共搜索到20359条信息,每页显示10条信息,共2036页。用时:0小时0分0秒504毫秒
with BPSK subcarriers [J]. IEEE Commun Lett, 2001, 5(5): 185-187. [14] JIANG T, GUIZANI M, CHEN H, XIANG W, WU Y. Derivation of PAPR distribution of the peak-to-average power ratio in OFDM signals [J...-Verlag Berlin Heidelberg 2012 Abstract: A new approach for peak-to-average power ratio (PAPR) reduction in orthogonal frequency division multiplexing (OFDM) systems was proposed. This approach is based......
dispersion within the blocks around the water, the wind tunnel results consider the vapor pressure ratio VP (R) as an evaluation index of the diffusion effect, which is defined Fig. 4 Distribution... of building floor area ratio on water vapor mass fraction and temperature 4.3 Effect of building type on thermal environment Figure 14 shows the distribution of tv of the four cases. Y represents distance......
......
......
Sintering temperature reflected cation distribution of Zn2+ substituted CoFe2O4Sanjay R. Kamble1, Sagar E. Shirsath2, S. M. Patange3, K. M. Jadhav4(1. Department of Physics, SMDM College, Kalamb... of properties on the state of structural disorder and, in particular, on the cation distribution. The structural characterization of a Co-Zn ferrite nanoparticle sample was reported which prepared by wet chemical......
J. Cent. South Univ. Technol. (2008) 15: 786-790 DOI: 10.1007/s11771-008-0145-1 Effects of temperature and initial molar ratio of Na2O to Al2O3 on agglomeration of fine Al(OH)3 seed in synthetic... particle size analyzer and scanning electron microscopy, the influences of temperature and initial molar ratio of Na2O to Al2O3 (αK) on agglomeration of fine seed in Bayer process were investigated......
for same magnitude, the V/H PGA ratio does not present remarkable regularity along with the epicentral distances. Fig. 4 Distribution of V/H PGA ratios for offshore motions along with epicentral...J. Cent. South Univ. (2017) 24: 203-216 DOI: 10.1007/s11771-017-3421-0 Vertical-to-horizontal response spectral ratio for offshore ground motions: Analysis and simplified design equation CHEN Bao......
(ηP) both increase with an increase in the basicity of the original slag materials and the Fe2O3 contents. The vanadium distribution ratio is about an order of magnitude greater than the phosphorus distribution ratio but the latter is more sensitive to slag basicity than the former. The phosphorus distribution ratio is beyond 6 when the basicity of the original slag materials is beyond 1, which......
on coating extrusion forming of Pb-GF composite wire was performed by using DEFORM. The effective stress distribution was well predicted. It is revealed that the higher the extrusion ratio, the higher... Effect of extrusion ratio on coating extrusion of Pb-GF composite wire by numerical simulation and experimental investigation WANG Xin(王 欣), SUN Hong-fei(孙宏飞), FANG Wen-bin(房文斌) School......
......