• 아동학회지
• /
• 제36권2호
• /
• pp.131-143
• /
• 2015

This study sought to investigate the influence of mother's marital conflict and avoidance coping strategies with marital conflict on school aged child-rearing stress, on the focus of interaction mother's marital conflict and avoidance coping strategies with marital conflict. The subjects comprised 234 mothers of school aged children in Daegu and Keoungbok. The collected data were analyzed by mean of t-test, Pearson Correlation, and Hierarchical regression using SPSS Win 19.0. The results were as follows. (1) Mother's marital conflict significantly influenced on school aged child-rearing stress. However mother's avoidance coping strategies with marital conflict on school aged child-rearing stress did not. (2) The interaction effects of mother's marital conflict and avoidance coping strategies with marital conflict on school aged child-rearing stress was observed.

• 제어로봇시스템학회:학술대회논문집
• /
• 제어로봇시스템학회 2003년도 ICCAS
• /
• pp.408-412
• /
• 2003

Obstacle avoidance algorithm is very important on an unmanned vehicle. Therefore, in this research, we propose a algorithm of obstacle avoidance and we can prove through vehicle test and sensor experiments. Obstacle avoidance must be divided into two parts: the first part includes the longitudinal control for acceleration and deceleration and the second part is the lateral control for steering control. Each system is used for unmanned vehicle control, which notes its location, recognizes obstacles surrounding it, and makes a decision how fast to proceed according to circumstances. During the operation, the control strategy of the vehicle can detect obstacles and perform obstacle avoidance on the road, which involves vehicle velocity. In this paper, we propose a method for vehicle control, modeling, and obstacle avoidance, which are confirmed through vehicle tests.

• 제어로봇시스템학회:학술대회논문집
• /
• 제어로봇시스템학회 2005년도 ICCAS
• /
• pp.740-745
• /
• 2005

This study is intended to build a controller of redundant manipulators with the simultaneous abilities of trajectory tracking and obstacle avoidance without any preparations of path planning to achieve full automation even for one production of one kind, while keeping the avoidance ability high and keeping its shape away from object to reduce the possibility that the manipulator crashes to the object. To evaluate the avoidance ability of the intermediate link, we proposed a scalar value of Avoidance Manipulability Shape Index(AMSI), which is independent of the obstacle's shape. On the other hand, the danger to crash to the obstacle is depending on the shape of the obstacle, which could be evaluated by the potential field set around the obstacle. This paper proposes control method of the manipulator's shape based on the AMSI to simultaneously avoid obstacles and keep the avoidance ability high with potential.

• 제어로봇시스템학회:학술대회논문집
• /
• 제어로봇시스템학회 2003년도 ICCAS
• /
• pp.932-937
• /
• 2003

In this paper, we will explain about the unmanned vehicle control and modeling for combined obstacle avoidance and lane tracking. First, obstacle avoidance is considered as one of the important technologies in the unmanned vehicle. It is consisted by two parts: the first part includes the longitudinal control system for the acceleration and deceleration and the second part is the lateral control system for the steering control. Each system uses to the obstacle avoidance during the vehicle moving. Therefore, we propose the method of vehicle control, modeling and obstacle avoidance. Second, we describe a method of lane tracking by means of vision system. It is important in the unmanned vehicle and mobile robot system. In this paper, we deal with lane tracking and image processing method and it is including lane detection method, image processing algorithm and filtering method.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2004년도 학술대회 논문집 정보 및 제어부문
• /
• pp.490-492
• /
• 2004

This paper presents an obstacle avoidance of a mobile robot by the subgoal generation using infrared sensors. When an obstacle appears on the path which the robot is moving forward the robot has to get information, such as distance between the robot and the obstacle and the shape of the obstacle for avoidance behavior. Our collision avoidance algorithm needs the only distance between the robot and the obstacles. The distances are used for subgoal generation. Simulation results show that a robot can go to the goal, carrying out subgoal generation and avoiding obstacles.

• International Journal of Aeronautical and Space Sciences
• /
• 제14권3호
• /
• pp.272-281
• /
• 2013

Traffic Collision Avoidance System (TCAS) is designed to enhance safety in aircraft operations, by reducing the incidences of mid-air collision between aircraft. The current version of TCAS provides only vertical resolution advisory to the pilots, if an aircraft's collision with another is predicted to be imminent, while efforts to include horizontal resolution advisory have been made, as well. This paper introduces a collision resolution algorithm, which includes both vertical and horizontal avoidance maneuvers of aircraft. Also, the paper compares between the performance of the proposed algorithm and that of algorithms with only vertical or horizontal avoidance maneuver of aircraft.

• 한국교육학연구
• /
• 제22권3호
• /
• pp.301-327
• /
• 2016

본 연구에서는 한국과 중국의 고등학생들을 대상으로 이들이 지각한 교실 목적구조(숙달, 수행접근, 수행회피), 도움 요청 행동(도움 요청, 도움 요청 회피) 및 학교 참여에 어떠한 차이가 있는지를 살펴보고, 이들이 지각한 교실 목적구조와 학교 참여 간의 관계에서 도움 요청 행동(도움 요청, 도움 요청 회피)이 매개하는지에 대해 탐색해 보고자 하였다. 이를 위해 본 연구에서는 한국과 중국의 고등학생 총 584명을 최종 분석 대상으로 선정하였다. 본 연구 결과, 한국의 고등학생들에 비해 중국의 고등학생들이 지각한 교실 숙달 목적구조 및 교실 수행회피 목조구조 수준이 높은 것으로 나타났고, 도움 요청과 정서적 학교 참여 수준도 높은 것으로 나타났다. 반면에, 한국 고등학생들이 중국 고등학생들에 비해 행동적 학교 참여 수준이 높은 것으로 나타났다. 또한, 한국 고등학생들이 지닌 도움 요청 및 도움 요청 회피는 교실 숙달 목적구조와 학교 참여 간의 관계를 유의하게 매개하며, 도움 요청 회피는 교실 수해회피 목적구조와 학교 참여 간의 관계를 유의하게 매개하는 것으로 나타났다. 중국 고등학생들이 지닌 도움 요청 및 도움 요청 회피는 교실 수행회피 목적구조와 학교 참여 간의 관계를 유의하게 매개하며, 도움 요청 회피만 교실 숙달 목적구조와 학교 참여 간의 관계를 유의하게 매개하는 것으로 나타났다. 이와 같은 본 연구 결과는 한국과 중국의 고등학생들의 학교 참여 수준 증진을 위한 방안을 개발하는 데 기초자료로 활용될 수 있을 것으로 기대된다.

• International Journal of Automotive Technology
• /
• 제4권4호
• /
• pp.173-180
• /
• 2003

Obstacle avoidance is considered as one of the key technologies in an unmanned vehicle system. In this paper, we propose a method of obstacle avoidance, which can be expressed as vehicle control, modeling, and sensor experiments. Obstacle avoidance consists of two parts: one longitudinal control system for acceleration; and deceleration and a lateral control system for steering control. Each system is used for unmanned vehicle control, which notes its location, recognizes obstacles surrounding it, and makes a decision how fast to proceed according to circumstances. During the operation, the control strategy of the vehicle can detect obstacles and perform obstacle avoidance on the road, which involves vehicle velocity. The method proposed for vehicle control, modeling, and obstacle avoidance has been confirmed through vehicle tests.

• Journal of Electrical Engineering and Technology
• /
• 제8권4호
• /
• pp.879-888
• /
• 2013

This paper addresses the vision based local path planning system for obstacle avoidance. To handle the obstacles which exist beyond the field of view (FOV), we propose a Panoramic Environment Map (PEM) using the MDGHM-SIFT algorithm. Moreover, we propose a Complexity Measure (CM) and Fuzzy logic-based Avoidance Motion Selection (FAMS) system to enable a humanoid robot to automatically decide its own direction and walking motion when avoiding an obstacle. The CM provides automation in deciding the direction of avoidance, whereas the FAMS system chooses the avoidance path and walking motion, based on environment conditions such as the size of the obstacle and the available space around it. The proposed system was applied to a humanoid robot that we designed. The results of the experiment show that the proposed method can be effectively applied to decide the avoidance direction and the walking motion of a humanoid robot.

• 한국산업융합학회 논문집
• /
• 제21권6호
• /
• pp.379-388
• /
• 2018

In this study, we propose a new approach to impliment autonomous travelling of mobile robot based on obstacle avoidance and voice command. Obstacle Avoidance technology of mobile robpot. It has been used in wide range of different robotics areas to minimize the risk of collisions. Obstacle avoidance of mobile robots are mostly applied in transportation systems such as aircraft traffic control, autonomous cars etc. Collision avoidance is a important requirement in mobile robot systems where they all featured some kind of obstacle detection techniques in order to avoid colliding. In this paper it was illustrated the reliability of voice command and obstacle avoidance for autonomous travelling of mobile robot with two wheels as the purpose of application to the manufacturing process by simulation and experiments.