user can easily perceive like a map.

본 논문에서는 사용자 친화적이면서 좁은 영역에서도 효과적으로 입력을 수행할 수 있는 새로운 방식의 키 보드를 제안한다. 기존의 키보드는 문자의 배열 형태나 사용 방식은 다르지만 대부분 키를 나열한 다음 선택하도록 하는 방식이었다. 본 논문에서는 기존의 방식과 다르게 키보드 내용이 동적으로 변화하는 새로운 방식의 정보 입력 장치인 Dynamic Keyboard(DynaKey)를 설계한다. Dynakey는 정확한 위치 선택이 어려운 장애인이나 화면이 작은 이 동기기에서 사용하기 편리한 정보입력장치이다.

A new style keyboard which is user friendly and can be used efficiently in a small area is proposed in this paper. The most pre-existing keyboards were using the style of selecting a key among the arranged keys even the formats of key arrangement and the ways of using them were different. A new style of information input device called Dynamic Keyboard(DynaKey) is designed in this paper. Dynakey is a useful information input device which can be used efficiently for a mobile device with small display and for handicapped persons who has difficulties of selecting precise positions.

이 논문은 우리가 개발한 새로운 모션 인터페이스인 칵테일 시스템에 대한 것이다. 칵테일 시스템의 가장 큰 목적은 모바일 단말기 사용자에게 직관적이면서 사용이 편리한 파일전송 방식을 제공하는 것이다. 칵테일 시스템은 바텐더가 사용하는 모션들을 활용하여 직관적이면서 쉬운 파일전송 인터페이스를 제공한다. 즉, 바텐더가 사용하는 붓기, 흔들기 등의 동작이 우리 시스템에서는 파일 전송 및 새로운 멀티미디어 콘텐츠 생성에 사용된다. 우리는 삼성 UMPC를 활용하여 칵테일 시스템의 프로토타입을 구현하였으며 사용방식을 시연하였다.

This paper presents Cocktail, a new gesture-based inter-face for mobile devices. The main objective ofCocktail is to provide a user-friendly way of exchanging multimedia data between mobile users. Our approachis motivated by bartenders who make cocktails. The gestures used by bar-tenders, such as pouring orshaking, are similarly used in our system to transmit data or create a new multimedia content by mixingexisting data. Liquid bottles are mapped to mobile devices. Drinks in the bottles are mapped to multimediacontents in mobile devices. In this manner, Cocktail provides users with a bartender-like interface formanipulating their mobile devices. We have implemented a prototype of Cocktail using Samsung Ultra MobilePersonal Computers (UMPCs) and demonstrate its usability.

This research proposes a React-ROS2 interactive navigation system for indoor delivery robots. Traditional ROS2 interfaces require complex commands and specialized knowledge, creating barriers for non-expert users. Our system addresses this issue by providing intuitive button-based destination selection using React, enabling autonomous navigation through simple clicks instead of complex parameter settings. The system implements efficient communication between React frontend and ROS2 backend using Rosbridge websocket protocol, allowing real-time data exchange. We validated the system in a Gazebo virtual environment, demonstrating successful integration of user-friendly interface with ROS2 navigation stack. This methodology enhances operational efficiency of indoor delivery robots and improves accessibility for users without specialized knowledge, contributing to broader adoption of robotic technology.

챗봇이 비즈니스의 중요한 인터페이스 창구로 떠오르고 있다. 이러한 변화는 챗봇 관련 연구가 자연어처리 (Natural Language Processing)기법에서 자연어이해(Natural Language Understanding) 그리고 자연어생성 (Natural Language Generation)으로 지속적으로 발전했기 때문이다. 하지만, 챗봇을 개발하는 과정에서 도메인 지식 을 이끌어내고, 사용자 친화적인 대화형 인터페이스로 개발하는 방법론적 연구는 미약한 것이 현실이다. 본 논문에서는 챗봇 개발의 프로세스적 기준을 제시하기 위해 이전 논문에서 제시한 방법론을 바탕으로 실제 프로젝트에 적용하며 개발방법론을 개선하였다. 결론적으로 가장 핵심적인 단계인 테스트 단계의 생산성을 33.3% 향상하였으며, 그 반복횟 수도 37.5%로 단축하였다. 이러한 결과를 바탕으로 “3 Phase and 17 Tasks 개발방법론”을 제시하였으며, 이것은 챗 봇 개발의 시행착오를 획기적으로 개선할 것으로 기대한다.

Chatbot is emerging as an important interface window for business. This change is due to the continued development of chatbot-related research from NLP to NLU and NLG. However, the reality is that the methodological study of drawing domain knowledge and developing it into a user-friendly interactive interface is weak in the process of developing chatbot. In this paper, in order to present the process criteria of chatbot development, we applied it to the actual project based on the methodology presented in the previous paper and improved the development methodology. In conclusion, the productivity of the test phase, which is the most important step, was improved by 33.3%, and the number of iterations was reduced to 37.5%. Based on these results, the "3 Phase and 17 Tasks Development Methodology" was presented, which is expected to dramatically improve the trial and error of the chatbot development.

In this paper, we propose a user-friendly tool that calibrates the coefficient variables of Steinhart-Hart equation used for the temperature measurement of NTC thermistor. The proposed tool provides automatic modification of the coefficient variables only with temperature measurement, whereas the legacy process requires manual modification of the coefficient variables with temperature and resistance measurements. For user convenience, the proposed tool is implemented with a user-friendly GUI program. The tool is applied to 4-points temperature measurements of PCR devices. In accuracy evaluation, the proposed tool yields a precision of ±0.1℃.

Nowadays security matter is a great challenge in web-based systems and we are using various types of HIP to defend malwares in web. But today’s conventional HIP models are able to defend bots but make a user ireful. This paper will focus on a new and simple model of CAPTCHA to defend bot-attack. This model makes a user easily to pass and also amuse them with its simplicity. Considering computational complexity, we are using a thin algorithm with some other technical tricks to make it both robust & simple.

일반적인 가정용 선풍기는 단 하나의 좌우 회전 구간을 갖기 때문에 회전 각도를 조절할 수 없어 불필요한 영 역까지 바람이 가거나 바람이 필요한 공간에 바람이 가지 않는 구간이 발생한다. 본 논문에서는 에너지 낭비를 줄이 면서 필요한 공간에 선택적으로 바람을 보낼 수 있도록 회전 구간을 효율적으로 조절하는 방법을 제시하고자 한다. 정지 풍향각 측정 실험을 통해 최소 회전 각도를 구하였으며 최적의 회전 단계수를 선정하기 위해 바람이 도달하는 공간을 적절히 분할하였다. 이를 통해 선풍기가 45°의 최소 회전 각도와 3단계의 회전 구간을 가지면서 각 단계마다 정지 풍향각의 2배씩 회전 각도가 증가할 때 바람이 효율적으로 분배되는 것을 확인하였다. 따라서 본 논문에서 제시 한 선택적 회전 구간 조절 방법은 선풍기 구조에 큰 변형 없이 에너지 낭비를 최소화 할 수 있을 것으로 사료된다.

Since a general household fan has only one left/right turning stage, the rotation angle cannot be adjusted leading to cases whether the wind reaches to an unnecessary area or vice versa. In this paper, we propose a method to efficiently control the turning section to selectively send wind to a necessary space while reducing energy waste. The minimum rotation angle was obtained by experimentally measured the stationary wind direction angle of the fan, and the optimal number of turning stages was selected by appropriately dividing the space where the wind reaches. Through this, it was confirmed that if the fan has a minimum rotation angle of 45°, a turning section of 3 stages and its rotation angle is increased by twice the stationary wind direction angle at each stage, the wind is distributed efficiently. Therefore, it is considered that the selective turning stage control proposed in this paper can minimize energy waste without significant change of the fan structure.

Recently, with the increasing use of power semiconductors and microprocessors which are very sensitive to little change of power quality and for coping positively with anticipating power quality disputes between power providers and consumers which are possible to occur by of power market being formed, the power quality problem has gained preponderance among the contemporary research areas. To serve these purposes, the integrated system has been researched and developed for power quality analysis and monitoring, which provides speedy and powerful functions by the growth of computer hardware and information technology. But the advent of fast and lower price hardware make little difference in an application on many systems. As a result, the key issues of constructing power quality monitoring system are in the management of data obtained, accurate algorithms, graphic representation and user-friendly-environment for easy and clear analysis results. So, in this paper it will be introduced that the standard of user-friendly-GUI(Graphic User Interface) and analysis graphic representation for intuitive understanding of results from power quality analysis based on consideration of several systems currently being in use.

In this paper, a user-friendly mobile photo album system and albuming functions to support it are introduced. Stand-alone implementation in a mobile device is considered. The main idea of user-friendly photo browsing for albuming functions is to enable users to organize and browse their photos along semantically meaningful axes of events, personal identities, and categories. Experimental results demonstrate that the proposed method would be sufficiently useful and efficient for browsing personal photos in mobile environment.

In this paper, we propose a remote speech input device, a new method of user-friendly speech input in spontaneous speech recognition system. We focus the user friendliness on hands-free and microphone independence in speech recognition applications. Our method adopts two algorithms, the automatic speech detection and the microphone array delay-and-sum beamforming (DSBF)-based speech enhancement. The automatic speech detection algorithm is composed of two stages; the detection of speech and nonspeech using the pitch information for the detected speech portion candidate. The DSBF algorithm adopts the time domain cross-correlation method as its time delay estimation. In the performance evaluation, the speech detection algorithm shows within-200 ms start point accuracy of 93%, 99% under 15dB, 20dB, and 25dB signal-to-noise ratio (SNR) environments, respectively and those for the end point are 72%, 89%, and 93% for the corresponding environments, respectively. The classification of speech and nonspeech for the start point detected region of input signal is performed by the pitch information-base method. The percentages of correct classification for speech and nonspeech input are 99% and 90%, respectively. The eight microphone array-based speech enhancement using the DSBF algorithm shows the maximum SNR gaing of 6dB over a single microphone and the error reductin of more than 15% in the spontaneous speech recognition domain.