ISSN 0253-2778

CN 34-1054/N

2013 Vol. 43, No. 5

Display Method:
Research on the resolution enhancement of brightness temperature at TMI 107 GHz
GAO Yue, LIU Qi, FU Yunfei, HENG Zhiwei, XIAN Tao
2013, 43(5): 345-354. doi: 10.3969/j.issn.0253-2778.2013.05.001
Abstract:
The relatively coarser spatial resolution of low frequency channels of passive microwave remote sensing tends to cause the beam-filling effect,which essentially affects the retrieval of atmospheric parameters and efficiency of usage. With the TMI 107 GHz measurements as the target, discussions were ...
Geochemical characteristics of REE in limestone of the Taiyuan Formation, Paner coalmine and their constraint on depositional environment
WU Bin, WU Dun, WAN Zongqi, LIU Guijian, SUN Ruoyu
2013, 43(5): 355-362. doi: 10.3969/j.issn.0253-2778.2013.05.002
Abstract:
Based on a detailed petrologic study, the characteristics of REEs in limestone samples from the Late Carboniferous Epoch Taiyuan Formation in the Huainan Paner coalmine were analyzed. The origin of REEs and the depositional environment of limestone were investigated. Lower concentrations of Zr, Th, ...
Image fusion quality assessment of multisource remote sensing for TH-1 PAN
ZHU Qian, LI Xia, LIU Lingling
2013, 43(5): 363-368. doi: 10.3969/j.issn.0253-2778.2013.05.003
Abstract:
In order to find suitable multispectral images and fusion methods for the pan-sharpening of TH-1 panchromatic images, IHS, Wavelet, PCA, P+XS, Brovey five transformation methods were used to separately fuse TH-1 PAN with TH-1 MS, TM MS and ETM MS, and the fusion results were assessed from visual and...
Experimental and theoretical investigation of the superhalogen character of BO2 cluster
FENG Yuan, XU Hongguang, HOU Gaolei, KONG Xiangyu
2013, 43(5): 369-378. doi: 10.3969/j.issn.0253-2778.2013.05.004
Abstract:
Superhalogens exhibit special stable characters and electronic properties, and are suitable to be used as building blocks in designing cluster assembling materials. BO2 is only one electron short to electronic shell closing and has a high electron affinity, 446 eV, larger than that of halogen atoms,...
Theoretical study on the properties of TEMPO and its derivates losing an electron
MAO Shucai, SHU Xugang, SHEN Yong
2013, 43(5): 379-386. doi: 10.3969/j.issn.0253-2778.2013.05.005
Abstract:
A theoretical study on the properties of 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) and its derivates and each molecule losing an electron in vacuum and in acetonitrile were carried out using the density functional theory (DFT) at the (U)B3LYP/6-31g(d,p) level. The computational results show that ...
A heat transfer empirical correlation for the stratospheric airship based on its length-to-diameter ratio
LIU Quan, XU Shumin, ZHONG Wei, YANG Jianzhi, LIU Minghou
2013, 43(5): 387-392. doi: 10.3969/j.issn.0253-2778.2013.05.006
Abstract:
Thermal control is one of the key technologies involved in stratospheric airship applications, and convective heat transfer is an important factor in the thermal control of a stratospheric airship. In order to accurately predict the heat transfer of an airship,using the numerical method, an empirica...
Experimental study on flat loop heat pipes used in HCPV systems
ZHU Huiyuan, ZHANG Xianfeng, LIU Quan, LIU Minghou
2013, 43(5): 393-401. doi: 10.3969/j.issn.0253-2778.2013.05.007
Abstract:
A flat loop heat pipe (FLHP) with a mixed sintered wick was designed for cooling off high concentration photovoltaic (HCPV) solar cells. The effect of heat load, inclination angle and condenser parameters on the start-up and operating performance of the heat pipe was experimentally studied. It was f...
A model for predicting smoke filling time in a compartment with ceiling vents based on the assumption of an irregular ceiling
LI Qiang, LU Shouxiang, ZHANG Jiaqing, CHEN Bing, LI Changhai
2013, 43(5): 402-409. doi: 10.3969/j.issn.0253-2778.2013.05.008
Abstract:
Based on the assumption of an irregular ceiling, a model was established for predicting smoke filling time in a compartment with ceiling vents. 24 experiments were conducted in a compartment with an interior dimension of 3.0 m(L)×3.0 m(W)×1.95 m(H). Four pool fires with diameters of 0.10, 0.14, 0.20...
Relationship between credit risk and market value of listed companies based on copula method
HU Xinhan, YE Wuyi, MIAO Baiqi
2013, 43(5): 410-419. doi: 10.3969/j.issn.0253-2778.2013.05.009
Abstract:
Based on a variable selection method, the default probability of listed companies was calculated with a logistic model. Then kernel estimation and copula method were applied to fit the marginal and joint distribution between credit risk and changes in market value of listed companies. With condition...
Deriving intuitionistic fuzzy number priority weights from intuitionistic judgment matrix
TU Zhenkun, LIU Xinbao
2013, 43(5): 420-428. doi: 10.3969/j.issn.0253-2778.2013.05.010
Abstract:
The problem of the weights of intuitionistic judgment matrix (IGM) was discussed, and the consistency of IGM, which is related to the reliability of the weights, was explored. From the perspectives of the score function and accuracy function of intuitionistic fuzzy value, a new definition of additiv...