[지역기획보도 부문] 재보선에 깨진 세금 : 제187회 〈“62억 원 혈세가 줄줄” 역대 경남 재보궐선거 실태 연속보도〉 2024년 4월 2일~8일 보도 MBC경남 이재경, 이선영, 손무성 기자

이재경 (사)방송기자연합회 2024 방송기자 Vol.79 No.-

연삭가공 트러블슈팅을 위한 룰베이스 구성의 기초

이재경,김건회,송지복 韓國工作機械學會 2000 한국생산제조학회지 Vol.9 No.4

Cognition and control of grinding trouble occurring during the grinding process are classified into a quantitative knowl-edge which depends on experimental data and qualitative knowledge which relies on skilful engineers. Grinding opera-tions include a large number of functoinal parameters, since there are several ways of coping with grinding trouble. One is the qualitative method which depends on empirical knowledge utilizing the skilful experts from the workshop, the other is the quantitative method which utilizes the experimental data obtained by a sensor. But, they are all difficult to accomplish from the grinding trouble-shooting system. The reason is that grinding troubles are not easily controlled in the quantitative method, and therefore, trouble-shooting has mainly relied. on the knowledge of skilful engineers. Thus, there is an impor-tant issue of how a grinding trouble-shooting system can be designed and what knowledge is utilized among the large amount of grinding trouble information. In this paper, basic strategy to develop the grinding database of rule-based model, which is strongly depended upon experience and intuition, is described.

지능형로봇 장애물회피에 관한 연구

이재경 한국교통대학교 2017 한국교통대학교 논문집 Vol.52 No.-

In order that an intelligent robot can navigate to the desired position in an environment which is cluttered with obstacles, it is essentially required for an intelligent robot to have an obstacle avoidance capability. In this paper, a study on obstacle avoidance of an intelligent robot is performed. A novel method that an intelligent robot can avoid collision with obstacles is proposed. Obstacles in front of the intelligent robot can be found by using the ultrasonic sensors which are attached on the intelligent robot. A series of simulations are performed to show the effectiveness of the proposed method. The simulation results show that the proposed method is very effective for an intelligent robot navigating to the desired position without colliding with obstacles. Therefore an intelligent robot can navigate to the desired position safely in an environment with obstacles by using the proposed method.

전동 휠체어의 자동운전에 관한 연구

이재경 韓國交通大學校 2013 한국교통대학교 논문집 Vol.48 No.-

Electric powered wheelchair is used for a handicapped person as a supplementary device of movement. However, it is not easy for a handicapped person to drive an electric powered wheelchair, especially in an environment cluttered with obstacles. In this paper, study on automatic driving method of an electric powered wheelchair is performed. A novel method which can measure the distance to the guiding land mark from the wheelchair, by using the image of the guiding land mark acquired by the CCD (Charge Coupled Device) camera which is attached on the wheelchair. Experiments are performed to evaluate the proposed method and the experimental results show that the proposed method can be applicable to the automatic driving of an electric powered wheelchair.

지능형 전동 휠체어의 주행제어

이재경 忠州大學校 2011 한국교통대학교 논문집 Vol.46 No.-

Recently, as the performance of an electric powered wheelchair is improved, it is widely used for handicapped person as a supplementary device of movement. However, because it is controlled via joystick, it is not easy for handicapped person to control the electric powered wheelchair safely. In this paper, new method for navigation control of an intelligent electric powered wheelchair is proposed. The kinematic structure of an electric powered wheelchair is similar to that of a wheel driven mobile robot. Generally, wheel driven mobile robot has non-holonomic constraint, that is, a mobile robot can not move to the direction which is perpendicular to the instantaneous moving direction. Therefore an intelligent electric powered wheelchair has non-holonomic constraint. In order that an intelligent electric powered wheelchair can navigate in an environment cluttered with unknown obstacles, accurate navigation control is essentially required. Simulation is performed to verify the effectiveness of the proposed method. The simulation result shows that the proposed method can be applicable to the navigation control of an intelligent electric powered wheelchair.

모자 상호작용 주제 중심의 반성적 어머니 토론 모임에서 나타난 양육태도 변화과정 탐색

이재경 육아정책연구소 2014 육아정책연구 Vol.8 No.2

본 연구에서 반성적 사고를 기반으로한 어머니 토론 모임은 양육스트레스가 높은 어머니들이 어떻게 양육태도의 문제를 인식, 적용, 해결해 가는지에 대한 변화 과정을 탐색하기 위하여 경기도 E시에 위치한 어린이집의 세 학부모들과 11주간 연구자의 진행으로 이루어졌다. 연구 결과 반성적 어머니 토론 모임과정에서 다른 사람들의 의견과 정보를 비교 분석하면서 본인의 양육태도 문제를 객관적으로 인식하게 되었을 때 양육스트레스가 감소되고, 같은 주제의 지속적이고 반성적인 토론에서 본인에게 필요한 양육태도를 재정립할 수 있었다. 그리고 끊임없이 불거져 나오는 양육문제를 해결할 수 있는 중요한 열쇠가 반성적 사고임을 시사하였다. 반성적 어머니 토론 모임에서 어머니의 반성적 사고를 증진시키는 것이 어머니의 양육스트레스와 양육문제를 스스로 해결해나갈 수 있는 역량 있는 어머니로 성장하게 지원할 수 있는 교육적 의의를 찾을 수 있었다. This study examined how mothers with high parenting stress change their parenting attitudes by participating in a reflective discussion group. The study took place in a child care center located in city E, Gyeonggi-do where three mothers were observed by a researcher for 11 weeks. The following sources were used to collect data: video recording of the mother-child interaction, 11 times of direct observation, the mothers' journal and the researcher's journal. The results of this study highlights that in a reflective parent discussion group, the mothers' high parenting stress decreased as they objectively recognized their parenting attitude problems through a comparative analysis of each other’s different opinion. The mothers were also able to redefine the parenting attitudes they need. Moreover, this study suggests that reflective thinking plays a key role in solving parenting problems. Overall significance of the study is that the mothers were able to independently solve their parenting attitude problems and related stress by improving their reflective thinking skills through participating in a parent discussion group, and thus become better mothers.

Optimal Configuration of a Mobile Manipulator for Continuous Path Task

이재경 忠州大學校 2002 한국교통대학교 논문집 Vol.37 No.3

A mobile manipulator, which consists of a mobile robot and a manipulator, has combined mobility and manipulation functions. Therefore it can perform various tasks efficiently by using these two functions. However, the coupling of these two functions creates a particular kinematic redundancy introduced by mobility, which is quite different from that introduced by extra joints. In this paper, we propose a novel method for a mobile manipulator to execute continuous path task. In case of continuous path task, the mobile manipulator should satisfy the constraint that the configuration of the end-effector must track the desired trajectory. In order to verify the effectiveness of the proposed method, simulation is performed. The simulation results show that the proposed method is very powerful for obtaining the optimal configuration of a mobile manipulator to execute continuous path task.

원예시설용 복합환경제어기 설계

李在璟 충주대 2001 한국교통대학교 논문집 Vol.36 No.2

In order to cultivate high quality agricultural products, horticultural facilities are widely used. Because the interior of the horticultural facilities are isolated from the exterior environmental conditions, the productivity can be increased remarkably by controlling the environmental conditions such as temperature, humidity or CO2 concentration. In this paper, the design of environment controller for horticultural facidity is addressed.

극한작업용 로봇 안내장치의 기구학적 특성에 관한 연구

이재경 충주대 산업과학기술연구소 1999 産業科學論文集 Vol.7 No.1

Recently, studies on an automation system for hazardous tasks which are performed in an environment with irradiation and contamination are performed intensively. Because the environment where hazardous tasks are performed is inherently very hostile to human beings, it is very difficult and dangerous for human beings to perform such tasks. In order to develop an automation system for hazardous tasks, it is very important to fond out the kinematic characteristics of the robotic guidung device. In this paper, studies on the kinematic characteristics of the robotic guiding device for hazardous tasks are performed. The kinematic model for a robotic guiding device is established and sensitivity analysis is performed to find out the kinematic characteristics of the robotic guiding device through a series of computer simulations.

상담학의 연구 동향 분석

이재경 창원대학교 학생생활연구소 2001 학생생활연구 Vol.14 No.-