平坦瑞利衰落信道下MIMO系统性能

分析了瑞利衰落对普通无线系统的影响,在此基础上重点从空间复用提高容量和空间分集对抗衰落两方面研究了瑞利衰落信道下MIMO系统的性能。分析和仿真结果表明,采用V-BLAST算法实现空间复用增益时,随着收发天线数目的增加,复用系统的符号错误概率增加;不同的分集结合方式对分集系统性能的影响不一样,随着天线数目的增加,分集系统的符号错误概率都递减。     

张爱玲的间接诉情文本解读

《红楼梦魇》是张爱玲情节化操作之外的特例,这部关于《红楼梦》的考据和评点专论,是她穷毕十年精力的后期作品。张爱玲对《红楼梦》及研究的“疯狂”,是其这部学术专论的表征;而她与《红楼梦》及其作者之间的文化传承关系,是这部专论的非学术隐义。张爱玲与曹雪芹文人品格的共性,源于他们共同的末世之感;张爱玲继承了《红楼梦》对悲剧本原的演绎方式,将《红楼梦魇》作为自己的间接诉情文本。     

The possible contribution of a mantle-derived fluid to the Ningwu porphyry iron deposits-Evidence from carbon and strontium isotopes of apatites

Apatite is a characteristic mineral for the iron deposits in the Ningwu region. Apatite shows a range of δ¹³CPDB values from -9.6 ‰ to -0.6‰, and most of them with the δ¹³CPDB values distributed in a range of mantle carbon (i.e., ﹣2‰ to -9‰) except for samples T-06-1and J-06-3. Apatites in the Ningwu porphyry iron deposits yield a narrow variation range of ⁸⁷Sr/⁸⁶Sr values from 0.706326 to 0.707577, similar to those of the volcanic and subvolcanic rocks and lower than those of a typical mantle-derived magmatic apatite (i.e., about 0.7040), indicating that formation of the apatites were involved with crust material contamination. Δ¹³CPDB and ⁸⁷Sr/⁸⁶Sr values of the apatite indicate a possible contribution of mantle-derived fluid and material to formation of the Ningwu porphyry iron deposits, supported by regional geology, regional gravities and geochemistry of the volcanic and subvolcanic rocks in the Ningwu region.     

The possible contribution of a mantle-derived fluid to the Ningwu porphyry iron deposits-Evidence from carbon and strontium isotopes of apatites

Apatite is a characteristic mineral for the iron deposits in the Ningwu region. Apatite shows a range of δ^13CPDB values from -9.6‰ to -0.6‰, and most of them with the δ^13CPDB values distributed in a range of mantle carbon （i.e., -2‰to -9‰）, except for samples T-06-1 and J-06-3. Apatites in the Ningwu porphyry iron deposits yield a narrow variation range of ^87Sr/^86Sr values from 0.706326 to 0.707577, similar to those of the volcanic and subvolcanic rocks and higher than that of a typical mantle-derived magmatic apatite （i.e., about 0.7040）, indicating that formation of the apatites was involved with crust material contamination.δ^13CPDBand ^87Sr/^86Sr values of the apatite indicate a possible contribution of mantle-derived fluid and material to formation of the Ningwu porphyry iron deposits, supported by regional geology, regional gravities and geochemistry of the volcanic and subvolcanic rocks in the Ningwu region.     

网络嵌入与技术创新组织模式选择

已有对技术创新组织模式的研究主要基于经济学的视角,认为,组织的技术创新战略决策会受到与所处网络其他组织间关系的影响。从组织网络嵌入的视角,提出了组织不同的网络嵌入特征与四种主要技术创新组织模式间的内在关系。     

聚N-异丙基丙烯酰胺水凝胶的微波合成及其药物控释性研究

用微波引发合成了聚N-异丙基丙烯酰胺,并制成整体型释放器,对非水溶性药物阿昔洛韦在不同温度响应时的药物缓释行为进行了研究.     

Introducing antisense <Emphasis Type="Italic">waxy</Emphasis> gene into rice seeds reduces grain amylose contents using a safe transgenic technique

Rice (Oryza sativa L.) eating quality is one of themost important traits. Amylose content (AC) in rice en-dosperm is a major index affecting rice eating quality[1,2].It has a negative correlation with gel consistency of rice[3].Based on amylose content, r…     

半鞅积分方程解的存在唯一性

本文在严加安［１］的基础上，讨论半鞅积分方程 Ｘ＝Φ（Ｘ）＋Ｆ（Ｘ）．Ｍ解的存在唯一性．我们所获得的存在唯一性定理，与［１］中定理１３．１３相比较，不要求Ｆ、Φ满足Ｌｉｐｓｃｈｉｔｚ连续条件，而仅要求它们满足局部Ｌｉｐｓｃｈｉｔｚ连续条件，但我们附加了所谓的增长条件．我们还给出解过程估计式．此外，还给出Ｄｏｌｅａｎｓ－Ｄａｄｅ方程解的另一存在唯一性定理。