http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Zeng Xiaodong (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Early Childhood Kindergarten Programs in China: Issues of Access and Funding
Zeng Yaqin,Berenice Nyland,Zeng Xiaodong 환태평양유아교육연구학회 2011 Asia-Pacific journal of research in early childhoo Vol.5 No.1
China has a complex system of multiple types of preschool provision, different funding models, a rural-urban divide and a diverse population in relation to place of origin, language dialects and socio economic status. In this paper we explore the complex situation of preschool provision and implications for policy makers in China. As the provision of preschool education is increasingly privatized there is a concern that children from low income families may not have access to quality early care and education services. Affordability and access to education in the early years has become a major concern of governments concerned about equity and the development of human capital. Case studies have been carried out in Beijing, as a developed urban centre and in Yinchuan, as a rural centre in the west of China. The data presented examines the relationship between types of service, fees charged and the income of families who access these services.
-
A Novel 3-D Imaging Configuration Exploiting Synthetic Aperture Ladar
Liang Guo,Yinli Huang,Xiaozhen Li,Xiaodong Zeng,Yu Tang,Mengdao Xing 한국광학회 2017 Current Optics and Photonics Vol.1 No.6
Traditional three-dimensional (3-D) laser imaging systems are based on real aperture imaging technology,whose resolution decreases as the range increases. In this paper, we develop a novel 3-D imaging techniquebased on the synthetic aperture technology in which the imaging resolution is significantly improved anddoes not degrade with the increase of the range. We consider an imaging laser radar (ladar) system usingthe floodlight transmitting mode and multi-beam receiving mode. High 3-D imaging resolutions areachieved by matched filtering the linear frequency modulated (LFM) signals respectively in range, syntheticaperture along-track, and the real aperture across-track. In this paper, a novel 3-D imaging signal modelis given first. Because of the motion during the transmission of a sweep, the Doppler shift induced bythe continuous motion is taken into account. And then, a proper algorithm for the 3-D imaging geometryis given. Finally, simulation results validate the effectiveness of the proposed technique.
ScienceON연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
