史思明父子杀"胡"与政权失败

史思明杀害安庆绪时,连带屠杀与安庆绪同种族的胡人,史朝义弑父后,同样有杀害胡人的经历,这归根于史思明与安禄山不同种族之故.安禄山是落居东北的西域胡人,故能曲意迁就和拉拢当地各民族,反唐声势最为浩大.史氏父子则不同,更强调其突厥及土著的身份,导致种族联合的破裂,进而促使史朝义彻底覆灭.此巩固的种族团结的破坏,除一定程度上由政治形势变化所迫,史氏父子失策当属主要原因.     

电磁搅拌频率对半固态Al-Cu合金显微组织的影响

为了改变Al-Cu合金初生α-Al的枝晶彤貌,本论文研究了正反转电磁搅拌换向间隔时间对半固态Al-Cu合金显微组织的影响.试验结果表明:正反转搅拌下换向间隔时间对初生α-Al组织形貌的影响较大,初生α-Al的显微组织形貌是由搅拌的激烈程度和搅拌的有效时间综合作用的结果.     

Simultaneous changes in seed size,oil content and protein content driven by selection of SWEET homologues during soybean domestication

Soybean accounts for more than half of the global production of oilseed and more than a quarter of the protein used globally for human food and animal feed. Soybean domestication involved parallel increases in seed size and oil content, and a concomitant decrease in protein content. However, science has not yet discovered whether these effects were due to selective pressure on a single gene or multiple genes. Here, re-sequencing data from >800 genotypes revealed a strong selection during soybean domestication on GmSWEET10a. The selection of GmSWEET10a conferred simultaneous increases in soybean-seed size and oil content as well as a reduction in the protein content. The result was validated using both near-isogenic lines carrying substitution of haplotype chromosomal segments and transgenic soybeans. Moreover, GmSWEET10b was found to be functionally redundant with its homologue GmSWEET10a and to be undergoing selection in current breeding, leading the the elite allele GmSWEET10b, a potential target for present-day soybean breeding. Both GmSWEET10a and GmSWEET10b were shown to transport sucrose and hexose, contributing to sugar allocation from seed coat to embryo, which consequently determines oil and protein contents and seed size in soybean. We conclude that past selection of optimal GmSWEET10a alleles drove the initial domestication of multiple soybean-seed traits and that targeted selection of the elite allele GmSWEET10b may further improve the yield and seed quality of modern soybean cultivars.     

论廉颇的自我批评精神

自我批评是一种自觉反省过错的积极态度,《史记》中廉颇的自我批评精神体现在他愧对蔺相如而负荆请罪的行为上,其精神主要表现为四方面:一是自我批评要出于公心;二是自我批评需要宽大的心胸;三是自我批评要公开进行;四是自我批评需要有良好的社会环境。廉颇的自我批评精神不仅令将相和传为千古佳话,也对现代有着教育意义,成为中华民族的一种精神财富。     

城市化水平的聚类和因子分析

运用聚类分析模型和因子分析方法，对长三角地区16个城市在10个经济指标变量上的样本数据进行了分析，从量和质的角度综合评价了各城市的城市化的水平。     

淡泊与神性——谈当下中国书法界的浮躁心理

当下中国书法界,名利欲望的极度膨胀,致使许多人产生浮躁心理,书法媚俗。宜淡泊、克己、去杂欲,对神性敬畏与谦卑,神人以和,克服浮躁心理,提倡淡泊拒绝媚俗。     

中国报业经济外向度评析

文章运用报业外贸依存度、报业使用外资情况、报业对外投资实力等报业经济外向度的测算指标,分析了我国报业经济外向度存在的问题.研究表明,我国报业经济外向度整体水平偏低,进出口结构差异明显.近年来,我国报业经济外向度呈现缓慢上升趋势,但这不能改变中国报业经济封闭运行的基本格局.通过调整报业经济结构、适度提高报业经济外向度、实行数字化传播等方式将有助于提升报业经济的国际影响力.     

基于知识基础上的迁移研究新进展

通过对基于知识基础上的迁移理 论和迁移研究的最新进展的阐述，着重介绍了知识对迁移的作用和影响。最后对迁移研究的方法进行评述，对未来迁移研究的趋势进行了展望。     

Realism Matters: The Role of Perceived Realism in The Biggest Loser

This study investigated implications of viewing The Biggest Loser, NBC’s popular reality television show. Using online survey data collected from 613 participants, results suggest that exposure to the program is positively associated with perceived realism of the program, which in turn is positively associated with developing internal weight locus of control. Meanwhile, internal weight locus of control is positively associated with audience members’ exercise behavior, meaning the higher level of internal weight locus of control the audience members develop, the more likely they are to engage in physical exercise. This study offers evidence that health-related reality television might be a useful tool to influence audience members’ cognitions on health issues, which could potentially lead to healthy lifestyles.