• 대기
• /
• 제24권2호
• /
• pp.189-196
• /
• 2014

The definition of onset date of Changma is revisited in this study using a quality controlled Ieodo ocean research station data. The Ieodo station has great importance in terms of its southwest location from Korean Peninsula and, hence, makes it possible to predict Changma period in advance with less impact of continents. The onset date of Changma using the Ieodo station data is defined by the time that meridional wind direction changes and maintains from northerly to southerly, and then the zonal wind changes from easterly to westerly after first June. This definition comes from a recognition that the establishment and movement of the western North Pacific subtropical high (WNPSH) cause Changma through southwesterly flow. The onset data of Changma has been determined by large-scale dynamic-thermodynamic characteristics or various meteorological station data. However, even the definition based on circulation data at the Ieodo station has a potential for the improved prediction skill of the onset date of Changma. The differences between before and after Changma, defined as Ieodo station data, are also found in synoptic chart. The convective instability and conspicuous circulations, corresponding low-level southwesterly flow related to WNPSH and strong upper-level zonal wind, are represented during Changma.

• 제어로봇시스템학회논문지
• /
• 제14권3호
• /
• pp.236-241
• /
• 2008

This paper presents a method to recognize the plane regions for movement of walking robots. When the autonomous agencies using stereo camera or laser scanning sensor is under unknown 3D environment, the mobile agency has to detect the plane regions to decide the moving direction and perform the given tasks. In this paper, we propose a very fast method for plane detection using normal vector of a triangle by 3 vertices defined on a small circular region. To reduce the effect of noises and outliers, the triangle rotates with respect to the center position of the circular region and generates a series of triangles with different normal vectors based on different three points on the boundary of the circular region. The vectors for several triangles are normalized and then median direction of the normal vectors is used to test the planarity of the circular region. The method is very fast and we prove the performance of algorithm for real range data obtained from a stereo camera system.

• 제어로봇시스템학회:학술대회논문집
• /
• 제어로봇시스템학회 1998년도 제13차 학술회의논문집
• /
• pp.95-99
• /
• 1998

We introduce an autonomous flying system using a model-helicopter. A feature of the helicopter is that autonomous flight is realized on the low-cost compact model-helicopter. Our helicopter system is divided into two parts. One is on the helicopter, and the other is on the land. The helicopter is loaded with a vision sensor and an electronic compass including a tilt sensor. The control system on the land monitors the helicopter movement and controls. We firstly introduce the configuration of our helicopter system with a vision sensor and an electronic compass. To determine the 3-D position and posture of helicopter, a technique of image recognition using a monocular image is described based on the idea of the sensor fusion of vision and electronic compass. Finally, we show an experiment result, which we obtained in the hovering. The result shows the effectiveness of our system in the compact model-helicopter.

• International Journal of Contents
• /
• 제16권1호
• /
• pp.75-86
• /
• 2020

As the elderly population is becoming an aging society, the elderly are experiencing many problems. Social security costs for the elderly are increasing and the un-linked social phenomenon is emerging. Thus, the social infrastructure and welfare system established in the past economic growth period are in danger of not functioning properly. People socially isolated or with chronic diseases among the elderly are exposed to various accidents. Thus, an active healthcare management service is imperative. Additionally, in the event of a dangerous situation, the system must have ways to notify guardians (family or medical personnel) regarding appropriate action. Thus, in this paper, we propose the smartphone-based healthcare and emergency response service platform. The proposed service platform aggregates movement of relevant data in real-time using a smartphone. Based on aggregated data, it will always recognize the user's movements and current state using the human motion recognition mechanism. Thus, the proposed service platform provides real-time status monitoring, activity reports, a health calendar, location-based hospital information, emergency situation detection, and cloud messaging server-based efficient notification to several subscribers such as family, guardians, and medical personnel. Through this service, users or guardians can augment the level of care for the elderly through the reports. Also, if an emergency situation is detected, the system immediately informs guardians so as to minimize the risk through immediate response.

• 한국산학기술학회논문지
• /
• 제11권7호
• /
• pp.2616-2622
• /
• 2010

본 논문은 지체장애인을 대상으로 한 네트워크 기반의 장기 게임(Janggi Game) 로봇을 구현하였다. 이를 위해 장기 게임에서 말의 이동은 무선 로봇과 음성인식 기법을 이용하여 설계 및 구현하였으며, 말의 제거와 장애물 처리 등은 물체 이동 알고리즘인 $A^{\ast}$ 알고리즘을 기반으로 하였다. 알고리즘의 구성 요소 및 구현 내용을 통해 지체장 애인의 원활한 장기 게임 진행을 실험하고 물체 이동 알고리즘의 효용성을 증명한다.

• 패션비즈니스
• /
• 제4권1호
• /
• pp.97-111
• /
• 2000

The term Japonism was coined in France where the predilection for Japanese art forms was immediately apparent, influencing Impressionism, Symbolism, Post-Impressionism, and later the Art Nouveau movement, all of which reflect aspects of Japanese art adapted to Western style. The 1968 May Revolution in Paris changed traditional thinking and shifted the center of fashion of the 1970's from haute couture to pret-a porter. At about the same time, having recovered from the destruction of war, Japan started to emerge as a leading economic force. The Japanese clothing designers, who were inspired by their own traditions, began to present their collections in the West. Hanae Mori's dresses with Japanese floral motifs were the first to appear. The West was captivated by the colorfully layered clothing of Kenzo Takada inspired by peasant and working class kimonos. And Issey Miyake was acclaimed for his innovative concepts of ‘one piece of cloth'. In the 1980s Rei Kawakubo and Yohji Yamamoto achieved recognition with their deconstructivist and minimalist approaches to fashion. The clothing proposed by these Japanese designers has transcended not only national and sexual boundaries, but also those of accepted materials in which to work. These designs suggest new possibilities and are unrestricted by preconceived ideas of kimono or of Western clothing. The emergence of Japanese designers as a powerful creative force in the late twentieth century has created a new dimension to the term Japonism in fashion. By integrating the clothing traditions of the West and Japan, while at the same time departing from them, a new international genre of clothing has been created.

• 한국컴퓨터정보학회논문지
• /
• 제26권10호
• /
• pp.53-59
• /
• 2021

본 논문에서는 어떠한 장치를 착용하지 않고 덤벨의 무게감을 인지하여 덤벨 운동을 할 수 있는 시스템을 제안한다. 가상현실 기술이 발전하면서 가상세계에서 현실 세계의 물리적 피드백을 시뮬레이션 하는 연구가 많이 진행하고 있다. 노인들에게 있어 재활 운동은 정확한 모션 인식이 중요하다. 또한, 노인들은 무거운 덤벨을 들 수가 없다. 본 논문에서는 재활 운동을 위해 실시간으로 입력되는 동작 데이터를 머신러닝을 활용하여 정확성을 판별하였다. 실험으로서 한손 덤벨 운동, 양손 덤벨 운동, 어깨 덤벨 운동 3가지를 실험하였으며, 재활 운동이 정확히 이루어지는가에 대해 실험하였다. 가장 안정적인 운동은 양손을 활용한 덤벨 운동이었으며 가장 적은 오차율을 나타내었다. 마지막으로, 가상에서 실제 적용하기 위해 가상 체육관 콘텐츠를 개발하였다.

• 로봇학회논문지
• /
• 제14권3호
• /
• pp.163-169
• /
• 2019

Robot ALICE@ERICA is a service robot developed to receive donations and to provide information services. ALICE@ERICA stands for Artificial Learning Intelligence robot for Culture and Entertainment at ERICA. In order to achieve the specific purpose of receiving donations, proper appearance design, appropriate movement and good communication skills are required in terms of HRI. In this paper, we introduce three strategies for developing robots to receive donations effectively. The first is to design a robot that makes people feel intimacy, the second is to approach only one of several people as a donor, and finally the donor communicates with video contents and voice recognition. A survey was conducted on the person who showed the reaction after the robot donated money in public places. Based on the survey results, it is proved that the method presented in this study effectively contributed to fund raising. If robots can perform actions that require high level of HRI, such as donation, robots can contribute more to human society. We hope that this study contributes to the improvement of human happiness.

• 농촌지도와개발
• /
• 제28권1호
• /
• pp.1-12
• /
• 2021

This study aims to analyze the effects of the Agricultural Ecological Environment Program, the first agri-environmental policy in Korea. To this end, as Janghyeon in Boryeong City and Hwaam in Cheongyang County were set up as experimental group. And similar to these villages nearby, Hwangryong in Boryeong and Gideok in Cheongyang have been set up as the control group. It compared and analyzed the farms' level and structure of awareness. The main results of the study can be summarized as follows. First, the Agricultural Ecological Environment Program improved the awareness of safe agricultural product cultivation and agricultural ecological environment stabilize. However, the contribution to the formation of rural community has not been statistically significant. Second, it was found that the farms clearly distinguish and recognize the safe agricultural products cultivation, the agricultural ecological environment stabilize, and the formation of rural community. On the other hand, it was found that the control group that did not participate in the agricultural ecological and environmental program was confused on the recognition of three things or did not recognize them. To summarized, the future agri-environmental policy can be grafted onto regional development policy. So, the areas of agri-environmental policy should include both agriculture and rural. In addition, the scientific discipline and movement approach should be all used also in the method of approach.

• 반도체디스플레이기술학회지
• /
• 제21권4호
• /
• pp.121-125
• /
• 2022

This paper deals with the development of a deep-learning-based robot that recognizes various types of stairs and performs a mission to go up to the target floor. The overall motion sequence of the robot is performed based on the ROS robot operating system, and it is possible to detect the shape of the stairs required to implement the motion sequence through rapid object recognition through YOLOv4 and Cuda acceleration calculations. Using the ROS operating system installed in Jetson Nano, a system was built to support communication between Arduino DUE and OpenCM 9.04 with heterogeneous hardware and to control the movement of the robot by aligning the received sensors and data. In addition, the web server for robot control was manufactured as ROS web server, and flow chart and basic ROS communication were designed to enable control through computer and smartphone through message passing.