http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Automatic Lane Change System with Double Loop PID Algorithm
Junki Hong,Jaehwan Choi,Sooho Woo,Jaehong Lee,Soon-Geul Lee,Jaehyeong Kim,Kyungsu Cha 제어로봇시스템학회 2022 제어로봇시스템학회 국제학술대회 논문집 Vol.2022 No.11
For automatic lane change of the advanced driver assistance system, it is necessary to compensate the sensor limitations and also to provide a stable and accurate steering controller. In this paper, a look-ahead model that uses the future position data of the vehicle to supplement the limitations of the sensor mounted in the vehicle is used. In addition, to make smooth the lateral control of the vehicle body, a double loop PID is used to control the heading angle rate. Simulink-based program is used for the automatic lane change by manually operating the turn indicator in the vehicle. The program was simulated with IPGs CarMaker and ran in a real-world environment with MicroAutoBox II on Rav4 of Toyota. Experimental results showed that both the real vehicle test and the simulation completed the lane change stably with an error within 50 cm, despite the influence of the disturbance in the real environment.
컬러감자 홍영, 자영으로부터 항산화 화합물의 정량 및 간세포 보호 효과 탐색
김상민 ( Sang Min Kim ),강경수 ( Kyungsu Kang ),하인수 ( In Su Ha ),노주원 ( Chu Won Nho ),남정환 ( Jung Hwan Nam ),조지홍 ( Ji Hong Cho ),권오근 ( Oh Keun Kwon ),정진철 ( Jin Cheol Jeong ),이재권 ( Jae Kwon Lee ),판철호 ( Cheol H 충북대학교 과학교육연구소 2014 과학교육연구논총 Vol.29 No.1
The colored Potatoes, ‘Hongyoung’ and ‘Jayoung’ cultivars bred in Rural Development Administration (Korea) contain antioxidant compounds such as chlorogenic acids and anthocyanin compounds in the tuber. In this study, main antioxidant compounds in both cultivars were identified by LC-MS analysis and quantified by HPLC analysis. The result showed that three compounds (petunidin-3-O-coumaroyl-rutinoside-5-O-glucoside, pelargonidin-3-Ocoumaroyl- rutinoside-5-O-glucoside and peonidin-3-O-coumaroyl-rutinoside -5-O-glucoside) were identified as main anthocyanins in ‘Jayoung’ cultivar while only pelargonidin-3-O-coumaroyl-rutinoside-5-O-glucoside was presented as a major anthocyanin in ‘Hongyoung’ cultivar. Among chlorogenic acids, 5-O-caffeoylquinic acid was the most abundant in both cultivars. In order to evaluate hepatoprotective activity of these potatoes, the methanol extracts and their serial solvent fractions were prepared by solvent partition and XAD-7 column chromatography method and treated on hepatoma HepG2 cells of which cytotoxicity was induced by tert-butyl hydroperoxide. Among the tested samples, anthocyanin-rich fractions from both cultivars contained the strongest hepatoprotective effect on HepG2 cells. This result indicates that hepatoprotective effect of these fractions can be occurred from anthocyanin.
전남 지역 농기계 탑승자 인적피해 교통사고의 유형별 특성 및 저감 대책
신용석(Yongsuk Shin),윤간우(Kanwoo Youn),김경수(Kyungsu Kim),최동필(Dongphil Choi),홍순중(Soonjung Hong),이민지(Minji Lee) 한국자료분석학회 2023 Journal of the Korean Data Analysis Society Vol.25 No.4
본 연구에서는 농기계 교통사고 예방대책 수립의 기초자료를 제공하고자, 2014~2018년까지의 전남 경찰청의 경찰접수 교통사고 자료 중 “농기계 탑승자의 인적피해가 발생한 교통사고” 원자 료를 기반으로, 사고 유형별‧농기계 종류별 상세한 사고발생 현황 및 사망사고 발생 현황을 분 석하였다. 농기계 탑승자의 인적 피해가 발생한 총 760건의 사고 중 제2당사자(차대차), 농기계 단독사고, 제1당사자(차대차) 사고가 각각 52.9%, 25.9%, 21.2%를 차지하였다. 사고 농기계 운전 자의 95.8%가 남성이었으며, 45.9%가 70대였고, 주요 사고 농기계 종류는 경운기(61.6%), 트랙터 (11.3%), 종류 미상(22.0%)이었다. 다변수 로지스틱 회귀분석 결과, 농기계 운전자의 사망 위험은 고령자일수록 높았고, 농기계 단독사고가 제1당사자(차대차) 사고에 비해 10.0배 높았으며, 경운 기 사고가 트랙터 사고의 1.7배, 내리막길 사고가 평지 및 기타도로 사고에 비해 1.7배 높았다. 본 연구결과, 사고 당사자 종류 및 단독사고 여부에 따라 각기 다른 사고 발생 특성이 나타났으 며, 각 유형별 사고 특성 및 대표적인 사고 형태(경운기의 단독 전도/전복/도로이탈 사고, 경운기 와 트랙터의 타차량으로부터의 야간 추돌사고, 경운기와 타차량과의 측면충돌사고)를 고려한 구 체적인 예방대책 수립이 필요함을 제시하였다 This study aimed to provide foundational data for establishing measures to prevent agricultural machinery traffic accidents by analyzing Jeonnam Police Agency's data on traffic injuries to agricultural machinery occupants between 2014 and 2018. Out of 760 accidents, 52.9% were vehicle-to-vehicle collision where agricultural machinery operators involved as a secondary party(less responsible to accidents), 25.9% were single agricultural machinery accidents, and 21.2% were vehicle-to-vehicle collision where agricultural machinery operators involved as a primary party(more responsible to accidents). 95.8% of the accident-involved agricultural machinery operators were male, 45.9% were in their 70s, and the main types of agricultural machinery involved in the accidents were power tillers (61.6%), tractors (11.3%), and unidentified types (22.0%). Results of the multivariable logistic regression showed higher death risks for elderly drivers, single machinery accidents (10.0 times higher than primary party accidents), power tiller accidents (1.7 times higher than tractor accidents), and accidents on downhill roads (1.7 times higher than flat or other roads). Different accident characteristics appeared based on involved parties, suggesting the need for specific preventive measures considering each type's accident characteristics and representative accident forms.
Nonvolatile Memory Characteristics of Double-Stacked Si Nanocluster Floating Gate Transistor
Eunkyeom Kim,Kyongmin Kim,Daeho Son,Jeongho Kim,Kyungsu Lee,Sunghwan Won,Junghyun Sok,Wan-Shick Hong,Kyoungwan Park 대한전자공학회 2008 Journal of semiconductor technology and science Vol.8 No.1
We have studied nonvolatile memory properties of MOSFETs with double-stacked Si nanoclusters in the oxide-gate stacks. We formed Si nanoclusters of a uniform size distribution on a 5 nm-thick tunneling oxide layer, followed by a 10 nm-thick intermediate oxide and a second layer of Si nanoclusters by using LPCVD system. We then investigated the memory characteristics of the MOSFET and observed that the charge retention time of a double-stacked Si nanocluster MOSFET was longer than that of a single-layer device. We also found that the double-stacked Si nanocluster MOSFET is suitable for use as a dual-bit memory.
적외선열화상을 이용한 원자력발전소 감육 배관의 결함 검출
김경석(Kyeongsuk Kim),장호섭(Hosub Chang),홍동표(Dongpyo Hong),박찬주(Chanjoo Park),나성원(Sungwon Na),김경수(Kyungsu Kim),정현철(Hyunchul Jung) 한국비파괴검사학회 2010 한국비파괴검사학회지 Vol.30 No.2
절대온도(OK) 이상의 온도를 가지고 물체는 표면온도에 대응하는 적외선 파장대역에서 적외선 에너지를 방출하게 된다. 적외선열화상은 적외선 파장대역에 반응하는 검출기를 이용하여 검출된 적외선 량을 온도로 변환하고 사용자에게 적외선영상을 실시간으로 제공하는 비파괴검사 방법이다 원자력발전소의 배관은 부식, 피로 등으로 인해 두께가 얇아져 큰 사고로 이어질 수 있는 결함이 발생하므로 이를 위한 효율적인 비파괴검사 시스템이 요구되고 있다. 따라서 본 연구에서는 적외선열화상 카메라로 측정한 온도와 배관의 결함 깊이 및 크기와의 상관관계를 알아보고 이를 원자력발전소 배관에 적용하여 결함을 검출하는 연구를 수행하였다. The infrared energy is emitted in the infrared wavelength range that corresponds to the surface temperature of a object which has temperature that is over the absolute the temperature(OK). The infrared thermography (IRT) is a non-destructive testing method that provides thermal video for the user in real-time by converting the infrared quantity that is detected by the infrared detector into temperature. The pipes of nuclear power plant(NPP) could be thinned by the corrosion and fatigue and the defect could lead to a big accident. For this reason, the effective non-destructive testing method is necessary. In this study, the relationship between the measured temperature and the defect depth or size of NPP pipes were recognized and that was applied to detect the wall thinning defects of NPP pipes.