http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
황호연(Hoyeon Hwang),전정민(Jeongmin Jeon),정홍렬(Hong-ryul Jung),김수종(Sujoing Kim),문형필(Hyungpil Moon) 대한기계학회 2019 대한기계학회 춘추학술대회 Vol.2019 No.11
Task planning and motion planning are needed to handle the task the robot wants. The task planning is represented by a graph structure map of vertices and edges. At the vertex, the robot manipulator information, position, and object’s position were shown, and the edge represented the behavior of the robot, which was represented by a graph structure. With information about objects in the graph structure, geometric constraints can be considered in task planning. The heuristic can be used in the graph search algorithm to find the optimal path for task planning. Motion planning and v-rep simulator allow you to see the results of task planning.
광주지역 송암산단 환경 대기 중 VOCs 농도 분포와 배출원 추정
황호연 ( Hoyeon Hwang ),박옥현 ( Ok-hyun Park ),장정원 ( Jeong-won Jang ),양윤철 ( Yoon-cheol Yang ),김민진 ( Min-jin Kim ),강창후 ( Changhu Kang ),정희윤 ( Hee-yun Jung ),서광엽 ( Gwang-yeob Seo ),김연희 ( Yunhee Kim ) 한국환경기술학회 2024 한국환경기술학회지 Vol.25 No.2
This study investigated the concentration of Volatile Organic Compounds (VOCs) and identify the impact of associated meteorological factors in Songam Industrial Complex in Gwangju. Accordingly, we performed a factor analysis to estimate the source of VOCs emissions. Findings included a high level of toluene, acetone, butyl acetate, etc. within the Songam industrial complex, the atmospheric conditions near the proximity of the industrial complex and residential areas manifested a resembling trend. The atmosphere of the nearby environment is thought to be affected by VOCs emitted from the industrial complex. The weather factor analysis demonstrated that the distribution of the VOCs concentration affects the velocity of winds. Upon completion of the factor analysis in the industrial complex, the VOCs emissions in the industrial complex were induced by four factors, of which primary factors indicate painting facilities and exhaust gas of diesel vehicles. The factors of VOCs emissions in residential areas showed five, including the painting facilities and exhaust gas from diesel vehicles as primary factors, which is congruent with the factors in the industrial complex.
이영종(Youngjong Lee),황호연(Hoyeon Hwang),박경오(Kyungho Park),홍유표(Youpyo Hong) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.10
디지털 영상에 대한 위/변조 방지 및 저작권 보호를 위한 다양한 워터마킹 기법이 연구되어 왔다. 워터마킹 기법은 그 응용 대상에 따라 알고리즘이나 구현 방식이 크게 달라지게 되는데, 본 연구에서는 디지털 콘텐츠 대부분이 압축되어 전송, 저장되는 추세와, 최근 대부분의 멀티미디어 동영상 코덱 표준으로 채택이 되고 있는 H.264/AVC 인코더를 기반으로 한 워터마크 삽입을 실시간으로 수행하기 위한 기법을 제시한다.
서희정(Heejeong Seo),민경우(Kyoungwoo Min),박지영(Jiyoung Park),박주현(Juhyun Park),황호연(Hoyeon Hwang),박세일(Seil Park),김선정(Seonjeong Kim),정숙경(Sukkyung Jeong),배석진(Seokjin Bae),김성준(Seongjun Kim) 한국환경보건학회 2022 한국환경보건학회지 Vol.48 No.2
Background: As high concentrations of uranium and radon have been detected in some areas in Korea, it is considered necessary to investigate natural radioactive materials in the Gwangju area. Objectives: This study aimed to identify the hydrochemical characteristics of groundwater in Gwangju and investigate the distribution characteristics of uranium and radon, which are naturally radioactive substances. Methods: To determine the uranium and radon concentrations in groundwater according to the geology of the Gwangju area, we measured 62 groundwater wells. A geological distribution map of uranium and radon content was prepared for this study. Results: The groundwater type, defined using a Piper diagram, was mainly Ca-HCO3. The concentration of uranium in the groundwater ranged from 0 to 29.3 µg/L, with a mean of 3.3 µg/L and a median of 0.9 µg/L. The median concentration of uranium in groundwater was highest in alluvium, granitic gneiss, and biotite granite (classified by geological unit), in that order. The concentration of radon in the groundwater ranged from 4.8 to 313.2 Bq/L, with a mean of 75.6 Bq/L and a median of 59.6 Bq/L. The median concentration of radon in groundwater was highest in biotite granite, alluvium, and granitic gneiss, in that order. As a result of the correlation analysis of groundwater in the study area, there was no significant correlation between uranium and radon. Conclusions: In this study area, uranium was shown to be far below the concentrations allowed by drinking water quality standards, but radon concentrations exceeded drinking water quality monitoring standards in 11% of the samples. It was judged that appropriate measures, such as the installation of radon reduction facilities, will be required after a thorough review of high-concentration radon detection sites of in the research area.