搜索筛选:
搜索耗时4.6881秒,为你在为你在102,285,761篇论文里面共找到 10 篇相符的论文内容
发布年度:
[学位论文] 作者：Safi Ullah（萨飞）,
来源：东南大学 年份：2020
該研究審查了巴基斯坦國際建設專案所涉及的確切政治風險以及對這些風險的有效管理。本研究的目的是研究影響影響項目系統的國際建築專案的政治風險的變數。調查表是作為一項調查進行的,其中60份來自工業界的答覆。然後對這些因素進行研究和分析,以確定變數之間......
[期刊论文] 作者：Safi Ullah,Hai-Long Li,Abdur R,
来源：电子科技学刊:英文版 年份：2020
In this paper,an analytical model is used to analyze the modulated polar mesospheric winter echoes(PMWE).The winter parameters were introduced to simulate the e...
[期刊论文] 作者：Safi Ullah,HaiLong Li,Abdur Ra,
来源：地球与行星物理:英文版 年份：2021
For the first time,the effect of ions on complex conductivity and permittivity of dusty plasma at Polar Mesosphere Summer Echoes(PMSE)altitude is analyzed.Becau...
[期刊论文] 作者：Abdur RAUF,LI Hailong,Safi ULLAH,WANG Maoyan,MENG Lin,
来源：黑龙江科技信息 年份：2019
本文通过对荣华二采区10...
[期刊论文] 作者：Abdur RAUF,LI Hailong,Safi ULLAH,WANG Maoyan,MENG Lin,,
来源：Advances in Polar Science 年份：2019
The observations of Polar Mesosphere Summer Echoes(PMSE) were carried out using the sporadic data of EISCAT UHF radar during the summer season from 2004 to 2015. There were 25 h of PMSE echoes with EI...
[期刊论文] 作者：Safi Ullah,Hai-Long Li,Abdur Rauf,Lu-Yao Fu,Mao-Yan Wang,Lin Meng,
来源：电子科技学刊 年份：2020
In this paper, an analytical model is used to analyze the modulated polar mesospheric winter echoes (PMWE). The winter parameters were introduced to simulate th...
PMSE dependence on frequency observed simultaneously with VHF and UHF radars in the presence of prec
[期刊论文] 作者：Safi ULLAH,Hailong LI,Abdur RAUF,Lin MENG,Bin WANG,Maoyan WANG,
来源：黑龙江科技信息 年份：2018
本文通过对荣华二采区10...
[期刊论文] 作者：HaiLong Li,ShuCan Ge,Lin Meng,MaoYan Wang,Abdur Rauf,Safi Ullah,
来源：地球与行星物理（英文） 年份：2021
Polar mesosphere summer echoes (PMSE) are observed simultaneously with Digisonde and EISCAT VHF radar. The phenomenon of irregular Es layers is called PMSE-like...
[期刊论文] 作者：Safi Ullah,HaiLong Li,Abdur Rauf,Lin Meng,Bin Wang,ShuCan Ge,MaoYan Wang,
来源：地球与行星物理（英文） 年份：2021
For the first time, the effect of ions on complex conductivity and permittivity of dusty plasma at Polar Mesosphere Summer Echoes (PMSE) altitude is analyzed. B...
Characteristic analysis of layered PMSEs measured with different elevation angles at VHF based on an
[期刊论文] 作者：ShuCan Ge,HaiLong Li,Bin Xu,Tong Xu,Lin Meng,MaoYan Wang,Abdel Hannachi,MengYan Zhu,Lina Broman,Safi Ullah,
来源：地球与行星物理（英文） 年份：2021
Polar Mesosphere Summer Echoes (PMSEs) are very strong radar echoes observed at altitudes near the polar summermesopause. One of the essential properties of the...
相关搜索：
