TiO₂ 광촉매에서 생성되는 OH Radical을 이용한 악취물질 제거 기술

권성진,김재용,권진홍,김태영,문기학,조영태 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.1

하루 중 대부분을 실내에서 현대인에게 실내공기질은 건강적인 측면에서 아주 중요하다. 그 중에서도 악취물질과 휘발성 유기화합물 같은 경우구토나 어지러움, 알레르기 등의 증상이 나타나는 빌딩증후군 등을 일으킨다. 이로 인하여 악취물질과 VOC의 제거를 통한 쾌적한 환경에 대한 요구가 제기되고 있다. 현재 실내공기 정화 기술들은 효율이 낮고 악취 제거에는 성능이 미약할 뿐 아니라 제품의 가격이 고가인 단점이 있다. 본 연구에서는 악취원인 물질과 오염물질들이 적외선의 파장을 흡수하는 특성을 이용해 광촉매로부터 생성된 OH Radical과의 반응성을 향상 시켜 제거하고자 한다. VOC중 포름알데히드, 악취원인물질의 대표 물질인 암모니아, 황화수소 제거를 효율 평가 항목으로 실험하였고, 제거 효율의 평가는 실제 오염된 실내 환경을 대상으로 실험 측정 결과를 토대로 비교 분석하였다.

독후 활동이 시각장애 초등학생의 인성에 미치는 영향 -5가지 인성 덕목을 중심으로-

권성진,신현기 한국시각장애교육&재활학회 2018 시각장애연구 Vol.34 No.4

The purpose of this study is to investigate how post-reading activities influence visually impaired elementary school students’ personality. For the research, 20 session lessons based on fairy tales implying the five personality virtues of self-respect, considerationㆍcommunication, responsibility, politeness, and honestyㆍcourage were conducted for three 12-year-old visually impaired elementary school students. The study participants’ personality levels were measured with KEDI Personality Test, and after the intervention the result of pre-test was compared with the result of post-test. In addition, changes were examined by analyzing the outcome of consultation with the students, observation, and worksheets. The research results were as follows. First, the subject students showed improvement in their personality levels in all of the five personality virtues in the post-test. Second, the students expressed their state reflecting on themselves about the five personality virtues and made resolutions about future actions. They were also observed to reduce negative thoughts and behaviors and have more positive thoughts and behaviors, putting personality virtues into actions. This implies that post-reading activities have an impact on visually impaired elementary school students’ five personality virtues, although this is not a long-term study. 본 연구의 목적은 독후 활동이 시각장애 초등학생의 인성에 미치는 영향을 밝히는데 있다. 이를 위해 12세의 시각장애 초등학생 3명을 대상으로 자기존중, 배려ㆍ소통, 책임, 예의, 정직ㆍ용기 등 5가지 인성 덕목에 해당하는 동화를 선정하여 총 20회기의 독후 활동을 진행하였으며, KEDI(한국교육개발원)의 표준화 인성검사를 이용하여 중재 후 사전ㆍ사후검사의 결과를 비교하였다. 또한 학생과의 상담 및 관찰 내용, 학습 활동지 등 결과물을 정리하여 변화를 비교하여 보았다. 이에 대한 연구 결과를 요약하면 다음과 같다. 첫째, 대상 학생들은 사후검사 결과 5가지 인성 덕목 모두에서 사전검사보다 인성수준이 향상되었다. 둘째, 대상 학생들은 인성 덕목 5가지에 비추어 자신은 어떠한 상태인지 나름대로의 표현을 하며 앞으로의 행동에 대한 다짐을 하였다. 또한 이전의 부정적이었던 생각과 행동이 줄어듦과 동시에 긍정적인 생각과 행동을 실천하는 모습이 관찰되었다. 이는 장기적인 일반화 효과검증은 아니지만 독후 활동이 시각장애 초등학생의 자기존중, 배려ㆍ소통, 책임, 예의, 정직ㆍ용기 등 5가지 인성 덕목에 영향을 미쳤음을 시사한다.

Formation Reconfiguration Control of Multiple Teleoperated Nonholonomic Wheeled Mobile Robots under Distribution Constraint

권성진 한국국방경영분석학회 2022 한국국방경영분석학회지 Vol.48 No.2

In this paper, we propose a novel framework for teleoperation of multiple nonholonomic wheeled mobile robots (WMRs) in the changing driving environment. We present a new multiple robot control algorithm by combining the formation reconfiguration technology with the latest control method for teleoperation. We utilize an onboard system of WMRs with the capability of sensing and computing. Each WMR has the same computing power for visualizing the driving environment, handling the sensing information and calculating the control action. One of the WMRs is the leader with a first person view (FPV) camera and simultaneous localization and mapping (SLAM), while others with monocular cameras those has limited filed of view (FoV), as the followers, keep a certain desired formation during driving in a distributed manner. We set two control objectives, one is group driving and the other is holding the shape of the formation. We have to capture the control objectives separately and simultaneously, we use nonholonomic passive decomposition to split the WMRs’ kinematics into those of the formation maintaining and group driving. The repulsive potential function to prevent the collision among WMRs and attractive potential function to restrict the boundary of follower WMRs’ moving space while switching their formation are also used. Simulation with 39 tanks and experiments with three WMRs are also performed to verify the proposed framework.

데 스틸(de Stijl) 건축 디자인의 의의에 관한 연구

권성진 서라벌대학 1995 논문집 Vol.9 No.-

DESING PROGRAM FOR THE KINEMATIC AND DYNAMIC CHARACTERISTICS OF THE BUS DOOR MECHANISM

권성진,서명원 한국자동차공학회 2005 International journal of automotive technology Vol.6 No.4

The bus is regarded as one of the most frequently used public transportation systems, the research anddevelopment on driving stability, safety, and convenience for drivers and passengers has tremendously increased in recentdays. This paper investigated the design of the bus door mechanism composed of an actuator (or motor) and linkages. Thebus door mechanism is divided into many types according to the coupling of the linkages and the driving system. Themathematical models of all types of dor mechanism have been constructed for computer simulation. To design the busdor mechanism, we developed a simulation program, which automates the kinematic and dynamic analysis according tothe input parameters of each linkage and the driving system. Using this program, we investigated the design parametersthat affect the kinematic and dynamic characteristics of the bus door mechanism under various simulation conditions. Inaddition, simple examples are examined to validate the developed program.

초등학교 5, 6학년 학생들의 BMI와 체지방률에 따른 체력 및 식생활 습관 비교

권성진,송광섭,권선옥 한국초등체육학회 2011 한국초등체육학회지 Vol.17 No.1

The purpose of this study was to assess and compare physical fitness and dietary life attitude on the levels of BMI and %Fat in fifth-sixth elementary school students. 321 elementary school students were divided into "normal group", "overweight group" and "obesity group" based on BMI and %fat. For cardiopulmonary, strength and power strength of physical fitness by groups depending on the levels of BMI, the NG was the first, the OW the second and the OG the third, and there were statistically significant differences(p<.001). For flexibility, the NG was the first, the OW the second and the OG the third, and there was no a statistically significant difference. For cardiopulmonary and power strength of physical fitness by groups depending on the levels of %fat, the OW was the first, the NG the second and the OG the third, and there were statistically significant differences(p<.001). For flexibility, the NG was the first, the OW the second and the OG the third, and there was a statistically significant difference(p<.001). For strength, the NG was the first, the OG the second and the OW the third, and there was no a statistically significant difference. For regular life of dietary life attitude by groups depending on the levels of BMI, the NG was the first, the OW the second and the OG the third, and there was a statistically significant difference(p<.001). For balanced dietary life and dietary life & heath, the OW was the first, the NG the second and the OG the third, and there were statistically significant differences(p<.001). For regular life and dietary life & heath of dietary life attitude by groups depending on the levels of %fat, the NG was the first, the OW the second and the OG the third, and there were statistically significant differences(p<.001). For balanced dietary life, the NG was the first, the OW the second and the OG the third, and there was a statistically significant difference (p<.01). There were also an inverse relationships between; BMI and %fat, cardiopulmonary․power strength and body composition․dietary life attitude, body composition and dietary life attitude(p<.01). These above results lead that physical fitness and dietary life attitude influence in company with BMI and %fat. Therefore, systemized education and programs should be developed, and it must be adopted for elementary school students’ ideal physical fitness and dietary life attitude both in a school and students’ family.

Micro-porous battery separators prepared by a radiation-induced graft polymerization

권성진,최재학,손준용,임영언,노영창 한국공업화학회 2007 한국공업화학회 연구논문 초록집 Vol.2007 No.1

웹 기반 차량동역학 시뮬레이션을 위한 메타버스 서비스 플랫폼 구축에 관한 연구

권성진,Kwon, Seong-Jin 한국산업융합학회 2022 한국산업융합학회 논문집 Vol.25 No.5

Recently the car tuning has become a trailblazing and creative culture that expresses the personality of the owner. In this paper, the "Car-Vatar", which is the compound word formed from the words "Car" and "Avatar", has been developed to investigate car tuning on the metaverse engineering platform. The Car-Vatar has been developed as a web-based vehicle dynamic simulation service for providing information about car tuning. That has been focused on investigating diverse vehicular performances, such as acceleration, braking, handling and fuel efficiency, according to the tuning vehicles and tuning parts on the virtual engineering platform. The Car-Vatar platform has provided two major services; one is real-time 3D tuning information system for the dress-up and performance-up tuning parts, the other is diverse vehicle dynamics system for the performance-up tuning parts. To check the validation of the Car-Vatar platform, the comparison between virtual simulation results and driving test results has been discussed on various driving environments.

양측성 난청과 어지럼을 동반한 수막암종증 1예

권성진,남상열,민광선,이효정 대한이비인후과학회 2009 대한이비인후과학회지 두경부외과학 Vol.52 No.5

Leptomeningeal carcinomatosis is defined as the diffuse infiltration of the leptomeninges by malignant cells metastasized from systemic cancer. We report a case of leptomeningeal carcinomatosis presenting bilateral sensorineural hearing loss and dizziness. A 51-year-old woman who was diagnosed with non-small cell lung cancer with leptomeningeal carcinomatosis was referred to our department because of progressive hearing loss and dizziness. Magnetic resonance imaging revealed an abnormal enhancement of the vestibulocochlear nerves within the internal auditory canals bilaterally. The patient received chemotherapy concurrently with an intrathecal methotrexate injection. Leptomeningeal carcinomatosis must be considered in the differential diagnosis of cancer patients with bilateral progressive sensorineural hearing loss.

새만금 동서2축 도로건설공사 현장을 다녀와서

권성진 한국지반공학회 2018 지반 : 한국지반공학회지 Vol.34 No.1