具有齐次核的Hilbert型积分不等式的构造特征及应用

利用实分析技巧,研究具有齐次核的Hilbert型积分不等式的构造特征及取最佳常数因子的充要条件,得到了最佳常数因子的解析表达式.     

论西林春词作品的类型及特色

西林春词数量庞大内容丰富，以题画、咏物、闺中、交友等题材类型为主，老成高格、明悟冲淡、细腻清拙、婉约本色为西林春词总体特色，这些特色的形成与词人的性格特点、所处的社会环境及人生遭遇等因素密切相关。     

Electrorheological effect of Ti-bearing blast furnace slag with different TiC contents at 1500℃

The electrorheological properties of CaO–SiO2–Al2O3–MgO–TiO2–TiC slags were investigated to enhance understanding of the effect of TiC addition on the viscosity, yield stress, and fluid pattern of Ti-bearing slags in a direct-current electric field. The viscosities and shear stresses of 4wt% and 8wt% TiC slags were found to increase substantially with increasing electric field intensity, whereas virtually no rheological changes were observed in the 0wt% TiC slag. The Herschel–Bulkley model was applied to demonstrate that the fluid pattern of the 4wt% TiC slag was converted from that of a Newtonian fluid to that of a Bingham fluid in response to the applied electric field; and the static yield stress increased linearly with the square of the electric field intensity.     

Variation in ovariole number within the Aphidoidea

Several different morphs from over 50 species of aphids were dissected and the number of ovarioles recorded for each. By using these results and published data, details of ovariole number in more than 125 species of aphid from seven families were analysed.

Variation in ovariole number between generations was found in six of the seven families studied. Variation within a generation appeared to be restricted to certain subfamilies.

Certain trends in variability of ovariole number appear to be linked with the morph of the aphid, migratory morphs (particularly within the Aphididae) having greater variability than non-migratory morphs. Heteroecious aphids tend to show greater variability than autoecious aphids which, in turn, show greater variability than anholocyclic aphids.     

Variations in some morphological characteristics of Polydora ciliata (Johnston)

Summary

On investigation of a dense population of mud tube building polychaetes tentatively identified as Polydora ciliata it was found that many individuals also showed morphological characteristics more usually associated with other members of the same genus. This prompted the examination of the morphology of P. ciliata from a number of different areas with the aim of assessing the stability of some of the characters used in the taxonomy of its genus. These proved to be highly variable, did not group together consistently and overlapped with some of those of P. limicola (Annenkova) and P. ligni Webster. No clear distinction between P. ciliata and P. limicola could be made on the grounds of the characteristics examined but the overlap between P. ciliata and P. ligni was small.     

网络口碑对市场销售分布的影响:基于不同产品评价标准

网络口碑中的产品信息帮助客户明确他们的需求,从而引起在线市场销售分布的变化.本研究探讨网络口碑对不同市场销售分布的影响,根据产品评价标准的相似性水平对市场进行分类.提出了网络口碑对于不同市场销售分布具体影响的三个假设,并通过从京东商城(www.jd.com)收集的数据进行相应的验证.绘制网络口碑的累积分布函数来代表总的知名度,并使用Wilcoxon符号秩检验从统计学上进行比较来显示高级别产品拥有的不同网络口碑的比例.所有的测试结果都显示足够的显著性,从而支持了三个假设.     

T BM 在吉林中部城市引松供水施工中的应用

以敞开式TBM 为主介绍了常见的TBM类型及发展现状，结合吉林中部城市引松供水项目论述了不良地质因素，如软弱围岩变形、隧洞突涌水、岩爆、塌方对敞开式 TBM 掘进的影响，重点论述了针对不同因素采取的处理措施和操作方法。     

转炉泡沫渣气泡分布特点及形成过程

在转炉留渣-双渣工艺脱磷阶段结束倒渣时，分别使用样勺获取倒渣开始时上部泡沫渣，倒渣结束时下部泡沫渣以及倒渣结束后炉内剩余底部泡沫渣，使用宏观及微观的方法分别分析泡沫渣各部位气泡分布特点。结果表明：气泡平均当量直径，上部>下部>底部；孔隙率，上部>下部>底部。转炉泡沫渣的形成过程为：随着大量CO/CO2气泡进入渣中，气泡之间不断碰撞、合并，上部气泡被下部气泡抬挤且由于气泡本身的浮力作用，气泡不断上升，气泡在上升时由于重力作用，气泡之间渣相在重力作用下析液，气泡的拓扑结构不断发生变化，同时气泡之间不断碰撞、合并，最后形成上部气泡直径大且孔隙率高，下部气泡直径小且孔隙率低的泡沫渣。     

网络舆情及其应对与上市公司的信息效率

网络舆情的兴起给资本市场带来了深远影响,对监管层和上市公司的舆情管理工作也提出了新的挑战.借助于监管部门对深市上市公司网络舆情应对状况的调查,实证检验了网络舆情及其应对与上市公司的信息效率的关系.研究发现,网络舆情危机会造成当年度股价崩盘,且来自自媒体的转载会增大股价崩盘的幅度,网络舆情重视和应对程度良好的公司在面对舆情危机时的股价崩盘幅度更低.上市公司对网络舆情的重视及投入能够向资本市场传递公司特质信息,提高资本市场的信息效率,进而降低未来股价崩盘风险和股价同步性.结论表明,上市公司加强网络舆情应对并非是满足监管要求和投资者诉求的面子工程,而是一项切实有效的求是工作,结论对完善资本市场信息传播管理制度,提高资本市场信息效率具有一定的参考价值.     

一个较精确加强型的半离散Hilbert型不等式

应用权函数的方法及Hermite Hadamard不等式, 建立一个较精确且加强型的半离散非齐次核Hilbert型不等式, 并给出该不等式具有最佳常数因子联系参数的一组等价性质及一些特殊参数不等式.